CN115307338B - Heat recovery device of gas heat pump and control method - Google Patents
Heat recovery device of gas heat pump and control method Download PDFInfo
- Publication number
- CN115307338B CN115307338B CN202210967575.5A CN202210967575A CN115307338B CN 115307338 B CN115307338 B CN 115307338B CN 202210967575 A CN202210967575 A CN 202210967575A CN 115307338 B CN115307338 B CN 115307338B
- Authority
- CN
- China
- Prior art keywords
- interface
- steering gear
- communicated
- diverter
- cooling water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000011084 recovery Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 104
- 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 79
- 239000007788 liquid Substances 0.000 claims description 42
- 229910052731 fluorine Inorganic materials 0.000 claims description 27
- 239000011737 fluorine Substances 0.000 claims description 27
- 238000010257 thawing Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 description 63
- 239000007789 gas Substances 0.000 description 28
- 239000003921 oil Substances 0.000 description 28
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 12
- 239000010687 lubricating oil Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 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
- 239000010726 refrigerant oil Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- 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
-
- 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 gas heat pump heat recovery device and a control method, wherein the heat recovery device comprises a heat recovery system, the heat recovery system comprises a steering assembly and a heat recovery device, the steering assembly comprises a second steering device, a third steering device, a fourth steering device and a fifth steering device, a first interface of the second steering device is connected with an air conditioner water outlet, a second interface of the second steering device is connected with a second interface of the fourth steering device, a first interface of the third steering device is connected with an air conditioner water inlet, a second interface of the third steering device is connected with a second interface of the fifth steering device, a third interface of the second steering device is connected with a third interface of the third steering device and then is connected with a first air conditioner water channel port of the heat recovery device, and a third interface of the fourth steering device is connected with a third interface of the fifth steering device and then is connected with a second air conditioner water channel port of the heat recovery device. The invention provides a gas heat pump heat recovery device and a control method, which can change the heat exchange position according to different states and temperatures and improve the heating efficiency.
Description
Technical Field
The invention relates to a gas heat pump heat recovery device and a control method, and belongs to the technical field of gas heat pumps.
Background
The gas heat pump is an air conditioning system that performs cooling and heating by driving a compressor to operate by a gas engine. By recovering 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 heat exchange between the refrigerant and the cooling water of the gas engine, and recovers the heat 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 reduced, the evaporation pressure at the low pressure side is increased due to the large heat of the cooling water of the engine, 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 this time, the gas heat pump is not an air source heat pump, but a direct combustion engine 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 gas heat pump heat recovery device and a control method, 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:
In one aspect, the invention provides a gas heat pump heat recovery device, 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 device, a third steering device, a fourth steering device and a fifth steering device, a first interface of the second steering device is connected with an air conditioner water outlet, a second interface of the second steering device is connected with a second interface of the fourth steering device, a first interface of the third steering device is connected with an air conditioner water inlet, a second interface of the third steering device is connected with a second interface of the fifth steering device, a third interface of the second steering device is connected with a first air conditioner water channel port of the heat recoverer after being connected with a third interface of the third steering device, and a third interface of the fourth steering device is connected with a second air conditioner water channel port of the heat recoverer after being connected with a third interface of the fifth steering device;
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 recovery device, a cooling water outlet of the heat recovery device 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.
Further, the system also comprises a conversion system, wherein the conversion 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, the outlet of the compressor is connected with the inlet of the oil separator, the outlet of the oil separator is connected with the first interface of the sixth diverter, the oil outlet of the oil separator is connected with the outlet of the gas-liquid separator and then is connected with the inlet of the compressor, the second interface of the sixth diverter is connected with the first exchange port of the air heat exchanger, the second exchange port of the air heat exchanger is connected with the first valve port of the electronic expansion valve, the second valve port of the electronic expansion valve is connected with the first exchange port of the water-fluorine heat exchanger, the second exchange port of the water-fluorine heat exchanger is connected with the fourth interface of the sixth diverter, the third interface of the sixth diverter is connected with the inlet of the gas-liquid separator through a bracket, the fan motor is connected with the air heat exchanger, the first interface of the fifth diverter is connected with the third interface of the water-fluorine heat exchanger, and the fourth interface of the water-fluorine heat exchanger is connected with the fourth interface of the fourth diverter;
Further, in the heating state, the first interface of the sixth steering gear is communicated with the fourth interface of the sixth steering gear, and the second interface of the sixth steering gear is communicated with the third interface of the sixth steering gear;
in the refrigerating 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.
On the other hand, the invention also provides a heat recovery control method of the gas heat pump, which comprises the following steps:
if the engine 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 the engine cooling water system;
and if the engine 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 the engine cooling water system and the temperature of air conditioning water in the air conditioning water inlet.
Further, in the heating state, if the temperature of cooling water in the engine cooling water system is less than 60 ℃, 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;
If the temperature of cooling water in the engine cooling water system is between 60 ℃ and 90 ℃, 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 third 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 third 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;
if the temperature of cooling water in the engine cooling water system is higher than 90 ℃, the first interface of the first diverter is communicated with the third interface of the first diverter.
Further, in the defrosting state, if the temperature of cooling water in the engine cooling water system is less than 60 ℃, 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;
If the temperature of cooling water in the engine cooling water system is between 60 ℃ and 90 ℃, 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 third 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 third interface of the fifth steering gear;
if the temperature of cooling water in the engine cooling water system is higher than 90 ℃, the first interface of the first diverter is communicated with the third interface of the first diverter.
Further, in a refrigerating 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 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 third 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 third interface of the fifth steering gear;
If the temperature of cooling water in the engine cooling water system is 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 the engine cooling water system is less than 90 ℃ and the temperature of air-conditioning water in an air-conditioning water inlet is adjusted from less than or equal to 2 ℃ to more than 2 ℃ and less than or equal to 5 ℃, a first interface of a first steering gear is communicated with a second interface of a 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 third interface of the 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-conditioning water in an air-conditioning water inlet is adjusted from more than 5 ℃ to more than 2 ℃ and less than or equal to 5 ℃, a first interface of a first steering gear is communicated with a second interface of a 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.
Further, in the refrigeration state, if the temperature of cooling water in the engine cooling water system is higher than 95 ℃, the first interface of the first diverter is communicated with the third interface of the first diverter.
Further, in a refrigerating state, if the temperature of cooling water in an engine cooling water system is adjusted from less than 90 ℃ to between 90 ℃ and 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 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 the third steering gear, a first interface of a fourth steering gear is communicated with a second interface of the fourth steering gear, and a first interface of a fifth steering gear is communicated with a third interface of the fifth steering gear;
if the temperature of cooling water in the engine cooling water system is adjusted from less than 90 ℃ to between 90 ℃ and 95 ℃ 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 the third steering gear, a first interface of a fourth steering gear is communicated with a second interface of the fourth steering gear, and a first interface of a fifth steering gear is communicated with a second interface of the fifth steering gear;
If the temperature of cooling water in the engine cooling water system is adjusted from less than 90 ℃ to between 90 and 95 ℃, and the temperature of air-conditioning water in an air-conditioning water inlet is adjusted from less than or equal to 2 ℃ to more than 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 the third steering gear, a first interface of a fourth steering gear is communicated with a second interface of the fourth steering gear, and a first interface of a fifth steering gear is communicated with a third interface of the fifth steering gear;
if the temperature of cooling water in the engine cooling water system is adjusted from less than 90 ℃ to between 90 ℃ and 95 ℃, and the temperature of air-conditioning water in an air-conditioning water inlet is adjusted from more than 5 ℃ to more than 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 second interface of the third steering gear, a first interface of a fourth steering gear is communicated with a second interface of the fourth steering gear, and a first interface of a fifth steering gear is communicated with a second interface of the fifth steering gear.
Further, in the refrigerating state, if the temperature of cooling water in the engine cooling water system is adjusted from more than 95 ℃ to between 90 ℃ and 95 ℃, the first interface of the first steering gear is communicated with the third interface of the first steering gear.
Further, the first steering gear, the second steering gear, the third steering gear, the fourth steering gear and the fifth steering gear are all three-way valves, and the sixth steering gear 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 position is changed by adjusting the communication relation among the interfaces of the first steering gear, the second steering gear, the third steering gear, the fourth steering gear and 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 heat recovery device of a gas heat pump 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 more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication 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 in a specific case.
Example 1:
as shown in fig. 1, the heat recovery device of the gas heat pump provided by the embodiment of the invention comprises a heat recovery system and an engine 8 cooling water system;
the heat recovery system comprises a steering assembly and a heat recovery device 12, wherein the steering assembly comprises a second steering device 13, a third steering device 14, a fourth steering device 15 and a fifth steering device 16, a first interface of the second steering device 13 is connected with an air-conditioning water outlet through a pipeline, a second interface of the second steering device 13 is connected with a second interface of the fourth steering device 15 through a pipeline, a first interface of the third steering device 14 is connected with an air-conditioning water inlet through a pipeline, a second interface of the third steering device 14 is connected with a second interface of the fifth steering device 16 through a pipeline, a third interface of the second steering device 13 is connected with a third interface of the third steering device 14 through a pipeline and then is connected with a first air-conditioning water channel port of the heat recovery device 12 through a pipeline, and a third interface of the fourth steering device 15 is connected with a third interface of the fifth steering device 16 through a pipeline and then is connected with a second air-conditioning water channel port of the heat recovery device 12 through a pipeline; the cooling water system of the engine 8 comprises the 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 recovery device 12 through a pipeline, a cooling water outlet of the heat recovery device 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 embodiment of the invention provides a heat recovery device of a gas heat pump, which further comprises a conversion system, the conversion system comprises a compressor 1, a gas-liquid separator 7, an oil separator 2, a sixth diverter 3, an air heat exchanger 6, a fan motor 17, an electronic expansion valve 5 and a water fluorine heat exchanger 4, wherein the engine 8 is in transmission connection with the compressor 1 through a belt, the outlet of the compressor 1 is connected with the inlet of the oil separator 2, the outlet of the oil separator 2 is connected with a first interface of the sixth diverter 3, an oil outlet of the oil separator 2 is connected with the outlet of the gas-liquid separator 7 and then is connected with the inlet of the compressor 1, a second interface of the sixth diverter 3 is connected with a first exchange port of the air heat exchanger 6, a second exchange port of the air heat exchanger 6 is connected with a first valve port of the electronic expansion valve 5, a second valve port of the electronic expansion valve 5 is connected with the first exchange port of the water fluorine heat exchanger 4, a second exchange port of the water fluorine heat exchanger 4 is connected with a fourth interface of the sixth diverter 3, a third interface of the oil outlet of the oil separator 2 is connected with a first interface of the sixth diverter 3, a second interface of the air heat exchanger 7 is connected with the air heat exchanger 6 through a third interface of the air heat exchanger 17, and a fourth interface of the air heat exchanger is connected with the fourth interface of the air heat exchanger 4.
Example 2:
the invention also provides a heat recovery control method of the gas heat pump, which comprises the following steps:
if the engine is in a heating or defrosting state, controlling the interface steering 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 according to the temperature of cooling water in the engine cooling water system;
if the engine is in a refrigerating state, 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 are controlled to steer according to the temperature of cooling water in the engine cooling water system and the temperature of air conditioning water in an air conditioning water inlet.
Specifically, in the heating state:
the first interface of the sixth steering gear 3 is communicated with the fourth interface of the sixth steering gear 3, the second interface of the sixth steering gear 3 is communicated with the third interface of the sixth steering gear 3, specifically, the compressor 1 compresses low-temperature low-pressure gaseous refrigerant into 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 high-temperature high-pressure gaseous refrigerant and lubricating oil carried by the high-temperature high-pressure gaseous refrigerant are 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 steering gear 3, the lubricating oil enters the inlet of the compressor 1 from the oil discharge port of the oil separator 2, the high-temperature high-pressure gaseous refrigerant exchanges heat with air-conditioning water in the heat recovery system in the water-fluorine heat exchanger 4 to condense into medium-temperature medium-pressure liquid refrigerant, the medium-temperature medium-pressure liquid refrigerant enters the second valve port of the electronic expansion valve 5 from the first exchange port of the water-fluorine heat exchanger 4, the medium-temperature medium-pressure liquid refrigerant is throttled into low-temperature low-pressure gas-liquid two-phase refrigerant through 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 low-temperature low-pressure gas-liquid two-phase refrigerant exchanges heat with air in the air heat exchanger 6 to evaporate into low-temperature low-pressure gas refrigerant, the low-temperature low-pressure gas refrigerant enters the inlet of the gas-liquid separator 7 after passing through the four-way valve from the first exchange port of the air heat exchanger 6, and as the air heat exchanger 6 can not completely convert the low-temperature low-pressure gas-liquid two-phase refrigerant into low-temperature low-pressure gas refrigerant, the low-temperature low-pressure gas refrigerant is mixed with a small amount of low-temperature low-pressure liquid refrigerant, the low-temperature low-pressure gaseous 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 gaseous 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 heating state, if the temperature of the cooling water in the cooling water system of the engine 8 is less than 60 ℃, 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 is not subjected to any heat exchange, so that the working efficiency of the engine 8 is prevented from being affected due to the excessively low temperature;
if the temperature of 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, and the cooling water in the cooling water system of the engine 8 and the air-conditioning water in the heat recovery system are subjected to heat exchange in the heat recovery 12, so that the water outlet 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 device 9 is communicated with the third interface of the first steering device 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 cooling water in the cooling water system of the engine 8 is prevented from continuously rising, and the engine 8 is prevented from being damaged.
Under the defrosting state:
the first interface of the sixth steering gear 3 is communicated with the second interface of the sixth steering gear 3, the third interface of the sixth steering gear 3 is communicated with the fourth interface of the sixth steering gear 3, specifically, the compressor 1 compresses low-temperature low-pressure gaseous refrigerant into 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, 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, lubricating oil enters the inlet of the compressor 1 from the oil discharge port of the oil separator 2, the high-temperature high-pressure gaseous refrigerant exchanges heat with air in the air heat exchanger 6 and condenses into medium-temperature medium-pressure liquid refrigerant, the medium-temperature medium-pressure liquid refrigerant enters the first valve port of the electronic expansion valve 5 from the second exchange port of the air heat exchanger 6, the medium-temperature medium-pressure liquid refrigerant throttles in the electronic expansion valve 5 to be low-temperature 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 low-pressure gas-liquid two-phase refrigerant exchanges heat with air-conditioning water in the heat recovery system in the water fluorine heat exchanger 4 to be evaporated into low-temperature low-pressure gas refrigerant, the low-temperature low-pressure gas refrigerant passes through the four-way valve from the second exchange port of the water fluorine heat exchanger 4 and enters the inlet of the gas-liquid separator 7, the low-temperature low-pressure gas-liquid two-phase refrigerant cannot be completely converted into low-temperature low-pressure gas refrigerant by the water fluorine heat exchanger 4, 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 gaseous 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 less than 60 ℃, 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 is not subjected to any heat exchange, so that the working efficiency of the engine 8 is prevented from being affected due to the excessively low temperature;
if the temperature of 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, and the cooling water in the cooling water system of the engine 8 and the air conditioning water in the heat recovery system are subjected to heat exchange in the heat recovery device 12, so that the water inlet temperature of the air conditioning water is further improved, the frost cracking of the water-fluorine heat exchanger 4 caused by the too low water inlet temperature during defrosting can be prevented, the defrosting speed can be 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 device 9 is communicated with the third interface of the first steering device 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 cooling water in the cooling water system of the engine 8 is prevented from continuously rising, and the engine 8 is prevented from being damaged.
Under the refrigerating state:
the first interface of the sixth steering gear 3 is communicated with the second interface of the sixth steering gear 3, the third interface of the sixth steering gear 3 is communicated with the fourth interface of the sixth steering gear 3, specifically, the compressor 1 compresses low-temperature low-pressure gaseous refrigerant into 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, 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, lubricating oil enters the inlet of the compressor 1 from the oil discharge port of the oil separator 2, the high-temperature high-pressure gaseous refrigerant exchanges heat with air in the air heat exchanger 6 and condenses into medium-temperature medium-pressure liquid refrigerant, the medium-temperature medium-pressure liquid refrigerant enters the first valve port of the electronic expansion valve 5 from the second exchange port of the air heat exchanger 6, the medium-temperature medium-pressure liquid refrigerant throttles in the electronic expansion valve 5 to be low-temperature 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 low-pressure gas-liquid two-phase refrigerant exchanges heat with air-conditioning water in the heat recovery system in the water fluorine heat exchanger 4 to be evaporated into low-temperature low-pressure gas refrigerant, the low-temperature low-pressure gas refrigerant passes through the four-way valve from the second exchange port of the water fluorine heat exchanger 4 and enters the inlet of the gas-liquid separator 7, the low-temperature low-pressure gas-liquid two-phase refrigerant cannot be completely converted into low-temperature low-pressure gas refrigerant by the water fluorine heat exchanger 4, 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 gaseous refrigerant enters the compressor 1, and a small amount of low-temperature low-pressure liquid refrigerant remains in the gas-liquid separator 7.
In the refrigeration state, 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 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 are subjected to heat exchange in the heat recovery 12, so that the water inlet temperature of the air-conditioning water is further improved, and freezing caused by excessively low water inlet temperature of the air-conditioning water is avoided;
if the temperature of 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 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;
If the temperature of 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 adjusted from less than or equal to 2 ℃ to more than 2 ℃ and less than or equal to 5 ℃, 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, and the cooling water in the cooling water system of the engine 8 and the air-conditioning water in the heat recovery system are subjected to heat exchange in the heat recovery device 12, so that the water inlet temperature of the air-conditioning water is further improved, and the freezing caused by the too low water 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 air-conditioning water inlet is adjusted from more than 5 ℃ to more than 2 ℃ and less than or equal to 5 ℃, 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.
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 device 9 is communicated with the third interface of the first steering device 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 cooling water in the cooling water system of the engine 8 is prevented from continuously rising, and the engine 8 is prevented from being damaged.
If the temperature of cooling water in the cooling water system of the engine 8 is adjusted from less than 90 ℃ to between 90 ℃ and 95 ℃ and the temperature of the air-conditioning water in the air-conditioning water inlet 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, and the cooling water in the cooling water system of the engine 8 and the air-conditioning water in the heat recovery system are subjected to heat exchange in the heat recovery 12, so that the water inlet temperature of the air-conditioning water is further improved, and freezing caused by excessively low water inlet temperature of the air-conditioning water is avoided;
If the temperature of cooling water in the cooling water system of the engine 8 is adjusted from less than 90 ℃ to between 90 ℃ and 95 ℃ and the temperature of the air-conditioning water in the air-conditioning water inlet is greater than 5 ℃, 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;
if the temperature of cooling water in the cooling water system of the engine 8 is adjusted from less than 90 ℃ to between 90 ℃ and 95 ℃, and the temperature of the air-conditioning water in the air-conditioning water inlet is adjusted from less than or equal to 2 ℃ to more than 2 ℃ and less than or equal to 5 ℃, the first interface of the first steering device 9 is communicated with the second interface of the first steering device 9, the first interface of the second steering device 13 is communicated with the second interface of the second steering device 13, the first interface of the third steering device 14 is communicated with the third interface of the third steering device 14, the first interface of the fourth steering device 15 is communicated with the second interface of the fourth steering device 15, the first interface of the fifth steering device 16 is communicated with the third interface of the fifth steering device 16, and the cooling water in the cooling water system of the engine 8 and the air-conditioning water in the heat recovery system are subjected to heat exchange in the heat recovery device 12, so that the water inlet temperature of the air-conditioning water is further improved, and freezing caused by too low water 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 adjusted from less than 90 ℃ to between 90 ℃ and 95 ℃, and the temperature of the air-conditioning water in the air-conditioning water inlet is adjusted from more than 5 ℃ to more than 2 ℃ and less than or equal to 5 ℃, 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.
If the temperature of the cooling water in the cooling water system of the engine 8 is adjusted from more than 95 ℃ to between 90 ℃ and 95 ℃, the first interface of the first steering device 9 is communicated with the third interface of the first steering device 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 cooling water in the cooling water system of the engine 8 is prevented from continuously rising, and the engine 8 is prevented from being damaged.
In the embodiment provided by the invention, the first interfaces of the first diverter 9, the second diverter 13, the third diverter 14, the fourth diverter 15 and the fifth diverter 16 correspond to the interfaces a in the figure, the second interfaces of the first diverter 9, the second diverter 13, the third diverter 14, the fourth diverter 15 and the fifth diverter 16 correspond to the interfaces B in the figure, the third interfaces of the first diverter 9, the second diverter 13, the third diverter 14, the fourth diverter 15 and the fifth diverter 16 correspond to the interfaces C in the figure, the first interfaces of the sixth diverter 3 correspond to the interfaces D in the figure, the second interfaces of the sixth diverter 3 correspond to the interfaces E in the figure, the third interfaces of the sixth diverter 3 correspond to the interfaces S in the figure, and the fourth interfaces of the sixth diverter 3 correspond to the interfaces F in the figure.
In the embodiment provided by the invention, 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 can be three-way valves, and the sixth steering gear 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 second steering gear 13, the third steering gear 14, the fourth steering gear 15 and 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 foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (10)
1. The gas heat pump heat recovery device is characterized by comprising a heat recovery system and an engine cooling water system, wherein the heat recovery system comprises a steering assembly and a heat recovery device, the steering assembly comprises a second steering device, a third steering device, a fourth steering device and a fifth steering device, a first interface of the second steering device is connected with an air conditioner water outlet, a second interface of the second steering device is connected with a second interface of the fourth steering device, a first interface of the third steering device is connected with an air conditioner water inlet, a second interface of the third steering device is connected with a second interface of the fifth steering device, a third interface of the second steering device is connected with a third interface of the third steering device and then is connected with a first air conditioner water channel port of the heat recovery device, and a third interface of the fourth steering device is connected with a third interface of the fifth steering device and then is connected with a second air conditioner water channel port of the heat recovery device;
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 air-fluorine heat exchanger comprises a compressor, a gas-liquid separator, an oil separator, a sixth steering gear, an air heat exchanger, a fan motor, an electronic expansion valve and a water-fluorine heat exchanger, wherein 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 outlet of the oil separator is connected with an outlet of the gas-liquid separator and then is 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 exchange port of the electronic expansion valve is connected with a first exchange port of the water-fluorine heat exchanger, a third interface of the water-fluorine heat exchanger is connected with an inlet of the sixth steering gear, the fan motor is connected with the air heat exchanger through a bracket, and 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 fourth steering gear is connected with a fourth interface of the water-fluorine heat exchanger.
2. The gas heat pump heat recovery device according to claim 1, wherein in a heating state, the first port of the sixth diverter is in communication with the fourth port of the sixth diverter, and the second port of the sixth diverter is in communication with the third port of the sixth diverter;
in the refrigerating 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.
3. The gas heat pump heat recovery device of claim 2, wherein the first diverter, the second diverter, the third diverter, the fourth diverter, and the fifth diverter are three-way valves, and the sixth diverter is a four-way valve.
4. A gas heat pump heat recovery control method employing a gas heat pump heat recovery apparatus according to claim 1, characterized by comprising:
if the engine 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 the engine cooling water system;
and if the engine 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 the engine cooling water system and the temperature of air conditioning water in the air conditioning water inlet.
5. The method according to claim 4, wherein in a heating state, if the temperature of cooling water in the engine cooling water system is less than 60 ℃, the first interface of the first diverter is communicated with the second interface of the first diverter, the first interface of the second diverter is communicated with the second interface of the second diverter, the first interface of the third diverter is communicated with the second interface of the third diverter, the first interface of the fourth diverter is communicated with the second interface of the fourth diverter, and the first interface of the fifth diverter is communicated with the second interface of the fifth diverter;
if the temperature of cooling water in the engine cooling water system is between 60 ℃ and 90 ℃, 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 third 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 third 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;
if the temperature of cooling water in the engine cooling water system is higher than 90 ℃, the first interface of the first diverter is communicated with the third interface of the first diverter.
6. The method according to claim 4, wherein in a defrost state, if a cooling water temperature in an engine cooling water system is less than 60 ℃, a first interface of a first diverter is communicated with a second interface of the first diverter, a first interface of a second diverter is communicated with a second interface of the second diverter, a first interface of a third diverter is communicated with a second interface of the third diverter, a first interface of a fourth diverter is communicated with a second interface of the fourth diverter, and a first interface of a fifth diverter is communicated with a second interface of the fifth diverter;
if the temperature of cooling water in the engine cooling water system is between 60 ℃ and 90 ℃, 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 third 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 third interface of the fifth steering gear;
if the temperature of cooling water in the engine cooling water system is higher than 90 ℃, the first interface of the first diverter is communicated with the third interface of the first diverter.
7. The method according to claim 4, wherein in a cooling state, if a cooling water temperature in an engine cooling water system is less than 90 ℃ and an air conditioning water temperature in an air conditioning water inlet is less than or equal to 2 ℃, a first interface of a first diverter is communicated with a second interface of the first diverter, a first interface of a second diverter is communicated with a second interface of the second diverter, a first interface of a third diverter is communicated with a third interface of the third diverter, a first interface of a fourth diverter is communicated with a second interface of the fourth diverter, and a first interface of a fifth diverter is communicated with a third interface of the fifth diverter;
if the temperature of cooling water in the engine cooling water system is 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 the engine cooling water system is less than 90 ℃ and the temperature of air-conditioning water in an air-conditioning water inlet is adjusted from less than or equal to 2 ℃ to more than 2 ℃ and less than or equal to 5 ℃, a first interface of a first steering gear is communicated with a second interface of a 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 third interface of the 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-conditioning water in an air-conditioning water inlet is adjusted from more than 5 ℃ to more than 2 ℃ and less than or equal to 5 ℃, a first interface of a first steering gear is communicated with a second interface of a 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.
8. The method according to claim 7, wherein the first port of the first diverter is connected to the third port of the first diverter in a cooling state if the temperature of cooling water in the engine cooling water system is higher than 95 ℃.
9. The gas heat pump heat recovery control method according to claim 8, wherein in a refrigerating state, if the temperature of cooling water in the engine cooling water system is adjusted from less than 90 ℃ to between 90 ℃ and 95 ℃ and the temperature of air-conditioning water in the air-conditioning water inlet is less than or equal to 2 ℃, the first interface of the first diverter is communicated with the second interface of the first diverter, the first interface of the second diverter is communicated with the second interface of the second diverter, the first interface of the third diverter is communicated with the third interface of the third diverter, the first interface of the fourth diverter is communicated with the second interface of the fourth diverter, and the first interface of the fifth diverter is communicated with the third interface of the fifth diverter;
if the temperature of cooling water in the engine cooling water system is adjusted from less than 90 ℃ to between 90 ℃ and 95 ℃ 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 the third steering gear, a first interface of a fourth steering gear is communicated with a second interface of the fourth steering gear, and a first interface of a fifth steering gear is communicated with a second interface of the fifth steering gear;
If the temperature of cooling water in the engine cooling water system is adjusted from less than 90 ℃ to between 90 and 95 ℃, and the temperature of air-conditioning water in an air-conditioning water inlet is adjusted from less than or equal to 2 ℃ to more than 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 the third steering gear, a first interface of a fourth steering gear is communicated with a second interface of the fourth steering gear, and a first interface of a fifth steering gear is communicated with a third interface of the fifth steering gear;
if the temperature of cooling water in the engine cooling water system is adjusted from less than 90 ℃ to between 90 ℃ and 95 ℃, and the temperature of air-conditioning water in an air-conditioning water inlet is adjusted from more than 5 ℃ to more than 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 second interface of the third steering gear, a first interface of a fourth steering gear is communicated with a second interface of the fourth steering gear, and a first interface of a fifth steering gear is communicated with a second interface of the fifth steering gear.
10. The gas heat pump heat recovery control method according to claim 9, wherein in a cooling state, if the cooling water temperature in the engine cooling water system is adjusted from more than 95 ℃ to between 90 ℃ and 95 ℃, the first port of the first diverter is communicated with the third port of the first diverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210967575.5A CN115307338B (en) | 2022-08-12 | 2022-08-12 | Heat recovery device of gas heat pump and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210967575.5A CN115307338B (en) | 2022-08-12 | 2022-08-12 | Heat recovery device of gas heat pump and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115307338A CN115307338A (en) | 2022-11-08 |
| CN115307338B true CN115307338B (en) | 2023-12-01 |
Family
ID=83861853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210967575.5A Active CN115307338B (en) | 2022-08-12 | 2022-08-12 | Heat recovery device of gas heat pump and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115307338B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009210159A (en) * | 2008-02-29 | 2009-09-17 | Mitsubishi Heavy Ind Ltd | Control method of gas heat pump type air conditioner, and gas heat pump type air conditioner |
| CN109990499A (en) * | 2019-03-04 | 2019-07-09 | 南京天加环境科技有限公司 | A kind of non-stop-machine combustion-gas thermal pump air-conditioning system of defrosting |
| CN110779273A (en) * | 2019-11-21 | 2020-02-11 | 郑州轻工业大学 | Novel storage cabinet with energy storage function |
| CN110822601A (en) * | 2019-11-25 | 2020-02-21 | 成都安美科燃气技术股份有限公司 | Multi-connected gas supply heat pump air conditioning system and control method thereof |
| CN112815569A (en) * | 2021-01-14 | 2021-05-18 | 中科广能能源研究院(重庆)有限公司 | Gas heat pump cold and hot water unit air conditioning system and control method thereof |
| CN114440489A (en) * | 2020-12-28 | 2022-05-06 | 中科广能能源研究院(重庆)有限公司 | Gas heat pump multi-connected unit air conditioning system and control method thereof |
| CN114543390A (en) * | 2022-03-09 | 2022-05-27 | 南京天加环境科技有限公司 | Cooling water loop structure of gas heat pump and control method thereof |
| CN114543387A (en) * | 2022-02-25 | 2022-05-27 | 南京天加环境科技有限公司 | Gas heat pump system capable of improving defrosting efficiency and control method thereof |
| CN114777238A (en) * | 2022-05-06 | 2022-07-22 | 南京天加环境科技有限公司 | Cold and hot water unit of low-temperature gas heat pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7503184B2 (en) * | 2006-08-11 | 2009-03-17 | Southwest Gas Corporation | Gas engine driven heat pump system with integrated heat recovery and energy saving subsystems |
-
2022
- 2022-08-12 CN CN202210967575.5A patent/CN115307338B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009210159A (en) * | 2008-02-29 | 2009-09-17 | Mitsubishi Heavy Ind Ltd | Control method of gas heat pump type air conditioner, and gas heat pump type air conditioner |
| CN109990499A (en) * | 2019-03-04 | 2019-07-09 | 南京天加环境科技有限公司 | A kind of non-stop-machine combustion-gas thermal pump air-conditioning system of defrosting |
| CN110779273A (en) * | 2019-11-21 | 2020-02-11 | 郑州轻工业大学 | Novel storage cabinet with energy storage function |
| CN110822601A (en) * | 2019-11-25 | 2020-02-21 | 成都安美科燃气技术股份有限公司 | Multi-connected gas supply heat pump air conditioning system and control method thereof |
| CN114440489A (en) * | 2020-12-28 | 2022-05-06 | 中科广能能源研究院(重庆)有限公司 | Gas heat pump multi-connected unit air conditioning system and control method thereof |
| CN112815569A (en) * | 2021-01-14 | 2021-05-18 | 中科广能能源研究院(重庆)有限公司 | Gas heat pump cold and hot water unit air conditioning system and control method thereof |
| CN114543387A (en) * | 2022-02-25 | 2022-05-27 | 南京天加环境科技有限公司 | Gas heat pump system capable of improving defrosting efficiency and control method thereof |
| CN114543390A (en) * | 2022-03-09 | 2022-05-27 | 南京天加环境科技有限公司 | Cooling water loop structure of gas heat pump and control method thereof |
| CN114777238A (en) * | 2022-05-06 | 2022-07-22 | 南京天加环境科技有限公司 | Cold and hot water unit of low-temperature gas heat pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115307338A (en) | 2022-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102042648A (en) | Heat recovery type multi-connection air condition unit | |
| CN108844250B (en) | Low-ambient-temperature air source heat pump system | |
| WO2008026791A1 (en) | Air conditioning system for communication equipment | |
| CN200940973Y (en) | Low temp air source heat pump | |
| KR20160086615A (en) | Air conditioner | |
| CN114777238B (en) | Cold and hot water unit of low-temperature gas heat pump | |
| CN113251473B (en) | Air conditioner | |
| US11965683B2 (en) | Cooling system for low temperature storage | |
| CN115307338B (en) | Heat recovery device of gas heat pump and control method | |
| CN110654199A (en) | New energy automobile heat pump air conditioning system with ejector | |
| CN112460755B (en) | Frequency converter thermal management system of air conditioning unit, air conditioning unit and control method | |
| CN205033907U (en) | Refrigerator car air conditioning system and refrigerator car | |
| KR20190128360A (en) | Cooling system for a low temperature storage | |
| CN101625174B (en) | Multi-functional modularization heat pump machine set | |
| CN103743148B (en) | There is the capillary-compensated heat pump type air conditioner of regenerator | |
| KR20190126553A (en) | Cooling system for a low temperature storage | |
| CN220229612U (en) | Air source heat pump system | |
| CN219550880U (en) | Double-stage jet enthalpy-increasing heat pump system and air conditioner thereof | |
| CN220250164U (en) | Fresh air conditioner | |
| CN116202241A (en) | Single-system and double-system variable gas heat pump unit and control method thereof | |
| CN220366497U (en) | Industrial and commercial four-pipe system capable of meeting multiple cold and hot requirements simultaneously | |
| CN113218102B (en) | Heat pump system based on three devices and defrosting method thereof | |
| CN216868891U (en) | Integrated hot gas defrosting condensing unit for application of calandria cold storage | |
| CN216204444U (en) | Air conditioner combining air supply compressor and indoor and outdoor auxiliary heat exchanger | |
| CN211781380U (en) | Integrated system for recovering air waste heat for heating and refrigerating domestic hot water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |