Title of Invention	"DEVICE FOR SENSING AND BLOCKING FROTH IN A HOME MACHINE FOR MANUFACTURING SOYBEAN MILK WATERY BEAN CURD AND BEAN CURD"
Abstract	Disclosed is a device for sensing and blocking froth in a home machine for manufacturing soybean milk, watery bcan curd, and bean curd, which allows a heater not to be operated only when the home manufacturing machine contains froth, so as to remove froth, thereby preventing the machine from getting damaged. As shown in Fig2, the device includes a ground electrode El and a signal electrode E2; a first resistor R28 connected to the signal electrode; a first switching transistor Q10 connected to the first resistor; a controller IC1 connected to the first switching transistor for outputting a control signal for blocking a froth when the froth is sensed; a second resistor R8 connected to the controller; a second switching transistor Q4 connected to the second resistor; a heater relay coil Ra connected to the second switching transistor; and a third switching transistor Q6 connected to the second switching transistor.

Title of Invention

"DEVICE FOR SENSING AND BLOCKING FROTH IN A HOME MACHINE FOR MANUFACTURING SOYBEAN MILK WATERY BEAN CURD AND BEAN CURD"

Abstract

Disclosed is a device for sensing and blocking froth in a home machine for manufacturing soybean milk, watery bcan curd, and bean curd, which allows a heater not to be operated only when the home manufacturing machine contains froth, so as to remove froth, thereby preventing the machine from getting damaged. As shown in Fig2, the device includes a ground electrode El and a signal electrode E2; a first resistor R28 connected to the signal electrode; a first switching transistor Q10 connected to the first resistor; a controller IC1 connected to the first switching transistor for outputting a control signal for blocking a froth when the froth is sensed; a second resistor R8 connected to the controller; a second switching transistor Q4 connected to the second resistor; a heater relay coil Ra connected to the second switching transistor; and a third switching transistor Q6 connected to the second switching transistor.

Full Text	BACKGROUND OF THE INVENTION Field of the invention The present invention relates to a device for sensing and blocking froth in a home machine for manufacturing soybean milk, watery bean curd, and bean curd, and more particularly to a device for sensing and blocking froth in a home machine for manufacturing soybean milk, watery bean curd, and bean curd, which allows a heater not to be operated only when the home manufacturing machine contains froth, so as to remove froth, thereby preventing the machine from getting damaged. Description of the Prior Art A conventional method for domestic use which manufactures soybean milks, watery bean curds, and bean curds will be described herein below. First, the soybeans are washed clean. The washed beans are then soaked and made swollen in the water for several hours to be easily pulverized. The swollen beans are pulverized by using a millstone or a mixer, so that raw bean juice is produced. The raw bean juice is divided into bean-curd refuse and protein juice using a fine sieve gin or cloth. The divided 1A protein juice is put in a kettle or a receptacle and boiled. At this time, since froth inevitably forms and causes the kettle or receptacle to overflow, the protein juice is boiled while repeatedly and artificially adjusting thermal power with care so that the froth does not overflow. After boiling the protein juice enough, an addition such as sugar or salt is put in the boiled protein juice to manufacture potable soybean milk. Also, after boiling the protein juice enough, a predetermined amount of coagulating agent such as calcium sulfate or the like is added to the boiled protein juice. After the coagulating agent-added protein juice is stirred, when several minutes elapse, it becomes a watery bean curd. The watery bean curd is put in a forming device and compressed and formed to manufacture bean curd. However, in the conventional method for domestic use which manufactures soybean milks, watery bean curds, and bean curds, since several processes are separately performed, it is inconvenient. Since the manufacturing process is complicated and it takes a lot of time, the conventional method is inefficient. In particular, it takes a lot of time to make the beans swell. It is difficult to suitably adjust the amount of beans. The recovery rate of the protein juice is relatively low and it is difficult to manage a clean status. In order to solve such problems, apparatuses capable of simply and conveniently manufacturing soybean milks, watery 2 bean curds, and bear, curds are proposed. Hereinafter, such conventional apparatus for domestic use which manufactures soybean milks, watery- bean curds, and bean curds will be described with reference to FIG, 1. The conventional apparatus includes a body, a driving mcbr, a short driving shaft, a long driving shaft, a knife edge, a heater and a temperature sensor. A cover is installed at a upper portion of the body. The body is opened and closed by the cover. The driving motor is installed at the cover of the body. When a power is applied to the driving motor, the driving motor provides a rotating power. The short driving shaft serves as a rotary shaft of the driving motor. The long driving shaft is detachably fitted to the shorter driving shaft. The knife edge is connected to an end portion of the long driving shaft. The heater heats contents included in the body. The temperature sensor senses a heating temperature of the contents included in the body. An operation of the conventional apparatus for domestic use which manufactures soybean milks, watery bean curds, and bean curds will now be explained. Then a user puts bears and water into the interior of the body and inputs a power to a controller (not shown) , the controller operates the driving motor. Then the driving motor controls the knife edge 10 pulverize the beans and water. The controller operates the heater and the temperature sensor to perform a series of processes, in which the beans and water are heated at a predetermined temperature, so that the soybean milks, watery bean curds, and bean curds are sequentially manufactured. However, in the conventional apparatus for domestic use which manufactures soybean milks, watery bean curds, and bean curds, if a user operates the conventional apparatus in a state in which the froth forms and overflow during manufacturing process, the contents included in the body are spoilt and the conventional apparatus gets damaged. The copending Indian patent application no. 4 3 0CAL2 0 02, discloses a " device " for sensing and signalling absence of water in a home machine for manufacturing soybean milk, watery bean curd, and bean curd SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a device for sensing and blocking froth in a home machine for manufacturing soybean milk, watery bean curd, and bean curd, which allows a heater not to be operated only when the hone manufacturing machine contains frcth, so as to remove the occurrence of froth, thereby preventing the machine from getting damaged. 4 In order to accomplish this object, there is provided a device for sensing and blocking froth in an apparatus for manufacturing soybean milk, watery bean curd, and bean curd, the apparatus being in domestic use, the apparatus including a plurality of components installed in a body, the device comprising: a ground electrode and a signal electrode electrically connected'to two selected in the plurality of the components, respectively; a first resistor connected to the signal electrode; a first switching transistor connected to the first resistor; a controller connected to the first switching transistor for outputting a control signal for blocking a froth when the froth is sensed; a second resistor connected to the controller; a second switching transistor connected to the second registor; a heater relay coil connected to the second switching transistor; and a third switching transistor connected to the second switching transistor. In this case, the ground electrode and the signal electrode may be electrically connected to a heater and a temperature sensor. BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying 5 drawings, in which: PIG. 1 "is a sectional view for showing a conventional apparatus for domestic use which manufactures soybean milks, watery bear, curds, and bean curds; FIG. 2 is a circuitry diagram which shows a device for sensing and blocking froth in a home machine for manufacturing soybean milk, watery bean curd, and bean curd according to an embodiment of the present invention; and FIG. 3 is a sectional view for showing a device having two electrodes which are electrically connected to a heater and a temperature sensor t respectively, which senses froth in soybean milk, watery bean curd, and bean curd manufacturing apparatus for domestic use and generates an block signal indicative of the sensed result according to the present invention; PRIOR ART DESCRIPTION FIG. 1 is a sectional view for showing a conventional apparatus for domestic use which manufactures soybean milks, water/ bean curds, and bean curds. As shown in FIG. 1, the conventional apparatus includes a body 1, a driving motor 2, a short driving shaft 3, a long driving shaft 4, a knife edge 5, a heater 6, and a temperature sensor 7. A cover is installed at a upper portion of the body 1. The body 1 is opened and closed by the cover. The driving motor 2 is installed at the cover of the body 1. When a power is applied to the driving motor 2, the driving motor 2 provides a rotating power. The short driving shaft 3 serves as a rotary shaft of the driving motor 2. The long driving shaft 4 is detachably fitted to the shorter driving^ shaft 3. The knife edge 5 is connected to an end portion of the long driving; shaft 4. The heater 6 heats contents included in the body 1. The temperature sensor 7 senses a heating temperature of the contents included in the body 1. An operation of the conventional apparatus for dearestic bean curds will HOT be explained. When a user puts ceans ana water into the interior of the body 1 and inputs a power to a controller (not shown), the controller operates the driving motor 2. Then the driving motor 2 controls the knife edge 5 to pulverize the beans and water. - The controller operates the heater 6 and the temperature sensor 7 r.o perform a series of processes, in which the beans and water are heated at a predetermined temperature, so that the soybean milks, watery bean curds, and bean curds are sequentially manufactured. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENRS Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description and drawings, the same reference numerals are used to designate the same or similar components, and so repetition of the description on the same or similar components will be omitted. A device for sensing the froth in soybean milk, watery bear, curd, and bean curd manufacturing apparatus for domestic use and generating a blocking signal indicative of the sensed result will ce explained herein referring to FIG. 2 below. FIG. 2 is a circuitry diagram which shows the device for sensing and blocking froth in a hcme machine for manufacturing soybean milk, watery bean curd, and bean curd according to an embodiment of the present invention. As shown in FIG. 2, the device includes a ground electrode El, a signal electrode E2, a resistor R28, a switching transistor Q10, a controller I.Cl, a resistor R8, a switching transistor Q4, a heater coil Ra and a switching transistor 06. The ground electrode El and the signal electrode E2 are connected to two selected in components installed in a body 1, respectively. The resistor R28 is connected to the signal electrode E2. The switching transistor Q10 is connected to the resistor R28. The controller I.Cl is connected to the switching transistor Q10. The controller I.Cl outputs a control signal for blocking froth when the froth is sensed. The resistor R8 is connected to the controller I.Cl. The switching transistor Q4 is connected to the resistor R8. The -heater relay coil Ra is connected to the switching transistor Q4 • The switching transistor Q6 is connected to the switching transistor 0.4 . Hereinafter, an operation of the device for sensing and blocking froth in a hone machine tot manufacturing soybean 7 milk, watery bean curd, and bean curd according the present invention will be described. When a user puts beans and water into the interior of the body 1 and inputs a power to a controller I.Cl, the controller I. Cl operates the driving motor 2. Then the driving motor 2 controls the knife edge 5 to pulverize the beans and water. The controller operates the heater 6 and the temperature sensor 7 to perform a series of processes, in which the beans and water are heated at a predetermined temperature, so that the soybean milks, watery bean curds, and bean curds are sequentially manufactured. When the heater 6 is operated during manufacturing process of soybean miIks, watery bean curds, and bean curds, the controller I.Cl judges whether or not froth is generated in the interior of the body 1 in response to a signal inputted from the signal electrode E2 through the resistor R28 and the switching transistor Q10. When the froth is present in the interior of the body 1, the ground electrode El and the signal electrode E2 are electrically connected to each other by means of the froth. Accordingly, a ground electric potential is applied to a base of the switching transistor Q10 to turn off the switching transistor Q10. When the froth is absent in the interior of the body 1, the ground electrode El and the signal electrode E2 are electrically disconnected from each other. Accordingly, a 8 non-ground electric potential is applied to the base of the switching transistor QiO to turn on the switching transistor Q10. The around electrode El and the signal electrode E2 are used in connection to two selected components installed in the body, respectively. FIG. 3 shows device having the ground electrode El and the signal electrode E2 which are electrically connected to two selected components in the body 1. As shown in FIG. 3, the ground electrode El and the signal electrode E2 which are electrically connected to a heater 6 and a temperature sensor 7 respectively. When the froth is present between the ground electrode El and the signal electrode E2, the switching transistor QIO is turned off. Accordingly, the controller I.Cl drives the switching transistor Q4 connected to an output terminal of the controller I.Cl. The switching transistor Q4 drives and does inot operate the heater relay coil Ra driving for the heaterE6 to remove the occurrence of the froth. As mentioned above, the present invention can provides an apparatus for sensing and blocking froth is present in a machine for manufacturing soybean milk, a watery bean curd, and a bean curd, which allows a heater not to be operated only when the home manufacturing machine contains froth, thereby preventing the machine from getting damaged. The present invention can be applied and used in an apparatus field which 9 manufactures soybean milks, watery bean curds, and bean curds, without departing from the scope and spirit of the invention. Although a preferred embodiment of the present invention has been described for illustrative purposes, those skilled in 5 the art will appreciate that various modifications, additions and substitutions, are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. I CLAIM: 1. A device for sensing and blocking froth in an apparatus for manufacturing soybean milk, watery bean curd, and bean curd, the apparatus being in domestic use, the apparatus including a plurality of components installed in a body, the device comprising: a ground electrode and a signal electrode electrically connected to two selected in the plurality of the components, respectively; a first resistor connected to the signal electrode; a first switching transistor connected to the first resistor; a controller connected to the first switching transistor for outputting a control signal for blocking a froth when the froth is sensed; a second resistor connected to the controller; a second switching transistor connected to the second resistor; a heater coil connected to the second switching transistor; and a third switching transistor connected to the second switching transistor. 2. The device as claimed in claim 1, wherein the ground 11 electrode and the signal electrode are electrically connected to a heater and a temperature sensor, respectively. 13 3. A device for sensing and blocking froth in an apparatus for manufacturing soybean milk, watery bean curd and bean curd, substantially as herein described, particularly with reference to the accompanying drawings. Disclosed is a device for sensing and blocking froth in a home machine for manufacturing soybean milk, watery bcan curd, and bean curd, which allows a heater not to be operated only when the home manufacturing machine contains froth, so as to remove froth, thereby preventing the machine from getting damaged. As shown in Fig2, the device includes a ground electrode El and a signal electrode E2; a first resistor R28 connected to the signal electrode; a first switching transistor Q10 connected to the first resistor; a controller IC1 connected to the first switching transistor for outputting a control signal for blocking a froth when the froth is sensed; a second resistor R8 connected to the controller; a second switching transistor Q4 connected to the second resistor; a heater relay coil Ra connected to the second switching transistor; and a third switching transistor Q6 connected to the second switching transistor.

Full Text

BACKGROUND OF THE INVENTION
Field of the invention
The present invention relates to a device for sensing and blocking froth in a home machine for manufacturing soybean milk, watery bean curd, and bean curd, and more particularly to a device for sensing and blocking froth in a home machine for manufacturing soybean milk, watery bean curd, and bean curd, which allows a heater not to be operated only when the home manufacturing machine contains froth, so as to remove froth, thereby preventing the machine from getting damaged.
Description of the Prior Art
A conventional method for domestic use which manufactures soybean milks, watery bean curds, and bean curds will be described herein below.
First, the soybeans are washed clean. The washed beans are then soaked and made swollen in the water for several hours to be easily pulverized. The swollen beans are pulverized by using a millstone or a mixer, so that raw bean juice is produced. The raw bean juice is divided into bean-curd refuse and protein juice using a fine sieve gin or cloth. The divided
1A

protein juice is put in a kettle or a receptacle and boiled. At this time, since froth inevitably forms and causes the kettle or receptacle to overflow, the protein juice is boiled while repeatedly and artificially adjusting thermal power with care so that the froth does not overflow. After boiling the protein juice enough, an addition such as sugar or salt is put in the boiled protein juice to manufacture potable soybean milk. Also, after boiling the protein juice enough, a predetermined amount of coagulating agent such as calcium sulfate or the like is added to the boiled protein juice. After the coagulating agent-added protein juice is stirred, when several minutes elapse, it becomes a watery bean curd. The watery bean curd is put in a forming device and compressed and formed to manufacture bean curd.
However, in the conventional method for domestic use which manufactures soybean milks, watery bean curds, and bean curds, since several processes are separately performed, it is inconvenient. Since the manufacturing process is complicated and it takes a lot of time, the conventional method is inefficient. In particular, it takes a lot of time to make the beans swell. It is difficult to suitably adjust the amount of beans. The recovery rate of the protein juice is relatively low and it is difficult to manage a clean status.
In order to solve such problems, apparatuses capable of simply and conveniently manufacturing soybean milks, watery
2

bean curds, and bear, curds are proposed. Hereinafter, such conventional apparatus for domestic use which manufactures soybean milks, watery- bean curds, and bean curds will be described with reference to FIG, 1.
The conventional apparatus includes a
body, a driving mcbr, a short driving shaft, a long driving shaft, a knife edge, a heater and a temperature sensor. A cover is installed at a upper portion of the body. The body is opened and closed by the cover. The driving motor is installed at the cover of the body. When a power is applied to the driving motor, the driving motor provides a rotating power. The short driving shaft serves as a rotary shaft of the driving motor. The long driving shaft is detachably fitted to the shorter driving shaft. The knife edge is connected to an end portion of the long driving shaft. The heater heats contents included in the body. The temperature sensor senses a heating temperature of the contents included in the body.
An operation of the conventional apparatus for domestic use which manufactures soybean milks, watery bean curds, and bean curds will now be explained.
Then a user puts bears and water into the interior of the

body and inputs a power to a controller (not shown) , the controller operates the driving motor. Then the driving motor controls the knife edge 10 pulverize the beans and water. The controller operates the heater and the temperature sensor to perform a series of processes, in which the beans and water are heated at a predetermined temperature, so that the soybean milks, watery bean curds, and bean curds are sequentially manufactured.
However, in the conventional apparatus for domestic use which manufactures soybean milks, watery bean curds, and bean curds, if a user operates the conventional apparatus in a state in which the froth forms and overflow during manufacturing process, the contents included in the body are spoilt and the conventional apparatus gets damaged.
The copending Indian patent application no. 4 3 0CAL2 0 02, discloses a " device " for sensing and signalling absence of water in a home machine for manufacturing soybean milk, watery bean curd, and bean curd
SUMMARY OF THE INVENTION
Accordingly, the present invention has been made to solve
the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a device for sensing and blocking froth in a home machine for manufacturing soybean milk, watery bean curd, and bean curd, which allows a heater not to be operated only when the hone manufacturing machine contains frcth, so as to remove the occurrence of froth, thereby preventing the machine from getting damaged.
4

In order to accomplish this object, there is provided a device for sensing and blocking froth in an apparatus for manufacturing soybean milk, watery bean curd, and bean curd, the apparatus being in domestic use, the apparatus including a plurality of components installed in a body, the device comprising: a ground electrode and a signal electrode electrically connected'to two selected in the plurality of the components, respectively; a first resistor connected to the signal electrode; a first switching transistor connected to the first resistor; a controller connected to the first switching transistor for outputting a control signal for blocking a froth when the froth is sensed; a second resistor connected to the
controller; a second switching transistor connected to the second registor; a heater relay coil connected to the second
switching transistor; and a third switching transistor connected to the second switching transistor.
In this case, the ground electrode and the signal electrode may be electrically connected to a heater and a temperature sensor.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying
5

drawings, in which:
PIG. 1 "is a sectional view for showing a conventional apparatus for domestic use which manufactures soybean milks, watery bear, curds, and bean curds;
FIG. 2 is a circuitry diagram which shows a device for sensing and blocking froth in a home machine for manufacturing soybean milk, watery bean curd, and bean curd according to an embodiment of the present invention; and
FIG. 3 is a sectional view for showing a device having two electrodes which are electrically connected to a heater and a temperature sensor t respectively, which senses froth in soybean milk, watery bean curd, and bean curd manufacturing apparatus for domestic use and generates an block signal indicative of the sensed result according to the present invention;
PRIOR ART DESCRIPTION
FIG. 1 is a sectional view for showing a conventional apparatus for domestic use which manufactures soybean milks, water/ bean curds, and bean curds. As shown in FIG. 1, the conventional apparatus includes a body 1, a driving motor 2, a short driving shaft 3, a long driving shaft 4, a knife edge 5,

a heater 6, and a temperature sensor 7. A cover is installed at a upper portion of the body 1. The body 1 is opened and closed by the cover. The driving motor 2 is installed at the cover of the body 1. When a power is applied to the driving motor 2, the driving motor 2 provides a rotating power. The short driving shaft 3 serves as a rotary shaft of the driving motor 2. The long driving shaft 4 is detachably fitted to the shorter driving^ shaft 3. The knife edge 5 is connected to an end portion of the long driving; shaft 4. The heater 6 heats contents included in the body 1. The temperature sensor 7 senses a heating temperature of the contents included in the
body 1.
An operation of the conventional apparatus for dearestic
bean curds will HOT be explained.
When a user puts ceans ana water into the interior of the body 1 and inputs a power to a controller (not shown), the
controller operates the driving motor 2. Then the driving motor 2 controls the knife edge 5 to pulverize the beans and water. - The controller operates the heater 6 and the temperature sensor 7 r.o perform a series of processes, in which the beans and water are heated at a predetermined temperature, so that the soybean milks, watery bean curds, and bean curds are sequentially manufactured.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENRS Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description and drawings, the same reference numerals are used to designate the same or similar components, and so repetition of the description on the same or similar components will be omitted.
A device for sensing the froth in soybean milk, watery bear, curd, and bean curd manufacturing apparatus for domestic
use and generating a blocking signal indicative of the sensed result will ce explained herein referring to FIG. 2 below. FIG. 2 is a circuitry diagram which shows the device for sensing and blocking froth in a hcme machine for manufacturing soybean milk, watery bean curd, and bean curd according to an embodiment of the present invention.
As shown in FIG. 2, the device includes a ground electrode El, a signal electrode E2, a resistor R28, a switching transistor Q10, a controller I.Cl, a resistor R8, a switching transistor Q4, a heater coil Ra and a switching transistor 06. The ground electrode El and the signal electrode E2 are connected to two selected in components installed in a body 1, respectively. The resistor R28 is connected to the signal electrode E2. The switching transistor Q10 is connected to the resistor R28. The controller I.Cl is connected to the switching transistor Q10. The controller I.Cl outputs a control signal for blocking froth when the froth is sensed. The resistor R8 is connected to the controller I.Cl. The switching transistor Q4 is connected to the resistor R8. The -heater relay coil Ra is connected to the switching transistor Q4 • The switching transistor Q6 is connected to the switching transistor 0.4 .
Hereinafter, an operation of the device for sensing and blocking froth in a hone machine tot manufacturing soybean
7

milk, watery bean curd, and bean curd according the present invention will be described.
When a user puts beans and water into the interior of the body 1 and inputs a power to a controller I.Cl, the controller I. Cl operates the driving motor 2. Then the driving motor 2 controls the knife edge 5 to pulverize the beans and water. The controller operates the heater 6 and the temperature sensor 7 to perform a series of processes, in which the beans and water are heated at a predetermined temperature, so that the soybean milks, watery bean curds, and bean curds are sequentially manufactured.
When the heater 6 is operated during manufacturing process of soybean miIks, watery bean curds, and bean curds, the controller I.Cl judges whether or not froth is generated in the interior of the body 1 in response to a signal inputted from the signal electrode E2 through the resistor R28 and the switching transistor Q10.
When the froth is present in the interior of the body 1, the ground electrode El and the signal electrode E2 are electrically connected to each other by means of the froth. Accordingly, a ground electric potential is applied to a base of the switching transistor Q10 to turn off the switching transistor Q10. When the froth is absent in the interior of the body 1, the ground electrode El and the signal electrode E2 are electrically disconnected from each other. Accordingly, a
8

non-ground electric potential is applied to the base of the switching transistor QiO to turn on the switching transistor Q10.
The around electrode El and the signal electrode E2 are used in connection to two selected components installed in the body, respectively. FIG. 3 shows device having the ground electrode El and the signal electrode E2 which are electrically connected to two selected components in the body 1. As shown in FIG. 3, the ground electrode El and the signal electrode E2 which are electrically connected to a heater 6 and a temperature sensor 7 respectively.
When the froth is present between the ground electrode El and the signal electrode E2, the switching transistor QIO is turned off. Accordingly, the controller I.Cl drives the switching transistor Q4 connected to an output terminal of the controller I.Cl. The switching transistor Q4 drives and does
inot operate the heater relay coil Ra driving for the heaterE6 to remove the occurrence of the froth.
As mentioned above, the present invention can provides an
apparatus for sensing and blocking froth is present in a machine for manufacturing soybean milk, a watery bean curd, and a bean curd, which allows a heater not to be operated only when the home manufacturing machine contains froth, thereby preventing the machine from getting damaged. The present invention can be applied and used in an apparatus field which
9

manufactures soybean milks, watery bean curds, and bean curds, without departing from the scope and spirit of the invention.
Although a preferred embodiment of the present invention has been described for illustrative purposes, those skilled in 5 the art will appreciate that various modifications, additions and substitutions, are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

I CLAIM:
1. A device for sensing and blocking froth in an apparatus for manufacturing soybean milk, watery bean curd, and bean curd, the apparatus being in domestic use, the apparatus including a plurality of components installed in a body, the device comprising:
a ground electrode and a signal electrode electrically connected to two selected in the plurality of the components, respectively;
a first resistor connected to the signal electrode;
a first switching transistor connected to the first resistor;
a controller connected to the first switching transistor for outputting a control signal for blocking a froth when the froth is sensed;
a second resistor connected to the controller;
a second switching transistor connected to the second resistor;
a heater coil connected to the second switching transistor; and
a third switching transistor connected to the second switching transistor.
2. The device as claimed in claim 1, wherein the ground
11

electrode and the signal electrode are electrically connected to a heater and a temperature sensor, respectively.

13
3. A device for sensing and blocking froth in an apparatus for manufacturing soybean milk, watery bean curd and bean curd, substantially as herein described, particularly with reference to the accompanying drawings.
Disclosed is a device for sensing and blocking froth in a home machine for manufacturing soybean milk, watery bcan curd, and bean curd, which allows a heater not to be operated only when the home manufacturing machine contains froth, so as to remove froth, thereby preventing the machine from getting damaged. As shown in Fig2, the device includes a ground electrode El and a signal electrode E2; a first resistor R28 connected to the signal electrode; a first switching transistor Q10 connected to the first resistor; a controller IC1 connected to the first switching transistor for outputting a control signal for blocking a froth when the froth is sensed; a second resistor R8 connected to the controller; a second switching transistor Q4 connected to the second resistor; a heater relay coil Ra connected to the second switching transistor; and a third switching transistor Q6 connected to the second switching transistor.

Documents:

00429-cal-2002-abstract.pdf

00429-cal-2002-claims.pdf

00429-cal-2002-correspondence.pdf

00429-cal-2002-description(complete).pdf

00429-cal-2002-drawings.pdf

00429-cal-2002-form-1.pdf

00429-cal-2002-form-18.pdf

00429-cal-2002-form-2.pdf

00429-cal-2002-form-3.pdf

00429-cal-2002-g.p.a.pdf

00429-cal-2002-priority document others.pdf

00429-cal-2002-priority document.pdf

429-CAL-2002-CORRESPONDENCE 1.1.pdf

429-CAL-2002-FORM-27.pdf

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Patent Number

200925

Indian Patent Application Number

429/CAL/2002

PG Journal Number

N/A

Publication Date

19-Jan-2007

Grant Date

19-Jan-2007

Date of Filing

19-Jul-2002

Name of Patentee

KIM HONG-BAE

Applicant Address

5-7 HYUNCHUN -DONG, DUCKYANG-KU ,KOYANG SHI KYUNGGI-DO ,

Inventors:

#	Inventor's Name	Inventor's Address
1	KIM HONG-BAE	5-7 HYUNCHUN -DONG, DUCKYANG-KU ,KOYANG SHI KYUNGGI-DO ,

PCT International Classification Number

G01F 23/24,

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	2002-2978	2002-01-30	Republic of Korea