Classifications

• • 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
• • 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
  • F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
  • F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system

Definitions

• Thermal assembly with three fluids associating a heat recovery and transfer unit with a heating element.
• the invention relates to a thermal assembly with three fluids associating a heat recovery and transfer unit with a heating member.
• the products sold generally have only one primary recovery circuit, either from heated water, for example by solar collector, or from a flow of air carrying calories.
• the present invention aims first of all to ensure in a simple, rational and efficient manner, the possibility of using two calorie supply fluids and two receiving fluids, this in a single thermal assembly which is desired to be compact.
• the invention also relates to complete optimally a heat pump or, more generally, a recovery unit and calories transfer u ⁇ member heater incorporating I'deletingur condenser in the heating generator.
• the present invention has two main objectives: ⁇ significant improvement in the overall yield of the installation,. reducing the cost of the latter and its assembly.
• the invention uses a heat pump which draws from two supply fluids and transfers the calories into two receiving fluids.
• the invention relates to a thermal assembly with three fluids associating a heat recovery and transfer unit with a heating element characterized in that the evaporator and the condenser of the heat recovery and transfer unit are mixed exchangers with three fluids and in that the condenser exchanger constitutes the heating body of the heating member.
• Figure 1 is a schematic view showing the essential elements of the heat transfer recovery unit used in the present invention.
• Figure 2 is a schematic detail view showing the typical constitution of I exchanger with three fluids provided in each supply circuit or return of calories. .
• Figure 3 is a schematic view in longitudinal section showing an example of direct use of the heat recovery and transfer unit with extraction of calories in a flue.
• Figure 4 is a schematic detail view of an example of use where I exchanger, placed in a smoke duct, has a part in direct use for preheating the heating water.
• Figure 5 is a schematic sectional view of another example of use in the attic, in the case of controlled mechanical ventilation with solar panels.
• Figure 6 shows another use in the attic with solar air and water panels and heating by the SoI.
• FIG. 7 is the complete schematic representation of the thermal assembly for producing heat according to the invention.
• FIG. 8 is a perspective view of an exemplary embodiment of a condenser heater body with juxtaposed elements.
• Figure 9 is a cross-sectional view of an exemplary embodiment of a condenser heater body with coaxial structure. Referring to FIGS. 1 and 2, the refrigeration circuit 1 of the heat pump 2 is made up, in a conventional manner, of a compressor 3 and of a pressure reducer 4 between the evaporator 5 and the condenser 6.
• fins or plates 7 of the mixed return exchanger 8 are made integral with a high temperature receiver circuit 10 with circulation by pump 11 of a liquid heat transfer fluid, for example water, used directly for heating sanitary water or the heating of rooms and premises by radiant elements or convectors or for the heating of the ground after abolition in temperature.
• a liquid heat transfer fluid for example water
• the mixed return exchanger 8 is disposed in a channel 12 traversed by an air flow generated by the turbine 13. The air flow heated in contact with the fins
• the recovery and transfer assembly according to the invention has, in its basic version, a recovery or drawing circuit identical to the restitution circuit.
• M comprises the mixed recovery exchanger 9, secured in exchange contact with a supply circuit 14 with a liquid heat carrier fluid, for example water circulated by means of a circulation pump
• the recovery exchanger 9 is placed in a channel or a conduit 16 for the passage of a carrier air flow. calories such as, for example, extracted air, outside air, cellar air, air preheated by the sun, which comes out cooled by the action of a turbine 17.
• a first series of applications relates to the use in smoke evacuation conduits.
• the supply circuit could serve as a direct recovery circuit 19 due to the high temperatures of the fumes at the base of the flue evacuation duct supplied by the burner 20.
• the air intake In order to make recovery possible, the air intake must be closed off when the burner is not in use by an air intake flap 21 directly incorporated into the burner or annex, controlled for example by the call for air. with automatic return to the closed position in the case of a supply air burner.
• Another variant directly derived from that described above, consists in dividing the mixed exchanger 9 for recovery into a common part 22 with the evaporator and a part of a simple exchanger 23 with the water circuit 19 and the fumes .
• This portion of the exchanger will, of course, be located on the burner side.
• the heated water circuit 19 can be used to preheat the boiler water.
• the calories can be transferred through the heat pump to the ventilation circuit and the water heater.
• One of the simplest uses consists in connecting the recovery duct 16 with the air extraction circuit through the extraction vents 24 in a set of controlled mechanical ventilation while the intake duct 12 communicates with, on the one hand, the insufflation vents 25 and, on the other hand, with a supply source such as, for example, solar air collectors 26. It is planned, for the summer, an evacuation to the outside before insufflation at 27 or an insufflation of fresh air.
• the water return circuit supplies a water heater 29 or a heating installation in addition to another energy.
• recovery can also be coupled with solar water collectors 30, as shown in FIG. 6.
• the supply circuit will come from solar water and / or air collectors 26, 30 combined with any other source such as, for example, the water table or hot geothermal layers or, where appropriate, from an urban network. hot water.
• the recovery duct and / or the insufflation duct can be coupled to the superheated air solar collectors with or without suction of outside air or heated or superheated air by free supply in any location whatsoever. house.
• the thermal assembly for "producing heat according to the invention associates the heat pump 2 with a heating member with a hot water circuit 10, for example a boiler 34, for heating by radiators , high and low temperature convectors, ground network or any other and, if necessary, for the production of domestic hot water.
• a hot water circuit for example a boiler 34
• radiators high and low temperature convectors
• ground network or any other and, if necessary, for the production of domestic hot water.
• the boiler preferably has a burner
• the mixed exchanger 8 has three fluids simultaneously fulfilling the functions of heating body and condenser 6.
• This element combines in its one-piece exchange structure the condenser circuit of the refrigerant of the heat pump and the heating circuit 10 by hot water shown in dotted lines. It is placed in the combustion chamber so as to be crossed by the combustion gases in the manner of a conventional heating body.
• heating-condenser body 6 A new functional unit has thus been created inside a heat generator. This new unit, simultaneously fulfilling the functions of heating body and condenser, will be called hereinafter heating-condenser body 6.
• auxiliary heating generator the heating element containing it, operating only as an adjunct, will be referred to hereinafter as an auxiliary heating generator.
• the hot gases passing through the condenser heater body 6 are evacuated outside by the smoke box 36 followed by an isolation valve 37.
• the combustion gases can be condensed when passing through the evaporator to improve the combustion efficiency.
• a condensate collection tank 38 and an evacuation link are provided for this purpose.
• the evaporator is also arranged in the main flow of air drawn from the outside and / or extracted from the inside by the action of the fan 17.
• the evaporator thus dissociated could, in addition, recover part of the heat radiated by said flue.
• the evaporator then makes it possible to recover the calories contained in the air but also the calories carried away by the fumes.
• the condenser heater body may affect different possible forms of realization.
• FIG. 9 In addition to the tubular structure with fins shown diagrammatically in FIG. 9, a single-piece shape is illustrated, illustrated in FIG.
• FIG. 9 a version with horizontal coaxial tubes in which the refrigerant passes through a finned exchange structure 43 in the form of a central duct 44. Said duct is surrounded by a cylindrical envelope 45 thus constituting an annular intermediate volume 46 along which the water to be heated circulates. The path of the hot combustion gases is indicated by parallel arrows.
• FIG. 8 Another variant (FIG. 8) uses a heating body constituted by the juxtaposition of molded monoblock elements 47, for example made of cast iron or cast aluminum.
• This type of heating body is transformed by significantly increasing the dimensions of the lower or upper orifices of each element.
• the nipples are increased in the same proportions and we arrive at a perfect assembly.
• This modification makes it possible to create an additional exchange volume 48 of the distributor type, which will be occupied by the exchange circuit of the evaporator, for example in the form of a coil 49 in finned copper tube 50 opening onto a part. front shutter 51 by connection elements such as 52. The flow of heating water takes place at the opposite end. The water heated in each element will pass through the coil 49 to receive additional heating provided by the heat pump.
• the advantage of the invention lies in the fact that it is possible to use the boiler only as a backup. Indeed, the overall excellent performance of this installation makes it possible to envisage heating sequences of the burner which are relatively spaced apart and of short duration.
• Defrosting can be treated by reversing the cycle, by additional calorific back-up provided by the burner or by controlled air circulation of the condenser on the evaporator.
• the condenser heater body 6 acts as a simple exchanger.
• the auxiliary heating generator operates intermittently, the isolation valve closes after each period of operation.
• the combustion gases pass through the evaporator and condense there. The additional heat thus recovered is transferred to the condenser heater body.
• the auxiliary heating generator operates on its own like a conventional boiler, the fan is stopped and the fumes exit directly from the chimney.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Steam Or Hot-Water Central Heating Systems (AREA)

Applications Claiming Priority (4)

Publications (1)

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Family Applications (1)

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Family Cites Families (7)

• 1982
  • 1982-04-01 WO PCT/FR1982/000065 patent/WO1982003446A1/en unknown
  • 1982-04-01 EP EP82900968A patent/EP0075570A1/de not_active Withdrawn

Non-Patent Citations (1)

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