CN100365357C - Heat pump and structure of extraction heat exchanger thereof - Google Patents
Heat pump and structure of extraction heat exchanger thereof Download PDFInfo
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- CN100365357C CN100365357C CNB2005101197516A CN200510119751A CN100365357C CN 100365357 C CN100365357 C CN 100365357C CN B2005101197516 A CNB2005101197516 A CN B2005101197516A CN 200510119751 A CN200510119751 A CN 200510119751A CN 100365357 C CN100365357 C CN 100365357C
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- 238000000605 extraction Methods 0.000 title claims abstract description 62
- 239000003507 refrigerant Substances 0.000 claims abstract description 93
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 210000005239 tubule Anatomy 0.000 claims description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 230000006837 decompression Effects 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 239000013526 supercooled liquid Substances 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000008020 evaporation Effects 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 239000000284 extract Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000007906 compression Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000004781 supercooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000001361 achilles tendon Anatomy 0.000 description 1
- IXSZQYVWNJNRAL-UHFFFAOYSA-N etoxazole Chemical compound CCOC1=CC(C(C)(C)C)=CC=C1C1N=C(C=2C(=CC=CC=2F)F)OC1 IXSZQYVWNJNRAL-UHFFFAOYSA-N 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
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- 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
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- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
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- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/05—Cost reduction
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/31—Low ambient temperatures
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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)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A heat pump equipped with an extraction heat exchanger includes a compressor (10) sucking low-temperature-and-low-pressure gaseous refrigerant, and compressing and discharging the low-temperature-and-low-pressure gaseous refrigerant into high-temperature-and-high-pressure gaseous refrigerant, a condenser (20) in which air passing therethrough absorbs heat from the gaseous refrigerant to liquefy the gaseous refrigerant, an evaporator (30) in which refrigerant absorbs heat from indoor air and is evaporated to cool indoor air, a main electronic expansion valve (40) connected between the condenser (20) and the evaporator (30) to decompress the liquid refrigerant liquefied in the condenser (20) such that the decompressed refrigerant is easily evaporated in the evaporator (30) and flows at a predetermined flow rate; and the extraction heat exchanger branching a part of the high-temperature-and-high-pressure liquid refrigerant, and performing and bypassing heat exchange between high-temperature-and-high-pressure super-cooled liquid refrigerant and high-temperature-and-high-pressure refrigerant passing through a heat exchanging refrigerant tube (51) between the condenser (20) and the main electronic expansion valve (40) to an accumulator (11).
Description
Technical field
The present invention relates to a kind of structure and loop control that is equipped with heat pump and this structure of extraction heat exchanger of structure of extraction heat exchanger.
Background technology
In the prior art, because be difficult to guarantee the thermal source of low temperature side in the cold weather, because the driving that high compression ratio and frosting cause loss, and the aridity that the cold-producing medium flash causes increases, thereby is difficult to the operation heat pump.Usually this there is various solution, also,, uses transverter to come pondage, and be equipped with electronic heater, perhaps replenish not enough heat in order to overcome the problems referred to above; In order to overcome high compression ratio, adopt the secondary pressure texture, perhaps adopt the compressor of unconventional manufacturing, make subcooled cold-producing medium enter middle nip in this compressor reducer, and use various heat exchangers to improve service behaviour under the cold weather.But because said method has the high and baroque shortcoming of cost, it is overheated unbalanced that nearest technology uses transverter and electric expansion valve accurately to regulate, and the increase capacity.
In addition, although under the situation of using transverter, not enough heat can obtain from low-temperature heat source,, by increasing the frequency of transverter under the heating mode, replenishes the thermal capacity of shortage that is,, this will reduce the efficient of system.
In addition, under heating mode, when replenishing not enough heat by the overload operation of electronic heater and transverter, efficient is lowered, and because used capacity to change for example transverter of equipment, makes manufacturing cost increase.In addition, in existing economizer, owing to carried out inconsistent capacity regulating, there is the risk of steam induction, and overheatedly unbalancedly will exceeds predetermined value, make compressor reducer to catch fire.
Especially, in the two stages of compression circulation, though used two compressors, perhaps use the compressor reducer of a unconventional manufacturing so that the cold-producing medium experience heat exchange of extracting and be drained into the higher-pressure region and low-pressure area between middle nip, but owing to want unconventional manufacturing, the compressor reducer of this unconventional manufacturing can not be realized a large amount of productions.In addition, because pipe is thin, the distribution of turnover rate is not uniformly, and is difficult to realize accurate control when using magnetic valve, thereby is difficult to keep consistent operation.
Summary of the invention
Consider the above-mentioned of prior art existence and/or other problem, the technical problem that the present invention will solve provides a kind of heat pump that is equipped with structure of extraction heat exchanger, is used for extracting the cold excessively liquid refrigerant of a part from the outlet of condenser; Be used for obtaining a part of evaporation heat, thereby reduce the load that causes owing to evaporation heat by described structure of extraction heat exchanger; Be used to increase the proper mass of cold-producing medium, to use the compressor of constant speed; Be used to move the high efficiency heat pump, have outstanding heating properties, can carry out multi-stage compression simultaneously; And be used for suitably regulating the quality that extracts steam, thereby can keep best service condition based on control by electric expansion valve according to the variations in temperature of outdoor air.
Another technical problem that the present invention will solve provides a kind of structure of extraction heat exchanger that is used for heat pump, can based on the capacity increase of heat pump, change the quantity of tubule by considering the even distribution of cold-producing medium and reducing of pressure.
In order to solve first above-mentioned technical problem, the technical scheme that the present invention takes is: a kind of heat pump that is equipped with structure of extraction heat exchanger is provided, comprises: compressor, the low-temperature low-pressure refrigerant that is used for extracting are compressed into high-temperature high-pressure refrigerant and discharge; The heat of the high-temperature high-pressure refrigerant that condenser, the absorption of air of passing through within it enter from described compressor is with described high-temperature high-pressure refrigerant liquefaction; Evaporimeter, cold-producing medium within it absorb heat and are evaporated from room air, the cooling room air; Main electric expansion valve is connected between described condenser and the described evaporimeter, and the high pressure liquid refrigerant that described condenser is discharged reduces pressure; Structure of extraction heat exchanger, described structure of extraction heat exchanger comprise that both sides divide the heat exchange refrigerant pipe be connected with the economizer of first arm and second arm in addition, pass described economizer inside from two ends, are installed in the injection electric expansion valve on described first arm; Described first arm will and enter in the described economizer after described injection electric expansion valve decompression from the liquid cold-producing medium shunting of a part of HTHP that described condenser is discharged; Described heat exchange refrigerant pipe is connected between described condenser and the described main electric expansion valve, to carry out heat exchange from the part of refrigerant of the described shunting in the liquid cold-producing medium of the HTHP that described condenser is discharged and the described economizer of flowing through, enter described main electric expansion valve then; Described second arm is expelled to the cold-producing medium through the described shunting after the heat exchange in the described economizer in the reservoir.
Described heat exchange refrigerant pipe is made up of the capillary that wriggles, thereby increases the heat exchange surface in the described economizer.Perhaps, described heat exchange refrigerant pipe comprises a plurality of tubules that are arranged in parallel.
In order to solve second above-mentioned technical problem, the technical scheme that the present invention takes is: the structure of extraction heat exchanger that proposes a kind of heat pump, wherein said heat pump comprises compressor reducer, condenser, evaporimeter, main electric expansion valve, described structure of extraction heat exchanger is used for the liquid cold-producing medium shunting of a part of HTHP of discharging from described condenser, and carry out heat exchange between the HTHP sub-cooled liquid refrigerant distribute and the high-temperature high-pressure refrigerant that is discharged to described main electric expansion valve from described condenser, cold-producing medium with described shunting is diverted in the reservoir then, and described structure of extraction heat exchanger comprises that both sides are connected with the economizer of first arm and second arm respectively, pass the heat exchange refrigerant pipe of described economizer inside from two ends, be installed in the injection electric expansion valve on described first arm; Described first arm will and enter in the described economizer after described injection electric expansion valve decompression from the liquid cold-producing medium shunting of a part of HTHP that described condenser is discharged; Described heat exchange refrigerant pipe is connected between described condenser and the described main electric expansion valve, to carry out heat exchange from the part of refrigerant of the described shunting in the liquid cold-producing medium of the HTHP that described condenser is discharged and the described economizer of flowing through, enter described main electric expansion valve then; Described second arm is expelled to the cold-producing medium through the described shunting after the heat exchange in the described economizer in the reservoir.
Preferably, described heat exchange refrigerant pipe comprises sinuous capillary.Perhaps, described heat exchange refrigerant pipe adopts the form of multi-tubular heat exchanger.Described economizer comprises the main body of hollow cylinder and both ends open, first arm and second arm be oppositely arranged on described main body both sides so that the shunting cold-producing medium by described body interior; The both ends open of described main body connects header respectively, and the outer end of described header is for the cold-producing medium turnover, and the inner that is connected with main body of described header is provided with a plurality of connecting holes; Described heat exchange refrigerant pipe comprises a plurality of tubules that are arranged in parallel, insert in the connecting hole of described header and be connected with described header, thereby run through described economizer inside, the cold-producing medium that is drained into a header from condenser is distributed equably and carry out heat exchange, enter in the main electric expansion valve by another header then.
Be equipped with the heat pump of structure of extraction heat exchanger according to the present invention, in order to guarantee under the cold weather thermal source of (for example achilles tendon (Achilles ' tendon)), the sub-cooled liquid refrigerant (about proper mass of 20% to 35%) of a part extracted.At this moment,, use the extraction-type electric expansion valve to evaporate the interior sub-cooled liquid refrigerant of described structure of extraction heat exchanger according to low temperature situation (outside air temperature), thus the amount of regulating the cold-producing medium that is extracted.The cold-producing medium that extracts is sent in the reservoir that is arranged on the compressor reducer front, carries out heat exchange between remaining sub-cooled liquid refrigerant and the described cold-producing medium that extracts, and makes the further cold-peace of crossing of described remaining cold-producing medium reduce pressure.Described cold-producing medium expands in main electric expansion valve, enters outdoor unit (evaporimeter) then.Described cold-producing medium evaporates in outdoor unit, and in the porch and the described refrigerant mixed that extracts of reservoir, like this, the heat that evaporimeter obtains under the heating mode can reduce 20% to 35%.The amount of the flash gas that the feasible cold-producing medium that enters evaporimeter of supercooled realization generates reduces.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the schematic diagram according to the heat pump that is equipped with structure of extraction heat exchanger of first embodiment of the invention;
Fig. 2 is the p-h schematic diagram according to the heat pump that has structure of extraction heat exchanger of first embodiment of the invention;
Fig. 3 is the schematic diagram according to the heat pump that has structure of extraction heat exchanger of second embodiment of the invention;
Fig. 4 is the schematic diagram according to the heat pump that has structure of extraction heat exchanger of third embodiment of the invention;
Fig. 5 is the structural representation according to the structure of extraction heat exchanger of the heat pump of third embodiment of the invention;
Fig. 6 is the cutaway view according to the structure of extraction heat exchanger of the heat pump of third embodiment of the invention.
The specific embodiment
Be described in detail below with reference to the specific embodiment of accompanying drawing heat pump air conditioner of the present invention.
Fig. 1 is the schematic diagram according to the heat pump that is equipped with structure of extraction heat exchanger of first embodiment of the invention, and Fig. 2 is the p-h schematic diagram according to the heat pump that has structure of extraction heat exchanger of first embodiment of the invention.Below, as first embodiment of heat pump of the present invention, will introduce the kind of refrigeration cycle under the heating mode in the heat pump cycle.
As shown in the figure, the heat pump according to first embodiment of the invention comprises compressor reducer 10, condenser 20, evaporimeter 30, main electric expansion valve 40 and structure of extraction heat exchanger.
Compressor reducer 10 sucks low-temperature low-pressure refrigerant and is compressed into high-temperature high-pressure refrigerant, then high-temperature high-pressure refrigerant is discharged.
In condenser 20, the air by condenser 20 absorbs heat from the high-pressure refrigerant that compressor reducer 10 is discharged, make cold-producing medium liquefaction.
In evaporimeter 30, the cold-producing medium in the evaporimeter 30 evaporates after room air absorbs heat, the cooling room air.
Main electric expansion valve 40 is arranged between condenser 20 and the evaporimeter 30, and the high-pressure refrigerant by condenser 20 liquefaction is reduced pressure, and makes post-decompression cold-producing medium easily evaporation and the flow rate to be scheduled in evaporimeter 30.
Structure of extraction heat exchanger is with the part shunting of the HTHP sub-cooled liquid refrigerant in the exit of condenser 20, with at the described splitter section of HTHP sub-cooled liquid refrigerant and pass between the high temp/high pressure cold-producing medium of heat exchange refrigerant pipe 51 and carry out heat exchange, and described splitter section is shunted to reservoir 11.
In addition, this structure of extraction heat exchanger comprises economizer 52, and heat exchange refrigerant pipe 51 passes this economizer 52, and the HTHP sub-cooled liquid refrigerant that condenser 20 is discharged flows through this heat exchange refrigerant pipe 51; First arm 53 is connected to a side of economizer 52, and from a side branch of heat exchange refrigerant pipe 51; Second arm 54 is connected to economizer 52 opposite sides, and links to each other with refrigerant pipe between evaporimeter 30 and the reservoir 11; And inject electric expansion valve 55, and being installed on first arm 53, the HTHP sub-cooled liquid refrigerant that a part is shunted is expanded to low pressure refrigerant.
Preferably, heat exchange refrigerant pipe 51 comprises sinuous capillary, thereby increases the heat exchange surface in the economizer 52.
Running according to the heat pump that is equipped with structure of extraction heat exchanger of first embodiment of the invention will be described below:
Compressor reducer 10 sucks the gaseous refrigerant of evaporation in evaporimeter 30, and the gaseous refrigerant that sucks is compressed into high-pressure gaseous refrigerant, and keeping the internal pressure in the evaporimeter 30 simultaneously is low pressure, then high-pressure gaseous gas is entered in the condenser 20.After this, the absorption of air heat from the high-pressure gaseous refrigerant that compressor reducer 10 is discharged by condenser 20 makes this gaseous refrigerant liquefaction.At this moment, the heat that absorbs in condenser 20 equals the summation of the heat that generates in the heat that absorbs and the compression process in evaporimeter 30.
Then, exit at condenser 20, part HTHP sub-cooled liquid refrigerant is divided in first arm 53, the liquid cold-producing medium of the HTHP that is liquefied in condenser 20 is reduced pressure by the injection electric expansion valve 55 that is installed on first arm 53, flows through the inside of economizer 52 then.Like this, be depressurized and, cross the cold low liquid refrigerant then and flow in the reservoir 11 by second arm 54 by between the cold-producing medium of crossing relatively-high temperature high pressure in cold low liquid refrigerant and the refrigerant pipe 51 that injects electric expansion valve 55 heat exchange taking place.At this moment, though the degree of supercooling number increases, pressure descends, and the part compressed liquid cold-producing medium that flows through heat exchange refrigerant pipe 51 branched to economizer 52, and this compressed liquid cold-producing medium is expanded by main electric expansion valve 40, thereby reaches evaporating pressure.
In addition, because the part of refrigerant that enters evaporimeter 30 is diverted in the reservoir 11 by first arm 53, economizer 52 and second arm 54, thereby the proper mass that enters the cold-producing medium of evaporimeter 30 is extracted and reduces.Therefore, the heat absorption of evaporimeter 30 load reduces, and aridity reduce make the capacity of evaporimeter 30 enlarge about 30% or more.
In other words, as shown in Figure 2, among the P-h figure (shown in the solid line) according to the heat pump of first embodiment of the invention cold-zone C was arranged, and be not somebody's turn to do the cold-zone among the P-h of the conventional heat pump figure (shown in the dotted line).Thus, because structure of extraction heat exchanger has been installed, the degree of supercooling that enters the cold-producing medium of evaporimeter 30 reduces, and the aridity that enters the cold-producing medium of evaporimeter 30 also reduces, thereby has strengthened evaporation efficiency.
The result, because structure of extraction heat exchanger comprises first arm 53, second arm 54, injects electric expansion valve 55 and economizer 52, by the amount of control by the cold-producing medium that injects electric expansion valve 55 shuntings, can automatically adapt to the variation of outdoor conditions according to the heat pump of first embodiment of the invention, relevant control by main electronic valve 40, even when in cold weather, carrying out the constant speed single stage compress, also can show excellent heating properties.
Fig. 3 is the schematic diagram according to the heat pump that has structure of extraction heat exchanger of second embodiment of the invention.Structure according to the heat pump that is equipped with structure of extraction heat exchanger of second embodiment of the invention and the heat pump shown in Fig. 1 is roughly the same, the position difference of from condenser 20, shunting except sub-cooled liquid refrigerant, also promptly, have only the position of first arm 53 to change.
In other words, though in heat pump according to first embodiment of the invention, the HTHP sub-cooled liquid refrigerant is directly shunted in the exit of condenser 20, and in the heat pump according to second embodiment of the invention, from the exit discharge of condenser 20 and by behind the heat exchange refrigerant pipe 51, a part of HTHP sub-cooled liquid refrigerant is just shunted.Because identical with heat pump according to first embodiment of the invention according to the running of the heat pump of second embodiment of the invention and effect, thereby omission is to the description of its running and effect.
Therefore, the heat pump that is equipped with structure of extraction heat exchanger of first and second embodiment according to the present invention uses electric expansion valve and structure of extraction heat exchanger to come evaporation section HTHP sub-cooled liquid refrigerant, and reduces the heat absorption load.In the heat pump of first and second embodiment according to the present invention, reduce owing to enter the pressure of the cold-producing medium of evaporimeter, and degree of supercooling is stronger, compares with common heat pump, the amount of the flash gas of generation is reduced; Owing to be extracted out a part, thereby the proper mass that enters the cold-producing medium of evaporimeter reduces, and cold-producing medium is easy to evaporation.In order to keep owing to being extracted overheated unbalanced that proper mass causes, it is overheated unbalanced to have adopted electric expansion valve to control.Structure of extraction heat exchanger is made up of tubule and copper pipe, has tubular shell outside it, made cold cold-producing medium in tubule and copper pipe, flow, and the cold-producing medium that extracts after expanding in the expansion electronic valve is in the outer flow mistake of tubule and copper pipe, with the cold-producing medium reverse flow that extracts that flows in tubule and copper pipe.When changing the capacity of structure of extraction heat exchanger, can increase the quantity of tubule, thereby the amount of the heat transfer surface area of structure of extraction heat exchanger and the cold-producing medium in the pipe can be adapted with the change of the capacity of structure of extraction heat exchanger.
Fig. 4 is the schematic diagram according to the heat pump that has structure of extraction heat exchanger of third embodiment of the invention; Fig. 5 is the structural representation according to the structure of extraction heat exchanger of the heat pump of third embodiment of the invention; Fig. 6 is the cutaway view according to the structure of extraction heat exchanger of the heat pump of third embodiment of the invention.
As shown in the figure, the heat pump that is equipped with structure of extraction heat exchanger according to third embodiment of the invention comprises compressor reducer 310, condenser 320, evaporimeter 330, main electric expansion valve 340 and structure of extraction heat exchanger 350.Structure of extraction heat exchanger 350 will be shunted from a part of HTHP sub-cooled liquid refrigerant that the outlet of condenser 320 is discharged, carry out the heat exchange between the cold excessively liquid refrigerant of the HTHP of shunting and the high-temperature high-pressure refrigerant that passes through the refrigerant pipe between condenser 320 and the main electric expansion valve 340, and the cold-producing medium after the heat exchange is shunted to reservoir 311.Structure of extraction heat exchanger 350 comprises main body 352, a pair of header 354 and 355 and a plurality of tubule 358.
Preferably, described tubule is made of multi-tubular heat exchanger.
Running according to the structure of extraction heat exchanger structure of third embodiment of the invention terrestrial heat pump will be described following.
The sub-cooled liquid refrigerant that great majority are discharged from the outlet of condenser 320 enters right side header 355, and the cold-producing medium that enters evenly distributes in capillary 358.Afterwards, cold-producing medium carries out heat exchange by tubule 358, flows out from left side header 354 then, and enters evaporimeter 330.
Simultaneously, a part of discharging from the outlet of condenser 320 is crossed the liquid cold-producing medium of cold HTHP and is entered inlet 352a, and when this is crossed the liquid cold-producing medium of cold HTHP and passes through main body 352, and by carrying out heat exchange between the cold-producing medium of tubule 358.Then, this is crossed the liquid cold-producing medium of cold HTHP and enters in the reservoir 311 by outlet 352b.
Therefore, structure of extraction heat exchanger 350 comprises the guiding equally distributed header 354 of cold-producing medium and 355, and the main body 352 and the tubule 358 that directly contact cold-producing medium and carry out heat exchange.Header 354 and 355 the bootable cold-producing medium that is expanded to two-stage of shape distribute equably.Main body 352 and tubule 358 directly contact cold-producing medium, form multi-tubular heat exchanger, make the pressure of whole depressor area descend 10% to 18%, thereby have improved energy efficiency and efficiency of thermal transfer.
At this moment, when the needs increase is transmitted area with the proportional heat of capacity increase of heat pump, because the quantity of tubule 358 changes, and use the higher algebraic mean temperature difference, can guarantee enough amount of heat transfer by less area of heat transfer, and, can be applied to very expediently in the general heat pump because the extraction-type heat exchange is less.
As mentioned above, be equipped with the heat pump of structure of extraction heat exchanger among the present invention, control overheated unbalanced under the refrigerating mode, guarantee the low-temperature heat source under the heating mode, and, by extracting the amount of the cold-producing medium that the sub-cooled liquid refrigerant that flows out from the outlet of condenser and control automatically extracts, increased evaporation efficiency.In addition, heat pump of the present invention has guaranteed the stability of operation, and has strengthened the energy-saving efficiency under the refrigerating mode, supplemental heat source under heating mode, thus improved the coefficient of performance, improved the performance under the cold weather.
According to heat pump of the present invention, owing to adopt structure of extraction heat exchanger and two electric expansion valves, the thermic load that conventional evaporator must be able to be obtained reduces 20% to 35%.Structure of extraction heat exchanger and extraction-type electric expansion valve obtain thermic load from sub-cooled liquid refrigerant, so the thermic load of obtaining in the cool region can reduce.Because the amount of the flash gas that produces in the evaporimeter reduces, the heat transfer efficiency of evaporimeter increases, and because low pressure obtains increase, thereby total efficient is improved.Especially, because Load Evaporator reduces, the evaporimeter and the outdoor temperature difference reduce, and compare with the heat pump of routine, and frosting degree reduces, and therefore can raise the efficiency.
Be equipped with the heat pump of structure of extraction heat exchanger according to the present invention, descend by even distribution and the pressure of considering cold-producing medium, the quantity of tubule can change according to the increase of heat pump capacity.
Though for the purpose of explaining, more than specific embodiments of the invention are described, but those of ordinary skill in the art as can be known, according to the instruction of disclosed content among the application, can make various modifications, increase or be equal to the present invention and replace and do not depart from the scope of the present invention and spiritual essence.
Claims (6)
1. heat pump that is equipped with structure of extraction heat exchanger comprises:
Compressor, the low-temperature low-pressure refrigerant that is used for extracting are compressed into high-temperature high-pressure refrigerant and discharge;
The heat of the high-temperature high-pressure refrigerant that condenser, the absorption of air of passing through within it enter from described compressor is with described high-temperature high-pressure refrigerant liquefaction;
Evaporimeter, cold-producing medium within it absorb heat and are evaporated from room air, the cooling room air;
Main electric expansion valve is connected between described condenser and the described evaporimeter, and the high pressure liquid refrigerant that described condenser is discharged reduces pressure; It is characterized in that described heat pump also comprises:
Structure of extraction heat exchanger, described structure of extraction heat exchanger comprise both sides be connected with the economizer of first arm and second arm respectively, pass from two ends described economizer inside the heat exchange refrigerant pipe, be installed in the injection electric expansion valve on described first arm;
Described first arm will and enter in the described economizer after described injection electric expansion valve decompression from the liquid cold-producing medium shunting of a part of HTHP that described condenser is discharged;
Described heat exchange refrigerant pipe is connected between described condenser and the described main electric expansion valve, to carry out heat exchange from the part of refrigerant of the described shunting in the liquid cold-producing medium of the HTHP that described condenser is discharged and the described economizer of flowing through, enter described main electric expansion valve then;
Described second arm is expelled to the cold-producing medium through the described shunting after the heat exchange in the described economizer in the reservoir.
2. the heat pump that is equipped with structure of extraction heat exchanger according to claim 1 is characterized in that, described heat exchange refrigerant pipe comprises a plurality of tubules that are arranged in parallel.
3. the heat pump that is equipped with structure of extraction heat exchanger according to claim 1 is characterized in that, described heat exchange refrigerant pipe comprises sinuous capillary.
4. the structure of extraction heat exchanger of a heat pump, described heat pump comprises compressor reducer, condenser, evaporimeter, main electric expansion valve, described structure of extraction heat exchanger is used for the liquid cold-producing medium shunting of a part of HTHP of discharging from described condenser, and carry out heat exchange between the HTHP sub-cooled liquid refrigerant distribute and the high-temperature high-pressure refrigerant that is discharged to described main electric expansion valve from described condenser, cold-producing medium with described shunting is diverted in the reservoir then, it is characterized in that described structure of extraction heat exchanger comprises that both sides are connected with the economizer of first arm and second arm respectively, pass the heat exchange refrigerant pipe of described economizer inside from two ends, be installed in the injection electric expansion valve on described first arm;
Described first arm will and enter in the described economizer after described injection electric expansion valve decompression from the liquid cold-producing medium shunting of a part of HTHP that described condenser is discharged;
Described heat exchange refrigerant pipe is connected between described condenser and the described main electric expansion valve, to carry out heat exchange from the part of refrigerant of the described shunting in the liquid cold-producing medium of the HTHP that described condenser is discharged and the described economizer of flowing through, enter described main electric expansion valve then;
Described second arm is expelled to the cold-producing medium through the described shunting after the heat exchange in the described economizer in the reservoir.
5. the structure of extraction heat exchanger of heat pump according to claim 4 is characterized in that, described heat exchange refrigerant pipe comprises sinuous capillary.
6. the structure of extraction heat exchanger of heat pump according to claim 4, it is characterized in that, described economizer comprises the main body of hollow cylinder and both ends open, first arm and second arm be oppositely arranged on described main body both sides so that the shunting cold-producing medium by described body interior; The both ends open of described main body connects header respectively, and the outer end of described header is for the cold-producing medium turnover, and the inner that is connected with main body of described header is provided with a plurality of connecting holes; Described heat exchange refrigerant pipe comprises a plurality of tubules that are arranged in parallel, insert in the connecting hole of described header and be connected with described header, thereby run through described economizer inside, the cold-producing medium that is drained into a header from condenser is distributed equably and carry out heat exchange, enter in the main electric expansion valve by another header then.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040097165A KR100623515B1 (en) | 2004-11-24 | 2004-11-24 | Heat pump having extraction heat exchanger |
| KR1020040097165 | 2004-11-24 | ||
| KR1020040108308 | 2004-12-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1779384A CN1779384A (en) | 2006-05-31 |
| CN100365357C true CN100365357C (en) | 2008-01-30 |
Family
ID=36769797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101197516A Expired - Fee Related CN100365357C (en) | 2004-11-24 | 2005-11-04 | Heat pump and structure of extraction heat exchanger thereof |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100623515B1 (en) |
| CN (1) | CN100365357C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032725A (en) * | 2010-12-08 | 2011-04-27 | 海尔集团公司 | Supercooling device, air conditioner with device and method for controlling refrigerant flow of air conditioner |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100681464B1 (en) * | 2006-02-27 | 2007-02-09 | 주식회사 대우일렉트로닉스 | Heat pump air-conditioner of injection type and defrosting method thereof |
| KR100728341B1 (en) * | 2006-02-27 | 2007-06-13 | 주식회사 대우일렉트로닉스 | Heat pump air-conditioner of injection type |
| SG181438A1 (en) | 2009-12-18 | 2012-07-30 | Carrier Corp | Transport refrigeration system and methods for same to address dynamic conditions |
| CN106225273A (en) * | 2016-07-29 | 2016-12-14 | 青岛海尔特种电冰柜有限公司 | Cooling cycle system and refrigeration plant |
| KR20180056854A (en) * | 2016-11-21 | 2018-05-30 | 주식회사 에프에스티 | High-capacity rapid-cooling cryogenic freezer capable of controlling the suction temperature of the compressor |
| JP7101024B2 (en) * | 2018-04-03 | 2022-07-14 | 東京エレクトロン株式会社 | Temperature control system |
| IT201900021486A1 (en) * | 2019-11-18 | 2021-05-18 | Mitsubishi Electric Hydronics & It Cooling Systems S P A | IMPROVED ARRANGEMENT OF AIR-COOLED REFRIGERATION CYCLE |
| DE102020202313A1 (en) * | 2020-02-24 | 2021-08-26 | Mahle International Gmbh | Heat exchanger |
| KR20230147870A (en) | 2022-04-15 | 2023-10-24 | 현대자동차주식회사 | Thermal management system for vehicle of gas injection type |
| US20240200839A1 (en) * | 2022-12-14 | 2024-06-20 | Johnson Controls Tyco IP Holdings LLP | Energy efficient heat pump with control system and compressor injection |
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| US4551983A (en) * | 1983-06-17 | 1985-11-12 | Hitachi, Ltd. | Refrigeration apparatus |
| US5479789A (en) * | 1994-12-29 | 1996-01-02 | Aire Solutions, Inc. | Heat exchanger for a heat pump |
| EP0855562A1 (en) * | 1996-08-14 | 1998-07-29 | Daikin Industries, Limited | Air conditioner |
| US5848537A (en) * | 1997-08-22 | 1998-12-15 | Carrier Corporation | Variable refrigerant, intrastage compression heat pump |
| EP1162414A1 (en) * | 1999-02-17 | 2001-12-12 | Yanmar Diesel Engine Co. Ltd. | Refrigerant supercooling circuit |
| CN1448672A (en) * | 2002-03-28 | 2003-10-15 | 陈玪洙 | Heat pump system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR0151357B1 (en) * | 1995-08-07 | 1998-11-02 | 구자홍 | Apparatus for controlling cold-degree and absorbing gas of an airconditioner |
| JP2006505763A (en) * | 2002-11-11 | 2006-02-16 | ボルテックス エアコン | Cooling system with bypass subcooling and component size deoptimization |
| US20070039351A1 (en) * | 2003-02-28 | 2007-02-22 | Cheolho Bai | Refrigeration system having an integrated bypass system |
-
2004
- 2004-11-24 KR KR1020040097165A patent/KR100623515B1/en not_active IP Right Cessation
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- 2005-11-04 CN CNB2005101197516A patent/CN100365357C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4551983A (en) * | 1983-06-17 | 1985-11-12 | Hitachi, Ltd. | Refrigeration apparatus |
| US5479789A (en) * | 1994-12-29 | 1996-01-02 | Aire Solutions, Inc. | Heat exchanger for a heat pump |
| EP0855562A1 (en) * | 1996-08-14 | 1998-07-29 | Daikin Industries, Limited | Air conditioner |
| US5848537A (en) * | 1997-08-22 | 1998-12-15 | Carrier Corporation | Variable refrigerant, intrastage compression heat pump |
| EP1162414A1 (en) * | 1999-02-17 | 2001-12-12 | Yanmar Diesel Engine Co. Ltd. | Refrigerant supercooling circuit |
| CN1448672A (en) * | 2002-03-28 | 2003-10-15 | 陈玪洙 | Heat pump system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032725A (en) * | 2010-12-08 | 2011-04-27 | 海尔集团公司 | Supercooling device, air conditioner with device and method for controlling refrigerant flow of air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20060057963A (en) | 2006-05-29 |
| KR100623515B1 (en) | 2006-09-19 |
| CN1779384A (en) | 2006-05-31 |
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