EP0069676B1 - Outside air water heatpump - Google Patents

Outside air water heatpump Download PDF

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Publication number
EP0069676B1
EP0069676B1 EP82401282A EP82401282A EP0069676B1 EP 0069676 B1 EP0069676 B1 EP 0069676B1 EP 82401282 A EP82401282 A EP 82401282A EP 82401282 A EP82401282 A EP 82401282A EP 0069676 B1 EP0069676 B1 EP 0069676B1
Authority
EP
European Patent Office
Prior art keywords
compressor
outside air
insulator
evaporator
condenser
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
EP82401282A
Other languages
German (de)
French (fr)
Other versions
EP0069676A1 (en
Inventor
Jacques Gouyou-Beauchamps
Joseph Kergueno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saunier Duval Eau Chaude Chauffage SDECC SA
Original Assignee
Saunier Duval Eau Chaude Chauffage SDECC SA
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 Saunier Duval Eau Chaude Chauffage SDECC SA filed Critical Saunier Duval Eau Chaude Chauffage SDECC SA
Publication of EP0069676A1 publication Critical patent/EP0069676A1/en
Application granted granted Critical
Publication of EP0069676B1 publication Critical patent/EP0069676B1/en
Expired legal-status Critical Current

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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
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • F24H4/04—Storage 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
    • F25B31/00—Compressor arrangements
    • F25B31/006—Cooling of compressor or motor

Definitions

  • the present invention relates to a heat pump of the type which draws calories from the outside air in order to transfer them to a temperature level higher than a heat transfer fluid intended for heating a dwelling.
  • the source of calories being constituted by the outside air
  • the whole of the heat pump is generally installed in compact form outside the housing, so that all the hot part i.e. the condenser and the compressor is cooled by the external atmosphere, which leads to unacceptable heat losses, in particular for devices such as heat pumps, which aim to save energy, and a significant drop in efficiency.
  • DE-A-2634482 one solution is to drown the compressor and the condenser in an insulating material and / or surround it with a closed insulating enclosure.
  • the latter solution also appears in DE-A-2 922 832.
  • GB-A-891 573 shows a compressor, a condenser and a pressure reducer immersed in an insulator.
  • Insulation by a closed insulating enclosure makes access to the compressor more difficult and causes the temperature of the aspirated vapors to rise.
  • this overheating on the compressor suction conditions the temperature of the discharge vapors of the refrigeration compressor, in particular when it is a hermetic type compressor.
  • refrigerants can give rise at high temperature to acids which attack the metal parts of the refrigerant circuit and cause either a blockage of the compressor or a destruction of the insulation of the windings of the electric drive motor.
  • a one-piece air-outdoor-water heat pump comprising a box 1 of generally parallelepipedal shape separated into two compartments A and B by a vertical partition 2.
  • compartment A In compartment A are mounted an evaporator 10 and a ventilation unit 11 while inside compartment B are arranged a compressor 12, a condenser 13, a pressure reducer 14, a water circulation pump not shown , and the various contacts and relays for controlling and regulating the heat pump.
  • the condenser 13 placed around and at the base of the compressor 12 is connected to the central heating water circuit of the housing by fittings 16.
  • the outside air sucked in through the evaporator 10 by the ventilation unit 11 gives up part of its calories to the refrigerant circulating in said evaporator.
  • the refrigerant in the gaseous state emerging from the evaporator via line 17, is introduced into the compressor 12. Then it is discharged at high pressure into the condenser 13 in which it condenses, the latent heat of condensation being transferred to water also circulating in the condenser 13 whose temperature rises.
  • the refrigerant Before returning to the evaporator 10 via line 18, the refrigerant is expanded in the expansion valve 14, then takes a diverted path 20 towards a cooler, not shown, placed in the oil at the base of the bell of the compressor 12 which allows it to cool and improve its performance while keeping the operating speed within acceptable limits.
  • the entire bottom of compartment B in which the condenser 13 and the regulator 14 are located is embedded in a granular insulator 19 for example polystyrene balls and / or cork particles.
  • the compressor 12 is only partially embedded in this insulator 19 so that its entire upper part is cooled by the outside air.
  • This arrangement therefore makes it possible to correctly isolate the hot part of the heat pump while ensuring normal cooling of the compressor and facilitating access to electrical appliances.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Description

La présente invention se rapporte à une pompe à chaleur du type prélevant des calories sur l'air extérieur dans le but de les transférer à un niveau de température supérieur à un fluide caloporteur destiné au chauffage d'un logement.The present invention relates to a heat pump of the type which draws calories from the outside air in order to transfer them to a temperature level higher than a heat transfer fluid intended for heating a dwelling.

On connait notamment par le DE-A-2634482 une pompe à chaleur avec un circuit fermé de fluide frigorigène sur le parcours duquel sont disposés un condenseur ou échangeur chaud, un compresseur, un détendeur et un évaporateur ou échangeur froid qui permettent de puiser des calories sur l'air extérieur et de les restituer à un fluide caloporteur. Le passage de l'air dans l'évaporateur est assuré par un groupe de ventilation. Les calories sont prélevées par évaporation du fluide frigorigène dans l'évaporateur et ensuite restituées à l'eau de chauffage par condensation dudit fluide frigorigène dans le condenseur.We know in particular from DE-A-2634482 a heat pump with a closed refrigerant circuit on the path of which are arranged a condenser or hot exchanger, a compressor, a pressure reducer and an evaporator or cold exchanger which allow to draw calories on the outside air and return them to a heat transfer fluid. The passage of air in the evaporator is ensured by a ventilation group. The calories are removed by evaporation of the refrigerant in the evaporator and then returned to the heating water by condensation of said refrigerant in the condenser.

La source de calories étant constituée par l'air extérieur, l'ensemble de la pompe à chaleur est généralement installé sous forme compacte à l'extérieur du logement, si bien que toute la partie chaude c'est-à-dire le condenseur et le compresseur est refroidie par l'ambiance extérieure ce qui entraine des pertes calorifiques inadmissibles notamment pour des appareils comme les pompes à chaleur qui ont pour but d'économiser l'énergie, et une chute importante du rendement.The source of calories being constituted by the outside air, the whole of the heat pump is generally installed in compact form outside the housing, so that all the hot part i.e. the condenser and the compressor is cooled by the external atmosphere, which leads to unacceptable heat losses, in particular for devices such as heat pumps, which aim to save energy, and a significant drop in efficiency.

Dans le DE-A-2634482, une solution consiste à noyer le compresseur et le condenseur dans une matière isolante et/ou l'entourer d'une enceinte fermée isolante. Cette dernière solution apparait également dans le DE-A-2 922 832. Le GB-A-891 573 montre un compresseur, un condenseur et un détendeur immergés dans un isolant.In DE-A-2634482, one solution is to drown the compressor and the condenser in an insulating material and / or surround it with a closed insulating enclosure. The latter solution also appears in DE-A-2 922 832. GB-A-891 573 shows a compressor, a condenser and a pressure reducer immersed in an insulator.

L'isolation par une enceinte fermée isolante rend l'accès du compresseur plus difficile et entraine une élévation de la température des vapeurs aspirées. Or, on sait que cette surchauffe à l'aspiration du compresseur conditionne la température des vapeurs de refoulement du compresseur frigorifique, en particulier lorsqu'il s'agit d'un compresseur de type hermétique. En effet, les fluides frigorigènes peuvent donner naissance à température élevée à des acides qui attaquent les parties métalliques du circuit frigorigène et entrainent soit un blocage du compresseur, soit une destruction de l'isolant des bobinages du moteur électrique d'entrainement.Insulation by a closed insulating enclosure makes access to the compressor more difficult and causes the temperature of the aspirated vapors to rise. However, it is known that this overheating on the compressor suction conditions the temperature of the discharge vapors of the refrigeration compressor, in particular when it is a hermetic type compressor. In fact, refrigerants can give rise at high temperature to acids which attack the metal parts of the refrigerant circuit and cause either a blockage of the compressor or a destruction of the insulation of the windings of the electric drive motor.

L'autre solution qui consiste à noyer le compresseur et le condenseur dans une matière isolante présente aussi des inconvénients, notamment en ce qui concerne, les risques d'élévation de température des vapeurs aspirées, l'accessibilité au compresseur et à ses accessoires, et la mise en place commode de cette matière isolante.The other solution which consists in embedding the compressor and the condenser in an insulating material also has drawbacks, in particular as regards, the risks of temperature rise of the sucked vapors, accessibility to the compressor and its accessories, and convenient placement of this insulating material.

L'invention permet d'éviter les inconvénients propres aux solutions connues par le fait que le compresseur n'est que partiellement noyé dans un isolant et que cet isolant est constitué de particules granulaires comme des billes de polystyrène et/ou des particules de liège, qui permettent un remplissage complet et facile, donc une bonne isolation, qui laissent accessibles le haut du compresseur, et favorisent son refroidissement. D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement dans la description suivante en référence à la figure unique qui représente:

  • - une vue schématique en perspective écorchée de la pompe à chaleur.
The invention makes it possible to avoid the drawbacks specific to known solutions by the fact that the compressor is only partially embedded in an insulator and that this insulator consists of granular particles such as polystyrene beads and / or cork particles, which allow complete and easy filling, therefore good insulation, which leaves the top of the compressor accessible, and promotes its cooling. Other characteristics and advantages of the invention will appear more clearly in the following description with reference to the single figure which represents:
  • - a schematic perspective view of the heat pump.

En se reportant à la figure unique, on a représenté une pompe à chaleur airextérieur-eau monobloc comprenant un caisson 1 de forme générale parallélépipédique séparé en deux compartiments A et B par une cloison verticale 2.Referring to the single figure, there is shown a one-piece air-outdoor-water heat pump comprising a box 1 of generally parallelepipedal shape separated into two compartments A and B by a vertical partition 2.

Dans le compartiment A sont montés un évaporateur 10 et un groupe de ventilation 11 tandis qu'à l'intérieur du compartiment B, sont disposés un compresseur 12, un condenseur 13, un détendeur 14, une pompe de circulation de l'eau non représentée, et les différents contacts et relais de commande et de régulation de la pompe à chaleur. Le condenseur 13 disposé autour et à la base du compresseur 12 est raccordé au circuit eau de chauffage central du logement par des raccords 16.In compartment A are mounted an evaporator 10 and a ventilation unit 11 while inside compartment B are arranged a compressor 12, a condenser 13, a pressure reducer 14, a water circulation pump not shown , and the various contacts and relays for controlling and regulating the heat pump. The condenser 13 placed around and at the base of the compressor 12 is connected to the central heating water circuit of the housing by fittings 16.

L'air extérieur aspiré à travers l'évaporateur 10 par le groupe de ventilation 11 cède une partie de ses calories au fluide frigorigène en circulation dans ledit évaporateur. Le fluide frigorigène à l'état gazeux débouchant de l'évaporateur par la conduite 17, est introduit dans le compresseur 12. Ensuite il est refoulé à haute pression dans le condenseur 13 dans lequel il se condense, la chaleur latente de condensation étant transférée à de l'eau également en circulation dans le condenseur 13 dont la température s'élève. Avant son retour dans l'évaporateur 10 par la conduite 18, le fluide frigorigène est détendu dans le détendeur 14, puis emprunte un parcours détourné 20 vers un refroidisseur, non représenté, disposé dans l'huile à la base de la cloche du compresseur 12 ce qui permet de le refroidir et d'améliorer son rendement tout en maintenant le régime de fonctionnement dans des limites acceptables.The outside air sucked in through the evaporator 10 by the ventilation unit 11 gives up part of its calories to the refrigerant circulating in said evaporator. The refrigerant in the gaseous state emerging from the evaporator via line 17, is introduced into the compressor 12. Then it is discharged at high pressure into the condenser 13 in which it condenses, the latent heat of condensation being transferred to water also circulating in the condenser 13 whose temperature rises. Before returning to the evaporator 10 via line 18, the refrigerant is expanded in the expansion valve 14, then takes a diverted path 20 towards a cooler, not shown, placed in the oil at the base of the bell of the compressor 12 which allows it to cool and improve its performance while keeping the operating speed within acceptable limits.

Afin d'éviter des pertes calorifiques importantes notamment au niveau de la partie chaude de la pompe à chaleur, tout le fond du compartiment B dans lequel sont situés le condenseur 13 et le détendeur 14 est noyé un isolant granulaire 19 par exemple des billes de polystyrène et/ou des particules de liège. Par contre le compresseur 12 n'est que partiellement noyé dans cet isolant 19 de telle manière que toute sa partie supérieure soit refroidie par l'air extérieur.In order to avoid significant heat losses, in particular at the level of the hot part of the heat pump, the entire bottom of compartment B in which the condenser 13 and the regulator 14 are located is embedded in a granular insulator 19 for example polystyrene balls and / or cork particles. On the other hand, the compressor 12 is only partially embedded in this insulator 19 so that its entire upper part is cooled by the outside air.

Cette disposition permet donc d'isoler correctement la partie chaude de la pompe à chaleur tout en assurant le refroidissement normal du compresseur et en facilitant l'accès aux appareils électriques.This arrangement therefore makes it possible to correctly isolate the hot part of the heat pump while ensuring normal cooling of the compressor and facilitating access to electrical appliances.

Claims (1)

  1. Heat pump of the type taking calories from the outside air and comprising a box within which are disposed to one side an evaporator (10) and a ventilation unit (11) and to the other side, submerged in an insulator, a condensor (13) coaxial with a compressor (12) itself provided with an oil through which an expanded refrigerant liquid passes, as well as an expander (14), characterized by the fact that in order for the upper part of the compressor (12) to be cooled by the external environment, the compressor is only partially submerged in insulator (19) constituting granular particles such as for example balls of polystyrene and/or particles of cork.
EP82401282A 1981-07-08 1982-07-07 Outside air water heatpump Expired EP0069676B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8113388 1981-07-08
FR8113388A FR2509442B1 (en) 1981-07-08 1981-07-08 AIR-OUTDOOR-WATER HEAT PUMP

Publications (2)

Publication Number Publication Date
EP0069676A1 EP0069676A1 (en) 1983-01-12
EP0069676B1 true EP0069676B1 (en) 1985-07-31

Family

ID=9260331

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401282A Expired EP0069676B1 (en) 1981-07-08 1982-07-07 Outside air water heatpump

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EP (1) EP0069676B1 (en)
DE (1) DE3265072D1 (en)
ES (1) ES8308033A1 (en)
FR (1) FR2509442B1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT8618003V0 (en) * 1986-05-21 1986-05-21 Teti Alessandro E Teti Nicola SYSTEM FOR THE PRODUCTION OF SANITARY WATER FOR DOMESTIC USE WHICH INTEGRALLY REPLACES THE RESISTANCE OF COMMON ELECTRIC WATER HEATERS, WITH THE TOTAL REUSE OF THE SAME; ITS USE ALLOWS A CONSIDERABLE SAVING OF COSTS IN COSTS OF COSTS
DE3705795A1 (en) * 1986-11-29 1988-06-09 Sueleyman Kayhan Akdogan REFRIGERATIONAL PLANT
FR2669716A1 (en) * 1990-11-28 1992-05-29 Sofath Heat pump contained in an insulated casing
CH684122A5 (en) * 1992-10-08 1994-07-15 Hans Goessi Charging device for storage and boiler in heating and hot water systems.
US5802864A (en) * 1997-04-01 1998-09-08 Peregrine Industries, Inc. Heat transfer system
DE102007010139B4 (en) * 2007-02-28 2021-02-11 Stiebel Eltron Gmbh & Co. Kg Heat pump device
JPWO2019167136A1 (en) * 2018-02-27 2020-08-06 三菱電機株式会社 Heat pump device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB891573A (en) * 1960-05-31 1962-03-14 Heat Pump & Refrigeration Ltd Improvements in or relating to heat pump systems

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR322773A (en) * 1902-07-04 1903-02-12 Heinel Carl Method and apparatus for cooling the compression cylinder of refrigerating machines
DE934361C (en) * 1943-04-09 1955-10-20 Siemens Ag Heating system with heat pump
US2667763A (en) * 1950-09-29 1954-02-02 Int Harvester Co Cooling means for motor compressor units
DE2634482A1 (en) * 1976-07-31 1978-02-02 Goetzewerke Compact heat pump for warming small swimming pool - has coaxial condenser wound spirally round compressor
DE2707859A1 (en) * 1977-02-24 1978-08-31 Licentia Gmbh REFRIGERATOR OR FREEZER
DE2922832A1 (en) * 1979-06-05 1980-12-11 Lth Tozd Z Za Hlajenje In Klim CONDENSING UNIT FOR A HEAT PUMP
FR2474149A1 (en) * 1980-01-22 1981-07-24 Sdecc Recuperation of heat from heat pump compressor - uses heat exchanger in oil sump to heat ventilator refrigerant

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB891573A (en) * 1960-05-31 1962-03-14 Heat Pump & Refrigeration Ltd Improvements in or relating to heat pump systems

Also Published As

Publication number Publication date
ES513729A0 (en) 1983-09-01
DE3265072D1 (en) 1985-09-05
FR2509442A1 (en) 1983-01-14
FR2509442B1 (en) 1986-03-07
ES8308033A1 (en) 1983-09-01
EP0069676A1 (en) 1983-01-12

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