CN105783326A - Variable-flow single-working-medium sharing heat exchanger overlapping heat pump system - Google Patents
Variable-flow single-working-medium sharing heat exchanger overlapping heat pump system Download PDFInfo
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- CN105783326A CN105783326A CN201610288319.8A CN201610288319A CN105783326A CN 105783326 A CN105783326 A CN 105783326A CN 201610288319 A CN201610288319 A CN 201610288319A CN 105783326 A CN105783326 A CN 105783326A
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- 238000007599 discharging Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000009833 condensation Methods 0.000 abstract description 10
- 230000005494 condensation Effects 0.000 abstract description 10
- 238000005057 refrigeration Methods 0.000 description 15
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
Classifications
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
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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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
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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
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/19—Pumping down refrigerant from one part of the cycle to another part of the cycle, e.g. when the cycle is changed from cooling to heating, or before a defrost cycle is started
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a variable-flow single-working-medium sharing heat exchanger overlapping heat pump system. Each compressor set of the heat pump system comprises a compressor, a four-way reversing valve, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and a fourth electromagnetic valve, wherein the exhaust end of the compressor is connected with a first connector of the four-way reversing valve; the air suction end of the compressor is connected with a third connector of the four-way reversing valve; one end of the first electromagnetic valve is in parallel connection with one end of the second electromagnetic valve and then connected with a second connector of the four-way reversing valve; and the third electromagnetic valve is in parallel connection with one end of the fourth electromagnetic valve and then connected with a fourth connector of the four-way reversing valve. The other ends of the first electromagnetic valves are in parallel connection and then connected with a second connector of a condensation evaporator through a first heat exchanger and a first throttle valve. The other ends of the second electromagnetic valves are in parallel connection and then connected with a third connector of the condensation evaporator. The other ends of the third electromagnetic valves are in parallel connection and then connected with a first connector of the condensation evaporator. The other ends of the fourth electromagnetic valves are in parallel connection and then connected with a fourth connector of the condensation evaporator through a second heat exchanger and a second throttle valve. The overlapping heat pump system is composed of a single working medium, and an expansion container and other devices are not used, so that the system structure is simple.
Description
Technical field
The present invention relates to a kind of source pump, in particular, relate to the overlapping heat pump circulating system of a kind of multi-machine heads, in order to improve overlapping heat pump system efficiency, the working medium flow simultaneously for heat pump can be adjusted.
Background technology
Single stage compress heat pump, owing to being subject to the restriction of compressor suction and discharge compression ratio, is not suitable for the compression ratio ratio of pressure of inspiration(Pi) (pressure at expulsion with) heat pump more than 12.In the prior art, two-stage compression heat pump system is generally adopted when compression ratio is more than 12.Two-stage compression heat pump unit can by a driven by motor, it is also possible to realized by multi-machine heads combo.But both mode high-low pressure intercommunications, the problem of oil return of compressor is not easily solved.
When needs obtain heat from lower temperature or need to carry heat to higher temperature, overlapping heat pump is also good settling mode.Heat is absorbed heat from low-temperature heat source by low-temperature level heat pump working medium, passes to the condenser/evaporator connecting low-temperature level heat pump and high-temperature level heat pump, then is transferred heat in hot environment by high-temperature level heat pump working medium.This traditional overlapping heat pump is made up of two kinds of working medium, and high-temperature level heat pump adopts high temperature refrigerant, and low-temperature level heat pump adopts cryogenic fluid.But be in supercriticality due to cryogenic fluid at normal temperatures, generally set expansion vessel in low-temperature level, system complex and also be difficulty with become working medium flow control.
Summary of the invention
The present invention is to overcome defect of the prior art, it is provided that the overlapping heat pump circulating system of a kind of multi-machine heads either simplex matter, and in order to improve overlapping heat pump system efficiency, the working medium flow simultaneously for heat pump can be adjusted.
The present invention is achieved through the following technical solutions:
nullA kind of variable-flow either simplex matter common heat exchanger overlapping heat pump，Including the many groups of compressor bank being connected in parallel、First Heat Exchanger、Condenser/evaporator、Second heat exchanger、First throttle valve and second throttle，Often group compressor bank includes compressor、Four-way change-over valve、First electromagnetic valve、Second electromagnetic valve、3rd electromagnetic valve、4th electromagnetic valve，Compressor air-discharging end connects four-way change-over valve first interface，Compressor air suction end connects four-way change-over valve the 3rd interface，First electromagnetic valve one end is connected with four-way change-over valve the second interface after being connected in parallel with second electromagnetic valve one end，First Heat Exchanger is passed through after first electromagnetic valve other end parallel connection、First throttle valve and condenser/evaporator the second interface connect，It is connected with condenser/evaporator the 3rd interface after second electromagnetic valve other end parallel connection，3rd electromagnetic valve and the 4th electromagnetic valve one end are connected with four-way change-over valve the 4th interface after being connected in parallel，It is connected with condenser/evaporator first interface after 3rd electromagnetic valve other end parallel connection，By the second heat exchanger after 4th electromagnetic valve other end parallel connection、Second throttle and condenser/evaporator the 4th interface connect.
Compressor can as the high-temperature level of kind of refrigeration cycle and low-temperature level compressor, it is possible to as high-temperature level and the low-temperature level compressor of heat pump cycle.When compressor is as the high-temperature level compressor of refrigeration system, four-way change-over valve first interface and the second interface communicate, 3rd interface and the 4th interface communicate, first electromagnetic valve and the 3rd electromagnetic valve are opened, second electromagnetic valve and the 4th closed electromagnetic valve, now working medium be compressed by the compressor after through four-way change-over valve first interface, four-way change-over valve the second interface, first electromagnetic valve condenses in First Heat Exchanger, evaporate in condenser/evaporator after first throttle valve throttles, absorb the condensation heat of low-temperature level, then through the 3rd electromagnetic valve, four-way change-over valve the 4th interface, four-way change-over valve the 3rd interface returns in compressor；When compressor is as the low-temperature level compressor of refrigeration system, four-way change-over valve first interface and the second interface communicate, 3rd interface and the 4th interface communicate, second electromagnetic valve and the 4th electromagnetic valve are opened, first electromagnetic valve and the 3rd closed electromagnetic valve, now working medium be compressed by the compressor after through four-way change-over valve first interface, four-way change-over valve the second interface, second electromagnetic valve condenses in condenser/evaporator, dispel the heat to high-temperature level, condensed working medium is evaporated in the second heat exchanger after second throttle throttles, produce refrigeration phenomenon, then through the 4th electromagnetic valve, four-way change-over valve the 4th interface, four-way change-over valve the 3rd interface returns in compressor；When compressor is as the high-temperature level compressor of heat pump, four-way change-over valve first interface and the 4th interface communicate, second interface and the 3rd interface communicate, second electromagnetic valve and the 4th electromagnetic valve are opened, first electromagnetic valve and the 3rd closed electromagnetic valve, now working medium be compressed by the compressor after through four-way change-over valve first interface, four-way change-over valve the 4th interface, 4th electromagnetic valve condenses in the second heat exchanger, generation heats phenomenon, evaporate in condenser/evaporator after second throttle throttles, absorb the condensation heat of low-temperature level, then through the second electromagnetic valve, four-way change-over valve the second interface, four-way change-over valve the 3rd interface returns in compressor；When compressor is as the low-temperature level compressor of heat pump, four-way change-over valve first interface and the 4th interface communicate, second interface and the 3rd interface communicate, first electromagnetic valve and the 3rd electromagnetic valve are opened, second electromagnetic valve and the 4th closed electromagnetic valve, now working medium be compressed by the compressor after through four-way change-over valve first interface, four-way change-over valve the 4th interface, 3rd electromagnetic valve condenses in condenser/evaporator, dispel the heat to high-temperature level, condensed working medium is evaporated after first throttle valve throttles in First Heat Exchanger, absorb heat of low-temperature heat source, then through the first electromagnetic valve, four-way change-over valve the second interface, four-way change-over valve the 3rd interface returns in compressor.
Described compressor is in screw compressor, rotor compressor, helical-lobe compressor, piston compressor or any one of other pattern compressor, variable-flow mode is adjusted by AC frequency conversion or DC frequency-changing, it is possible to adopt working medium unloading and load mode to realize the Flow-rate adjustment of working medium.
Described First Heat Exchanger and the second heat exchanger are air-cooled, water-cooled or other pattern heat exchanger.
Described condenser/evaporator is plate type heat exchanger, double pipe heat exchanger or other pattern heat exchanger.
Described first throttle valve and second throttle are electric expansion valve, heating power expansion valve, capillary tube or throttle orifice plate apparatus.
Described electromagnetic valve can be replaced by hand stop valve, ball valve etc..
Described four-way change-over valve also can be replaced by multiple electromagnetic valves.
Compared with prior art, the invention has the beneficial effects as follows:
1, system is flexible: the compressor in the overlapping heat pump of the present invention all can pass through suction end and exhaust end electromagnetic valve be turned on and off use as the high-temperature level of the high-temperature level of refrigeration system, low-temperature level and heat pump, low-temperature level, realize the mutual conversion of high-temperature level compressor and low-temperature level compressor, it is simple to carry out inter-stage energy adjustment.
2, system is simple: the overlapping heat pump of the present invention is made up of either simplex matter, and without devices such as expansion vessels, system structure is simple.
3, efficiency is high: owing to adopting change working medium flow mode to realize control, high-temperature level heat pump and low-temperature level heat pump working medium flow reasonable mixture ratio, system effectiveness is high.
4, solve compressor problem of oil return: high-temperature level heat pump of the present invention and the isolation of low-temperature level heat pump, solve and adopt the oil return inequality problem occurred during two-stage compression cycle system.
Accompanying drawing explanation
Fig. 1 show variable-flow either simplex matter of the present invention and shares First Heat Exchanger, the second heat exchanger overlapping heat pump schematic diagram；
Four interface diagram that Fig. 2 show in the present invention four-way change-over valve,
Four interface diagram that Fig. 3 show in the present invention condenser/evaporator.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments to the detailed description of the invention.
Embodiment 1
nullThe variable-flow either simplex matter that Fig. 1 is the present invention shares First Heat Exchanger、Second heat exchanger overlapping heat pump schematic diagram，Including the many groups of compressor bank being connected in parallel、First Heat Exchanger 4、Condenser/evaporator 6、Second heat exchanger 7、First throttle valve 5-1 and second throttle 5-2，Often group compressor bank includes compressor 1、Four-way change-over valve 2、First electromagnetic valve 3-1、Second electromagnetic valve 3-2、3rd electromagnetic valve 3-3、4th electromagnetic valve 3-4，Described compressor 1 exhaust end connects described four-way change-over valve first interface 2-1，Described compressor air suction end connects described four-way change-over valve the 3rd interface 2-3，Described first electromagnetic valve 3-1 is connected with described four-way change-over valve the second interface 2-2 after being connected in parallel with described second electromagnetic valve 3-2 one end，The described first electromagnetic valve 3-1 other end successively with described First Heat Exchanger 4、Described first throttle valve 5-1 and described condenser/evaporator the second interface 6-2 connects，The described second electromagnetic valve 3-2 other end is connected with described condenser/evaporator the 3rd interface 6-3 successively，Described 3rd electromagnetic valve 3-3 is connected with described four-way change-over valve the 4th interface 6-4 after being connected in parallel with described 4th electromagnetic valve 3-4 one end，The described 3rd electromagnetic valve 3-3 other end is connected with described condenser/evaporator first interface 6-1，The described 4th electromagnetic valve 3-4 other end successively with described second heat exchanger 7、Described second throttle 5-2 and described condenser/evaporator the 4th interface 6-4 connects.
Fig. 2 show four interfaces of described four-way change-over valve 2, wherein: four-way change-over valve first interface 2-1, four-way change-over valve the second interface 2-2, four-way change-over valve the 3rd interface 2-3, four-way change-over valve the 4th interface 2-4.When described four-way change-over valve first interface 2-1 communicates with described four-way change-over valve the second interface 2-2, described four-way change-over valve the 3rd interface 2-3 communicates with described four-way change-over valve the 4th interface 2-4；When described four-way change-over valve first interface 2-1 communicates with described four-way change-over valve the 4th interface 2-4, described four-way change-over valve the second interface 2-2 communicates with described four-way change-over valve the 3rd interface 2-3.
Fig. 3 show four interfaces of described condenser/evaporator 6, wherein: condenser/evaporator first interface 6-1, condenser/evaporator the second interface 6-2, condenser/evaporator the 3rd interface 6-3, condenser/evaporator the 4th interface 6-4.Described condenser/evaporator first interface 6-1 communicates with described condenser/evaporator the second interface 6-2, and described condenser/evaporator the 3rd interface 6-3 communicates with described condenser/evaporator the 4th interface 6-4.
The matter of variable-flow either simplex shown in Fig. 1 shares First Heat Exchanger, the second heat exchanger overlapping heat pump can realize the circulation of variable-flow either simplex matter cascade refrigeration system, it is also possible to realize the circulation of variable-flow either simplex matter overlapping heat pump.Compressor 1 described in any of which platform can not only be used for refrigeration system circulation (or heat pump circulation) high-temperature level compressor and uses, it is possible to circulates (or heat pump circulation) low-temperature level compressor as refrigeration system and uses.Concrete condition is as follows:
1, described compressor 1 uses as refrigeration system cyclic high-temperature level compressor: described First Heat Exchanger 4 is condenser, each described four-way change-over valve first interface 2-1 organizing compressor bank communicates with described four-way change-over valve the second interface 2-2, described four-way change-over valve the 3rd interface 2-3 communicates with described four-way change-over valve the 4th interface 2-4, described first electromagnetic valve 3-1 and described 3rd electromagnetic valve 3-3 opens, and described second electromagnetic valve 3-2 and described 4th electromagnetic valve 3-4 closes.Working medium compressed by described compressor 1 after through described four-way change-over valve first interface 2-1, described four-way change-over valve the second interface 2-2 and described first electromagnetic valve 3-1 enters condensation in described First Heat Exchanger 4, to function of environment heat emission, after first throttle valve 5-1 throttles, evaporation described condenser/evaporator 6 is entered from described condenser/evaporator the second interface 6-2 through described, flow out from described condenser/evaporator first interface 6-1 after absorbing low-temperature level refrigeration system heat, through described 3rd electromagnetic valve 3-3, described four-way change-over valve the 4th interface 2-4 and described four-way change-over valve the 3rd interface 2-3 returns in described compressor 1.
2, described compressor 1 circulates the use of low-temperature level compressor as refrigeration system: described second heat exchanger 7 is vaporizer, each described four-way change-over valve first interface 2-1 organizing compressor bank communicates with described four-way change-over valve the second interface 2-2, described four-way change-over valve the 3rd interface 2-3 communicates with described four-way change-over valve the 4th interface 2-4, described second electromagnetic valve 3-2 and described 4th electromagnetic valve 3-4 opens, and described first electromagnetic valve 3-1 and described 3rd electromagnetic valve 3-3 closes.Working medium compressed by described compressor 1 after through described four-way change-over valve first interface 2-1, described four-way change-over valve the second interface 2-2 and described second electromagnetic valve 3-2 enters condensation described condenser/evaporator 6 from described condenser/evaporator the 3rd interface 6-3, flow out from described condenser/evaporator the 4th interface 6-4 after high-temperature level refrigeration system heat release, enter after described second throttle 5-2 throttles in described second heat exchanger 7 and evaporate, produce refrigeration phenomenon, through described 4th electromagnetic valve 3-4, described four-way change-over valve the 4th interface 2-4 and described four-way change-over valve the 3rd interface 2-3 returns in described compressor 1.
3, described compressor 1 uses as heat pump cyclic high-temperature level compressor: described second heat exchanger 7 is condenser, each described four-way change-over valve first interface 2-1 organizing compressor bank communicates with described four-way change-over valve the 4th interface 2-4, described four-way change-over valve the second interface 2-2 communicates with described four-way change-over valve the 3rd interface 2-3, described second electromagnetic valve 3-2 and described 4th electromagnetic valve 3-4 opens, and described first electromagnetic valve 3-1 and described 3rd electromagnetic valve 3-3 closes.Working medium compressed by described compressor 1 after through described four-way change-over valve first interface 2-1, described four-way change-over valve the 4th interface 2-4 and described 4th electromagnetic valve 3-4 enters condensation heat release in described second heat exchanger 7, generation heats phenomenon, evaporation described condenser/evaporator 6 is entered from described condenser/evaporator the 4th interface 6-4 after described second throttle 5-2 throttles, flow out from described condenser/evaporator the 3rd interface 6-3 after absorbing low-temperature level heat pump heat, through described second electromagnetic valve 3-2, described four-way change-over valve the second interface 2-2 and described four-way change-over valve the 3rd interface 2-3 returns in described compressor 1.
4, described compressor 1 circulates the use of low-temperature level compressor as heat pump: described First Heat Exchanger 4 is vaporizer, each described four-way change-over valve first interface 2-1 organizing compressor bank communicates with described four-way change-over valve the 4th interface 2-4, described four-way change-over valve the second interface 2-2 communicates with described four-way change-over valve the 3rd interface 2-3, described first electromagnetic valve 3-1 and described 3rd electromagnetic valve 3-3 opens, and described second electromagnetic valve 3-2 and described 4th electromagnetic valve 3-4 closes.Working medium compressed by described compressor 1 after through described four-way change-over valve first interface 2-1, described four-way change-over valve the 4th interface 2-4 and described 3rd electromagnetic valve 3-3 enters condensation described condenser/evaporator 6 from described condenser/evaporator first interface 6-1, flow out from described condenser/evaporator the second interface 6-2 after dispelling the heat to high-temperature level heat pump, enter after described first throttle valve 5-1 throttles in described First Heat Exchanger 4 and evaporate, absorb heat of low-temperature heat source, through described first electromagnetic valve 3-1, described four-way change-over valve the second interface 2-2 and described four-way change-over valve the 3rd interface 2-3 returns in described compressor 1.
Only list shared First Heat Exchanger in the embodiment of the present invention, the second heat exchanger overlapping heat pump can adopt shared First Heat Exchanger in actual applications, the second heat exchanger overlapping heat pump in parallel and First Heat Exchanger in parallel, shares the second heat exchanger overlapping heat pump.
Compressor in the variable-flow either simplex matter overlapping heat pump of the present invention can realize high-temperature level refrigeration (or heat pump) system and the changes in flow rate of low-temperature level refrigeration (or heat pump) system by start-stop or motor frequency conversion.
The variable-flow either simplex matter overlapping heat pump of the present invention is when specifically using, and compressor can partly or entirely adopt invariable frequency compressor, to reduce investment.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (5)
- null1. a variable-flow either simplex matter common heat exchanger overlapping heat pump，It is characterized in that，Including the many groups of compressor bank being connected in parallel、First Heat Exchanger、Condenser/evaporator、Second heat exchanger、First throttle valve and second throttle，Often group compressor bank includes compressor、Four-way change-over valve、First electromagnetic valve、Second electromagnetic valve、3rd electromagnetic valve、4th electromagnetic valve，Compressor air-discharging end connects four-way change-over valve first interface，Compressor air suction end connects four-way change-over valve the 3rd interface，First electromagnetic valve one end is connected with four-way change-over valve the second interface after being connected in parallel with second electromagnetic valve one end，First Heat Exchanger is passed through after first electromagnetic valve other end parallel connection、First throttle valve and condenser/evaporator the second interface connect，It is connected with condenser/evaporator the 3rd interface after second electromagnetic valve other end parallel connection，3rd electromagnetic valve and the 4th electromagnetic valve one end are connected with four-way change-over valve the 4th interface after being connected in parallel，It is connected with condenser/evaporator first interface after 3rd electromagnetic valve other end parallel connection，By the second heat exchanger after 4th electromagnetic valve other end parallel connection、Second throttle and condenser/evaporator the 4th interface connect.
- 2. variable-flow either simplex matter common heat exchanger overlapping heat pump according to claim 1, it is characterised in that described compressor is screw compressor, rotor compressor, helical-lobe compressor or piston compressor.
- 3. variable-flow either simplex matter common heat exchanger overlapping heat pump according to claim 1, it is characterised in that described First Heat Exchanger and the second heat exchanger are air-cooled or water-cooled.
- 4. variable-flow either simplex matter common heat exchanger overlapping heat pump according to claim 1, it is characterised in that described condenser/evaporator is plate type heat exchanger or double pipe heat exchanger.
- 5. variable-flow either simplex matter common heat exchanger overlapping heat pump according to claim 1, it is characterised in that described first throttle valve and second throttle are electric expansion valve, heating power expansion valve, capillary tube or throttle orifice plate apparatus.
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| CN201610288319.8A CN105783326B (en) | 2016-05-03 | 2016-05-03 | Variable-flow either simplex matter common heat exchanger overlapping heat pump system |
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| CN201610288319.8A CN105783326B (en) | 2016-05-03 | 2016-05-03 | Variable-flow either simplex matter common heat exchanger overlapping heat pump system |
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| CN105783326B CN105783326B (en) | 2019-01-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266917A (en) * | 2018-03-21 | 2018-07-10 | 天津商业大学 | Variable-flow multi-cycle heat pump system |
| CN108318273A (en) * | 2018-04-24 | 2018-07-24 | 天津商业大学 | A kind of multi-cycle heat pump experimental bench |
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| CN108332443A (en) * | 2018-03-21 | 2018-07-27 | 天津商业大学 | The refrigeration system of variable-flow single stage compress cycle and cascade cycle can be achieved |
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| CN108332443B (en) * | 2018-03-21 | 2024-01-19 | 天津商业大学 | Refrigerating system capable of realizing variable flow single-stage compression cycle and cascade cycle |
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