CN112628850A - Split type double-source heat pump air conditioning unit and operation method thereof - Google Patents
Split type double-source heat pump air conditioning unit and operation method thereof Download PDFInfo
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- CN112628850A CN112628850A CN202011514332.3A CN202011514332A CN112628850A CN 112628850 A CN112628850 A CN 112628850A CN 202011514332 A CN202011514332 A CN 202011514332A CN 112628850 A CN112628850 A CN 112628850A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
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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
- F25B30/02—Heat pumps of the compression type
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by 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
- 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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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
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- Other Air-Conditioning Systems (AREA)
Abstract
The invention relates to a split type double-source heat pump air conditioning unit and an operation method thereof. The split type double-source heat pump air conditioning unit comprises: the system comprises a compressor, a condenser and a mode switching device which are sequentially communicated through a pipeline, wherein a first output port of the mode switching device is connected with a water source heat exchange branch, and a second output port of the mode switching device is connected with an air source heat exchange branch; the water source heat exchange branch comprises a first throttling device and a water source evaporator, a first output port of the mode switching device, the first throttling device, the water source evaporator and an air suction port of the compressor are sequentially communicated, and the water source evaporator is arranged indoors; the air source heat exchange branch comprises a second throttling device and an air source evaporator, a second output port of the mode switching device, the second throttling device, the air source evaporator and an air suction port of the compressor are communicated in sequence, and the air source evaporator is installed outdoors in a split mode. The invention can reduce the installation difficulty of the water pipeline and realize annual high-efficiency cooling and heating.
Description
Technical Field
The invention relates to the field of air conditioner condensation heat recovery, in particular to a split type double-source heat pump air conditioning unit and an operation method thereof.
Background
Along with the improvement of living standard of people, the demand of people for air conditioner and hot water is more and more, and the energy consumption ratio of the air conditioner and the hot water is very high. In many places, such as hospitals, hotels, schools and the like, there is a great demand for hot water while refrigerating and air conditioning are needed, and the hot water is needed all the year round.
At present, refrigerating air and hot water are respectively provided by an air conditioner and a water heater, the air conditioner and the water heater have high energy consumption, large investment cost and complex equipment installation design, and waste heat is directly discharged into the air through a cooling tower or an air-cooled heat exchanger, so that energy waste is caused, and heat pollution is caused to the environment.
In recent years, some integral air source heat pump units (integral double-source heat pump units) for providing heat recovery are also presented in the market successively, and hot water is produced by recovering condensation heat during refrigeration in summer, so that living hot water can be provided while air conditioning is guaranteed, and heat supply or living hot water can be provided in an air source heat pump mode in winter; however, the common equipment is an integral air-cooled cold water (heat pump) unit with heat recovery (integral dual-source heat pump unit), the air source refrigeration and heating efficiency is low, the heat recovery efficiency is low, the equipment is selected singly for a project, a water-cooled cold water unit installed in an underground machine room and a water system of the heat recovery unit cannot be well combined, or the water pipeline design and installation are very complicated, the design and installation requirements for an air-conditioning water pipe system are high, so that the unit is not high in energy efficiency ratio and the integral energy-saving effect is not obvious in the actual operation. Or some water-water heat pump units recover cold for use by the air conditioner during heating, but the water-water heat pump units cannot continue to supply heat when the air conditioner does not need the cold supply in winter, or an energy tower mode is adopted for supplying heat, and a corrosive salt solution is required to be used as a heating medium, so that the system is complex, the efficiency is low, and the operation is unreliable.
Disclosure of Invention
The invention aims to provide a split type double-source heat pump air conditioning unit and an operation method thereof, and aims to solve the problems of high energy consumption, high investment cost and high installation and design difficulty caused by the existing single air source refrigeration and heating, and the problems that a water-water heat pump unit cannot continue to heat without cooling demand in winter, and cannot realize efficient cooling and heating all the year round.
In order to achieve the purpose, the invention provides the following scheme:
a split type double-source heat pump air conditioning unit comprises: the compressor, the condenser and the mode switching device are sequentially communicated through a pipeline;
the compressor is provided with a suction port and a discharge port, and the mode switching device comprises a first output port and a second output port connected with the first output port in parallel; the first output port is connected with the water source heat exchange branch, and the second output port is connected with the air source heat exchange branch;
the water source heat exchange branch comprises a first throttling device and a water source evaporator, and the first output port, the first throttling device, the water source evaporator and an air suction port of the compressor are communicated in sequence;
the air source heat exchange branch comprises a second throttling device and an air source evaporator, and the second output port, the second throttling device, the air source evaporator and an air suction port of the compressor are communicated in sequence.
Optionally, an economizer is connected between the condenser and the mode switching device.
Optionally, the first throttling device is a throttle valve, an electronic expansion valve or a thermal expansion valve.
Optionally, the second throttling device is a throttle valve, an electronic expansion valve or a thermal expansion valve.
Optionally, the mode switching device is a three-way valve.
Optionally, the mode switching device is two manual ball valves, electric valves or electromagnetic valves connected in parallel.
Optionally, the method further includes: and the compressor, the condenser, the mode switching device, the first throttling device, the water source evaporator, the second throttling device and the air source evaporator are all electrically connected with the controller.
An operation method of a split type double-source heat pump air conditioning unit comprises the following steps:
the operation modes of the split type double-source heat pump air conditioning unit comprise a water source heat pump operation mode and an air source heat pump operation mode;
when the split type double-source heat pump air conditioning unit is in the water source heat pump operation mode, gaseous refrigerant discharged from an exhaust port of the compressor enters the condenser, the gaseous refrigerant in the condenser transfers heat to cold water to prepare hot water, the gaseous refrigerant is changed into a supercooled liquid refrigerant after passing through the condenser, the liquid refrigerant enters a first throttling device through a first output port of the mode switching device, the first throttling device reduces the pressure and throttles the liquid refrigerant and then enters the water source evaporator, then the refrigerant enters a water source evaporator, the liquid refrigerant exchanges heat with cold water of the air conditioner in the water source evaporator, the liquid refrigerant is evaporated into gaseous refrigerant in the water source evaporator, the gaseous refrigerant enters a compressor through an air suction port of the compressor, the compressor compresses the gaseous refrigerant, the circulation process of the water source heat pump is completed, and domestic hot water and cold water of the air conditioner are provided;
when the split type double-source heat pump air conditioning unit is in the air source heat pump operation mode, gaseous refrigerants discharged from an exhaust port of the compressor enter the condenser, the gaseous refrigerants in the condenser transfer heat to cold water to prepare hot water, the gaseous refrigerants pass through the condenser and then become supercooled liquid refrigerants, the liquid refrigerants pass through a second output port of the mode switching device and enter the second throttling device, the second throttling device performs pressure reduction throttling on the liquid refrigerants, then the refrigerants enter the air source evaporator, the liquid refrigerants exchange heat with air in the air source evaporator, the liquid refrigerants are evaporated into gaseous refrigerants after heat exchange, the gaseous refrigerants enter the compressor through an air suction port of the compressor, the compressor compresses the gaseous refrigerants, and the circulation process of the air source heat pump is completed to provide domestic hot water.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: the invention provides a split type double-source heat pump air conditioning unit and an operation method thereof.A mode switching device is arranged, and two output ports of the mode switching device are respectively connected with a water source heat exchange branch and an air source heat exchange branch, so that the split type double-source heat pump air conditioning unit has the function of absorbing heat of a water source and an air source to prepare hot water; when the water source heat pump operates in a mode, the water source heat pump can simultaneously have the functions of preparing cold water and hot water; the water source heat exchange branch and the air source heat exchange branch are arranged in a split manner through the mode switching device, so that the water pipeline can be intensively installed, and the installation difficulty of the water pipeline is further reduced; meanwhile, the mode switching device can realize the switching between a water source heat pump mode and an air source heat pump mode, reduces switching devices for switching the air paths of the evaporator and the condenser, reduces the pressure reduction of the pipelines caused by the air path switching process, and reduces the problem of liquid return of the compressor caused by the backflow of the refrigerant caused by the air path switching, thereby improving the energy efficiency and the reliability of the split type double-source heat pump air conditioning unit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a split type dual-source heat pump air conditioning unit according to an embodiment of the invention.
Description of the symbols: 1. a compressor; 2. a condenser; 3. an economizer; 4. a mode switching device; 5. a first throttling device; 6. a second throttling device; 7. a water source evaporator; 8. an air source evaporator.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The invention aims to provide a split type double-source heat pump air conditioning unit and an operation method thereof, which can reduce the installation difficulty of a water pipeline, improve the energy efficiency and reliability of the split type double-source heat pump air conditioning unit and realize annual efficient cooling and heating.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, a preferred embodiment of the present invention provides a split type dual-source heat pump air conditioning unit, which includes a compressor 1, a condenser 2, and a mode switching device 4, which are sequentially connected through a pipeline, wherein the compressor 1 has an air suction port and an air discharge port, the mode switching device 4 has a first output port and a second output port connected in parallel with the first output port, the first output port of the mode switching device 4 is connected to a water source heat exchange branch, and the second output port of the mode switching device 4 is connected to an air source heat exchange branch.
The water source heat exchange branch comprises a first throttling device 5 and a water source evaporator 7, and a first output port of the mode switching device 4, the first throttling device 5, the water source evaporator 7 and an air suction port of the compressor 1 are communicated in sequence.
The air source heat exchange branch comprises a second throttling device 6 and an air source evaporator 8, and a second output port of the mode switching device 4, the second throttling device 6, the air source evaporator 8 and an air suction port of the compressor 1 are communicated in sequence.
In this embodiment, as shown in fig. 1, an economizer 3 is connected between the condenser 2 and the mode switching device 4, the economizer 3 is a heat exchanger, and the degree of supercooling of the liquid refrigerant can be increased by throttling, evaporating and absorbing heat by the refrigerator itself to supercool another part of the refrigerator; it should be noted that the economizer 3 is mainly configured for a long connecting pipe unit, and the pressure reduction of the liquid pipe is considered, so that the phenomenon that the supercooling degree does not exist after the liquid pipe passes through the long connecting pipe and before the throttling device, and the heating effect is influenced is prevented.
In this embodiment, as shown in fig. 1, the first throttling device 5 must be a throttling device capable of adjusting the flow rate, and specifically, a throttling valve, an electronic expansion valve or a thermal expansion valve may be selected, and from the comprehensive consideration of control and cost, the throttling valve is preferably selected here, and the throttling valve can accurately control the flow rate of the refrigerant.
In this embodiment, as shown in fig. 1, the second throttling device 6 must be a throttling device capable of adjusting the flow rate, and the second throttling device 6 is a throttling valve, an electronic expansion valve or a thermostatic expansion valve, and is triggered by a comprehensive consideration of control and cost, where the throttling valve is preferably selected and used to accurately control the flow rate of the refrigerant.
In this embodiment, as shown in fig. 1, the mode switching device 4 is a three-way valve having an input port, a first output port, and a second output port, the input port of the three-way valve is connected to the output port of the economizer 3, the first output port of the three-way valve is connected to the first throttling device 5, and the second output port of the three-way valve is connected to the second throttling device 6.
In this embodiment, as shown in fig. 1, the mode switching device 4 is two manual ball valves or electric valves or electromagnetic valves connected in parallel, an input port of each manual ball valve or an input port of each electric valve or an input port of each electromagnetic valve is connected to an output port of the economizer 3, two output ports of each manual ball valve are respectively connected to the first throttling device 5 and the second throttling device 6, two output ports of each electric valve are respectively connected to the first throttling device 5 and the second throttling device 6, and two output ports of each electromagnetic valve are respectively connected to the first throttling device 5 and the second throttling device 6.
In this embodiment, as shown in fig. 1, the split type dual-source heat pump air conditioning unit further includes a controller, the compressor, the condenser, the mode switching device, the first throttling device, the water source evaporator, the second throttling device, and the air source evaporator are all electrically connected to the controller, and the controller can open and close each component.
Based on the split type double-source heat pump air conditioning unit provided by the invention, the invention provides an operation method of the split type double-source heat pump air conditioning unit, which comprises the following steps:
the split type double-source heat pump air conditioning unit has a water source heat pump operation mode and an air source heat pump operation mode.
When the split type double-source heat pump air conditioning unit is in a water source heat pump operation mode, gaseous refrigerants discharged from an exhaust port of a compressor 1 enter a condenser 2, the gaseous refrigerants in the condenser 2 transfer heat to cold water to prepare hot water, the gaseous refrigerants pass through the condenser 2 and then become supercooled liquid refrigerants, the liquid refrigerants pass through a first output port of a mode switching device 4 and enter a first throttling device 5, the first throttling device 5 performs pressure reduction throttling on the liquid refrigerants, then the refrigerants enter a water source evaporator 7, the liquid refrigerants perform heat exchange with air conditioner cold water in the water source evaporator 7, the liquid refrigerants are evaporated into gaseous refrigerants in the water source evaporator 7, the gaseous refrigerants enter the compressor 1 through an air suction port of the compressor 1, and the compressor 1 compresses the gaseous refrigerants, so that the circulation process of the water source heat pump is completed; in the whole water source heat pump operation mode process, the split type double-source heat pump air conditioning unit can provide domestic hot water and air conditioning cold water.
When the split type double-source heat pump air conditioning unit is in an air source heat pump operation mode, gaseous refrigerants discharged from an exhaust port of a compressor 1 enter a condenser 2, the gaseous refrigerants in the condenser 2 transfer heat to cold water to prepare hot water, the gaseous refrigerants pass through the condenser 2 and then become supercooled liquid refrigerants, the liquid refrigerants pass through a second output port of a mode switching device 4 and enter a second throttling device 6, the second throttling device 6 performs pressure reduction throttling on the liquid refrigerants, then the refrigerants enter an air source evaporator 8, the liquid refrigerants exchange heat with air in the air source evaporator 8, the liquid refrigerants are evaporated into gaseous refrigerants after heat exchange, the gaseous refrigerants enter the compressor 1 through an air suction port of the compressor 1, and the compressor 1 compresses the gaseous refrigerants so as to finish the circulation process of the air source heat pump; in the whole air source heat pump operation mode process, the split type double-source heat pump air conditioning unit can provide domestic hot water.
Based on the arrangement, the split type double-source heat pump air conditioning unit provided by the embodiment of the invention has the following advantages:
(1) the split type double-source heat pump air conditioning unit provided by the embodiment of the invention has the functions of preparing cold air and hot water, and has the advantages of low energy consumption, high economic benefit and small installation and design difficulty;
(2) by arranging the water source heat exchange branch and the air source heat exchange branch which are separately arranged through the mode switching device 4, the water pipelines can be intensively installed, and the installation difficulty of the water pipelines is further reduced;
(3) by arranging the mode switching device 4, the mode switching device 4 can realize the switching between the water source heat pump mode and the air source heat pump mode, reduces switching devices for gas circuit switching, reduces the pressure reduction of a pipeline caused by the gas circuit switching process, and reduces the problem of liquid return of a compressor caused by the backflow of a refrigerant caused by the gas circuit switching, thereby improving the energy efficiency and the reliability of the split type double-source heat pump air conditioning unit.
In conclusion, the invention can solve the problems of high energy consumption and high investment cost caused by that the refrigeration air and the hot water are respectively provided by the air conditioner and the water heater in the prior art; the integrated air-cooled water chiller (heat pump) unit with heat recovery (integrated dual-source heat pump unit) can be further solved, the air source refrigeration and heating efficiency is low, the heat recovery efficiency is low, the integrated air-cooled water chiller (heat pump) unit can only be placed outdoors, the integrated air-cooled water chiller (heat pump) unit can not be well combined with a water system of a water-cooled water chiller unit installed in an underground machine room, the design and installation of a water pipeline are very complex, the design and installation requirements for an air-conditioning water pipeline system are high, and the problems that the unit is in actual operation, the energy efficiency ratio is not high.
The split type double-source heat pump air conditioning unit provided by the embodiment of the invention has the advantages of simultaneously having the functions of preparing cold air and hot water, being low in energy consumption, high in economic benefit, low in installation difficulty of water pipelines, capable of reducing pipeline pressure reduction caused by the gas circuit switching process and capable of improving the energy efficiency and reliability of the split type double-source heat pump air conditioning unit.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. The utility model provides a split type dual-source heat pump air conditioning unit which characterized in that includes: the compressor, the condenser and the mode switching device are sequentially communicated through a pipeline;
the compressor is provided with a suction port and a discharge port, and the mode switching device comprises a first output port and a second output port connected with the first output port in parallel; the first output port is connected with the water source heat exchange branch, and the second output port is connected with the air source heat exchange branch;
the water source heat exchange branch comprises a first throttling device and a water source evaporator, and the first output port, the first throttling device, the water source evaporator and an air suction port of the compressor are communicated in sequence;
the air source heat exchange branch comprises a second throttling device and an air source evaporator, and the second output port, the second throttling device, the air source evaporator and an air suction port of the compressor are communicated in sequence.
2. The split dual source heat pump air conditioning unit of claim 1, wherein an economizer is connected between the condenser and the mode switching device.
3. The split type dual-source heat pump air conditioning unit as claimed in claim 1, wherein the first throttling means is a throttle valve or an electronic expansion valve or a thermostatic expansion valve.
4. The split type dual-source heat pump air conditioning unit as claimed in claim 1, wherein the second throttling means is a throttle valve or an electronic expansion valve or a thermostatic expansion valve.
5. The split dual source heat pump air conditioning unit of claim 1, wherein the mode switching device is a three-way valve.
6. The split dual-source heat pump air conditioning unit as claimed in claim 1, wherein the mode switching means is two manual ball valves, electric valves or electromagnetic valves connected in parallel with each other.
7. The split dual source heat pump air conditioning unit of claim 1, further comprising: and the compressor, the condenser, the mode switching device, the first throttling device, the water source evaporator, the second throttling device and the air source evaporator are all connected with the controller.
8. An operation method of a split type dual-source heat pump air conditioning unit, which is applied to the split type dual-source heat pump air conditioning unit according to any one of claims 1 to 7, and comprises the following steps:
the operation modes of the split type double-source heat pump air conditioning unit comprise a water source heat pump operation mode and an air source heat pump operation mode;
when the split type double-source heat pump air conditioning unit is in the water source heat pump operation mode, gaseous refrigerants discharged from an exhaust port of a compressor enter a condenser, the gaseous refrigerants in the condenser transfer heat to cold water to prepare hot water, the gaseous refrigerants pass through the condenser and then become supercooled liquid refrigerants, the liquid refrigerants pass through a first output port of a mode switching device and enter a first throttling device, the first throttling device performs pressure reduction throttling on the liquid refrigerants, then the refrigerants enter a water source evaporator, the liquid refrigerants exchange heat with cold water of an air conditioner in the water source evaporator, the liquid refrigerants are evaporated into the gaseous refrigerants in the water source evaporator, the gaseous refrigerants enter a compressor through an air suction port of the compressor, the compressor compresses the gaseous refrigerants, the circulation process of the water source heat pump is completed, and domestic hot water and cold water of the air conditioner are provided; the refrigerant comprises a liquid refrigerant and a gaseous refrigerant;
when the split type double-source heat pump air conditioning unit is in the air source heat pump operation mode, gaseous refrigerants discharged from an exhaust port of the compressor enter the condenser, the gaseous refrigerants in the condenser transfer heat to cold water to prepare hot water, the gaseous refrigerants pass through the condenser and then become supercooled liquid refrigerants, the liquid refrigerants pass through a second output port of the mode switching device and enter the second throttling device, the second throttling device performs pressure reduction throttling on the liquid refrigerants, then the refrigerants enter the air source evaporator, the liquid refrigerants exchange heat with air in the air source evaporator, the liquid refrigerants are evaporated into gaseous refrigerants after heat exchange, the gaseous refrigerants enter the compressor through an air suction port of the compressor, the compressor compresses the gaseous refrigerants, and the circulation process of the air source heat pump is completed to provide domestic hot water.
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| CN202011514332.3A CN112628850A (en) | 2020-12-21 | 2020-12-21 | Split type double-source heat pump air conditioning unit and operation method thereof |
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| CN202011514332.3A CN112628850A (en) | 2020-12-21 | 2020-12-21 | Split type double-source heat pump air conditioning unit and operation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113587430A (en) * | 2021-07-21 | 2021-11-02 | 广州量能达热能有限公司 | Heat exchange device, system and method of air energy water heater |
| CN113587430B (en) * | 2021-07-21 | 2022-08-23 | 广州量能达热能科技有限公司 | Heat exchange device, system and method of air energy water heater |
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