CN110645730A - Refrigerant control system and method for double-end heat pump heating air conditioning unit - Google Patents
Refrigerant control system and method for double-end heat pump heating air conditioning unit Download PDFInfo
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- CN110645730A CN110645730A CN201910929683.1A CN201910929683A CN110645730A CN 110645730 A CN110645730 A CN 110645730A CN 201910929683 A CN201910929683 A CN 201910929683A CN 110645730 A CN110645730 A CN 110645730A
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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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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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
- 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
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- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a refrigerant control system and a method of a double-end heat pump heating air-conditioning unit, wherein the heat pump heating air-conditioning unit comprises an air-conditioning outdoor unit and an indoor heat exchange unit, the refrigerant control system comprises a control device, a fluorine path switching device and a remote control device, the control device controls the fluorine path switching device through a working mode set by the remote control device to realize the switching of the refrigerant flow direction between double-end equipment, therefore, multi-mode heating such as cooling by an air conditioner indoor unit in summer, heating by a heating plate, combined heating and the like by the air conditioner indoor unit in winter is realized; the invention adds the heat exchange tail end of the air energy radiator in the heat pump heating air-conditioning system, overcomes the problems of indoor air drying and blowing sense during air-conditioning heating, the indoor heating system has the advantages of ensuring higher indoor thermal comfort, reducing the complexity of the heating system, being convenient to use, being not limited by regions and having wide application prospect.
Description
Technical Field
The invention relates to the technical field of novel heating, in particular to a refrigerant control system and method of a double-end heat pump heating air conditioning unit.
Background
With the continuous development of the social and economic level of China, the requirement of people on the indoor environmental comfort in winter is continuously improved, and a plurality of heating modes, such as central heating, air-conditioning heating, air source heat pump heating, wall-mounted furnace heating, electric heating and the like, are developed. In northern areas of China, central heating is mostly adopted, but in rural areas, mountain areas and southern areas, an independent heating system is mostly adopted due to dispersed houses, regional limitation or no central heat source and the like.
The heat pump can be widely applied because the heat pump can refrigerate in summer and heat in winter, is efficient and energy-saving, but dry hot air blown out by the heat pump air conditioner can often feel uncomfortable when heating in winter, and researches show that a heating mode with higher comfort is also radiation heating; although the central heating has no blowing sense and can ensure the heating effect, the installation of the traditional heating plate not only needs a large amount of pipeline laying and reconstruction, but also needs a central heat source, has complex installation and higher initial investment cost, and is not suitable for areas which are not heated collectively; independent heating systems also have problems, such as low heat production efficiency and high cost of wall-mounted furnaces or electric heating.
In view of the foregoing, there is a need for an improved heat pump air conditioning system that provides comfortable heating in winter and does not affect cooling in summer.
Disclosure of Invention
The invention provides a refrigerant control system and method of a double-end heat pump heating air conditioning unit, which are used for solving the problems of dry hot air, complex system, poor stability and the like in the heat supply of the conventional heat pump air conditioner and improving the comfort of heating in winter.
In order to achieve the purpose, a novel air energy radiator is connected into a heat pump air conditioning system, and the switching between the cooling of a fan coil pipe in summer and the heating of a radiator in winter is achieved through a refrigerant control system. The specific technical scheme is as follows:
the invention provides a double-end heat pump heating air-conditioning unit with a refrigerant control system, which comprises an air-conditioning outdoor unit and an indoor heat exchange unit, wherein the air-conditioning outdoor unit comprises an air-conditioning indoor unit and two ends of an air energy radiator; when the indoor air conditioner is required to work, the indoor air conditioner and the outdoor air conditioner form a complete air conditioner loop through refrigerant pipelines, and the refrigerant flows along the air conditioner loop under the action of the control system to complete circulation; when the heating of the heating radiators is needed, the air conditioner outdoor unit and the air energy heating radiators form a complete heating system through refrigerant pipelines, and the refrigerant flows along the heating radiator loop under the action of the control system to complete circulation.
The refrigerant control system of the double-end heat pump heating air-conditioning unit comprises a control device, a fluorine path switching device and a remote control device; the control device comprises a temperature acquisition module, an acquisition module and a control module, and the remote control device comprises a remote controller and an APP (application) and is used for respectively carrying out on-line and off-line working modes and setting control on target temperature; the control system sets up corresponding control mode through carrying out real-time supervision to indoor temperature and temperature in the radiator in the combination of monitoring temperature and current mode and target temperature to control fluorine way auto-change over device and carry out the refrigerant flow direction and switch, the refrigerant passes through the air conditioner loop and accomplishes the circulation when needing the work of air conditioner internal unit, controls the refrigerant and accomplishes the circulation through the radiator loop when using the radiator.
The control device further comprises a temperature acquisition module, an acquisition module and a control module; the temperature acquisition module monitors the indoor air temperature and the water temperature in the radiator in real time through the temperature sensor and uploads data, and meanwhile, the real-time monitored temperature, the acquired working mode and the target temperature are displayed on the display screen; the acquisition module is used for acquiring a current working mode set by the remote control device and a target temperature in the current working mode; and the control module determines a control mode according to the working mode, the target temperature and the real-time monitoring data and controls the fluorine path switching device.
The fluorine path switching device comprises a four-way reversing valve, a three-way valve and a check valve; the four-way reversing valve is arranged on a gas outlet pipeline of the compressor, and realizes the refrigeration and heating of the air conditioning system by controlling the flow direction of a refrigerant entering and exiting the compressor, the four-way reversing valve controls the refrigerant coming out of the compressor to firstly exchange heat with the outdoor unit during the refrigeration, and controls the compressed refrigerant to firstly flow to the indoor heat exchange unit during the heating; the three-way valve is arranged behind the four-way valve, and the switching of the flow direction of the refrigerant is completed through the on-off of the control circuit; when the three-way valve is powered off, the refrigerant flows to the air-conditioning loop, and when the three-way valve is powered on, the refrigerant flows to the radiator loop; the check valve is arranged at the inlet and outlet of the coolant of the radiator loop behind the three-way valve.
The remote control device further comprises a remote controller and an APP (application), the settable working modes comprise four modes of refrigeration, heating by a heating radiator and combined heating, the four modes can be manually switched, the heating tail end can be manually switched during heating, the combined heating mode can also be used for automatic control, different modes correspond to different target temperatures and temperature setting ranges, the target temperature is the water temperature in the heating radiator during heating by the heating radiator, and the temperature range is 35 ~ 50 ℃.
Further, the present invention provides a method for controlling the refrigerant control system, including: monitoring indoor air temperature and water temperature in a radiator, acquiring target temperatures of a current working mode and the current working mode, and formulating corresponding control modes according to different working modes; the working modes of the refrigerant control system are four modes of air conditioner refrigeration, air conditioner heating, radiator heating and combined heating, and the specific control method comprises the following steps:
(1) when the working mode is set to be refrigeration or heating, the flow direction of a refrigerant is switched by controlling a four-way reversing valve in the fluorine path switching device, so that the indoor unit and the outdoor unit of the air conditioner are refrigerated or heated, meanwhile, the three-way valve is controlled to be in a power-off state, the refrigerant pipeline between the outdoor unit of the air conditioner and the indoor unit is communicated, and the refrigerant flows to the indoor unit of the air conditioner and completes circulation along an air conditioning loop; when the monitored indoor temperature is higher than the target temperature, the compressor stops working or works at a low frequency, and when the indoor temperature is lower than the target temperature, the compressor works normally again;
(2) when the working mode is set for heating of the heating radiators, the four-way reversing valve is controlled to enable the air-conditioning outdoor unit to heat, meanwhile, the three-way valve is controlled to be in a power-on state, at the moment, the air energy heating radiators are communicated with a refrigerant pipeline between the air-conditioning outdoor unit, and the refrigerant flows to the air energy heating radiators and completes circulation along a heating radiator loop; when the water temperature in the heater is monitored to be higher than the target temperature, the compressor stops working or works at a low frequency, and when the water temperature is lower than the target temperature, the compressor works normally again;
(3) when the working mode is set as combined heating, indoor air is quickly heated by an indoor unit of the air conditioner, and then indoor temperature is maintained by the air energy heating radiator; in the mode, the outdoor unit continuously heats, the three-way valve is in a power-off state firstly, so that the refrigerant flows to the indoor unit of the air conditioner to quickly heat the indoor air, and when the temperature of the indoor air is monitored to reach the preset temperature, the three-way valve is controlled to be electrified so that the refrigerant is switched to flow to the air energy radiator to heat the indoor air in a radiation heating mode; when the water temperature in the heater is monitored to be higher than the target temperature, the compressor stops working or works at a low frequency, and when the water temperature is lower than the target temperature, the compressor works normally again.
The benefit of the present invention is that,
1) the invention can realize perfect switching between combined heating of the air conditioner and the novel heating radiator in winter and cooling of the fan coil in summer, and reduces the structural complexity of the system for increasing the independent heating system;
2) the problems of indoor air drying and blowing sense during air conditioning heating are solved, and the indoor environment comfort level is improved;
3) the combined heating system of the air conditioner and the heating radiator is applied, the defects of complex installation and high investment cost of the traditional heating radiator are overcome, and the combined heating system is simple, convenient and easy to install and easy to maintain;
4) when refrigerating in summer, the air conditioning system can normally supply cold; when heating in winter, different modes such as air conditioner heating, radiator heating and combined heating can be selected, and the device is suitable for various regions and is not limited by regions.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and specific examples. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of a double-end heat pump heating air-conditioning unit with an air energy radiator according to an embodiment of the invention;
fig. 2 is a schematic view of the main structure of an air energy radiator of the embodiment of the invention;
fig. 3 is a schematic structural diagram of a control device of a refrigerant control system according to an embodiment of the present invention;
fig. 4 is a schematic working diagram of a fluorine path switching device of the refrigerant control system according to the embodiment of the present invention;
fig. 5(a) is a schematic diagram of refrigerant flowing during air-conditioning refrigeration of the refrigerant control system according to the embodiment of the present invention;
fig. 5(b) is a schematic diagram of refrigerant flowing during heating of the refrigerant control system air conditioner according to the embodiment of the present invention;
fig. 5(c) is a schematic diagram of the flow of the refrigerant during heating by the refrigerant control system radiator according to the embodiment of the invention;
fig. 5(d) is a schematic diagram of refrigerant flow in the combined heating of the refrigerant control system according to the embodiment of the present invention;
wherein, 1-air conditioner outdoor unit; 11-outdoor heat exchanger; 12-a compressor; 13-a throttling device; 14-a gas-liquid separator; 15-defrosting electromagnetic valve; 21-check valve, 2-indoor heat exchanger group; 22-indoor air-conditioning unit; 23-air energy radiator; 3-fluorine path switching device; a 31-four-way reversing valve; 32-electric three-way valve; 4-a control device; 41-temperature acquisition module; 42-an acquisition module; 43-a control module; 101-a vacuum device; 102-radiator plugs; 103-a heat exchanger; 104-heating coil; 105-heating pipe interface.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a double-end heat pump heating air conditioning unit, including an air conditioning outdoor unit 1: the outdoor heat exchanger 11, the compressor 12, the throttling device 13, the gas-liquid separator 14, the four-way reversing valve 31, the electric three-way valve 32, the defrosting electromagnetic valve 15, the check valve 21, the indoor heat exchanger unit 2: an air-conditioning indoor unit 22, a control device 4 and an air energy radiator 23; wherein the fluorine path switching device 3 consists of a four-way reversing valve 31, an electric three-way valve 32 and a check valve 21; the air conditioning outdoor unit 1 and the air conditioning indoor unit 22 form an air conditioning loop through a refrigerant pipeline, and the air conditioning outdoor unit 1 and the air energy radiator 23 form a radiator loop through the refrigerant loop.
It should be noted that the radiators provided by the double-end heat pump heating air-conditioning unit provided by the embodiment of the present invention are independently developed air energy radiators, as shown in fig. 2, the radiators are semi-closed type independent radiators with heat exchangers, 101 is a vacuum device, and can control the pressure in the radiators to reduce the liquid vaporization point in the radiators; 102 is a radiator plug, which ensures the water filling and water changing in the radiator; 103 is a heat exchanger of a radiator, a heating coil 104 and a vacuum device 101 are arranged in the radiator, and a space is provided for heat exchange between a refrigerant and water in the radiator; the heating coil 104 is responsible for heat exchange between the refrigerant and water, and the water completes circulating flow under the power of the density and pump after being heated to promote heat exchange; a heating pipe interface 105 is a copper pipe connected to an external refrigerant pipe, and is integrally formed with the heating coil 104.
The working principle of the refrigerant control system of the heat pump heating air conditioning unit is as follows: during heating, low-temperature and low-pressure gaseous refrigerant is pressurized into high-temperature and high-pressure gaseous refrigerant by the compressor 12, enters the indoor unit 22 of the air conditioner or the air energy radiator 23 under the control of the fluorine path switching device 3, exchanges heat with indoor cold air or water in the radiator to release a large amount of heat and then turns into liquid refrigerant, the throttling device 13 decompresses and throttles the liquid refrigerant and then sends the liquid refrigerant into the outdoor heat exchanger 11, and the refrigerant is evaporated, absorbs heat and is gasified and then enters the compressor again to start the next cycle; during refrigeration, low-temperature and low-pressure gaseous refrigerant is pressurized into high-temperature and high-pressure gaseous refrigerant by the compressor 12, enters the outdoor heat exchanger 11 under the control of the fluorine path switching device 3 to be liquefied and release heat to be called liquid refrigerant, is decompressed by the throttling device and then enters the indoor unit 22 of the air conditioner to be evaporated, absorbed, gasified, absorbed indoor air heat to achieve an indoor cooling effect, and the gaseous refrigerant enters the compressor again to start the next cycle.
The embodiment of the invention provides a control device 4 of a refrigerant control system, which has a structural schematic diagram shown in fig. 2 and comprises a temperature acquisition module 41, an acquisition module 42 and a control module 43;
the temperature acquisition module 41 is responsible for monitoring indoor temperature and water temperature in the radiator, uploading data, and displaying the real-time monitored temperature, the acquired working mode and the target temperature on a display screen; the acquisition module 42 is configured to acquire a current working mode set by the remote control device and a target temperature in the current working mode, where the working mode includes four types, namely cooling, heating, radiator heating, and combined heating; and the control module 43 is used for controlling the flow direction of the refrigerant by controlling the four-way reversing valve and the three-way valve after the working mode is determined, so that the indoor unit and the outdoor unit of the air conditioner refrigerates or heats, and simultaneously controlling the refrigerant to flow to an air conditioner loop or a radiator loop.
The embodiment of the invention provides a fluorine path switching device of a refrigerant control system, the working schematic of which refers to fig. 1 and 4, and the switching process of refrigerant flowing lines is as follows:
(1) when the air conditioner indoor unit 9 is required to work, the control device controls the air conditioner indoor unit to be in a power-off state, the valve plate a is connected with the valve plate b of the air conditioner loop at the moment, the refrigerant pipeline between the air conditioner outdoor unit 1 and the air conditioner indoor unit 22 is communicated, and the refrigerant completes circulation along the air conditioner loop;
(2) when the radiator 23 needing air energy works, the control device controls the three-way valve 6 to be in a power-on state, at the moment, the valve sheet a is connected with the valve sheet c of the radiator loop, the air radiator 10 is communicated with a refrigerant pipeline between the air-conditioning outdoor unit 1, and the refrigerant completes circulation along the radiator loop.
(3) When the air-conditioning indoor unit 22 and the air-energy heating radiator 23 are required to jointly supply heat, the control device firstly controls the valve plate a to be connected with the valve plate b, refrigerant flows to the air-conditioning indoor unit to rapidly heat indoor air, when the monitored room temperature reaches a preset temperature, the valve plate a is controlled to be disconnected from the valve plate b and then is connected with the valve plate c, and at the moment, the refrigerant in fluorine roads flows to the water-temperature heating coil in the air heating radiator 10 to exchange heat with water in the radiator and simultaneously heat the indoor air in a radiation heating mode.
As shown in fig. 5(a), 5(b), 5(c), and 5(d), an embodiment of the present invention provides a method for controlling the refrigerant control system, including: monitoring indoor air temperature and water temperature in a radiator, acquiring target temperatures of a current working mode and the current working mode, and refrigerating control modes of refrigerants under different working modes; the working modes of the refrigerant control system are four modes of air conditioner refrigeration, air conditioner heating, radiator heating and combined heating;
the specific control method is described as follows:
(1) the working mode is that the refrigerant flows in the direction shown in fig. 5(a) during refrigeration, at this time, the control device controls the refrigerant flowing out of the compressor 12 to flow to the outdoor heat exchanger 11 by controlling the four-way reversing valve 31, the refrigerant enters the indoor air conditioner 22 after being subjected to pressure reduction by the throttling device 13 after releasing heat and reducing temperature, the refrigerant returns to the compressor 12 through the electric three-way valve 32 after absorbing heat and reducing indoor temperature indoors for next circulation, at this time, the three-way valve 6 is in a power-off state, the refrigerant pipeline between the outdoor air conditioner unit 1 and the indoor air conditioner 22 is communicated, and the; when the monitored indoor temperature is higher than the target temperature, the compressor stops working or works at a low frequency, and when the indoor temperature is lower than the target temperature, the compressor starts working again;
(2) in the working mode, when heating, the refrigerant flows as shown in fig. 5(b), the control device controls the four-way reversing valve 31 to enable the refrigerant coming out of the compressor 12 to flow to the electric three-way valve 32, at the moment, the electric three-way valve 32 is in a power-off state, the refrigerant flows to the indoor air conditioner 22 to release heat indoors and heat indoor air, the refrigerant after temperature reduction is subjected to pressure reduction by the throttling device 13 and then enters the outdoor heat exchanger 11 to exchange heat with outdoor air, absorb heat and evaporate, and then returns to the compressor 12 to perform the next cycle; when the monitored indoor temperature is higher than the target temperature, the compressor stops working or works at a low frequency, and when the indoor temperature is lower than the target temperature, the compressor starts working again;
(3) in the working mode, when the heating radiator heats, the refrigerant flows to the same direction as that in fig. 5(c), the control device controls the four-way reversing valve 31 to enable the refrigerant coming out of the compressor 12 to flow to the electric three-way valve 32, the three electric three-way valve 32 is in the power-on state at the moment, the refrigerant flows to the air energy heating radiator 23 to exchange heat with water in the heating radiator and heat indoor air, the cooled refrigerant is subjected to pressure reduction by the throttling device 13 and then enters the outdoor heat exchanger 11 to exchange heat with outdoor air, and the cooled refrigerant returns to the compressor 12 to perform the next cycle after heat; when the water temperature in the heater is monitored to be higher than the target temperature, the compressor stops working or works at a low frequency, and when the water temperature is lower than the target temperature, the compressor starts working again;
(4) the working mode is that the flow direction of the refrigerant is two as shown in fig. 5(d) when the combined heating is performed, the control device controls four 5 to enable the refrigerant coming out of the compressor 12 to flow to the electric three-way valve 32, the electric three-way valve 32 is in a power-off state firstly, the refrigerant flows to the indoor unit 22 of the air conditioner to rapidly heat the indoor air, when the monitored indoor temperature reaches the preset temperature, the control three-way valve is electrified, the refrigerant flows to the air energy radiator 23, the refrigerant after indoor heat release and temperature reduction is subjected to pressure reduction through the throttling device 13 and then enters the outdoor heat exchanger 11, and the refrigerant returns to the compressor 12 to perform the next cycle after heat exchange and; when the water temperature in the heater is monitored to be higher than the target temperature, the compressor stops working or works at a low frequency, and when the water temperature is lower than the target temperature, the compressor works normally again.
Claims (6)
1. A refrigerant control system and method for a double-end heat pump heating air conditioning unit are characterized in that: the double-end heat pump heating air-conditioning unit comprises an air-conditioning outdoor unit and an indoor heat exchange unit, wherein the indoor heat exchange unit comprises an air-conditioning indoor unit and two heat exchange ends of an air energy radiator, the air-conditioning outdoor unit and the air-conditioning indoor unit form an air-conditioning loop by refrigerant pipelines, and the air-conditioning outdoor unit and the air energy radiator form a radiator loop;
the refrigerant control system of the double-end heat pump heating air-conditioning unit comprises a control device, a fluorine path switching device and a remote control device, the refrigerant control system sets a corresponding control mode according to the monitored temperature and the current working mode and the target temperature by real-time monitoring of indoor temperature and water temperature in an air energy heating radiator, the fluorine path switching device is controlled to switch the refrigerant flow direction, when the air energy heating radiator works, a refrigerant flows through an air-conditioning loop to complete circulation, and when a heating radiator is used, the refrigerant is controlled to complete circulation through the heating radiator loop.
2. The double-end heat pump heating air conditioning unit according to claim 1, characterized in that: the air energy heating radiator is a semi-closed type heating radiator and is connected with an external refrigerant pipeline through a copper pipe to form a heating radiator loop, the air energy heating radiator comprises a heating coil pipe formed by the copper pipe inside, and a refrigerant exchanges heat with water in the heating radiator through the heating coil pipe and simultaneously supplies heat to indoor radiation; the vacuum device controls the internal pressure to ensure that the water in the radiating fins is circulated under the driving of the micro pump to promote heat exchange.
3. The refrigerant control system of a double-end heat pump heating air conditioning unit according to claim 1, characterized in that: the control device comprises a temperature acquisition module, an acquisition module and a control module; the temperature acquisition module monitors the indoor air temperature and the water temperature in the radiator in real time through the temperature sensor and uploads data, and meanwhile, the real-time monitored temperature, the acquired working mode and the target temperature are displayed on the display screen; the acquisition module is used for acquiring a current working mode set by the remote control device and a target temperature in the current working mode; and the control module determines a control mode according to the working mode, the target temperature and the real-time monitoring data and controls the fluorine path switching device.
4. The refrigerant control system of a double-end heat pump heating air conditioning unit according to claim 1, characterized in that: the fluorine path switching device comprises a four-way reversing valve, a three-way valve and a check valve; the four-way reversing valve realizes refrigeration and heating of the air conditioning unit by controlling the flow direction of a refrigerant entering and exiting the compressor, the three-way valve completes switching of the flow direction of the refrigerant through the on-off of the control circuit, the refrigerant flows to the air conditioning loop when the three-way valve is powered off, and the refrigerant flows to the radiator loop when the three-way valve is powered on.
5. The refrigerant control system of a double-end heat pump heating air conditioning unit according to claim 1, characterized in that: the remote control device comprises a remote controller and an APP (application), and is used for setting and controlling a remote working mode, a local working mode and a target temperature; the working modes which can be set by the remote controller are four modes of refrigeration, heating of a heating plate and combined heating, the four modes can be manually switched, and the automatic control can be also used in the combined heating mode; the target temperature is the water temperature in the heating radiator when the heating radiator heats, and the temperature range is 35-50 ℃.
6. A method for controlling a refrigerant control system of a double-ended heat pump heating and air conditioning unit according to any one of claims 1 to 5, comprising:
s1, when the working mode is set to be refrigeration or heating, the flow direction of the refrigerant is switched by controlling the four-way reversing valve in the fluorine path switching device, so that the indoor and outdoor units of the air conditioner are refrigerated or heated, meanwhile, the three-way valve is controlled to be in a power-off state, the refrigerant pipeline between the outdoor unit and the indoor unit of the air conditioner is communicated, and the refrigerant flows to the indoor unit of the air conditioner and completes circulation along the loop of the air conditioner;
s2, when the working mode is set for heating by the radiator, the four-way reversing valve is controlled to enable the air-conditioning outdoor unit to heat, and the three-way valve is controlled to be in the power-on state at the same time, at the moment, the air energy radiator is communicated with a refrigerant pipeline between the air-conditioning outdoor unit, and the refrigerant flows to the air energy radiator and completes circulation along the radiator loop; when the water temperature in the heater exceeds a set value, the compressor stops working, and the compressor starts working after the temperature is lower than the set temperature;
s3, when the working mode is set as combined heating, the indoor air is quickly heated by the indoor unit of the air conditioner, and then the indoor temperature is maintained by the air energy radiator; the outdoor unit continuously heats in this mode, and the three-way valve is in the outage state earlier, makes the refrigerant flow direction air conditioning indoor set group to indoor air rapid heating, when monitoring that the indoor air temperature reaches preset temperature, controls the three-way valve circular telegram and makes the refrigerant switch to flow to air energy radiator to the mode of radiation heating is to indoor heating.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322086A (en) * | 2021-12-21 | 2022-04-12 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| CN114322102A (en) * | 2021-12-21 | 2022-04-12 | 青岛海尔空调器有限总公司 | Air conditioner, control method and system thereof, electronic equipment and storage medium |
| CN114484918A (en) * | 2022-01-28 | 2022-05-13 | 青岛海尔空调电子有限公司 | Air conditioning system, control method and device thereof and storage medium |
| CN114484829A (en) * | 2022-01-14 | 2022-05-13 | 青岛海尔空调器有限总公司 | Air conditioning system and control method thereof |
| CN114484798A (en) * | 2022-01-14 | 2022-05-13 | 青岛海尔空调器有限总公司 | Control method and control system for air conditioner, electronic device, and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114322086A (en) * | 2021-12-21 | 2022-04-12 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| CN114322102A (en) * | 2021-12-21 | 2022-04-12 | 青岛海尔空调器有限总公司 | Air conditioner, control method and system thereof, electronic equipment and storage medium |
| CN114484829A (en) * | 2022-01-14 | 2022-05-13 | 青岛海尔空调器有限总公司 | Air conditioning system and control method thereof |
| CN114484798A (en) * | 2022-01-14 | 2022-05-13 | 青岛海尔空调器有限总公司 | Control method and control system for air conditioner, electronic device, and storage medium |
| CN114484918A (en) * | 2022-01-28 | 2022-05-13 | 青岛海尔空调电子有限公司 | Air conditioning system, control method and device thereof and storage medium |
| CN114484918B (en) * | 2022-01-28 | 2024-05-10 | 青岛海尔空调电子有限公司 | Air conditioning system, control method and device thereof, and storage medium |
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