CN118347179A - Multifunctional heat pump unit - Google Patents
Multifunctional heat pump unit Download PDFInfo
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- CN118347179A CN118347179A CN202410410869.7A CN202410410869A CN118347179A CN 118347179 A CN118347179 A CN 118347179A CN 202410410869 A CN202410410869 A CN 202410410869A CN 118347179 A CN118347179 A CN 118347179A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 156
- 239000003507 refrigerant Substances 0.000 claims abstract description 42
- 238000005457 optimization Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 44
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000001704 evaporation Methods 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 6
- 238000004378 air conditioning Methods 0.000 claims 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005192 partition Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000013486 operation strategy Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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Abstract
The invention provides a multifunctional heat pump unit which comprises an air-cooled heat exchanger, two water-cooled heat exchangers, a compressor, an expansion valve, two four-way reversing valves, a chilled water pump, a hot water tank and valves on refrigerant pipelines. The invention combines the waterway optimization, can realize the high-temperature heat supply function, and can meet the requirements of heat supply at various hot water temperatures, heat supply at the same time and domestic hot water supply at the same time. The heat pump unit is matched with flash steam for use at the same time, and can also be used for supplying steam. The energy consumption requirements of most buildings and most climate partitions are met, and standardized production and standardized application of cold and heat source equipment are facilitated, so that the technology has wide application prospect and becomes an important technical means for realizing the double-carbon target.
Description
Technical Field
The invention relates to the field of energy supply, in particular to a multifunctional heat pump unit.
Background
The heat pump is a device for transferring heat energy of a low-level heat source to a high-level heat source, and is an important technical means for realizing a double-carbon target. The heat pump is mainly divided into an air-cooled heat pump, a water-cooled heat pump and a steam-cooled heat pump according to heat source types. The heat pump unit can realize the functions mainly including: the heat and cold supply, the domestic hot water supply and the cold and heat supply are simultaneously carried out. However, the existing heat pump units cannot realize the five functions at the same time, such as a heat recovery type heat pump unit, and can realize the functions of supplying cold in summer, supplying heat in winter and supplying domestic hot water at the same time when cold in summer, but the heat pump cannot supply the domestic hot water alone, and the domestic hot water system needs to be additionally provided with a heat source alone at full load, so that for projects with various demands, various types of heat pumps need to be configured, and the system is complex. In addition, the temperature of the domestic hot water recovered by the heat recovery type heat pump unit is not too high, the temperature of the domestic hot water of the total heat recovery type heat pump is usually about 50 ℃, and the temperature of the domestic hot water of part of the heat recovery type heat pump is about 45 ℃ or even lower, so that the use requirement of the domestic hot water is not met. The cascade heat pump unit also appears in the market at present, can provide hot water or even steam with higher temperature, and expands the application scene of the heat pump. The cascade heat pump is provided with two or more independent heat pump circulation systems, wherein the first-stage circulation absorbs heat from a low-temperature heat source and stores the heat in a medium-temperature heat source, and the next-stage circulation system absorbs heat from the medium-temperature heat source and transfers the heat to a high-temperature heat source, so that the temperature of the heat source is increased. However, the cascade heat pump has the defect that the cascade heat pump is not compatible with the traditional heat pump, the cascade heat pump cannot provide hot water with intermediate temperature, for example, a floor heating system only needs hot water with the temperature not exceeding 50 ℃, and a common heat pump is needed to supply heat, so that for projects with various heat supply temperature requirements, various heat pumps are needed to be configured, the system is complex, and the compatibility of the heat pump system is poor.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the multifunctional heat pump unit which can realize multiple heat and cold supply functions at the same time and can replace the function of a cascade heat pump, so that the application technical means of a heat pump system can be greatly simplified, the standardized production of the heat pump can be realized, and the application of the heat pump technology is promoted.
The invention provides a multifunctional heat pump unit which comprises an air-cooled heat exchanger 1, a first water-cooled heat exchanger 2, a second water-cooled heat exchanger 3, a compressor 4, an expansion valve 5, a first four-way reversing valve 6, a second four-way reversing valve 10, a chilled water pump 7, a hot water pump 8, a hot water tank 9 and valves 11-16 on refrigerant pipelines; the above devices are connected through a refrigerant pipe, a domestic hot water circulating pipe and a cold and hot water pipe: two opposite interfaces of the first four-way reversing valve 6 are respectively connected with an inlet and an outlet of the compressor 4, the other two opposite interfaces are respectively connected with the air-cooled heat exchanger 1 and the first water-cooled heat exchanger 2, a valve 15 is arranged on a refrigerant pipe between the air-cooled heat exchanger 1 and the first four-way reversing valve 6, and a valve 11 is arranged on a refrigerant pipe between the first four-way reversing valve 6 and the first water-cooled heat exchanger 2; two opposite interfaces of the second four-way reversing valve 10 are respectively connected with an inlet and an outlet of the expansion valve 5, the other two opposite interfaces are respectively connected with the air-cooled heat exchanger 1 and the first water-cooled heat exchanger 2, a valve 16 is arranged on a refrigerant pipe between the four-way reversing valve 10 and the air-cooled heat exchanger 1, and a valve 12 is arranged on a refrigerant pipe between the second four-way reversing valve 10 and the first water-cooled heat exchanger 2; a branch refrigerant pipe is arranged on an outlet refrigerant pipe of the compressor 4 and is connected with the second water-cooling heat exchanger 3, and a valve 13 is arranged on the branch refrigerant pipe; a branch refrigerant pipe is branched from an inlet refrigerant pipe of the expansion valve 5 and is connected with the second water-cooling heat exchanger 3, and a valve 14 is arranged on the branch refrigerant pipe; the inlet and outlet of the first water-cooling heat exchanger 2 is connected with a chilled water return pipe and a chilled water supply pipe, the chilled water supply pipe or the chilled water return pipe is provided with a chilled water pump 7, the second water-cooling heat exchanger 3 is connected with a domestic hot water supply pipe and a domestic hot water return pipe between the hot water tank 9, and the domestic hot water supply pipe or the domestic hot water return pipe is provided with a hot water pump 8.
The multifunctional heat pump unit provided by the invention can simultaneously realize five functions of supplying cold, supplying heat, supplying domestic hot water, supplying cold and simultaneously supplying domestic hot water and simultaneously supplying cold and supplying heat through pipeline optimization and valve switching. The invention combines waterway optimization, and can also realize high-temperature heat supply function, multiple hot water temperature heat supply function, simultaneous heat supply and domestic hot water supply function, and multiple hot water temperature heat supply and domestic hot water supply function. The heat pump unit is matched with the flash evaporator for use simultaneously, and can also realize the function of supplying steam.
The multifunctional heat pump unit provided by the invention is a standardized product, and simultaneously meets the heat consumption requirements of most buildings and most climate partitions by combining with standardized application technical measures, and has remarkable energy-saving and carbon-reducing effects, so that the technology has wide application prospect and becomes an important technical means for realizing the double-carbon target.
Drawings
Fig. 1 is a schematic system structure of a multifunctional heat pump unit according to an embodiment of the present invention;
fig. 2 is a schematic system structure of a multifunctional heat pump unit according to another embodiment of the present invention;
fig. 3 is a schematic system structure of a multifunctional heat pump unit according to a third embodiment of the present invention;
FIG. 4 is a schematic diagram of a single cooling operation of the multifunctional heat pump unit;
FIG. 5 is a schematic diagram of a single heating operation of the multifunctional heat pump unit;
FIG. 6 is a schematic diagram of a working condition flow of the multifunctional heat pump unit for independently supplying domestic hot water;
FIG. 7 is a schematic diagram of a working condition flow of the multifunctional heat pump unit for supplying cold and domestic hot water at the same time;
FIG. 8 is a schematic diagram of a flow chart of a multi-functional heat pump unit under the working conditions of simultaneous cooling and heating;
fig. 9 is a schematic diagram of a system structure of a multifunctional heat pump unit in which an air-cooled heat exchanger is a photovoltaic and photo-thermal integrated heat exchanger;
Fig. 10 is a schematic diagram of a system structure of another multifunctional heat pump unit in which the air-cooled heat exchanger is a photovoltaic and photo-thermal integrated heat exchanger.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. In addition, the technical features of each embodiment or the single embodiment provided by the invention can be combined with each other at will to form a feasible technical scheme, and the combination is not limited by the sequence of steps and/or the structural composition mode, but is necessarily based on the fact that a person of ordinary skill in the art can realize the combination, and when the technical scheme is contradictory or can not realize, the combination of the technical scheme is not considered to exist and is not within the protection scope of the invention claimed.
Referring to fig. 1 to 3, the present invention provides a multifunctional heat pump unit in three structural forms, wherein fig. 1 shows a multifunctional heat pump unit in a first structural form, and the multifunctional heat pump unit comprises an air-cooled heat exchanger 1, a first water-cooled heat exchanger 2, a second water-cooled heat exchanger 3, a compressor 4, an expansion valve 5, a first four-way reversing valve 6, a second four-way reversing valve 10, a chilled water pump 7, a hot water pump 8, a hot water tank 9 and valves 11 to 16 on a refrigerant pipeline. The above devices are connected through a refrigerant pipe, a domestic hot water circulating pipe and a cold and hot water pipe: two opposite interfaces of the first four-way reversing valve 6 are respectively connected with an inlet and an outlet of the compressor 4, the other two opposite interfaces are respectively connected with the air-cooled heat exchanger 1 and the first water-cooled heat exchanger 2, valves 15 are respectively arranged on refrigerant pipes between the air-cooled heat exchanger 1 and the first four-way reversing valve 6, and valves 11 are arranged on refrigerant pipes between the first four-way reversing valve 6 and the first water-cooled heat exchanger 2; two opposite interfaces of the second four-way reversing valve 10 are respectively connected with an inlet and an outlet of the expansion valve 5, the other two opposite interfaces are respectively connected with the air-cooled heat exchanger 1 and the first water-cooled heat exchanger 2, a valve 16 is arranged on a refrigerant pipe between the second four-way reversing valve 10 and the air-cooled heat exchanger 1, and a valve 12 is arranged on a refrigerant pipe between the second four-way reversing valve 10 and the first water-cooled heat exchanger 2; a branch refrigerant pipe is arranged on an outlet refrigerant pipe of the compressor 4 and is connected with the second water-cooling heat exchanger 3, and a valve 13 is arranged on the branch refrigerant pipe; the branch refrigerant pipe is connected with the second water-cooling heat exchanger 3, and a valve 14 is arranged on the branch refrigerant pipe. The inlet and outlet of the first water-cooling heat exchanger 2 is connected with a chilled water return pipe and a chilled water supply pipe, and a chilled water pump 7 is arranged on the chilled water supply pipe or the chilled water return pipe. A domestic hot water supply pipe and a domestic hot water return pipe are connected between the second water-cooling heat exchanger 3 and the hot water tank 9, and a hot water pump 8 is arranged on the domestic hot water supply pipe or the domestic hot water return pipe.
The air-cooled heat exchanger 1 can be an air-cooled heat exchanger, or can be a water-cooled heat exchanger, an evaporation-cooled heat exchanger or a photovoltaic photo-thermal integrated heat exchanger, wherein the air-cooled heat exchanger is applied to an air-cooled heat pump system, the water-cooled heat exchanger is applied to a water-cooled heat pump system such as a ground source heat pump, the evaporation-cooled heat exchanger is applied to an evaporation-cooled heat pump system, and the photovoltaic photo-thermal integrated heat exchanger is applied to a domestic hot water or a heating system. The first water-cooled heat exchanger 2 may be either a water-cooled heat exchanger or an air-cooled heat exchanger. The second water-cooled heat exchanger 3 may be either a water-cooled heat exchanger or an evaporative cooling heat exchanger.
Fig. 2 shows a second structural form of the multifunctional heat pump unit, in which the second four-way reversing valve 10 is adjusted to a valve 17 based on the first structural form, and the structure includes: branch refrigerant pipes are respectively arranged at two ends of the expansion valve 5 and connected with the first water-cooling heat exchanger 2, and a valve 17 and a valve 12 are respectively arranged on the branch refrigerant pipes.
Fig. 3 shows a third structural form of the multifunctional heat pump unit, on the basis of the first structural form, the third structural form of the multifunctional heat pump unit is formed by 12 valves 18 instead of the first four-way reversing valve 6, the second four-way reversing valve 10 and valves 11-16, wherein two ends of the compressor 4 and the expansion valve 5 are respectively connected with 1 main pipe, total 4 main pipes, 3 branch pipes are respectively separated from each main pipe, each branch pipe is respectively provided with the valve 18, total 12 branch pipes and the valve 18, 1 inlet branch pipe of the compressor 4 and 1 inlet branch pipe of the expansion valve 5 are combined into a group, 3 groups of inlet branch pipes are numbered A, B, C, each group of inlet branch pipes is connected with one heat exchanger (the air-cooled heat exchanger 1, the first water-cooled heat exchanger 2 and the second water-cooled heat exchanger 3), 1 outlet branch pipe of the compressor 4 and 1 outlet branch pipe of the expansion valve 5 are combined into a group, 3 groups of outlet branch pipes are numbered a', each group of outlet branch pipes is connected with one heat exchanger, and the three groups of heat exchangers can be flexibly switched into a condenser or a condenser according to requirements.
The multifunctional heat pump unit provided by the invention can simultaneously realize five functions of supplying cold, supplying heat, supplying domestic hot water, supplying cold and simultaneously supplying domestic hot water and simultaneously supplying cold and heat by switching the first four-way reversing valve 6 and the second four-way reversing valve 10 and switching the valves 10-16 on the refrigerant pipeline.
The operation conditions for realizing various functions are as follows:
1. Separately cooling: referring to fig. 4 (the operational piping is indicated by a thick line, the non-operational piping is indicated by a broken line, and the same applies), the first four-way reversing valve 6 and the second four-way reversing valve 10 are switched so that the first water-cooled heat exchanger 2 is used as an evaporator, and the air-cooled heat exchanger 1 is used as a condenser; the valves 11, 12, 15 and 16 are opened, the valves 13 and 14 are closed, the first water-cooled heat exchanger 2, the chilled water pump 7 and the water supply and return pipes thereof are operated, the second water-cooled heat exchanger 3, the hot water tank 9, the hot water pump 8 and the water supply and return pipes thereof are not operated, the air-cooled heat exchanger 1 is operated, and at the moment, the heat pump unit is used for cooling, and heat is discharged outdoors through the air-cooled heat exchanger 1.
2. And (3) independently supplying heat: referring to fig. 5, the first four-way selector valve 6 and the second four-way selector valve 10 are switched so that the first water-cooled heat exchanger 2 serves as a condenser and the air-cooled heat exchanger 1 serves as an evaporator. The valves 11, 12, 15, 16 are open and the valves 13, 14 are closed. The first water-cooled heat exchanger 2, the chilled water pump 7 and the water supply and return pipes thereof are operated, the second water-cooled heat exchanger 3, the hot water tank 9, the hot water pump 8 and the water supply and return pipes thereof are not operated, and the air-cooled heat exchanger 1 is operated. At this time, the heat pump unit is supplying heat, and the heat is absorbed from the outside through the air-cooled heat exchanger 1. The difference between the separate heating and separate cooling conditions is only the change of the four-way reversing valve.
3. And (3) independently supplying domestic hot water: referring to fig. 6, the states of the first four-way reversing valve 6 and the second four-way reversing valve 10 are the same as the independent heat supply working conditions, and only a single channel circulates the refrigerant, so that the second water-cooled heat exchanger 3 is used as a condenser, and the air-cooled heat exchanger 1 is used as an evaporator. The valves 13, 14, 15, 16 are open and the valves 11, 12 are closed. The first water-cooled heat exchanger 2, the chilled water pump 7 and the water supply and return pipes thereof do not operate, the second water-cooled heat exchanger 3, the hot water tank 9, the hot water pump 8 and the water supply and return pipes thereof operate, and the air-cooled heat exchanger 1 operates. At this time, the heat pump unit is supplying domestic hot water, and heat is absorbed from the outside through the air-cooled heat exchanger 1.
4. Domestic hot water is supplied while cooling: referring to fig. 7, the states of the first four-way reversing valve 6 and the second four-way reversing valve 10 are the same as the independent cold supply working conditions, but the refrigerant is circulated in a single channel, so that the second water-cooled heat exchanger 3 is used as a condenser, and the first water-cooled heat exchanger 2 is used as an evaporator. The valves 11, 12, 13, 14 are open and the valves 15, 16 are closed. The first water-cooled heat exchanger 2, the chilled water pump 7 and the water supply and return pipes thereof run, the second water-cooled heat exchanger 3, the hot water tank 9, the hot water pump 8 and the water supply and return pipes thereof run, and the air-cooled heat exchanger 1 does not run. At the moment, the heat pump unit supplies domestic hot water while supplying cold, and heat is transferred from chilled water to the domestic hot water. At this time, the heat pump unit controls the outlet water temperature of domestic hot water, ensures that the water temperature of the domestic hot water meets the use requirement, and the temperature of chilled water is not precisely controlled, which is different from the control strategy of the heat recovery cold water/heat pump unit (controlling the outlet water temperature of chilled water and not controlling the temperature of hot water).
5. Simultaneously cooling and heating: referring to fig. 8, when the cold demand is equal to the heat demand, the operation strategy of simultaneously supplying cold and heat is completely the same as the operation strategy of simultaneously supplying domestic hot water, but the hot water tank 9 can be omitted, and the domestic hot water pump 8 and the water supply and return pipe thereof are used as an air conditioner hot water pump and a hot water pipe thereof. When the cold demand is more and the heat demand is less, a plurality of heat pumps are required to be operated in parallel, wherein one part of the heat pumps are operated under the working condition of supplying cold and domestic hot water, and the other part of the heat pumps are operated under the working condition of supplying cold alone. When the heat demand is more and the cold demand is less, a plurality of heat pumps are required to be operated in parallel, wherein one part of the heat pumps are operated under the working condition of supplying domestic hot water while supplying cold, and the other part of the heat pumps are operated under the working condition of supplying the domestic hot water independently. The working conditions of simultaneously cooling and heating are combined operation working conditions of simultaneously cooling and simultaneously supplying domestic hot water and independently cooling working conditions or independently supplying domestic hot water.
The control strategies for realizing different functions are summarized as follows:
Referring to fig. 9 and 10, the air-cooled heat exchanger 1 of the present invention is replaced by a photovoltaic photo-thermal integrated heat exchanger, and a group of evaporative cooling heat exchangers 26 are added. The structure of the evaporative cooling heat exchanger 26 includes: a group of plate heat exchangers 24 and free cold and heat supply water pumps 25 are added outside the evaporation cold heat exchanger 26, valves 21 are additionally arranged on spray pipes in front of spray heads of the evaporation cold heat exchanger 26, three-way pipes are arranged in front of and behind the valves 21, branch pipes are respectively led out to be connected with inlets and outlets of the primary sides of the plate heat exchangers 24, a valve 22 is arranged on a water inlet pipe, a valve 23 is arranged on a water return pipe, and the cold and heat supply water pumps 25 can be arranged on a water return pipe of the secondary side of the plate heat exchanger 24 or on a water supply pipe of the secondary side of the plate heat exchanger 24.
The photovoltaic and photo-thermal integrated heat exchanger is switched with the evaporative cooling heat exchanger 26, and when the photovoltaic and photo-thermal integrated heat exchanger is used as an evaporator, the photovoltaic and photo-thermal integrated heat exchanger is started, and the evaporative cooling heat exchanger 26 is closed; when the photovoltaic photo-thermal integrated heat exchanger is used as a condenser, the evaporative cooling heat exchanger 26 is started, and the photovoltaic photo-thermal integrated heat exchanger is closed. Switching modes: when the first or second structural form is adopted, the valve 19 and the valve 20 are arranged on the inlet pipe and the outlet pipe of the evaporative cooling heat exchanger 26 for switching control, and when the third structural form is adopted, a branch pipe group D, D ',4 valves 18 are additionally arranged, and the evaporative cooling heat exchanger 26 is connected with the branch pipe group D, D'.
The multifunctional heat pump unit provided by the embodiment of the invention can simultaneously realize five functions of supplying cold, supplying heat, supplying domestic hot water while supplying cold and heat by optimizing the pipeline and switching the valves. The invention combines waterway optimization, and can also realize high-temperature heat supply function, multiple hot water temperature heat supply function, simultaneous heat supply and domestic hot water supply function, and multiple hot water temperature heat supply and domestic hot water supply function. The heat pump unit is matched with the flash evaporator for use simultaneously, and can also realize the function of supplying steam. The heat pump unit adopts the photovoltaic photo-thermal integrated heat exchanger to be used in a switching manner with the evaporative cooling heat exchanger, when the air conditioner is used for cooling in summer, the evaporative cooling heat exchanger is utilized for heat dissipation, and when the air conditioner is used for heating in winter, the photovoltaic photo-thermal integrated heat exchanger is utilized for absorbing heat, so that compared with a traditional air-cooled heat pump system, the cooling and heating efficiency is remarkably improved, and the energy-saving and carbon-reduction effects are remarkable.
The invention is a standardized product, and simultaneously combines a standardized application technical measure, meets the energy consumption requirements of most buildings and most climate areas, and has remarkable energy-saving and carbon-reducing effects, so that the technology has wide application prospect and becomes an important technical means for realizing the double-carbon target.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. The multifunctional heat pump unit is characterized by comprising a first structural form, wherein the first structural form comprises an air-cooled heat exchanger (1), a first water-cooled heat exchanger (2), a second water-cooled heat exchanger (3), a compressor (4), an expansion valve (5), a first four-way reversing valve (6), a second four-way reversing valve (10), a chilled water pump (7), a hot water pump (8), a hot water tank (9) and valves (11) to 16) on a refrigerant pipeline, and all devices are connected through a refrigerant pipe, a domestic hot water circulating pipe and the cold and hot water pipe: two opposite interfaces of the first four-way reversing valve (6) are respectively connected with an inlet and an outlet of the compressor (4), the other two opposite interfaces are respectively connected with the air-cooled heat exchanger (1) and the first water-cooled heat exchanger (2), a valve (15) is arranged on a refrigerant pipe between the air-cooled heat exchanger (1) and the first four-way reversing valve (6), and a valve (11) is arranged on the refrigerant pipe between the first four-way reversing valve (6) and the first water-cooled heat exchanger (2); two opposite interfaces of the second four-way reversing valve (10) are respectively connected with an inlet and an outlet of the expansion valve (5), the other two opposite interfaces are respectively connected with the air-cooled heat exchanger (1) and the first water-cooled heat exchanger (2), a valve (16) is arranged on a refrigerant pipe between the second four-way reversing valve (10) and the air-cooled heat exchanger (1), and a valve (12) is arranged on the refrigerant pipe between the second four-way reversing valve (10) and the first water-cooled heat exchanger (2); a branch refrigerant pipe is separated from an outlet refrigerant pipe of the compressor (4) and is connected with the second water-cooling heat exchanger (3), and a valve (13) is arranged on the branch refrigerant pipe; the inlet refrigerant pipe of the expansion valve (5) is branched and connected with the second water-cooling heat exchanger (3), a valve (14) is arranged on the branched refrigerant pipe, the inlet and outlet of the first water-cooling heat exchanger (2) is connected with a chilled water return pipe and a chilled water supply pipe, a chilled water pump (7) is arranged on the chilled water supply pipe or the chilled water return pipe, a domestic hot water supply pipe and a domestic hot water return pipe are connected between the second water-cooling heat exchanger (3) and the hot water tank (9), and a hot water pump (8) is arranged on the domestic hot water supply pipe or the domestic hot water return pipe.
2. The multifunctional heat pump unit according to claim 1, wherein the air-cooled heat exchanger (1) can be replaced by a water-cooled heat exchanger, an evaporative cooling heat exchanger or a photovoltaic photo-thermal integrated heat exchanger, the air-cooled heat exchanger is applied to an air-cooled heat pump system, the water-cooled heat exchanger is applied to a water-cooled heat pump system such as a ground source heat pump, the evaporative cooling heat exchanger is applied to an evaporative cooling heat pump system, and the photovoltaic photo-thermal integrated heat exchanger is applied to domestic hot water or a heating system; the first water-cooled heat exchanger (2) can be replaced by an air-cooled heat exchanger; the second water-cooled heat exchanger (3) can be replaced by an evaporative cold heat exchanger.
3. The multifunctional heat pump unit according to claim 2, further comprising a second structural form, wherein the second structural form is based on the first structural form, the second four-way reversing valve (10) is adjusted to be a valve (17), two ends of the expansion valve (5) are respectively provided with a branch refrigerant pipe connected with the water-cooled heat exchanger (2), and each branch refrigerant pipe is respectively provided with the valve (17) and the valve (12).
4. The multifunctional heat pump unit according to claim 1, further comprising a third structural form, wherein the third structural form is based on the first structural form, 12 valves (18) replace a first four-way reversing valve (6), a second four-way reversing valve (10) and valves (11) - (16), wherein two ends of the compressor (4) and the expansion valve (5) are respectively connected with 1 main pipe, 4 main pipes are added, 3 branch pipes are separated from each main pipe, a valve (18) is respectively arranged on each branch pipe, 12 branch pipes and the valve (18) are added, 1 inlet branch pipe of the compressor (4) and 1 inlet branch pipe of the expansion valve (5) are combined into a group, 3 groups of inlet branch pipes are numbered A, B, C, 1 outlet branch pipe of the compressor (4) and 1 outlet branch pipe of the expansion valve (5) are combined into a group, 3 groups of outlet branch pipes are numbered a ', B ', C ', each group of outlet branch pipes are connected with one heat exchanger, three groups of heat exchangers are connected into a group of heat exchanger, and the heat exchanger can be switched into a heat exchanger (2) and a water cooler (2) according to requirements.
5. The heat pump assembly according to any one of claims 1 to 4, wherein the heat pump assembly is capable of simultaneously achieving five functions of supplying cold, supplying heat, supplying hot water for life, supplying cold while supplying hot water for life, and simultaneously supplying cold and heat by means of pipeline optimization and switching of valves.
6. The multifunctional heat pump unit according to claim 5, wherein when the multifunctional heat pump unit realizes independent cooling, the first four-way reversing valve (6) and the second four-way reversing valve (10) are switched, so that the first water-cooled heat exchanger (2) is used as an evaporator and the air-cooled heat exchanger (1) is used as a condenser; valve (11), valve (12), valve (15), valve (16) are opened, valve (13), valve (14) are closed, first water-cooled heat exchanger (2), chilled water pump (7) and water supply and return pipe operation, second water-cooled heat exchanger (3), hot-water tank (9), hot-water pump (8) and water supply and return pipe do not operate, air-cooled heat exchanger (1) is operating, heat pump set is supplying cold this moment, and the heat is discharged outdoors through air-cooled heat exchanger (1).
7. The multifunctional heat pump unit according to claim 5, wherein when the multifunctional heat pump unit realizes independent heat supply, the first four-way reversing valve (6) and the second four-way reversing valve (10) are switched, so that the first water-cooled heat exchanger (2) is used as a condenser and the air-cooled heat exchanger (1) is used as an evaporator; the valve (11), the valve (12), the valve (15) and the valve (16) are opened, the valve (13) and the valve (14) are closed, the first water-cooled heat exchanger (2), the chilled water pump (7) and a water supply and return pipe thereof are operated, the second water-cooled heat exchanger (3), the hot water tank (9), the hot water pump (8) and the water supply and return pipe thereof are not operated, and the air-cooled heat exchanger (1) is operated; at this time, the heat pump unit is supplying heat, and the heat is absorbed from the outdoor through the air cooling heat exchanger (1).
8. The multifunctional heat pump unit according to claim 5, wherein when the multifunctional heat pump unit is used for independently supplying domestic hot water, the first four-way reversing valve (6) and the second four-way reversing valve (10) are switched, the second water-cooled heat exchanger (3) is used as a condenser, and the air-cooled heat exchanger (1) is used as an evaporator; valve (13), valve (14), valve (15), valve (16) are opened, valve (11), valve (12) are closed, first water-cooled heat exchanger (2), chilled water pump (7) and water supply and return pipe do not operate, second water-cooled heat exchanger (3), hot water tank (9), hot water pump (8) and water supply and return pipe operate, air-cooled heat exchanger (1) operates, heat pump set is supplying domestic hot water this moment, and heat is absorbed from the outdoor through air-cooled heat exchanger (1).
9. The multifunctional heat pump unit according to claim 5, wherein when the multifunctional heat pump unit is used for supplying domestic hot water while cooling or is used for supplying cold and heat simultaneously, the first four-way reversing valve (6) and the second four-way reversing valve (10) are switched, so that the second water-cooled heat exchanger (3) is used as a condenser and the first water-cooled heat exchanger (2) is used as an evaporator; the valve (11), the valve (12), the valve (13) and the valve (14) are opened, and the valve (15) and the valve (16) are closed; the heat pump unit is used for supplying domestic hot water or air-conditioning hot water while cooling, and heat is transferred from the frozen water to the domestic hot water or the air-conditioning hot water.
10. The multifunctional heat pump unit according to any one of claims 1 to 4, wherein the air-cooled heat exchanger (1) is replaced by a photovoltaic photo-thermal integrated heat exchanger, a group of evaporation cold heat exchangers (26) are added at the same time, the photovoltaic photo-thermal integrated heat exchanger and the evaporation cold heat exchangers (26) are switched for use, and when the multifunctional heat pump unit is used as an evaporator, the photovoltaic photo-thermal integrated heat exchanger is started, and the evaporation cold heat exchangers (26) are closed; when the photovoltaic and photo-thermal integrated heat exchanger is used as a condenser, the evaporation cold heat exchanger (26) is started, and the photovoltaic and photo-thermal integrated heat exchanger is closed;
Wherein, the switching mode is: when the first structural form or the second structural form is adopted, a valve (19) and a valve (20) are arranged on an inlet pipe and an outlet pipe of the evaporative cooling heat exchanger (26) for switching control, and when the third structural form is adopted, one branch pipe grouping D, D ',4 valves (18) are added, and the evaporative cooling heat exchanger (26) is connected with the branch pipe grouping D, D'.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410410869.7A CN118347179A (en) | 2024-04-08 | 2024-04-08 | Multifunctional heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410410869.7A CN118347179A (en) | 2024-04-08 | 2024-04-08 | Multifunctional heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118347179A true CN118347179A (en) | 2024-07-16 |
Family
ID=91822050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410410869.7A Pending CN118347179A (en) | 2024-04-08 | 2024-04-08 | Multifunctional heat pump unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118347179A (en) |
-
2024
- 2024-04-08 CN CN202410410869.7A patent/CN118347179A/en active Pending
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