Title of Invention

METHOD AND EQUIPMENT FOR IMPROVING THE AIR QUALITY IN A LIMITED SPACE

Abstract An equipment for improving air quality in a limited space, comprising: an inner machine positioned inside the limited space, comprising an air-suction purger(137) and an oxygen-supply controller (136), wherein the air-suction purger comprises an air outlet and an air inlet communicating with the limited space, and the oxygen-supply controller comprises an oxygen input port and an oxygen output port; an outer machine(135) comprising an air inlet and an oxygen outlet, the air inlet being connected to the air outlet of the air-suction purger, the oxygen outlet being connected to the oxygen input port of the oxygen-supply controller; and an air supplement equipment comprising an air input and an air output, the air input being outside the limited space and the air output being in the limited space. wherein the outer machine comprises an outer shell(121), an inner cabinet, an xygen-extraction system, a temperature control equipment and a controller, the oxygen- extraction system, the temperature control equipment and the controller being disposed in the outer shell; and wherein the oxygen-extraction system comprises an air input muffler, an air compressor, a gas-water separator, a control valve and a bacterium filter, the gas-water separator being connected to the control valve.
Full Text BACKGROUND OF THE INVENTION
Field of the Invention
[0001] The present invention relates to a method for improving air quality in a
limited space and an equipment used thereof, and, more particularly, to a method
for suctioning air from the limited space, making oxygen outside the limited space
and supplying oxygen for breath into the limited space, and an equipment used
thereof.
Background of the Related Art
[0002] Air conditioner provides a comfort environment for people's work and
living. For this reason, as the development of society, the air conditioner has been
used widely. Unfortunately, however, as the limited space is required to be
enclosed, there is a negative effect occurred that long-term use deteriorates air
quality in the limited space. Particularly, this easily attribute to disease infection
and spread. During SARS in 2003, in order to prevent virus of SARS from
infecting through air, almost all air conditioners, especially central air
conditioners, are turned off according to the requirement of the Chinese Ministry
of Health. Meanwhile, for enhancing ventilation, it is required to open all of the
windows and doors. These enforced measures make advantages of the air
conditioners void.
[0003] In addition, an advanced multi-function disinfecting machine has

functions of disinfect, deodorization and air purification. It is used in places of
easy infection for professionally disinfect and air purification, such as operation
rooms in hospitals. However, the disinfecting machine has neither a function of
cooling or heating that an air conditioner has, nor a function of air exchange. In
addition, the operation of the disinfecting machine is professional and the cost is
expensive. Therefore, it cannot be used widely.
[0004] Furthermore, a small-type pressure swing adsorption (PSA) oxygen
concentrator uses air as source. It suctions air with an air compressor and then
pressurizes the air. After separation in the PSA, oxygen and nitrogen of the air
are separated, thereby obtaining fresh oxygen of high concentration for breath.
Thus, the oxygen concentration equipment has a function of health care and a
certain effect of treatment. Because the conventional small-type PSA oxygen
concentrator is a single unit positioned inside a room, it noises the persons in the
room. Furthermore, the conventional small-type PSA oxygen concentrator
extracts oxygen for breath from the air in the room, while discharging nitrogen
(exhaust gas) left by air separation into the room. With respect to the room with
air conditioner therein, after being maintained a closed state for a long term,
discharging nitrogen into the room by the indoor oxygen concentrator sharpens the
deterioration of the air quality as indoor air quality has been deteriorated.
[0005] Therefore, it is necessary to provide a method with low cost to improve
air quality in a limited space and to provide oxygen for breath into the limited
space, and an equipment used thereof, which is capable of being combined with an
air conditioner and making little noise in the limited space.

SUMMARY OF THE INVENTION
[0006] An object of the present invention is to provide an equipment for
improving air quality in a limited space, which can effectively improve air quality
in the limited space and has a low cost.
[0007] Another object of the present invention is to provide an equipment for
improving air quality in the limited space, which suctions air from the limited
space and making oxygen outside the limited space so as to decrease noise in the
limited space.
[0008] A further object of the present invention is to provide an equipment for
improving air quality in the limited space, which can effectively enhance oxygen
concentration of air in the limited space and ensure it under safety limits.
[0009] Another further object of the present invention is to provide an
equipment for improving air quality in the limited space, which may be used
together with an air conditioning equipment and may be combined with a set of
disinfecting equipment.
[0010] In order to solve the above-mentioned problems, a method for
improving air quality in a limited space according to the present invention
comprises: a process of suctioning air from the limited space, comprising
suctioning air from the limited space and transferring them outside the limited
space as an air source for making oxygen; a process of making oxygen outside the
limited space, comprising extracting oxygen from the air source transferred outside
the limited space, and directly discharging waste gas generated therefrom outside
the limited space; a process of supplying air into the limited space, comprising
transferring extracted oxygen into the limited space and supplying the oxygen via a
oxygen-supply controller; and a process of supplementing air into the limited space,
comprising supplementing air into the limited space during the process of

suctioning air from the limited space.
[0011] Preferably, in a circulating process of the air inside the limited space,
the air in the limited space circulates through a disinfecting equipment and a heat
exchanger so as to achieve temperature control and disinfecting in the limited
space.
[0012] Preferably, the oxygen is supplied to users in the limited space via a
humidification pot and a straw during the process of supplying into the limited
space.
[0013] Preferably, the oxygen is transferred into the limited space after
ionization in an oxygen nozzle and an anion generator during the process of
supplying air into the limited space.
[0014] Preferably, the process of supplementing air into the limited space starts
when a negative pressure occurs in the limited space.
[0015] Preferably, the ratio of the air suctioned in the process of suctioning air
from the limited space to the oxygen extracted in the process of making oxygen
outside the limited space and supplied in the process of supplying air into the
limited space is more than 10, and the air supplemented in the process of
supplementing air into the limited space equals the difference between the
suctioned air in the process of suctioning air from the limited space and supplied
oxygen in the process of supplying oxygen into the limited space.
[0016] An equipment for improving air quality in a limited space comprises: an
inner machine positioned inside the limited space, comprising an air-suction purger
and an oxygen-supply controller, wherein the air-suction purger comprises an air
outlet and an air inlet communicating with the limited space, and the
oxygen-supply controller comprises an oxygen input port and an oxygen output
port; an outer machine comprising an air inlet and an oxygen outlet, the air inlet

being connected to the air outlet of the air-suction purger, the oxygen outlet being
connected to the oxygen input port of the oxygen-supply controller; and an air
supplement equipment comprising an air input and a air output, the air input being
outside the limited space and the air output being in the limited space.
[0017] Preferably, the air-suction purger comprises a housing with air grills, a
filter net and a filter element, wherein the filter net and the filter element are
enclosed in the housing.
[0018] The air supplement equipment is an air balance filter positioned
between the limited space and ambient atmosphere.
[0019] The oxygen-supply controller comprises a control switch, an
electromagnetic valve, a medical humidification pot, a straw and a display alarm
for detection of breathing oxygen concentration.
[0020] The oxygen-supply controller comprises an oxygen nozzle, an anion
generator and an anion output, wherein the anion generator includes a carbon fibre
head.
[0021] The outer machine includes an outer shell, an inner cabinet, and an
oxygen-extraction system, a temperature control equipment and a controller. The
oxygen-extraction system, the temperature control equipment and the controller are
disposed in the outer shell.
[0022] The oxygen-extraction system includes an air input muffler, an air
compressor, a gas-water separator, a control valve and a bacterium filter. The
gas-water separator is connected to the control valve.
[0023] The temperature control equipment includes a heat-dissipation blower
and a heat exchanger with a heating pipe. The heat exchanger is connected to the
air compressor and the gas-water isolator, and the heat-dissipation blower is
mounted between the inner cabinet and the outer shell.

[0024] The inner machine includes an inner machine set for air conditioning
and a disinfecting equipment.
[0025] The inner machine set for air conditioning includes an inner blower for
circulating air and a heat exchanger.
[0026] The disinfecting equipment includes an air filter, a high-voltage field
generator, a micro-duster collector, double layers of Photocatalyst and Silver Nano,
an ultraviolet disinfector and an anion generator.
[0027] The method for improving air quality in the limited space of the present
invention includes the process of suctioning air from the limited space as well as
the process of supplementing air that input air into the limited space from outside
of the limited space. Furthermore, the equipment for improving air quality in the
limited space of the present invention includes the air supplement equipment for
supplementing air into the limited space and the oxygen-supply equipment for
supplying medical oxygen into the limited space. Therefore, the method and
equipment of the present invention can enhance air circulation between inside and
outside of the limited space, thereby improving air quality in the limited space
under a certain extent. The oxygen concentrator of the present invention is small
and extracts oxygen outside the limited space. The oxygen may be transferred
into the limited space and be supplied by the medical humidification pot and the
straw, thereby providing oxygen for breath into the limited space. Furthermore,
the oxygen concentrator may be used together with the air conditioning equipment
and the disinfecting equipment.
[0028] In addition, the method of the present invention is a solution of
suctioning air from the limited space and extracting oxygen outside the limited
space, thereby reducing noise in the limited space.

BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 is a schematic flow chart of circulating air and oxygen in a
method for improving indoor air quality according to the present invention;
[0030] Figure 2 is a schematic representation of an equipment for improving
indoor air quality according to the present invention;
[0031] Figure 3 is a schematic representation of connecting relationship among
components of the equipment for improving indoor air quality according to the
present invention;
[0032] Figure 4 is a schematic representation of connecting relationship among
components of an oxygen-supply controller of an oxygen supplier according to
another embodiment of the present invention;
[0033] Figure 5 is a schematic flow chart of air and oxygen in the method of
suctioning air from a limited space and making oxygen outside the limited space
according to another embodiment of the present invention;
[0034] Figure 6 is a schematic representation of connecting relationship among
components of the oxygen concentration equipment according to another
embodiment of the present invention; and
[0035] Figure 7 is a schematic representation showing a structure of an indoor
machine according to another embodiment of the present invention.
[0036] In the drawings, similar reference numerals denote elements with
similar function. A letter after one reference numeral indicates an example of the
element denoted by the reference numeral.

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
[0037] The specific embodiment of a method for improving air quality in a
limited space and an equipment used thereof will be described in detail with
reference to the accompanying drawings.
[0038] First, the operating principle of improving air quality in a limited space
will be explained in detail by means of improving indoor air quality. Referring to
Figure 1, a method for improving indoor air quality includes suctioning air from
the room during a process of suctioning air from the room. Then suctioned air is
transferred outdoor for a process of making oxygen outside the room after being
purified. Oxygen is extracted from the purified air and the waste gas generated
therefrom is directly discharged outdoor. Finally, extracted oxygen is transferred
into the room through a process of supplying oxygen into the room for breath. As
suctioning air from the room, there is a pressure difference formed between indoor
and outdoor. This pressure difference forces fresh air to flow into the room,
thereby enhancing update of air in the room.
[0039] Referring to Figure 2 and 3, according to the present invention, the
equipment for improving indoor air quality includes an indoor machine, an outdoor
machine, a pipe 138 and an electrical wire 139. The outdoor machine is an
oxygen concentrator 135. The indoor machine includes an air-supply controller
136 and an indoor air-suction purger 137. The indoor machine and the outdoor
machine are connected to the pip 138 and an electrical wire 139.
[0040] The indoor air-suction purger 137 includes a housing with grills, a filter
net, and a filter element. The filter net and the filter element are enclosed in the
housing. The air-suction purger 137 has an air inlet communicating the room so
as to suction air from the room and an air outlet connecting to an air inlet of the

oxygen concentrator through a pipe.
[0041] The oxygen concentrator includes an outer shell 13, an inner cabinet
132, an oxygen-extraction system, a temperature control equipment and a
controller. The oxygen-extraction system and the temperature control equipment
and the controller are disposed in the outer shell 13.
[0042] The controller is a computer program controller 18 attached to the inner
cabinet 132. The temperature control equipment consists of a temperature sensor
19, a heat-dissipation blower 116 and a heat exchanger 115 with a heating pipe.
The oxygen-extraction system includes an air inlet muffler 16, an air compressor
114, a gas-water separator 113, a control valve 110, a molecular sieve adsorber 112,
an oxygen container 17, a bacterium filter 15 and an oxygen restriction hole 14.
[0043] The oxygen-supply controller includes a shell 121, an operating
controller (not shown), an electromagnetic valve 120, an oxygen nozzle 123, an
anion generator 122 and a display alarm 127 of oxygen concentration detection.
The shell 121 includes an oxygen output port 126, an oxygen concentration
indicator 134, an anion output port 133 and an electrical wire interface. The
operating controller may be a manual control switch 118, a remote controller 119,
or other IC or coin-operated type switches.
[0044] The oxygen-supply controller 136, the indoor air-suction purger 137
and a power line 117 of the oxygen concentrator are positioned in the room. The
pipe 138 connects an oxygen outlet 12 of the oxygen concentrator to an oxygen
input port 130 of the oxygen-supply controller 136. The electrical wire 139
connects the computer program controller 18 of the oxygen concentrator to the
manual switch 118 of the oxygen-supply controller 136 and the display alarm 127
of oxygen concentration detection. The power line 117 connects to the panel 131
of the oxygen concentrator and the panel 131 connects to the computer program

controller 18. The air outlet of the indoor air-suction purger 137 is connected to
the air inlet 11 of the oxygen concentrator though the pipe. The oxygen
concentrator 135 is positioned in the outer shell 13. The outer shell 13 includes
an oxygen outlet 12, the air inlet 11, a blast inlet (a hole for power line) and a vent.
The air inlet 11 is connected to an inlet of the air compressor 114 via a muffler 16.
An outlet of the air compressor 114 is connected to the air-water separator 113 via
the heat exchanger 115 with the heating pipe, thereby being connected to the
control valve 110. The control valve 110 connects to the molecular sieve adsorber
112 at one end and thereof and to a vent muffler 111 at the other end thereof. An
output port of the molecular sieve adsorber 112 is connected to the oxygen
container 17. The oxygen container 17 is connected to the oxygen outlet 12 of
the oxygen concentrator by the bacterium filter 15 and the oxygen restriction hole
14. The computer program controller 18 is attached to the inner cabinet 132 and
the temperature sensor 19 thereof is mounted in the inner cabinet 132 together with
the air compressor 114, the heat exchanger 115 with the heating pipe and the vent
muffler 11. Neighboring to the heat exchanger 115, the heat-dissipation blower
116 is mounted between a vent on a sidewall of the inner cabinet 132 and a vent of
the outer shell 13.
[0045] The oxygen input port 130 of the oxygen-supply controller 136 is
connected to an inlet of a 3/2 directional electromagnetic valve 120 which is
controlled by the manual switch 118. When the manual switch 118 is turned to
"oxygen", the oxygen concentrator 135 starts to operate via a connecting wire.
An outlet of the electromagnetic valve 120 is connected to the oxygen output port
126 of the oxygen-supply controller 136 and a medical humidification pot 125, and
to the display alarm 127 of oxygen concentration detection with a bypass. When
the manual switch is turned to "anion", the anion generator 122 operates while the

oxygen machine 135 is operating, and the outlet of the electromagnetic valve 120
is turned to the oxygen nozzle 123.
[0046] According to the above-mentioned method for improving indoor air
quality and the equipment used thereof, the equipment for improving indoor air
quality includes the indoor purger 137 for performing the process of suctioning air
from the room, the outdoor oxygen concentrator 135 for performing the process of
making oxygen outside the room, and the indoor oxygen-supply controller 136 for
performing the process of supplying oxygen into the room. The following will
describe the operating principle in details.
[0047] The operating principle for improving air quality in the room is
described as follows. After the power line of the oxygen concentrator 135 is
connected to a power source, the oxygen concentrator 135 is turned on with a
switch of the indoor machine, i.e., the manual switch 118, the remote controller
119 (wireless, infrared or handset type), and IC or coin-operated type switches.
The indoor air-suction purger 137 suctions air from the room and suctioned air are
transferred into the oxygen concentrator 135 after filter and purification. Then,
after PSA, oxygen with high concentration is transferred into the indoor machine
136 through an oxygen restriction hole 14 in a constant flux after flowing through
the bacterium filter 15. Nitrogen after separation is discharged into inner cabinet
132 through the vent muffler 111, and then is exhausted into ambient atmosphere
by the blower of the air compressor 114 and the heat-dissipation blower 116.
Oxygen transferred into the indoor machine 136 meets with medical standard.
When the manual control switch 118 is turned to "oxygen", oxygen flows to the
oxygen output port 126 of the indoor machine through the electromagnetic valve
120. Some of oxygen flows into the display alarm 127 of oxygen concentration
detection through the bypass, and then flows to the oxygen output port 126 after

detection. If the oxygen output port 126 is connected with a humidification pot
125, oxygen can be supplied for breath through a straw. If the humidification pot
125 is not used, oxygen with high concentration can be jetted directly into the
room for improving indoor air quality. When the manual control switch 118 is
turned to "anion", all oxygen inputted into the room is sprayed to an anion
generator in a high speed through the oxygen nozzle 124. Then, oxygen is jetted
into the room after ionization. Oxygen with anion can purge indoor air and
improve indoor air quality. As set, the display alarm 127 of breathing oxygen
concentration detection displays oxygen concentration through an annunciator,
such as a LED, a digitron or a liquid crystal screen. When the oxygen
concentration is less than a predetermined value, a sound and light alarm will
alarm.
[0048] In the present invention, the air-suction purger 137 suctioning air from
the limited space can ensure quality of the suctioned air (through filter and
purification). In addition, in the present invention, the air compressor of the
oxygen concentrator 135 is utilized to suction air from the limited space, thereby
enhancing update of the air in the limited space.
[0049] The oxygen concentrator 135 of the present invention is designed with
the heat exchanger 115 with the heating pipe, and the air-water separator 113, so
that air compressed by the air compressor 114 can suffer heat dissipation and water
removal prior to entrance into the control valve 110 and the molecular sieve
adsorber 112. This is in favor of PSA, thereby enhancing the oxygen
concentration. The heat-dissipation blower 116 of the oxygen concentrator and
the heating pipe of the heat exchanger 115 operate under control of the computer
program controller and provide a stable operating environment for the air
compressor 114 positioned in the inner cabinet 132, which is not influenced by

ambient environment. Please be noted, the lowest operating temperature of the
present invention is 40 °C below zero.
[0050] Figure 4 illustrates connecting relationship among components.of the
oxygen-supply controller 136 of an oxygen supplier according to another
embodiment. The oxygen-supply controller 136 of the indoor machine consists
of a plurality of output nozzle 129 with a self-sealing port thereof and a socket 128
with the restriction hole thereof. The oxygen-supply controller 136 may be
equipped with a humidification pot 125 with a socket and a straw if required. The
number of the output nozzles with the self-sealing port thereof and the sockets can
be set upon the number of rooms. In the present invention, a wireless remote
controller is used to control the outdoor oxygen concentrator 135 directly. After
the outdoor oxygen concentrator 135 start to operate, if the socket 128 is connected,
a certain of oxygen can be supplied to the room with the socket 128. If the
humidification pot 125 is connected, oxygen can be supplied to a person with the
straw.
[0051] In addition, the present invention can be applied in a limited space, such
as an automobile. The operating principle and structure is similar to the
above-mentioned oxygen concentration equipment, and the description is omitted
herein. The detailed description is disclosed in Chinese Patent No. 032608ll.X
filed on August 8, 2003.
[0052] The oxygen concentration equipment of the present invention can be
used together with an air conditioner. Referring to Figure 5, a method for
improving air quality in the limited space according to another embodiment of the
present invention includes the following processes: a circulating process of air in
the limited space, a process of disinfecting, a process of cooling and
dehumidification (air heating), a process of cooling (heating) of outdoor air

conditioner, a process of suctioning air from the limited space, a process of making
oxygen outside the limited space, a process of supplying oxygen into the limited
space and a process of supplementing air into the limited space.
[0053] The detail steps are as below:
[0054] First, during the circulating process of air in the limited space, air in the
limited space circularly flows through a disinfecting equipment such that the
process of disinfecting is accomplished. Air after disinfecting then circularly
flows through the heat exchanger such that a process of cooling and
dehumidification (heating) is accomplished, thereby achieving temperature
regulation and disinfecting in the limited space. Meanwhile, air is suctioned from
the limited space and suctioned air is purged as an air source for making oxygen,
thereby accomplishing the process of suctioning air from the limited space. Air
after purification is transferred out of the limited space for the process of making
oxygen outside the limited space. The nitrogen separated in the oxygen
extraction is exhausted into ambient atmosphere, and the oxygen separated is
transferred into the limited space for the process of supplying oxygen into the
limited space. In addition, because the nitrogen separated from the suctioned air
from the limited space is exhausted into ambient atmosphere, the oxygen
transferred into the limited space is less than the suctioned air from the limited
space, thereby creating a pressure difference between the limited space and
ambient atmosphere. Ambient fresh air flows into the limited space through the
air balance filter, thereby updating air in the limited space and accomplishing the
process of supplementing air into the limited space. Therefore, air quality in the
limited space is effectively improved.
[0055] Referring to Figures 6 and 7, the equipment for improving air quality in
the limited space according the present invention includes an outer machine 217,

an inner machine 232, an air balance filter 233, and connecting pipes 23, 24, 25, 26
and electrical wires 21, 22 connecting the outer machine 232 and the inner
machine 217. The outer machine 217 is positioned outside the limited space, and
the inner machine 232 is positioned inside the limited space. As an air supplier in
the present invention, the air balance filter 233 is positioned between the limited
space and ambient atmosphere.
[0056] The outer machine 217 includes an outer shell 2170, an air conditioning
cooling (heating) machine 210, an oxygen concentrator 27 and a controller. The
air conditioning cooling (heating) machine 210, the oxygen concentrator 27 and
the controller are positioned in the outer shell 2170. In addition, the outer shell
2170 has a liquid valve29, a gas valve 28, an air inlet a, an oxygen output port b
and an electrical interfaces c and d. The air conditioning cooling (heating)
machine is a well-known product, and its detail description is omitted herein. The
controller includes a controller 212 of the air conditioning cooling (heating)
machine 210 and a controller 218 of the oxygen concentrator 27. Furthermore,
the controller may be a composed controller, which can control both the air
conditioning cooling (heating) machine 210 and the oxygen concentrator 27. The
controller is connected to the electrical interface c of the outer machine via a wire.
[0057] The inner machine 232 includes an inner machine set for air
conditioning (heating) (not shown), a disinfecting equipment 227, an
oxygen-supply controller, an operating controller 230 and an air-suction purger 224.
In addition, the indoor machine 232 has a gas pipe port f for an air conditioner, a
liquid pipe port g, an air output port m and an oxygen input port e. The liquid
valve 29 and the gas valve 28 of the outer machine 217 are connected to the liquid
pipe port g and the gas pipe port f of the inner machine 232 respectively via a
liquid pipe 24 and a gas pipe 36. Furthermore, the air input port a of the outer

machine 217 is connected to the air output port m of the inner machine 232
through the connecting pipe 23.
[0058] The inner machine set for air conditioning cooling (heating) includes an
inner blower 226 for circulating air and a heat exchanger (evaporator) 231. The
heat exchanger 231 is connected to the liquid pipe port g and the gas pipe port f via
pipes. In addition, the inner machine set for air conditioning cooling (heating) is
a well-known product and its detail description is omitted herein. The
disinfecting equipment is a multiple air treatment means, and it includes an air
filter 227a, a cellular high-voltage field generator 227b, a micro-dust collector
227c, double layers of Photocatalyst and Silver Nano 227d, 227f, an ultraviolet
disinfecting equipment 227e and an anion generator 227g. The disinfecting
equipment 227 and the inner machine set of the air conditioning cooling (heating)
share a common set of inner blower 226.
[0059] The oxygen-supply controller includes an oxygen output nozzle 229
with a self-sealing port thereof and a humidification pot 228 with an input socket
and an output straw. The oxygen output nozzle 229 with the self-sealing port is
connected to the oxygen input port e of the inner machine 232 via an oxygen pipe
at one end thereof and to the input socket of the humidification pot 228 at the other
end thereof.
[0060] The air-suction purger 224 has an air inlet and an air outlet. The air
inlet is connected to a circulation flue of the inner machine 232 and the air outlet is
connected to the air output port m of the inner machine. The air-suction purger
224 may include a housing with an air grill, a filter screen, and a filter element.
The filter screen and the filter element are enclosed inside the housing.
[0061] The operating controller 230 is such a controller that control air
conditioning cooling (heating) system, the disinfecting equipment and the outdoor

oxygen concentrator. The air conditioning cooling (heating) system includes an
air conditioning cooling (heating) machine 210 in the outer machine and an inner
machine set of air conditioning cooling (heating) in the inner machine. The
operating controller and the controllers 212, 218 in the outer machine is connected
together through a controlling wire and work together. They may separately
control the operation of the cooling (heating) system, or all or a part of the
operation of the disinfecting equipment. In addition, they may control the
operation of the oxygen concentrator separately or control all the equipments
synchronously.
[0062] The air balance filter 233 is mounted on an outer wall of the limited
space with its inlet communicating with ambient atmosphere and its outlet
communicating with the limited space. When there is a negative pressure
occurred, the air balance filter begins to operate and transfers fresh air into the
limited space.
[0063] According to the above-mentioned equipment, the oxygen
concentration equipment accomplishes the circulating process of air in the limited
space via the blower 226 of the inner machine 232, the process of disinfecting via
the disinfecting equipment 227 of the inner machine 232, the process of air cooling
(or heating) via the heat exchanger (evaporator) 231 of the inner machine 233 and
the air cooling (heating) machine 210 of the outer machine 217, the process of
suctioning air from the limited space via the air-suction purger 224, the process of
making oxygen outside the limited space via the oxygen concentrator 27 of the
outer machine, and the process of supplying oxygen into the limited space via the
oxygen-supply controllers 229, 230 of the inner machine.
[0064] When the power socket 234 of the inner machine 232 is connected to a
power source, all or a part of the equipment may be actuated to work by the

operating controller 230 or the remote controller 225 of the inner machine 232.
When cooling starts, as shown in Figure 6, refrigerant agent pressurized by the
compressor 216 of the air conditioner is transferred into a condenser 214 through a
shuttle valve 213. As the compressor 216 of the air conditioner collaborates with
the outdoor blower 215, the refrigerant agent is refrigerated and liquefied. The
refrigerant agent flows through a throttle equipment 211 and flows into the heat
exchanger (evaporator) 231 of the inner machine through the liquid valve 29 and
liquid pipe 24. The refrigerant agent expands and absorbs heat. Meanwhile, the
air circulated by the inner blower 226 flows through the heat exchanger
(evaporator) 231 and is refrigerated. Then, the air is transferred into the limited
space from air outlet of the inner machine. During heating state, the shuttle valve
213 changes over. The refrigerant agent pressurized by the compressor 216 of the
air conditioner flows into the heat exchanger 231 of the inner machine. Under
influence of the air circulated by the inner blower, the refrigerant agent radiates
heat and the circulating air is heated. The refrigerant agent after cooling and
liquefaction flows through the restriction equipment 211 in a reversed direction and
then expand to absorb heat in the condenser 214 of the outer machine.
[0065] As the disinfecting equipment 227 operates, the inner blower 226
circulates the air in the limited space into the disinfecting equipment 227 for
disinfecting through a filter, such as the cellular high-voltage field 227b, the
ultraviolet disinfector 227e, and the anion generator 227g. Even if the
disinfecting equipment does not operate, as the air conditioning cooling (heating)
functions, the circulating air may be purged as flowing through the disinfecting
equipment.
[0066] When the oxygen concentration system operates, the air compressor
221 of the oxygen concentrator 27 suctions air from the limited space via the

air-suction purger 224 of the inner machine 232. The suctioned air flows into the
oxygen concentrator 27 after purification. The oxygen resulted from air
separation flows into the oxygen-supply controller of the inner machine in a
constant flux. Then, the oxygen flows into the limited space for breath via the
oxygen output port 229 with the self-sealing port and the humidification pot 228.
For example, the output of the humidification pot 228 may be coupled with a straw.
[0067] The oxygen concentrator 27 is equipped with a heater 222 and a
temperature controller so as to ensure a normal operation under 40°C under zero.
[0068] According to the present invention, in order to prevent danger, such as
explode induced by mixture of air in the limited space and the oxygen inputted into
the limited space, the ration of suctioned air in the process of suctioning air from
the limited space to oxygen extracted in the process of making oxygen process and
inputted into the limited space maintain more than 10. Furthermore, the air
supplemented in the air supplement process equals the difference between the
suctioned air in the process of suctioning air from the limited space and the
supplied oxygen in the process of supplying oxygen. Therefore, the oxygen
concentration in the limited space may be enhanced, and can be ensured under
safety limits.

I CLAIM:
1. A method for improving air quality in a limited space, comprising:
a process of suctioning air from the limited space, comprising suctioning air from
the limited space and transferring them outside the limited space as an air source for
making oxygen;
a process of making oxygen outside the limited space, comprising extracting
oxygen from the air source transferred outside the limited space, and directly
discharging waste gas generated therefrom outside the limited space;
a process of supplying oxygen into the limited space, comprising transferring
extracted oxygen into the limited space and supplying the oxygen via an oxygen-supply
controller; and
a process of supplementing air into the limited space, comprising supplying air into
the limited space during the process of suctioning air from the limited space.
wherein the oxygen is supplied to users in the limited space via a humidification
pot and a straw during the process of supplying air into the limited space.
2. A method for improving air quality in a limited space, comprising :
a process of suctioning air from the limited space, comprising suctioning air from
the limited space and transferring them outside the limited space as an air source for
making oxygen;
a process of making oxygen outside the limited space, comprising extracting
oxygen from the air source transferred outside the limited space, and directly
discharging waste gas generated therefrom outside the limited space;
a process of supplying oxygen into the limited space, comprising transferring
extracted oxygen into the limited space and supplying the oxygen via an oxygen-supply
controller; and
a process of supplementing air into the limited space, comprising supplying air into
the limited space during the process of suctioning air from the limited space.

wherein the oxygen is transferred into the limited space after ionization in an
oxygen nozzle and an anion generator during the process of supplying air into the
limited space.
3. The method as claimed in claim 1 or claim 2, which involves:
a circulating process of air in the limited space, comprising circulating air in the
limited space through a disinfecting equipment and a heat exchanger so as to achieve
temperature control and disinfecting in the limited space.
4. The method as claimed in claim 1 or claim 2, wherein the process of
supplementing air into the limited space starts as a negative pressure occurs in the
limited space
5. The method as claimed in claim 1 or claim 2, wherein the ratio of the air
suctioned in the process of suctioning air from the limited space to the oxygen extracted
in the process of making oxygen outside the limited space and supplied in the process of
supplying oxygen into the limited space is more than 10, and the air supplemented in the
process of air supplement equals the difference between suctioned air in the process of
suctioning air from the limited space and supplied oxygen in the process of supplying
oxygen into the limited space.
6. An equipment for improving air quality in a limited space, comprising:
an inner machine positioned inside the limited space, comprising an air-suction
purger and an oxygen-supply controller, wherein the air-suction purger comprises an air
outlet and an air inlet communicating with the limited space, and the oxygen-supply
controller comprises an oxygen input port and an oxygen output port;
an outer machine comprising an air inlet and an oxygen outlet, the air inlet being
connected to the air outlet of the air-suction purger, the oxygen outlet being connected to
the oxygen input port of the oxygen-supply controller; and

an air supplement equipment comprising an air input and an air output, the air input
being outside the limited space and the air output being in the limited space.
wherein the outer machine comprises an outer shell, an inner cabinet, an oxygen-
extraction system, a temperature control equipment and a controller, the oxygen-
extraction system, the temperature control equipment and the controller being disposed
in the outer shell;
wherein the oxygen-extraction system comprises an air input muffler, an air
compressor, a gas-water separator, a control valve and a bacterium filter, the gas-water
separator being connected to the control valve.
7. The equipment as claimed in claim 6, wherein the air-suction purger comprises a
housing with air grills, a filter net and a filter element, wherein the filter net and the
filter element are enclosed in the housing.
8. The equipment as claimed in claim 6, wherein the air supplement equipment is
an air balance filter positioned between the limited space and ambient atmosphere.
9. The equipment as claimed in claim 6, wherein the oxygen-supply controller
comprises a control switch, an electromagnetic valve, a medical humidification pot, a
straw and a display alarm for detection of breathing oxygen concentration.

10. The equipment as claimed in claim 6, wherein the oxygen-supply controller
comprises an oxygen nozzle, an anion generator and an anion output, wherein the anion
generator comprises a carbon fibre head.
11. The equipment as claimed in claim 6, wherein the temperature control
equipment comprises a heat-dissipation blower and a heat exchanger with a heating
pipe, the heat exchanger being connected to the air compressor and the gas-water
separator, and the heat-dissipation blower is mounted between the inner shell and the
outer shell.

12. The equipment as claimed in any of claims 6 to 10, wherein the outer machine
comprises an outer shell, and an air conditioning machine and an oxygen concentrator
disposed in the outer shell.
13. The equipment as claimed in any of claims 6 to 10, wherein the inner machine
comprises an inner machine set for air conditioning and a disinfecting equipment.
14. The equipment as claimed in claim 13, wherein the inner machine for air
conditioning comprises an inner blower for circulating air and a heat exchanger.
15. The equipment as claimed in claim 13, wherein the disinfecting equipment
comprises an air filter, a high-voltage field generator, a micro-duster collector, double
layers of Photocatalyst and Silver Nano, an ultraviolet disinfector and an anion
generator.


An equipment for improving air quality in a limited space, comprising:
an inner machine positioned inside the limited space, comprising an air-suction
purger(137) and an oxygen-supply controller (136), wherein the air-suction purger
comprises an air outlet and an air inlet communicating with the limited space, and the
oxygen-supply controller comprises an oxygen input port and an oxygen output port;
an outer machine(135) comprising an air inlet and an oxygen outlet, the air inlet
being connected to the air outlet of the air-suction purger, the oxygen outlet being
connected to the oxygen input port of the oxygen-supply controller; and
an air supplement equipment comprising an air input and an air output, the air input
being outside the limited space and the air output being in the limited space.

wherein the outer machine comprises an outer shell(121), an inner cabinet, an
xygen-extraction system, a temperature control equipment and a controller, the oxygen-
extraction system, the temperature control equipment and the controller being disposed
in the outer shell; and
wherein the oxygen-extraction system comprises an air input muffler, an air
compressor, a gas-water separator, a control valve and a bacterium filter, the gas-water
separator being connected to the control valve.

Documents:

02484-kolnp-2005-abstract.pdf

02484-kolnp-2005-claims.pdf

02484-kolnp-2005-description complete.pdf

02484-kolnp-2005-drawings.pdf

02484-kolnp-2005-form 1.pdf

02484-kolnp-2005-form 3.pdf

02484-kolnp-2005-form 5.pdf

02484-kolnp-2005-international publication.pdf

2484-KOLNP-2005-CORRESPONDENCE 1.1.pdf

2484-kolnp-2005-correspondence-1.2.pdf

2484-kolnp-2005-correspondence.pdf

2484-kolnp-2005-examination report.pdf

2484-kolnp-2005-form 18.pdf

2484-kolnp-2005-form 3.pdf

2484-kolnp-2005-form 5.pdf

2484-KOLNP-2005-FORM-27.pdf

2484-kolnp-2005-gpa.pdf

2484-kolnp-2005-granted-abstract.pdf

2484-kolnp-2005-granted-claims.pdf

2484-kolnp-2005-granted-description (complete).pdf

2484-kolnp-2005-granted-drawings.pdf

2484-kolnp-2005-granted-form 1.pdf

2484-kolnp-2005-granted-form 2.pdf

2484-kolnp-2005-granted-specification.pdf

2484-kolnp-2005-intenational publication.pdf

2484-kolnp-2005-international search report.pdf

2484-kolnp-2005-others-1.1.pdf

2484-kolnp-2005-others.pdf

2484-kolnp-2005-pct priority document notification.pdf

2484-KOLNP-2005-PETITION UNDER RULE 137.pdf

2484-kolnp-2005-reply to examination report.pdf

2484-KOLNP-2005-TRANSLATED COPY OF PRIORITY DOCUMENT.pdf

abstract-02484-kolnp-2005.jpg


Patent Number 246772
Indian Patent Application Number 2484/KOLNP/2005
PG Journal Number 11/2011
Publication Date 18-Mar-2011
Grant Date 15-Mar-2011
Date of Filing 05-Dec-2005
Name of Patentee LIN LOUFEI
Applicant Address NO. 338 NINGKANG WEST ROAD, YUEQING ZHEJIANG 32560, CHINA
Inventors:
# Inventor's Name Inventor's Address
1 LIN LOUFEI NO. 338 NINGKANG WEST ROAD, YUEQING ZHEJIANG 32560, CHINA
PCT International Classification Number F24F 3/16
PCT International Application Number PCT/CN2004/000565
PCT International Filing date 2004-05-28
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 03153313.2 2003-08-08 China
2 03136962.6 2003-05-28 China