CN113483501A - Vortex type air source heat pump system - Google Patents
Vortex type air source heat pump system Download PDFInfo
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- CN113483501A CN113483501A CN202110649009.5A CN202110649009A CN113483501A CN 113483501 A CN113483501 A CN 113483501A CN 202110649009 A CN202110649009 A CN 202110649009A CN 113483501 A CN113483501 A CN 113483501A
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- 239000003507 refrigerant Substances 0.000 claims abstract description 83
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 238000005057 refrigeration Methods 0.000 claims abstract description 25
- 238000001035 drying Methods 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 46
- 230000006835 compression Effects 0.000 claims description 26
- 238000007906 compression Methods 0.000 claims description 26
- 239000013589 supplement Substances 0.000 claims description 11
- 230000001502 supplementing effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims 2
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
The invention provides a vortex type air source heat pump system, which belongs to the technical field of air source heat pumps and comprises the following components: the system comprises a refrigeration module refrigerant circulating system, a heating module refrigerant circulating system and a medium-pressure tank pipeline, wherein the refrigeration module refrigerant circulating system, the heating module refrigerant circulating system and the medium-pressure tank pipeline jointly form the vortex type air source heat pump system; the refrigeration module refrigerant circulating system comprises a fin heat exchanger, a drying filter, a shell and tube heat exchanger, a scroll compressor, a medium-pressure tank, an electronic expansion valve, an electromagnetic valve, a one-way valve and the like, and the heating module refrigerant circulating system comprises the fin heat exchanger, the scroll compressor, the shell and tube heat exchanger, the drying filter, the medium-pressure tank, the electronic expansion valve, the electromagnetic valve, the one-way valve and the like. The system is applied to the ultralow-temperature air source heat pump with a wide operating range of the two-stage scroll compressor, and the refrigerant of the air source heat pump unit is distributed and regulated through the system, so that the regulation precision is improved.
Description
Technical Field
The invention relates to the technical field of air source heat pumps, in particular to a vortex type air source heat pump system.
Background
The air contains huge low-grade energy, and the air source heat pump extracts the energy in the air, so that the air source heat pump is used as an energy-saving and environment-friendly technology, has good safety, is convenient to install and use, and is widely applied in the world.
At present, a vortex type low-temperature air source heat pump on the market generally comprises a single system, a vortex type compressor, a fin type heat exchanger, a shell and tube heat exchanger, a four-way reversing valve, an oil separator, a throttling device, an economizer system, a liquid storage device, a gas-liquid separator and the like, wherein the amount of refrigerant required by the refrigeration working condition of the air source heat pump is larger than that required by the heating working condition, the running working condition range of the ultralow-temperature air source heat pump is wider, the difference of the amount of refrigerant required by the refrigeration and heating modes is larger than that of the conventional air source heat pump, the adjustment and control are carried out only through the refrigerant storage function of the liquid storage device and the gas-liquid separator, the adjustment precision is extremely low, and the energy efficiency is influenced.
Disclosure of Invention
In view of the above, embodiments of the present invention are proposed to provide a scroll type air source heat pump system that overcomes or at least partially solves the above problems.
According to a first aspect of the present invention, there is provided a scroll type air source heat pump system comprising: the system comprises a refrigeration module refrigerant circulating system, a heating module refrigerant circulating system and a medium-pressure tank pipeline, wherein the refrigeration module refrigerant circulating system, the heating module refrigerant circulating system and the medium-pressure tank pipeline jointly form the vortex type air source heat pump system;
the refrigeration module refrigerant circulating system is formed by sequentially communicating a finned heat exchanger, a one-way valve, a drying filter, an electronic expansion valve I, the one-way valve, a shell and tube heat exchanger, a four-way reversing valve, a pressure sensor I, a temperature sensor I, a scroll compressor, a pressure sensor II, a temperature sensor II, the four-way reversing valve and the finned heat exchanger to form a refrigeration circulating loop;
the heating module refrigerant circulating system is formed by sequentially communicating the finned heat exchanger, the four-way reversing valve, the pressure sensor I, the temperature sensor I, the scroll compressor, the pressure sensor II, the temperature sensor II, the four-way reversing valve, the shell and tube heat exchanger, the one-way valve, the drying filter, the electronic expansion valve I, the one-way valve and the finned heat exchanger to form a heating circulating loop;
the medium-pressure tank pipeline comprises a medium-pressure tank, a solenoid valve III, a solenoid valve V, a solenoid valve IV, an electronic expansion valve II, the one-way valve, a solenoid valve I and a solenoid valve II, wherein the electromagnetic valve III, the oil separator, the pressure sensor II and the temperature sensor II are arranged between the middle pressure tank and the exhaust pipe of the scroll compressor, the middle of the middle pressure tank is connected with the air supplement pipe of the scroll compressor and is provided with the electromagnetic valve V, the electromagnetic valve IV is arranged between the middle pressure tank and the suction pipe of the scroll compressor, the electronic expansion valve II and the drying filter are arranged between the middle pressure tank and the shell and tube heat exchanger, the medium pressure jar with the check valve, solenoid valve I connects gradually, the medium pressure jar with solenoid valve II, the check valve connects gradually.
Optionally, the scroll compressor includes:
the scroll compressor comprises an exhaust pipe, a secondary compression cavity, a primary compression cavity, an air suction pipe, an air supplementing pipe, a motor cavity and an oil return pipe, wherein the exhaust pipe is connected with the medium-pressure tank through the electromagnetic valve III, the air suction pipe is connected with the medium-pressure tank through the electromagnetic valve IV, and the air supplementing pipe is connected with the medium-pressure tank through the electromagnetic valve V.
Optionally, the scroll compressor includes, when in an operating state:
and the low-temperature low-pressure gaseous refrigerant is sucked from the air suction pipe, primary compression is carried out in a primary compression cavity, the medium-temperature medium-pressure gaseous refrigerant after the primary compression is discharged into the motor cavity, the low-temperature medium-pressure gaseous refrigerant after the gas supplement and enthalpy increase from the medium-pressure tank is mixed and then enters a secondary compression cavity for secondary compression, and the high-temperature high-pressure gaseous refrigerant after the secondary compression is discharged from the exhaust pipe.
Optionally, when the scroll-type air source heat pump system is not in an operating state, the scroll-type air source heat pump system includes:
liquid refrigerant in the vortex type air source heat pump system is completely transferred to the medium-pressure tank through the solenoid valve I to be stored.
Optionally, when the scroll type air source heat pump system is in an operating state, the scroll type air source heat pump system includes:
and the electromagnetic valve II is opened, the liquid refrigerant in the medium-pressure tank enters the vortex type air source heat pump system through the electromagnetic valve II for circulation, the opening and the pause of the electromagnetic valve II are controlled according to the suction pressure measured by the pressure sensor I and the suction temperature measured by the temperature sensor I, and the liquid supply process of the medium-pressure tank to the vortex type air source heat pump system is controlled.
Optionally, the scroll-type air source heat pump system comprises:
the medium-pressure tank is connected with the exhaust pipe of the scroll compressor through the electromagnetic valve III.
Optionally, the scroll-type air source heat pump system comprises:
the medium pressure tank is connected with the air suction pipe of the scroll compressor through the electromagnetic valve IV.
Optionally, the scroll-type air source heat pump system comprises:
the medium-pressure tank is connected with the air supplementing pipe of the scroll compressor through the electromagnetic valve V.
Optionally, when the scroll-type air source heat pump system is in a heating condition, the scroll-type air source heat pump system comprises:
along with the temperature reduction, the amount of the liquid refrigerant required by the vortex type air source heat pump system is gradually reduced, and the redundant liquid refrigerant is transferred to the middle pressure tank through the electromagnetic valve I and is accurately regulated and controlled through the electronic expansion valve II.
The embodiment of the invention provides a vortex type air source heat pump system, which comprises: the system comprises a refrigeration module refrigerant circulating system, a heating module refrigerant circulating system and a medium-pressure tank pipeline, wherein the refrigeration module refrigerant circulating system, the heating module refrigerant circulating system and the medium-pressure tank pipeline jointly form the vortex type air source heat pump system; the refrigeration module refrigerant circulating system is formed by sequentially communicating a finned heat exchanger, a one-way valve, a drying filter, an electronic expansion valve I, the one-way valve, a shell and tube heat exchanger, a four-way reversing valve, a pressure sensor I, a temperature sensor I, a scroll compressor, a pressure sensor II, a temperature sensor II, the four-way reversing valve and the finned heat exchanger to form a refrigeration circulating loop; the heating module refrigerant circulating system is formed by sequentially communicating the finned heat exchanger, the four-way reversing valve, the pressure sensor I, the temperature sensor I, the scroll compressor, the pressure sensor II, the temperature sensor II, the four-way reversing valve, the shell and tube heat exchanger, the one-way valve, the drying filter, the electronic expansion valve I, the one-way valve and the finned heat exchanger to form a heating circulating loop; the medium-pressure tank pipeline comprises a medium-pressure tank, a solenoid valve III, a solenoid valve V, a solenoid valve IV, an electronic expansion valve II, the one-way valve, a solenoid valve I and a solenoid valve II, wherein the electromagnetic valve III, the oil separator, the pressure sensor II and the temperature sensor II are arranged between the middle pressure tank and the exhaust pipe of the scroll compressor, the middle of the middle pressure tank is connected with the air supplement pipe of the scroll compressor and is provided with the electromagnetic valve V, the electromagnetic valve IV is arranged between the middle pressure tank and the suction pipe of the scroll compressor, the electronic expansion valve II and the drying filter are arranged between the middle pressure tank and the shell and tube heat exchanger, the medium pressure jar with the check valve, solenoid valve I connects gradually, the medium pressure jar with solenoid valve II, the check valve connects gradually.
When the vortex type air source heat pump system heats, redundant refrigerants are stored in the medium-pressure tank, and the refrigerants in the system are distributed in real time through the medium-pressure tank and the related valve piece pipelines, so that the adjustment is more accurate, the energy efficiency of the unit can be improved, and the liquid carrying risk in the operation process of the unit is reduced. The medium-pressure tank is used for replacing parts such as an economizer system, a liquid storage device, a gas-liquid separator and the like, so that the unit cost is reduced, and the occupied space of the structure is reduced; after the machine is stopped, the refrigerant in the vortex type air source heat pump system is transferred into the medium-pressure tank, so that liquid impact caused by liquid carrying during starting is avoided.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic block diagram of a scroll-type air-source heat pump system according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a scroll compressor according to an embodiment of the present invention.
Description of reference numerals:
1-a finned heat exchanger; 2-a one-way valve; 3-an electromagnetic valve I; 4-a one-way valve; 5-a one-way valve; 6-a liquid level sensor; 7-pressure sensor iii; 8-medium pressure tank; 9-electromagnetic valve II; 10-an electromagnetic valve; 11-electromagnetic valve III; 12-solenoid valve V; 13-solenoid valve IV; a 14-four-way reversing valve; 15-electronic expansion valve II; 16-a dry filter; 17-electronic expansion valve I; an 18-oil separator; 19-temperature sensor II; 20-pressure sensor II; 21-a scroll compressor; 22-a pressure sensor I; 23-temperature sensor I; 24-drying the filter; 25-a one-way valve; 26-a one-way valve; 27-an oil return filter; 28-a capillary tube; 29-liquid sight glass; 30-shell and tube heat exchanger; 210-an exhaust pipe; 211-secondary compression chamber; 212-a primary compression chamber; 213-an air suction pipe; 214-air supplement pipe; 215-motor cavity; 216-oil return pipe.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is illustrative only and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure.
It should be noted that directional terms such as "upper", "lower", "front", "rear", "left", "right", etc. in the embodiments are directions only referring to the drawings, and when the orientation of the element/component is changed, "upper" in the corresponding structure may be changed to "lower", so that the above description is not to be understood in an absolute sense for the sake of clarity of description of relative position, and the above description is not intended to limit the protection scope of the present disclosure. Throughout the drawings, like elements are represented by like or similar reference numerals. Conventional structures or constructions will be omitted when they may obscure the understanding of the present disclosure.
The shapes and dimensions of the components in the drawings are not to reflect actual sizes and proportions, but are merely illustrative of the contents of the embodiments of the present disclosure. Furthermore, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Referring to fig. 1, an embodiment of the present invention provides a scroll type air source heat pump system, including: the system comprises a refrigeration module refrigerant circulating system, a heating module refrigerant circulating system and a medium-pressure tank pipeline, wherein the refrigeration module refrigerant circulating system, the heating module refrigerant circulating system and the medium-pressure tank pipeline jointly form the vortex type air source heat pump system; the refrigeration module refrigerant circulating system is formed by sequentially communicating a finned heat exchanger 1, a one-way valve 2, a drying filter 16, an electronic expansion valve I17, a one-way valve 26, a shell and tube heat exchanger 30, a four-way reversing valve 14, a pressure sensor I22, a temperature sensor I23, a scroll compressor 21, a pressure sensor II 20, a temperature sensor II 19, the four-way reversing valve 14 and the finned heat exchanger 1 to form a refrigeration circulating loop; the heating module refrigerant circulating system is formed by sequentially communicating the finned heat exchanger 1, the four-way reversing valve 14, the pressure sensor I22, the temperature sensor I23, the scroll compressor 21, the pressure sensor II 20, the temperature sensor II 19, the four-way reversing valve 14, the shell and tube heat exchanger 30, the check valve 5, the drying filter 16, the electronic expansion valve I17, the check valve 25 and the finned heat exchanger 1; the medium-pressure tank pipeline comprises a medium-pressure tank 8, an electromagnetic valve III 11, an electromagnetic valve V12, an electromagnetic valve IV 13, an electronic expansion valve II 15, a one-way valve 4, an electromagnetic valve 13 and an electromagnetic valve II 9, wherein the electromagnetic valve III 11, an oil separator 18, a pressure sensor II 20 and a temperature sensor II 19 are arranged in the middle of the connection of the medium-pressure tank 8 and an exhaust pipe of the scroll compressor 21, the electromagnetic valve V12 is arranged in the middle of the connection of the medium-pressure tank 8 and an air supplementing port of the scroll compressor 21, the electromagnetic valve IV 13 is arranged in the middle of the connection of the medium-pressure tank 8 and an air suction pipe of the scroll compressor 21, the electronic expansion valve II 15 and the drying filter 24 are arranged in the middle of the connection of the medium-pressure tank 8 and the shell-tube heat exchanger 30, the medium-pressure tank 8 and the one-way valve 4 and the electromagnetic valve 13 are sequentially connected, and the medium-pressure tank 8 and the electromagnetic valve II 9, The check valves 10 are connected in sequence.
In an embodiment of the present invention, specifically, in the scroll type air source heat pump system, as shown in fig. 2, the scroll compressor 21 includes an exhaust pipe 210, a secondary compression cavity 211, a primary compression cavity 212, an intake pipe 213, an air supplement pipe 214, a motor cavity 215, and an oil return pipe 216, where the exhaust pipe 210 is connected to the medium pressure tank 8 through the electromagnetic valve iii 11, the intake pipe 213 is connected to the medium pressure tank 8 through the electromagnetic valve iv 13, and the air supplement pipe 214 is connected to the medium pressure tank 8 through the electromagnetic valve v 12. When the scroll compressor works, low-temperature low-pressure gaseous refrigerant is sucked from the suction pipe 213, primary compression is carried out in the primary compression cavity 212, medium-temperature medium-pressure gaseous refrigerant after the primary compression is discharged into the motor cavity 215, the low-temperature medium-pressure gaseous refrigerant which is subjected to gas supplementing and enthalpy increasing and is mixed from the medium-pressure tank 8 enters the secondary compression cavity 211 to be subjected to secondary compression, and high-temperature high-pressure gaseous refrigerant after the secondary compression is discharged from the exhaust pipe 210.
When the vortex type air source heat pump system is not in a working state, liquid refrigerants in the vortex type air source heat pump system are all transferred to the medium-pressure tank 8 through the electromagnetic valve I3 to be stored. The vortex type low-temperature air source heat pump on the market generally comprises a single system, a vortex type compressor, a fin type heat exchanger, a shell and tube heat exchanger, a four-way reversing valve, an oil separator, a throttling device, an economizer system, a liquid storage device, a gas-liquid separator and other parts. In the embodiment of the invention, the medium-pressure tank is used for replacing components such as an economizer system, a liquid storage device, a gas-liquid separator and the like, so that the unit cost is reduced, and the occupied space of the structure is reduced. After the machine is stopped, the refrigerant in the vortex type air source heat pump system is transferred into the medium-pressure tank, so that liquid impact caused by liquid carrying during starting is avoided.
When the vortex type air source heat pump system is in a working state, the electromagnetic valve II 9 is opened, the liquid refrigerant in the medium-pressure tank 8 enters the vortex type air source heat pump system through the electromagnetic valve II 9 for circulation, the opening and the pause of the electromagnetic valve II 9 are controlled according to the suction pressure measured by the pressure sensor I22 and the suction temperature measured by the temperature sensor I23, and the liquid supply process of the medium-pressure tank 8 to the vortex type air source heat pump system is controlled.
In the scroll type air source heat pump system, specifically, the intermediate pressure tank 8 is connected to the suction pipe 213 of the scroll compressor 21 through the solenoid valve iv 13.
Along with the change of the operation condition, when the suction pressure measured by the pressure sensor I22 and the suction temperature measured by the temperature sensor I23 judge that the medium-pressure tank 8 needs to supplement liquid refrigerant into the vortex type air source heat pump system; whether the electromagnetic valve III 11 needs to be opened or not is judged through the suction pressure measured by the pressure sensor I22 and the pressure in the medium-pressure tank measured by the pressure sensor III 7, and the pressure in the medium-pressure tank 8 can be rapidly increased after the electromagnetic valve III 11 is opened, so that the liquid refrigerant in the medium-pressure tank 8 can more rapidly enter the vortex type air source heat pump system for circulation, and the regulation has real-time performance.
In the scroll type air source heat pump system, specifically, the intermediate pressure tank 8 is connected to the suction pipe 213 of the scroll compressor 21 through the electromagnetic valve iv 13. Along with the change of the operation condition, when the suction pressure measured by the pressure sensor I22 and the suction temperature measured by the temperature sensor I23 judge that the liquid refrigerant in the scroll type air source heat pump system is too much, the redundant liquid refrigerant needs to be transferred into the medium pressure tank 8, whether the electromagnetic valve IV 13 needs to be opened or not is judged through the suction pressure measured by the pressure sensor I22 and the pressure in the medium pressure tank 8 measured by the pressure sensor III 7, the pressure in the medium pressure tank 8 can be rapidly reduced after the electromagnetic valve IV 13 is opened, so that the liquid refrigerant in the scroll type air source heat pump system can more rapidly enter the medium pressure tank 8 for storage, and the regulation has more real-time performance.
In the scroll type air source heat pump system, specifically, the medium-pressure tank 8 is connected with the air supplementing pipe 214 of the scroll compressor 21 through the electromagnetic valve V12, the start and stop of the electromagnetic valve V12 are controlled according to the residual amount of the liquid refrigerant measured by the liquid level sensor 6, the exhaust pressure measured by the pressure sensor II 20 and the exhaust temperature measured by the temperature sensor II 19, and part of the liquid refrigerant is diffused into gas to enter the scroll compressor 21 to supplement air and increase enthalpy. Under this function medium pressure jar 8 acts as the flash tank effect, because be liquid refrigerant and saturated gaseous state refrigerant in the medium pressure jar 8, the shortcoming of possessing the flash tank can't be avoided: after the electromagnetic valve V12 is opened, the refrigerant in the liquid-separating state can enter the scroll compressor 21 in the form of liquid drops, and certain liquid carrying risks exist. And the air supplement pipe 214 of the scroll compressor 21 is connected with the motor cavity 215, and the unique structure perfectly avoids the risk of liquid impact.
In the vortex type air source heat pump system, specifically, under the heating condition, along with the temperature reduction, the amount of liquid refrigerant required by the vortex type air source heat pump system is gradually reduced, redundant liquid refrigerant is transferred to the medium-pressure tank 8 through the electromagnetic valve I3, and accurate regulation and control are carried out through the electronic expansion valve II 15, so that the unit is ensured to be in a high-efficiency state in real time. During heating, redundant refrigerant is stored in the medium-pressure tank 8, and the refrigerant in the system is distributed in real time through the medium-pressure tank 8 and the related valve pipelines, so that the adjustment is more accurate.
The embodiment of the invention provides a vortex type air source heat pump system, which is characterized by comprising the following components: the system comprises a refrigeration module refrigerant circulating system, a heating module refrigerant circulating system and a medium-pressure tank pipeline, wherein the refrigeration module refrigerant circulating system, the heating module refrigerant circulating system and the medium-pressure tank pipeline jointly form the vortex type air source heat pump system; the refrigeration module refrigerant circulating system is formed by sequentially communicating a finned heat exchanger 1, a one-way valve 2, a drying filter 16, an electronic expansion valve I17, a one-way valve 26, a shell and tube heat exchanger 30, a four-way reversing valve 14, a pressure sensor I22, a temperature sensor I23, a scroll compressor 21, a pressure sensor II 20, a temperature sensor II 19, the four-way reversing valve 14 and the finned heat exchanger 1 to form a refrigeration circulating loop; the heating module refrigerant circulating system is formed by sequentially communicating the fin heat exchanger 1, the four-way reversing valve 14, the pressure sensor I22, the temperature sensor I23, the scroll compressor 21, the pressure sensor II 20, the temperature sensor II 19, the four-way reversing valve 14, the shell and tube heat exchanger 30, the check valve 5, the drying filter 16, the electronic expansion valve 117, the check valve 25 and the fin heat exchanger 1; the medium-pressure tank pipeline comprises a medium-pressure tank 8, an electromagnetic valve III 11, an electromagnetic valve V12, an electromagnetic valve IV 13, an electronic expansion valve II 15, a one-way valve 4, an electromagnetic valve 13 and an electromagnetic valve II 9, wherein the electromagnetic valve III 11, an oil separator 18, a pressure sensor II 20 and a temperature sensor II 19 are arranged in the middle of the connection of the medium-pressure tank 8 and an exhaust pipe of the scroll compressor 21, the electromagnetic valve V12 is arranged in the middle of the connection of the medium-pressure tank 8 and an air supplementing port of the scroll compressor 21, the electromagnetic valve IV 13 is arranged in the middle of the connection of the medium-pressure tank 8 and an air suction pipe of the scroll compressor 21, the electronic expansion valve II 15 and the drying filter 24 are arranged in the middle of the connection of the medium-pressure tank 8 and the shell-tube heat exchanger 30, the medium-pressure tank 8 and the one-way valve 4 and the electromagnetic valve 13 are sequentially connected, and the medium-pressure tank 8 and the electromagnetic valve II 9, The check valves 10 are connected in sequence. During heating, redundant refrigerants are stored in the medium-pressure tank, the refrigerants in the system are distributed in real time through the medium-pressure tank and the related valve pipelines, the adjustment is more accurate, and the unit heating efficiency is higher. And after the system is shut down, the refrigerant in the system is transferred into the medium-pressure tank, so that liquid impact caused by liquid carrying during starting is avoided.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A scroll-type air source heat pump system, comprising: the system comprises a refrigeration module refrigerant circulating system, a heating module refrigerant circulating system and a medium-pressure tank pipeline, wherein the refrigeration module refrigerant circulating system, the heating module refrigerant circulating system and the medium-pressure tank pipeline jointly form the vortex type air source heat pump system;
the refrigeration module refrigerant circulating system is formed by sequentially communicating a fin heat exchanger (1), a one-way valve (2), a drying filter (16), an electronic expansion valve I (17), a one-way valve (26), a shell and tube heat exchanger (30), a four-way reversing valve (14), a pressure sensor I (22), a temperature sensor I (23), a scroll compressor (21), a pressure sensor II (20) and a temperature sensor II (19) to form a refrigeration circulating loop;
the heating module refrigerant circulating system is formed by sequentially communicating the fin heat exchanger (1), the four-way reversing valve (14), the pressure sensor I (22), the temperature sensor I (23), the scroll compressor (21), the pressure sensor II (20), the temperature sensor II (19), the four-way reversing valve (14), the shell and tube heat exchanger (30), the one-way valve (5), the drying filter (16), the electronic expansion valve I (17), the one-way valve (25) and the fin heat exchanger (1) to form a heating circulating loop;
the medium-pressure tank pipeline comprises a medium-pressure tank (8), a solenoid valve III (11), a solenoid valve V (12), a solenoid valve IV (13), an electronic expansion valve II (15), a check valve (4), a solenoid valve I (3) and a solenoid valve II (9), wherein the solenoid valve III (11), an oil separator (18), a pressure sensor II (20) and a temperature sensor II (21) are arranged in the middle of the connection of the medium-pressure tank (8) and an exhaust pipe of the scroll compressor (21), the solenoid valve V (12) is arranged in the middle of the connection of the medium-pressure tank (8) and an air supplementing port of the scroll compressor (21), the solenoid valve IV (13) is arranged in the middle of the connection of the medium-pressure tank (8) and the shell and tube heat exchanger (30), and the electronic expansion valve II (15) is arranged in the middle of the connection of the shell and tube heat exchanger (30), The drying filter (24), medium pressure jar (8) with check valve (4), solenoid valve I (3) connect gradually, medium pressure jar (8) with solenoid valve II (9), check valve (10) connect gradually.
2. The scroll type air source heat pump system according to claim 1, wherein the scroll compressor (21) comprises an exhaust pipe (210), a secondary compression cavity (211), a primary compression cavity (212), an air suction pipe (213), an air supplement pipe (214), a motor cavity (215) and an oil return pipe (216), wherein the exhaust pipe (210) is connected with the medium pressure tank (8) through the solenoid valve III (11), the air suction pipe (213) is connected with the medium pressure tank (8) through the solenoid valve IV (13), and the air supplement pipe (214) is connected with the medium pressure tank (8) through the solenoid valve V (12).
3. The scroll air source heat pump system according to claim 2, wherein the scroll compressor (21) when in an operating state comprises:
low-temperature low-pressure gaseous refrigerant is sucked from the air suction pipe (213), primary compression is carried out in a primary compression cavity (212), medium-temperature medium-pressure gaseous refrigerant after the primary compression is discharged into the motor cavity (215), the low-temperature medium-pressure gaseous refrigerant which is mixed with air and enthalpy added from the medium-pressure tank (8) enters a secondary compression cavity (211) for secondary compression, and high-temperature high-pressure gaseous refrigerant after the secondary compression is discharged from the exhaust pipe (210).
4. The scroll type air source heat pump system according to claim 1, wherein when the scroll type air source heat pump system is not in an operating state, all liquid refrigerant in the scroll type air source heat pump system is transferred to the medium-pressure tank (8) through the solenoid valve I (3) for storage.
5. The scroll type air source heat pump system according to claim 1, wherein when the scroll type air source heat pump system is in an operating state, the solenoid valve II (9) is opened, the liquid refrigerant in the medium-pressure tank (8) enters the scroll type air source heat pump system through the solenoid valve II (9) for circulation, the opening and the pause of the solenoid valve II (9) are controlled according to the suction pressure measured by the pressure sensor I (22) and the suction temperature measured by the temperature sensor I (23), and the liquid supply process of the medium-pressure tank (8) into the scroll type air source heat pump system is controlled.
6. The scroll air source heat pump system according to claim 1, wherein the medium pressure tank (8) is connected to the exhaust pipe (210) of the scroll compressor (21) through the solenoid valve iii (11).
7. The scroll type air source heat pump system according to claim 1, wherein the medium pressure tank (8) is connected with the suction pipe (213) of the scroll compressor (21) through the solenoid valve iv (13) 013.
8. The scroll air source heat pump system according to claim 1, wherein the medium pressure tank (8) is connected with the air supply pipe (214) of the scroll compressor (21) through the solenoid valve v (12).
9. The scroll type air source heat pump system according to claim 1, wherein in a heating condition, as the temperature decreases, the amount of the liquid refrigerant required by the scroll type air source heat pump system gradually decreases, and the redundant liquid refrigerant is transferred to the medium-pressure tank (8) through the solenoid valve I (3) and regulated through the electronic expansion valve II (9).
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| CN202110649009.5A CN113483501B (en) | 2021-06-10 | 2021-06-10 | Vortex type air source heat pump system |
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| CN202110649009.5A CN113483501B (en) | 2021-06-10 | 2021-06-10 | Vortex type air source heat pump system |
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| CN211668068U (en) * | 2020-04-01 | 2020-10-13 | 广东冰杉制冷科技有限公司 | Three-in-one heat exchanger |
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2021
- 2021-06-10 CN CN202110649009.5A patent/CN113483501B/en active Active
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| WO2013131436A1 (en) * | 2012-03-05 | 2013-09-12 | Rong Guohua | Air-conditioning unit with heat recovery |
| WO2013133622A1 (en) * | 2012-03-08 | 2013-09-12 | Kim Bong Suck | Refrigerating cycle of refrigerator |
| CN109631381A (en) * | 2018-11-09 | 2019-04-16 | 青岛沃润达新能源科技有限公司 | A kind of vortex type air source heat pump system of the simultaneous refrigeration of heating |
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| CN113483501B (en) | 2023-01-17 |
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