US2878657A - Self-contained heating and cooling apparatus - Google Patents

Self-contained heating and cooling apparatus Download PDF

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Publication number
US2878657A
US2878657A US705281A US70528157A US2878657A US 2878657 A US2878657 A US 2878657A US 705281 A US705281 A US 705281A US 70528157 A US70528157 A US 70528157A US 2878657 A US2878657 A US 2878657A
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United States
Prior art keywords
air
enclosure
compartment
condenser
casing
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Expired - Lifetime
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US705281A
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English (en)
Inventor
Leonard W Atchison
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General Electric Co
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General Electric Co
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Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US705281A priority Critical patent/US2878657A/en
Priority to FR782601A priority patent/FR1217348A/fr
Application granted granted Critical
Publication of US2878657A publication Critical patent/US2878657A/en
Priority to OA50863A priority patent/OA00786A/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/028—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by air supply means, e.g. fan casings, internal dampers or ducts
    • F24F1/0284—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by air supply means, e.g. fan casings, internal dampers or ducts with horizontally arranged fan axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/029—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by the layout or mutual arrangement of components, e.g. of compressors or fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/03—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by mounting arrangements
    • F24F1/031—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by mounting arrangements penetrating a wall or window
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/032—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heat exchangers
    • F24F1/0323—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/0358—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing with dehumidification means

Definitions

  • the present invention relates to a self-contained air conditioning unit and more particularly to such a unit for supplying either heated or cooled air to an enclosure.
  • Another object of this invention is to provide air controlling means in a self-contained air conditioning unit for controlling the flow of air through a plurality of opposed openings which lead from the front and rear faces of the unit respectively into the various compartments of the conditioner.
  • a self-contained air conditioning unit having a plurality of air controlling valves, each of which is associated with a pair of opposed inlet and outlet openings of the unit for permitting selective control of the air flowing into and discharging from the unit in order to direct air either from the outside or from within the within separate compartments of the unit.
  • an air conditioning unit including a casing to be mounted in the wall of an enclosure.
  • a refrigerating system having a condenser and an evaporator each positioned in separate compartments formed within the casing.
  • Each compartment is divided by means including a shroud and a fan into separate sections and each of these sections contains a pair of opposed openings, one leading to the enclosure and the other facing the outdoors.
  • a closure means is provided in each section which is movable between each of the openings in each section to control the direction and amount of air flowing through each of the openings to provide a multiplicity of different conditioning effects.
  • Fig. '1 is a plan view in schematic form showing the air conditioner arrangement of the present invention.
  • Fig. 2 is an elevation view taken along line 22 of Fig. 1 showing the track and flexible air valve arrangement within a single section;
  • FIG. 3 is a diagrammatical view of the air conditioner unit of Fig. 1 illustrating the arrangement of the air valves forheating air circulated through the unit from the enclosure; Fig.
  • FIG. 4 is a diagrammatical view of the air conditioner'of I Fig. 1 illustrating the air valve arrangement for exhausting air from the enclosure;
  • Fig. 5 is a diagrammatical view of the air conditioner illustrating the air valve arrangement for venting fresh air from the outside into the enclosure;
  • Fig. 6 is a diagrammatical view illustrating the air valves arrangement for providing dehumidification of air within the enclosure
  • Fig. 7 is a diagrammatical view illustrating the air valve arrangement for cooling air from the enclosure as well as for introducing a metered amount of fresh air from the outside and for exhausting a certain amount of air from the enclosure;
  • Fig. 8 is a diagrammatical view taken along line 8-8 of Fig. 7;
  • Fig. 9 is a diagrammatical view taken along line 9--9 of Fig. 7;
  • Fig. 10 is a cross sectional view of the edge of one air valve.
  • FIG. 1 there is shown an air conditioner unit including a casing 2 having the front wall 3 thereof arranged substantially flush with the inner surface of the wall 5 of the enclosure 4.
  • the casing 2 could easily be mounted with the rear wall 6 mounted flush against the outer surface of the enclosure wall with the air conditioning unit extending a short distance into the enclosure or, if the wall were of proper thickness, the casing could be mounted with both the front and rear walls 3 and 6 respectively mounted flush with both surfaces of the enclosure wall.
  • the casing is divided by a barrier 7 into two separate compartments 8 and 9.
  • a refrigeration system including an evaporator 11 and a condenser 12 connected in refrigerant flow relationship with a compressor 13.
  • the evaporator 11 always removes heat from air within the evaporator compartment 8 while the condenser discharges heat to the air within the condenser compartment 9.
  • the barrier 7 extends substantially transverse to the longitudinal dimension of the rectangular casing 2, or transverse to the wall, thereby dividing the casing into two compartments with each of the compartments having sides facing respectively the enclosure and the outdoors.
  • the evaporator compartment 8 is substantially divided into inlet and outlet sections 14 and 16 respectively by a fan shroud 17 and fan 18 which also provides air circulation through the evaporator compartment 8. Air is circulated by the fan 18 from the evaporator compartment inlet section 14, to the evaporator compartment outlet section 16.
  • the condenser compartment 9 is substantially divided by the shroud 19 and the condenser fan 21 into condenser compartment inlet and outlet sections 22 and 23.
  • the condenser fan 21 is arranged to circulate air through the condenser compartment in the direction from the condenser compartment inlet section 22 to the outlet section 23.
  • both of the fans 18 and 21 are rotated by a shaft 24 driven by the motor 26 mounted within the condenser compartment 9 or, more specifically, within the outlet section 23 of the condenser compartment.
  • the casing 2 is divided into four sections by the barrier 7 and the two fan shrouds 17 and 19 in combination with their respective fans 18 and 21. It can be seen that all of the heat producing members of the unit are located in the condenser com partment 9. More specifically, the compressor 13, condenser 12, and fan motor 26 are all mounted so that the 'heat produced by these members 'is transferred *toair 3 circulated within the Condenser compartment 9. This arrangement is advantageous because it permits full utilization of the heating and cooling capacities of the components within the separate compartments.
  • each section has a pair of openings therein; one facing the outdoors, and a second opening facing the enclosure whereby air can be both introduced and discharged from the two separate compartments in two diflerent directions.
  • the evaporator compartment inlet section 14 contains openings 27 and 28 and the outlet section 16 is provided with openings 29 and 31.
  • condenser compartment inlet section 22 is provided with openings 32 and 33 and the outlet section 23 is provided with openings 34 and 36.
  • each pair of openings within the separate sections is provided with a closure means for independently and selectively controlling the amount of air flow and the direction of air flow into the sections and, thereby, through the two separate compartments.
  • each section is pro vided with a flexible air valve or damper which is fitted into track members 37 extending completely around the upper portion of the casing.
  • Each of the valves is made of a thin sheet of flexible material such as a steel or aluminum or some material which will not lose its resiliency due to the changes in temperature ordinarily encountered in heating and cooling apparatus of this type.
  • the flexible valves are designated generally by the reference numeral 38 and are specifically designated 38a, 38b, 33c and 38d with respect to the four separate sections in which they are mounted, as viewed from left to right in Fig. 1.
  • the tracks 37 extend downwardly into the casing or opposite sides ofthe sections adacent the edges of the openings thereof.
  • the curved tracks or members 37 are formed of a substantially U shaped or channel shaped cross section. These members support the edges of the valves which are inserted into the groove or opening in the U-shaped track.
  • the flexible valves 38 slide around the track members into position to restrict the air flowing through one or the other of the openings in each section.
  • each of the valves 38 has attached to its'opposite edges a resilient material 39, such as a sponge rubber strip or a strip of heavy felt material. This may be more clearly seen in Fig. 10.
  • the material 39 provides an reflective seal between the track members and the air valves.
  • each of the air valves are movable independently one from the other. This movement is provided by a plurality of independently operated driving means which move each of the flexible valves along the track members to any desired position according to the particular conditioning effect desired within the enclosure. More specifically, there is associated with each of the air valves a small reversible capacitor run motor 41 for driving, in either direction through appropriate gearing, a drive sprocket 42 having a plurality of teeth thereon which engage with perforations 43 formed in the edge portions of the individual air valves 38. The drive sprockets 42 drive the air valves 38 somewhat in the same manner as motion picture film is-driven through a projector by the sprockets engaging the perforations in the outer edges of film.
  • the driving arrangement is controllable to such an extent that the air valves .38may be stopped in their movement along the track members .37 at any position between a fully closed position on one .side of the section and 'fully closed position on the otherside of the section. Thlspermits a partial flow of air into or out of the sections in either direction according to the particular desires of the operator.
  • the curved track member 37 has its underside, or one of the legs of the U-shaped section, broken away to permit the insertion of the drive sprocket 42 for engaging the edge of the flexible air valve.
  • only one drive sprocket 42 was used to drive each of the flexible air batfles and this worked satisfactorily.
  • the shafts 44 are shown extended across the top of each section and these drive a second sprocket (not shown, but identical to sprocket 42) on the opposite sides of each of the sections thereby supplying a driving force to the opposite edges of the flexible valves 38.
  • This arrangement insures that the valves run true within the channel shaped track members 37 and do not bind therein. This, in turn, reduces the amount of wear on the resilient material on the edges of the air valves 38.
  • the air valves 38 are motor driven or power operated, obviously they could be manually movable, by substituting a gear and crank arrangement (not shown) for the drive motor with the operating crank extending outwardly through the front face ofthe unit.
  • a gear and crank arrangement (not shown) for the drive motor with the operating crank extending outwardly through the front face ofthe unit.
  • the most desirable arrangement is to have the air baffles powered upon actuation of a drive motor, such as the motors illustrated in the present embodiment of the invention.
  • the air flow through the conditioner is such as tocool the air circulated from enclosure 4. That is, with the air valves 38c and 38d closing the openings 29 and 27 respectively, air from within the enclosure is drawn into the evaporator compartment -8 through the opening 28 where it is passed through the evaporator 11 and cooled. The air then flows from the evaporator inlet compartment 14 to the evaporator discharge compartment 16 and is discharged into the room through the opening 31 in the discharge compartment 16.
  • the air valves 38a and 38b are arranged to close the openings 33 and 36 respectively to the sections 22 and 23 and, with the valves in this position, air from the outside is drawn into the condenser compartment inlet section 22 through the opening 32. This outside air is then forced over the condenser 12, removing heat from the condenser, and then passes through the scroll 19 intothe condenser outlet compartment 23. It is then discharged to the outdoors through the opening 34.
  • the versatility .of air valve arrangement of the present invention can well be realized by reference to the Figs. 3 through 9.
  • the air valves arranged as shown in Fig. 3 the unit provides a souce of heat for air within the enclosure.
  • room air is circulated through the condenser compartment 9 where it is'heated prior to its discharge back into the enclosure, while outside air is brought into the evaporator compartment where the air gives up its heat and is discharged back into the outside atmosphere.
  • Fig. 4 air is drawn from the enclousre into both the condenser and the evaporator compartment inlet sections 23 and 16, respectively, and is discharged to the outdoors through both the condenser and evaporator compartment outlet sections 22 and '14 respectively.
  • both of the fans are utilized to exhaust air through the unit to the outdoors.
  • Fig. 5 there is shown an arrangement, which is the reverse of that shown in Fig. 4, and which provides ventilation from the outside into the enclosure. That is, outside air is drawn into both vthecondenser and evaporator inlet compartments22 and 14, respectively, and discharged into the enclosure from the condenser and evaporator outlet sections 23 and 16, respectively.
  • a pressure responsive device (not shown) disposed 'in a position to sense the decreased air pressure in the section 14 due to the restricted flow of air through the evaporator 11, or any other means for sensing frost conditions may be used to automatically energize the motors to move the valves to the defrost position.
  • An auxiliary heater (not shown) may also be energized at this time to supplyheat to the enclosure while the evaporator is defrosting.
  • 'Also when the unit is operating in the manner illustrated in Fig. 6, water is removed from the air as it flows through the evaporator compartment and this air is cooled while the air flowing through the condenser compartment is heated. The overall effect is to reduce the amount of moisture in the air within the enclosure.- Thus, the air conditioning unit becomes a dehumidifier when operated with the valves arranged as in Fig. 6.
  • FIGs. 1, 3, 4, 5 and 6 Various modifications of the arrangements shown in Figs. 1, 3, 4, 5 and 6 are made by moving some of the air valves to a posititon in which they partially open both openings leading to the particular section thereby permitting the flow of air into the section from both the outdoors and from within the enclosure.
  • the air valves 38a and 38d have-been moved such that they are positioned to permit air flow into the evaporator and condenser inlet sections simultaneously from both the outdoors and the enclosure.
  • air flowing into the inlet sections 14 from both the outdoors and the enclosure is mixed and cooled in the evaporatorcompartment 8 and this mixed air is then discharged into the enclosure.
  • the air valve 38a is arranged in the condenser inlet section 22 to permit a fairly large volume of outdoor air into the section and also to permit a small amount of enclosure air to be drawn into the section. Obviously, the air valves can be moved to any position to permit almost complete quantitative control of the makeup and discharge air for the particular conditioning effect desired.
  • the evaporator and the condenser are arranged in circular fashion within their respective compartments. While the circular heat exchanger is presently the preferred one for the coils, other configurations are possible. However, this configuration is particularly desirable because the openings leading to the particular sections are arranged on opposite sides of the sections and the air flows into the sections from opposite directions. That is, by this heat exchanger configuration it is possible to more efiiciently take advantage of all of the space within each of the inletsections and to utilize the capacity of the heat exchangers to its fullest extent regardless of the direction of air flow. In the illustrated embodiment of the invention the cylindrically formed heat exchangers are arranged slightly outwardly from the projected periphery of the inlet to the scrolls and air flows through the heat exchangers around substantially the entire 360 of the heat exchanger. Y
  • a selfcontained air conditioning unit having an air flow pattern and controlling means therefor of great versatility to provide a variety of different conditioning effects for the air within the enclosure.
  • the arrangement is such as to take advantage of the full capacity of the heat exchanger members and the heat producing membersof the unit while still permitting the unit to be flush mounted with respect to eithersurface of the enclosure wall.
  • An air conditioning unit for heating and coolingan enclosure comprising a casing adapted to be positioned in a wall of said enclosure with one side of said casing facing the outdoors and another side of said casing facing said enclosure, a barrier dividing said casing into an evaporator compartment and a condenser compartment,
  • a refrigerating system including a condenser in said condenser compartment and an evaporator in said evaporator compartment, a fan shroud in each of said compartments substantially dividing said compartment into inlet and outlet sections, a fan within each of said shrouds for circulating air through each of said compartments in a direction from said inlet section to said outlet section, a motor mounted in said barrier having a shaft extending into each of said compartments for driving said fans, each of said sections in each compartment containing a pair of openings therein, one opening in each section being in said outdoor facing side of said casing and the other opening in each section being in said enclosure facing side of said casing, a flexible air damper associated with each pair of openings in each of said sections, means for moving each of said flexible air dampers to a plurality of positions between a first position wherein it opens said one opening and fully closes said other opening to a final position wherein it opens said other opening and fully closes said one opening, said moving means including curved track members arranged
  • An air conditioning unit for heating and cooling an enclosure comprising a casing adapted to be positioned in a wall of said enclosure with one side of said casing facing the outdoors and the opposite side of said casing facing said enclosure, a barrier extending substantially normal to Said outdoor and enclosure facing sides of said casing and dividing said casing into an evaporator compartment and a condenser compartment, a refrigcrating system including a condenser in said condenser compartment and an evaporator insaid evaporator compartment, a fan shroud in each of said compartments extending substantially normal to said outdoor and enclosure facing sides of said casing and substantially dividing each of said compartments into inlet and outlet sec- .tions, each of said sections containing a pair of openings,
  • a motor mounted in said barrier having a shaft extending substantially normal to said barrier into each of said outlet sections of said respective compartments, fans mounted on the ends of said shaft and arranged within said shrouds dividing said compartments into said inlet and outlet sections for circulating air streams through each of said compartments in a direction from said inlet sections to said outlet sections, said heat exchangers in said respective compartment arranged within said inlet sections of said compartments and formed in cylindrical fashion with the axis of said cylindrical heat exchangers arranged substantially normal to the axis of said motor shaft and with the inner periphery of said cylindrical heat exchangers arranged outwardly from the projected perimeter of the openings in said fan shrouds, and closure means associated with each pair of openings in each section, said closure means being independently operable to a plurality of positions between a first position wherein said closure means opens said one opening and fully closes said other opening to a final position
  • An air conditioning unit for heating and cooling ,an enclosure comprising a casing adapted to be positioned in a wall of said enclosure with one side of said casing facing the outdoors and the opposite side of said casing facing said enclosure, a barrier extending substantially normal to said outdoor and enclosure facing sides of said casing and dividing said casing into an evaporator compartment and a condenser compartment, a refrigerating system including a condenser in said codenser compartment and an evaporator in said evaporatorcompartment, a fan shroud in each of said compartments substantially dividing said compartment into inlet and outlet sections, each of said sections containing a pair of openings, one opening of each section being disposed in said outdoor facing side of said casing and the other opening of each section being disposed on the opposite side of said section in said enclosure facingside of said casing, a fan arranged within each of said shrouds for circulating air through each of said compartments in a direction from said inlet section to said outlet section, :channel shaped guide

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
US705281A 1957-12-26 1957-12-26 Self-contained heating and cooling apparatus Expired - Lifetime US2878657A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US705281A US2878657A (en) 1957-12-26 1957-12-26 Self-contained heating and cooling apparatus
FR782601A FR1217348A (fr) 1957-12-26 1958-12-24 Unité de conditionnement de l'air
OA50863A OA00786A (fr) 1957-12-26 1964-12-16 Unité de conditionnement de l'air.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US705281A US2878657A (en) 1957-12-26 1957-12-26 Self-contained heating and cooling apparatus

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US2878657A true US2878657A (en) 1959-03-24

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US705281A Expired - Lifetime US2878657A (en) 1957-12-26 1957-12-26 Self-contained heating and cooling apparatus

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US (1) US2878657A (fr)
FR (1) FR1217348A (fr)
OA (1) OA00786A (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999370A (en) * 1960-08-11 1961-09-12 Westinghouse Electric Corp Air conditioning apparatus
US3991819A (en) * 1973-04-11 1976-11-16 Sealed Motor Construction Co. Ltd. Air conditioning device
US4143523A (en) * 1975-09-25 1979-03-13 Burger Manfred R Apparatus to transfer heat or refrigerant
US4285210A (en) * 1980-04-28 1981-08-25 General Electric Company Self-contained heating and cooling apparatus
US4297855A (en) * 1980-05-21 1981-11-03 General Electric Company Air valve heat pump
US4297853A (en) * 1980-05-15 1981-11-03 General Electric Company Retractable handle for air valve heat pump
US4297854A (en) * 1980-04-28 1981-11-03 General Electric Company Air valve heat pump
US4346566A (en) * 1981-06-04 1982-08-31 General Electric Company Refrigeration system gravity defrost
US4346565A (en) * 1981-06-04 1982-08-31 General Electric Company Gravity defrost
US4478053A (en) * 1982-04-05 1984-10-23 Toyota Jidosha Kabushiki Kaisha Air-conditioning machine
US20110061840A1 (en) * 2007-12-07 2011-03-17 Richard Goldmann Apparatus for cooling an exerciser having convenient centralized control of air outlets built into a stationary exercise device
US20120222843A1 (en) * 2011-03-02 2012-09-06 James Mitchell Air Conditioner Condenser Booster

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2391151A (en) * 1944-02-14 1945-12-18 Gen Motors Corp Refrigerating apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2391151A (en) * 1944-02-14 1945-12-18 Gen Motors Corp Refrigerating apparatus

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999370A (en) * 1960-08-11 1961-09-12 Westinghouse Electric Corp Air conditioning apparatus
US3991819A (en) * 1973-04-11 1976-11-16 Sealed Motor Construction Co. Ltd. Air conditioning device
US4143523A (en) * 1975-09-25 1979-03-13 Burger Manfred R Apparatus to transfer heat or refrigerant
US4297854A (en) * 1980-04-28 1981-11-03 General Electric Company Air valve heat pump
US4285210A (en) * 1980-04-28 1981-08-25 General Electric Company Self-contained heating and cooling apparatus
US4297853A (en) * 1980-05-15 1981-11-03 General Electric Company Retractable handle for air valve heat pump
US4297855A (en) * 1980-05-21 1981-11-03 General Electric Company Air valve heat pump
FR2483055A1 (fr) * 1980-05-21 1981-11-27 Gen Electric
US4346566A (en) * 1981-06-04 1982-08-31 General Electric Company Refrigeration system gravity defrost
US4346565A (en) * 1981-06-04 1982-08-31 General Electric Company Gravity defrost
US4478053A (en) * 1982-04-05 1984-10-23 Toyota Jidosha Kabushiki Kaisha Air-conditioning machine
US20110061840A1 (en) * 2007-12-07 2011-03-17 Richard Goldmann Apparatus for cooling an exerciser having convenient centralized control of air outlets built into a stationary exercise device
US20120222843A1 (en) * 2011-03-02 2012-09-06 James Mitchell Air Conditioner Condenser Booster

Also Published As

Publication number Publication date
OA00786A (fr) 1967-11-15
FR1217348A (fr) 1960-05-03

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