CN111174457A - Air conditioning system capable of preventing operation with liquid and control method - Google Patents
Air conditioning system capable of preventing operation with liquid and control method Download PDFInfo
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- CN111174457A CN111174457A CN202010011489.8A CN202010011489A CN111174457A CN 111174457 A CN111174457 A CN 111174457A CN 202010011489 A CN202010011489 A CN 202010011489A CN 111174457 A CN111174457 A CN 111174457A
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- liquid
- conditioning system
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- 239000007788 liquid Substances 0.000 title claims abstract description 92
- 238000004378 air conditioning Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000003507 refrigerant Substances 0.000 claims abstract description 33
- 238000001704 evaporation Methods 0.000 claims abstract description 20
- 230000008020 evaporation Effects 0.000 claims abstract description 20
- 230000002265 prevention Effects 0.000 claims description 14
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 22
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- 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
-
- 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
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioning system capable of preventing liquid carrying operation and a control method, wherein the air conditioning system comprises: an oil separator; a gas-liquid separator; and one end of the liquid-carrying-preventing operation pipeline is connected with the oil separator, and the other end of the liquid-carrying-preventing operation pipeline is connected with the gas-liquid separator and used for conveying the gaseous refrigerant flowing out of the oil separator to the gas-liquid separator so as to accelerate the evaporation of the refrigerant in the gas-liquid separator. The invention solves the problems that the system carries liquid when the electronic expansion valve of the unit is controlled to be invalid or the evaporation is poor in the prior art, and the liquid carrying operation is caused when the liquid stored in the condenser is carried into the compressor after the four-way valve is reversed, thereby preventing the risk of air suction and liquid carrying and improving the operation reliability of the unit.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioning system capable of preventing operation with liquid and a control method.
Background
The liquid-carrying operation phenomenon of the refrigerating system is always the main reason for influencing the reliability of the compressor, and the main occurrence process is as follows: 1. the unit is placed at low temperature for a long time and then is started at low pressure difference. 2. The unit is in the operation process of poor evaporation due to failure of the electronic expansion valve control or failure. 3. After the four-way valve is switched to the reverse direction, the liquid stored in the condenser is brought into the compressor to cause the liquid-carrying operation.
The liquid-carrying operation occurs in the above three stages, and the wear or damage of the compressor is easily caused. The conventional method at present deals with the first situation that an electric heating belt is arranged at an oil groove at the bottom of a compressor, and after the unit is placed for a long time, the unit is started to electrically heat the compressor to preheat the compressor, so that a refrigerant dissolved in lubricating oil is separated out; however, for the latter two cases, the reliability of the unit can only be guaranteed by alarming or stopping the unit.
Aiming at the problems that in the prior art, when the electronic expansion valve of the unit is controlled to be invalid or the evaporation is poor, the system carries liquid, and the liquid stored in the condenser is carried into the compressor after the four-way valve is reversed, so that the liquid carrying operation is caused, an effective solution is not provided at present.
Disclosure of Invention
The invention provides a liquid-carrying system which at least solves the problems that in the prior art, when the electronic expansion valve of a unit is controlled to be invalid or the evaporation is poor, the system carries liquid, and the liquid-carrying operation is caused when the liquid stored in a condenser is carried into a compressor after the four-way valve is reversed.
To solve the above technical problem, according to an aspect of an embodiment of the present invention, there is provided an air conditioning system including: an oil separator 1; a gas-liquid separator 2; and one end of the liquid-carrying-preventing operation pipeline is connected with the oil separator 1, and the other end of the liquid-carrying-preventing operation pipeline is connected with the gas-liquid separator 2 and used for conveying the gaseous refrigerant flowing out of the oil separator 1 to the gas-liquid separator 2 so as to accelerate the evaporation of the refrigerant in the gas-liquid separator 2.
Further, the liquid-carrying prevention operation pipeline exchanges heat with a heat exchange pipeline at the bottom of the condenser 3 through the bottom of the condenser 3.
Further, still include: and the throttling element 4 is positioned between the condenser 3 and the gas-liquid separator 2 and is used for throttling the refrigerant in the liquid-carrying-prevention operation pipeline.
Further, still include: and the electromagnetic valve 5 is positioned between the throttling element 4 and the gas-liquid separator 2 and is used for controlling the on-off of the refrigerant in the liquid-carrying-preventing operation pipeline.
Further, still include: and a check valve 6 between the oil separator 1 and the condenser 3.
According to another aspect of the embodiments of the present invention, there is provided an air conditioning system control method, applied to the air conditioning system, including: detecting the suction superheat degree of an air conditioning system; judging whether the suction superheat degree is less than or equal to a first preset value or not; if yes, the electromagnetic valve 5 of the liquid-carrying prevention operation pipeline is controlled to be opened, and the gaseous refrigerant flowing out of the oil separator 1 is conveyed to the gas-liquid separator 2 through the liquid-carrying prevention operation pipeline, so that evaporation of the refrigerant in the gas-liquid separator 2 is accelerated.
Further, before judging whether the degree of superheat of the intake air is less than or equal to the first preset value, the method further comprises the following steps: judging whether the suction superheat degree is less than or equal to a second preset value or not; wherein the second preset value is greater than the first preset value; if yes, the opening degree of the electronic expansion valve is adjusted, and the suction superheat degree is adjusted.
Further, judging whether the suction superheat degree is less than or equal to a first preset value or not comprises the following steps: judging whether the suction superheat degree is continuously less than or equal to a first preset value within preset time; judging whether the suction superheat degree is less than or equal to a second preset value or not, comprising the following steps of: and judging whether the suction superheat degree is continuously less than or equal to a second preset value within preset time.
Further, before detecting the suction superheat degree of the air conditioning system, the method further comprises the following steps: detecting whether the air conditioning system absorbs air and carries liquid; and if the air-conditioning system sucks air and carries liquid, triggering and detecting the suction superheat degree of the air-conditioning system.
Further, whether detect air conditioning system and inhale and take liquid includes: detecting whether one of the following conditions occurs in the air conditioning system: the electronic expansion valve is out of control, the heat exchange of the evaporator is abnormal, and the four-way reversing of the unit is realized; if yes, determining that the air conditioning system absorbs air and carries liquid.
According to still another aspect of an embodiment of the present invention, there is provided a storage medium containing computer-executable instructions for performing the air conditioning system control method as described above when executed by a computer processor.
The invention provides an air conditioning system which mainly comprises a liquid-carrying-prevention operation pipeline, wherein one end of the liquid-carrying-prevention operation pipeline is connected with an oil separator, and the other end of the liquid-carrying-prevention operation pipeline is connected with a gas-liquid separator and used for conveying gaseous refrigerants flowing out of the oil separator to the gas-liquid separator so as to accelerate evaporation of the refrigerants in the gas-liquid separator. By the method, the problems that in the prior art, liquid is carried in a system when the electronic expansion valve of the unit is out of control or the evaporation is poor, and liquid carrying operation is caused when liquid stored in the condenser is carried into the compressor after the four-way valve is reversed are effectively solved, the risk of air suction and liquid carrying is prevented, and the operation reliability of the unit is improved.
Drawings
Fig. 1 is a block diagram of an alternative configuration of an air conditioning system according to an embodiment of the present invention;
fig. 2 is an alternative flowchart of an air conditioning system control method according to an embodiment of the present invention.
Description of reference numerals:
1. an oil separator; 2. a gas-liquid separator; 3. a condenser; 4. a throttling element; 5. an electromagnetic valve; 6. a one-way valve; 7. a compressor; 8. an oil return electromagnetic valve; 9. an evaporator; 10. a first electronic expansion valve; 11. a first filter; 12. a second electronic expansion valve; 13. plate replacement; 14. a second filter; 15. a liquid separation head; 16. and a third electronic expansion valve.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Example 1
In a preferred embodiment 1 of the present invention, an air conditioning system is provided, and specifically, fig. 1 shows an alternative structural block diagram of the air conditioning system, and as shown in fig. 1, a main refrigerant flowing direction of the air conditioning system includes: an exhaust pipe of a compressor 7 passes through an oil separator 1, oil is separated, then the oil passes through a one-way valve 6 and then enters a condenser 3 through a four-way reversing valve, the oil passes through auxiliary elements such as plate exchange and then enters an electronic expansion valve for throttling, throttled gas-liquid mixed gas enters an evaporator, and heat-exchanged superheated gas enters a four-way reversing valve and then enters a gas-liquid separator 2 and then returns to the compressor 7.
On the basis of the air conditioning system, the invention is improved as follows:
and one end of the liquid-carrying-preventing operation pipeline is connected with the oil separator 1, and the other end of the liquid-carrying-preventing operation pipeline is connected with the gas-liquid separator 2 and used for conveying the gaseous refrigerant flowing out of the oil separator 1 to the gas-liquid separator 2 so as to accelerate the evaporation of the refrigerant in the gas-liquid separator 2.
In the above embodiment, an air conditioning system is provided, which mainly includes a liquid-carrying prevention operation pipeline, one end of the liquid-carrying prevention operation pipeline is connected to the oil separator, and the other end of the liquid-carrying prevention operation pipeline is connected to the gas-liquid separator, and is configured to convey a gaseous refrigerant flowing out of the oil separator to the gas-liquid separator, so as to accelerate evaporation of the refrigerant in the gas-liquid separator. By the method, the problems that in the prior art, liquid is carried in a system when the electronic expansion valve of the unit is out of control or the evaporation is poor, and liquid carrying operation is caused when liquid stored in the condenser is carried into the compressor after the four-way valve is reversed are effectively solved, the risk of air suction and liquid carrying is prevented, and the operation reliability of the unit is improved.
In a preferred embodiment of the invention, the liquid-carrying prevention operation pipeline passes through the bottom of the condenser 3 and exchanges heat with a heat exchange pipeline at the bottom of the condenser 3. Through exchanging heat with the condenser 3, the heating refrigerant is used for solving the problem of long-time liquid storage in the vapor under the refrigeration working condition when liquid is carried, and simultaneously, the problem that the bottom of the outer condenser 3 is not easy to defrost under the heating working condition can be solved.
Preferably, the system further comprises: and the throttling element 4 is positioned between the condenser 3 and the gas-liquid separator 2 and is used for throttling the refrigerant in the liquid-carrying-prevention operation pipeline.
Further, the system also includes: and the electromagnetic valve 5 is positioned between the throttling element 4 and the gas-liquid separator 2 and is used for controlling the on-off of the refrigerant in the liquid-carrying-preventing operation pipeline.
Optionally, the system further comprises: and a check valve 6 between the oil separator 1 and the condenser 3. The check valve 6 is used for preventing the refrigerant from flowing backwards, and the reliability of the system is improved.
Example 2
Based on the air conditioning system provided in preferred embodiment 1 of the present invention, in preferred embodiment 2 of the present invention, there is provided an air conditioning system control method, which can be directly applied to various air conditioning systems, and in particular, can be implemented by installing software in the air conditioning system or writing a corresponding program in a controller of the air conditioning system. In particular, fig. 2 shows an alternative flow chart of the method, which, as shown in fig. 2, comprises the following steps S202-S206:
s202: detecting the suction superheat degree of an air conditioning system;
s204: judging whether the suction superheat degree is less than or equal to a first preset value or not;
s206: if the refrigerant is evaporated, the electromagnetic valve of the liquid-carrying prevention operation pipeline is controlled to be opened, and the gaseous refrigerant flowing out of the oil separator is conveyed to the gas-liquid separator through the liquid-carrying prevention operation pipeline so as to accelerate the evaporation of the refrigerant in the gas-liquid separator.
In the above embodiment, a control method of an air conditioning system is provided, which mainly includes controlling an electromagnetic valve of a liquid-carrying prevention operation pipeline to open, and conveying gaseous refrigerant flowing out of an oil separator to a gas-liquid separator through the liquid-carrying prevention operation pipeline to accelerate evaporation of the refrigerant in the gas-liquid separator. By the method, the problems that in the prior art, liquid is carried in a system when the electronic expansion valve of the unit is out of control or the evaporation is poor, and liquid carrying operation is caused when liquid stored in the condenser is carried into the compressor after the four-way valve is reversed are effectively solved, the risk of air suction and liquid carrying is prevented, and the operation reliability of the unit is improved.
In a preferred embodiment of the present invention, before determining whether the degree of superheat of the intake air is less than or equal to the first preset value, the method further includes: judging whether the suction superheat degree is less than or equal to a second preset value or not; wherein the second preset value is greater than the first preset value; if yes, the opening degree of the electronic expansion valve is adjusted, and the suction superheat degree is adjusted.
Wherein, judge whether the superheat degree of breathing in is less than or equal to first preset value, include: judging whether the suction superheat degree is continuously less than or equal to a first preset value within preset time; judging whether the suction superheat degree is less than or equal to a second preset value or not, comprising the following steps of: and judging whether the suction superheat degree is continuously less than or equal to a second preset value within preset time.
Preferably, before detecting the suction superheat degree of the air conditioning system, the method further comprises the following steps: detecting whether the air conditioning system absorbs air and carries liquid; and if the air-conditioning system sucks air and carries liquid, triggering and detecting the suction superheat degree of the air-conditioning system.
Further, whether detect air conditioning system and inhale and take liquid includes: detecting whether one of the following conditions occurs in the air conditioning system: the electronic expansion valve is out of control, the heat exchange of the evaporator is abnormal, and the four-way reversing of the unit is realized; if yes, determining that the air conditioning system absorbs air and carries liquid.
When the electronic expansion valve is out of control or the heat exchange of the evaporator of the unit is abnormal or the four-way switching of the unit is carried out, after the air-conditioning system operates with liquid sucked, a large amount of liquid exists in a gas-liquid separator in the system, and when the compressor is started, the controller detects that the suction superheat degree suction temperature corresponding to the preset time suction superheat degree for 10min continuously and the saturation temperature corresponding to the suction pressure is less than or equal to Ti _ OFF +5 and corresponds to a second preset value, and the unit adjusts the opening of the electronic expansion valve by 5 steps/min. Meanwhile, the superheat degree is detected in real time, when the controller detects that the suction superheat degree is less than or equal to Ti _ OFF and corresponds to a first preset value for continuously 10min, the controller opens the control electromagnetic valve, high-temperature gas enters the gas-liquid separator through the condenser, the capillary tube and the electromagnetic valve, and the high-temperature superheated gas accelerates the evaporation of liquid in the gas-liquid separator, so that the problem of liquid entrainment in the suction gas is effectively solved.
When the unit heats, the outside is equivalent to an evaporator, and particularly when the ambient temperature is low in winter and the outside frosts, defrosting is needed, so that the bottom frost layer of the external condenser is thick, and the problem can be effectively solved by the method.
Example 3
Based on the air conditioning system control method provided in embodiment 1 above, there is also provided in preferred embodiment 3 of the present invention a storage medium containing computer-executable instructions for performing the air conditioning system control method as described above when executed by a computer processor.
In the above embodiment, a control method of an air conditioning system is provided, which mainly includes controlling an electromagnetic valve of a liquid-carrying prevention operation pipeline to open, and conveying gaseous refrigerant flowing out of an oil separator to a gas-liquid separator through the liquid-carrying prevention operation pipeline to accelerate evaporation of the refrigerant in the gas-liquid separator. By the method, the problems that in the prior art, liquid is carried in a system when the electronic expansion valve of the unit is out of control or the evaporation is poor, and liquid carrying operation is caused when liquid stored in the condenser is carried into the compressor after the four-way valve is reversed are effectively solved, the risk of air suction and liquid carrying is prevented, and the operation reliability of the unit is improved.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (11)
1. An air conditioning system, comprising:
an oil separator (1);
a gas-liquid separator (2);
and one end of the liquid-carrying-preventing operation pipeline is connected with the oil separator (1), the other end of the liquid-carrying-preventing operation pipeline is connected with the gas-liquid separator (2), and the liquid-carrying-preventing operation pipeline is used for conveying the gaseous refrigerant flowing out of the oil separator (1) to the gas-liquid separator (2) so as to accelerate evaporation of the refrigerant in the gas-liquid separator (2).
2. The system according to claim 1, characterized in that the liquid-carrying prevention operation line passes through the bottom of the condenser (3) to exchange heat with a heat exchange pipe at the bottom of the condenser (3).
3. The system of claim 2, further comprising:
and the throttling element (4) is positioned between the condenser (3) and the gas-liquid separator (2) and is used for throttling the refrigerant in the liquid-carrying-preventing operation pipeline.
4. The system of claim 3, further comprising:
and the electromagnetic valve (5) is positioned between the throttling element (4) and the gas-liquid separator (2) and is used for controlling the on-off of the refrigerant in the liquid-carrying-preventing operation pipeline.
5. The system of claim 2, further comprising:
a one-way valve (6) located between the oil separator (1) and the condenser (3).
6. An air conditioning system control method applied to the air conditioning system according to any one of claims 1 to 5, characterized by comprising:
detecting the suction superheat degree of the air conditioning system;
judging whether the suction superheat degree is less than or equal to a first preset value or not;
if yes, controlling an electromagnetic valve (5) of the liquid-carrying-prevention operation pipeline to be opened, and conveying the gaseous refrigerant flowing out of the oil separator (1) to the gas-liquid separator (2) through the liquid-carrying-prevention operation pipeline so as to accelerate evaporation of the refrigerant in the gas-liquid separator (2).
7. The method of claim 6, before determining whether the suction superheat is less than or equal to a first predetermined value, further comprising:
judging whether the suction superheat degree is less than or equal to a second preset value or not; wherein the second preset value is greater than the first preset value;
if yes, the opening degree of the electronic expansion valve is adjusted, and the suction superheat degree is adjusted.
8. The method of claim 7,
judging whether the suction superheat degree is less than or equal to a first preset value or not, comprising the following steps of: judging whether the suction superheat degree is continuously less than or equal to the first preset value within preset time;
judging whether the suction superheat degree is less than or equal to a second preset value or not, comprising the following steps of: and judging whether the suction superheat degree is continuously less than or equal to the second preset value within the preset time.
9. The method of claim 6, further comprising, prior to detecting a suction superheat of the air conditioning system:
detecting whether the air conditioning system absorbs air and carries liquid;
and triggering and detecting the suction superheat degree of the air conditioning system if the air conditioning system sucks air with liquid.
10. The method of claim 9, wherein detecting whether the air conditioning system is drawing air and carrying liquid comprises:
detecting whether one of the following conditions occurs in the air conditioning system: the electronic expansion valve is out of control, the heat exchange of the evaporator is abnormal, and the four-way reversing of the unit is realized;
if yes, determining that the air conditioning system absorbs air and carries liquid.
11. A storage medium containing computer-executable instructions for performing the air conditioning system control method of any one of claims 6 to 10 when executed by a computer processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010011489.8A CN111174457A (en) | 2020-01-06 | 2020-01-06 | Air conditioning system capable of preventing operation with liquid and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010011489.8A CN111174457A (en) | 2020-01-06 | 2020-01-06 | Air conditioning system capable of preventing operation with liquid and control method |
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| Publication Number | Publication Date |
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| CN111174457A true CN111174457A (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010011489.8A Pending CN111174457A (en) | 2020-01-06 | 2020-01-06 | Air conditioning system capable of preventing operation with liquid and control method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140093833A (en) * | 2013-01-18 | 2014-07-29 | 삼성전자주식회사 | Air Conditioner |
| CN104676845A (en) * | 2015-03-26 | 2015-06-03 | 广东美的暖通设备有限公司 | Multi-split system and control method thereof |
| CN105333660A (en) * | 2015-11-09 | 2016-02-17 | 南京天加空调设备有限公司 | Method for protecting compressor of multi-split air conditioning system |
| CN108362032A (en) * | 2018-04-04 | 2018-08-03 | 北京卡林新能源技术有限公司 | A kind of net for air-source heat pump units of continuous heat supply |
| CN109282542A (en) * | 2018-09-26 | 2019-01-29 | 珠海格力电器股份有限公司 | Defrosting device, heat pump unit and control method |
-
2020
- 2020-01-06 CN CN202010011489.8A patent/CN111174457A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140093833A (en) * | 2013-01-18 | 2014-07-29 | 삼성전자주식회사 | Air Conditioner |
| CN104676845A (en) * | 2015-03-26 | 2015-06-03 | 广东美的暖通设备有限公司 | Multi-split system and control method thereof |
| CN105333660A (en) * | 2015-11-09 | 2016-02-17 | 南京天加空调设备有限公司 | Method for protecting compressor of multi-split air conditioning system |
| CN108362032A (en) * | 2018-04-04 | 2018-08-03 | 北京卡林新能源技术有限公司 | A kind of net for air-source heat pump units of continuous heat supply |
| CN109282542A (en) * | 2018-09-26 | 2019-01-29 | 珠海格力电器股份有限公司 | Defrosting device, heat pump unit and control method |
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Application publication date: 20200519 |