US1797287A - Refrigerating machine - Google Patents

Refrigerating machine Download PDF

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Publication number
US1797287A
US1797287A US509672A US50967221A US1797287A US 1797287 A US1797287 A US 1797287A US 509672 A US509672 A US 509672A US 50967221 A US50967221 A US 50967221A US 1797287 A US1797287 A US 1797287A
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United States
Prior art keywords
motor
compressor
chamber
casing
refrigerant
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Expired - Lifetime
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US509672A
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English (en)
Inventor
Andrew A Kucher
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Westinghouse Electric Corp
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Westinghouse Electric Corp
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Priority to FR557695D priority Critical patent/FR557695A/fr
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US509672A priority patent/US1797287A/en
Priority to GB28107/22A priority patent/GB187604A/en
Application granted granted Critical
Publication of US1797287A publication Critical patent/US1797287A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/071—Compressor mounted in a housing in which a condenser is integrated

Definitions

  • One object of my invention is to provide a device of the above-indicated character that shall have allof the component .parts so constructed and related as to reduce the number and complicity thereof as much as possible,
  • Another object of my invention is to provide a -refrigerating machine that shall comprise a compressor of such character and relation to the other parts of the machine as to ensure effective' and economical operation thereof.
  • Another object of my invention is to provide a novel lubricating system for a refrigerating machine that shall materially assist in the upkeep and running qualities thereof.
  • a further object of my invention is to provide a refrigerating machine that shall be quiet in operation.
  • Quiet operation is mainly attained by the v particular construction and disposition of a motor and a compressor, which construction also renders the machine more effective in cating systemv in which the refrigerating fluid and a lubricating fluid circulate through parts of the machine while intermixed, a separator for said fluids, a rotating fluid deflector for the motor and means for evacuating the motor casing, are also features which severally and collectivelyV assist in accomplishing the objects and purposes of the invention.
  • Fig. 1 of the accompanying drawings is 'a side view, partially in section and partially in elevation,- of a refrigerating machine embodying my invention.
  • Fig. 2 is a detail View, partially in section and partially in elevation, of a valve employed in my invention.
  • Fig. 5 is a side view of the members show in Fig. 4. Y
  • Fig. 9 is a view taken along the line' IX-IX in Fig. 8.
  • the machine comprises, in general, abase member or supporting plate 1 and a cover member or shell 2. providing a condensing chamber 3, an expansion device 5, a compressor 6, an actuating electric motor 7 Afor the compressor, a check valve 8 for the compressor,.an ex ansion valve 9, a cooling coil or tube 10, a uid separator (Figs. 4 and 5), and a float member 12 for controlling the expansion valve 9.
  • the base plate 1 that is pre erably of discoidalform and constructed of any suitable material, such as cast iron or aluminum,.is provided, on its u per side, with an annular flan e 14 around w 'ch a-casing 15 of the motor is adapted to it.
  • the flange 14 and the motor casing 15 may be concentrically disposed about the longitudinal axis of the base plate 1 or be 'eccentrically disposed thereon, as shown.
  • An annular groove 16 of V-shape ⁇ in crosssectional areaf and disposed concentrically with the longitudinal axis of the motor 7 in the base plate 1 and a similar groove 17 disposed concentrlcally with the longitudinal axis of the base plate in the upper surface thereof, are adapted to receive packin rings 18 and 19, respectively, -that are pre erably constructed of soft rubber and initially of circular cross-sectional area.
  • the packing ring 18 is compressed to conform with the, roove 16 by means of screws 21 that extend t rough a flange 22 on the motor casing 15 and :into holes 23 in the base plate to form a Huid-tight connection between the base plate and the motor casing 15.
  • the packing ring'19 is similarly compressed, by means of screws or bolts 25 that extend through a lian e 26 on the cover shell 2 and into openings 2 in the base plate 1, to'form a fiuidroof connection between the base plate and t e cover shell 2.
  • Lugs 29 project from the outer periphery of the base plate 1 and are provided with openings 30 for the reception of screws or bolts 31 for mounting the machine on a refrigerator (not shown), or in any other desired position.
  • the base plate 1 is furtherV provided with substantially radial bores or openings 32 and 33 that are disposed intermediate the upper and lower surfaces of the plate and are open only to the upper surface of the plate, at their inner ends, by means of taps 34 into which the ends of the'cooling tube 10 are mounted (not shown).
  • the outer end of one of the openings 32 and 33 is adapted to receive a pipe connection from an external source of water, or other cooling medium, and the outer end tral opening in its transverse wall.
  • An opening 36 extending between the upper and lower faces of the base plate 1, is tapped at its upper end to receive the lower end 37 of the expansion valve 9 and, at its lower end, to receive, by means of a union 40, the intake end 38 of a coiled tube 39 constituting a part of the expansion device 5.
  • An opening 41 is also provided in the base plate to connect the intake port of the compressor 6, by means of a brass or copper tube 42 and unions 28 and 57, to a brass or copper exhaust or suction terminal tube 43 of the expansion device 5.
  • a radial opening 45 that is provided with a plug 46 at its outer end, intersects the open ing 41 to communicate with an opening or chamber 47 and, through a check valve 48 at the upper end of the latter, to communicate with the interior of the motor casing 15.
  • the check valve 48 comprises a preferably relatively thin pressed-metal cap 35 press fitted, or otherwise secured, in the upper end of the chamber 47 and provided with a cen- A ball 44 is no'rmally held in position against the transverse Wall, to close the opening 40, by a compression sprin 51 that extends between the ball 44 and the ottom of the chamber 47.
  • Packing members 56 are disposed in the plugs 54, around the rods 53 between the bushings 55.
  • a rotatable shaft 62 preferably constructed of cold rolled or tool steel, on which a rotatable member 63 (Figs. 7, 8 and 9) lof the compressor 6 and the armature 64 of the motor 7 is mounted, has a lower end portion 65, of reduced diameter, that is ositioned in an opening 66 in aboss 67 on t e upper surface ofthe base plate 1.
  • a thrust bearing 69 for the shaft 62 comprises a washer or collar 70 secured to the shaft, as by screw-threading, a loose or floating collar 71 disposed between the collar and the boss 67 and a lubricant cup 72 adapted to maintain the lubricant' leads 50.
  • An annular laminated field magnet structure 74, supporting a field winding 75, is
  • the field windin 75 is impregnated or embedded in a body o insulating material 76, such as' pressor 6, to which the latter is secured, as by v screws 79, and a downwardly projecting bearing portion 81 for the shaft 62.
  • a packing ring 82 ⁇ is held in position around the* ⁇ shaft 62 by means of a ring 83 and screws 84 that extend through the rings 83 Ainto the lower portion of the bearing portion 81.
  • a member 85, of substantially cup-shape, is
  • t-he compressor 6 comprises an outer cylindrical member or casing 87, o f any sultable materlal such as cast iron, brass or aluminum,
  • a second cylindrical member or'rotor shell 97 preferably constructed of tool steel and closely fitting the bore ofthe casing 87, is provided with oppositely-disposed longitudinally-offset ports 99 and 100 that, respectively, communicate with the grooves 94 and 95 at their outer ends andVwi'th the intedriorof the'rotor shell 97 at their inner ends.
  • the rotor or drum ⁇ 63 preferably of steel, is concentrically mounted, as by a key103, on the shaft 62 and, with the latter,I is eccentrically related to the cylinder member 97.
  • Radial slots 105i'n the rotor- 102 are, adapted to receive radially slidable'partition or blade members 107 and 108, preferably r'ofi'luron through openings 115, at the bottoms of the y slot-s 105, and through openings 116 in the shaft 62, into proximate relation to the inner c edges of the blades 107 and 108.
  • the port 100 of the chamber B communicates' with the groove 95 and permits the gases to be forced, during the period in which its volumetric capacity is decreasing, from the chamber B, into the outlet port 91.
  • the twoy chambers A and B operate in opposite phases, so that when cham-A ber A is receiving gases, through the port 88, the chamber B is discharging gases through the port 91, and vice versa.
  • the check valve 8, Figs. 1 and 2 com- 'prises a preferably cast brass member of' substantially T-shape, that is drilled to tubular form, having a screw-threaded central leg or portion 124 for mounting in the eX- haust port portion 91 and a cross or T-head portion 125 having ground valve seat por.- tions 126- of substantially frustro-conical shape.
  • the condensing chamber 3 contains a quantity of lubricating fiuid132, such as glyc! crine, and, above the latter, a quantity of refri rating iiuid 133, such as ethyl chloride, whlch, by reason of the respective specific gravities thereof, assume the levels indicated in Figs. 1 and 5.
  • the float member 12 comprises a tubular, preferably brass, member 135 of substantially ring-shape that is so formed. that it may conveniently surround the motor casing 7kto economize space and to provide sufficient buoyancy or .lifting power to actuate the expahsion'valve 9.
  • the float member 135 is connected to the valve 9 by a referably sheet" brass member 137 that is 'Bent to constitute a lever arm having one end l 138 secured in position in a sealed slot 139 in the float tube 135.
  • the member 137 are adapted to receive a pin 141 that is supported in an arm 142 integrally formed on the valve 9 and a pin 144 that ⁇ passes through a valve stem 145 in the valve 9.
  • the valvey stem operates in a chamber or bore 146 of the valve to open and close a passage 147 therein,l in accordance with the position of the float member 135.
  • the vfluid-separator device 11, Figs. 4 and 5, comprises a preferably brass or copper tube 150 bent into vertical convolutions and into substantially arcuate form, as viewed from above.
  • the tube 150 has an intake or overflow end151, open at the top, and an end 152 fitted in and secured, as by a solder 'oint, to a tubular projection 153 that may e integral with the expansion valve 9.
  • the upper bent portions 155 of the convolute tube 150 are preferably disposed slightly above the refrigerant level and are provided with openings 156 'to equalize the pressures inside and outside of the tube.
  • Vertically depending tubes- 157 communicate', at their upper ends, with the lower bent portions 158 of the tube 150 and, at their lower ends, with a tube- 159.
  • the lower bent portions 158 of the tube 150 are disposed above the lubricantlevel.
  • the tube 159 connects with the first lower bent portion 158, adjacent to the Valve 9, ata position slightly below the lubricant level and is inclined downwardly from that position to an open latter has a bent pdrtion 169 from which the tube 168 extends tothe lower end 170 thereof below the lubricant level.
  • a space 171 between the upper end of the shaft 62 and the opening 165 serves as a lvacuum sides or chambers.
  • the members 176 and 177 are held together and a packing ring or gas-11 ket 179 is compressed between the flanges 178 by bolts 180 which extendl through the flanges 17 8 and are provided with nuts 181.
  • the upper member 176 ofthe dome 17 5 is provided with an interiorly-threaded hollow. boss or collarA 183, into which one end of a member 184 of substantially T-shape is fitted.
  • the member 184 has a bore 185 and a lateral tubular leg or portion 186 into which the tube 43 is fitted to provide communication beta ⁇ tween Athe bulb 175 and the intake port 88 of the compressor 6.
  • the member 184 may be provided with a solid exteriorly-threaded upper end portion 188 for dispositionin a cooperativel -threaded opening 189 in the under side o the base plate ⁇ 1 to support the expansion device 5.
  • the tube 39 of which the upper end 38 communicates with the expansion valve 9 through the opening 36 in the base platel, is hellc'ally coiled around the dome 17 5 and is connected, at its other end 191, to a hollow boss 192 at the lower end of the dome 17 5.
  • the refrigerating fluid is drawn in gaseous form from the bulb 17 5, through the member 184, the tube 143, the opening 41 in the 'base plate 1, the tubeV 42 and the intakeport 88 of the compressor to one of the chambers A and B in the latter and is compressed, as hereinbefore described.
  • the check valve- 8 and into the condensing chamber 3 Being forced through the check valve- 8 and into the condensing chamber 3, the latter is subjected to a relatively high pressure which is transmitted to the liquid refrigerant 133 and to the liquid lubricant 132 at the bottom of the chamber 3.
  • the refrigerating liquid carrying the particles of lubricant must pass through the separator 11 before being admitted to the valve 9. Entering the open end 151 ofthe necessary to sufficient-ly separate out the particles of lubricating iuid from the refrigerating fluid.
  • lubricating liquid is forced through the tube 168 to lubricate the compressor. Portions of the lubricant, thus forced to the compressor, are forced outwardly through the check valve 8 to be returned to the lnain body 135 of the lubricating material. Other portions of the lubricant, ⁇ that a-re conducted to the, compressor through the tube 168, pass into the bearing portion 81 at the upper end of the motor 7 and, fromthe bearing portion 81, through a passage 190'in the shaft 62, to the vlubricant cup 72 of thethrust bearing 69.
  • the passage 190 has a relatively short helical portion or groove 193 in the outer surface of the shaft above the packing ring 82.
  • the shaft is machined oill at a portion 194 to provide a diagonal shoulder 195 through which, and through the shaft 92 to a position below the packing ring 82, a
  • diagonal hole 196 is drilled.
  • the hole 196 communicates, at its lower end, with a side slot 197, similar to a key-way, that extends to the thrust bearing 69.
  • e arrangement serves to lubricate the bearings 81 and 69 and to conduct the lubricant from a position above to a position below the packing ring While the packing rin 82 is provided to retard,l.or to prevent as far as possible, the lubricating and refrigerating liquids passing into the motor casing 15, should any appreciable amount of the liquids so pass into the motor casing, it will descend to the deector member 85.
  • the rotation of the delector vmember 85 causes the liquids therein to be thrown against the inner walls of the mot-or casing 15, above the field and armature structures thereof, from which position the liquids pass between the ribs 77 and the outer perimeter of the field magnet structure 74 to the bottom of the motor casing, which is formed by a portion of the base plate 1. Since this portion of the motor casing communicates, through the check ⁇ valve 48 and the passages 47 and 45 in the base plate 1,
  • this fluid joins the other fluids to again pass through one of the fluid-How cycles, as described.
  • the refrigerant in the expansion device 5 continues to form gas which ultimately destroysv the vacuum in the expansion device and bu-ilds up a slight'pressure. This pressure is prevented from forcing the refrigerant into the motor casing 15 by the check valve 48, the ball 44 of which is forced against the opening 40.
  • the check valve A48 thus readily permits the egress of iiuids from the mo'- tor casing, during the vacuum action, but Y prevents the assagle of liuids into the motor casing theret roug
  • the operation of the device is preferably started and stopped automatically, depend- ⁇ therein contained, and the term ing' upon the temperature of thel medium which it is desired to cool, by any suitable means (not shown), forming no part of this invention.
  • another form of the separator 11 is adapted for separating a lubricant that is of less specific v gravity than the refrigerating medium, by having its open or intake end 151 at a lower portion thereof rather than at an upper portion, as in the forms.v
  • the tube 159 instead of extendin from the bottom of the tube 150, extends rom the upper side thereof to a position adjacent to the upper level of the lubricant.
  • the machine is compact, quiet and effective in operation, economical to manufacture and has many other features which render it par.
  • an expansion chamber in which a refrigerant iSv/vaporized, compressed and condensed in a repeating cycle, in combination, an expansion chamber, acondensing chamber, means for delivering condensed refrigerant from the condensing chamber to the expansion chamber, means including a compressor for withdrawing expanded refri erant from the expansion chamber and delivering it to the condensing chamber, and a motor for actuating said compressor, said motor being enclosed in a lower portion of one of the said chambers so that the heat ofthe motor is dissipated at least in part -through'the intermediary-of the condensed refrigerant.
  • a refrigerating machine in which a refrigerant iuid is vaporized, compressed and condensed, the combination with a gen- 'erally cylindrical chamber in which a change' of state of the refrigerant fluid is eiected,.of a rotary compressor, a rotary actuating motor for said compressor, said motor and said compressor being disposed in adjacent endto-end relation within said chamber, the axes of the compressor and motor extending in the irection of the axis of the cylindrical cham- 6.
  • a refri erating machine in which a refrigerant fluld is vaporized, compressed and condensed, in combination, an expansion chamber, a condensing chamber, means for delivering refrigerant from the condensing chamber to the expansion chamber, means includin a compressor for withdrawing expande refri erant from, the expansion chamber and elivering it to the condensing chamber, a motor for actuating said compix/essor disposed inside the condensing chamr, and a tube throu h which a cooling Huid is circulated in eiigective cooling prox: imity to a portion of the motor.
  • a refrigerating machine in which a refrigerant fluid is vaporized, compressed and condensed, the combination with a chamber in which a' change of state of the refrigerant fluid is effected, of a motor disposed Within said chamber and comprising a substantially fluid tight housing for the operatlng parts of said motor, and a fluid-proof protective covering of insulating material impervious to the refrigerant fluid for portions of the operating parts of said motor.
  • a refrigerating machine in which a refrigerant fluid is vaporized, compressed and condensed, the combination with a chamber in Whicha change of state of the refrigerant fluid is effected, of a motor Within the said Chamber having a substantially totally closed casing, and means constituting a fluid Withdrawal pathvextending between the inerior of the said casing and the said cham- 11.
  • a refrigerating machine in which a refrigerant fluid is vaporized, compressed and condensed,l the combination with ay chamber in which a change of state of the refrigerant fluid is effected, of a motor Within the said chamber having a substantially totally closed casing, and means operated by the motor for evacuating the casing of the motor.
  • a refrigerating machine in 'which a refrigerant fiuid is vaporized, compressed and condensed,in combination, afcondensing chamber, ,an expansionchamber, a kmotor and a compressor, Aa.fluid.tig ht casing enclosing the motor andcompressor, partition'means dividing the casing into a compartment for the Amotor and afcompartment for the compressor,and means connecting the compressor with the motor compartment and with the expansion chamber,v for .evacuating both the motor compartment and the expansion chamber.
  • a' refrigerant fluid in which a' refrigerant fluid 'is vaporized, compressed and condensed, the combination with a chamber in which a change of state of the refrigerant fluid is e1fected,of a compressor and actuating motor therefor enclosed Within said chamber, said motor comprising a substantially closed housing for the operating parts of the motor, drive shaft means for said compressor and motor, and a. deflector to protect the interior parts of the motor from contact with liquids entering into the said i housing about said shaft means.
  • a refrigerating machine in which a refrigerating Huid is vaporized, compressed and condensed, the combination with a condensing chamber and comprising a base member, of a compressor and actuating motor therefor disposed inside the condensing chamber, a tube for circulating cooling Huid in said chamber, and means constituting a fluid-conducting passage from the exterior of the chamber laterally through the base member to said tube.”
  • V19 In a refrigerating machine in which a refrigerant fluid is vaporized, compressed and condensed, a condensing chamber, an expansion chamber, a' compressor comprising a casing member, and a motor for actuating the compressor and -comfnising av casin.g,fthe casing of the motorconstituting a.-clos ure for the casing .of the compressor.
  • a condensing ⁇ chamber having a plurality of non-miscible liquids therein lying in substantially segregated layers, an expansion chamber, means constituting a communicating passage between one. of said liquid layers and ⁇ the expansion chamber, and means within the condensing chamber constituting a liquid Withdrawal path connected to said passage for separating out substantially all trace of other liquid, in order that said first -liquid only may pass into the expansion chamber.
  • a condensing chamber having a refrigerant liquid 'and a liquid lubricant of a different specific gravity therein, an expansion chamber, means constituting a communieating passage between the condensing and the expansion-chambers and disposed to withdraw the refrigerant liquid from the condensing. chamber into the expansion chamber, and means within the condensing chamber constituting a fluid withdrawal path connected to lsaid assage means for separating all trace of said lubricant, in order that sald refrigerant only may pass into the expansion chamber.
  • a refrigerating machine in which a re-V I frigerant fluid is vaporized, compressed and condensed including a condensing chamber comprising a casing member, a compressor comprising a casing member, and a motor for actuating the compressor and comprising a casing, the casing of the motor constituting a closure'for the casing of the compressor and the casing ofthe condensing chamberconstituting a closure for the casing of the motor.
  • a refrigerating machlne in which a refrigerant uid is vaporized, compressed and condensed, the combination with an evaporator, and a condenser, of a motor anda compressor, a Huid-tight casing enclosin the motor and compressor, a partition wal forming with the casing a compartment for the compressor and a compartment for the motor, and means for evacuating the motor compartment.
  • a refrigerating chamber in which a refrigerant fluid is vaporized, compressed and condensed, the combination with a chamber in which a change of state of the refrigerant fluid is effected, of a motor adjacent said chamber and having a casing, means for evacuating the casing of the motor and means for preventing the ingress of uid to the cas'- ing of the motor when the evacuating means is not in ⁇ operation.
  • a refrigerating apparatus in which a refrigerant is successively vaporized, compressed and condensed in a repeating cycle, the combination with a chamber in which a change of state of the refrigerant Huid is ⁇ ef .viding with the casing a compartment for the motor and a compartment for the compressor, means in the partition for permitting the passage of gaseous refrigerant from the evaporator to the compressor, and means permitting the evacuation of the motor compartment through the first namedmeans.v
  • a refrigerating apparatus in combination a condenser, an evaporator, a compressor, motor for driving the compressor, a fluid-tight casing entirely enclosing both the motor and compressor, a partition providing with the casing a compartment for the motor and v a compartment for thc compressor, means in the partition extending substantially transversely of the axis vof the partition for permitting the passage of gaseous refrigerant from the evaporator to the compressor, and means connecting the motor compartmentl with the transverse meansv whereby to permit evacuation of the motor compartment through said transverse means.
  • a refrigerating apparatus in combination a condenser, an evaporator, a compressor, motor for driving the compressor, a fluid-tight casing entirely .enclosing both the motor and compressor, a partition providing with the casing a compartment for the motor and a compartment for the compressor, a conduit extending substantially'transversely of the axis of the partition for permitting the passage of gaseous refrigerant from the evaporator to the compressor, and a conduit connecting the motor compartment with the tranverse conduit.
  • a refrigerating apparatus the combination of an evaporator, a condenser, a y lcompressor, a motor for driving the compressor, a Huid-tight casing entirely enclosing both the motor and the compressor,'and par tition means provided in the casing and forming with the casing a' compartment for housing the motor and a second compartment for both housing the compressor and for storing lubricant and compressed refrigerant.
  • a compressor for driving the compres-V sor, a duid-tight casing entirely enclosing both the motor and the compressor, and partition means provided in the casing and forming with the casing a compartment for housing the motor and acompartment for housing the compressor, means connecting the intake port of the compressor with the motor compartment and means connecting the outlet port of the compressor to the compressor compartment.
  • a fluid-tight casing entirely enclosing both the motor and the compressor and partition means provided in the casing and forming 37.
  • a refrigerating apparatus comprising a closed casing, a partition wall dividing the casing into a suction chamber and a pressure chamber, a compressor in said casing and a driving motor therefor disposedin the suction chamber.
  • the combination oit' condensing means, evaporating means, a compressor, a motor for driving the compressor, a hermetically sealed casing enclosing the motor and the compressor, partition means dividing the casing into a motor compartment and a compressor compartment, communicating means provided between theoutlet of the compressor and the compressor compartment, and communicating means provided between the inlet of the compressor and the motor compartment, whereby the suction and discharge pressures of the compressor prevail in the motor compartment and thecompressor compartment, respectively.
  • the compressor located in the high pressure compart ment, the motor located in the low pressure compartment, and means permitting evacuation of the low pressure compartment through the compressor to the high pressure conpartment, when the compressor is operate

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
US509672A 1921-10-22 1921-10-22 Refrigerating machine Expired - Lifetime US1797287A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR557695D FR557695A (enrdf_load_stackoverflow) 1921-10-22
US509672A US1797287A (en) 1921-10-22 1921-10-22 Refrigerating machine
GB28107/22A GB187604A (en) 1921-10-22 1922-10-16 Improvements relating to refrigerating machines

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Application Number Priority Date Filing Date Title
US509672A US1797287A (en) 1921-10-22 1921-10-22 Refrigerating machine

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US1797287A true US1797287A (en) 1931-03-24

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FR (1) FR557695A (enrdf_load_stackoverflow)
GB (1) GB187604A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4895496A (en) * 1988-06-08 1990-01-23 Copeland Corporation Refrigeration compressor
US5064356A (en) * 1990-10-01 1991-11-12 Copeland Corporation Counterweight shield for refrigeration compressor
USRE34297E (en) * 1988-06-08 1993-06-29 Copeland Corporation Refrigeration compressor
US5380170A (en) * 1993-10-12 1995-01-10 Copeland Corporation Scroll compressor oil pumping system
WO2009121547A3 (en) * 2008-04-01 2009-11-26 Efficient Energy Gmbh Liquefier for a heat pump, heat pump, and method of manufacturing a liquefier
US20110107787A1 (en) * 2008-04-01 2011-05-12 Holger Sedlak Vertically Arranged Heat Pump and Method of Manufacturing the Vertically Arranged Heat Pump
US20140047861A1 (en) * 2011-03-30 2014-02-20 Kawasaki Jukogyo Kabushiki Kaisha Turbo Refrigerator
CN110454531A (zh) * 2019-07-11 2019-11-15 江苏长龄液压股份有限公司 一种中心设有检测介质的弹簧

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2327934C1 (ru) * 2006-12-28 2008-06-27 Федеральное государственное унитарное предприятие "Московское машиностроительное производственное предприятие "САЛЮТ" (ФГУП "ММПП "САЛЮТ") Теплонасосная установка

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4895496A (en) * 1988-06-08 1990-01-23 Copeland Corporation Refrigeration compressor
USRE34297E (en) * 1988-06-08 1993-06-29 Copeland Corporation Refrigeration compressor
USRE37019E1 (en) 1988-06-08 2001-01-16 Copeland Corporation Refrigeration compressor
US5064356A (en) * 1990-10-01 1991-11-12 Copeland Corporation Counterweight shield for refrigeration compressor
US5380170A (en) * 1993-10-12 1995-01-10 Copeland Corporation Scroll compressor oil pumping system
US20110100054A1 (en) * 2008-04-01 2011-05-05 Holger Sedlak Liquefier for a Heat Pump, Heat Pump, and Method for Manufacturing a Liquefier
WO2009121547A3 (en) * 2008-04-01 2009-11-26 Efficient Energy Gmbh Liquefier for a heat pump, heat pump, and method of manufacturing a liquefier
US20110107787A1 (en) * 2008-04-01 2011-05-12 Holger Sedlak Vertically Arranged Heat Pump and Method of Manufacturing the Vertically Arranged Heat Pump
JP2011516812A (ja) * 2008-04-01 2011-05-26 エフィシェント・エナージー・ゲーエムベーハー ヒートポンプ用凝縮器、ヒートポンプ、およびヒートポンプ用凝縮器の製造方法
US9933190B2 (en) * 2008-04-01 2018-04-03 Efficient Energy Gmbh Vertically arranged heat pump and method of manufacturing the vertically arranged heat pump
US9939182B2 (en) * 2008-04-01 2018-04-10 Efficient Energy Gmbh Liquefier for a heat pump, heat pump, and method for manufacturing a liquefier
US20140047861A1 (en) * 2011-03-30 2014-02-20 Kawasaki Jukogyo Kabushiki Kaisha Turbo Refrigerator
US9890973B2 (en) * 2011-03-30 2018-02-13 Kawasaki Jukogyo Kabushiki Kaisha Turbo refrigerator
CN110454531A (zh) * 2019-07-11 2019-11-15 江苏长龄液压股份有限公司 一种中心设有检测介质的弹簧

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GB187604A (en) 1923-09-13
FR557695A (enrdf_load_stackoverflow) 1923-08-13

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