WO1991005977A1 - A heat pump system having a refrigerant circuit in the form of an exchangeable unit, and means for effecting such an exchange - Google Patents

A heat pump system having a refrigerant circuit in the form of an exchangeable unit, and means for effecting such an exchange Download PDF

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Publication number
WO1991005977A1
WO1991005977A1 PCT/SE1990/000654 SE9000654W WO9105977A1 WO 1991005977 A1 WO1991005977 A1 WO 1991005977A1 SE 9000654 W SE9000654 W SE 9000654W WO 9105977 A1 WO9105977 A1 WO 9105977A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
refrigerant
cabinet
frame
heat pump
Prior art date
Application number
PCT/SE1990/000654
Other languages
French (fr)
Inventor
Håkan Persson
Original Assignee
Ivt Industrier Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ivt Industrier Ab filed Critical Ivt Industrier Ab
Publication of WO1991005977A1 publication Critical patent/WO1991005977A1/en

Links

Classifications

    • 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
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/12—Arrangements for connecting heaters to circulation pipes
    • F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
    • 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
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F25D19/02—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors plug-in type

Definitions

  • the present invention relates to a heat pump system of the kind defined in the preamble of Claim 1, and to an arrangement for facilitating the exchange of a refrigerant unit forming part of the system.
  • a fault in known heat pumps which in many cases form the sole means of heating dwellings, such as houses and apartments, or entire housing districts, can cause heating to be interrupted for several days, before the fault is repaired.
  • the amount of freon present in the heat pump exceeds 3 kg, it is necessary to summon an authorized refrigeration engineer and to transport necessary equipment to the location of the pump in order to drain refrigerant from and return refrigerant to the system, or alternatively to fill the system with fresh refrigerant.
  • the fault cannot be repaired on site, it is necessary to take the faulty component to a repair shop or to return said component to the gene- ral supplier.
  • the loss of heat and the loss of hot tap-water creates a great deal of discomfort and irritation, and even if a reserve heat ⁇ ing facility is provided, this facility is often under- dimensioned and perhaps difficult to start-up.
  • a further object of the invention is to reduce the freon content of such systems to less than 100 g for each kWh delivered by the system, by provi ⁇ ding a compact constructional method and through the use of highly effective components, therewith enabling the layman to carry out work on systems having a power rating of up to 30 kWh.
  • Figure 1 is a block diagram illustrating a heat pump system
  • Figure 2 illustrates the mechanical construction of the system in a cabinet intended therefor
  • Figure 3 illustrates an arrangement for lifting and transporting a refrigerant unit.
  • FIG. 1 is a block diagram which illustrates an ex ⁇ emplifying embodiment of a heat pump system.
  • the system includes a heat pump unit which is generally referenced 1 and which includes a refrigerant circuit comprising a compressor 5, a first heat-exchanger 6 which is con ⁇ nected thermally to a heating system located externally of the heat pump unit and generally referenced 2, an expansion valve 7, a filter 8, and a second heat- exchanger 9, which is connected thermally to a heating source located externally of the heat pump unit 1 and identified generally by the reference numeral 3.
  • the refrigerant circulated in the circuit consists of one of the refrigerant types retailed under the designation freon.
  • the heating system 2 includes a water heater 20 having an inlet side connected to a cold water pipe KV and an outlet side connected to a hot water pipe W. Connected in series with the water heater 20 are three heating elements 21 and a circulation pump 22 mounted in the heat pump unit 1 feeds a heat transporting medium, normally water, from the heat exchanger, through a heating loop in the water heater 20, and from there through the elements 21 back to the heat exchanger 6.
  • the heating system includes two valves 23 across which the connection to the heat pump unit 1 is made.
  • the heat source 3 includes a pipe loop 31 which is connected to the second heat-exchanger 9 and which is intended to be mounted in a bore hole in the ground for instance, for the purpose of utilizing ground heat.
  • the loop carries a freezing-point lowering aqueous solution which is pumped around the loop with the aid of a circulation pump 32 mounted in the heat pump unit 1, said unit also including an expansion vessel 33 and valves 30 fitted in the connecting pipes.
  • Figure 2 illustrates a cabinet 10, from which the front panel has been removed and which accommodates the heat pump unit 1.
  • the cabinet is constructed from a frame ⁇ work 19 of square tubes and the top of the cabinet is provided with four pipe connectors 24 to which the pipes of the heating system and of the heating source respectively are connected. Also provided is a lead- through 25 for electrical wiring.
  • a control panel 26 mounted at the top of the front of the cabinet is a control panel 26 provided with switches and control lamps.
  • an electrical connector panel 27 mounted beneath the control panel is an electrical connector panel 27, which is normally covered by a front plate and on which the electrical installations are mounted.
  • the cabinet is mounted on a base frame 13 which rests on the foun- dation surface 14. Extending from the base frame 13, in the four corners of the cabinet are spacer supports 12 on which a bottom plate 11 is detachably fitted.
  • the components of the refrigerant circuit are assembled on the bottom plate 11 to form a unit which can be easily removed from the heat pump unit and replaced with a further refrigerant unit and which is released from the remainder of the heat pump, by opening the four pipe couplings 28 and moving the flexible pipes or hoses 29 to one side and by also disconnecting the electric cables (not shown) from the compressor 5 and also disconnecting a transducer or sensor (not shown) from the control equipment. Subsequent to releasing the refrigerant unit, the unit can be easily withdrawn from the cabinet for service or for replacement.
  • the arrangement includes a rectangular outer frame 15 made of angle iron and having vertically dis ⁇ posed outer sides with the horizontally arranged legs of the angle iron facing towards each other.
  • the length of the frame corresponds roughly to twice the depth of the cabinet 10 and mounted in the one half of the outer frame is a raisable and lowerable inner frame 16.
  • Mounted on the vertical inner surfaces of the inner frame 16 are rollers 17.
  • rollers 17 are mounted in a manner such that in the raised position of the inner frame said rollers will partially project up over the edge of the outer frame 15 and form a roller conveyer together with rollers 18 mounted in the other half of the outer frame and projecting up over the frame edge. Subsequent to having lifted the bottom plate 11 of the refrigerant unit away from the base frame 13, with the aid of the inner frame 16, the bottom plate 11 carrying said unit can be withdrawn from the cabinet 10 and transported along the foundation surface 14 with the aid of transport rollers 19 mounted beneath the outer frame 15.
  • Raising of the bottom plate 11 is made possible by the fact that the vertical extension of one half of the outer frame 15 of said transport device is so adapted that said frame half will fit exactly into the space between the base frame 13 of the cabinet and the bottom plate 11.
  • the inner frame 16 can be displaced relative to the outer frame 15, by means of a lever arm mechanism 34-36, and locked in this new position, the inner frame having reached this position by rolling on rollers 37 up and along keys or wedges 38 fitted on the outer frame 15.
  • the bottom plate 11 is lifted from the supports 12 by the rollers 17 and can be moved out over the transport rollers 19, as described above.
  • the unit When mounting a refrigerant unit in a heat pump cabi ⁇ net, the unit is positioned on the transport rollers 19 of the second frame half of the outer frame and moved to the cabinet, whereafter the one frame-half with the inner frame 16 in its raised position is moved in over the frame part 13 of the cabinet and the refrigerant unit can now be rolled into the cabinet.
  • one outer frame-half of the transport arrange ⁇ ment has been lowered against the base frame 13 of the cabinet and is locked to said base frame by the weight of the refrigerant unit.
  • the inner frame 16 is lowered with the aid of the lever arm mechanism 34-36 such that the bottom plate will now rest on the supports 12 and is screwed firmly to said supports.
  • the heat pump is ready to be started-up.

Abstract

The invention relates to a heat pump system (1) which is configured particularly to facilitate servicing of the system. The system (1) is accommodated in a floor-standing cabinet (10), in which the refrigerant circuit is combined to form a compact unit (4) mounted on a bottom plate (11). This unit (4) can be readily removed from the heat pump in general, and can be lifted from its attachments or supports (12) with the aid of an arrangement particularly developed for this purpose, and withdrawn from the cabinet (10) for service or replacement. The refrigerant unit can be exchanged in such a simple fashion as to obviate the need to employ workmen specialized in this art or the need to use special tools, and can be carried out by the unskilled person while conforming with current regulations.

Description

A HEAT PUMP SYSTEM HAVING A REFRIGERANT CIRCUIT IN THE FORM OF AN EXCHANGEABLE UNIT, AND MEANS FOR EFFECTING SUCH AN EXCHANGE
TECHNICAL FIELD
The present invention relates to a heat pump system of the kind defined in the preamble of Claim 1, and to an arrangement for facilitating the exchange of a refrigerant unit forming part of the system.
BACKGROUND ART
A fault in known heat pumps, which in many cases form the sole means of heating dwellings, such as houses and apartments, or entire housing districts, can cause heating to be interrupted for several days, before the fault is repaired. When the amount of freon present in the heat pump exceeds 3 kg, it is necessary to summon an authorized refrigeration engineer and to transport necessary equipment to the location of the pump in order to drain refrigerant from and return refrigerant to the system, or alternatively to fill the system with fresh refrigerant. If the fault cannot be repaired on site, it is necessary to take the faulty component to a repair shop or to return said component to the gene- ral supplier. In very cold conditions, the loss of heat and the loss of hot tap-water creates a great deal of discomfort and irritation, and even if a reserve heat¬ ing facility is provided, this facility is often under- dimensioned and perhaps difficult to start-up.
DISCLOSURE OF THE INVENTION
An object of the invention is to provide a heat pump system with which the refrigerant containing circuit has the form of an easily fitted and easily exchanged or replaced unit. Another object of the invention is to enable .the refrigerant unit to be exchanged and handled in a simple fashion, such as to allow the work to be carried out by a layman in the art. In view of the fact that the layman is prevented by current regulations from carrying out work on systems which contain more than 3 kg of freon-type refrigerant and that subse¬ quently authorization is required before such work is carried out, a further object of the invention is to reduce the freon content of such systems to less than 100 g for each kWh delivered by the system, by provi¬ ding a compact constructional method and through the use of highly effective components, therewith enabling the layman to carry out work on systems having a power rating of up to 30 kWh.
These objects are achieved in accordance with the invention with the refrigerant unit and the unit hand¬ ling arrangement set forth in the following claims.
BRIEF DESCRIPTION OF THE DRAWINGS
An exemplifying embodiment of an inventive heat pump system and of an arangement for handling the refrige¬ rant circuit of said system in accordance with the invention will now be described in more detail with reference to the accompanying drawings, in which Figure 1 is a block diagram illustrating a heat pump system, Figure 2 illustrates the mechanical construction of the system in a cabinet intended therefor, and Figure 3 illustrates an arrangement for lifting and transporting a refrigerant unit.
DESCRIPTION OF AN EXEMPLIFYING EMBODIMENT Figure 1 is a block diagram which illustrates an ex¬ emplifying embodiment of a heat pump system. The system includes a heat pump unit which is generally referenced 1 and which includes a refrigerant circuit comprising a compressor 5, a first heat-exchanger 6 which is con¬ nected thermally to a heating system located externally of the heat pump unit and generally referenced 2, an expansion valve 7, a filter 8, and a second heat- exchanger 9, which is connected thermally to a heating source located externally of the heat pump unit 1 and identified generally by the reference numeral 3. The refrigerant circulated in the circuit consists of one of the refrigerant types retailed under the designation freon.
The heating system 2 includes a water heater 20 having an inlet side connected to a cold water pipe KV and an outlet side connected to a hot water pipe W. Connected in series with the water heater 20 are three heating elements 21 and a circulation pump 22 mounted in the heat pump unit 1 feeds a heat transporting medium, normally water, from the heat exchanger, through a heating loop in the water heater 20, and from there through the elements 21 back to the heat exchanger 6. The heating system includes two valves 23 across which the connection to the heat pump unit 1 is made.
The heat source 3 includes a pipe loop 31 which is connected to the second heat-exchanger 9 and which is intended to be mounted in a bore hole in the ground for instance, for the purpose of utilizing ground heat. The loop carries a freezing-point lowering aqueous solution which is pumped around the loop with the aid of a circulation pump 32 mounted in the heat pump unit 1, said unit also including an expansion vessel 33 and valves 30 fitted in the connecting pipes. Figure 2 illustrates a cabinet 10, from which the front panel has been removed and which accommodates the heat pump unit 1. The cabinet is constructed from a frame¬ work 19 of square tubes and the top of the cabinet is provided with four pipe connectors 24 to which the pipes of the heating system and of the heating source respectively are connected. Also provided is a lead- through 25 for electrical wiring. Mounted at the top of the front of the cabinet is a control panel 26 provided with switches and control lamps. Mounted beneath the control panel is an electrical connector panel 27, which is normally covered by a front plate and on which the electrical installations are mounted. The cabinet is mounted on a base frame 13 which rests on the foun- dation surface 14. Extending from the base frame 13, in the four corners of the cabinet are spacer supports 12 on which a bottom plate 11 is detachably fitted. The components of the refrigerant circuit are assembled on the bottom plate 11 to form a unit which can be easily removed from the heat pump unit and replaced with a further refrigerant unit and which is released from the remainder of the heat pump, by opening the four pipe couplings 28 and moving the flexible pipes or hoses 29 to one side and by also disconnecting the electric cables (not shown) from the compressor 5 and also disconnecting a transducer or sensor (not shown) from the control equipment. Subsequent to releasing the refrigerant unit, the unit can be easily withdrawn from the cabinet for service or for replacement.
In order to facilitate the withdrawal and replacement of the relatively heavy refrigerant unit, a special arrangement has been developed for lifting and trans¬ porting said unit, this arrangement being shown in Figure 3. The arrangement includes a rectangular outer frame 15 made of angle iron and having vertically dis¬ posed outer sides with the horizontally arranged legs of the angle iron facing towards each other. The length of the frame corresponds roughly to twice the depth of the cabinet 10 and mounted in the one half of the outer frame is a raisable and lowerable inner frame 16. Mounted on the vertical inner surfaces of the inner frame 16 are rollers 17. The rollers 17 are mounted in a manner such that in the raised position of the inner frame said rollers will partially project up over the edge of the outer frame 15 and form a roller conveyer together with rollers 18 mounted in the other half of the outer frame and projecting up over the frame edge. Subsequent to having lifted the bottom plate 11 of the refrigerant unit away from the base frame 13, with the aid of the inner frame 16, the bottom plate 11 carrying said unit can be withdrawn from the cabinet 10 and transported along the foundation surface 14 with the aid of transport rollers 19 mounted beneath the outer frame 15.
Raising of the bottom plate 11 is made possible by the fact that the vertical extension of one half of the outer frame 15 of said transport device is so adapted that said frame half will fit exactly into the space between the base frame 13 of the cabinet and the bottom plate 11. When the one half of the outer frame 15 has been positioned beneath the bottom plate 11, the inner frame 16 can be displaced relative to the outer frame 15, by means of a lever arm mechanism 34-36, and locked in this new position, the inner frame having reached this position by rolling on rollers 37 up and along keys or wedges 38 fitted on the outer frame 15. At the same time as the outer frame is pressed therewith against the frame part 13 of the cabinet, the bottom plate 11 is lifted from the supports 12 by the rollers 17 and can be moved out over the transport rollers 19, as described above.
When mounting a refrigerant unit in a heat pump cabi¬ net, the unit is positioned on the transport rollers 19 of the second frame half of the outer frame and moved to the cabinet, whereafter the one frame-half with the inner frame 16 in its raised position is moved in over the frame part 13 of the cabinet and the refrigerant unit can now be rolled into the cabinet. In the initial stage, one outer frame-half of the transport arrange¬ ment has been lowered against the base frame 13 of the cabinet and is locked to said base frame by the weight of the refrigerant unit. Subsequent to positioning the bottom plate 11, the inner frame 16 is lowered with the aid of the lever arm mechanism 34-36 such that the bottom plate will now rest on the supports 12 and is screwed firmly to said supports. Subsequent to connect- ing the hoses 29 to the couplings 28 and opening the valves 22 and 30 and connecting-up the electric cables, the heat pump is ready to be started-up.
Because of the ease with which a refrigerant unit can be replaced and in view of the short time taken to effect such replacement, the most feasible action in the event of faults in heat pump units constructed in accordance with the invention is undoubtedly to effect such an exchange, which in principle can be accompli- shed by any one who has access to a screwdriver and an adjustable spanner. The faulty refrigerant unit can then be repaired by a local refrigeration engineer or returned to the suppliers. The risk of being without heat over long periods of time is thus completely eliminated when the refrigerant unit is replaced on a regular basis.

Claims

1. A heat pump unit for heating dwellings and/or other spaces and also for heating tap water, said unit (1) including a refrigerant circuit which comprises a compressor (5), a first heat-exchanger (6) which is thermally connected to a heating system (2) disposed outside the unit (1), an extension valve (7) and a second heat-exchanger (9) which is thermally connected to a heat source (3) arranged outside the unit (1), and in which circuit refrigerant is caused to circulate through said components in the order given, by the compressor (5), and which circuit also includes refri¬ gerant cleaning means in the form of filters (8) and the like, and means for connecting the unit (1) to the heating system (2) and the heat source (3), and also includes devices for connecting said circuit to the mains network and for controlling the amount of heat delivered, c h a r a c t e r i z e d in that the refrigerant circuit components are collected to form an exchangeable unit (4) which can be removed from the remainder of the heat pump unit (1).
2. A unit (2) according to Claim 1, c h a r a c - t e r i z e d in that the refrigerant unit (4) of said heat pump unit and connecting devices and control devices are housed in a cabinet (1) which is intended to stand on a supporting surface (14), for instance a boiler room floor, and which has at least one detach- able side panel; and in that the refrigerant unit (4) is mounted on a bottom plate (11) which is mounted adjacent the bottom of the cabinet and is withdrawable therefrom.
3. A unit according to Claim 2, c h a r a c t e r i ¬ z e in that the bottom plate (11) of the refrigerant unit (4) rests in the cabinet (10) on supports (12) mounted at a distance above the support surface (14) or a cabinet base frame (13) such as to enable the lifting means of a transport carriage to be inserted between the support surface (14) or the base frame (13) and the bottom plate (11).
4. An arrangement for lifting and transporting a refri¬ gerant unit (4) in accordance with Claim 3, c h a r a c t e r i z e d in that the arrangement includes a rectangular outer frame (15) provided with vertical outer sides and having a length which is approximately equal to twice the depth of the cabinet (10), and an inner frame (16) which can be raised and lowered within one frame-half of the outer frame (15), said inner frame (16) being provided with rollers (17) in a manner such that when the inner frame occupies its raised position the rollers will project partially up over the edge of the outer frame and form, together with rollers (18) projecting up over the edge of the other frame-half of the outer frame a roller path on which the bottom plate (11) of said refrigerant unit can be withdrawn from the cabinet (10) with the aid of the raisable inner frame (16), after having been raised from the support (12), such that the refrigerant unit can be transported on the support surface (14) with the aid of transport rollers (19) disposed beneath the outer frame (15).
PCT/SE1990/000654 1989-10-13 1990-10-12 A heat pump system having a refrigerant circuit in the form of an exchangeable unit, and means for effecting such an exchange WO1991005977A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8903385A SE8903385L (en) 1989-10-13 1989-10-13 HEAT PUMP PLANT WITH THE REFRIGERATOR CIRCUIT PROVIDED AS A REPLACEABLE DEVICE AND DEVICE FOR IMPLEMENTATION OF UNIT REPLACEMENT
SE8903385-6 1989-10-13

Publications (1)

Publication Number Publication Date
WO1991005977A1 true WO1991005977A1 (en) 1991-05-02

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ID=20377145

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1990/000654 WO1991005977A1 (en) 1989-10-13 1990-10-12 A heat pump system having a refrigerant circuit in the form of an exchangeable unit, and means for effecting such an exchange

Country Status (2)

Country Link
SE (1) SE8903385L (en)
WO (1) WO1991005977A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1380800A1 (en) * 2002-07-12 2004-01-14 Avenir Energie Heatpump
NO319461B1 (en) * 2003-06-20 2005-08-15 Foma Norge As Building kit for heat pump and pipe system for the same.
FR2871559A1 (en) * 2004-06-14 2005-12-16 Georges Favier COMPACT HEAT PUMP HEAT OF WATER / WATER TYPE
WO2008071419A2 (en) * 2006-12-14 2008-06-19 Siemens Aktiengesellschaft Refrigerator device refrigerator module for a refrigerator device and method for repairing a refrigerator device
EP2589884A3 (en) * 2011-08-26 2015-03-25 Panasonic Corporation Heat pump hot water apparatus
US20180142935A1 (en) * 2016-07-25 2018-05-24 Robert W. Jacobi Modular system for heating and/or cooling requirements
EP3438557A1 (en) * 2017-08-03 2019-02-06 Panasonic Intellectual Property Management Co., Ltd. Heat pump hot-water heater
DE102019001531A1 (en) * 2019-03-07 2020-09-10 Stiebel Eltron Gmbh & Co. Kg Heat pump device and control system for membrane expansion vessels
US11326830B2 (en) 2019-03-22 2022-05-10 Robert W. Jacobi Multiple module modular systems for refrigeration

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US3992896A (en) * 1973-08-22 1976-11-23 August Janson Air conditioning system
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1380800A1 (en) * 2002-07-12 2004-01-14 Avenir Energie Heatpump
FR2842288A1 (en) * 2002-07-12 2004-01-16 Avenir En HEAT PUMP
NO319461B1 (en) * 2003-06-20 2005-08-15 Foma Norge As Building kit for heat pump and pipe system for the same.
FR2871559A1 (en) * 2004-06-14 2005-12-16 Georges Favier COMPACT HEAT PUMP HEAT OF WATER / WATER TYPE
WO2006005832A1 (en) * 2004-06-14 2006-01-19 Horps, Michel Compact water/water heat pump core, and heat pump comprising same
CN100351590C (en) * 2004-06-14 2007-11-28 乔治·弗维埃 Central part of small water cyclic heat pump
WO2008071419A2 (en) * 2006-12-14 2008-06-19 Siemens Aktiengesellschaft Refrigerator device refrigerator module for a refrigerator device and method for repairing a refrigerator device
WO2008071419A3 (en) * 2006-12-14 2008-07-31 Glen Dimplex Deutschland Gmbh Refrigerator device refrigerator module for a refrigerator device and method for repairing a refrigerator device
EP2589884A3 (en) * 2011-08-26 2015-03-25 Panasonic Corporation Heat pump hot water apparatus
US20180142935A1 (en) * 2016-07-25 2018-05-24 Robert W. Jacobi Modular system for heating and/or cooling requirements
US20180363969A1 (en) * 2016-07-25 2018-12-20 Robert W. Jacobi Modular system for heating and/or cooling requirements
EP3488162A4 (en) * 2016-07-25 2020-07-15 Robert W. Jacobi Modular system for heating and/or cooling requirements
US11015854B2 (en) * 2016-07-25 2021-05-25 Jacobi Robert W Modular system for heating and/or cooling requirements
EP3438557A1 (en) * 2017-08-03 2019-02-06 Panasonic Intellectual Property Management Co., Ltd. Heat pump hot-water heater
DE102019001531A1 (en) * 2019-03-07 2020-09-10 Stiebel Eltron Gmbh & Co. Kg Heat pump device and control system for membrane expansion vessels
US11326830B2 (en) 2019-03-22 2022-05-10 Robert W. Jacobi Multiple module modular systems for refrigeration

Also Published As

Publication number Publication date
SE8903385L (en) 1991-04-14
SE8903385D0 (en) 1989-10-13

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