CN114674095B - Air conditioner, method and device for controlling air conditioner refrigerant and storage medium - Google Patents
Air conditioner, method and device for controlling air conditioner refrigerant and storage medium Download PDFInfo
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- CN114674095B CN114674095B CN202210257160.9A CN202210257160A CN114674095B CN 114674095 B CN114674095 B CN 114674095B CN 202210257160 A CN202210257160 A CN 202210257160A CN 114674095 B CN114674095 B CN 114674095B
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 264
- 238000003860 storage Methods 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000005494 condensation Effects 0.000 claims abstract description 96
- 238000009833 condensation Methods 0.000 claims abstract description 96
- 238000004378 air conditioning Methods 0.000 claims description 10
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 7
- 238000005336 cracking Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
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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
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- 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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
-
- 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
- F25B49/022—Compressor control arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application relates to the technical field of air conditioners, and discloses a method for controlling air conditioner refrigerants, which comprises the following steps: an air conditioner comprises a condensation circulation pipeline formed by a compressor, a first electric stop valve, an outdoor heat exchanger, a throttling device, an indoor heat exchanger and a first one-way valve which are connected in sequence, and further comprises: the inlet end of the two-position three-way valve is connected with the exhaust port of the compressor, and the first outlet end of the two-position three-way valve is connected with the outdoor heat exchanger through the first electric stop valve; the inlet end of the refrigerant storage pipeline is connected with the second outlet end of the two-position three-way valve, and the outlet end of the refrigerant storage pipeline is connected with a pipeline between a throttling device of the condensation circulation pipeline and the indoor heat exchanger; when the air conditioner is started, releasing the refrigerant to the condensation circulating pipeline, and then starting the compressor; when the air conditioner is shut down, the refrigerant is recovered from the condensation circulation pipeline, and then the compressor is closed. So as to reduce the volume expansion of the refrigerant in the cold state and avoid the cracking of the liquid inlet and outlet pipe and the leakage of the refrigerant. The application also discloses a device for controlling the air conditioner refrigerant and a storage medium.
Description
Technical Field
The present application relates to the field of air conditioning technology, and for example, to an air conditioner, a method, an apparatus and a storage medium for controlling a refrigerant of the air conditioner.
Background
At present, in the working process of an air conditioner in the market, an inner machine and an outer machine are connected through a compressor, and refrigeration and heating are achieved through the transmission of a refrigerant. When the air conditioner does not work, the refrigerant is in a static state in the liquid inlet and outlet pipe, at the moment, the refrigerant presents a gas-liquid coexisting state in the liquid inlet and outlet pipe, when the air conditioner is cold, the refrigerant can appear in an icing state when encountering cold, and presents a solid state, at the moment, the volume of the refrigerant becomes large, and the joint part of the liquid inlet and outlet pipe is easily expanded by the refrigerant in the icing state. The refrigerant is leaked, and the safety accident is caused.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.
The embodiment of the disclosure provides an air conditioner, a method, a device and a storage medium for controlling air conditioner refrigerants, so as to reduce the volume expansion of the refrigerants in a chilled state and avoid the rupture of a liquid inlet pipe and the leakage of the refrigerants.
In some embodiments, the air conditioner includes a condensation circulation line 2 formed by sequentially connecting a compressor 10, a first electric shut-off valve 31, an outdoor heat exchanger 40, a throttling device 50, an indoor heat exchanger 70, and a first check valve 61, and further includes: the two-position three-way valve 20, the inlet end of which is connected with the exhaust port of the compressor 10, and the first outlet end of which is connected with the outdoor heat exchanger 40 through the first electric stop valve 31; the inlet end of the refrigerant storage pipeline 1 is connected with the second outlet end of the two-position three-way valve 20, and the outlet end of the refrigerant storage pipeline is connected with a pipeline between the throttling device 50 of the condensation circulation pipeline 2 and the indoor heat exchanger 70; when the air conditioner is started, the refrigerant storage pipeline 1 is controlled to be in a state of releasing the refrigerant, the refrigerant is released to the condensation circulation pipeline 2, and the compressor 10 is started again; when the air conditioner is shut down, the refrigerant storage pipeline 1 is controlled to be in a state of recovering the refrigerant, the refrigerant is recovered from the condensation circulation pipeline 2, and then the compressor 10 is closed.
Optionally, the refrigerant storage pipe 1 includes: a refrigerant bin 90 connected to the second outlet end of the two-position three-way valve 20 and configured to store a refrigerant; a second electric shut-off valve 32 having a first end connected to an outlet end of the refrigerant chamber 90 and configured to cause the refrigerant storage line 1 to be in a refrigerant releasing state in a controlled on state and to cause the refrigerant storage line 1 to be in a refrigerant recovering state in a controlled off state;
The second check valve 62 has a first end connected to the second end of the second electric shut-off valve 32, and a second end connected to a refrigerant line between the throttle device 50 and the indoor heat exchanger 70, and is configured to release the refrigerant to the condensation cycle line 2 in one direction.
Optionally, the air conditioner further includes: the controller is configured to control the two-position three-way valve 20 to be connected with the condensation circulation pipeline 2 according to the pressure parameter, and start the compressor 10 when the controller receives a startup instruction of the air conditioner indoor unit, the refrigerant storage pipeline 1 is in a state of releasing the refrigerant, and the refrigerant storage pipeline 1 releases the refrigerant; the compressor 10 operates to keep the refrigerant circulating in the condensation circulation pipeline 2; when an instruction of an indoor unit of the air conditioner is received or the pressure of the condensation circulation pipeline 2 is abnormally increased, the refrigerant storage pipeline 1 is in a state of recovering the refrigerant, the two-position three-way valve 20 is controlled to be connected with the refrigerant storage pipeline 1 according to the pressure parameter, the refrigerant storage pipeline 1 is controlled to recover the refrigerant according to the pressure parameter, and the compressor 10 is closed.
Optionally, the air conditioner further includes: a first pressure sensor 81 electrically connected to the controller, provided at a rear end of the first check valve 61, configured to detect a first pressure parameter between the first check valve 61 and the compressor 10; a second pressure sensor 82, electrically connected to the controller, disposed at the front end of the first check valve 61, configured to detect a second pressure parameter between the indoor heat exchanger 70 and the first check valve 61; the third pressure sensor 83, electrically connected to the controller, is disposed at an inlet end of the refrigerant bin 90, and is configured to detect a third pressure parameter between the refrigerant bin 90 and the two-position three-way valve 20.
In some embodiments, the method for controlling an air conditioning refrigerant includes: when a startup instruction of an air conditioner indoor unit is received, the refrigerant storage pipeline is in a state of releasing the refrigerant, the refrigerant storage pipeline releases the refrigerant, and the two-position three-way valve is controlled to be connected with the condensation circulation pipeline according to the pressure parameter, so that the compressor is started; the compressor operates to keep the refrigerant circulating in the condensation circulating pipeline; when an instruction of closing the air conditioner or abnormal increase of the pressure of the condensation circulation pipeline is received, the refrigerant storage pipeline is in a state of recovering the refrigerant, the two-position three-way valve is controlled to be connected with the refrigerant storage pipeline according to the pressure parameter, the refrigerant storage pipeline is controlled to recover the refrigerant according to the pressure parameter, and the compressor is closed.
Optionally, the refrigerant storage pipeline releases the refrigerant, including: opening a second electric stop valve in the refrigerant storage pipeline and a first electric stop valve in the condensation circulation pipeline; releasing the refrigerant in the refrigerant storage pipeline.
Optionally, the controlling the two-position three-way valve according to the pressure parameter is connected with the condensation circulation pipeline, and includes: judging whether the second pressure parameter of the condensation circulation pipeline is smaller than a fourth threshold value PL0, if the second pressure parameter is smaller than the fourth threshold value PL0, powering on the two-position three-way valve, otherwise judging the first pressure parameter; judging whether the first pressure parameter is continuously reduced, if the first pressure parameter meets the conditions, continuously releasing the refrigerant from the refrigerant bin, and if the first pressure parameter meets the conditions, powering on the two-position three-way valve; the two-position three-way valve is electrified, so that the exhaust port of the compressor is connected with the input end of the condensation circulation pipeline.
Optionally, the maintaining refrigerant circulates in the condensation circulation pipeline, including: the exhaust port of the compressor is kept to be connected with the input end of the condensation circulating pipeline; the first electric shut-off valve in the condensation circulation line is kept in an open state.
Optionally, the controlling the two-position three-way valve according to the pressure parameter is connected with a refrigerant storage pipeline, and includes: closing a second electric stop valve in the refrigerant storage pipeline and a first electric stop valve in the condensation circulation pipeline; judging whether a second pressure sensor of the condensation circulation pipeline is larger than a first threshold PH0, if so, keeping the compressor running, otherwise, shutting down the compressor; judging whether the first pressure parameter is larger than a second threshold PH1, if the first pressure parameter meets the condition, executing the power failure of the two-position three-way valve, otherwise judging whether the first pressure parameter is continuously increased; judging whether the first pressure parameter is continuously increased, if the first pressure parameter meets the condition, keeping the compressor running, otherwise, shutting down the compressor; the two-position three-way valve is powered off, so that the exhaust port of the compressor is connected with the input end of the refrigerant storage pipeline.
Optionally, the controlling the refrigerant storage pipeline to recover the refrigerant according to the pressure parameter includes: the refrigerant bin receives the refrigerant in the condensation circulation pipeline; judging whether the third pressure parameter is larger than a third threshold PH2, if the condition is met, shutting down the compressor, otherwise judging whether the third pressure parameter is continuously increased; judging whether the third pressure parameter is continuously increased, if the third pressure parameter meets the condition, keeping the refrigerant bin to receive the refrigerant in the condensation circulation pipeline, and otherwise, shutting down the compressor.
Optionally, the first threshold PH0 is greater than the fourth threshold PL0.
In some embodiments, the apparatus for controlling an air conditioning refrigerant includes: the air conditioner comprises a processor and a memory storing program instructions, wherein the processor is configured to execute the method for controlling the air conditioner refrigerant when the program instructions are executed.
In some embodiments, the storage medium includes: program instructions are stored, and when the program instructions are run, the method for controlling the air conditioner coolant is executed.
The method for controlling the air conditioner refrigerant, the device for controlling the air conditioner refrigerant and the storage medium provided by the embodiment of the disclosure can realize the following technical effects:
The two-position three-way valve is used for controlling the refrigerant to circulate in the refrigerant storage pipeline and the condensation circulation pipeline. When the air conditioner indoor unit is started, the refrigerant is released from the refrigerant storage pipeline to the condensation circulation pipeline, and then the compressor is started, and when the air conditioner indoor unit is shut down, the refrigerant storage pipeline firstly recovers the refrigerant from the condensation circulation pipeline, and then the compressor is shut down. Therefore, the residual refrigerant in the pipeline can be reduced, so that the volume expansion of the refrigerant in a chilled state is reduced, and the cracking of the liquid inlet and outlet pipe and the leakage of the refrigerant are avoided.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:
FIG. 1 is a schematic view of a refrigerant control structure according to an embodiment of the present disclosure;
FIG. 2 is a flow chart for refrigerant control provided by an embodiment of the present disclosure;
FIG. 3a is a flow chart for releasing refrigerant provided by an embodiment of the present disclosure;
FIG. 3b is a schematic diagram of a structure for releasing refrigerant according to an embodiment of the present disclosure;
FIG. 4a is a flow chart for recovering refrigerant provided by an embodiment of the present disclosure;
FIG. 4b is a schematic view of a structure for recovering refrigerant according to an embodiment of the present disclosure;
fig. 5 is a schematic view of an apparatus for refrigerant control according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.
The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The term "plurality" means two or more, unless otherwise indicated.
In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.
The term "corresponding" may refer to an association or binding relationship, and the correspondence between a and B refers to an association or binding relationship between a and B.
Referring to fig. 1, a schematic diagram of a refrigerant control structure according to an embodiment of the present disclosure includes:
the refrigerant control is composed of a refrigerant storage pipeline 1, a condensation circulating pipeline 2 and a two-position three-way valve 20 connected with the refrigerant storage pipeline 1 and the condensation circulating pipeline 2.
The condensation circulation line 2 is constituted by a compressor 10, a first electric shutoff valve 31, an outdoor heat exchanger 40, a throttle device 50, an indoor heat exchanger 70, and a first check valve 61 in the order of connection. Also included between the compressor 10 and the first electric shut-off valve 31 is: the two-position three-way valve 20, the inlet end of which is connected with the exhaust port of the compressor 10, and the first outlet end of which is connected with the outdoor heat exchanger 40 through the first electric stop valve 31;
The inlet end of the refrigerant storage pipeline 1 is connected with the second outlet end of the two-position three-way valve 20, and the outlet end is connected with a pipeline between the throttling device 50 of the condensation circulation pipeline 2 and the indoor heat exchanger 70; wherein, the refrigerant bin 90 is connected with the second outlet end of the two-position three-way valve 20; the first end of the second electric stop valve 32 is connected with the outlet end of the refrigerant bin 90; the second check valve 62 has a first end connected to the second end of the second electric shut-off valve 32, and a second end connected to a refrigerant line between the throttle device 50 and the indoor heat exchanger 70.
In addition, a first pressure sensor 81 is provided at the rear end of the first check valve 61, configured to detect a first pressure parameter between the first check valve 61 and the compressor 10; the second pressure sensor 82 is disposed at the front end of the first check valve 61 and configured to detect a second pressure parameter between the indoor heat exchanger 70 and the first check valve 61; the third pressure sensor 83 is disposed at an inlet end of the refrigerant bin 90 and configured to detect a third pressure parameter between the refrigerant bin 90 and the two-position three-way valve 20.
A refrigerant storage pipeline 1 is added to the existing condensation circulation pipeline 2 through a two-position three-way valve 20. When the air conditioner is started, the refrigerant storage pipeline 1 releases the refrigerant to the condensation circulation pipeline 2, and the two-position three-way valve 20 is connected with the condensation circulation pipeline 2 according to the values of the first pressure parameter and the second pressure parameter and starts the compressor 10. When the air conditioner is turned off, the refrigerant storage pipeline 1 recovers the refrigerant from the condensation circulation pipeline 2, and the two-position three-way valve 20 is connected with the refrigerant storage pipeline 1 and the compressor 10 is closed according to the values of the first pressure parameter, the second pressure parameter and the third pressure parameter. The structure can realize the release of the refrigerant when the air conditioner indoor unit is started and the recovery of the refrigerant when the air conditioner indoor unit is shut down through the two-position three-way valve 20.
The air conditioner further comprises a controller (not marked in the figure), and the controller is used for executing the method for controlling the air conditioner refrigerant provided by the embodiment of the application.
The controller is configured to control the two-position three-way valve 20 to be connected with the condensation circulation pipeline 2 according to the pressure parameter, and start the compressor 10 when the controller receives a startup instruction of the air conditioner indoor unit, the refrigerant storage pipeline 1 is in a state of releasing the refrigerant, and the refrigerant storage pipeline 1 releases the refrigerant; the compressor 10 operates to keep the refrigerant circulating in the condensation circulation pipeline 2; when an instruction of an indoor unit of the air conditioner is received or the pressure of the condensation circulation pipeline 2 is abnormally increased, the refrigerant storage pipeline 1 is in a state of recovering the refrigerant, the two-position three-way valve 20 is controlled to be connected with the refrigerant storage pipeline 1 according to the pressure parameter, the refrigerant storage pipeline 1 is controlled to recover the refrigerant according to the pressure parameter, and the compressor 10 is closed.
Referring to fig. 2, a flow chart for controlling a refrigerant according to an embodiment of the present disclosure includes:
And S01, when a starting instruction of the air conditioner indoor unit is received, the refrigerant storage pipeline is in a state of releasing the refrigerant, the refrigerant storage pipeline releases the refrigerant, and the two-position three-way valve is controlled to be connected with the condensation circulation pipeline according to the pressure parameter, so that the compressor is started.
S02, the compressor operates, and the refrigerant is kept to circulate in the condensation circulation pipeline.
S03, when receiving an indoor unit closing instruction of the air conditioner, the refrigerant storage pipeline is in a refrigerant recovery state, the two-position three-way valve is controlled to be connected with the refrigerant storage pipeline according to the pressure parameter, the refrigerant storage pipeline is controlled to recover the refrigerant according to the pressure parameter, and the compressor is closed.
Thus, when the startup instruction of the air conditioner indoor unit is received, the refrigerant storage pipeline releases the refrigerant to the condensation circulation pipeline, the two-position three-way valve is controlled to be connected with the condensation circulation pipeline according to the value of the pressure parameter, and then the compressor is started. When the machine is turned off, the two-position three-way valve is controlled to be connected with the refrigerant storage pipeline according to the pressure parameter, the refrigerant storage pipeline is controlled to recycle the refrigerant according to the pressure parameter, and then the compressor is turned off. Therefore, after the refrigerant is used, the refrigerant residue in the refrigerant storage pipeline and the condensation circulation pipeline can be reduced.
Optionally, in step S01, the refrigerant storage pipeline releases the refrigerant, including: opening a second electric stop valve in the refrigerant storage pipeline and a first electric stop valve in the condensation circulation pipeline; releasing the refrigerant in the refrigerant storage pipeline.
In this way, the second electric stop valve in the refrigerant storage pipeline is opened so as to release the refrigerant to the condensation circulation pipeline, and the first electric stop valve in the condensation circulation pipeline is opened so that the refrigerant can circulate in the condensation circulation pipeline.
Optionally, in step S01, the controlling the two-position three-way valve according to the pressure parameter is connected to the condensation circulation pipeline, including: judging whether the second pressure parameter of the condensation circulation pipeline is smaller than a fourth threshold value PL0, if the second pressure parameter is smaller than the fourth threshold value PL0, powering on the two-position three-way valve, otherwise, judging the first pressure parameter; judging whether the first pressure parameter is continuously reduced, if the first pressure parameter meets the conditions, continuously releasing the refrigerant from the refrigerant bin, and if the first pressure parameter meets the conditions, powering on the two-position three-way valve; the two-position three-way valve is electrified, so that the exhaust port of the compressor is connected with the input end of the condensation circulation pipeline.
When the second pressure parameter is smaller than the fourth threshold value PL0 and the first pressure parameter continues to decrease, the pipeline leading to the compressor is unblocked, the refrigerant can reach the compressor, and the two-position three-way valve is connected to the input end of the condensation circulation pipeline, so that the refrigerant can circulate in the condensation circulation pipeline.
Optionally, in step S02, the maintaining refrigerant circulates in the condensation circulation pipeline, including: the exhaust port of the compressor is kept to be connected with the input end of the condensation circulating pipeline; the first electric shut-off valve in the condensation circulation line is kept in an open state.
Therefore, when the compressor works, the exhaust port of the compressor is kept to be connected with the input end of the condensation circulation pipeline, and the first electric stop valve in the condensation circulation pipeline is kept to be in an open state, so that the refrigerant can circulate in the condensation circulation pipeline.
Optionally, in step S03, the controlling the two-position three-way valve according to the pressure parameter is connected to the refrigerant storage pipeline, including: closing a second electric stop valve in the refrigerant storage pipeline and a first electric stop valve in the condensation circulation pipeline; judging whether the second pressure parameter of the condensation circulation pipeline is greater than a first threshold PH0, if so, keeping the compressor running, otherwise, shutting down the compressor; judging whether the first pressure parameter is larger than a second threshold PH1, if the first pressure parameter meets the condition, executing the power failure of the two-position three-way valve, otherwise judging whether the first pressure parameter is continuously increased; judging whether the first pressure parameter is continuously increased, if the first pressure parameter meets the condition, keeping the compressor running, otherwise, shutting down the compressor; the two-position three-way valve is powered off, so that the exhaust port of the compressor is connected with the input end of the refrigerant storage pipeline.
In this way, the first electric stop valve in the condensation circulation pipeline is closed, the condensation circulation pipeline is cut off, and when the second pressure parameter and the first pressure parameter exceed the threshold value and the first pressure parameter continuously rises, the condensation circulation pipeline has enough pressure, so that the two-position three-way valve is powered off, and the exhaust port of the compressor is connected with the input end of the refrigerant storage pipeline so as to press the refrigerant into the refrigerant storage pipeline.
Optionally, in step S03, the controlling the refrigerant storage pipeline to recover the refrigerant according to the pressure parameter includes: the refrigerant bin receives the refrigerant in the condensation circulation pipeline; judging whether the third pressure parameter is larger than a third threshold PH2, if the condition is met, shutting down the compressor, otherwise judging whether the third pressure parameter is continuously increased; judging whether the third pressure parameter is continuously increased, if the third pressure parameter meets the condition, keeping the refrigerant bin to receive the refrigerant in the condensation circulation pipeline, and otherwise, shutting down the compressor.
Therefore, the second electric stop valve in the refrigerant storage pipeline is closed, so that the refrigerant storage pipeline is cut off, and when the third pressure parameter continuously rises, the refrigerant in the condensation circulation pipeline can be pressed into the refrigerant bin of the refrigerant storage pipeline.
Alternatively, the first threshold PH0 is greater than the fourth threshold PL0.
Thus, for the same pressure sensor, the pressure required when releasing the refrigerant is different from the pressure required when collecting the refrigerant, so that the refrigerant can be effectively utilized and recovered.
Referring to fig. 3a, a flow chart for releasing a refrigerant according to an embodiment of the present disclosure is provided, and fig. 3b, a schematic structural diagram for releasing a refrigerant according to an embodiment of the present disclosure includes:
S100, starting the air conditioner indoor unit.
S101, the compressor is not started temporarily.
S102, opening a second electric stop valve in the refrigerant storage pipeline and a first electric stop valve in the condensation circulation pipeline.
S103, releasing the refrigerant in the refrigerant storage pipeline. As shown in fig. 3b, the refrigerant in the refrigerant storage line 1 in the refrigerant chamber 90 is discharged to the condensation cycle line 2 along a dotted line.
S104, judging whether the second pressure parameter is smaller than the fourth threshold PH0, if yes, executing step S106, otherwise executing step S105.
S105, judging whether the first pressure parameter continues to be reduced, if the condition is met, returning to the step S103, otherwise, executing the step S106.
And S106, the two-position three-way valve is electrified, so that an exhaust port of the compressor is connected with the input end of the condensation circulation pipeline. As shown in fig. 3b, after the two-position three-way valve is powered on, the exhaust port of the compressor 10 is connected to the input end of the condensation circulation pipeline 2.
S107, starting the compressor.
Referring to fig. 4a, a flow chart for recovering a refrigerant according to an embodiment of the present disclosure is provided, and fig. 4b, a schematic structural diagram for recovering a refrigerant according to an embodiment of the present disclosure includes:
S200, shutting down the air conditioner indoor unit.
S201, closing a second electric stop valve in the refrigerant storage pipeline and a first electric stop valve in the condensation circulation pipeline.
S202, judging whether the second pressure sensor is greater than the first threshold PH0, if the condition is met, executing step S203, otherwise executing step S210.
And S203, the compressor continues to run. As shown in fig. 4b, the refrigerant circulates in the condensation circulation line 2 along the dotted line.
S204, judging whether the first pressure sensor is greater than the second threshold PH1, if yes, executing step S206, otherwise executing step S205.
S205, determining whether the first pressure sensor continues to rise, if the condition is satisfied, returning to step S203, otherwise executing step S210.
S206, the two-position three-way valve is powered off, so that an exhaust port of the compressor is connected with an input end of the refrigerant storage pipeline. As shown in fig. 4b, the two-position three-way valve 20 is powered off, so that the discharge port of the compressor 10 is connected to the input end of the refrigerant storage line 1.
S207, the refrigerant bin receives the refrigerant in the condensation circulation pipeline. As shown in fig. 4b, the refrigerant is pushed into the refrigerant storage pipe 1 along the broken line into the refrigerant chamber 90.
S208, it is determined whether the third pressure sensor is greater than the third threshold PH2, if the condition is satisfied, step S210 is executed, otherwise step S209 is executed.
S209, determining whether the third pressure sensor continues to rise, if the condition is satisfied, returning to step S207, otherwise, executing step S210.
S210, the compressor is shut down.
Referring to fig. 5, an embodiment of the present disclosure provides an apparatus for controlling an air conditioning refrigerant, including a processor (processor) 100 and a memory (memory) 101. Optionally, the apparatus may further comprise a communication interface (Communication Interface) 102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via the bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call logic instructions in the memory 101 to perform the method for controlling an air conditioning refrigerant of the above-described embodiment.
Further, the logic instructions in the memory 101 described above may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand alone product.
The memory 101 is used as a storage medium for storing a software program, a computer executable program, and program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes the program instructions/modules stored in the memory 101 to perform functional applications and data processing, i.e., to implement the method for controlling the air conditioning refrigerant in the above-described embodiments.
The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created according to the use of the terminal device, etc. Further, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure provides a product (such as a computer and the like) comprising the device for controlling the air conditioner refrigerant.
Embodiments of the present disclosure provide a storage medium storing computer-executable instructions configured to perform the above-described method for controlling an air conditioning refrigerant.
The storage medium may be a transitory computer readable storage medium or a non-transitory computer readable storage medium.
Embodiments of the present disclosure may be embodied in a software product stored on a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of a method according to embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium including: a variety of media capable of storing program codes, such as a mobile hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), and the like, and also may be a transitory storage medium.
The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (the) are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this disclosure is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, when used in the present disclosure, the terms "comprises," "comprising," and/or variations thereof, mean that the recited features, integers, steps, operations, elements, and/or components are present, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus that includes the element. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.
Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the embodiments disclosed herein, the disclosed methods, articles of manufacture (including but not limited to devices, apparatuses, etc.) may be practiced in other ways. For example, the device embodiments described above are merely illustrative.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (9)
1. A method for controlling a refrigerant of an air conditioner, the air conditioner comprising: the condensation circulation pipeline that compressor, first electronic stop valve, outdoor heat exchanger, throttling arrangement, indoor heat exchanger, first check valve that connect in proper order constitute still includes:
the inlet end of the two-position three-way valve is connected with the exhaust port of the compressor, and the first outlet end of the two-position three-way valve is connected with the outdoor heat exchanger through the first electric stop valve;
the inlet end of the refrigerant storage pipeline is connected with the second outlet end of the two-position three-way valve, and the outlet end of the refrigerant storage pipeline is connected with a pipeline between a throttling device of the condensation circulation pipeline and the indoor heat exchanger;
The first pressure sensor is electrically connected with the controller, is arranged at the rear end of the first one-way valve and is configured to detect a first pressure parameter between the first one-way valve and the compressor;
the second pressure sensor is electrically connected with the controller, is arranged at the front end of the first one-way valve and is configured to detect a second pressure parameter between the indoor heat exchanger and the first one-way valve;
When the air conditioner is started, the refrigerant storage pipeline is controlled to be in a state of releasing the refrigerant, the refrigerant is released to the condensation circulation pipeline, and the compressor is started again; when the air conditioner is shut down, the refrigerant storage pipeline is controlled to be in a state of recovering the refrigerant, the refrigerant is recovered from the condensation circulation pipeline, and then the compressor is closed;
wherein, refrigerant storage pipeline includes:
The refrigerant bin is connected with the second outlet end of the two-position three-way valve and is configured to store refrigerant;
The second electric stop valve is connected with the outlet end of the refrigerant bin at the first end and is configured to enable the refrigerant storage pipeline to be in a refrigerant releasing state in a controlled conduction state and enable the refrigerant storage pipeline to be in a refrigerant recovering state in a controlled cut-off state;
the first end of the second one-way valve is connected with the second end of the second electric stop valve, the second end of the second one-way valve is connected with a refrigerant pipeline between the throttling device and the indoor heat exchanger and is configured to release refrigerant to the condensation circulation pipeline in a one-way manner;
The method comprises the following steps:
When a startup instruction of an air conditioner indoor unit is received, the refrigerant storage pipeline is in a state of releasing the refrigerant, the refrigerant storage pipeline releases the refrigerant, and the two-position three-way valve is controlled to be connected with the condensation circulation pipeline according to the pressure parameter, so that the compressor is started;
the compressor operates to keep the refrigerant circulating in the condensation circulating pipeline;
When an instruction of closing the air conditioner or abnormal increase of the pressure of the condensation circulation pipeline is received, the refrigerant storage pipeline is in a state of recovering the refrigerant, a two-position three-way valve is controlled to be connected with the refrigerant storage pipeline according to the pressure parameter, the refrigerant storage pipeline is controlled to recover the refrigerant according to the pressure parameter, and the compressor is closed;
Wherein, refrigerant storage pipeline release refrigerant includes:
Opening a second electric stop valve in the refrigerant storage pipeline and a first electric stop valve in the condensation circulation pipeline;
Releasing the refrigerant in the refrigerant storage pipeline;
Wherein, control two-position three-way valve according to pressure parameter and be connected with condensation circulation pipeline, include:
judging whether the second pressure parameter of the condensation circulation pipeline is smaller than a fourth threshold value PL0, if the second pressure parameter is smaller than the fourth threshold value PL0, powering on the two-position three-way valve, otherwise, judging the first pressure parameter;
judging whether the first pressure parameter is continuously reduced, if the first pressure parameter meets the conditions, continuously releasing the refrigerant from the refrigerant bin, and if the first pressure parameter meets the conditions, powering on the two-position three-way valve;
The two-position three-way valve is electrified, so that the exhaust port of the compressor is connected with the input end of the condensation circulation pipeline.
2. The method of claim 1, wherein the air conditioner further comprises:
the controller is configured to control the two-position three-way valve to be connected with the condensation circulation pipeline according to the pressure parameter, and start the compressor when the controller receives a startup instruction of the air conditioner indoor unit and the refrigerant storage pipeline is in a state of releasing the refrigerant; the compressor operates to keep the refrigerant circulating in the condensation circulating pipeline; when an instruction of closing the air conditioner or abnormal increase of the pressure of the condensation circulation pipeline is received, the refrigerant storage pipeline is in a state of recovering the refrigerant, the two-position three-way valve is controlled to be connected with the refrigerant storage pipeline according to the pressure parameter, the refrigerant storage pipeline is controlled to recover the refrigerant according to the pressure parameter, and the compressor is closed.
3. The method of claim 1, wherein the air conditioner further comprises:
And the third pressure sensor is electrically connected with the controller, is arranged at the inlet end of the refrigerant bin and is configured to detect a third pressure parameter between the refrigerant bin and the two-position three-way valve.
4. The method of claim 1, wherein the retaining refrigerant circulates in a condensing circulation line, comprising:
The exhaust port of the compressor is kept to be connected with the input end of the condensation circulating pipeline;
The first electric shut-off valve in the condensation circulation line is kept in an open state.
5. The method of claim 1, wherein said controlling the two-position three-way valve to connect with the refrigerant storage line based on the pressure parameter comprises:
closing a second electric stop valve in the refrigerant storage pipeline and a first electric stop valve in the condensation circulation pipeline;
Judging whether the second pressure parameter of the condensation circulation pipeline is greater than a first threshold PH0, if so, keeping the compressor running, otherwise, shutting down the compressor;
Judging whether the first pressure parameter is larger than a second threshold PH1, if the first pressure parameter meets the condition, executing the power failure of the two-position three-way valve, otherwise judging whether the first pressure parameter is continuously increased;
Judging whether the first pressure parameter is continuously increased, if the first pressure parameter meets the condition, keeping the compressor running, otherwise, shutting down the compressor;
the two-position three-way valve is powered off, so that the exhaust port of the compressor is connected with the input end of the refrigerant storage pipeline.
6. The method of claim 3, wherein controlling the refrigerant storage line to recover refrigerant based on the pressure parameter comprises:
the refrigerant bin receives the refrigerant in the condensation circulation pipeline;
judging whether the third pressure parameter is larger than a third threshold PH2, if the condition is met, shutting down the compressor, otherwise judging whether the third pressure parameter is continuously increased;
Judging whether the third pressure parameter is continuously increased, if the third pressure parameter meets the condition, keeping the refrigerant bin to receive the refrigerant in the condensation circulation pipeline, and otherwise, shutting down the compressor.
7. The method of claim 1, wherein the first threshold PH0 is greater than the fourth threshold PL0.
8. An apparatus for controlling an air conditioning refrigerant comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for controlling an air conditioning refrigerant according to any one of claims 1 to 7 when the program instructions are executed.
9. A storage medium storing program instructions which, when executed, perform the method for controlling an air conditioning refrigerant according to any one of claims 1 to 7.
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