CN114791178A - Air conditioner injection circulation system and control method thereof - Google Patents
Air conditioner injection circulation system and control method thereof Download PDFInfo
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- CN114791178A CN114791178A CN202210118638.XA CN202210118638A CN114791178A CN 114791178 A CN114791178 A CN 114791178A CN 202210118638 A CN202210118638 A CN 202210118638A CN 114791178 A CN114791178 A CN 114791178A
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- 238000002347 injection Methods 0.000 title claims abstract description 71
- 239000007924 injection Substances 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 55
- 238000005057 refrigeration Methods 0.000 claims abstract description 43
- 238000004378 air conditioning Methods 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 5
- 239000003507 refrigerant Substances 0.000 description 17
- 239000000758 substrate Substances 0.000 description 6
- 230000006872 improvement Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/08—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using ejectors
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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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention provides an air conditioner jet circulation system and a control method thereof, wherein the system comprises: a main circulation flow path including a compressor, a condenser, a switching valve, an injection port of an ejector, and a gas-liquid separator; the heat exchange flow path comprises an evaporator and a throttling element connected to a first port of the evaporator, a second port of the evaporator is simultaneously communicated with the switching valve and an injection port of the ejector, and one end of the throttling element, which is far away from the evaporator, is selectively communicated with the bottom of the gas-liquid separator and the switching valve; the switching valve comprises a first state and a second state, wherein in the first state, the jet port of the ejector is communicated with the outlet of the condenser, and the throttling element is communicated with the gas-liquid separator; in the second state, the outlet of the condenser is communicated with the throttling element, and the injection port of the ejector is communicated with the second port of the evaporator. According to the invention, the system can operate different refrigeration modes according to different operation conditions, the comprehensive energy efficiency ratio of the system can be improved, and the stability of the system operation is ensured.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to an air conditioner jet circulation system and a control method thereof.
Background
The invention patent with publication number CN109515115A discloses an automobile air conditioning system using carbon dioxide as working medium and a control method thereof, which can improve CO 2 The refrigeration energy efficiency of the automobile air conditioner is improved, and the suction superheat degree and the operation reliability of the compressor are improved. However, the refrigerant circulation path of the system is complicated, and the ejector technology has design optimization and control difficulty and is not mature to apply.
The invention patent with publication number CN214172602U discloses a double-evaporation refrigerating device with solar energy injection and compression coupling, which improves the suction pressure of a scroll compressor and a steam ejector, improves the pressure of a secondary fluid inlet of the steam ejector during weak irradiation, improves the device performance and the solar energy utilization rate, and improves the system operation stability. However, the efficiency of the system for coupling solar energy is still low, and the improvement of the energy efficiency ratio is limited.
Disclosure of Invention
Therefore, the invention provides an air conditioner injection circulation system and a control method thereof, which can overcome the defects of complex system composition and control logic, high system construction cost and low system energy efficiency of the air conditioner injection circulation system in the prior art.
In order to solve the above problems, the present invention provides an air conditioner injection circulation system including:
the main circulation flow path comprises a compressor, a condenser, a switching valve, a jet orifice of an ejector and a gas-liquid separator which are sequentially arranged along the flow direction of a working medium;
the heat exchange flow path comprises an evaporator and a throttling element connected to a first port of the evaporator, a second port of the evaporator is simultaneously communicated with the switching valve and an injection port of the ejector, and one end, far away from the evaporator, of the throttling element is selectively communicated with the bottom of the gas-liquid separator and the switching valve;
wherein the switching valve includes a first state in which the injection port of the ejector communicates with the outlet of the condenser and the throttle member communicates with the gas-liquid separator, and a second state; in the second state, the outlet of the condenser is communicated with the throttling element, and the injection port of the ejector is communicated with the second port of the evaporator.
In some embodiments of the present invention, the substrate is,
a first one-way valve is arranged on a pipeline between the throttling element and the gas-liquid separator, and only working medium is allowed to flow from the gas-liquid separator to the throttling element; and/or a second one-way valve is arranged on a pipeline between the throttling element and the switching valve, and only the working medium is allowed to flow from the switching valve to the throttling element.
In some embodiments of the present invention, the substrate is,
the switching valve is a four-way valve, the four-way valve is provided with a D port, an E port, an S port and a C port, and when the switching valve is in the first state, the D port is communicated with the E port and the C port is communicated with the S port; when the switching valve is in the second state, the port D is communicated with the port C, and the port E is communicated with the port S.
In some embodiments of the present invention, the substrate is,
when the air conditioner injection circulation system operates in an injection refrigeration mode, the switching valve is in a first state, so that gaseous working media flowing out of the condenser and flowing into the gas-liquid separator are sucked into the compressor, and liquid working media in the gas-liquid separator enter the evaporator and then enter the injection port of the injector.
In some embodiments of the present invention, the substrate is,
when the air conditioner injection circulation system expansion valve is in a refrigeration mode, the switching valve is in a second state, so that the working medium flowing out of the condenser enters the evaporator, flows into the gas-liquid separator through the injection port and the injection port of the ejector and is sucked into the compressor.
The invention also provides a control method of the air conditioner injection circulation system, which is used for controlling the air conditioner injection circulation system and comprises the following steps:
acquiring an operation mode of a system;
and controlling and switching the state of the switching valve according to the acquired operation mode.
In some embodiments of the present invention, the substrate is,
and when the operation mode is an injection refrigeration mode, controlling the switching valve to be in a first state so that the gaseous working medium flowing out of the condenser flows into the gas-liquid separator and then is sucked into the compressor, and the liquid working medium in the gas-liquid separator flows into the evaporator and then flows into the injection port of the injector.
In some embodiments of the present invention, the substrate is,
and when the air conditioner injection circulation system expansion valve is in a refrigeration mode, the switching valve is controlled to be in a second state, so that the working medium flowing out of the condenser flows through the evaporator in sequence, flows into the gas-liquid separator through the injection port and the injection port of the ejector and is sucked into the compressor.
According to the air conditioner injection circulation system and the control method thereof provided by the invention, the switching of the system between the injection refrigeration mode and the expansion valve refrigeration mode is realized by switching the state of the switching valve, so that the system can operate different refrigeration modes according to different operation conditions, the comprehensive energy efficiency ratio of the system can be improved, the stability of the system operation is ensured, meanwhile, the composition structure of the system is simplified, the corresponding control logic is simplified, and the system construction cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a system of an air conditioning injection circulation system according to an embodiment of the present invention, in which a switching valve is in a first state;
fig. 2 is a schematic system diagram of an air conditioning injection circulation system according to an embodiment of the present invention, in which a switching valve is in a second state.
The reference numerals are represented as:
1. a compressor; 2. a condenser; 3. a switching valve; 4. an ejector; 5. a gas-liquid separator; 6. an evaporator; 7. a throttling element; 81. a first check valve; 82. a second one-way valve; 91. an inner fan; 92. an outer fan.
Detailed Description
Referring to fig. 1 to 2 in combination, according to an embodiment of the present invention, there is provided an air conditioner spray cycle system including: the main circulation flow path comprises a compressor 1, a condenser 2, a switching valve 3, an injection port of an injector 4 and a gas-liquid separator 5 which are sequentially arranged along the flow direction of a working medium; a heat exchange flow path which comprises an evaporator 6 and a throttling element 7 connected to a first port of the evaporator 6, wherein a second port of the evaporator 6 is simultaneously communicated with the switching valve 3 and an injection port of the ejector 4, and one end of the throttling element 7, which is far away from the evaporator 6, is selectively communicated with the bottom of the gas-liquid separator 5 and the switching valve 3; wherein the switching valve 3 includes a first state in which the injection port of the ejector 4 communicates with the outlet of the condenser 2 and the throttle member 7 communicates with the gas-liquid separator 5, and a second state; in the second state, the outlet of the condenser 2 communicates with the throttle element 7, and the injection port of the ejector 4 communicates with the second port of the evaporator 6. In the technical scheme, the switching between the injection refrigeration mode (when the switching valve 3 is in the first state) and the expansion valve refrigeration mode (when the switching valve 3 is in the second state) of the system is realized by switching the states of the switching valve 3, so that the system can operate different refrigeration modes according to different operation conditions, the comprehensive energy efficiency ratio of the system can be improved, and the stability of the system operation is ensured.
The working medium refers to a medium substance by which various heat engines or thermal equipment can convert heat energy and mechanical energy into each other, and is commonly water, a refrigerant, air and the like.
It should be noted that the energy efficiency of the system in one operation mode is different due to the difference of the thermal load of the environment where the system is located, for example, under a normal-temperature (specifically, 20 ℃ to 26 ℃) working condition, the energy efficiency of the system in the expansion valve refrigeration mode is relatively high, and under an adverse (specifically, for example, lower than 20 ℃ or higher than 26 ℃) working condition that is not normal-temperature, the energy efficiency of the system in the injection refrigeration mode is relatively high, so that the system of the present application may be correspondingly entered into different operation modes according to these preset working conditions, and further, the comprehensive energy efficiency ratio of the system is improved.
In some embodiments, a first check valve 81 is disposed on the pipeline between the throttling element 7 and the gas-liquid separator 5, and only allows the working medium to flow from the gas-liquid separator 5 to the throttling element 7; and/or a second one-way valve 82 is arranged on a pipeline between the throttling element 7 and the switching valve 3, and only the flow of the working medium from the switching valve 3 to the throttling element 7 is allowed. The first check valve 81 and the second check valve 82 can be electromagnetically controlled, and in some possible cases, mechanical differential pressure check valves can be adopted, and the combination of the first check valve 81 and the second check valve 82 and the switching valve 3 can guide the flow direction of working media in different operation modes, so that the normal operation of the modes is ensured.
In some embodiments, the switching valve 3 is a four-way valve having a port D, a port E, a port S, and a port C, the port D communicating with the port E and the port C communicating with the port S when the switching valve 3 is in the first state; when the switching valve 3 is in the second state, the port D is communicated with the port C, and the port E is communicated with the port S, so that the system structural design can be further simplified by utilizing the four-way flow path switching characteristic of the four-way valve.
In some embodiments, when the air conditioning injection cycle system operates in the injection refrigeration mode, the switching valve 3 is in the first state, so that the gaseous working medium flowing out of the condenser 2 into the gas-liquid separator 5 is sucked into the compressor 1, and the liquid working medium in the gas-liquid separator 5 enters the evaporator 6 and then enters the injection port of the ejector 4, in this mode, the ejector 4 can fully recover the expansion work in the throttling process, thereby increasing the suction pressure of the compressor 1 (in a specific embodiment, a scroll compressor) and reducing the power consumption of the compressor 1.
In some embodiments, when the air conditioning injection cycle expansion valve is in the cooling mode, the switching valve 3 is in the second state, so that the working medium flowing out of the condenser 2 enters the evaporator 6, flows into the gas-liquid separator 5 through the injection port and the injection port of the ejector 4, and is sucked into the compressor 1, and in this mode, the ejector 4 corresponds to a section of pipeline, which does not perform an injection pressurization function.
According to an embodiment of the present invention, there is also provided a control method of an air conditioner ejector cycle system, for controlling the air conditioner ejector cycle system, including:
acquiring an operation mode of a system;
and controlling and switching the state of the switching valve 3 according to the acquired operation mode.
Specifically, when the operation mode is an injection refrigeration mode, the switching valve 3 is controlled to be in a first state, so that the gaseous working medium flowing out of the condenser 2 into the gas-liquid separator 5 is sucked into the compressor 1, and the liquid working medium in the gas-liquid separator 5 enters the evaporator 6 and then flows into the injection port of the injector 4; and when the air conditioner injection circulation system expansion valve is in a refrigeration mode, the switching valve 3 is controlled to be in a second state, so that the working medium flowing out of the condenser 2 sequentially flows through the evaporator 6, flows into the gas-liquid separator 5 through the injection port and the injection port of the ejector 4 and is sucked into the compressor 1.
In the technical scheme, the switching between the injection refrigeration mode (when the switching valve 3 is in the first state) and the expansion valve refrigeration mode (when the switching valve 3 is in the second state) of the system is realized by switching the states of the switching valve 3, so that the system can operate different refrigeration modes according to different operation conditions, the comprehensive energy efficiency ratio of the system can be improved, and the stability of the system operation is ensured.
The technical scheme of the invention is further described by combining the following figures 1 and 2:
in an air conditioning injection circulation system (also referred to as a refrigeration air conditioning system with injection circulation) of the present invention, a compressor 1 is connected with a condenser 2, an expansion valve (also referred to as a throttling element 7, the same below) and an evaporator 6 to form a conventional expansion valve refrigeration circulation system, the compressor 1 is connected with the condenser 2, an electromagnetic four-way valve (also referred to as the switching valve 3, the same below), an ejector 4 and the evaporator 6 to form an injection refrigeration circulation system, and the switching between the expansion valve refrigeration circulation system and the injection refrigeration circulation system is performed by adjusting the opening and closing of the electromagnetic four-way valve in the system. The system has simple structure and convenient operation control, can adapt to different operation working conditions, and improves the comprehensive energy efficiency ratio of the system.
(1) The flow of the expansion valve in the refrigeration mode is as follows: as shown in fig. 2, the compressor → the condenser → the electromagnetic four-way valve D → the electromagnetic four-way valve C → the second one-way valve 82 → the expansion valve → the evaporator → the ejector → the gas-liquid separator → the compressor.
(2) The flow of the injection refrigeration mode of the invention is as follows: as shown in fig. 1, the compressor → the condenser → the electromagnetic four-way valve D → the electromagnetic four-way valve E → the ejector → the gas-liquid separator → the first one-way valve 81 → the expansion valve → the evaporator → the ejector → the gas-liquid separator → the compressor.
The refrigeration air-conditioning system with the jet circulation is provided with the electromagnetic four-way valve and the one-way valve which are used together for switching the expansion valve refrigeration circulation and the jet refrigeration circulation system. The switching between the expansion valve refrigeration cycle and the injection refrigeration cycle is realized by adding the electromagnetic four-way valve and the one-way valve at the proper position of the compression refrigeration cycle, and by utilizing the opening and closing of the electromagnetic four-way valve and the one-way conduction action of the one-way valve. The one-way valve is preferably arranged on a liquid inlet pipeline of the expansion valve, and the electromagnetic four-way valve is preferably arranged on a rear exhaust pipeline of the condenser and in front of the ejector.
When the system is in an injection refrigeration cycle system, the electromagnetic four-way valve DE and the electromagnetic four-way valve SC are communicated, the second one-way valve 82 is closed, the first one-way valve 81 is opened, the refrigerant passes through the expansion valve after passing through the ejector, and the ejector starts to operate at the moment to play a role as a lifting device; when the system is in an expansion valve refrigeration cycle system, the electromagnetic four-way valve DC and the SE are communicated, the second one-way valve 82 is opened, the first one-way valve 81 is closed, the refrigerant firstly passes through the expansion valve and then passes through the ejector, and the ejector stops running at the moment and does not play any role.
The working principle of the invention is explained as follows:
(1) expansion valve cooling mode (see FIG. 2)
The high-temperature high-pressure refrigerant gas discharged by the compressor enters a condenser, the refrigerant is condensed into normal-temperature high-pressure liquid after releasing heat to outdoor air, enters an expansion valve through a solenoid four-way valve and a second one-way valve 82, is throttled and decompressed by the expansion valve to form two-phase low-temperature low-pressure refrigerant, flows to an evaporator and absorbs heat in the evaporator to be evaporated into low-pressure gas, and enters a gas-liquid separator after passing through an ejector, and the gas-phase refrigerant returns to a suction port of the compressor through an air outlet pipe to complete a refrigeration cycle. In this mode of operation, the first check valve 81 is closed and the injector ceases operation.
(2) Injection refrigeration mode (see FIG. 1)
The high-temperature high-pressure refrigerant gas discharged by the compressor enters a condenser, the refrigerant is condensed into normal-temperature high-pressure liquid after releasing heat to outdoor air, the normal-temperature high-pressure liquid enters an ejector through a four-way electromagnetic valve, the low-temperature low-pressure refrigerant gas (the low-pressure refrigerant gas from the outlet of an evaporator) and the refrigerant mixed with the condensed liquid enter a gas-liquid separator under the action of the ejector, and the gas-phase refrigerant returns to the air suction port of the compressor through an air outlet pipe to perform the next refrigeration cycle; the liquid refrigerant passes through the first one-way valve 81, is throttled and depressurized again through the expansion valve to become a two-phase low-temperature low-pressure refrigerant, flows to the evaporator, absorbs heat in the evaporator to be evaporated into low-pressure gas, enters the injection port of the ejector, is mixed with the high-pressure refrigerant in the mixing section, and enters the gas-liquid separator again to complete a refrigeration cycle. In this mode of operation, the second check valve 82 is closed.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (8)
1. An air conditioner spray cycle system, comprising:
the main circulation flow path comprises a compressor (1), a condenser (2), a switching valve (3), an injection port of an injector (4) and a gas-liquid separator (5) which are sequentially arranged along the flow direction of a working medium;
the heat exchange flow path comprises an evaporator (6) and a throttling element (7) connected to a first port of the evaporator (6), a second port of the evaporator (6) is communicated with the switching valve (3) and an injection port of the ejector (4) at the same time, and one end, far away from the evaporator (6), of the throttling element (7) is selectively communicated with the bottom of the gas-liquid separator (5) and the switching valve (3);
wherein the switching valve (3) comprises a first state in which the injection port of the ejector (4) communicates with the outlet of the condenser (2) and a second state in which the throttling element (7) communicates with the gas-liquid separator (5); in the second state, the outlet of the condenser (2) is communicated with the throttling element (7), and the injection port of the ejector (4) is communicated with the second port of the evaporator (6).
2. An air conditioning spray circulation system according to claim 1,
a first one-way valve (81) is arranged on a pipeline between the throttling element (7) and the gas-liquid separator (5), and only the working medium is allowed to flow from the gas-liquid separator (5) to the throttling element (7); and/or a second one-way valve (82) is arranged on a pipeline between the throttling element (7) and the switching valve (3) and only allows the working medium to flow from the switching valve (3) to the throttling element (7).
3. An air conditioning spray circulation system according to claim 1,
the switching valve (3) is a four-way valve, the four-way valve is provided with a port D, a port E, a port S and a port C, and when the switching valve (3) is in the first state, the port D is communicated with the port E and the port C is communicated with the port S; when the switching valve (3) is in the second state, the port D is communicated with the port C, and the port E is communicated with the port S.
4. An air conditioning spray cycle system according to any one of claims 1 to 3,
when the air conditioner injection circulation system operates in an injection refrigeration mode, the switching valve (3) is in a first state, so that gaseous working media flowing out of the condenser (2) and flowing into the gas-liquid separator (5) are sucked into the compressor (1), and liquid working media in the gas-liquid separator (5) enter the evaporator (6) and then enter the injection port of the ejector (4).
5. An air conditioner injection circulation system according to any one of claims 1 to 3,
when the air conditioner injection circulation system expansion valve is in a refrigeration mode, the switching valve (3) is in a second state, so that the working medium flowing out of the condenser (2) enters the evaporator (6), flows into the gas-liquid separator (5) through the injection port and the injection port of the ejector (4) and is sucked into the compressor (1).
6. A control method of an air conditioner ejector cycle system for controlling the air conditioner ejector cycle system of any one of claims 1 to 5, comprising:
acquiring an operation mode of a system;
and controlling and switching the state of the switching valve (3) according to the acquired operation mode.
7. The control method according to claim 6,
when the operation mode is an injection refrigeration mode, the switching valve (3) is controlled to be in a first state, so that the gaseous working medium flowing out of the condenser (2) and flowing into the gas-liquid separator (5) is sucked into the compressor (1), and the liquid working medium in the gas-liquid separator (5) flows into the ejector port of the ejector (4) after entering the evaporator (6).
8. The control method according to claim 6,
and when the air conditioner injection circulation system expansion valve is in a refrigeration mode, the switching valve (3) is controlled to be in a second state, so that the working medium flowing out of the condenser (2) sequentially flows through the evaporator (6), flows into the gas-liquid separator (5) through the injection port and the injection port of the ejector (4) and is sucked into the compressor (1).
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| CN202210118638.XA CN114791178A (en) | 2022-02-08 | 2022-02-08 | Air conditioner injection circulation system and control method thereof |
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| CN217178932U (en) * | 2022-02-08 | 2022-08-12 | 珠海格力电器股份有限公司 | Air conditioner jet circulation system |
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2022
- 2022-02-08 CN CN202210118638.XA patent/CN114791178A/en active Pending
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|---|---|---|---|---|
| US20020124592A1 (en) * | 2001-03-01 | 2002-09-12 | Hirotsugu Takeuchi | Ejector cycle system |
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| CN103542570A (en) * | 2013-10-30 | 2014-01-29 | 上海交通大学 | Injection circulation with automatic defrosting and oil return functions |
| CN217178932U (en) * | 2022-02-08 | 2022-08-12 | 珠海格力电器股份有限公司 | Air conditioner jet circulation system |
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