Title of Invention

HORIZONTAL SCROLL COMPRESSOR

Abstract A vertical compressor is converted to a horizontal compressor by laying the vertical compressor on its side and locating it within the standard shell of a larger vertical compressor. The end caps and partition of the smaller compressor are removed while the end caps and the partition of the larger compressor are added. A lubricant pump pumps lubricant from the sump defined between the two shells to all areas of the compressor requiring lubrication.
Full Text FIELD OF THE INVENTION
The present invention relates to scroll machines. More particularly, the present invention
relates to scroll compressors which are positioned horizontally and utilize an existing
compressor shell to encase a second existing compressor shell within which the scroll
compressor is located.
BACKGROUND AND SUMMARY OF THE INVENTION
Scroll type machines are becoming more and more popular for use as compressors in both
refrigeration as well as air conditioning applications due primarily to their capability for
extremely efficient operation. Generally, these machines incorporate a pair of intermeshed
spiral wraps one of which is caused to orbit relative to the other so as to define one or more
moving chambers which progressively decrease in size as they travel from an outer suction
port toward a center discharge port. An electric motor is provided which operates to drive the
orbiting scroll member via a suitable drive shaft affixed to the motor rotor. In a hermetic
compressor, the bottom of the hermetic shell normally contains an oil sump for lubricating
and cooling purposes.
Generally, the motor includes a stator which is secured to the shell of the compressor. The
motor rotor rotates within the stator to impart rotation to a crankshaft which is normally press
fit within the motor rotor. The crankshaft is rotationally supported by a pair of bearings which
are supported by a main bearing housing and a secondary bearing housing. The crankshaft
includes an eccentric crank pin which extends into a bore defined in a hub of the orbiting
scroll. Disposed between the hub of the crank pin and the inner surface of the bore is a drive
bushing which rides against a bearing that is press fit within the bore of the hub.
The design for scroll compressors position the central axis of the crankshaft in a vertical or
horizontal position. One difference between the vertical and horizontal scroll compressor
designs is the lubrication sump and the delivery systems which deliver the lubricant to the
various components of the compressor which require lubrication. In a typical vertically
positioned compressor, lubricant is stored in the lower portion of the shell with the lower end
of the crankshaft being submerged within the sump. The crankshaft has a relatively large
diameter centrally located bore which communicates with a radially outwardly inclined

smaller diameter bore which extends to the top of the crankshaft. The larger diameter bore
acts as a pump to pump the lubricating fluid up the crankshaft into the smaller diameter bore
and ultimately to all of the various portions of the compressor which require lubrication.
When the compressor is positioned horizontally, it is not practical to immerse the end of the
crankshaft within the lubricant since this would require filling over one-half of the shell with
lubricant. The present invention provides the art with a horizontal compressor which includes
a typical vertical compressor which has been positioned horizontally. The horizontally
positioned vertical compressor is disposed within the shell of a larger vertical compressor to
provide the necessary lubrication sump for the horizontal compressor.
Other advantages and objects of the present invention will become apparent to those skilled
in the art from the subsequent detailed description, appended claims and drawings.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
In the drawings which illustrate the best mode presently contemplated for carrying out the
present invention:
Figure 1 is a side view of a horizontal scroll type refrigeration compressor in accordance with
the present invention;
Figure 2 is an end view of the horizontal scroll type refrigeration compressor shown in Figure
1;
Figure 3 is a vertical cross-sectional view through the center of the scroll type refrigeration
compressor shown in Figure 1;
Figure 4 is an end view of the scroll type refrigeration compressor shown in Figure 1 with the
cap and partition removed; and

Figure 5 is an end view of the scroll type refrigeration compressor at the end opposite to the
one shown in Figure with the end cap and the oil pump removed.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawings in which like reference numerals designate like or
corresponding parts throughout the several views, there is shown in Figures 1-5 a horizontal-
type refrigeration scroll compressor in accordance with the present invention which is
designated generally by the reference numeral 10. Compressor 10 comprises an inner
generally cylindrical shell 12 and an outer generally cylindrical hermetic shell 14. Inner
generally cylindrical shell 12 is preferably a standard compressor shell from a currently
existing vertical compressor. Likewise, outer generally cylindrical hermetic shell 14 is
preferably a standard compressor shell from a currently existing vertical compressor which is
larger than the compressor from shell 12. By utilizing two existing compressor shells, one
large one small, the costs associated with producing horizontal compressor 10 can be reduced
significantly.
Generally cylindrical hermetic outer shell 14 has welded at one end thereof and end cap 16
and at the opposite end an end cap 18. A plurality of feet 20 are secured to shell 14 to
facilitate this positioning of compressor 10 within a refrigeration system. Cap 16 is provided
with a refrigerant discharge fitting 22 which may have the usual discharge valve therein.
Other major elements affixed to shell 14 include a transversely extending partition 24 which
is welded about its periphery at the same point that end cap 16 is welded to shell 14, a suction
fitting 56, an oil drain fitting 28, a terminal block 30, a liquid injection fitting 32 and a sight
glass 34. Inner shell 12 is disposed within outer shell 14 and it is centrally positioned within
outer shell 14 by a plurality of spacers 26.
Major elements which are affixed to scroll 12 include a main bearing housing 36 which is
suitably secured to shell 12 by a plurality of radially outwardly extending legs and a
secondary bearing housing 38 also having a plurality of radially outwardly extending legs
each of which is also suitably secured to shell 12. A motor stator 40 which is generally square
or hexagonal in cross-section but with the corners rounded off is press fitted into shell 12.
The flats between the rounded corners on stator 40 provide passageways between stator 40
and shell 12, which facilitate the flow of lubricant and refrigerant gas within shell 12.

A drive shaft or crankshaft 42 having an eccentric crank pin 44 at one end thereof is rotatably
journaled in a bearing 46 in main bearing housing 40 and a second bearing 48 in secondary
bearing housing 38. Crankshaft 42 has at the opposite end a relatively large diameter
concentric bore 50 which communicates with a radially outwardly inclined smaller diameter
bore 52 extending through crankshaft 42. Secured to the outer side of secondary bearing
housing 38 is a lubricant pumping system 60 which is powered by crankshaft 42. Pumping
system 60 includes an inlet housing assembly 62, an inlet tube 64 and a lubricant pump 66
driven by crankshaft 42. Lubricant pump 66 is secured to inlet housing assembly 62 which is
in turn secured to secondary bearing housing 38. Inlet tube 64 extends from inlet housing
assembly 62 to a power position between shells 12 and 14. The lower position between shells
12 and 14 define a sump 68 within which lubricant is accumulated. Pump 66 draws lubricant
from sump 68 through tube 64 and housing assembly 62 and pumps this lubricant into bore
50 and into bore 52 and ultimately to all of the various portions of compressor 10 which
require lubrication.
Crankshaft 42 is rotatively driven by an electric motor including stator 40, windings 70
passing therethrough and a rotor 72 press fitted on crankshaft 42 and having first and second
counterweights 74 and 76, respectively.
The outer surface of main bearing housing 36 is provided with a flat thrust bearing surface 78
against which is disposed an orbiting scroll member 80 having the usual spiral vane or wrap
82 extending outward from an end plate 84. Projecting outwardly from the opposite surface
of end plate 84 of orbiting scroll member 80 is a cylindrical hub 86 having a journal bearing
88 therein and in which is rotatively disposed a drive bushing 90 having an inner bore 92 in
which crank pin 44 is drivingly disposed. Crank pin 44 has a flat on one surface which
drivingly engages a flat surface (not shown) formed in a portion of bore 92 to provide a
radially compliant driving arrangement, such as shown in assignee's U.S. Letters Patent
4,877,382, the disclosure of which is hereby incorporated herein by reference. An Oldham
coupling 94 is also provided positioned between orbiting scroll member 56 and bearing
housing 24 and keyed to orbiting scroll member 80 and a non-orbiting scroll member 96 to
prevent rotational movement of orbiting scroll member 80. Oldham coupling 94 is preferably

of the type disclosed in assignee's co-pending U.S. Letters Patent 5,320,506, the disclosure of
which is hereby incorporated herein by reference.
Non-orbiting scroll member 96 is also provided having a wrap 98 extending outwardly from
an end plate 100 which is positioned in meshing engagement with wrap 82 of orbiting scroll
member 80. Non-orbiting scroll member 96 has a centrally disposed discharge passage 102
which communicates with an upwardly open recess 104 which in turn is in fluid
communication with a discharge muffler chamber 106 defined by cap 16 and partition 24. An
annular recess 108 is also formed in non-orbiting scroll member 96 within which is disposed
a seal assembly 110. Recesses 104 and 108 and seal assembly 110 cooperate to define axial
pressure biasing chambers which receive pressurized fluid being compressed by wraps 82 and
98 so as to exert an axial biasing force on non-orbiting scroll member 96 to thereby urge the
tips of respective wraps 82, 98 into sealing engagement with the opposed end plate surfaces
of end plates 100 and 84, respectively. Seal assembly 110 is preferably of the type described
in greater detail in U.S. Patent No. 5,156,539, the disclosure of which is hereby incorporated
herein by reference. Non-orbiting scroll member 96 is designed to be mounted to bearing
housing 24 in a suitable manner such as disclosed in the aforementioned U.S. Patent No.
4,877,382 or U.S. Patent No. 5,102,316, the disclosure of which is hereby incorporated herein
by reference.
Thus, horizontal compressor 10 of the present invention provides the art with an effective
cost reducing method of converting a typical vertically oriented compressor into a horizontal
compressor. The utilization of two shells from existing vertical compressors enables a low
cost conversion to the horizontal system. The existing smaller shell with its compressor
mounted within it is located within the shell of a large compressor. The two shells from a
lubricant sump from which lubricant is pumped by a pumping system powered by the rotating
crankshaft.
While the above detailed description describes the preferred embodiment of the present
invention, it should be understood that the present invention is susceptible to modification,
variation and alteration without deviating from the scope and fair meaning of the subjoined
claims.

WE CLAIM,
1. A horizontal scroll machine comprising:
a first shell;
a first scroll member disposed within said first shell, said first scroll member having a base
plate and a first spiral wrap extending from said first base plate;
a second scroll member disposed within said first shell, said second scroll member having a
second base plate and a second spiral wrap extending from said second base plate, said
second spiral wrap being intermeshed with said first spiral wrap;
a drive member for causing said scroll members to orbit relative to one another whereby said
spiral wraps create pockets of progressively changing volume between a suction pressure
zone and a discharge pressure zone;
a second shell defining an internal chamber, said first shell being disposed entirely within
said second shell, said second shell defining a lubricant sump; and
a partition secured to said second shell, said partition separating said internal chamber into
said suction pressure zone and said discharge pressure zone.
2. The scroll machine as claimed in claim 1, further comprising a lubricant pump driven by
said drive member, said lubricant pump being operable to pump lubricant from said sump.
3. The scroll machine as claimed in claim 1, further comprising a main bearing housing
secured to said first shell, said main bearing housing rotatably supporting said drive member.
4. The scroll machine as claimed in claim 3, further comprising a secondary bearing housing
secured to said first shell, said secondary bearing housing rotatably supporting said drive
member.

5. The scroll machine as claimed in claim 4, further comprising a lubricant pump secured to
said secondary bearing housing, said lubricant pump being operable to pump lubricant from
said sump.
6. A scroll machine comprising:
a first shell defining a chamber;
a partition dividing said chamber into a suction pressure zone and a discharge pressure zone;
a second shell disposed within said suction pressure zone;
a first scroll member disposed within said second shell, said first scroll member having a
base plate and a first spiral wrap extending from said first base plate;
a second scroll member disposed within said second shell, said second scroll member having
a second base plate and a second spiral wrap extending from said second base plate, said
second spiral wrap being intermeshed with said first spiral wrap; and
a drive member disposed within said second shell for causing said scroll members to orbit
relative to one another whereby said spiral wraps create pockets of progressively changing
volume between said suction pressure zone and said discharge pressure zone.
7. The scroll machine as claimed in claim 6, wherein a lubricant sump is defined between
said first and second shells and said scroll machine further comprises a lubricant pump
operable to pump lubricant from said sump.
8. The scroll machine as claimed in claim 5 or claim 6, wherein said lubricant pump is driven
by said drive member.
9. The scroll machine as claimed in any one of the preceding claims, further comprising at
least one spacer disposed between said first and second shells.

10. The scroll machine as claimed in any one of the preceding claims, wherein said first and
second shells are cylindrical, said first and second shells being disposed co-axially.
11. The scroll machine as claimed in any one of the preceding claims, wherein said first and
second shells each define a horizontal axis, said axes being parallel.
12. The scroll machine as claimed in claim 11, wherein said axes are colinear.
13. The scroll machine as claimed in any one of the preceding claims, further comprising a
suction inlet extending through said second shell.

14. The scroll machine as claimed in claim 13, further comprising a discharge outlet
extending through said second shell, said partition being disposed between said discharge
outlet and said suction inlet.
15. The scroll machine as claimed in any one of claims 1 to 13, further comprising a
discharge outlet extending through said second shell.
16. The scroll machine as claimed in any one of the preceding claims, further comprising a
floating seal disposed between said partition and one of said scroll members.


A vertical compressor is converted to a horizontal compressor by laying the vertical
compressor on its side and locating it within the standard shell of a larger vertical
compressor. The end caps and partition of the smaller compressor are removed while the
end caps and the partition of the larger compressor are added. A lubricant pump pumps
lubricant from the sump defined between the two shells to all areas of the compressor
requiring lubrication.

Documents:

26-CAL-2001-ABSTRACT-1.1.pdf

26-cal-2001-abstract.pdf

26-CAL-2001-AMANDED CLAIMS.pdf

26-CAL-2001-ASSIGNMENT.1.3.pdf

26-cal-2001-assignment.pdf

26-cal-2001-claims.pdf

26-CAL-2001-CORRESPONDENCE 1.3.pdf

26-CAL-2001-CORRESPONDENCE-1.1.pdf

26-CAL-2001-CORRESPONDENCE-1.2.pdf

26-CAL-2001-CORRESPONDENCE.1.3.pdf

26-cal-2001-correspondence.pdf

26-CAL-2001-DESCRIPTION (COMPLETE)-1.1.pdf

26-cal-2001-description (complete).pdf

26-CAL-2001-DRAWINGS-1.1.pdf

26-cal-2001-drawings.pdf

26-cal-2001-examination report-1.1.pdf

26-CAL-2001-EXAMINATION REPORT.1.3.pdf

26-cal-2001-examination report.pdf

26-CAL-2001-FORM 1-1.1.pdf

26-cal-2001-form 1.pdf

26-CAL-2001-FORM 13-1.1.pdf

26-cal-2001-form 13-1.2.pdf

26-CAL-2001-FORM 13.1.3.pdf

26-CAL-2001-FORM 13.pdf

26-cal-2001-form 18-1.1.pdf

26-CAL-2001-FORM 18.1.3.pdf

26-cal-2001-form 18.pdf

26-CAL-2001-FORM 2-1.1.pdf

26-cal-2001-form 2.pdf

26-cal-2001-form 26-1.1.pdf

26-CAL-2001-FORM 26.1.3.pdf

26-cal-2001-form 26.pdf

26-CAL-2001-FORM 3-1.1.pdf

26-cal-2001-form 3-1.2.pdf

26-CAL-2001-FORM 3.1.3.pdf

26-cal-2001-form 3.1.pdf

26-cal-2001-form 3.pdf

26-CAL-2001-FORM 5-1.1.pdf

26-cal-2001-form 5-1.2.pdf

26-CAL-2001-FORM 5.1.3.pdf

26-cal-2001-form 5.pdf

26-cal-2001-form 6-1.1.pdf

26-CAL-2001-FORM 6.1.3.pdf

26-cal-2001-form 6.pdf

26-CAL-2001-FORM-27.pdf

26-CAL-2001-GPA.1.3.pdf

26-cal-2001-gpa.pdf

26-cal-2001-granted-abstract.pdf

26-cal-2001-granted-claims.pdf

26-cal-2001-granted-description (complete).pdf

26-cal-2001-granted-drawings.pdf

26-cal-2001-granted-form 1.pdf

26-cal-2001-granted-form 2.pdf

26-CAL-2001-GRANTED-LETTER PATENT.pdf

26-cal-2001-granted-specification.pdf

26-CAL-2001-OTHERS 1.1.pdf

26-CAL-2001-OTHERS-1.1.pdf

26-CAL-2001-OTHERS.1.3.pdf

26-cal-2001-others.pdf

26-CAL-2001-PA.pdf

26-cal-2001-reply to examination report-1.1.pdf

26-CAL-2001-REPLY TO EXAMINATION REPORT.1.3.pdf

26-cal-2001-reply to examination report.pdf

26-cal-2001-specification.pdf

26-CAL-2001-TRANSLATED COPY OF PRIORITY DOCUMENT.1.3.pdf

26-cal-2001-translated copy of priority document.pdf


Patent Number 247918
Indian Patent Application Number 26/CAL/2001
PG Journal Number 23/2011
Publication Date 10-Jun-2011
Grant Date 03-Jun-2011
Date of Filing 17-Jan-2001
Name of Patentee EMERSION CLIMATE TECHNOLOGIES, INC.
Applicant Address 1675 W. CAMPBELL ROAD, SIDNEY HO
Inventors:
# Inventor's Name Inventor's Address
1 RAJENDRAN, NATARAJAN 1630 SEA BREEZE COURT NO. 1C, DAYTON, OHIO 45458
2 PRENGER, JASON MICHAEL 17860 STATE ROUTE 274 JACKSON CENTER, OHIO 45334
3 NOFFSINGER, DOD ALAN 301 WEST NORTH STREET ANNA OHIO 45302
4 CABE DEL HORACE 616 SOUTH OHIO AVENUE, SIDNEY OHIO 45365
PCT International Classification Number F04C 18/02
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 09/496,937 2000-02-02 U.S.A.