US20080196872A1 - Compact Water/Water Heat Pump Core, and Heat Pump Comprising Same - Google Patents

Compact Water/Water Heat Pump Core, and Heat Pump Comprising Same Download PDF

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Publication number
US20080196872A1
US20080196872A1 US11/629,508 US62950805A US2008196872A1 US 20080196872 A1 US20080196872 A1 US 20080196872A1 US 62950805 A US62950805 A US 62950805A US 2008196872 A1 US2008196872 A1 US 2008196872A1
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US
United States
Prior art keywords
heat pump
exchangers
loop
pump core
harnessing
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.)
Abandoned
Application number
US11/629,508
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English (en)
Inventor
Georges Favier
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.)
FESSART PHILIPPE
Original Assignee
FESSART PHILIPPE
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 FESSART PHILIPPE filed Critical FESSART PHILIPPE
Assigned to FAVIER, GEORGES, FESSART, PHILIPPE, HORPS, MICHEL reassignment FAVIER, GEORGES ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FAVIER, GEORGES
Publication of US20080196872A1 publication Critical patent/US20080196872A1/en
Abandoned 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
    • 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

Definitions

  • the invention is related to water loop heat pumps.
  • Such equipment allows to harness thermal energy available in air, earth upper layers or free water, concentrate this energy and supply it in this form (at higher temperature) to hot water central heating.
  • Water loop heat pump means an equipment in which the harnessing loop as well as the heating loop are both filled by a liquid. It differs from “water/air” or “air/air” equipments. It must be considered that, following need, the water can be replaced or completed by an other liquid. For instance, in the harnessing loop. To the water in this loop, ethylene-glycol or other additive is most often added as antifreeze.
  • a heat pump is composed of a compressor assembly and two heat exchangers linked one to the harnessing loop and the other one to the heating loop.
  • the exchangers are, on the other side, linked to the compressor assembly, one to its hot point and the other one to its cold point.
  • Inside the compressor assembly is found a condenser, an expander and a vaporiser.
  • the compressor concentrates the harnessed energy at the condenser side and disperses its cold into the harnessing loop at the vaporiser side.
  • the overall performance of the heat pump is best when thermal exchange is optimised and action of the compressor and exchangers is conducted in best possible thermal insulation from external atmosphere.
  • the compressor, its internal cooling gas, as well as the two heat exchangers, are linked into a one and same functional assembly, hereunder expressed as “water loop heat pump core”.
  • This assembly forms a set that is in turn linked to manifolds for the harnessing and the heating (pipes, circulating pumps, thermal captors, etc.) as well as to supplies and regulation of the whole system.
  • the heat pumps supplied up to now are formed with internal connections by piping that is performed by methods usual to technicians specialised in cooling and heating equipment.
  • brass is characterized by a high thermal conductivity, which is not favourable in this application since it can result in parasitic thermal exchanges with environment.
  • brazing consists in assembling two different metals by the mean of a third one (silver for instance when performance is requested) heated up to above its fusion point. Since compressor are made of steel and the exchangers of steel or stainless steel, and these parts linked by brass pipes, in all brazed links are observed changes of metal:steel/brass or stainless steel/brass, and third metal in addition.
  • brass pipes are usually designed in order that suppleness is granted in the manifold. This is obtained by the use of pipes of greater length and/or of adapted geometry (lyres, spires, etc.) that absorb mechanical stress, mostly the transfers of vibrations.
  • the present invention aims to overcome these drawbacks, by introducing a water loop heat pump core optimised in performance as in compactness and reliability.
  • the water loop heat pump core of the invention follows the general description above, that is including, more precisely and in a way known in itself: a compressor assembly including a close circuit filled with cooling gas with compressor, condenser, expander and vaporiser; inlet and outlet on the hot side, inlet and outlet on the cold side; a first exchanger coupled by its primary side to the vaporiser of the compressor assembly and by its secondary side to the harnessing loop; and a second exchanger coupled by its primary side to the condenser of the compressor assembly and by its secondary side to the heating loop.
  • the linking pipes between the exchangers and the compressor assembly, and/or the linking pipes between the exchangers and the inlets/outlets to and from harnessing and heating loops are non-brazed linking pipes, made from welded stainless steel pipes.
  • the links in the water loop heat pump core of the invention do not present solution of continuity any more, that introduces a quality in mechanical resistance—notably to vibrations—and a quality in resistance to corrosion incomparably higher to what they used to be with brass tubes and brazing.
  • the vibrations emitted by the compressor cannot introduce breakage of such links, and the mechanical strength, the geometry and the suppleness of the stainless steel pipes and exchangers can be designed in order to absorb such vibrations in short and small diameter circuits, all that being impossible to brass tubes used up to now.
  • orbital TIG welding a perfectly mastered process that can be automated, thus with a precise control of the necessary parameters and an excellent reproducibility, leading here again to increase the reliability of the equipment.
  • orbital TIG welding allows to keep down the temperature increase of the compressor body during the process of welding, thus avoiding to weaken it.
  • the exchangers will preferably be stainless steel tubular exchangers.
  • Such exchangers perfectly fitted to a heat pump core following the invention in which all links are welded stainless steel pipes, may advantageously replace plate exchangers assembled by brazing, which are most often used in standard heat pumps. Even if they grant a good thermal exchange, plate exchangers are fragile and more sensible to water loaded with minerals that can introduce blockages by deposition or introduction of impurities. Last, their mechanical strength is limited, especially when exposed to continual vibrations.
  • This tighten enclosure can favourably be composed of a supporting base receiving the compressor assembly and pipe-links to the exchangers, and a bonnet covering them, the supporting base and the bonnet being joined in a manner that is permanent, for instance by welding if they are of metal.
  • supporting base may form whole or a part of any side or of certain sides of the assembly, not only the lower part thereof.
  • the remaining free space inside the enclosure can be filled by an isolating material, the supporting base being then equipped by an appropriate occlusive aperture to introduce this isolating material.
  • Vacuum can be applied to the internal atmosphere of the enclosure, or it can be filled by appropriate dry isolating gas, the supporting base being then equipped by an appropriate occlusive aperture, opening to this atmosphere, in order to apply vacuum or introduce the gas.
  • the inlets and outlets of the harnessing loop and the heating loop, as well as the occlusive apertures are all grouped on the supporting base.
  • the invention shall also encompass, as such, a heat pump including, in combination, a pump heart as set forth above which co-operates with coupling members, including at least one circulating pump, to a harnessing loop, coupling members, including at least one circulating pump, to a heating loop, thermal regulating means, and means for supplying electricity to the assembly.
  • a heat pump including, in combination, a pump heart as set forth above which co-operates with coupling members, including at least one circulating pump, to a harnessing loop, coupling members, including at least one circulating pump, to a heating loop, thermal regulating means, and means for supplying electricity to the assembly.
  • the reference 10 shows the compressor assembly, that is a set with close circuit filled by gas, including a compressor 11 , a vaporiser 12 , a condenser 13 and an expander 14 .
  • the motor of the compressor is, for instance, an electric motor powered by a line coming from outside the enclosure and linked to public electric network.
  • a first heat exchanger 20 is coupled on its primary side to vaporiser 12 of the compressor assembly 10 , through two links 21 and 22 . On its secondary side, it is linked to inlet 23 and outlet 24 to be in turn linked to a harnessing loop; links to openings 23 , 24 are insured by pipes 25 , 26 .
  • a second heat exchanger 30 is coupled on its primary side to the condenser 13 of the compressor assembly 10 through two links 31 and 32 .
  • the exchangers 20 and 30 are favourably stainless steel welded tubular twisted exchangers, the size of which is designed according to the compressor nominal power in order that they grant optimum exchange both to the heating and from the harnessing, loops.
  • the links 21 , 22 , 31 , 32 between the compressor 10 and the heat exchangers 20 and 30 , as well as the links 25 , 26 , 35 , 36 between the exchangers 20 and 30 and inlets 23 , 33 and outlets 24 , 34 , to and from the harnessing and the heating loops are insured by means of welded stainless steel pipes.
  • the diameter of these pipes is optimised in order that this link, without perturbing the transfer of fluids (gas, or fluid circulating in the loops), with a length and a geometry designed to perform this link by the shortest possible way.
  • the exchangers can be merely supported by the pipes 21 , 22 , 25 , 26 (or 31 , 32 , 35 , 36 , on the other side), that keep them in place without necessity of holder of any sort attached to a frame that would generate thermal bridges.
  • a small diameter pipe 16 that can be of stainless steel as well, in spiral or multi-spiral form, allows the filling of the compressor by its gas and the control of this filling. Outside the enclosure, this stainless steel pipe could be prolonged by a brass tube allowing connection to the gas tank by using methods usual to cooling technicians.
  • Constituting parts of the water loop heat pump core as just described are grouped inside an enclosure 40 itself built of two parts: a supporting base 41 and a bonnet 42 .
  • all useful inlets and outlets and all accesses to the parts of the heat pump core are grouped on the supporting base 41 , notably inlets 23 , 33 and outlets 24 , 34 to and from harnessing and heating loops.
  • the crossing 43 for the electric line feeding the motor of the compressor 11 are also located on the supporting base 41 , the crossing 43 for the electric line feeding the motor of the compressor 11 , as well as an occlusive aperture allowing communication with the internal free volume of the enclosure when the bonnet 42 is closed, and a crossing 45 for the tube 16 to introduce or control the gas of the compressor.
  • the supporting base extends across the whole lower part of the assembly. However it may as well extend across whole or a part of any side or of certain sides of the assembly, according to the needs when designing the heat pump.
  • the bonnet 42 can thus easily be tighten, since it is of one piece only, for instance of thin metal, without any crossing. It can be sealed tighten to the supporting base 41 in order to form a tighten enclosure around the heat pump core.
  • this sealing can even favourably be performed by welding of these two parts together presenting then an un-dissociable functional unit.
  • Other means of permanent sealing can be considered, for instance by gluing, when bonnet and/or supporting base are not of metal possibly welded.
  • an isolating material that fill all the internal free volume of the enclosure, for instance appropriate powder or expanding foam, that will minimise parasitic thermal exchanges and thus increase the performance of the equipment. Moreover, this filling reduces the transmission of mechanical and acoustic vibrations from the compressor to outside.
  • vacuum can be applied to the tighten enclosure or it can be filled by a dry gas bringing thermal insulation better than air, for instance argon or sulphur hexafluoride.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Central Heating Systems (AREA)
US11/629,508 2004-06-14 2005-05-30 Compact Water/Water Heat Pump Core, and Heat Pump Comprising Same Abandoned US20080196872A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0406398 2004-06-14
FR0406398A FR2871559B1 (fr) 2004-06-14 2004-06-14 Coeur de pompe a chaleur compact de type eau/eau
PCT/FR2005/001323 WO2006005832A1 (fr) 2004-06-14 2005-05-30 Coeur de pompe a chaleur compact de type eau/eau, et pompe a chaleur comportant un tel coeur de pompe

Publications (1)

Publication Number Publication Date
US20080196872A1 true US20080196872A1 (en) 2008-08-21

Family

ID=34946198

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/629,508 Abandoned US20080196872A1 (en) 2004-06-14 2005-05-30 Compact Water/Water Heat Pump Core, and Heat Pump Comprising Same

Country Status (11)

Country Link
US (1) US20080196872A1 (fr)
EP (1) EP1766301B1 (fr)
CN (1) CN100351590C (fr)
AT (1) ATE420328T1 (fr)
CA (1) CA2569914A1 (fr)
DE (1) DE602005012270D1 (fr)
DK (1) DK1766301T3 (fr)
ES (1) ES2321316T3 (fr)
FR (1) FR2871559B1 (fr)
PL (1) PL1766301T3 (fr)
WO (1) WO2006005832A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100326373A1 (en) * 2009-06-30 2010-12-30 9223-5183 Quebec Inc. Boiler with improved hot gas passages
US20140230781A1 (en) * 2013-02-19 2014-08-21 Ford Global Technologies, Llc Charge motion control valve and intake runner system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007010139B4 (de) * 2007-02-28 2021-02-11 Stiebel Eltron Gmbh & Co. Kg Wärmepumpenvorrichtung
EP3318821B1 (fr) * 2015-07-03 2023-01-18 Mitsubishi Electric Corporation Dispositif de pompe à chaleur

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475920A (en) * 1968-05-06 1969-11-04 Gen Motors Corp Keeping insulation dry
US4843832A (en) * 1987-03-12 1989-07-04 Takenaka Komuten Co., Ltd. Air conditioning system for buildings
US5080325A (en) * 1990-11-14 1992-01-14 Air Products And Chemicals, Inc. Corrosion resistant stainless steel valve or fitting
US5299731A (en) * 1993-02-22 1994-04-05 L'air Liquide Corrosion resistant welding of stainless steel
US5642622A (en) * 1995-08-17 1997-07-01 Sunpower, Inc. Refrigerator with interior mounted heat pump
US6634182B2 (en) * 1999-09-17 2003-10-21 Hitachi, Ltd. Ammonia refrigerator
US20030234099A1 (en) * 2002-06-21 2003-12-25 Mota Multi-tube heat exchangers, and a method of manufacturing such heat exchangers

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2842893A1 (de) * 1978-10-02 1980-04-17 Kueppersbusch Waermepumpenheizungssystem
DE3007675A1 (de) * 1980-02-29 1981-09-10 Al-Ko Polar Gmbh Maschinenfabrik, 8876 Jettingen-Scheppach Waermepumpe
FR2546281B1 (fr) * 1983-05-18 1990-04-06 Fonderie Soc Gen De Element de circuit de fluide, pompe a chaleur le comprenant, et son procede de fabrication
SE8903385L (sv) * 1989-10-13 1991-04-14 Ivt Ind Vaermepumpanlaeggning med koeldmediekretsen anordnad som en utbytbar enhet samt anordning foer genomfoerande av enhetsbyte
US5396039A (en) * 1993-11-24 1995-03-07 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for assembling piping or components by TIG welding
DE19711621A1 (de) * 1997-03-20 1998-09-24 Emerson Electric Gmbh Druckdichtes Gehäuse und Verfahren zu seiner Herstellung
DE19820818C2 (de) * 1998-05-09 2002-12-05 Viessmann Werke Kg Wärmepumpe
JP2002107010A (ja) * 2000-09-29 2002-04-10 Fuji Koki Corp レシーバドライヤ

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475920A (en) * 1968-05-06 1969-11-04 Gen Motors Corp Keeping insulation dry
US4843832A (en) * 1987-03-12 1989-07-04 Takenaka Komuten Co., Ltd. Air conditioning system for buildings
US5080325A (en) * 1990-11-14 1992-01-14 Air Products And Chemicals, Inc. Corrosion resistant stainless steel valve or fitting
US5299731A (en) * 1993-02-22 1994-04-05 L'air Liquide Corrosion resistant welding of stainless steel
US5642622A (en) * 1995-08-17 1997-07-01 Sunpower, Inc. Refrigerator with interior mounted heat pump
US6634182B2 (en) * 1999-09-17 2003-10-21 Hitachi, Ltd. Ammonia refrigerator
US20030234099A1 (en) * 2002-06-21 2003-12-25 Mota Multi-tube heat exchangers, and a method of manufacturing such heat exchangers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100326373A1 (en) * 2009-06-30 2010-12-30 9223-5183 Quebec Inc. Boiler with improved hot gas passages
US9404650B2 (en) * 2009-06-30 2016-08-02 M. Alexandre Lapierre Boiler with improved hot gas passages
US20140230781A1 (en) * 2013-02-19 2014-08-21 Ford Global Technologies, Llc Charge motion control valve and intake runner system
US10428745B2 (en) * 2013-02-19 2019-10-01 Ford Global Technologies, Llc Charge motion control valve and intake runner system

Also Published As

Publication number Publication date
PL1766301T3 (pl) 2009-06-30
FR2871559A1 (fr) 2005-12-16
EP1766301B1 (fr) 2009-01-07
CA2569914A1 (fr) 2006-01-19
ATE420328T1 (de) 2009-01-15
DE602005012270D1 (de) 2009-02-26
EP1766301A1 (fr) 2007-03-28
ES2321316T3 (es) 2009-06-04
CN100351590C (zh) 2007-11-28
CN1712866A (zh) 2005-12-28
DK1766301T3 (da) 2009-05-11
FR2871559B1 (fr) 2006-09-22
WO2006005832A1 (fr) 2006-01-19

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AS Assignment

Owner name: FAVIER, GEORGES, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FAVIER, GEORGES;REEL/FRAME:020253/0785

Effective date: 20070105

Owner name: HORPS, MICHEL, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FAVIER, GEORGES;REEL/FRAME:020253/0785

Effective date: 20070105

Owner name: FESSART, PHILIPPE, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FAVIER, GEORGES;REEL/FRAME:020253/0785

Effective date: 20070105

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION