CN114216230A - Method and device for controlling air conditioner, air conditioner and storage medium - Google Patents
Method and device for controlling air conditioner, air conditioner and storage medium Download PDFInfo
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- CN114216230A CN114216230A CN202111444492.XA CN202111444492A CN114216230A CN 114216230 A CN114216230 A CN 114216230A CN 202111444492 A CN202111444492 A CN 202111444492A CN 114216230 A CN114216230 A CN 114216230A
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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
- 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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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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- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application relates to the technical field of intelligent household appliances, and discloses a method for controlling an air conditioner, which comprises the following steps: when the air conditioner is started, the electronic expansion valve is controlled to be opened to the maximum opening degree; and under the condition that the electronic expansion valve is opened to the maximum opening degree, controlling the air conditioner to operate for a set time length so as to adjust the pressure difference between the inlet and the outlet of the one-way valve. Controlling the electronic expansion valve to be opened to the maximum opening degree, and accelerating the circulation speed of the refrigerant; and under the condition that the electronic expansion valve is opened to the maximum opening, the air conditioner is controlled to operate for a set time, so that the pressure difference between the inlet and the outlet of the one-way valve meets the on-off requirement of the one-way valve, and the probability of on-off failure of the one-way valve is reduced. The application also discloses a device for controlling the air conditioner, the air conditioner and a storage medium.
Description
Technical Field
The present application relates to the field of intelligent home appliance technologies, and for example, to a method and an apparatus for controlling an air conditioner, and a storage medium.
Background
The variable split design of the air conditioner means that when the air conditioner operates in different modes, different circulation paths are respectively formed in the heat exchanger by the refrigerant. Specifically, when the air conditioner heats, the refrigerant in the heat exchanger can flow through more branches, so that the pressure drop of the system is reduced; when the air conditioner refrigerates, the refrigerant of the heat exchanger can flow through fewer branches, so that the refrigerant circulation is accelerated.
The prior art discloses a heat exchanger having a plurality of heat exchange lines and a bypass line communicating with the heat exchange lines. The bypass pipeline is provided with a one-way valve, the one-way valve is conducted under the heating mode of the air conditioner to enable the plurality of heat exchange pipelines to form a parallel connection channel, and the one-way valve is stopped under the cooling mode to enable the plurality of heat exchange pipelines to form a series connection channel, so that variable shunting of the heat exchanger is realized.
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 setting mode of the one-way valve comprises horizontal setting and vertical setting, wherein the horizontal setting is adopted to easily cause abrasion and noise generation of the valve core and the valve wall, and the vertical setting is adopted to avoid abrasion and noise. And the vertical arrangement needs certain pressure difference between the upper end and the lower end of the one-way valve to balance the gravity of the valve core, so that the normal on-off function of the one-way valve is realized.
However, the air conditioner with the variable flow dividing function has unstable pressure when the air conditioner is started, and the pressure difference between the inlet and the outlet of the one-way valve is difficult to ensure to cause the on-off failure of the one-way valve, so that the air conditioner cannot realize the variable flow dividing function.
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 an air conditioner, the air conditioner and a storage medium, so as to reduce the probability of on-off failure of a one-way valve caused by the fact that the one-way valve is vertically arranged and the pressure of the air conditioner is unstable when the air conditioner is started.
In some embodiments, the method for controlling an air conditioner includes the air conditioner including an outdoor heat exchanger, an electronic expansion valve, and an indoor heat exchanger connected in series in this order; wherein the indoor heat exchanger and/or the outdoor heat exchanger includes a bypass line having a check valve placed vertically, a conducting direction of the check valve being defined to be conducted when the indoor heat exchanger having the same or the outdoor heat exchanger having the same is used as an evaporator and to be cut off when the indoor heat exchanger having the same or the outdoor heat exchanger having the same is used as a condenser; the method comprises the following steps:
when the air conditioner is started, controlling the electronic expansion valve to be opened to the maximum opening degree;
and under the condition that the electronic expansion valve is opened to the maximum opening degree, controlling the air conditioner to operate for a set time length so as to adjust the pressure difference between an inlet and an outlet of the one-way valve.
Optionally, the set time period is determined according to an operation mode of the air conditioner and an outdoor temperature.
Optionally, determining the set time period according to the operation mode of the air conditioner and the outdoor temperature includes:
when the air conditioner operates in a refrigeration mode and the outdoor temperature is higher than a first preset temperature, the set time length is a first time length t 1;
when the air conditioner operates in a refrigeration mode and the outdoor temperature is lower than the first preset temperature, the set time length is a second time length t 2;
when the air conditioner operates in a heating mode and the outdoor temperature is higher than a second preset temperature, the set time length is a third time length t 3;
when the air conditioner operates in a heating mode and the outdoor temperature is lower than the second preset temperature, determining the set time according to the exhaust temperature of the compressor;
wherein t1 < t3 < t 2.
Optionally, determining the set period of time based on a discharge temperature of a compressor comprises:
when the exhaust temperature is higher than a third preset temperature, the set time is t 3;
and when the exhaust temperature is lower than the third preset temperature, the set time length is t 2.
Optionally, the first preset temperature is greater than or equal to 16 ℃;
optionally, the second preset temperature is less than or equal to 0 ℃.
Optionally, the third preset temperature is greater than or equal to 50 ℃.
Optionally, after controlling the air conditioner to operate for the set time period, the method includes:
and controlling the opening degree of the electronic expansion valve to be adjusted to an opening degree value corresponding to the current operation mode of the air conditioner.
The device for controlling the air conditioner comprises a processor and a memory which stores program instructions, wherein the processor is configured to execute the method for controlling the air conditioner according to any one of the embodiments when the program instructions are executed.
The air conditioner includes a device for controlling the air conditioner.
The storage medium stores program instructions that, when executed, perform a method for controlling an air conditioner as in any of the above embodiments.
The method and the device for controlling the air conditioner, the air conditioner and the storage medium provided by the embodiment of the disclosure can realize the following technical effects:
in order to avoid the abrasion and abnormal sound of the valve core when the one-way valve is transversely arranged, the one-way valve is vertically arranged. Because the pressure of the refrigerant inside the air conditioner is unstable when the air conditioner is started, the on-off failure of the one-way valve is easily caused because the pressure difference between the inlet and the outlet of the one-way valve is difficult to balance the gravity of the valve core. At the moment, the electronic expansion valve is controlled to be opened to the maximum opening degree, and the circulation speed of the refrigerant is accelerated; and under the condition that the electronic expansion valve is opened to the maximum opening, the air conditioner is controlled to operate for a set time, so that the pressure difference between the inlet and the outlet of the one-way valve meets the on-off requirement of the one-way valve, the probability of on-off failure of the one-way valve is reduced, and the air conditioner can realize the function of variable shunting.
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 diagram of an outdoor heat exchanger provided by an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a refrigerant flow path of an outdoor heat exchanger in a cooling mode of an air conditioner according to an embodiment of the disclosure;
fig. 3 is a schematic diagram of a refrigerant flow path of the outdoor heat exchanger in the heating mode of the air conditioner according to the embodiment of the disclosure;
FIG. 4 is a schematic diagram of a method for controlling an air conditioner according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram illustrating a method for determining a set time length in a cooling mode of an air conditioner according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram illustrating a method for determining a set time length in a heating mode of an air conditioner according to an embodiment of the present disclosure;
FIG. 7 is a schematic illustration of a method of determining a set duration based on exhaust temperature as provided by an embodiment of the present disclosure;
fig. 8 is a schematic diagram of another method for controlling an air conditioner according to an embodiment of the present disclosure;
fig. 9 is a schematic diagram of an apparatus for controlling an air conditioner according to an embodiment of the present disclosure.
Reference numerals:
100: a first main pipeline; 110: a second main pipeline;
200: a first heat exchange path; 210: a second heat exchange path; 220: a third heat exchange path; 230: a fourth heat exchange path; 240: a fifth heat exchange path; 250: a first bypass line; 251: a first check valve; 260: a second bypass pipeline; 261: a second one-way valve;
300: a first shunt element; 310: a second flow dividing element; 320: a third flow dividing element; 330: a fourth shunt element;
400: a processor; 401: a memory; 402: a communication interface; 403: a bus.
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.
The refrigerant circulating system of an air conditioner generally comprises a compressor, an outdoor heat exchanger, an electronic expansion valve, an indoor heat exchanger and a four-way valve, wherein the four-way valve is used for changing the flow direction of a refrigerant in the refrigerant circulating system. When the air conditioner operates in a refrigeration mode, the refrigerant discharged by the compressor passes through the outdoor heat exchanger, the electronic expansion valve and the indoor heat exchanger in sequence through the four-way valve, and finally returns to the compressor to be compressed again. When the air conditioner runs in a heating mode, the refrigerant discharged by the compressor passes through the indoor heat exchanger, the electronic expansion valve and the outdoor heat exchanger in sequence through the four-way valve, and finally returns to the compressor for recompression.
The air conditioner with variable flow dividing function has indoor heat exchanger and/or outdoor heat exchanger with inner refrigerant flow path capable of being changed based on the running mode of the air conditioner. As shown in fig. 1, an embodiment of the present disclosure provides an air conditioner in which a refrigerant flow path of an outdoor heat exchanger is changed according to an operation mode of the air conditioner.
As shown in fig. 1, the outdoor heat exchanger is provided with a first heat exchange path 200, a second heat exchange path 210, a third heat exchange path 220, a fourth heat exchange path 230, and a fifth heat exchange path 240 in this order from top to bottom. The first end of the first heat exchange passage 200 is communicated with the first flow dividing element 300, and the second end thereof is communicated with the second flow dividing element 310; moreover, the first shunt element 300 is in communication with the first main line 100; the first end of the second heat exchange path 210 is communicated with the first flow dividing element 300, and the second end is communicated with the second flow dividing element 310; the first end of the third heat exchange path 220 is communicated with the third flow dividing element 320, and the second end thereof is communicated with the second flow dividing element 310; the first end of the fourth heat exchange path 230 is communicated with the third flow dividing element 320, and the second end thereof is communicated with the second flow dividing element 310. A first end of the fifth heat exchange passage 240 is communicated with the third flow dividing element 320, and a second end thereof is communicated with the fourth flow dividing element 330; and, fourth shunt element 330 is in communication with second main line 110; the first bypass line 250 has a first end connected to the first flow dividing element 300 and a second end connected to the third flow dividing element 320; the first end of the second bypass line 260 is connected to the second flow dividing element 310, and the second end thereof is connected to the fourth flow dividing element 330; the first bypass pipeline 250 is provided with a vertically arranged first check valve 251, and the lower end of the first check valve 251 is an inlet end, and the upper end is an outlet end; the second bypass line 260 is provided with a second check valve 261 arranged vertically, and the lower end of the second check valve 261 is an inlet end and the upper end is an outlet end.
When the air conditioner operates in the cooling mode, the outdoor heat exchanger serves as a condenser, and as shown in fig. 2, the refrigerant enters the first flow dividing element 300 from the first main pipeline 100. The first check valve 251 is kept in a blocking state, and the refrigerant in the first flow dividing element 300 can enter the second flow dividing element 310 only through the first heat exchange passage 200 and the second heat exchange passage 210, respectively. The second check valve 261 maintains a blocking state, and the refrigerant in the second flow dividing element 310 can enter the third flow dividing element 320 only through the third heat exchange path 220 and the fourth heat exchange path 230. Finally, the refrigerant in the third flow dividing element 320 enters the fourth flow dividing element 330 through the fifth heat exchanging channel 240, and flows out of the second main pipeline 110.
When the air conditioner operates in the heating mode, the outdoor heat exchanger serves as an evaporator, and as shown in fig. 3, the refrigerant enters the fourth shunting element 330 from the second main pipeline 110. When the second check valve 261 is kept in a conducting state, the refrigerant in the fourth flow dividing element 330 is divided into two paths, one path enters the third flow dividing element 320 through the fifth heat exchange path 240, and the other path enters the second flow dividing element 310 through the second bypass pipeline 260. Then, the refrigerant in the second flow dividing element 310 is divided into four paths, one path enters the third flow dividing element 320 through the fourth heat exchanging path 230, one path enters the third flow dividing element 320 through the third heat exchanging path 220, one path enters the first flow dividing element 300 through the first heat exchanging path 200, and one path enters the first flow dividing element 300 through the second heat exchanging path 210. The first check valve 251 is kept in a conducting state, and the refrigerant in the third flow dividing element 320 enters the first flow dividing element 300 through the first bypass line 250. Finally, the refrigerant in the first flow dividing element 300 flows out through the first main pipeline 100.
Therefore, the variable flow dividing function of the air conditioner is realized by reasonably arranging the communication relation between the heat exchange passages and the bypass pipeline and arranging the one-way valve on the bypass pipeline, wherein the one-way valve is closed when the outdoor heat exchanger is used as a condenser and is communicated when the outdoor heat exchanger is used as an evaporator. Once the one-way valve is failed to be switched on or off, the air conditioner cannot realize variable shunting. Here, if the indoor heat exchanger has the heat exchange path and the bypass line provided with the check valve, the check valve is turned on when the indoor heat exchanger is used as the evaporator in the cooling mode of the air conditioner operation and turned off when the indoor heat exchanger is used as the condenser in the heating mode of the air conditioner operation.
In some embodiments, the difference between the upper outlet pressure and the lower inlet pressure is the inlet-outlet pressure difference. The preset pressure difference between the upper end outlet and the lower end inlet of the one-way valve is 0.01MPa, and the on-off of the one-way valve is directly influenced by the pressure difference between the inlet and the outlet. If the pressure difference between the inlet and the outlet is larger than the preset pressure difference, the check valve is closed, and if the pressure difference between the inlet and the outlet is smaller than the preset pressure difference, the check valve is opened.
In some embodiments, as shown in fig. 4, the disclosed embodiments provide a method for controlling an air conditioner, including:
s10: when the air conditioner is started, the processor 400 controls the electronic expansion valve to be opened to the maximum opening degree;
s20: under the condition that the electronic expansion valve is opened to the maximum opening degree, the processor 400 controls the air conditioner to operate for a set time length so as to adjust the inlet-outlet pressure difference of the one-way valve.
When the air conditioner is started, the pressure in the air conditioner is unstable. If the air conditioner is started to operate in the refrigeration mode at this time, the first check valve 251 and the second check valve 261 need to be cut off, that is, the inlet-outlet pressure difference needs to be greater than the preset pressure difference; if the air conditioner is in the heating mode during the startup operation, the first check valve 251 and the second check valve 261 need to be connected, i.e., the inlet-outlet pressure difference needs to be smaller than the preset pressure difference. Because the pressure of the air conditioner is unstable, the pressure difference between the inlet and the outlet of the one-way valve corresponding to different modes is difficult to meet. At the moment, the electronic expansion valve is opened to the maximum opening degree, so that the circulation speed of the refrigerant is accelerated; and under the condition that the electronic expansion valve is opened to the maximum opening, the air conditioner is controlled to operate for a set time, so that the pressure difference between the inlet and the outlet of the one-way valve meets the on-off requirement of the one-way valve, and the probability of on-off failure of the one-way valve is reduced.
Alternatively, the processor 400 determines the set time period according to the operation mode of the air conditioner and the outdoor temperature. The air conditioners have different running modes and different on-off requirements of the one-way valves; the outdoor temperature affects the frequency of the compressor, which affects the flow rate of the refrigerant and further affects the pressure difference between the inlet and the outlet of the check valve. The processor 400 determines the set time period according to the operation mode and the outdoor temperature. Here, the air conditioner is provided with a first sensor for monitoring outdoor temperature, which is electrically connected to the processor 400 and transmits an outdoor temperature signal to the processor 400 in real time.
Alternatively, as shown in fig. 5, the processor 400 determines the set time period according to the operation mode of the air conditioner and the outdoor temperature, including:
s21: in the case where the air conditioner operates in the cooling mode, the processor 400 determines whether the outdoor temperature is greater than a first preset temperature;
s22: if the outdoor temperature is higher than the first preset temperature, the processor 400 determines that the set time period is a first time period t 1; if the outdoor temperature is less than the first predetermined temperature, the processor 400 determines the set time period to be the second time period t 2.
When the air conditioner is started to operate in a cooling mode, the refrigerant enters the outdoor heat exchanger from the first main pipeline 100. The pressure of an outlet on the upper side of the one-way valve is smaller, and if the pressure difference between the inlet and the outlet is smaller than the preset pressure difference, the cut-off one-way valve is conducted. At this time, if the outdoor temperature is higher than the first preset temperature, the frequency of the compressor is higher, and the refrigerant circulation speed is relatively faster. Under the condition that the electronic expansion valve is fully opened, the air conditioner is controlled to operate for a first time period t1 so that the pressure difference between the inlet and the outlet is greater than the preset pressure difference, and the pressure difference between the inlet and the outlet of the one-way valve meets the stop requirement in the refrigeration mode.
Optionally, the first preset temperature is in a range of 16 ℃ to 22 ℃.
Optionally, t1 has a value ranging from 40s to 70 s. For example, t1 can be any value of 40s, 45s, 50s, 55s, 60s, 65s, and 70 s. T1 is preferably 60s here.
And when the air conditioner is in a starting operation refrigeration mode and the outdoor temperature is lower than the first preset temperature, the air conditioner is controlled to operate for a second time period t2 under the condition that the electronic expansion valve is fully opened, so that the pressure difference between the inlet and the outlet is greater than the preset pressure difference. At this time, the frequency of the compressor is low, and the refrigerant circulation speed is relatively slow, so the value of t2 needs to be larger than t 1.
Optionally, t2 has a value ranging from 190s to 220 s. For example, t2 may take any value of 190s, 195s, 200s, 205s, 210s, 215s, 220 s. T2 is preferably 210s here.
Alternatively, as shown in fig. 6, the processor 400 determines the set time period according to the operation mode of the air conditioner and the outdoor temperature, and further includes:
s31: in the case that the air conditioner operates in the heating mode, the processor 400 determines whether the outdoor temperature is greater than a second preset temperature;
s32: if the outdoor temperature is greater than the second preset temperature, the processor 400 determines that the set time period is a third time period t 3; if the outdoor temperature is less than the second predetermined temperature, the processor 400 determines the set time period according to the discharge temperature of the compressor.
When the air conditioner is started to operate in a heating mode, the refrigerant enters the outdoor heat exchanger from the second main pipeline 110. The inlet pressure at the lower side of the one-way valve is smaller, and if the inlet-outlet pressure difference is larger than the preset pressure difference, the conducted one-way valve is stopped. At this time, if the outdoor temperature is higher than the second preset temperature, the air conditioner is controlled to operate for a third time period t3 under the condition that the electronic expansion valve is fully opened, so that the pressure difference between the inlet and the outlet is greater than the preset pressure difference. At this time, the frequency of the compressor is high, and the refrigerant circulation speed is high, so the value of t3 is required to be less than t 2. Meanwhile, when the air conditioner is started to heat, the time for returning lubricating oil of the compressor after being taken out by the refrigerant is longer than the time for cooling, so that the value of t3 is required to be greater than t 1. Therefore, the pressure difference between the inlet and the outlet of the one-way valve meets the conduction requirement in the heating mode.
Optionally, the second preset temperature is in a range of-10 ℃ to 0 ℃.
Optionally, t3 has a value ranging from 110s to 130 s. For example, t3 may be any one of 110s, 115s, 120s, 125s, and 130 s. T3 is preferably 120s here.
Alternatively, as shown in fig. 7, if the outdoor temperature is less than the second preset temperature in step S32, the processor 400 determines the set time period according to the discharge temperature of the compressor, including:
s321: processor 400 determines whether the exhaust temperature is greater than a third preset temperature;
s322: if the exhaust temperature is greater than the third predetermined temperature, the processor 400 determines that the set time period is t 3; if the exhaust temperature is less than the third predetermined temperature, the processor 400 determines that the set time period is t 2.
In the case that the air conditioner is in the heating mode and the outdoor temperature is lower than the second preset temperature, the processor 400 needs to further determine the set time period according to the discharge temperature of the compressor. Here, the air conditioner is provided with a second sensor for monitoring the exhaust temperature, which is electrically connected to the processor 400 and transmits an exhaust temperature signal to the processor 400 in real time.
The determination of the set time is particularly important, although the electronic expansion valve can raise the system pressure within a short time when being opened to the maximum, if the time for maintaining the maximum opening degree is also unreasonable, the one-way valve is damaged, and the refrigeration or heating effect of the air conditioner is seriously influenced. In case that the outdoor temperature is less than the second preset temperature, the frequency of the compressor is relatively low. And the viscosity of the lubricating oil of the compressor is larger at the moment, and the returning time required by the lubricating oil is longer compared with the condition that the outdoor temperature is higher than the second preset temperature. At this time, if the exhaust temperature is low, that is, the exhaust temperature is lower than the third preset temperature, the processor 400 needs to control the air conditioner to operate for the second time period t2 to make the pressure difference between the inlet and the outlet greater than the preset pressure difference. If the exhaust temperature is high, i.e., the exhaust temperature is higher than the third preset temperature, the viscosity of the lubricating oil is lowered so that the required returning time is shorter than in the case where the exhaust temperature is lower than the third preset temperature. At this time, the processor 400 controls the air conditioner to operate for the third time period t3, so that the pressure difference between the inlet and the outlet is greater than the preset pressure difference. The set time length is reasonably determined according to the working condition of the air conditioner, the outdoor temperature and the exhaust temperature, t1 is more than t3 is more than t2, the pressure difference between the inlet and the outlet of the one-way valve can quickly meet the on-off requirement of the one-way valve under different conditions, and the variable flow dividing function of the air conditioner is guaranteed.
In some embodiments, the pipeline connected to the outlet at the upper end of the check valve and the pipeline connected to the inlet at the lower end of the check valve are respectively provided with a small refrigerant pump, which are respectively called a first refrigerant pump and a second refrigerant pump. The two refrigerant pumps are electrically connected to the processor 400, and the processor 400 controls the start and stop of the two refrigerant pumps according to the operation mode of the air conditioner and the pressure difference between the inlet and the outlet of the one-way valve.
The air conditioner starts to operate in a refrigeration mode, the check valve has a stopping requirement, and the pressure of an outlet on the upper side of the check valve is small. At this time, the processor 400 controls the first refrigerant pump to start, and the pressure of the outlet at the upper side of the check valve is increased through the first refrigerant pump, so that the set time period t1 or t2 for the operation of the air conditioner when the outdoor temperature is greater than or less than the first preset temperature is shortened. When the inlet-outlet pressure difference is greater than the preset pressure difference, the processor 400 controls the first refrigerant pump to stop.
The air conditioner is started to operate in a heating mode, the one-way valve has a conduction requirement, and the outlet pressure at the lower side of the one-way valve is smaller. At this time, the processor 400 controls the second refrigerant pump to start, and the pressure of the outlet at the lower side of the check valve is increased through the second refrigerant pump, so that the set time period t3 or t2 for the operation of the air conditioner when the outdoor temperature is greater than or less than the second preset temperature is shortened. When the inlet-outlet pressure difference is smaller than the preset pressure difference, i.e. the conduction requirement is met, the processor 400 controls the first refrigerant pump to stop.
In some embodiments, as shown in fig. 8, the present disclosure provides another method for controlling an air conditioner, including:
s10: when the air conditioner is started, the processor 400 controls the electronic expansion valve to be opened to the maximum opening degree;
s20: under the condition that the electronic expansion valve is opened to the maximum opening degree, the processor 400 controls the air conditioner to operate for a set time length so as to adjust the inlet-outlet pressure difference of the one-way valve;
s30: the processor 400 controls the opening degree of the electronic expansion valve to be adjusted to an opening degree value corresponding to the current operation mode of the air conditioner.
Under the condition that the electronic expansion valve is opened to the maximum opening degree, after the processor 400 controls the air conditioner to operate for a set time, the pressure difference between the inlet and the outlet of the one-way valve meets the on-off requirement corresponding to the current air conditioner operation mode. After the air conditioner runs for a set time, the pressure of the air conditioner already tends to a stable state, and if the opening degree of the expansion valve is still opened to the maximum extent, the refrigeration or heating effect of the air conditioner is affected, so the processor 400 controls the opening degree of the electronic expansion valve to be adjusted to the opening degree value corresponding to the current running mode of the air conditioner.
As shown in fig. 9, an embodiment of the present disclosure further provides an apparatus for controlling an air conditioner, which includes a processor 400(processor) and a memory 401 (memory). Optionally, the apparatus may further include a Communication Interface 402(Communication Interface) and a bus 403. The processor 400, the communication interface 402, and the memory 401 may communicate with each other through a bus 403. Communication interface 402 may be used for information transfer. The processor 400 may call logic instructions in the memory 401 to perform the method for controlling the air conditioner of the above-described embodiment.
In addition, the logic instructions in the memory 401 may be implemented in the form of software functional units and may be stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 401 is a computer-readable storage medium and can 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 400 executes functional applications and data processing, i.e., implements the method for controlling the air conditioner in the above-described embodiments, by executing program instructions/modules stored in the memory 401.
The memory 401 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. Further, the memory 401 may include a high-speed random access memory 401, and may also include a nonvolatile memory 401.
The embodiment of the disclosure also provides an air conditioner, which comprises the device for controlling the air conditioner described in any one of the embodiments.
The disclosed embodiments also provide a storage medium storing computer-executable instructions configured to perform the above-described method for controlling an air conditioner.
The 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, which is stored in a storage medium and includes one or more instructions for enabling 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 place, or may be distributed on a plurality of 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 (11)
1. A method for controlling an air conditioner, wherein the air conditioner comprises an outdoor heat exchanger, an electronic expansion valve and an indoor heat exchanger which are connected in series in sequence; wherein the indoor heat exchanger and/or the outdoor heat exchanger includes a bypass line having a check valve placed vertically, a conducting direction of the check valve being defined to be conducted when the indoor heat exchanger having the same or the outdoor heat exchanger having the same is used as an evaporator and to be cut off when the indoor heat exchanger having the same or the outdoor heat exchanger having the same is used as a condenser; the method comprises the following steps:
when the air conditioner is started, controlling the electronic expansion valve to be opened to the maximum opening degree;
and under the condition that the electronic expansion valve is opened to the maximum opening degree, controlling the air conditioner to operate for a set time length so as to adjust the pressure difference between an inlet and an outlet of the one-way valve.
2. The method for controlling an air conditioner according to claim 1, wherein the set time period is determined according to an operation mode of the air conditioner and an outdoor temperature.
3. The method for controlling an air conditioner according to claim 2, wherein determining the set time period according to the operation mode of the air conditioner and the outdoor temperature includes:
when the air conditioner operates in a refrigeration mode and the outdoor temperature is higher than a first preset temperature, the set time length is a first time length t 1;
when the air conditioner operates in a refrigeration mode and the outdoor temperature is lower than the first preset temperature, the set time length is a second time length t 2;
when the air conditioner operates in a heating mode and the outdoor temperature is higher than a second preset temperature, the set time length is a third time length t 3;
when the air conditioner operates in a heating mode and the outdoor temperature is lower than the second preset temperature, determining the set time according to the exhaust temperature of the compressor;
wherein t1 < t3 < t 2.
4. The method for controlling an air conditioner according to claim 3, wherein determining the set period of time according to a discharge temperature of a compressor includes:
when the exhaust temperature is higher than a third preset temperature, the set time is t 3;
and when the exhaust temperature is lower than the third preset temperature, the set time length is t 2.
5. The method for controlling an air conditioner according to claim 3 or 4,
the first preset temperature is greater than or equal to 16 ℃.
6. The method for controlling an air conditioner according to claim 3 or 4,
the second preset temperature is less than or equal to 0 ℃.
7. The method for controlling an air conditioner according to claim 4,
the third predetermined temperature is greater than or equal to 50 ℃.
8. The method for controlling an air conditioner according to claim 1, comprising, after controlling the air conditioner to operate for a set period of time:
and controlling the opening degree of the electronic expansion valve to be adjusted to an opening degree value corresponding to the current operation mode of the air conditioner.
9. An apparatus for controlling an air conditioner comprising a processor and a memory storing program instructions, characterized in that the processor is configured to perform the method for controlling an air conditioner according to any one of claims 1 to 8 when executing the program instructions.
10. An air conditioner characterized by comprising the apparatus for controlling an air conditioner according to claim 9.
11. A storage medium storing program instructions, characterized in that the program instructions, when executed, perform a method for controlling an air conditioner according to any one of claims 1 to 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111444492.XA CN114216230B (en) | 2021-11-30 | 2021-11-30 | Method and device for controlling air conditioner, air conditioner and storage medium |
| PCT/CN2022/082435 WO2023097936A1 (en) | 2021-11-30 | 2022-03-23 | Method and device for controlling air conditioner, air conditioner, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111444492.XA CN114216230B (en) | 2021-11-30 | 2021-11-30 | Method and device for controlling air conditioner, air conditioner and storage medium |
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| CN114216230A true CN114216230A (en) | 2022-03-22 |
| CN114216230B CN114216230B (en) | 2023-05-16 |
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| WO (1) | WO2023097936A1 (en) |
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Also Published As
| Publication number | Publication date |
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| WO2023097936A1 (en) | 2023-06-08 |
| CN114216230B (en) | 2023-05-16 |
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