CN113606821A - Air source heat pump device, control method and storage medium - Google Patents
Air source heat pump device, control method and storage medium Download PDFInfo
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- CN113606821A CN113606821A CN202111015689.1A CN202111015689A CN113606821A CN 113606821 A CN113606821 A CN 113606821A CN 202111015689 A CN202111015689 A CN 202111015689A CN 113606821 A CN113606821 A CN 113606821A
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000003507 refrigerant Substances 0.000 claims abstract description 316
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 230000005494 condensation Effects 0.000 claims abstract description 23
- 238000009833 condensation Methods 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 230000004044 response Effects 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 5
- 239000002826 coolant Substances 0.000 abstract description 10
- 230000017525 heat dissipation Effects 0.000 description 53
- 239000003570 air Substances 0.000 description 46
- 238000010438 heat treatment Methods 0.000 description 16
- 239000007788 liquid Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 238000000926 separation method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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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
- F25B39/00—Evaporators; Condensers
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/04—Preventing the formation of frost or condensate
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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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses air source heat pump equipment, a control method and a storage medium, and relates to the technical field of heat pumps; the system comprises a refrigerant circulation loop, wherein the refrigerant circulation loop comprises a compressor, a water side heat exchanger, a refrigerant radiating pipe, a temperature detection device and a refrigerant bypass flow path, the temperature detection device is arranged on the refrigerant radiating pipe, and the refrigerant bypass flow path comprises a first throttling device, a refrigerant inlet connected with an exhaust port of the compressor and a refrigerant outlet positioned between the water side heat exchanger and the refrigerant radiating pipe; the control device is used for controlling the first throttling device according to the pipeline temperature sent by the temperature detection device, and the temperature of the cooling pipe of the cooling medium is adjusted by the cooling medium output by the compressor, so that the probability of condensation can be reduced.
Description
Technical Field
The invention belongs to the technical field of heat pumps, and particularly relates to an air source heat pump device, a control method and a storage medium.
Background
At present, air source heat pump equipment adopts air-cooled variable frequency electric control, the cooling medium heat dissipation is a trend, the air source heat pump equipment outputs high-temperature and high-pressure gaseous cooling medium through a compressor, heat is exchanged with water through a water side heat exchanger to complete heating, and the high-temperature and high-pressure gaseous cooling medium is returned to the compressor through cooling medium heat dissipation pipes, electronic expansion valves, evaporators and other devices in sequence to form cooling medium circulation. If the return water temperature of water side heat exchanger is crossed lowly, lead to the refrigerant temperature of refrigerant cooling tube to cross lowly easily to cause the phenomenon of condensation to take place for positions such as refrigerant cooling tube or near the refrigerant cooling tube frequency conversion module easily.
Disclosure of Invention
The invention mainly aims to provide air source heat pump equipment, a control method and a storage medium, which can reduce the probability of condensation.
In a first aspect, an embodiment of the present invention provides an air source heat pump apparatus, including a refrigerant circulation loop, where the refrigerant circulation loop includes a compressor, a water-side heat exchanger, and a refrigerant heat dissipation pipe, and the refrigerant circulation loop further includes:
the temperature detection device is used for detecting the temperature of a pipeline, and the temperature of the pipeline is used for representing the temperature of the refrigerant radiating pipe;
the refrigerant bypass flow path comprises a first throttling device, a refrigerant inlet and a refrigerant outlet, the refrigerant inlet is connected with an exhaust port of the compressor, and the refrigerant outlet is positioned between the water side heat exchanger and the refrigerant radiating pipe;
and the control device is used for controlling the first throttling device according to the temperature of the pipeline and adjusting the temperature of the refrigerant radiating pipe by using the refrigerant output by the compressor.
According to the embodiment of the first aspect of the invention, at least the following advantages are achieved: in the heating mode, the high-temperature refrigerant output by the compressor is sent to the water side heat exchanger, and the heat exchange between the high-temperature refrigerant and the cold water of the water side heat exchanger is changed into the low-temperature refrigerant to be output. When microthermal refrigerant returns the compressor through the refrigerant cooling tube, temperature-detecting device detects the pipeline temperature of refrigerant cooling tube, and send pipeline temperature for controlling means, controlling means is according to the first throttling arrangement of pipeline temperature control, the high temperature gaseous state refrigerant of the gas vent output of compressor is exported from the refrigerant export of refrigerant bypass flow path through first throttling arrangement, mix with the microthermal refrigerant of water side heat exchanger output, thereby improve the temperature of refrigerant cooling tube, reduce the pipeline temperature of refrigerant cooling tube and ambient temperature's the difference in temperature, and then reduce the probability of taking place the condensation.
According to some embodiments of the first aspect of the present invention, the first throttling device is a solenoid valve, and the control device is specifically configured to:
and responding to the condition that the temperature of the pipeline is less than the ambient temperature, controlling the electromagnetic valve to be conducted, and utilizing the refrigerant output by the compressor to improve the temperature of the refrigerant radiating pipe.
According to some embodiments of the first aspect of the present invention, after the control device controls the solenoid valve to conduct, the control device is further specifically configured to:
closing the solenoid valve in response to the line temperature being greater than a first temperature threshold, wherein the first temperature threshold is greater than a dew condensation temperature.
According to some embodiments of the first aspect of the present invention, the first throttling device is an electronic expansion valve, and the control device is specifically configured to:
and responding to the condition that the temperature of the pipeline is less than the ambient temperature, adjusting the opening degree of the electronic expansion valve at intervals of a first time interval according to the temperature of the pipeline and the ambient temperature, and increasing the temperature of the refrigerant radiating pipe by using the refrigerant output by the compressor.
According to some embodiments of the first aspect of the present invention, the control device is further specifically configured to:
and controlling the compressor to stop running for a second time period in response to the time that the pipeline temperature is lower than the ambient temperature exceeding a first time threshold.
According to some embodiments of the first aspect of the present invention, after the compressor stops operating for the second period of time, the control device is further specifically configured to:
and controlling the compressor to start running in response to the time that the pipeline temperature is greater than or equal to a second temperature threshold value and exceeds a second time threshold value.
In a second aspect, an embodiment of the present invention further provides a control method of an air source heat pump apparatus, where the air source heat pump apparatus includes a refrigerant circulation loop, the refrigerant circulation loop includes a compressor, a water-side heat exchanger and a refrigerant heat dissipation pipe, the refrigerant circulation loop further includes a temperature detection device and a refrigerant bypass flow path, and the temperature detection device is disposed on the refrigerant heat dissipation pipe; the refrigerant bypass flow path comprises a first throttling device, a refrigerant inlet and a refrigerant outlet, the refrigerant inlet is connected with an exhaust port of the compressor, and the refrigerant outlet is positioned between the water side heat exchanger and the refrigerant radiating pipe;
the control method comprises the following steps:
acquiring the pipeline temperature of the refrigerant radiating pipe sent by the temperature detection device;
and controlling the first throttling device according to the temperature of the pipeline, and adjusting the temperature of the refrigerant radiating pipe by using the refrigerant output by the compressor.
According to the embodiment of the second aspect of the invention, at least the following advantages are achieved: in the heating mode, the high-temperature refrigerant output by the compressor is sent to the water side heat exchanger, and the heat exchange between the high-temperature refrigerant and the cold water of the water side heat exchanger is changed into the low-temperature refrigerant to be output. When microthermal refrigerant returns the compressor through the refrigerant cooling tube, temperature-detecting device detects the pipeline temperature of refrigerant cooling tube, and send pipeline temperature for controlling means, controlling means is according to the first throttling arrangement of pipeline temperature control, the high temperature gaseous state refrigerant of the gas vent output of compressor is exported from the refrigerant export of refrigerant bypass flow path through first throttling arrangement, mix with the microthermal refrigerant of water side heat exchanger output, thereby improve the temperature of refrigerant cooling tube, reduce the pipeline temperature of refrigerant cooling tube and ambient temperature's the difference in temperature, and then reduce the probability of taking place the condensation.
According to some embodiments of the second aspect of the present invention, the first throttling means is a solenoid valve;
the controlling the first throttling device according to the pipeline temperature and adjusting the temperature of the refrigerant radiating pipe by using the refrigerant output by the compressor comprises the following steps:
when the temperature of the pipeline is lower than the ambient temperature, the electromagnetic valve is controlled to be conducted, and the temperature of the refrigerant radiating pipe is increased by using the refrigerant output by the compressor.
According to some embodiments of the second aspect of the invention, after said controlling the solenoid valve to conduct, the control method further comprises:
and when the temperature of the pipeline is greater than a first temperature threshold value, closing the electromagnetic valve, wherein the first temperature threshold value is greater than the condensation temperature.
According to some embodiments of the second aspect of the present invention, the first flow restriction device is an electronic expansion valve; the controlling the first throttling device according to the pipeline temperature and adjusting the temperature of the refrigerant radiating pipe by using the refrigerant output by the compressor comprises the following steps:
when the temperature of the pipeline is lower than the ambient temperature, the opening degree of the electronic expansion valve is adjusted at intervals of a first time interval according to the temperature of the pipeline and the ambient temperature, and the temperature of the refrigerant radiating pipe is increased by using the refrigerant output by the compressor.
According to some embodiments of the second aspect of the invention, the control method further comprises:
and when the time that the pipeline temperature is lower than the ambient temperature exceeds a first time threshold, controlling the compressor to stop running for a second time.
According to some embodiments of the second aspect of the present invention, after the controlling the compressor to stop operating for the second period of time, the control method further comprises:
and when the time that the pipeline temperature is greater than or equal to the second temperature threshold exceeds a second time threshold, controlling the compressor to start to operate.
In a third aspect, an embodiment of the present invention further provides an air source heat pump apparatus, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the control method according to any one of the second aspect when executing the computer program.
In a fourth aspect, the embodiment of the present invention further provides a computer-readable storage medium, where computer-executable instructions are stored, and the computer-executable instructions are configured to cause a computer to execute the control method according to any one of the second aspects.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
Fig. 1 is a schematic structural diagram of an air source heat pump apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an air source heat pump device according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of an air source heat pump device according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of an air source heat pump device according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of an air source heat pump device according to another embodiment of the present invention;
fig. 6 is a schematic structural diagram of an air source heat pump device according to another embodiment of the present invention;
fig. 7 is a schematic flow chart illustrating refrigerant bypass conduction of a control method of an air source heat pump apparatus according to an embodiment of the present invention;
fig. 8 is another schematic control flow diagram of a control method of an air source heat pump device according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an air source heat pump apparatus according to an embodiment of the present invention.
Reference numerals:
the air conditioner comprises a compressor 110, a water side heat exchanger 120, a water inlet 121, a water outlet 122, a refrigerant radiating pipe 130, a first electronic expansion valve 140, an evaporator 150, a second throttling device 160, a gas-liquid separating device 170, a four-way valve 180, a temperature detecting device 210, a refrigerant bypass flow path 220, a first throttling device 221, a refrigerant inlet 222, a refrigerant outlet 223, a capillary tube 224, a processor 300 and a memory 400.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, greater than, less than, exceeding, etc. are understood as excluding the present numbers, and the above, below, inside, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise expressly limited, the terms set, mounted, connected, and the like are to be construed broadly, e.g., as being fixed or removably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.
Air source energy is an important component of new and renewable energy sources. The air source has huge energy, and is inexhaustible energy. The utilization of air-source energy is not like the conventional energy sources in the earth, and can be completely exhausted after hundreds of years. The air source can be widely distributed and is convenient to obtain. Moreover, the air source does not need to be mined and transported, is safe and sanitary to use, has no pollution to the environment, and is a creditable clean energy source. The air source heat pump is an energy-saving device which utilizes high-level energy to enable heat to flow from low-level heat source air to a high-level heat source, and the working principle of the air source heat pump is that low-level heat energy which cannot be directly utilized (namely heat of air source energy, such as heat contained in air, soil and water) can be converted into high-level heat energy which can be utilized according to the reverse Carnot cycle principle, so that the aim of saving part of high-level energy (such as coal, gas, oil, electric energy and the like) is fulfilled. Therefore, air-source heat pump apparatuses are widely used.
At present, air-cooled variable-frequency electronic control is adopted in air source heat pump equipment, and the trend is toward variable-frequency electronic control heat dissipation through a refrigerant. In the heating mode, the air source heat pump equipment outputs high-temperature and high-pressure gaseous refrigerant through the compressor, exchanges heat with water through the water side heat exchanger to complete heating, and returns to the compressor through the refrigerant radiating pipe, the electronic expansion valve, the evaporator and the like in sequence to form refrigerant circulation. The return water temperature of heat exchanger crosses lowly when the water side, leads to the refrigerant temperature of refrigerant cooling tube to cross lowly easily, when electrical equipment heat transfer such as the frequency conversion module of refrigerant cooling tube and refrigerant cooling tube annex, causes the phenomenon of position emergence condensation such as refrigerant cooling tube and nearby frequency conversion module easily.
Based on the above, the embodiment of the invention provides an air source heat pump device, a control method and a storage medium. The following disclosure provides many different embodiments or examples to illustrate different aspects of the invention.
Referring to fig. 1 to 6, the present invention provides air source heat pump apparatuses according to different embodiments, wherein the air source heat pump apparatus may be an air source heat pump apparatus having only a heating mode, or an air source heat pump apparatus having both a cooling mode and a heating mode.
Referring to fig. 1 to 6, the air source heat pump apparatus includes a refrigerant circulation loop, wherein the refrigerant circulation loop includes a compressor 110, a water side heat exchanger 120, a refrigerant heat dissipation pipe 130, a temperature detection device 210, a refrigerant bypass flow path 220 and a control device; the temperature detection device 210 is used for detecting the temperature of the pipeline; the refrigerant bypass flow path 220 includes a first throttling device 221, a refrigerant inlet 222 connected to an exhaust port of the compressor 110, and a refrigerant outlet 223 positioned between the water-side heat exchanger 120 and the refrigerant heat dissipation pipe 130; the control device is configured to control the first throttling device 221 according to a pipe temperature sent by the temperature detection device 210, where the pipe temperature is used to represent the temperature of the cooling medium heat dissipation pipe.
It should be noted that, referring to the embodiments of fig. 1 to 6, the temperature detecting device 210 may be disposed outside the refrigerant heat dissipation pipe 130. In other embodiments, the temperature detecting device 210 may be disposed in the refrigerant heat dissipating tube 130. In other embodiments, the temperature detecting device 210 may be disposed between the refrigerant outlet 223 and the refrigerant heat dissipation pipe 130, for example, in the embodiment of fig. 2, the temperature detecting device 210 is disposed at the output end of the second throttling device 160.
It should be noted that the refrigerant circulation loop further includes a first electronic expansion valve 140 and an evaporator 150, the first electronic expansion valve 140 is disposed between the refrigerant heat dissipation pipe 130 and the evaporator 150, and the first electronic expansion valve 140 is used for converting a high-pressure refrigerant into a low-pressure refrigerant; the evaporator 150 is disposed between the compressor 110 and the refrigerant heat dissipation pipe 130, and processes the refrigerant through the compressor 110, the water side heat exchanger 120, the refrigerant heat dissipation pipe 130, the first electronic expansion valve 140, and the evaporator 150 to complete a heating process of the air source heat pump device. The evaporator 150 may be a fin heat exchanger or a plate heat exchanger.
When the heating mode is activated, reference is made to the air-source heat pump apparatus shown in figures 1 to 6; the compressor 110 delivers the high-temperature and high-pressure gaseous refrigerant to the water-side heat exchanger 120 to perform heat exchange, and outputs a low-temperature and high-pressure liquid refrigerant. In the process of returning the low-temperature and high-pressure liquid refrigerant, the high-pressure liquid refrigerant is changed into a low-pressure liquid refrigerant by the first electronic expansion valve 140, and is gasified by the evaporator 150 to absorb heat and then enters the compressor 110 to complete a heating process. In the heating process, the control device receives the pipeline temperature sent by the temperature detection device 210 in real time, and controls the first throttling device 221 according to the difference between the pipeline temperature and the ambient temperature to conduct the refrigerant bypass flow path 220, so that the refrigerant of the water side heat exchanger 120 and the refrigerant output from the refrigerant outlet 223 are mixed and then input into the refrigerant radiating pipe 130, and further the pipeline temperature of the refrigerant radiating pipe 130 is increased, therefore, the condensation probability can be reduced in the embodiment.
It can be understood that, referring to the embodiment of fig. 1 to 4, the first throttling device 221 may be an electromagnetic valve, a capillary tube 224 is disposed between the electromagnetic valve and the refrigerant outlet 223, and the control device conducts the electromagnetic valve and further conducts the refrigerant bypass flow path 220 when the pipeline temperature is lower than the ambient temperature. At this time, the high-temperature and high-pressure refrigerant output from the discharge port of the compressor 110 enters the refrigerant heat dissipation tube 130, thereby increasing the temperature of the refrigerant heat dissipation tube 130.
It can be understood that, referring to the embodiments of fig. 1 to 4, the control device may close the electromagnetic valve when the pipe temperature is greater than the first temperature threshold value, so as to ensure that the temperature around the coolant radiating pipe 130 is not too high, thereby protecting components around the coolant radiating pipe 130.
It should be noted that the first temperature threshold is greater than the condensation temperature. Wherein the first temperature threshold may be set to a minimum value between the first temperature and the second temperature, i.e. when the first temperature is greater than the second temperature, the first temperature threshold is equal to the second temperature; or when the first temperature is less than the second temperature, the first temperature threshold is equal to the first temperature. In some embodiments, the first temperature is a maximum temperature that the device can withstand, the second temperature is a temperature set based on an ambient temperature, and the second temperature is greater than the ambient temperature.
It can be understood that, referring to the embodiment of fig. 5 and 6, the first throttling device 221 may be an electronic expansion valve, and when the control device detects that the pipe temperature is lower than the ambient temperature, the control device adjusts the opening degree of the electronic expansion valve according to the temperature difference between the pipe temperature and the ambient temperature every first time interval, and the refrigerant bypass flow path 220 is conducted by adjusting the opening degree of the electronic expansion valve. The high-temperature and high-pressure refrigerant discharged from the discharge port of the compressor 110 is discharged from the refrigerant outlet 223 and mixed with the refrigerant discharged from the water side heat exchanger 120, thereby increasing the temperature of the refrigerant heat dissipation pipe.
It should be noted that the opening degree of the electronic expansion valve can be adjusted by the opening degree step number, and the opening degree step number can be adjusted by the temperature difference between the ambient temperature and the pipe temperature of the refrigerant heat dissipation pipe 130 (Δ T ═ T)4-Tr，T4Indicating the ambient temperature, TrRepresenting the pipe temperature) is multiplied by a coefficient for controlling the adjustment direction of the electronic expansion valve, e.g. when the ambient temperature is lower than the pipe temperature, the coefficient is negative, and the opening degree of the electronic expansion valve is gradually decreased according to the opening degree step number. For another example, when the ambient temperature is higher than the line temperature, the coefficient is a positive value, and the opening degree of the electronic expansion valve is gradually increased according to the opening degree step number. It should be noted that, every first time interval, the opening step number of the electronic expansion valve is recalculated, and the control device gradually adjusts the opening degree of the electronic expansion valve according to the calculated opening step number.
It will be appreciated that with reference to the air source heat pump apparatus shown in fig. 1 to 6, when it is detected that the temperature of the circuit is less than ambient temperature and the duration exceeds the first time threshold, the control means stops the operation of the compressor 110 and continues to stop for a second period of time.
Note that the second period of time may be set to 3min or more. For example, the second time period may be set to 3min, and in other embodiments, the second time period may be set to 5 min.
It should be noted that, when the detection device detects that the ambient temperature is higher than the pipeline temperature and exceeds the first time threshold, it indicates that the high-temperature refrigerant output by the refrigerant bypass flow path 220 is not enough to raise the pipeline temperature of the refrigerant heat dissipation tube 130, at this time, the pipeline temperature of the refrigerant heat dissipation tube 130 is still lower than the ambient temperature, and there is a condensation condition, therefore, the compressor 110 needs to be stopped to ensure that the water side heat exchanger 120 does not output the refrigerant with a lower temperature to the refrigerant heat dissipation tube 130 any more, at this time, the refrigerant heat dissipation tube 130 exchanges heat with the outdoor environment and the refrigerant bypass flow path 220, and gradually returns to the temperature.
It can be understood that, after the compressor 110 stops operating for the second time period, when the control device detects that the pipe temperature of the refrigerant heat dissipation pipe 130 is greater than or equal to the second temperature threshold and the duration time exceeds the second time threshold, the compressor 110 is turned on.
It should be noted that the refrigerant bypass flow path 220 is kept in a conducting state during the second time period, so as to exchange heat with the refrigerant bypass flow path 220 to raise the pipe temperature of the refrigerant heat dissipation pipe 130; meanwhile, after the compressor 110 is restarted, the conduction state of the refrigerant bypass flow path 220 is determined again according to the detected pipeline temperature, and the operation times of the refrigerant bypass flow path 220 are reduced.
It is noted that the second temperature threshold may be a temperature greater than or equal to the ambient temperature. The second time threshold may be set manually as required, for example 1min, for example 2min again.
It should be noted that, for the air source heat pump apparatus of the present embodiment, the type of the water side heat exchanger 120 is not limited, and the position of the refrigerant outlet 223 is not limited, wherein the refrigerant outlet 223 may be disposed at any node of the pipe between the water side heat exchanger 120 and the refrigerant heat dissipation pipe 130. In addition, a second throttling device 160 may be disposed between the refrigerant heat dissipation pipe 130 and the water side heat exchanger 120, and in this case, the arrangement of the refrigerant bypass flow path 220 and the arrangement of the water side heat exchanger 120 may refer to the following:
for example, referring to fig. 1, the water side heat exchanger 120 may be a water-refrigerant heat exchanger, and the refrigerant outlet 223 is disposed between the second throttling device 160 and the refrigerant heat dissipation pipe 130, in this case, the refrigerant output by the refrigerant bypass flow path 220 is mixed with the refrigerant output by the water side heat exchanger 120 after the second throttling device 160; the first throttling device 221 is an electromagnetic valve.
For example, referring to fig. 2, the water-side heat exchanger 120 may be a water-refrigerant heat exchanger, and the refrigerant outlet 223 is disposed between the second throttling device 160 and the water-refrigerant heat exchanger, at this time, the refrigerant output by the refrigerant bypass flow path 220 is mixed with the refrigerant output by the water-side heat exchanger 120, throttled by the second throttling device 160, and input to the refrigerant radiating pipe 130; the first throttling device 221 is an electromagnetic valve.
For example, referring to fig. 3, the water side heat exchanger 120 may be a hot water tank, and the refrigerant outlet 223 is disposed between the second throttling device 160 and the refrigerant heat dissipation pipe 130, wherein the first throttling device 221 is a solenoid valve.
For example, referring to fig. 4, the water-side heat exchanger 120 may be a hot water tank, and the refrigerant outlet 223 is disposed between the second throttling device 160 and the hot water tank, wherein the first throttling device 221 is an electromagnetic valve.
For example, referring to fig. 5, the water side heat exchanger 120 may be a water-refrigerant heat exchanger, and the refrigerant outlet 223 is disposed between the second throttling device 160 and the refrigerant heat dissipation pipe 130, wherein the first throttling device 221 is an electronic expansion valve.
For example, referring to fig. 6, the water side heat exchanger 120 may be a hot water tank, and the refrigerant outlet 223 is disposed between the second throttling device 160 and the refrigerant heat dissipation pipe 130, wherein the first throttling device 221 is an electronic expansion valve.
The refrigerant bypass passage 220 shown in fig. 5 and 6 may have a refrigerant outlet 223 provided between the second expansion device 160 and the water side heat exchanger 120. For example, the water side heat exchanger 120 is a hot water tank, and the refrigerant outlet 223 is disposed between the second throttling device 160 and the hot water tank; for another example, the water-side heat exchanger 120 is a water-refrigerant heat exchanger, and the refrigerant outlet 223 is provided between the second expansion device 160 and the water-refrigerant heat exchanger.
Referring to the embodiment shown in fig. 1 to 6, the refrigerant circulation circuit further includes a gas-liquid separator 170 and a four-way valve 180. Four ports of the four-way valve 180 are respectively connected to the compressor 110, an inlet of the gas-liquid separation device 170, an output port of the evaporator 150, and a refrigerant input port of the water-side heat exchanger 120; the outlet of the gas-liquid separation device 170 is connected to the compressor 110. When the heating mode is started, the compressor 110 outputs a high-temperature and high-pressure refrigerant to the water-side heat exchanger 120 through the four-way valve 180, cold water is continuously input into the water inlet 121 of the water-side heat exchanger 120 to exchange heat with the high-temperature and high-pressure refrigerant, and at this time, hot water is output from the water outlet 122. When the refrigerant is output from the water side heat exchanger 120, the refrigerant is changed into a low-temperature liquid refrigerant. Since the refrigerant outlet 223 is disposed between the refrigerant heat dissipating tube 130 and the water side heat exchanger 120, the low temperature liquid refrigerant is mixed with the high temperature gaseous refrigerant at the refrigerant outlet 223 of the refrigerant bypass flow path 220 and enters the refrigerant heat dissipating tube 130, and the refrigerant output from the refrigerant heat dissipating tube 130 sequentially passes through the first electronic expansion valve 140 and the evaporator 150 and returns to the compressor 110 through the four-way valve 180.
In addition, referring to fig. 7, a control method of the air source heat pump apparatus according to the embodiment of the present invention is further described. The control method is applied to the air-source heat pump apparatus shown previously. The control method comprises the following steps:
step S100, the pipe temperature of the refrigerant heat dissipation pipe 130 detected by the temperature detection device 210 is obtained.
Referring to the air source heat pump apparatus shown in fig. 1 to 6, the temperature detecting device 210 is disposed on the refrigerant heat dissipation tube 130, and is configured to detect the pipe temperature of the refrigerant heat dissipation tube 130 in real time and send the pipe temperature to the control device. At this time, the control device receives the pipe temperature transmitted from the temperature detection device 210.
Step S200, the first throttling device 221 is controlled to conduct the refrigerant bypass flow path 220 according to the pipeline temperature, and the temperature of the refrigerant heat dissipation pipe 130 is adjusted through the refrigerant output by the refrigerant bypass flow path 220.
It should be noted that, referring to the air source heat pump apparatus in the embodiment shown in fig. 1 to 6, the refrigerant bypass flow path 220 is connected to the exhaust port of the compressor 110, when the first throttling device 221 conducts the refrigerant bypass flow path 220, the refrigerant bypass flow path 220 outputs the high-temperature refrigerant output from the exhaust port of the compressor 110, and since the refrigerant outlet 223 is disposed between the water side heat exchanger 120 and the refrigerant heat dissipation pipe 130, for example, as shown in the embodiment of fig. 1, the low-temperature refrigerant output from the water side heat exchanger 120 passes through the second throttling device 160, and then is mixed with the high-temperature refrigerant output from the refrigerant bypass flow path 220, and enters the refrigerant heat dissipation pipe 130 together, and since the temperature of the mixed refrigerant is higher than that of the refrigerant output from the water side heat exchanger 120, the probability of condensation is reduced.
Therefore, according to the control method of the embodiment of the application, after the heating mode is started, the compressor 110 outputs the high-temperature gaseous refrigerant to the water-side heat exchanger 120, and the high-temperature gaseous refrigerant exchanges heat with the cold water of the water-side heat exchanger 120 to be changed into the low-temperature liquid refrigerant and is output. When the low-temperature liquid refrigerant passes through the refrigerant heat dissipation tube 130, the first electronic expansion valve 140, and the evaporator 150 to return to the compressor 110, the temperature detection device 210 detects the temperature of the pipeline of the refrigerant heat dissipation tube 130 at the same time, and sends the temperature of the pipeline to the control device, the control device controls the first throttling device 221 to conduct the refrigerant bypass flow path 220 according to the temperature of the pipeline, so that the high-temperature gaseous refrigerant output from the exhaust port of the compressor 110 is output through the refrigerant bypass flow path 220 and mixed with the low-temperature refrigerant output from the water side heat exchanger 120, thereby increasing the temperature of the refrigerant entering the refrigerant heat dissipation tube 130, reducing the temperature difference between the temperature of the pipeline of the refrigerant heat dissipation tube 130 and the ambient temperature, and further reducing the probability of condensation.
It can be understood that, referring to fig. 1 to 4 and fig. 7, the first throttling device 221 may be an electromagnetic valve, and the step S200 includes: when the temperature of the pipeline is detected to be lower than the ambient temperature, the solenoid valve is turned on, and the temperature in the refrigerant heat dissipation pipe 130 is adjusted through the refrigerant output by the refrigerant bypass flow path 220.
Since the refrigerant inlet of the refrigerant bypass flow path 220 is connected to the discharge port of the compressor 110, the temperature of the refrigerant output from the refrigerant bypass flow path 220 is high. When the pipeline temperature is lower than the ambient temperature, it indicates that there is a risk of condensation, and therefore the solenoid valve is turned on, so that the high-temperature refrigerant is mixed with the low-temperature refrigerant output by the water side heat exchanger 120 through the refrigerant bypass flow path 220, and further the temperature of the refrigerant entering the refrigerant heat dissipation tube 130 is raised, and further the condensation probability of the refrigerant heat dissipation tube 130 is reduced. When the refrigerant radiating pipe 130 exchanges heat with other electrical equipment such as a frequency conversion module of an accessory, the condensation probability of other electrical equipment near the refrigerant radiating pipe 130 can be reduced.
It can be understood that, referring to the embodiment of fig. 1 to 4 and referring to fig. 8, after the electromagnetic valve is turned on, the control method further includes:
and step S300, when the detected pipeline temperature is greater than a first temperature threshold value, closing the electromagnetic valve.
It should be noted that the first temperature threshold is greater than the condensation temperature. When the pipeline temperature is greater than the first temperature threshold, there is no risk of condensation, if the refrigerant bypass flow path 220 is continuously conducted, there is a risk of higher temperature in the pipeline temperature of the refrigerant heat dissipation pipe 130, and the electrical equipment attached to the refrigerant heat dissipation pipe 130 is in a high-temperature operation environment and is easily damaged.
It should be noted that the first temperature threshold may be set to a minimum value between the first temperature and the second temperature, that is, when the first temperature is greater than the second temperature, the first temperature threshold is equal to the second temperature; when the first temperature is lower than or equal to the second temperature, the first temperature threshold value is equal to the first temperature. In some embodiments, the first temperature is the highest temperature that the device can withstand, and the second temperature is a temperature set based on the ambient temperature; and the second temperature is greater than ambient temperature.
It is understood that, referring to the embodiments shown in fig. 5, fig. 6 and fig. 7, the first throttling device 221 may be an electronic expansion valve, and the step S200 includes: when the temperature of the pipeline is lower than the ambient temperature, the opening degree of the electronic expansion valve is adjusted according to the temperature difference between the temperature of the pipeline and the ambient temperature at intervals of a first time length.
The opening degree of the electronic expansion valve may be adjusted by an opening degree step number, which may be adjusted by a temperature difference between the ambient temperature and the pipe temperature of the refrigerant heat dissipation pipe 130 (Δ T ═ T)4-Tr，T4Indicating the ambient temperature, TrIndicating the pipe temperature) is multiplied by a coefficient for controlling the adjustment direction of the electronic expansion valve, for example, when the ambient temperature is lower than the pipe temperature, the coefficient is a negative value, and the opening degree of the electronic expansion valve is gradually decreased according to the opening degree step number, thereby shutting off the refrigerant bypass flow path 220.
It should be noted that, in some embodiments, the adjustment range of the opening step number of the electronic expansion valve is 0 to 480. The first time period can be set according to the rule of temperature rise change of the historical pipeline or a fixed value according to experience. For example, the first time period is fixedly set to 1 min.
It can be understood that, referring to fig. 8, the control method further includes:
step S400, when it is detected that the pipeline temperature is less than the ambient temperature and the duration exceeds the first time threshold, the compressor 110 is stopped and stopped for a second duration.
Note that the second period of time may be set to 3min or more. For example, the second time period may be set to 3min, and in other embodiments, the second time period may be set to 5 min.
It should be noted that, with reference to the embodiment shown in fig. 1 to 4, the compressor 110 is controlled to stop operating for a second time period through step S400 before the pipeline temperature reaches a first temperature threshold value, wherein the first temperature threshold value is greater than the ambient temperature.
It should be noted that, with reference to the embodiment shown in fig. 5 and 6, the duration of the first time threshold should be greater than the first duration of the electronic expansion valve adjustment. When the electronic expansion valve is in the on state and continues for the first time threshold, the temperature of the pipeline is still lower than the ambient temperature, which indicates that the temperature of the mixed refrigerant output by the refrigerant bypass flow path 220 and the refrigerant output by the water side heat exchanger 120 is lower, and when the mixed refrigerant is input into the refrigerant radiating pipe 130, condensation exists. Therefore, the compressor 110 is stopped, and the refrigerant bypass path 220 is kept in a conductive state, so that the temperature of the refrigerant heat dissipation pipe 130 is raised first, and then heating is performed.
It can be understood that, referring to fig. 8, after the compressor operation is stopped for the second time period in step S400, the control method further includes:
step S500, when it is detected that the pipeline temperature is greater than or equal to the second temperature threshold and the duration exceeds the second time threshold, the operation of the compressor 110 is started.
The second temperature threshold is a preset threshold value which is greater than or equal to the ambient temperature; the first temperature threshold is different from the second temperature threshold.
In a third aspect, referring to fig. 9, an embodiment of the present invention further provides an air-air source heat pump apparatus, including: memory 400, processor 300, and a computer program stored on memory 400 and executable on processor 300. In some embodiments, the processor 300 executes the control methods shown in steps S100 and S200, and in the heating mode, the first throttling device 221 outputs the high-temperature gaseous refrigerant output from the air outlet of the compressor 110 from the refrigerant outlet of the refrigerant bypass flow path 220 to be mixed with the low-temperature refrigerant output from the water side heat exchanger 120, so as to increase the temperature of the refrigerant heat dissipation pipe, reduce the temperature difference between the pipe temperature of the refrigerant heat dissipation pipe and the ambient temperature, and further reduce the probability of condensation. In other embodiments, the processor 300 executes the control method shown in steps S100 to S500, and after controlling the first throttling device 221 to conduct the refrigerant bypass path 220, the pipeline temperature is detected in real time, and the first throttling device 221 is controlled to disconnect the refrigerant bypass path 220 or stop the operation of the compressor 110, so as to ensure that the pipeline temperature of the refrigerant heat dissipation tube 130 is not too high or continuously too low. In other embodiments, the processor 300 performs the steps S100, S200, and S200 corresponding to the steps shown when the first throttling device 221 is set as an electromagnetic valve or an electronic expansion valve, for example, when the first throttling device 221 is set as an electromagnetic valve, the processor 300 determines that the pipe temperature is less than the ambient temperature, turns on the electromagnetic valve, and adjusts the temperature in the refrigerant heat dissipation pipe 130 through the refrigerant output from the refrigerant bypass flow path 220; for example, when the first throttling device 221 is an electronic expansion valve, the processor 300 determines that the pipe temperature is less than the ambient temperature, and the processor 300 adjusts the opening degree of the electronic expansion valve according to the temperature difference between the pipe temperature and the ambient temperature every first time period.
It will be appreciated by those skilled in the art that the arrangement shown in figure 9 does not constitute a limitation of the air-to-air source heat pump apparatus and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
In a fourth aspect of the present invention, a computer-readable storage medium is provided, which stores computer-executable instructions, which are executed by one or more control processors 300, for example, by one processor 300 in fig. 9, and enable the one or more processors 300 to execute the control method of the air source heat pump system in the second aspect, for example, the processor 300 processes the control method shown by step S100 and step S200, in a heating mode, the refrigerant bypass flow path 220 is conducted through the first throttling device 221, the high-temperature gaseous refrigerant output from the exhaust port of the compressor 110 is output from the refrigerant outlet of the refrigerant bypass flow path 220 and mixed with the low-temperature refrigerant output from the water side heat exchanger 120, and at this time, the temperature difference between the pipeline temperature of the refrigerant radiating pipe and the ambient temperature is reduced, thereby reducing the probability of condensation. For another example, after the processor 300 controls the first throttling device 221 to conduct the refrigerant bypass flow path 220 by executing the control methods shown in steps S100 to S500, after the processor 300 receives the detected pipe temperature in real time, the processor controls the first throttling device 221 to disconnect the refrigerant bypass flow path 220 according to the pipe temperature, or the refrigerant bypass flow path 220 stops the compressor 110 from operating for a second time period, so as to ensure that the pipe temperature of the refrigerant heat dissipation pipe 130 is not continuously too high or continuously too low. For another example, referring to the embodiment shown in fig. 1 to 4, the processor 300 determines that the pipe temperature is less than the ambient temperature, and controls the electromagnetic valve to conduct the refrigerant bypass flow path 220, so as to adjust the temperature in the refrigerant heat dissipation pipe 130 through the refrigerant output by the refrigerant bypass flow path 220; for example, referring to the embodiment shown in fig. 5 and 6, the processor 300 determines that the pipe temperature is less than the ambient temperature, and the processor 300 recalculates the opening step number of the electronic expansion valve to adjust the opening degree of the electronic expansion valve according to the temperature difference between the pipe temperature and the ambient temperature every interval of the first time period. The above-described embodiments of the apparatus are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may also be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
It should be noted that the embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the embodiments of the present invention are not limited to the above-mentioned embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the embodiments of the present invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "specifically," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (14)
1. Air source heat pump equipment, including refrigerant circulation circuit, refrigerant circulation circuit includes compressor, water side heat exchanger and refrigerant cooling tube, its characterized in that, refrigerant circulation circuit still includes:
the temperature detection device is used for detecting the temperature of a pipeline, and the temperature of the pipeline is used for representing the temperature of the refrigerant radiating pipe;
the refrigerant bypass flow path comprises a first throttling device, a refrigerant inlet and a refrigerant outlet, the refrigerant inlet is connected with an exhaust port of the compressor, and the refrigerant outlet is positioned between the water side heat exchanger and the refrigerant radiating pipe;
and the control device is used for controlling the first throttling device according to the temperature of the pipeline and adjusting the temperature of the refrigerant radiating pipe by using the refrigerant output by the compressor.
2. The air-source heat pump apparatus of claim 1, wherein the first throttling device is a solenoid valve, and the control device is specifically configured to:
and responding to the condition that the temperature of the pipeline is less than the ambient temperature, controlling the electromagnetic valve to be conducted, and utilizing the refrigerant output by the compressor to improve the temperature of the refrigerant radiating pipe.
3. The air-source heat pump apparatus according to claim 2, wherein after the control device controls the electromagnetic valve to be turned on, the control device is further configured to:
closing the solenoid valve in response to the line temperature being greater than a first temperature threshold, wherein the first temperature threshold is greater than a dew condensation temperature.
4. The air-source heat pump apparatus of claim 1, wherein the first throttling device is an electronic expansion valve, and the control device is specifically configured to:
and responding to the condition that the temperature of the pipeline is less than the ambient temperature, adjusting the opening degree of the electronic expansion valve at intervals of a first time interval according to the temperature of the pipeline and the ambient temperature, and increasing the temperature of the refrigerant radiating pipe by using the refrigerant output by the compressor.
5. The air-source heat pump apparatus of claim 2 or 4, wherein the control device is further configured to:
and controlling the compressor to stop running for a second time period in response to the time that the pipeline temperature is lower than the ambient temperature exceeding a first time threshold.
6. The air-source heat pump apparatus of claim 5, wherein after the compressor is stopped for the second period of time, the control device is further configured to:
and controlling the compressor to start running in response to the time that the pipeline temperature is greater than or equal to a second temperature threshold value and exceeds a second time threshold value.
7. The control method of the air source heat pump equipment comprises a refrigerant circulation loop, wherein the refrigerant circulation loop comprises a compressor, a water side heat exchanger and a refrigerant radiating pipe; the refrigerant bypass flow path comprises a first throttling device, a refrigerant inlet and a refrigerant outlet, the refrigerant inlet is connected with an exhaust port of the compressor, and the refrigerant outlet is positioned between the water side heat exchanger and the refrigerant radiating pipe;
the control method comprises the following steps:
acquiring the pipeline temperature of the refrigerant radiating pipe sent by the temperature detection device;
and controlling the first throttling device according to the temperature of the pipeline, and adjusting the temperature of the refrigerant radiating pipe by using the refrigerant output by the compressor.
8. The control method of an air-source heat pump apparatus according to claim 7, wherein the first throttling device is a solenoid valve;
the controlling the first throttling device according to the pipeline temperature and adjusting the temperature of the refrigerant radiating pipe by using the refrigerant output by the compressor comprises the following steps:
when the temperature of the pipeline is lower than the ambient temperature, the electromagnetic valve is controlled to be conducted, and the temperature of the refrigerant radiating pipe is increased by using the refrigerant output by the compressor.
9. The control method of an air-source heat pump apparatus according to claim 8, characterized in that after said controlling said solenoid valve to be turned on, said control method further comprises:
and when the temperature of the pipeline is greater than a first temperature threshold value, closing the electromagnetic valve, wherein the first temperature threshold value is greater than the condensation temperature.
10. The control method of an air-source heat pump apparatus according to claim 7, wherein the first throttle device is an electronic expansion valve;
the controlling the first throttling device according to the pipeline temperature and adjusting the temperature of the refrigerant radiating pipe by using the refrigerant output by the compressor comprises the following steps:
when the temperature of the pipeline is lower than the ambient temperature, the opening degree of the electronic expansion valve is adjusted at intervals of a first time interval according to the temperature of the pipeline and the ambient temperature, and the temperature of the refrigerant radiating pipe is increased by using the refrigerant output by the compressor.
11. The control method of an air-source heat pump apparatus according to claim 8 or 10, characterized by further comprising:
and when the time that the pipeline temperature is lower than the ambient temperature exceeds a first time threshold, controlling the compressor to stop running for a second time.
12. The control method of an air-source heat pump apparatus according to claim 11, wherein after said controlling the compressor to stop operating for a second period of time, the control method further comprises:
and when the time that the pipeline temperature is greater than or equal to the second temperature threshold exceeds a second time threshold, controlling the compressor to start to operate.
13. An air-source heat pump apparatus comprising: memory, processor and computer program stored on the memory and executable on the processor, characterized in that the processor implements the control method according to any one of claims 7 to 12 when executing the computer program.
14. A computer-readable storage medium storing computer-executable instructions for causing a computer to perform the control method according to any one of claims 7 to 12.
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