CN115307338A - Gas heat pump heat recovery device and control method - Google Patents
Gas heat pump heat recovery device and control method Download PDFInfo
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- CN115307338A CN115307338A CN202210967575.5A CN202210967575A CN115307338A CN 115307338 A CN115307338 A CN 115307338A CN 202210967575 A CN202210967575 A CN 202210967575A CN 115307338 A CN115307338 A CN 115307338A
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- steering gear
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- diverter
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- 238000011084 recovery Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 99
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 239000000498 cooling water Substances 0.000 claims description 182
- 238000004378 air conditioning Methods 0.000 claims description 63
- 239000007788 liquid Substances 0.000 claims description 43
- 229910052731 fluorine Inorganic materials 0.000 claims description 28
- 239000011737 fluorine Substances 0.000 claims description 28
- 238000010257 thawing Methods 0.000 claims description 11
- 238000005057 refrigeration Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 description 64
- 239000007789 gas Substances 0.000 description 32
- 239000003921 oil Substances 0.000 description 25
- 239000010687 lubricating oil Substances 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
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
- 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
- F25B41/40—Fluid line arrangements
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
Abstract
The invention discloses a heat recovery device of a gas heat pump and a control method thereof, wherein the heat recovery device comprises a heat recovery system, the heat recovery system comprises a steering component and a heat recoverer, the steering component comprises a second steering gear, a third steering gear, a fourth steering gear and a fifth steering gear, a first interface of the second steering gear is connected with an air conditioner water outlet, a second interface of the second steering gear is connected with a second interface of the fourth steering gear, a first interface of the third steering gear is connected with an air conditioner water inlet, a second interface of the third steering gear is connected with a second interface of the fifth steering gear, a third interface of the second steering gear is connected with a first air conditioner water passage port of the heat recoverer after being connected with a third interface of the third steering gear, and a third interface of the fourth steering gear is connected with a second air conditioner water passage port of the heat recoverer after being connected with a third interface of the fifth steering gear. The invention provides a heat recovery device of a gas heat pump and a control method, which can change heat exchange positions according to different states and temperatures and improve heating efficiency.
Description
Technical Field
The invention relates to a heat recovery device of a gas heat pump and a control method, belonging to the technical field of gas heat pumps.
Background
The gas heat pump is an air conditioning system which utilizes a gas engine to drive a compressor to run and performs refrigeration and heating. By recycling the waste heat of the gas engine, the heating effect of the gas heat pump is far better than that of a common electric heat pump. At present, the common heat recovery design in the industry utilizes the refrigerant to exchange heat with cooling water of a gas engine, and the heat is recovered through the refrigerant. The heat recovery device of this design must be placed on the low pressure side, either in parallel or in series with the air conditioning evaporator. When the ambient temperature is lowered, the evaporation pressure at the low-pressure side is increased due to the large heat of the engine cooling water, and when the evaporation temperature corresponding to the evaporation pressure is close to or even higher than the ambient temperature, the air conditioner evaporator cannot exchange heat with the air. At the moment, the gas heat pump is not an air source heat pump, but a direct-fired machine similar to a boiler, and the heating efficiency is greatly reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a heat recovery device of a gas heat pump and a control method thereof, which can change the heat exchange position according to different states and temperatures and improve the heating efficiency.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme:
on one hand, the invention provides a heat recovery device of a gas heat pump, which comprises a heat recovery system and an engine cooling water system, wherein the heat recovery system comprises a steering assembly and a heat recoverer, the steering assembly comprises a second steering gear, a third steering gear, a fourth steering gear and a fifth steering gear, a first interface of the second steering gear is connected with an air conditioner water outlet, a second interface of the second steering gear is connected with a second interface of the fourth steering gear, a first interface of the third steering gear is connected with an air conditioner water inlet, a second interface of the third steering gear is connected with a second interface of the fifth steering gear, a third interface of the second steering gear is connected with a third interface of the third steering gear and then connected with a first air conditioner water channel port of the heat recoverer, and a third interface of the fourth steering gear is connected with a third interface of the fifth steering gear and then connected with a second air conditioner water channel port of the heat recoverer;
the engine cooling water system comprises an engine, a cooling water pump, a first steering gear and a radiator, wherein an outlet of the cooling water pump is connected with a cooling water inlet of the engine, a cooling water outlet of the engine is connected with a first interface of the first steering gear, a second interface of the first steering gear is connected with a cooling water inlet of a heat recoverer, a cooling water outlet of the heat recoverer is connected with an inlet of the cooling water pump, a third interface of the first steering gear is connected with an inlet of the radiator, and an outlet of the radiator is connected with an inlet of the cooling water pump.
The engine is in transmission connection with the compressor through a belt, an outlet of the compressor is connected with an inlet of the oil separator, an outlet of the oil separator is connected with a first interface of the sixth steering gear, an oil discharge port of the oil separator is connected with an outlet of the gas-liquid separator and then connected with an inlet of the compressor, a second interface of the sixth steering gear is connected with a first exchange port of the air heat exchanger, a second exchange port of the air heat exchanger is connected with a first valve port of the electronic expansion valve, a second valve port of the electronic expansion valve is connected with a first exchange port of the water-fluorine heat exchanger, a second exchange port of the water-fluorine heat exchanger is connected with a fourth interface of the sixth steering gear, a third interface of the sixth steering gear is connected with an inlet of the gas-liquid separator, the fan motor is connected with the heat exchanger through a bracket, the first interface of the fifth steering gear is connected with a third exchange port of the water-fluorine heat exchanger, and the fourth interface of the water-fluorine heat exchanger is connected with a fourth exchange port of the air-fluorine heat exchanger;
further, in a heating state, a first interface of the sixth steering gear is communicated with a fourth interface of the sixth steering gear, and a second interface of the sixth steering gear is communicated with a third interface of the sixth steering gear;
and in the refrigeration and defrosting states, the first interface of the sixth steering gear is communicated with the second interface of the sixth steering gear, and the third interface of the sixth steering gear is communicated with the fourth interface of the sixth steering gear.
In another aspect, the present invention further provides a heat recovery control method for a gas heat pump, where the method includes:
if the air conditioner is in a heating or defrosting state, controlling the interfaces of the first steering gear, the second steering gear, the third steering gear, the fourth steering gear and the fifth steering gear to steer according to the temperature of cooling water in an engine cooling water system;
and if the air conditioner is in a refrigerating state, controlling the interfaces of the first steering gear, the second steering gear, the third steering gear, the fourth steering gear and the fifth steering gear to steer according to the temperature of cooling water in an engine cooling water system and the temperature of air-conditioning water in an air-conditioning water inlet.
Further, in a heating state, if the temperature of cooling water in an engine cooling water system is lower than 60 ℃, a first interface of a first steering gear is communicated with a second interface of the first steering gear, a first interface of a second steering gear is communicated with a second interface of a second steering gear, a first interface of a third steering gear is communicated with a second interface of a third steering gear, a first interface of a fourth steering gear is communicated with a second interface of a fourth steering gear, and a first interface of a fifth steering gear is communicated with a second interface of a fifth steering gear;
if the temperature of cooling water in the engine cooling water system is between 60 ℃ and 90 ℃, a first interface of a first steering gear is communicated with a second interface of the first steering gear, a first interface of a second steering gear is communicated with a third interface of the second steering gear, a first interface of a third steering gear is communicated with a second interface of a third steering gear, a first interface of a fourth steering gear is communicated with a third interface of a fourth steering gear, and a first interface of a fifth steering gear is communicated with a second interface of a fifth steering gear;
and if the temperature of the cooling water in the engine cooling water system is more than 90 ℃, the first interface of the first steering gear is communicated with the third interface of the first steering gear.
Further, in a defrosting state, if the temperature of cooling water in an engine cooling water system is less than 60 ℃, a first interface of a first steering gear is communicated with a second interface of the first steering gear, a first interface of a second steering gear is communicated with a second interface of the second steering gear, a first interface of a third steering gear is communicated with a second interface of a third steering gear, a first interface of a fourth steering gear is communicated with a second interface of a fourth steering gear, and a first interface of a fifth steering gear is communicated with a second interface of a fifth steering gear;
if the temperature of cooling water in the engine cooling water system is between 60 ℃ and 90 ℃, a first interface of a first steering gear is communicated with a second interface of the first steering gear, a first interface of a second steering gear is communicated with a second interface of the second steering gear, a first interface of a third steering gear is communicated with a third interface of a third steering gear, a first interface of a fourth steering gear is communicated with a second interface of a fourth steering gear, and a first interface of a fifth steering gear is communicated with a third interface of a fifth steering gear;
and if the temperature of the cooling water in the engine cooling water system is higher than 90 ℃, the first interface of the first steering gear is communicated with the third interface of the first steering gear.
Further, in a refrigeration state, if the temperature of cooling water in an engine cooling water system is less than 90 ℃ and the temperature of air conditioner water in an air conditioner water inlet is less than or equal to 2 ℃, a first interface of the first steering gear is communicated with a second interface of the first steering gear, a first interface of the second steering gear is communicated with a second interface of the second steering gear, a first interface of the third steering gear is communicated with a third interface of the third steering gear, a first interface of the fourth steering gear is communicated with a second interface of the fourth steering gear, and a first interface of the fifth steering gear is communicated with a third interface of the fifth steering gear;
if the temperature of cooling water in an engine cooling water system is less than 90 ℃ and the temperature of air conditioner water in an air conditioner water inlet is more than 5 ℃, a first interface of a first steering gear is communicated with a second interface of the first steering gear, a first interface of a second steering gear is communicated with a second interface of a second steering gear, a first interface of a third steering gear is communicated with a second interface of a third steering gear, a first interface of a fourth steering gear is communicated with a second interface of a fourth steering gear, and a first interface of a fifth steering gear is communicated with a second interface of a fifth steering gear;
if the temperature of cooling water in an engine cooling water system is less than 90 ℃, and the temperature of air-conditioning water in an air-conditioning water inlet is adjusted to be more than 2 ℃ from being less than or equal to 2 ℃ and less than or equal to 5 ℃, a first interface of a first steering gear is communicated with a second interface of the first steering gear, a first interface of a second steering gear is communicated with a second interface of the second steering gear, a first interface of a third steering gear is communicated with a third interface of a third steering gear, a first interface of a fourth steering gear is communicated with a second interface of a fourth steering gear, and a first interface of a fifth steering gear is communicated with a third interface of a fifth steering gear;
if the temperature of cooling water in the engine cooling water system is less than 90 ℃, and the temperature of air conditioner water in the air conditioner water inlet is adjusted to be more than 2 ℃ from more than 5 ℃ and is less than or equal to 5 ℃, the first interface of the first steering gear is communicated with the second interface of the first steering gear, the first interface of the second steering gear is communicated with the second interface of the second steering gear, the first interface of the third steering gear is communicated with the second interface of the third steering gear, the first interface of the fourth steering gear is communicated with the second interface of the fourth steering gear, and the first interface of the fifth steering gear is communicated with the second interface of the fifth steering gear.
Further, in a refrigeration state, if the temperature of cooling water in the engine cooling water system is greater than 95 ℃, the first interface of the first steering gear is communicated with the third interface of the first steering gear.
Further, in a refrigeration state, if the temperature of cooling water in the engine cooling water system is adjusted from 90 ℃ to 95 ℃, and the temperature of air-conditioning water in an air-conditioning water inlet is less than or equal to 2 ℃, a first interface of the first steering gear is communicated with a second interface of the first steering gear, a first interface of the second steering gear is communicated with a second interface of the second steering gear, a first interface of the third steering gear is communicated with a third interface of the third steering gear, a first interface of the fourth steering gear is communicated with a second interface of the fourth steering gear, and a first interface of the fifth steering gear is communicated with a third interface of the fifth steering gear;
if the temperature of cooling water in an engine cooling water system is adjusted to 90-95 ℃ from less than 90 ℃ and the temperature of air-conditioning water in an air-conditioning water inlet is greater than 5 ℃, a first interface of a first steering gear is communicated with a second interface of the first steering gear, a first interface of a second steering gear is communicated with a second interface of the second steering gear, a first interface of a third steering gear is communicated with a second interface of a third steering gear, a first interface of a fourth steering gear is communicated with a second interface of a fourth steering gear, and a first interface of a fifth steering gear is communicated with a second interface of a fifth steering gear;
if the temperature of cooling water in an engine cooling water system is adjusted to be between 90 ℃ and 95 ℃ from less than 90 ℃, and the temperature of air-conditioning water in an air-conditioning water inlet is adjusted to be greater than 2 ℃ from less than or equal to 2 ℃ and less than or equal to 5 ℃, a first interface of a first steering gear is communicated with a second interface of the first steering gear, a first interface of a second steering gear is communicated with a second interface of the second steering gear, a first interface of a third steering gear is communicated with a third interface of a third steering gear, a first interface of a fourth steering gear is communicated with a second interface of a fourth steering gear, and a first interface of a fifth steering gear is communicated with a third interface of a fifth steering gear;
if the temperature of cooling water in the engine cooling water system is adjusted to be between 90 ℃ and 95 ℃ from less than 90 ℃, and the temperature of air-conditioning water in an air-conditioning water inlet is adjusted to be greater than 2 ℃ from greater than 5 ℃ and is less than or equal to 5 ℃, a first interface of the first steering gear is communicated with a second interface of the first steering gear, a first interface of the second steering gear is communicated with a second interface of the second steering gear, a first interface of the third steering gear is communicated with a second interface of the third steering gear, a first interface of the fourth steering gear is communicated with a second interface of the fourth steering gear, and a first interface of the fifth steering gear is communicated with a second interface of the fifth steering gear.
Further, in a refrigeration state, if the temperature of cooling water in the engine cooling water system is adjusted from more than 95 ℃ to 90 ℃ to 95 ℃, the first interface of the first steering gear is communicated with the third interface of the first steering gear.
Further, the first diverter, the second diverter, the third diverter, the fourth diverter and the fifth diverter are all three-way valves, and the sixth diverter is a four-way valve.
Compared with the prior art, the invention has the following beneficial effects:
the heat recovery system is arranged, the engine cooling water system is connected with the heat recovery system, and the heat exchange positions are changed by adjusting the communication relation among the interfaces of the first steering gear, the interfaces of the second steering gear, the interfaces of the third steering gear, the interfaces of the fourth steering gear and the interfaces of the fifth steering gear according to different states and temperatures, so that the heating efficiency is improved, and the loss of effective heat is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a gas heat pump heat recovery device according to an embodiment of the present invention;
in the figure: 1. a compressor; 2. an oil separator; 3. a sixth diverter; 4. a water fluorine heat exchanger; 5. an electronic expansion valve; 6. an air heat exchanger; 7. a gas-liquid separator; 8. an engine; 9. a first steering gear; 10. a heat sink; 11. a cooling water pump; 12. a heat recovery device; 13. a second diverter; 14. a third diverter; 15. a fourth diverter; 16. a fifth diverter; 17. a fan motor.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Example 1:
as shown in fig. 1, a gas heat pump heat recovery device provided by an embodiment of the present invention includes a heat recovery system and an engine 8 cooling water system;
the heat recovery system comprises a steering assembly and a heat recoverer 12, the steering assembly comprises a second steering gear 13, a third steering gear 14, a fourth steering gear 15 and a fifth steering gear 16, a first interface of the second steering gear 13 is connected with an air conditioner water outlet through a pipeline, a second interface of the second steering gear 13 is connected with a second interface of the fourth steering gear 15 through a pipeline, a first interface of the third steering gear 14 is connected with an air conditioner water inlet through a pipeline, a second interface of the third steering gear 14 is connected with a second interface of the fifth steering gear 16 through a pipeline, a third interface of the second steering gear 13 is connected with a third interface of the third steering gear 14 through a pipeline and then is connected with a first air conditioner water passage port of the heat recoverer 12 again, and a third interface of the fourth steering gear 15 is connected with a third interface of the fifth steering gear 16 through a pipeline and then is connected with a second air conditioner water passage port of the heat recoverer 12 again; the cooling water system of the engine 8 comprises an engine 8, a cooling water pump 11, a first steering gear 9 and a radiator 10, wherein an outlet of the cooling water pump 11 is connected with a cooling water inlet of the engine 8 through a pipeline, a cooling water outlet of the engine 8 is connected with a first interface of the first steering gear 9 through a pipeline, a second interface of the first steering gear 9 is connected with a cooling water inlet of a heat recoverer 12 through a pipeline, a cooling water outlet of the heat recoverer 12 is connected with an inlet of the cooling water pump 11 through a pipeline, a third interface of the first steering gear 9 is connected with an inlet of the radiator 10 through a pipeline, and an outlet of the radiator 10 is connected with an inlet of the cooling water pump 11 through a pipeline.
The gas heat pump heat recovery device provided by the embodiment of the invention further comprises a conversion system, the conversion system comprises a compressor 1, a gas-liquid separator 7, an oil separator 2, a sixth steering gear 3, an air heat exchanger 6, a fan motor 17, an electronic expansion valve 5 and a water-fluorine heat exchanger 4, the engine 8 is in transmission connection with the compressor 1 through a belt, an outlet of the compressor 1 is connected with an inlet of the oil separator 2, an outlet of the oil separator 2 is connected with a first port of the sixth steering gear 3, an oil discharge port of the oil separator 2 is connected with an outlet of the gas-liquid separator 7 and then connected with an inlet of the compressor 1, a second port of the sixth steering gear 3 is connected with a first port of the air heat exchanger 6, a second port of the air heat exchanger 6 is connected with a first port of the electronic expansion valve 5, a second port of the electronic expansion valve 5 is connected with a first port of the water-fluorine heat exchanger 4, a second port of the water-fluorine heat exchanger 4 is connected with a fourth port of the sixth steering gear 3, a third port of the sixth steering gear 3 is connected with a fourth port of the air-liquid exchanger 4, a third port of the air heat exchanger 7 is connected with a fourth port of the air-fluorine heat exchanger 4, and a fifth steering gear 16 are connected with a water-fluorine heat exchanger 4 through a third port of the air heat exchanger support 15, and a fifth fluorine heat exchanger 6.
Example 2:
the invention also provides a heat recovery control method for the gas heat pump, which comprises the following steps:
if the air conditioner is in a heating or defrosting state, controlling the interfaces of the first steering gear 9, the second steering gear 13, the third steering gear 14, the fourth steering gear 15 and the fifth steering gear 16 to steer according to the temperature of cooling water in an engine cooling water system;
and if the air conditioner is in a cooling state, controlling the interfaces of the first steering gear 9, the second steering gear 13, the third steering gear 14, the fourth steering gear 15 and the fifth steering gear 16 to steer according to the temperature of cooling water in an engine cooling water system and the temperature of air-conditioning water in an air-conditioning water inlet.
Specifically, in the heating state:
the first port of the sixth diverter 3 is communicated with the fourth port of the sixth diverter 3, the second port of the sixth diverter 3 is communicated with the third port of the sixth diverter 3, specifically, the compressor 1 compresses the low-temperature low-pressure gaseous refrigerant into the high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant enters the inlet of the oil separator 2 from the outlet of the compressor 1, the lubricating oil carried by the high-temperature high-pressure gaseous refrigerant and the high-temperature high-pressure gaseous refrigerant is separated in the oil separator 2, the high-temperature high-pressure gaseous refrigerant enters the second exchange port of the water-fluorine heat exchanger 4 from the outlet of the oil separator 2 through the sixth diverter 3, the lubricating oil enters the inlet of the compressor 1 from the oil discharge port of the oil separator 2, and the high-temperature high-pressure gaseous refrigerant exchanges heat with the air-conditioning water in the heat recovery system in the water-fluorine heat exchanger 4 and is condensed into the medium-temperature medium-pressure liquid refrigerant, the liquid refrigerant of middle temperature and pressure enters the second valve port of the electronic expansion valve 5 from the first exchange port of the water-fluorine heat exchanger 4, the liquid refrigerant of middle temperature and pressure is throttled into a gas-liquid two-phase refrigerant of low temperature and pressure by the electronic expansion valve 5 and enters the second exchange port of the air heat exchanger 6 from the first valve port of the electronic expansion valve 5, the gas-liquid two-phase refrigerant of low temperature and pressure exchanges heat with air in the air heat exchanger 6 and evaporates into a gas refrigerant of low temperature and pressure, the gas refrigerant of low temperature and pressure enters the inlet of the gas-liquid separator 7 from the first exchange port of the air heat exchanger 6 through the four-way valve, because the air heat exchanger 6 can not completely convert the gas-liquid two-phase refrigerant of low temperature and pressure into the gas refrigerant of low temperature and pressure, therefore, the gas refrigerant of low temperature and pressure also mixes a small amount of liquid refrigerant of low temperature and pressure, the low-temperature low-pressure gas refrigerant and a small amount of low-temperature low-pressure liquid refrigerant are separated in the gas-liquid separator 7, the low-temperature low-pressure gas refrigerant enters the compressor 1, and the small amount of low-temperature low-pressure liquid refrigerant remains in the gas-liquid separator 7.
It should be noted that, in a heating state, if the temperature of cooling water in a cooling water system of the engine 8 is less than 60 ℃, the first interface of the first steering gear 9 is communicated with the second interface of the first steering gear 9, the first interface of the second steering gear 13 is communicated with the second interface of the second steering gear 13, the first interface of the third steering gear 14 is communicated with the second interface of the third steering gear 14, the first interface of the fourth steering gear 15 is communicated with the second interface of the fourth steering gear 15, the first interface of the fifth steering gear 16 is communicated with the second interface of the fifth steering gear 16, and the cooling water in the cooling water system of the engine 8 does not undergo any heat exchange, so that the working efficiency of the engine 8 is prevented from being affected by too low temperature;
if the temperature of the cooling water in the cooling water system of the engine 8 is between 60 ℃ and 90 ℃, the first interface of the first steering gear 9 is communicated with the second interface of the first steering gear 9, the first interface of the second steering gear 13 is communicated with the third interface of the second steering gear 13, the first interface of the third steering gear 14 is communicated with the second interface of the third steering gear 14, the first interface of the fourth steering gear 15 is communicated with the third interface of the fourth steering gear 15, the first interface of the fifth steering gear 16 is communicated with the second interface of the fifth steering gear 16, the cooling water in the cooling water system of the engine 8 and the air conditioning water in the heat recovery system exchange heat in the heat recovery device 12, the outlet water temperature of the air conditioning water is further improved, the heating efficiency is improved, and the loss of effective heat is avoided;
if the temperature of the cooling water in the cooling water system of the engine 8 is higher than 90 ℃, the first interface of the first steering gear 9 is communicated with the third interface of the first steering gear 9, and at the moment, the cooling water in the cooling water system of the engine 8 is rapidly cooled through the radiator 10, so that the temperature of the cooling water in the cooling water system of the engine 8 is prevented from being continuously increased and damaging the engine 8.
In the defrosting state:
the first port of the sixth diverter 3 is communicated with the second port of the sixth diverter 3, the third port of the sixth diverter 3 is communicated with the fourth port of the sixth diverter 3, specifically, the compressor 1 compresses the low-temperature and low-pressure gaseous refrigerant into high-temperature and high-pressure gaseous refrigerant, the high-temperature and high-pressure gaseous refrigerant enters the inlet of the oil separator 2 from the outlet of the compressor 1, the high-temperature and high-pressure gaseous refrigerant and the lubricating oil carried by the high-temperature and high-pressure gaseous refrigerant are separated in the oil separator 2, the high-temperature and high-pressure gaseous refrigerant enters the first exchange port of the air heat exchanger 6 from the outlet of the oil separator 2 through the four-way valve, the lubricating oil enters the inlet of the compressor 1 from the oil discharge port of the oil separator 2, and the high-temperature and high-pressure gaseous refrigerant exchanges heat with air in the air heat exchanger 6 and is condensed into medium-temperature and medium-pressure liquid refrigerant, the liquid refrigerant of middle temperature and middle pressure enters the first valve port of the electronic expansion valve 5 from the second exchange port of the air heat exchanger 6, the liquid refrigerant of middle temperature and middle pressure is throttled in the electronic expansion valve 5 into low temperature and low pressure gas-liquid two-phase refrigerant and enters the first exchange port of the water-fluorine heat exchanger 4 from the second valve port of the electronic expansion valve 5, the low temperature and low pressure gas-liquid two-phase refrigerant exchanges heat with the air conditioning water in the heat recovery system in the water-fluorine heat exchanger 4 and evaporates into low temperature and low pressure gas refrigerant, the low temperature and low pressure gas refrigerant enters the inlet of the gas-liquid separator 7 from the second exchange port of the water-fluorine heat exchanger 4 after passing through the four-way valve, because the water-fluorine heat exchanger 4 can not completely convert the low temperature gas-liquid two-phase refrigerant into the low temperature and low pressure gas refrigerant, the low temperature and low pressure gas refrigerant and a small amount of low temperature and low pressure liquid refrigerant are separated in the gas-liquid separator 7, the low-temperature low-pressure gas refrigerant enters the compressor 1, and a small amount of low-temperature low-pressure liquid refrigerant remains in the gas-liquid separator 7.
It should be noted that, in the defrosting state, if the temperature of the cooling water in the cooling water system of the engine 8 is lower than 60 ℃, the first interface of the first steering gear 9 is communicated with the second interface of the first steering gear 9, the first interface of the second steering gear 13 is communicated with the second interface of the second steering gear 13, the first interface of the third steering gear 14 is communicated with the second interface of the third steering gear 14, the first interface of the fourth steering gear 15 is communicated with the second interface of the fourth steering gear 15, the first interface of the fifth steering gear 16 is communicated with the second interface of the fifth steering gear 16, and the cooling water in the cooling water system of the engine 8 does not undergo any heat exchange, so that the working efficiency of the engine 8 is prevented from being affected by too low temperature;
if the temperature of the cooling water in the cooling water system of the engine 8 is between 60 ℃ and 90 ℃, the first interface of the first steering gear 9 is communicated with the second interface of the first steering gear 9, the first interface of the second steering gear 13 is communicated with the second interface of the second steering gear 13, the first interface of the third steering gear 14 is communicated with the third interface of the third steering gear 14, the first interface of the fourth steering gear 15 is communicated with the second interface of the fourth steering gear 15, the first interface of the fifth steering gear 16 is communicated with the third interface of the fifth steering gear 16, the cooling water in the cooling water system of the engine 8 and the air conditioning water in the heat recovery system exchange heat in the heat recovery device 12, so that the water inlet temperature of the air conditioning water is further increased, the frost cracking of the water-fluorine heat exchanger 4 caused by the excessively low water inlet temperature of the air conditioning water during defrosting can be prevented, meanwhile, the defrosting speed can be increased, and the heating efficiency can be improved, and the loss of effective heat can be avoided;
if the temperature of the cooling water in the cooling water system of the engine 8 is higher than 90 ℃, the first interface of the first steering gear 9 is communicated with the third interface of the first steering gear 9, and at the moment, the cooling water in the cooling water system of the engine 8 is rapidly cooled through the radiator 10, so that the temperature of the cooling water in the cooling water system of the engine 8 is prevented from being continuously increased and damaging the engine 8.
In a refrigerating state:
the first port of the sixth diverter 3 is communicated with the second port of the sixth diverter 3, the third port of the sixth diverter 3 is communicated with the fourth port of the sixth diverter 3, specifically, the compressor 1 compresses the low-temperature low-pressure gaseous refrigerant into the high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant enters the inlet of the oil separator 2 from the outlet of the compressor 1, the lubricating oil carried by the high-temperature high-pressure gaseous refrigerant and the high-temperature high-pressure gaseous refrigerant is separated in the oil separator 2, the high-temperature high-pressure gaseous refrigerant enters the first exchange port of the air heat exchanger 6 from the outlet of the oil separator 2 through the four-way valve, the lubricating oil enters the inlet of the compressor 1 from the oil outlet of the oil separator 2, and the high-temperature high-pressure gaseous refrigerant exchanges heat with air in the air heat exchanger 6 and is condensed into the medium-temperature medium-pressure liquid refrigerant, the liquid refrigerant of middle temperature and middle pressure enters the first valve port of the electronic expansion valve 5 from the second exchange port of the air heat exchanger 6, the liquid refrigerant of middle temperature and middle pressure is throttled in the electronic expansion valve 5 into low temperature and low pressure gas-liquid two-phase refrigerant and enters the first exchange port of the water-fluorine heat exchanger 4 from the second valve port of the electronic expansion valve 5, the low temperature and low pressure gas-liquid two-phase refrigerant exchanges heat with the air conditioning water in the heat recovery system in the water-fluorine heat exchanger 4 and evaporates into low temperature and low pressure gas refrigerant, the low temperature and low pressure gas refrigerant enters the inlet of the gas-liquid separator 7 from the second exchange port of the water-fluorine heat exchanger 4 after passing through the four-way valve, because the water-fluorine heat exchanger 4 can not completely convert the low temperature gas-liquid two-phase refrigerant into the low temperature and low pressure gas refrigerant, the low temperature and low pressure gas refrigerant and a small amount of low temperature and low pressure liquid refrigerant are separated in the gas-liquid separator 7, the low-temperature low-pressure gas refrigerant enters the compressor 1, and a small amount of low-temperature low-pressure liquid refrigerant remains in the gas-liquid separator 7.
It should be noted that, in a refrigeration state, if the temperature of cooling water in a cooling water system of the engine 8 is less than 90 ℃ and the temperature of air-conditioning water in an air-conditioning water inlet is less than or equal to 2 ℃, the first interface of the first diverter 9 is communicated with the second interface of the first diverter 9, the first interface of the second diverter 13 is communicated with the second interface of the second diverter 13, the first interface of the third diverter 14 is communicated with the third interface of the third diverter 14, the first interface of the fourth diverter 15 is communicated with the second interface of the fourth diverter 15, the first interface of the fifth diverter 16 is communicated with the third interface of the fifth diverter 16, and the cooling water in the cooling water system of the engine 8 and the air-conditioning water in the heat recovery system exchange heat in the heat recoverer 12, so that the water inlet temperature of the air-conditioning water is further increased, and the water inlet temperature of the air-conditioning water is prevented from being too low to be frozen;
if the temperature of the cooling water in the cooling water system of the engine 8 is less than 90 ℃ and the temperature of the air-conditioning water in the air-conditioning water inlet is greater than 5 ℃, the first interface of the first diverter 9 is communicated with the second interface of the first diverter 9, the first interface of the second diverter 13 is communicated with the second interface of the second diverter 13, the first interface of the third diverter 14 is communicated with the second interface of the third diverter 14, the first interface of the fourth diverter 15 is communicated with the second interface of the fourth diverter 15, the first interface of the fifth diverter 16 is communicated with the second interface of the fifth diverter 16, and the cooling water in the cooling water system of the engine 8 does not undergo any heat exchange;
if the temperature of cooling water in a cooling water system of the engine 8 is less than 90 ℃, and the temperature of air-conditioning water in an air-conditioning water inlet is adjusted to be more than 2 ℃ from being less than or equal to 2 ℃ and less than or equal to 5 ℃, a first interface of a first steering gear 9 is communicated with a second interface of the first steering gear 9, a first interface of a second steering gear 13 is communicated with a second interface of the second steering gear 13, a first interface of a third steering gear 14 is communicated with a third interface of a third steering gear 14, a first interface of a fourth steering gear 15 is communicated with a second interface of a fourth steering gear 15, a first interface of a fifth steering gear 16 is communicated with a third interface of a fifth steering gear 16, heat exchange is carried out between the cooling water in the cooling water system of the engine 8 and the air-conditioning water in a heat recovery system in the heat recoverer 12, the inlet water temperature of the air-conditioning water is further increased, and the freezing caused by the over-low inlet temperature of the air-conditioning water is avoided;
if the temperature of the cooling water in the cooling water system of the engine 8 is less than 90 ℃, and the temperature of the air-conditioning water in the water inlet of the air conditioner is adjusted to be greater than 2 ℃ from greater than 5 ℃ and less than or equal to 5 ℃, the first interface of the first diverter 9 is communicated with the second interface of the first diverter 9, the first interface of the second diverter 13 is communicated with the second interface of the second diverter 13, the first interface of the third diverter 14 is communicated with the second interface of the third diverter 14, the first interface of the fourth diverter 15 is communicated with the second interface of the fourth diverter 15, the first interface of the fifth diverter 16 is communicated with the second interface of the fifth diverter 16, and the cooling water in the cooling water system of the engine 8 does not undergo any heat exchange.
If the temperature of the cooling water in the cooling water system of the engine 8 is higher than 95 ℃, the first interface of the first steering gear 9 is communicated with the third interface of the first steering gear 9, and at the moment, the cooling water in the cooling water system of the engine 8 is rapidly cooled through the radiator 10, so that the temperature of the cooling water in the cooling water system of the engine 8 is prevented from being continuously increased and damaging the engine 8.
If the temperature of the cooling water in the cooling water system of the engine 8 is adjusted from 90 ℃ to 95 ℃, and the temperature of the air-conditioning water in the water inlet of the air conditioner is less than or equal to 2 ℃, the first interface of the first steering gear 9 is communicated with the second interface of the first steering gear 9, the first interface of the second steering gear 13 is communicated with the second interface of the second steering gear 13, the first interface of the third steering gear 14 is communicated with the third interface of the third steering gear 14, the first interface of the fourth steering gear 15 is communicated with the second interface of the fourth steering gear 15, the first interface of the fifth steering gear 16 is communicated with the third interface of the fifth steering gear 16, the cooling water in the cooling water system of the engine 8 and the air-conditioning water in the heat recovery system exchange heat in the heat recovery device 12, the water inlet temperature of the air-conditioning water is further increased, and the water inlet temperature of the air-conditioning water is prevented from being too low and freezing;
if the temperature of cooling water in a cooling water system of the engine 8 is adjusted to 90-95 ℃ from less than 90 ℃ and the temperature of air-conditioning water in an air-conditioning water inlet is greater than 5 ℃, a first interface of the first diverter 9 is communicated with a second interface of the first diverter 9, a first interface of the second diverter 13 is communicated with a second interface of the second diverter 13, a first interface of the third diverter 14 is communicated with a second interface of the third diverter 14, a first interface of the fourth diverter 15 is communicated with a second interface of the fourth diverter 15, a first interface of the fifth diverter 16 is communicated with a second interface of the fifth diverter 16, and the cooling water in the cooling water system of the engine 8 does not undergo any heat exchange;
if the temperature of cooling water in a cooling water system of the engine 8 is adjusted from 90 ℃ to 95 ℃, and the temperature of air-conditioning water in an air-conditioning water inlet is adjusted from 2 ℃ or lower to 2 ℃ or higher and is less than or equal to 5 ℃, a first interface of the first diverter 9 is communicated with a second interface of the first diverter 9, a first interface of the second diverter 13 is communicated with a second interface of the second diverter 13, a first interface of the third diverter 14 is communicated with a third interface of the third diverter 14, a first interface of the fourth diverter 15 is communicated with a second interface of the fourth diverter 15, a first interface of the fifth diverter 16 is communicated with a third interface of the fifth diverter 16, the cooling water in the cooling water system of the engine 8 and the air-conditioning water in the heat recovery system perform heat exchange in the heat recoverer 12, so that the temperature of inlet water of the air-conditioning water is further increased, and the freezing caused by the too low temperature of the inlet water of the air-conditioning water is avoided;
if the temperature of the cooling water in the cooling water system of the engine 8 is adjusted from 90 ℃ to 95 ℃, and the temperature of the air-conditioning water in the water inlet of the air conditioner is adjusted from 5 ℃ to more than 2 ℃ and less than or equal to 5 ℃, the first interface of the first diverter 9 is communicated with the second interface of the first diverter 9, the first interface of the second diverter 13 is communicated with the second interface of the second diverter 13, the first interface of the third diverter 14 is communicated with the second interface of the third diverter 14, the first interface of the fourth diverter 15 is communicated with the second interface of the fourth diverter 15, the first interface of the fifth diverter 16 is communicated with the second interface of the fifth diverter 16, and the cooling water in the cooling water system of the engine 8 does not undergo any heat exchange.
If the temperature of the cooling water in the cooling water system of the engine 8 is adjusted from more than 95 ℃ to 90 ℃ to 95 ℃, the first interface of the first steering gear 9 is communicated with the third interface of the first steering gear 9, and at the moment, the cooling water in the cooling water system of the engine 8 is rapidly cooled through the radiator 10, so that the temperature of the cooling water in the cooling water system of the engine 8 is prevented from being continuously increased to damage the engine 8.
In the embodiment provided by the present invention, the first interface of the first steering gear 9, the second steering gear 13, the third steering gear 14, the fourth steering gear 15 and the fifth steering gear 16 corresponds to the interface a in the drawing, the second interface of the first steering gear 9, the second steering gear 13, the third steering gear 14, the fourth steering gear 15 and the fifth steering gear 16 corresponds to the interface B in the drawing, the third interface of the first steering gear 9, the second steering gear 13, the third steering gear 14, the fourth steering gear 15 and the fifth steering gear 16 corresponds to the interface C in the drawing, the first interface of the sixth steering gear 3 corresponds to the interface D in the drawing, the second interface of the sixth steering gear 3 corresponds to the interface E in the drawing, the third interface of the sixth steering gear 3 corresponds to the interface S in the drawing, and the fourth interface of the sixth steering gear 3 corresponds to the interface F in the drawing.
In the embodiment provided by the invention, the first diverter 9, the second diverter 13, the third diverter 14, the fourth diverter 15 and the fifth diverter 16 can be three-way valves, and the sixth diverter 3 can be a four-way valve. According to the invention, the heat exchange positions are changed by adjusting the communication relation among the interfaces of the first steering gear 9, the interfaces of the second steering gear 13, the interfaces of the third steering gear 14, the interfaces of the fourth steering gear 15 and the interfaces of the fifth steering gear 16 according to different states and temperatures, so that the heating efficiency is improved, and the loss of effective heat is avoided.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (11)
1. The heat recovery device of the gas heat pump is characterized by comprising a heat recovery system and an engine cooling water system, wherein the heat recovery system comprises a steering component and a heat recoverer, the steering component comprises a second steering gear, a third steering gear, a fourth steering gear and a fifth steering gear, a first interface of the second steering gear is connected with an air conditioner water outlet, a second interface of the second steering gear is connected with a second interface of the fourth steering gear, a first interface of the third steering gear is connected with an air conditioner water inlet, a second interface of the third steering gear is connected with a second interface of the fifth steering gear, a third interface of the second steering gear is connected with a third interface of the third steering gear and then connected with a first air conditioner water passage port of the heat recoverer, and a third interface of the fourth steering gear is connected with a third interface of the fifth steering gear and then connected with a second air conditioner water passage port of the heat recoverer;
the engine cooling water system comprises an engine, a cooling water pump, a first steering gear and a radiator, wherein an outlet of the cooling water pump is connected with a cooling water inlet of the engine, a cooling water outlet of the engine is connected with a first interface of the first steering gear, a second interface of the first steering gear is connected with a cooling water inlet of a heat recoverer, a cooling water outlet of the heat recoverer is connected with an inlet of the cooling water pump, a third interface of the first steering gear is connected with an inlet of the radiator, and an outlet of the radiator is connected with an inlet of the cooling water pump.
2. The gas heat pump heat recovery device according to claim 1, further comprising a switching system, wherein the switching system comprises a compressor, a gas-liquid separator, an oil separator, a sixth diverter, an air heat exchanger, a fan motor, an electronic expansion valve and a water-fluorine heat exchanger, the engine is in transmission connection with the compressor through a belt, an outlet of the compressor is connected with an inlet of the oil separator, an outlet of the oil separator is connected with a first port of the sixth diverter, an oil outlet of the oil separator is connected with an outlet of the gas-liquid separator and then connected with an inlet of the compressor, a second port of the sixth diverter is connected with a first port of the air heat exchanger, a second port of the air heat exchanger is connected with a first port of the electronic expansion valve, a second port of the electronic expansion valve is connected with a first port of the water-fluorine heat exchanger, a second port of the water-fluorine heat exchanger is connected with a fourth port of the sixth diverter, a third port of the sixth diverter is connected with an inlet of the gas-liquid separator, the fan motor is connected with the air heat exchanger through a bracket, and the first port of the fifth diverter is connected with a fourth port of the water-fluorine heat exchanger.
3. The gas heat pump heat recovery device of claim 2, wherein in the heating state, the first port of the sixth diverter is communicated with the fourth port of the sixth diverter, and the second port of the sixth diverter is communicated with the third port of the sixth diverter;
and in the refrigeration and defrosting states, the first interface of the sixth steering gear is communicated with the second interface of the sixth steering gear, and the third interface of the sixth steering gear is communicated with the fourth interface of the sixth steering gear.
4. A method of controlling heat recovery in a gas heat pump, the method comprising:
if the air conditioner is in a heating or defrosting state, controlling the interface steering of the first steering gear, the second steering gear, the third steering gear, the fourth steering gear and the fifth steering gear according to the temperature of cooling water in an engine cooling water system;
and if the air conditioner is in a refrigerating state, controlling the interfaces of the first steering gear, the second steering gear, the third steering gear, the fourth steering gear and the fifth steering gear to steer according to the temperature of cooling water in an engine cooling water system and the temperature of air-conditioning water in an air-conditioning water inlet.
5. The gas heat pump heat recovery device of claim 4, wherein in the heating state, if the temperature of the cooling water in the engine cooling water system is less than 60 ℃, the first port of the first diverter is communicated with the second port of the first diverter, the first port of the second diverter is communicated with the second port of the second diverter, the first port of the third diverter is communicated with the second port of the third diverter, the first port of the fourth diverter is communicated with the second port of the fourth diverter, and the first port of the fifth diverter is communicated with the second port of the fifth diverter;
if the temperature of cooling water in the engine cooling water system is between 60 ℃ and 90 ℃, a first interface of a first steering gear is communicated with a second interface of the first steering gear, a first interface of a second steering gear is communicated with a third interface of a second steering gear, a first interface of a third steering gear is communicated with a second interface of a third steering gear, a first interface of a fourth steering gear is communicated with a third interface of a fourth steering gear, and a first interface of a fifth steering gear is communicated with a second interface of a fifth steering gear;
and if the temperature of the cooling water in the engine cooling water system is more than 90 ℃, the first interface of the first steering gear is communicated with the third interface of the first steering gear.
6. The gas heat pump heat recovery device of claim 4, wherein in a defrosting state, if the temperature of cooling water in the engine cooling water system is less than 60 ℃, the first port of the first diverter is communicated with the second port of the first diverter, the first port of the second diverter is communicated with the second port of the second diverter, the first port of the third diverter is communicated with the second port of the third diverter, the first port of the fourth diverter is communicated with the second port of the fourth diverter, and the first port of the fifth diverter is communicated with the second port of the fifth diverter;
if the temperature of cooling water in the engine cooling water system is between 60 ℃ and 90 ℃, a first interface of a first steering gear is communicated with a second interface of the first steering gear, a first interface of a second steering gear is communicated with a second interface of the second steering gear, a first interface of a third steering gear is communicated with a third interface of a third steering gear, a first interface of a fourth steering gear is communicated with a second interface of a fourth steering gear, and a first interface of a fifth steering gear is communicated with a third interface of a fifth steering gear;
and if the temperature of the cooling water in the engine cooling water system is more than 90 ℃, the first interface of the first steering gear is communicated with the third interface of the first steering gear.
7. The gas heat pump heat recovery device of claim 4, wherein in a refrigeration state, if the temperature of cooling water in the engine cooling water system is less than 90 ℃ and the temperature of air-conditioning water in the air-conditioning water inlet is less than or equal to 2 ℃, the first port of the first diverter is communicated with the second port of the first diverter, the first port of the second diverter is communicated with the second port of the second diverter, the first port of the third diverter is communicated with the third port of the third diverter, the first port of the fourth diverter is communicated with the second port of the fourth diverter, and the first port of the fifth diverter is communicated with the third port of the fifth diverter;
if the temperature of cooling water in an engine cooling water system is less than 90 ℃ and the temperature of air conditioner water in an air conditioner water inlet is more than 5 ℃, a first interface of a first steering gear is communicated with a second interface of the first steering gear, a first interface of a second steering gear is communicated with a second interface of a second steering gear, a first interface of a third steering gear is communicated with a second interface of a third steering gear, a first interface of a fourth steering gear is communicated with a second interface of a fourth steering gear, and a first interface of a fifth steering gear is communicated with a second interface of a fifth steering gear;
if the temperature of cooling water in an engine cooling water system is less than 90 ℃, and the temperature of air-conditioning water in an air-conditioning water inlet is adjusted to be more than 2 ℃ from being less than or equal to 2 ℃ and less than or equal to 5 ℃, a first interface of a first steering gear is communicated with a second interface of the first steering gear, a first interface of a second steering gear is communicated with a second interface of the second steering gear, a first interface of a third steering gear is communicated with a third interface of a third steering gear, a first interface of a fourth steering gear is communicated with a second interface of a fourth steering gear, and a first interface of a fifth steering gear is communicated with a third interface of a fifth steering gear;
if the temperature of cooling water in the engine cooling water system is less than 90 ℃, and the temperature of air conditioner water in the air conditioner water inlet is adjusted to be more than 2 ℃ from more than 5 ℃ and is less than or equal to 5 ℃, the first interface of the first steering gear is communicated with the second interface of the first steering gear, the first interface of the second steering gear is communicated with the second interface of the second steering gear, the first interface of the third steering gear is communicated with the second interface of the third steering gear, the first interface of the fourth steering gear is communicated with the second interface of the fourth steering gear, and the first interface of the fifth steering gear is communicated with the second interface of the fifth steering gear.
8. The gas heat pump heat recovery device according to claim 7, wherein the first port of the first diverter is communicated with the third port of the first diverter when the temperature of cooling water in the engine cooling water system is greater than 95 ℃ in a cooling state.
9. The gas heat pump heat recovery device of claim 8, wherein in a cooling state, if the temperature of cooling water in the engine cooling water system is adjusted from 90 ℃ to 95 ℃ and the temperature of air-conditioning water in the air-conditioning water inlet is less than or equal to 2 ℃, the first port of the first diverter is communicated with the second port of the first diverter, the first port of the second diverter is communicated with the second port of the second diverter, the first port of the third diverter is communicated with the third port of the third diverter, the first port of the fourth diverter is communicated with the second port of the fourth diverter, and the first port of the fifth diverter is communicated with the third port of the fifth diverter;
if the temperature of cooling water in an engine cooling water system is adjusted to 90-95 ℃ from less than 90 ℃ and the temperature of air-conditioning water in an air-conditioning water inlet is greater than 5 ℃, a first interface of a first steering gear is communicated with a second interface of the first steering gear, a first interface of a second steering gear is communicated with a second interface of the second steering gear, a first interface of a third steering gear is communicated with a second interface of a third steering gear, a first interface of a fourth steering gear is communicated with a second interface of a fourth steering gear, and a first interface of a fifth steering gear is communicated with a second interface of a fifth steering gear;
if the temperature of cooling water in an engine cooling water system is adjusted to be between 90 ℃ and 95 ℃ from less than 90 ℃, and the temperature of air-conditioning water in an air-conditioning water inlet is adjusted to be greater than 2 ℃ from less than or equal to 2 ℃ and less than or equal to 5 ℃, a first interface of a first steering gear is communicated with a second interface of the first steering gear, a first interface of a second steering gear is communicated with a second interface of the second steering gear, a first interface of a third steering gear is communicated with a third interface of a third steering gear, a first interface of a fourth steering gear is communicated with a second interface of a fourth steering gear, and a first interface of a fifth steering gear is communicated with a third interface of a fifth steering gear;
if the temperature of cooling water in the engine cooling water system is adjusted to be between 90 ℃ and 95 ℃ from less than 90 ℃, and the temperature of air-conditioning water in an air-conditioning water inlet is adjusted to be greater than 2 ℃ from greater than 5 ℃ and is less than or equal to 5 ℃, a first interface of the first steering gear is communicated with a second interface of the first steering gear, a first interface of the second steering gear is communicated with a second interface of the second steering gear, a first interface of the third steering gear is communicated with a second interface of the third steering gear, a first interface of the fourth steering gear is communicated with a second interface of the fourth steering gear, and a first interface of the fifth steering gear is communicated with a second interface of the fifth steering gear.
10. The gas heat pump heat recovery device of claim 9, wherein in the cooling state, if the temperature of the cooling water in the engine cooling water system is adjusted from more than 95 ℃ to 90 ℃ to 95 ℃, the first port of the first diverter is communicated with the third port of the first diverter.
11. The gas heat pump heat recovery device of claim 3, wherein the first, second, third, fourth and fifth diverters are three-way valves, and the sixth diverter is a four-way valve.
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