CN114593515A - Method and device for controlling multi-split system and multi-split system - Google Patents
Method and device for controlling multi-split system and multi-split system Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 59
- 239000003507 refrigerant Substances 0.000 claims abstract description 133
- 238000010438 heat treatment Methods 0.000 claims abstract description 55
- 238000001514 detection method Methods 0.000 claims abstract description 52
- 238000012937 correction Methods 0.000 claims abstract description 36
- 230000001276 controlling effect Effects 0.000 claims description 78
- 239000007788 liquid Substances 0.000 claims description 32
- 238000004378 air conditioning Methods 0.000 claims description 17
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 15
- 238000010586 diagram Methods 0.000 description 12
- 230000006870 function Effects 0.000 description 11
- 238000004891 communication Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000008236 heating water Substances 0.000 description 5
- 238000004590 computer program Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
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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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- 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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- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application relates to the technical field of air conditioners and discloses a method for controlling a multi-split air conditioner system. The multi-split air conditioner system at least comprises a first heat exchange assembly and a second heat exchange assembly which are used for adjusting indoor temperature, and the second heat exchange assembly is provided with an electronic expansion valve which is used for adjusting the flow of a refrigerant in a pipeline where the second heat exchange assembly is located; the method comprises the steps of responding to a heating operation instruction of a first heat exchange assembly, and acquiring leakage detection information of an electronic expansion valve associated with a second heat exchange assembly; and controlling the electronic expansion valve to execute opening correction operation under the condition that the leakage detection information indicates that the refrigerant flows through the second heat exchange assembly. According to the electronic expansion valve, the opening correction operation is executed, so that the electronic expansion valve can be in a closed state, the refrigerant is prevented from being leaked to the second heat exchange assembly in a non-operation state, and the temperature adjusting effect of the first heat exchange assembly in a heating operation state on the indoor environment is guaranteed. The application also discloses a device for controlling the multi-split system and the multi-split system.
Description
Technical Field
The present application relates to the field of air conditioning technologies, and in particular, to a method and an apparatus for controlling a multi-split system, and a multi-split system.
Background
In recent years, as the living standard of people is improved, the requirement for the comfort level of the indoor environment is higher and higher, and the air conditioner of the multi-split air conditioner is favored by people. Generally, a multi-split system includes one outdoor heat exchanger and a plurality of indoor heat exchangers; the indoor heat exchangers can be arranged in different spaces to adjust the temperature of the different spaces, and the indoor heat exchangers can also be arranged in the same space to adjust the temperature of the space.
In the multi-split operation process, only part of the indoor heat exchangers is in an operating state. In order to ensure the heat exchange effect of the indoor unit heat exchanger in the operating state, the multi-split system can control the electronic expansion valve associated with the indoor heat exchanger in the non-operating state to be closed, so that the refrigerant cannot flow into the indoor heat exchanger in the non-operating state. However, the electronic expansion valve is used as an executing component which receives a control command of the system and executes a control operation corresponding to the control command; but its execution of the control instructions cannot be fed back to the control system.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
the system controls the electronic expansion valve corresponding to the indoor heat exchanger in the non-operation state to close, but the opening degree of the electronic expansion valve is not completely closed, and the refrigerant still flows to the indoor heat exchanger in the non-operation state, so that the temperature adjusting effect of the indoor heat exchanger in the operation state on the indoor environment is reduced.
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 nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a method and a device for controlling a multi-split system, and the multi-split system, wherein under the condition that a refrigerant flows through a second heat exchange assembly in a non-heating state, an electronic expansion valve for adjusting the refrigerant flow of a pipeline where the second heat exchange assembly is located is subjected to opening correction, so that the temperature adjusting effect of the first heat exchange assembly in heating operation on an indoor environment is ensured.
In some embodiments, the method for controlling a multi-split air conditioning system includes that the multi-split air conditioning system at least includes a first heat exchange assembly and a second heat exchange assembly for adjusting an indoor temperature, and the second heat exchange assembly is configured with an electronic expansion valve for adjusting a flow rate of a refrigerant in a pipeline where the second heat exchange assembly is located; the method for controlling the multi-split system comprises the following steps: responding to a heating operation instruction of the first heat exchange assembly, and acquiring leakage detection information of an electronic expansion valve associated with the second heat exchange assembly; and controlling the electronic expansion valve to execute opening correction operation under the condition that the leakage detection information indicates that the refrigerant flows through the second heat exchange assembly.
In some embodiments, obtaining leak detection information for an electronic expansion valve associated with the second heat exchange assembly comprises: controlling the compressor to keep in an operating state and acquiring temperature detection information of the second heat exchange assembly; and determining whether the second heat exchange assembly has the refrigerant flowing through according to the temperature detection information.
In some embodiments, the second heat exchange assembly comprises at least one indoor heat exchanger, a first temperature sensor for detecting the temperature of a refrigerant at the air inlet end is arranged at the air inlet end of the indoor heat exchanger, and a second temperature sensor for detecting the temperature of a refrigerant at the liquid outlet end is arranged at the liquid outlet end of the indoor heat exchanger; obtain the temperature detection information of second heat exchange assemblies, include: acquiring the temperature of a refrigerant at an air inlet end detected by a first temperature sensor; and/or acquiring the temperature of the refrigerant at the liquid outlet end detected by the second temperature sensor.
In some embodiments, determining whether the refrigerant flows through the second heat exchange assembly according to the temperature detection information includes: calculating the temperature difference between the temperature of the refrigerant at the air inlet end and the temperature of the refrigerant at the liquid outlet end; and under the condition that the temperature difference value is greater than the first temperature threshold value and lasts for a first reference time period, determining that the refrigerant flows through the second heat exchange assembly.
In some embodiments, after obtaining the temperature detection information of the second heat exchange assembly, the method for controlling the multi-split system further includes: comparing a plurality of temperature data continuously detected by the second temperature sensor; and under the condition that the temperature of the refrigerant at the liquid outlet end is determined to have a rising trend, judging whether the refrigerant flows through the second heat exchange assembly.
In some embodiments, controlling the electronic expansion valve to perform an opening correction operation includes: controlling the electronic expansion valve to operate the opening correction mode for multiple times until no refrigerant flows through the second heat exchange assembly; wherein, the opening correction mode includes: and controlling the electronic expansion valve to perform a reset operation, and controlling the electronic expansion valve to be closed under the condition that the electronic expansion valve is in an initial state.
In some embodiments, controlling the electronic expansion valve to perform a reset operation comprises: controlling the electronic expansion valve to execute an opening instruction; controlling the electronic expansion valve to execute a power-off operation under the condition that the electronic expansion valve is in an open state and lasts for a second reference time length; and controlling the electronic expansion valve to execute a reset operation under the condition that the electronic expansion valve is in a power-off state and lasts for a third reference time length.
In some embodiments, the method for controlling a multiple online system further comprises: and under the condition that the leakage detection information indicates that the second heat exchange assembly does not have refrigerant flowing, controlling the first heat exchange assembly to execute a heating operation instruction.
In some embodiments, the apparatus for controlling a multi-split air conditioning system includes a processor and a memory storing program instructions, wherein the processor executes the program instructions to perform the method for controlling the multi-split air conditioning system.
In some embodiments, the multi-split system comprises a first heat exchange assembly and a second heat exchange assembly for regulating the indoor temperature, and the device for controlling the multi-split system is described above; the second heat exchange assembly is provided with an electronic expansion valve used for adjusting the flow of a refrigerant in a pipeline where the second heat exchange assembly is located, and the electronic expansion valve is arranged at the liquid outlet end of the second heat exchange assembly.
The method and the device for controlling the multi-split system and the multi-split system provided by the embodiment of the disclosure can achieve the following technical effects:
when the first heat exchange assembly is in a heating running state, leakage detection information of an electronic expansion valve used for adjusting the flow of a refrigerant in a pipeline where the second heat exchange assembly is located is obtained, and the electronic expansion valve is controlled to execute opening correction operation under the condition that the leakage detection information shows that the refrigerant flows through the second heat exchange assembly. Therefore, under the condition that the electronic expansion valve has refrigerant leakage, the electronic expansion valve can be in a closed state by executing the opening correction operation, the refrigerant is prevented from leaking to the second heat exchange assembly in a non-operation state, and the temperature adjusting effect of the first heat exchange assembly in a heating operation state on the indoor environment is ensured.
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 in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
fig. 1 is a schematic structural diagram of a multiple on-line system according to an embodiment of the disclosure;
fig. 2 is a schematic diagram of a method for controlling a multiple on-line system according to an embodiment of the disclosure;
fig. 3 is a schematic diagram of another method for controlling a multiple on-line system according to an embodiment of the disclosure;
fig. 4 is a schematic diagram of another method for controlling a multiple on-line system according to an embodiment of the disclosure;
fig. 5 is a schematic diagram of another method for controlling a multiple on-line system according to an embodiment of the disclosure;
fig. 6 is a schematic diagram of another method for controlling a multiple on-line system according to an embodiment of the disclosure;
fig. 7 is a schematic diagram of an apparatus for controlling a multiple on-line system according to an embodiment of the disclosure.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. 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 be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
The term "correspond" may refer to an association or binding relationship, and a corresponds to B refers to an association or binding relationship between a and B.
In the embodiment of the disclosure, the intelligent household appliance is a household appliance formed by introducing a microprocessor, a sensor technology and a network communication technology into the household appliance, and has the characteristics of intelligent control, intelligent sensing and intelligent application, the operation process of the intelligent household appliance usually depends on the application and processing of modern technologies such as internet of things, internet and an electronic chip, for example, the intelligent household appliance can realize the remote control and management of a user on the intelligent household appliance by connecting the intelligent household appliance with the electronic device.
In the disclosed embodiment, the terminal device is an electronic device with a wireless connection function, and the terminal device can be in communication connection with the above intelligent household appliance by connecting to the internet, or can be in communication connection with the above intelligent household appliance directly in a bluetooth mode, a wifi mode, or the like. In some embodiments, the terminal device is, for example, a mobile device, a computer, or a vehicle-mounted device built in a floating car, or any combination thereof. The mobile device may include, for example, a cell phone, a smart home device, a wearable device, a smart mobile device, a virtual reality device, or the like, or any combination thereof, wherein the wearable device includes, for example: smart watches, smart bracelets, pedometers, and the like.
In the embodiment of the present disclosure, as shown in fig. 1, the multi-split air-conditioning system includes a first heat exchange assembly 200 and a second heat exchange assembly 300 for adjusting an indoor temperature, and the second heat exchange assembly 300 is provided with an electronic expansion valve 320 for adjusting a flow rate of a refrigerant in a pipe where the second heat exchange assembly 300 is located.
Optionally, the first heat exchange assembly 200 and the second heat exchange assembly 300 are used for temperature regulation of the same room. The first heat exchange assembly 200 may include a double pipe heat exchanger 210, and the double pipe heat exchanger 210 may be disposed under the floor of a room, and a heating operation by the double pipe heat exchanger 210 is performed to perform an in-room heating function.
Optionally, the sleeve heat exchanger 210 may include a floor heating heat exchange pipe and a floor heating water pipe; the floor heating heat exchange tube is connected with the second heat exchange assembly 300 in parallel, and is provided with a floor heating valve 220 connected with the floor heating heat exchange tube in series; the floor heating water pipe sleeve is arranged on the floor heating heat exchange pipe and used for filling water for performing heat radiation on a room between the floor heating heat exchange pipe and the floor heating water pipe.
Optionally, the floor heating water pipes are uniformly laid on the ground of the room, so that the heating effect on the room is more uniform when the first heat exchange assembly 200 responds to the heating operation instruction to perform heating operation.
When the multi-split system is in a heating operation state, a floor heating valve 220 is controlled to be opened in response to a floor heating mode of the multi-split system, and a high-temperature and high-pressure gaseous refrigerant flows through a floor heating heat exchange tube; the heat that the high temperature high pressure refrigerant in the heat exchange tube of heating up carries out the heat exchange with the water in the water pipe of heating up to water in the water pipe of heating up, and then the water pipe of heating up that high temperature water is through laying in the room bottom surface carries out the heat radiation to whole room, thereby the function of heating up to the realization.
Alternatively, the second heat exchange assembly 300 may be installed in an indoor air conditioner of a room. The second heat exchange assembly 300 may include at least one indoor heat exchanger 310, and the indoor unit of the air conditioner is disposed in a room where the floor heating water pipe is disposed.
Optionally, the second heat exchange assembly 300 further comprises a first temperature sensor 330 and a second temperature sensor 340. The first temperature sensor 330 is disposed at an air inlet end of the indoor heat exchanger 310 and configured to detect a temperature of a refrigerant at the air inlet end; the second temperature sensor 340 is disposed at the liquid outlet end of the indoor heat exchanger 310 and configured to detect a temperature of a refrigerant at the liquid outlet end.
Under the condition that the room needs to be refrigerated, the multi-split air conditioning system is controlled to carry out refrigerating operation, the floor heating valve 220 is closed, and the second heat exchange assembly 300 is controlled to realize a refrigerating effect, so that the second heat exchange assembly 300 can regulate the temperature of the environment in the room.
Under the condition that the room needs to be heated, the multi-split air conditioner system is controlled to perform heating operation, the floor heating valve 220 is opened, and the electronic expansion valve 320 associated with the second heat exchange assembly 300 is closed, so that the air conditioner indoor unit is in a standby state, and the first heat exchange assembly 200 works to achieve floor heating in the room. Generally, in the floor heating mode, the control module of the multi-split system is configured to control the electronic expansion valve 320 associated with the second heat exchange assembly 300 to close; however, the electronic expansion valve 320 serves as an executing component that receives a control command of the system and executes a control operation corresponding to the control command; but its execution of the control instructions cannot be fed back to the control system. Therefore, in practical applications, it often happens that a control module of the system sends a closing instruction to the electronic expansion valve 320, but the electronic expansion valve 320 is not completely closed, and there still exists a refrigerant flowing through the electronic expansion valve 320, so that the refrigerant returns to the compressor through the second heat exchange assembly 300 to form a bypass circuit, which causes a decrease in heating effect of the first heat exchange assembly 200 on a room, and causes poor experience for a user using the multi-split system.
In some embodiments, the method for controlling a multi-split air conditioning system includes that the multi-split air conditioning system at least includes a first heat exchange assembly 200 and a second heat exchange assembly 300 for adjusting an indoor temperature, and the second heat exchange assembly 300 is configured with an electronic expansion valve 320 for adjusting a flow rate of a refrigerant in a pipeline where the second heat exchange assembly 300 is located; the method for controlling the multi-split system comprises the following steps: in response to a heating operation instruction of the first heat exchange assembly 200, acquiring leakage detection information of the electronic expansion valve 320 associated with the second heat exchange assembly 300; and controlling the electronic expansion valve 320 to perform an opening degree correction operation when the leakage detection information indicates that the refrigerant flows through the second heat exchange assembly 300.
Optionally, the executing body for executing the steps may be a control module of the multi-split system. Specifically, the control module of the multi-split air conditioning system responds to the heating operation instruction of the first heat exchange assembly 200 to acquire leakage detection information of the electronic expansion valve 320 associated with the second heat exchange assembly 300; when the leakage detection information indicates that the refrigerant flows through the second heat exchange assembly 300, the control module of the multi-split air conditioning system sends an opening correction instruction to the electronic expansion valve 320, so that the electronic expansion valve 320 performs an opening correction operation.
In this way, by detecting whether or not the refrigerant flows through the second heat exchange unit 300, the electronic expansion valve 320 is controlled to perform the opening degree correction operation when the electronic expansion valve 320 has a leakage problem. In order to ensure that the electronic expansion valve 320 associated with the second heat exchange assembly 300 can be fully opened and closed in the process of heating the indoor environment by the first heat exchange assembly 200, so that the heating effect of the indoor environment by the first heat exchange assembly 200 is guaranteed.
With reference to fig. 2, an embodiment of the present disclosure provides a method for controlling a multiple on-line system, including:
and S01, responding to the heating operation instruction of the first heat exchange assembly, and acquiring leakage detection information of the electronic expansion valve associated with the second heat exchange assembly.
And S02, controlling the electronic expansion valve to execute the opening correction operation when the leakage detection information shows that the refrigerant flows through the second heat exchange assembly.
By adopting the method for controlling the multi-split air conditioning system provided by the embodiment of the disclosure, when the first heat exchange assembly is in a heating operation state, the leakage detection information of the electronic expansion valve used for adjusting the flow of the refrigerant in the pipeline where the second heat exchange assembly is located is obtained, and the electronic expansion valve is controlled to execute the opening correction operation under the condition that the leakage detection information shows that the refrigerant flows through the second heat exchange assembly. Therefore, under the condition that the electronic expansion valve has refrigerant leakage, the electronic expansion valve can be adjusted to be in a closed state by executing the opening correction operation, the refrigerant is prevented from leaking to the second heat exchange assembly in a non-operation state, and the temperature adjusting effect of the first heat exchange assembly in a heating operation state on the indoor environment is ensured.
In this scheme, leak testing information can be judged through the refrigerant temperature at second heat exchange assemblies both ends. The leak detection information may also be determined by detecting return port pressure data for the compressors of the multiple on-line system.
In one example, obtaining leak detection information for an electronic expansion valve associated with a second heat exchange assembly comprises: controlling the compressor to keep in an operating state and acquiring temperature detection information of the second heat exchange assembly; and determining whether the second heat exchange assembly has the refrigerant flowing through according to the temperature detection information.
It can be understood that the compressor is in an operating state and the first heat exchange assembly is in a heating state, at this time, the second heat exchange assembly is in a standby state, that is, a closing instruction sent by the control module of the multi-split air conditioning system to the electronic expansion valve associated with the second heat exchange assembly. Therefore, the temperature conditions at the two ends of the second heat exchange assembly are detected, and whether the refrigerant flows through the second heat exchange assembly can be determined according to the temperature difference conditions at the two ends of the second heat exchange assembly. The refrigerant flowing through the second heat exchange assembly can indicate that the refrigerant leakage condition exists in the electronic expansion valve associated with the second heat exchange assembly.
With reference to fig. 3, another method for controlling a multiple split air conditioner system according to an embodiment of the present disclosure includes:
and S11, controlling the compressor to keep running, and acquiring temperature detection information of the second heat exchange assembly.
And S12, determining whether the second heat exchange assembly has refrigerant flowing through according to the temperature detection information.
Therefore, whether the second heat exchange assembly has the refrigerant flowing through is determined according to the temperature detection information of the second heat exchange assembly; and then whether the electronic expansion valve has refrigerant leakage or not is determined according to the refrigerant circulation condition of the second heat exchange assembly. If the refrigerant flows through the second heat exchange assembly, the refrigerant leakage exists in the electronic expansion valve associated with the second heat exchange assembly; when the electronic expansion valve has refrigerant leakage, the control module needs to send an opening correction refrigeration corresponding to the current leakage state of the electronic expansion valve to the electronic expansion valve, so that the electronic expansion valve executes the opening correction operation.
Optionally, the second heat exchange assembly comprises at least one indoor heat exchanger, a first temperature sensor for detecting the temperature of a refrigerant at the air inlet end is arranged at the air inlet end of the indoor heat exchanger, and a second temperature sensor for detecting the temperature of a refrigerant at the liquid outlet end is arranged at the liquid outlet end of the indoor heat exchanger; obtain the temperature detection information of second heat exchange assemblies, include: acquiring the temperature of a refrigerant at an air inlet end detected by a first temperature sensor; and/or acquiring the temperature of the refrigerant at the liquid outlet end detected by the second temperature sensor.
In one example, the detection data of the second temperature sensor is continuously acquired, and the variation trend of the temperature of the refrigerant at the liquid outlet end of the second heat exchange assembly is determined; and under the condition that the temperature of the refrigerant at the liquid outlet end is increased, judging the temperature difference between the temperature of the refrigerant at the gas inlet end and the temperature of the refrigerant at the liquid outlet end.
In another example, detection data of a first temperature sensor and detection data of a second temperature sensor are respectively obtained, and whether temperature change exists between the temperature of the refrigerant at the air inlet end and the temperature of the refrigerant at the liquid outlet end of the second heat exchange assembly or not is determined along the refrigerant flowing direction; if the temperature deviation does not exist between the temperature of the refrigerant at the air inlet end and the temperature of the refrigerant at the liquid outlet end, the second heat exchange assembly does not have the refrigerant flowing, namely, the electronic expansion valve associated with the second heat exchange assembly does not have the leakage phenomenon. On the contrary, if there is a temperature deviation between the inlet end refrigerant temperature and the outlet end refrigerant temperature, the step of determining the temperature difference between the inlet end refrigerant temperature and the outlet end refrigerant temperature is required.
Optionally, determining whether the second heat exchange assembly has a refrigerant flowing through according to the temperature detection information includes: calculating the temperature difference between the temperature of the refrigerant at the air inlet end and the temperature of the refrigerant at the liquid outlet end; and under the condition that the temperature difference value is greater than the first temperature threshold value and lasts for a first reference time length, the second heat exchange assembly is determined to have the refrigerant flowing through.
Optionally, determining whether the second heat exchange assembly has a refrigerant flowing through according to the temperature detection information includes: calculating the temperature difference between the temperature of the refrigerant at the air inlet end and the temperature of the refrigerant at the liquid outlet end; comparing the temperature difference to a first temperature threshold; and determining whether the second heat exchange assembly has the refrigerant flowing through according to the comparison result.
Optionally, determining whether the second heat exchange assembly has a refrigerant flowing through according to the comparison result, including: and under the condition that the temperature difference is smaller than or equal to the first temperature threshold, determining that no refrigerant flows through the second heat exchange assembly, or determining that the amount of the refrigerant flowing through the second heat exchange assembly is extremely small and can be ignored at the moment. At this moment, can control first heat exchange assemblies and respond to the operation instruction that heats to the better realization of function warms up effectively adjusts indoor ambient temperature.
Under the condition that the temperature difference value is larger than the first temperature threshold value, the temperature of the refrigerant at the air inlet end detected by the first temperature sensor and the temperature of the refrigerant at the liquid outlet end detected by the second temperature sensor are obtained again, and then the temperature difference value between the temperature of the refrigerant at the air inlet end and the temperature of the refrigerant at the liquid outlet end is compared with the first temperature threshold value so as to determine the duration time of the temperature difference value larger than the first temperature threshold value; and determining that the refrigerant flows through the second heat exchange assembly when the duration reaches the first reference duration.
With reference to fig. 4, another method for controlling a multiple on-line system is provided in an embodiment of the present disclosure, including:
and S21, acquiring the temperature of the air inlet end refrigerant and the temperature of the liquid outlet end refrigerant.
And S22, calculating the temperature difference between the temperature of the air inlet end refrigerant and the temperature of the liquid outlet end refrigerant.
And S23, determining that the refrigerant flows through the second heat exchange assembly when the temperature difference is greater than the first temperature threshold and lasts for a first reference time length.
Therefore, whether the second heat exchange assembly has the refrigerant flowing through is determined according to the temperature difference value between the temperature of the refrigerant at the air inlet end and the temperature of the refrigerant at the liquid outlet end; and then whether the electronic expansion valve has a leakage problem is determined according to the refrigerant circulation condition of the second heat exchange assembly, and an information basis is provided for further performing opening correction on the electronic expansion valve under the condition that the electronic expansion valve has leakage.
Optionally, after obtaining the temperature detection information of the second heat exchange assembly, the method for controlling the multi-split system further includes: comparing a plurality of temperature data continuously detected by the second temperature sensor; and under the condition that the temperature of the refrigerant at the liquid outlet end is determined to have a rising trend, judging whether the refrigerant flows through the second heat exchange assembly.
Therefore, the step of prejudging whether the electronic expansion valve leaks is added, so that the steps of obtaining and judging leakage detection information are simplified under the condition that a refrigerant does not flow through the second heat exchange assembly, namely the electronic expansion valve does not leak, the starting speed of a floor heating mode of the multi-split system is increased, and the use experience of a user on the floor heating function of the multi-split system is improved.
Optionally, controlling the electronic expansion valve to perform an opening degree correction operation includes: and controlling the electronic expansion valve to operate the opening correction mode for multiple times until no refrigerant flows through the second heat exchange assembly. In this scheme, the number of times of operating the opening correction mode is not specifically limited, and may be 2 times, 3 times, 4 times, 5 times, and the like, and it is sufficient that the electronic expansion valve corresponding to the second heat exchange assembly is in a fully closed state.
In the embodiment of the disclosure, taking the preset opening correction mode for three times as an example, after the electronic expansion valve is controlled to execute the three opening correction modes, the temperature difference between the temperature of the refrigerant at the air inlet end and the temperature of the refrigerant at the liquid outlet end is compared with the first temperature threshold value again; if the comparison result still indicates that the second heat exchange assembly has the refrigerant flowing through. At this time, the control module may generate fault information of the electronic expansion valve and push the fault information.
Optionally, the manner of pushing the failure information may include: and displaying a fault code corresponding to the leakage fault of the electronic expansion valve on a display part of the multi-split system. Or sending information containing leakage faults of the electronic expansion valves to associated users of the multi-split air conditioning system. The associated user may be a user of the multi-online system, and the associated user may also be a maintenance person associated with the multi-online system.
Wherein, the opening correction mode includes: and controlling the electronic expansion valve to execute a reset operation, and controlling the electronic expansion valve to close under the condition that the electronic expansion valve is in an initial state. The opening correction step is repeatedly executed, so that the opening of the electronic expansion valve can be in a fully closed state, and the temperature regulation effect of the first heat exchange assembly on the indoor environment is ensured.
Optionally, the electronic expansion valve is controlled to perform a reset operation, including: controlling the electronic expansion valve to execute an opening instruction; controlling the electronic expansion valve to execute a power-off operation under the condition that the electronic expansion valve is in an open state and lasts for a second reference time length; and controlling the electronic expansion valve to execute a reset operation under the condition that the electronic expansion valve is in a power-off state and lasts for a third reference time length.
In this way, through the above control operation, the reset accuracy of the electronic expansion valve is realized so that the closing of the electronic expansion valve can be realized by executing the opening degree correction mode a preset number of times.
With reference to fig. 5, another method for controlling a multiple on-line system is provided in an embodiment of the present disclosure, including:
and S31, controlling the electronic expansion valve to execute an opening command.
And S32, controlling the electronic expansion valve to execute the power-off operation under the condition that the electronic expansion valve is in the open state and lasts for a second reference time length.
And S33, controlling the electronic expansion valve to execute a reset operation under the condition that the electronic expansion valve is in a power-off state and lasts for a third reference time length.
And S34, controlling the electronic expansion valve to close when the electronic expansion valve is in the initial state.
In this way, the opening correction mode is repeatedly executed, so that the opening of the electronic expansion valve can be in a fully closed state, the refrigerant is ensured not to flow into the indoor heat exchanger in a non-operation state, and the temperature regulation effect of the first heat exchange assembly in heating operation on the indoor environment is ensured.
In some embodiments, the method for controlling a multiple online system further comprises: and under the condition that the leakage detection information indicates that the second heat exchange assembly does not have refrigerant flowing, controlling the first heat exchange assembly to execute a heating operation instruction.
Like this, can carry out the operation instruction of heating through controlling first heat exchange assemblies to the better realization of function warms up effectively adjusts indoor ambient temperature.
With reference to fig. 6, another method for controlling a multiple on-line system is provided in an embodiment of the present disclosure, including:
and S01, responding to the heating operation instruction of the first heat exchange assembly, and acquiring leakage detection information of the electronic expansion valve associated with the second heat exchange assembly.
And S03, controlling the first heat exchange assembly to execute a heating operation instruction under the condition that the leakage detection information shows that the second heat exchange assembly does not have refrigerant flowing.
By adopting the method for controlling the multi-split air conditioning system provided by the embodiment of the disclosure, when the first heat exchange assembly is in a heating operation state, the leakage detection information of the electronic expansion valve used for adjusting the flow of the refrigerant in the pipeline where the second heat exchange assembly is located is obtained, and the electronic expansion valve is controlled to execute the opening correction operation under the condition that the leakage detection information shows that the refrigerant flows through the second heat exchange assembly. Therefore, under the condition that the electronic expansion valve has refrigerant leakage, the electronic expansion valve can be adjusted to be in a closed state by executing the opening correction operation, the refrigerant is prevented from leaking to the second heat exchange assembly in a non-operation state, and the temperature adjusting effect of the first heat exchange assembly in a heating operation state on the indoor environment is ensured.
As shown in fig. 7, an apparatus for controlling a multi-split system according to an embodiment of the present disclosure includes a processor (processor)100 and a memory (memory) 101. Optionally, the apparatus may also include 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 a bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call logic instructions in the memory 101 to execute the method for controlling the multi-split system of the above embodiment.
In addition, the logic instructions in the memory 101 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 101, which is a computer-readable storage medium, may be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing, i.e., implements the method for controlling the multi-split system in the above-described embodiments, by executing program instructions/modules stored in the memory 101.
The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, memory 101 may include high speed random access memory and may also include non-volatile memory.
The embodiment of the disclosure provides a multi-split system, which comprises a first heat exchange assembly and a second heat exchange assembly for adjusting indoor temperature, and the device for controlling the multi-split system; the second heat exchange assembly is provided with an electronic expansion valve used for adjusting the flow of a refrigerant in a pipeline where the second heat exchange assembly is located, and the electronic expansion valve is arranged at the liquid outlet end of the second heat exchange assembly.
By adopting the multi-split system provided by the embodiment of the disclosure, when the first heat exchange assembly is in a heating operation state, the leakage detection information of the electronic expansion valve for adjusting the flow of the refrigerant in the pipeline where the second heat exchange assembly is located is acquired, and the electronic expansion valve is controlled to execute the opening correction operation under the condition that the leakage detection information indicates that the refrigerant flows through the second heat exchange assembly. Therefore, under the condition that the electronic expansion valve has refrigerant leakage, the electronic expansion valve can be adjusted to be in a closed state by executing the opening correction operation, the refrigerant is prevented from leaking to the second heat exchange assembly in a non-operation state, and the temperature adjusting effect of the first heat exchange assembly in a heating operation state on the indoor environment is ensured.
The disclosed embodiments provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling a multiple on-line system.
The disclosed embodiments provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the above-mentioned method for controlling a multiple online system.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify 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. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "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 application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, 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 an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would 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 may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart 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 disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (10)
1. A method for controlling a multi-split air conditioning system, wherein the multi-split air conditioning system at least comprises a first heat exchange assembly and a second heat exchange assembly for adjusting indoor temperature, and the second heat exchange assembly is provided with an electronic expansion valve for adjusting the flow of a refrigerant in a pipeline where the second heat exchange assembly is located, the method comprising the following steps:
responding to a heating operation instruction of the first heat exchange assembly, and acquiring leakage detection information of an electronic expansion valve associated with the second heat exchange assembly;
and controlling the electronic expansion valve to execute an opening correction operation under the condition that the leakage detection information indicates that the refrigerant flows through the second heat exchange assembly.
2. The method of claim 1, wherein said obtaining leak detection information for an electronic expansion valve associated with said second heat exchange assembly comprises:
controlling a compressor to keep an operating state, and acquiring temperature detection information of the second heat exchange assembly;
and determining whether the second heat exchange assembly has a refrigerant flowing through according to the temperature detection information.
3. The method as claimed in claim 2, wherein the second heat exchange assembly comprises at least one indoor heat exchanger, a first temperature sensor for detecting the temperature of a refrigerant at an air inlet end is arranged at the air inlet end of the indoor heat exchanger, and a second temperature sensor for detecting the temperature of a refrigerant at an liquid outlet end is arranged at the liquid outlet end of the indoor heat exchanger;
the acquiring of the temperature detection information of the second heat exchange assembly comprises:
acquiring the temperature of a refrigerant at the air inlet end detected by the first temperature sensor; and/or the presence of a gas in the gas,
and acquiring the temperature of the refrigerant at the liquid outlet end detected by the second temperature sensor.
4. The method of claim 3, wherein the determining whether the second heat exchange assembly has a refrigerant flowing therethrough according to the temperature detection information comprises:
calculating the temperature difference between the temperature of the air inlet end refrigerant and the temperature of the liquid outlet end refrigerant;
and under the condition that the temperature difference value is greater than a first temperature threshold value and lasts for a first reference time length, determining that the refrigerant flows through the second heat exchange assembly.
5. The method of claim 3, after obtaining the temperature detection information of the second heat exchange assembly, further comprising:
comparing a plurality of temperature data continuously detected by the second temperature sensor;
and under the condition that the temperature of the refrigerant at the liquid outlet end is determined to have a rising trend, judging whether the refrigerant flows through the second heat exchange assembly.
6. The method of claim 1, wherein the controlling the electronic expansion valve to perform an opening correction operation comprises:
controlling the electronic expansion valve to operate in an opening correction mode for multiple times until no refrigerant flows through the second heat exchange assembly;
wherein the opening correction mode includes: and controlling the electronic expansion valve to execute a reset operation, and controlling the electronic expansion valve to be closed under the condition that the electronic expansion valve is in an initial state.
7. The method of claim 6, wherein the controlling the electronic expansion valve to perform a reset operation comprises:
controlling the electronic expansion valve to execute an opening instruction;
controlling the electronic expansion valve to execute a power-off operation under the condition that the electronic expansion valve is in an open state and lasts for a second reference time length;
and under the condition that the electronic expansion valve is in a power-off state and lasts for a third reference time length, controlling the electronic expansion valve to execute a reset operation.
8. The method of any one of claims 1 to 7, further comprising:
and under the condition that the leakage detection information shows that no refrigerant flows through the second heat exchange assembly, controlling the first heat exchange assembly to execute a heating operation instruction.
9. An apparatus for controlling a multiple online system, comprising a processor and a memory storing program instructions, characterized in that the processor is configured to perform the method for controlling a multiple online system according to any one of claims 1 to 8 when executing the program instructions.
10. A multi-split system, comprising a first heat exchange assembly and a second heat exchange assembly for regulating indoor temperature, and the apparatus for controlling the multi-split system as claimed in claim 9;
the second heat exchange assembly is provided with an electronic expansion valve used for adjusting the flow of a refrigerant in a pipeline where the second heat exchange assembly is located, and the electronic expansion valve is arranged at the liquid outlet end of the second heat exchange assembly.
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