CN110594947B - Control method and control device of air conditioner and air conditioner - Google Patents
Control method and control device of air conditioner and air conditioner Download PDFInfo
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- CN110594947B CN110594947B CN201910933041.9A CN201910933041A CN110594947B CN 110594947 B CN110594947 B CN 110594947B CN 201910933041 A CN201910933041 A CN 201910933041A CN 110594947 B CN110594947 B CN 110594947B
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- 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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F11/88—Electrical aspects, e.g. circuits
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- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the application provides a control method and a control device of an air conditioner and the air conditioner, and relates to the field of air conditioning equipment, so that the heat dissipation effect of an electric control module of the air conditioner is enhanced, and the reliability of the air conditioner is ensured. The control method of the air conditioner is applied to the air conditioner, the air conditioner comprises a refrigerant pipeline and an electric control module arranged on the refrigerant pipeline, wherein the refrigerant pipeline is used for absorbing the heat productivity of the electric control module; a first electronic expansion valve is arranged on one side of the electronic control module on the refrigerant pipeline, and a second electronic expansion valve is arranged on the other side of the electronic control module on the refrigerant pipeline; the method comprises the following steps: detecting the temperature Tm of the electric control module; and when the temperature Tm of the electric control module meets the preset condition, controlling the opening degree of the first electronic expansion valve and/or the second electronic expansion valve, and adjusting the temperature of a refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve. For electronic expansion valve control.
Description
Technical Field
The embodiment of the invention relates to the field of air conditioning equipment, in particular to a control method and a control device of an air conditioner and the air conditioner.
Background
Along with the improvement of living standard of people, the variable frequency air conditioner is more and more widely applied. In the operation process of the air conditioner, part of heat productivity of the electric control module needs to be distributed, and the air conditioner can realize rapid temperature reduction and temperature rise under different operation states.
In the prior art, the electronic control module of the air conditioner is mainly cooled by arranging a radiator for the electronic control module, for example, a fin radiator is attached to the cooling surface of the electronic control module, so that the cost is increased, and meanwhile, the cooling effect of the electronic control module of the air conditioner is not ideal. At present, in order to avoid the situation, a main form is adopted to adopt a part of refrigerant pipelines to radiate the electric control module when the air conditioner operates, so that the cost is well saved, but because the refrigerant temperature of the pipelines cannot sense the heat productivity of the electric control module in real time, the reaction rate of the refrigerant pipelines is not high, on one hand, the heat productivity of the electric control module is more, the quick and effective cooling is difficult to realize, and the electric control module can be burnt out in serious cases; on the other hand, when the refrigerant pipeline is adopted for long-time heat dissipation, the temperature of the refrigerant pipeline is too low, so that condensed water enters the electric control module and damages the electric control module, the normal operation of the air conditioner is influenced, and the reliability of the air conditioner is also reduced.
Disclosure of Invention
In order to enhance the heat dissipation effect of an electric control module of an air conditioner and ensure the reliability of the air conditioner, embodiments of the application provide a control method and a control device of the air conditioner and the air conditioner.
In a first aspect, a control method of an air conditioner is provided, the air conditioner includes a refrigerant pipeline and an electric control module arranged on the refrigerant pipeline, wherein the refrigerant pipeline is used for absorbing heat of the electric control module; a first electronic expansion valve is arranged on one side of the electronic control module on the refrigerant pipeline, and a second electronic expansion valve is arranged on the other side of the electronic control module on the refrigerant pipeline; detecting the temperature Tm of the electronic control module; and when the temperature Tm of the electric control module meets the preset condition, controlling the opening degree of the first electronic expansion valve and/or the second electronic expansion valve, and adjusting the temperature of a refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve. Therefore, in the prior art, in the process that the air conditioner radiates the electric control module of the air conditioner through the radiator or the refrigerant pipeline, the heat productivity of the electric control module cannot be sensed in real time, so that the radiating effect of the electric control module of the air conditioner is reduced, and the reliability of the air conditioner is influenced; in the application, when an electric control module is arranged on a refrigerant pipeline of an air conditioner, a first electronic expansion valve and a second electronic expansion valve are respectively arranged on the refrigerant pipelines at two sides of the electric control module, and the electronic expansion valves are controlled in real time to adjust the temperature of the refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve when the temperature of the electric control module meets a preset condition by detecting the temperature of the electric control module; thereby avoid refrigerant pipeline high temperature or cross excessively to effectively absorb the heat that electronic control module gived off, can effectual reinforcing air conditioner's electronic control module's radiating effect and the reliability of assurance air conditioner.
In a second aspect, a control device of an air conditioner is provided, the air conditioner includes a refrigerant pipeline and an electronic control module disposed on the refrigerant pipeline, wherein the refrigerant pipeline is used for absorbing heat generated by the electronic control module; a first electronic expansion valve is arranged on one side of the electronic control module on the refrigerant pipeline, and a second electronic expansion valve is arranged on the other side of the electronic control module on the refrigerant pipeline; the temperature Tm is used for detecting the temperature Tm of the electronic control module; and when the temperature Tm of the electric control module meets the preset condition, controlling the opening degree of the first electronic expansion valve and/or the second electronic expansion valve, and adjusting the temperature of a refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve.
The third aspect provides a control device of an air conditioner, which is applied to the air conditioner and comprises a refrigerant pipeline and an electric control module arranged on the refrigerant pipeline, wherein the refrigerant pipeline is used for absorbing the heat of the electric control module; a first electronic expansion valve is arranged on one side of the electronic control module on the refrigerant pipeline, and a second electronic expansion valve is arranged on the other side of the electronic control module on the refrigerant pipeline; further comprising: the air conditioner comprises a processor and a sensor, wherein the processor and the sensor are coupled, and the processor is used for executing instructions to implement the control method of the air conditioner provided by the first aspect.
In a fourth aspect, a storage medium is provided, which stores instructions capable of implementing the control method of the air conditioner provided in the first aspect when the instructions are executed on a computer.
In a fifth aspect, a computer program product is provided, which contains instructions capable of implementing the control method of the air conditioner provided by the first aspect when the instructions are executed on a computer.
In a sixth aspect, an air conditioner is provided, which includes a refrigerant pipeline and an electronic control module disposed on the refrigerant pipeline, wherein the refrigerant pipeline is used for absorbing heat generated by the electronic control module; a first electronic expansion valve is arranged on one side of the electronic control module on the refrigerant pipeline, and a second electronic expansion valve is arranged on the other side of the electronic control module on the refrigerant pipeline; further comprising a control device of the air conditioner as in the second or third aspect.
The technical features of the second to sixth aspects are the same as or corresponding to those of the first aspect, and the technical effects achieved by the solutions are similar to those of the first aspect, and are not described herein again.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 4 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a control device of an air conditioner according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a control device of an air conditioner according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. The use of the terms first, second, etc. do not denote any order, and the terms first, second, etc. may be interpreted as names of the objects described. In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
In the field of air conditioners, an electric control module provided in an air conditioner is generally used for complex operations of air conditioner control, such as: the control system comprises wind speed control, wind direction control, compressor frequency conversion control, opening control of a throttle valve on a refrigerant pipeline, operation mode control of an air conditioner and the like. Therefore, the electronic control module usually generates heat, and in order to reduce the temperature of the electronic control module, in the prior art, the heat dissipation is mainly performed by arranging a heat sink for the electronic control module, for example, a fin heat sink is attached to the heat dissipation surface of the electronic control module, so that the cost is increased, and meanwhile, the heat dissipation effect of the electronic control module of the air conditioner is not ideal.
At present, in order to avoid the situation, the prior art mainly adopts a form that a part of refrigerant pipelines are adopted to radiate heat of the electronic control module when the air conditioner operates, so that the cost is well saved, but the refrigerant temperature of the pipelines cannot sense the heat productivity of the electronic control module in real time, so that the reaction rate of the refrigerant pipelines is not high, on one hand, the heat productivity of the electronic control module is more, the rapid and effective cooling is difficult to realize, and the electronic control module can be burnt out in serious cases; on the other hand, when the refrigerant pipeline is adopted for long-time heat dissipation, the temperature of the refrigerant pipeline is too low, so that condensed water enters the electric control module and damages the electric control module, the normal operation of the air conditioner is influenced, and the reliability of the air conditioner is also reduced.
In order to solve the above problems, an embodiment of the present application provides an air conditioner, which includes a refrigerant pipeline and an electronic control module disposed on the refrigerant pipeline, wherein the refrigerant pipeline is used for absorbing heat generated by the electronic control module; and a first electronic expansion valve is arranged on one side of the electronic control module on the refrigerant pipeline, and a second electronic expansion valve is arranged on the other side of the electronic control module on the refrigerant pipeline. As shown in fig. 1, the air conditioner specifically includes: the outdoor heat exchanger 11 is connected with a first end of the refrigerant radiating pipe 12 through the first electronic expansion valve 13, wherein a first end of the second electronic expansion valve 14 is connected with a second end of the refrigerant radiating pipe 12, and a second end of the second electronic expansion valve 14 is connected with a first end of the stop valve 15. The outdoor heat exchanger 11 of the air conditioner is provided in an outdoor unit of the air conditioner. In fig. 1, the first electronic expansion valve 13 is disposed on a side close to the outdoor heat exchanger 11, and the second electronic expansion valve 14 is disposed on a side far from the outdoor heat exchanger 11. The following embodiments are all described in the connection manner shown in fig. 1, and of course, the positions of the first electronic expansion valve 13 and the second electronic expansion valve 14 may be interchanged, and the control logic at this time is opposite, and those skilled in the art can reasonably predict the positions according to the description of the present application, and will not be described again.
Based on the air conditioner, the embodiment of the present application provides a control method of an air conditioner, which is shown in fig. 2 and includes the following steps:
201. and detecting the temperature Tm of the electric control module.
Typically, the temperature Tm of the electronic control module is detected by a temperature sensor provided on the electronic control module.
202. And when the temperature Tm of the electric control module meets the preset condition, controlling the opening degree of the first electronic expansion valve and/or the second electronic expansion valve, and adjusting the temperature of a refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve.
Therefore, in the prior art, in the process of radiating the electric control module of the air conditioner through the radiator or the refrigerant pipeline during the operation of the air conditioner, the heat productivity of the electric control module cannot be sensed in real time, so that the radiating effect of the electric control module of the air conditioner is reduced, and the reliability of the air conditioner is influenced; in the application, when an electric control module is arranged on a refrigerant pipeline of an air conditioner, a first electronic expansion valve and a second electronic expansion valve are respectively arranged on the refrigerant pipelines at two sides of the electric control module, and the electronic expansion valves are controlled in real time to adjust the temperature of the refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve when the temperature of the electric control module meets a preset condition by detecting the temperature of the electric control module; thereby avoid refrigerant pipeline high temperature or low excessively, the heat that the effective absorption electric control module gived off can effectual reinforcing air conditioner's electric control module's radiating effect and the reliability of assurance air conditioner.
Because the air conditioner has different operation modes in the operation, and the control of the opening degree of the electronic expansion valve is different under different operation modes, this application also provides the concrete operation mode of the control of the opening degree of the electronic expansion valve under different modes, for example: the operation mode of the air conditioner is divided into a cooling mode and a heating mode.
Referring to fig. 3, the cooling mode of the air conditioner specifically includes the following steps:
301. and controlling the air conditioner to start a refrigeration mode, controlling the opening degree of the first electronic expansion valve to be adjusted to the maximum, and controlling the opening degree of the second electronic expansion valve to meet the operation condition of the refrigeration mode.
In addition, in step 301, in the cooling mode, the compressor frequency a, the indoor fan speed C and the outdoor fan speed B are controlled to operate according to normal control, and the operation of the specific air conditioner is related to the indoor unit set temperature and the indoor environment temperature; the rotating speed of the outdoor fan is controlled to operate normally and is related to the temperature Tc of the outdoor coil and the temperature Ti of the outdoor environment. Referring to fig. 1, in the cooling mode, the refrigerant flows from the first electronic expansion valve to the second electronic expansion valve in the normal flow direction of the refrigerant.
302. And detecting the temperature Tm of the electric control module.
303. And after the air conditioner starts the refrigeration mode to run for a first preset time, if the delta T is determined to be T0-Tm is less than or equal to alpha, controlling the compressor to keep the current frequency.
Wherein T0 is the target temperature of the electric control module, delta T is greater than 0, and alpha is greater than 0. The first predetermined period of time may be 5min, for example, α may take an empirical value of 2.
304. And detecting the rotating speed of the outdoor fan, and controlling the first electronic expansion valve to reduce the opening degree when the outdoor fan reaches the highest rotating speed.
In step 304, the Tg of the refrigerant pipeline may be controlled to decrease by 2 ℃.
When the first electronic expansion valve is controlled to reduce the opening degree, the method further comprises the following steps:
305. and when determining that the delta T is larger than the alpha, controlling the opening degree of the first electronic expansion valve to keep the current opening degree for a second preset time period, and increasing the opening degree of the first electronic expansion valve until the delta T is equal to the alpha.
The second predetermined length of time may be set to 3min in step 305.
306. And when determining that the delta T is less than the alpha, controlling the first electronic expansion valve to continuously reduce the opening degree.
In step 306, the inlet temperature of the refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve is reduced by the throttling and pressure reducing function of the electronic expansion valve, so as to absorb and reduce the temperature of the electronic control module.
307. When the opening degree of the first electronic expansion valve is reduced to a first preset opening degree, if delta T is determined to be smaller than alpha, the first electronic expansion valve is kept at the first preset opening degree, the frequency of the compressor is controlled to be reduced, and the current frequency of the compressor is kept until the delta T is larger than or equal to the alpha.
For example, the first predetermined opening degree may be selected to be 100 steps. In step 307, the compressor is controlled to decrease in frequency by 2 ℃ according to the control refrigerant line Tg.
308. And continuously adjusting the opening degree of the first electronic expansion valve until delta T is equal to alpha.
At this moment, if the frequency of the compressor is high, the heat productivity of the electronic control module is high, and the air conditioner can exert the self heat exchange capacity to the maximum extent. In addition, an effective range is set for the temperature control of the electric control module through delta T-alpha, so that the temperature of a refrigerant pipeline is not too high, the heat of the electric control module can be effectively absorbed, and the heat dissipation effect of the electric control module of the air conditioner is effectively enhanced; in addition, because delta T is alpha for the temperature control of electric control module has set up an effectual scope for the temperature of refrigerant pipeline is unlikely to hang down excessively, can not cause the refrigerant pipeline appearance comdenstion water of electric control module department, avoids the damage to electric control module, has improved the reliability of air conditioner.
Referring to fig. 4, the heating mode of the air conditioner specifically includes the following steps:
401. and controlling the air conditioner to start a heating mode, controlling the opening degree of the second electronic expansion valve to be adjusted to the maximum, and controlling the opening degree of the first electronic expansion valve to meet the operating conditions of the heating mode.
In addition, in step 401, in the heating mode, the compressor frequency a, the indoor fan rotation speed C and the outdoor fan rotation speed B are controlled, and the operation is controlled normally, wherein the operation of the specific air conditioner is related to the indoor unit set temperature and the indoor environment temperature; the rotating speed of the outdoor fan is controlled to operate normally and is related to the temperature Tc of the outdoor coil and the temperature Ti of the outdoor environment. Referring to fig. 1, in the heating mode, the refrigerant flows from the second electronic expansion valve to the first electronic expansion valve in the normal flow direction of the refrigerant.
402. And detecting the temperature Tm of the electric control module.
403. And after the air conditioner starts the heating mode to operate for a third preset time period, if the delta T is determined to be T0-Tm is less than or equal to alpha and the delta T1 is determined to be Tg-Ti is more than or equal to 0, controlling the compressor to keep the current frequency.
Wherein Tg is the temperature of a refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve, Ti is the ambient temperature, delta T is more than 0, and alpha is more than 0. The third predetermined period of time may be 5min, for example, α may take an empirical value of 2.
404. And detecting the rotating speed of the outdoor fan, and controlling the second electronic expansion valve to reduce the opening degree when the outdoor fan reaches the highest rotating speed.
In step 404, the Tg of the refrigerant pipeline may be controlled to decrease by 2 ℃.
When the second electronic expansion valve is controlled to reduce the opening degree, the method further comprises the following steps:
405. and when determining that the delta T is larger than the alpha and the delta T1 is larger than or equal to 0, controlling the opening of the second electronic expansion valve to keep the current opening for a fourth preset time period, and increasing the opening of the second electronic expansion valve until the delta T is equal to alpha.
The fourth predetermined length of time may be set to 3min in step 405.
406. And when determining that the delta T is less than the alpha and the delta T1 is more than or equal to 0, controlling the second electronic expansion valve to continuously reduce the opening degree.
In step 406, the inlet temperature of the refrigerant pipeline between the second electronic expansion valve and the first electronic expansion valve is reduced by the throttling and depressurizing functions of the electronic expansion valves, so as to absorb and reduce the temperature of the electronic control module.
407. When determining that the delta T is larger than or equal to alpha and the delta T1 is smaller than 0, controlling the second electronic expansion valve to increase the opening degree so that the delta T1 is larger than or equal to 0; and when the second electronic expansion valve is determined to be increased to the maximum opening degree and the indoor unit fan reaches the highest rotating speed, controlling to reduce the frequency of the compressor and controlling the opening degree of the first electronic expansion valve so that delta T is alpha and delta T1 is not less than 0.
In step 407, when the indoor unit fan reaches the maximum speed, the frequency of the compressor is decreased, and the control of the first electronic expansion valve is turned on.
408. When determining that delta T is less than alpha and delta T1 is less than 0, controlling the second electronic expansion valve to increase the opening degree so that delta T1 is more than or equal to 0; and when the second electronic expansion valve is determined to be increased to the maximum opening degree and the indoor unit fan reaches the highest rotating speed, controlling to reduce the frequency of the compressor and controlling the opening degree of the first electronic expansion valve so that delta T is alpha and delta T1 is not less than 0.
In step 408, when the indoor unit fan reaches the maximum speed, the frequency of the compressor is decreased and the control of the first electronic expansion valve is turned on.
409. And when the opening degree of the second electronic expansion valve is reduced to a second preset opening degree, if delta T is determined to be less than alpha, keeping the second electronic expansion valve at the second preset opening degree, and controlling the compressor to reduce the frequency until the delta T is more than or equal to the alpha, and keeping the current frequency of the compressor.
For example, the second predetermined opening degree may be selected to be 100 steps. In step 409, the compressor is controlled to decrease in frequency by 2 ℃ according to the control refrigerant pipeline Tg.
410. And adjusting the opening degree of the second electronic expansion valve until the delta T is alpha.
At this moment, if the frequency of the compressor is high, the heat productivity of the electronic control module is high, and the air conditioner can exert the self heat exchange capacity to the maximum extent. In addition, an effective range is set for the temperature control of the electric control module through delta T-alpha, so that the temperature of a refrigerant pipeline is not too high, the heat of the electric control module can be effectively absorbed, and the heat dissipation effect of the electric control module of the air conditioner is effectively enhanced; in addition, because delta T is alpha for the temperature control of electric control module has set up an effectual scope for the temperature of refrigerant pipeline is unlikely to hang down excessively, can not cause the refrigerant pipeline appearance comdenstion water of electric control module department, avoids the damage to electric control module, has improved the reliability of air conditioner.
It can be understood that the air conditioner has different working modes and different specific operations on the electronic expansion valve, and when the air conditioner is in operation, the opening degree of the electronic expansion valve is controlled according to the detected temperature of the electronic control module in different working modes of the air conditioner, so that the temperature of the refrigerant pipeline is adjusted in real time.
Referring to fig. 5, an embodiment of the present invention further provides a control device for an air conditioner, configured to implement the control method for the air conditioner corresponding to any one of the embodiments in fig. 2 to 4, and specifically, the control device is applied to the air conditioner, and includes:
the detection module 51 is used for detecting the temperature Tm of the electronic control module;
and the processing module 52 is configured to control an opening degree of the first electronic expansion valve and/or the second electronic expansion valve when it is determined that the temperature Tm of the electronic control module satisfies a predetermined condition, and adjust the temperature of the refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve.
Optionally, the processing module 52 is further configured to control the air conditioner to start a refrigeration mode before detecting the temperature Tm of the electronic control module, control the opening of the first electronic expansion valve to be adjusted to the maximum, and control the opening of the second electronic expansion valve to meet the operation condition of the refrigeration mode. The processing module 52 is specifically configured to, after the air conditioner starts the refrigeration mode to operate for a first predetermined time period, control the compressor to maintain the current frequency if it is determined that δ T ═ T0-Tm is not greater than α, where T0 is a target temperature of the electronic control module, δ T is greater than 0, and α is greater than 0; the processing module 52 is specifically configured to detect the rotation speed of the outdoor fan at the detection module, and control the first electronic expansion valve to decrease the opening degree when it is determined that the outdoor fan reaches the highest rotation speed.
Optionally, the processing module 52 is configured to, when controlling the first electronic expansion valve to decrease the opening degree, when determining that δ T > α, and after controlling the opening degree of the first electronic expansion valve to maintain the current opening degree for a second predetermined time period, increase the opening degree of the first electronic expansion valve until δ T is equal to α; and when determining that the delta T is less than the alpha, the control unit is also used for controlling the first electronic expansion valve to continuously reduce the opening degree.
Optionally, the processing module 52 is further configured to, when the opening degree of the first electronic expansion valve is decreased to a first predetermined opening degree, if it is determined that δ T is smaller than α, maintain the first electronic expansion valve at the first predetermined opening degree, and control the compressor to reduce the frequency until δ T is greater than or equal to α, maintain the current frequency of the compressor; and adjusting the opening degree of the first electronic expansion valve until delta T is equal to alpha.
Optionally, the processing module 52 is further configured to, before detecting the temperature Tm of the electronic control module, control the air conditioner to start the heating mode, control the opening of the second electronic expansion valve to be adjusted to the maximum, and control the opening of the first electronic expansion valve to meet the operating condition of the heating mode; the processing module 52 is specifically configured to, after the air conditioner starts the heating mode and operates for a third predetermined time period, control the compressor to maintain the current frequency if it is determined that δ T-T0-Tm is equal to or less than α and δ T1-Tg-Ti is equal to or greater than 0, where Tg is a temperature of a refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve, Ti is an ambient temperature, δ T is greater than 0, and α is greater than 0; the processing module 52 is specifically configured to detect the rotation speed of the outdoor fan by the detection module, and control the second electronic expansion valve to decrease the opening degree when it is determined that the outdoor fan reaches the highest rotation speed.
Optionally, the processing module 52 is further configured to, when controlling the opening degree of the second electronic expansion valve to decrease, determine that δ T > α, and δ T1 is greater than or equal to 0, and after controlling the opening degree of the second electronic expansion valve to maintain the current opening degree for a fourth predetermined time period, increase the opening degree of the second electronic expansion valve until δ T is equal to α; when determining that the delta T is less than the alpha and the delta T1 is more than or equal to 0, controlling the second electronic expansion valve to continuously reduce the opening; when determining that the delta T is larger than or equal to alpha and the delta T1 is smaller than 0, controlling the second electronic expansion valve to increase the opening degree so that the delta T1 is larger than or equal to 0; the processing module 52 is further configured to, when it is determined that the second electronic expansion valve is increased to the maximum opening degree and the indoor unit fan reaches the highest rotation speed, control to decrease the frequency of the compressor and control the opening degree of the first electronic expansion valve so that δ T is α and δ T1 is greater than or equal to 0; when determining that delta T is less than alpha and delta T1 is less than 0, controlling the second electronic expansion valve to increase the opening degree so that delta T1 is more than or equal to 0; and when the second electronic expansion valve is determined to be increased to the maximum opening degree and the indoor unit fan reaches the highest rotating speed, controlling to reduce the frequency of the compressor and controlling the opening degree of the first electronic expansion valve so that delta T is alpha and delta T1 is not less than 0.
Optionally, the processing module 52 is further configured to, when the opening degree of the second electronic expansion valve is decreased to a second predetermined opening degree, if it is determined that δ T is smaller than α, maintain the second electronic expansion valve at the second predetermined opening degree, and further configured to control the compressor to reduce the frequency until δ T is greater than or equal to α, maintain the current frequency of the compressor; and adjusting the opening degree of the second electronic expansion valve until delta T is equal to alpha.
The technical problems that can be solved by the control device of the air conditioner and the technical effects that can be realized can refer to the description of the control method of the air conditioner, and are not repeated herein.
In another scheme, the processing module 52 of the control device of the air conditioner may be implemented by one or more processors, and the detection module 51 implements temperature detection by using a sensor; referring to fig. 6, a control device of an air conditioner is provided, which is applied to an air conditioner, and the air conditioner includes a refrigerant pipeline and an electronic control module disposed on the refrigerant pipeline, wherein the refrigerant pipeline is used for absorbing heat generated by the electronic control module; a first electronic expansion valve is arranged on one side of the electronic control module on the refrigerant pipeline, and a second electronic expansion valve is arranged on the other side of the electronic control module on the refrigerant pipeline; the control device of the air conditioner includes: a processor 91 and a sensor 92, wherein the processor 91 is coupled to the sensor 92, and the processor 91 is configured to execute instructions to implement the control method described above. The exemplary sensor 92, processor 91 may be coupled by a bus 93.
The processor 91 may be a general processing unit (CPU), a controller MCU, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of programs according to the present disclosure.
Of course, the processor 91 may also be integrated with a storage device for computer programs or instructions for executing the control method, or the storage device may be separately provided, for example, as shown in fig. 6, the memory 94 may be separately provided. The memory 94 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
The processor 91 is configured to control the opening of the electronic expansion valve according to the temperature of the electronic control module detected by the sensor 92.
An embodiment of the present invention further provides a storage medium, which stores instructions, and when the instructions are executed on a computer, the control method for an air conditioner provided in the first aspect above can be implemented.
An embodiment of the present invention further provides a computer program product, where the computer program product includes instructions, and when the instructions are executed on a computer, the method for controlling an air conditioner according to the first aspect can be implemented.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the methods of the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (11)
1. The control method of the air conditioner comprises a refrigerant pipeline and an electric control module arranged on the refrigerant pipeline, wherein the refrigerant pipeline is used for absorbing the heat productivity of the electric control module; the refrigerant pipeline is provided with a first electronic expansion valve at one side of the electric control module, and a second electronic expansion valve at the other side of the electric control module; the control method of the air conditioner comprises the following steps:
detecting the temperature Tm of the electronic control module;
when the temperature Tm of the electronic control module is determined to meet a preset condition, controlling the opening degree of the first electronic expansion valve and/or the second electronic expansion valve, and adjusting the temperature of a refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve;
the first electronic expansion valve is arranged at one side close to the outdoor heat exchanger, and the second electronic expansion valve is arranged at one side far away from the outdoor heat exchanger; before detecting the temperature Tm of the electronic control module, the method further comprises:
controlling the air conditioner to start a refrigeration mode, controlling the opening degree of the first electronic expansion valve to be adjusted to the maximum, and controlling the opening degree of the second electronic expansion valve to meet the operation condition of the refrigeration mode;
when the temperature Tm of the electronic control module is determined to meet a preset condition, controlling the opening degree of the first electronic expansion valve and/or the second electronic expansion valve, and adjusting the temperature of a refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve, wherein the method comprises the following steps:
after the air conditioner starts a refrigeration mode to run for a first preset time, if delta T is determined to be T0-Tm and is not more than alpha, controlling a compressor to keep the current frequency, wherein T0 is the target temperature of the electric control module, delta T is more than 0, and alpha is more than 0;
detecting the rotating speed of an outdoor fan, and controlling the first electronic expansion valve to reduce the opening degree when the outdoor fan is determined to reach the highest rotating speed;
when the delta T is larger than alpha, controlling the opening of the first electronic expansion valve to keep the current opening for a second preset time period, and increasing the opening of the first electronic expansion valve until the delta T is larger than alpha;
and when determining that the delta T is less than alpha, controlling the first electronic expansion valve to continuously reduce the opening degree.
2. The control method of the air conditioner according to claim 1, wherein when the opening degree of the first electronic expansion valve is decreased to a first predetermined opening degree, if it is determined that δ T < α, the first electronic expansion valve is maintained at the first predetermined opening degree, and the compressor is controlled to decrease the frequency until δ T ≧ α, the current frequency of the compressor is maintained;
and adjusting the opening degree of the first electronic expansion valve until the delta T is alpha.
3. The control method of an air conditioner according to claim 1, wherein the first electronic expansion valve is disposed at a side close to an outdoor heat exchanger, and the second electronic expansion valve is disposed at a side far from the outdoor heat exchanger; before the detecting the temperature Tm of the electronic control module, the method further comprises:
controlling the air conditioner to start a heating mode, controlling the opening degree of the second electronic expansion valve to be adjusted to the maximum, and controlling the opening degree of the first electronic expansion valve to meet the operating conditions of the heating mode;
when the temperature Tm of the electronic control module is determined to meet a preset condition, controlling the opening degree of the first electronic expansion valve and/or the second electronic expansion valve, and adjusting the temperature of a refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve, wherein the method comprises the following steps:
after the air conditioner starts a heating mode to operate for a third preset time, if delta T is determined to be T0-Tm and is not more than alpha, and delta T1 is determined to be Tg-Ti and is not less than 0, controlling the compressor to keep the current frequency, wherein Tg is the temperature of a refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve, Ti is the ambient temperature, delta T is more than 0, and alpha is more than 0;
and detecting the rotating speed of the outdoor fan, and controlling the second electronic expansion valve to reduce the opening degree when the outdoor fan reaches the highest rotating speed.
4. The control method of an air conditioner according to claim 3, wherein when controlling the second electronic expansion valve to decrease the opening degree, the method further comprises:
when the fact that the delta T is larger than alpha and the delta T1 is larger than or equal to 0 is determined, after the opening of the second electronic expansion valve is controlled to keep the current opening for a fourth preset time period, the opening of the second electronic expansion valve is increased until the delta T is equal to alpha;
when determining that the delta T is less than alpha and the delta T1 is more than or equal to 0, controlling the second electronic expansion valve to continuously reduce the opening degree;
when determining that the delta T is larger than or equal to alpha and the delta T1 is smaller than 0, controlling the second electronic expansion valve to increase the opening degree so that the delta T1 is larger than or equal to 0; when the second electronic expansion valve is determined to be increased to the maximum opening and the indoor unit fan reaches the highest rotating speed, controlling to reduce the frequency of the compressor and controlling the opening of the first electronic expansion valve so that delta T is alpha and delta T1 is not less than 0;
when determining that the delta T is less than alpha and the delta T1 is less than 0, controlling the second electronic expansion valve to increase the opening degree so that the delta T1 is more than or equal to 0; and when the second electronic expansion valve is determined to be increased to the maximum opening degree and the indoor unit fan reaches the highest rotating speed, controlling to reduce the frequency of the compressor and controlling the opening degree of the first electronic expansion valve so that delta T is alpha and delta T1 is not less than 0.
5. The control method of the air conditioner according to claim 3 or 4, wherein when the opening degree of the second electronic expansion valve is decreased to a second predetermined opening degree, if it is determined that δ T < α, the second electronic expansion valve is maintained at the second predetermined opening degree, the compressor is controlled to reduce the frequency until δ T ≧ α, the current frequency of the compressor is maintained;
and adjusting the opening degree of the second electronic expansion valve until the delta T is alpha.
6. A control device of an air conditioner comprises a refrigerant pipeline and an electric control module arranged on the refrigerant pipeline, wherein the refrigerant pipeline is used for absorbing the heat productivity of the electric control module; the refrigerant pipeline is provided with a first electronic expansion valve at one side of the electric control module, and a second electronic expansion valve at the other side of the electric control module; the control device of the air conditioner includes:
the detection module is used for detecting the temperature Tm of the electronic control module;
the processing module is used for controlling the opening degree of the first electronic expansion valve and/or the second electronic expansion valve and adjusting the temperature of a refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve when the temperature Tm of the electronic control module detected by the detection module is determined to meet a preset condition;
the first electronic expansion valve is arranged at one side close to the outdoor heat exchanger, and the second electronic expansion valve is arranged at one side far away from the outdoor heat exchanger; the processing module is further used for controlling the air conditioner to start a refrigeration mode, controlling the opening degree of the first electronic expansion valve to be adjusted to the maximum, and controlling the opening degree of the second electronic expansion valve to meet the operation condition of the refrigeration mode before the detection module detects the temperature Tm of the electronic control module;
the processing module is specifically used for controlling the compressor to keep the current frequency after the air conditioner starts the refrigeration mode to operate for a first preset time and when the fact that delta T is equal to T0-Tm and is not larger than alpha is determined, wherein T0 is the target temperature of the electronic control module, delta T is larger than 0, and alpha is larger than 0;
the processing module is specifically used for detecting the rotating speed of an outdoor fan at the detection module, and controlling the first electronic expansion valve to reduce the opening degree when the outdoor fan is determined to reach the highest rotating speed;
the processing module is used for controlling the opening degree of the first electronic expansion valve to be kept at the current opening degree for a second preset time period when the opening degree of the first electronic expansion valve is controlled to be reduced and the δ T is more than α, and then increasing the opening degree of the first electronic expansion valve until the δ T is equal to α; and when determining that the delta T is less than alpha, the controller is also used for controlling the first electronic expansion valve to continuously reduce the opening degree.
7. The control device of the air conditioner as claimed in claim 6, wherein the processing module is further configured to, when the opening degree of the first electronic expansion valve is decreased to a first predetermined opening degree, if it is determined that δ T < α, further configured to maintain the first electronic expansion valve at the first predetermined opening degree, control the compressor to decrease the frequency until δ T ≧ α, maintain the current frequency of the compressor; and adjusting the opening degree of the first electronic expansion valve until the delta T is alpha.
8. The control device of an air conditioner according to claim 7, wherein the first electronic expansion valve is disposed on a side close to an outdoor heat exchanger, and the second electronic expansion valve is disposed on a side far from the outdoor heat exchanger; the processing module is further configured to control the air conditioner to start a heating mode before the detection module detects the temperature Tm of the electronic control module, control the opening of the second electronic expansion valve to be adjusted to the maximum, and control the opening of the first electronic expansion valve to meet the operating condition of the heating mode;
the processing module is specifically configured to, after the air conditioner starts a heating mode to operate for a third predetermined time, control the compressor to maintain a current frequency if δ T-T0-Tm is determined to be equal to or less than α and δ T1-Tg-Ti is determined to be equal to or greater than 0, where Tg is a temperature of a refrigerant pipeline between the first electronic expansion valve and the second electronic expansion valve, Ti is an ambient temperature, δ T is greater than 0, and α is greater than 0;
the processing module is specifically configured to detect the rotation speed of the outdoor fan at the detection module, and control the second electronic expansion valve to reduce the opening degree when it is determined that the outdoor fan reaches the highest rotation speed.
9. The control device of the air conditioner according to claim 8, wherein the processing module is further configured to, when controlling the second electronic expansion valve to decrease the opening degree, determine that δ T > α, and δ T1 is greater than or equal to 0, and further configured to, after controlling the opening degree of the second electronic expansion valve to maintain the current opening degree for a fourth predetermined time period, increase the opening degree of the second electronic expansion valve until δ T ═ α;
the processing module is further used for controlling the second electronic expansion valve to continuously reduce the opening degree when the delta T is determined to be less than alpha and delta T1 is determined to be more than or equal to 0;
the processing module is further used for controlling the second electronic expansion valve to increase the opening degree when the delta T is determined to be larger than or equal to alpha and the delta T1 is smaller than 0, so that the delta T1 is larger than or equal to 0;
the processing module is further used for controlling the frequency of the compressor to be reduced and controlling the opening degree of the first electronic expansion valve to enable delta T to be alpha and delta T1 to be larger than or equal to 0 when it is determined that the second electronic expansion valve is increased to the maximum opening degree and the fan of the indoor unit reaches the highest rotating speed;
the processing module is further used for controlling the second electronic expansion valve to increase the opening degree when determining that the delta T is less than alpha and the delta T1 is less than 0, so that the delta T1 is greater than or equal to 0; and when the second electronic expansion valve is determined to be increased to the maximum opening degree and the indoor unit fan reaches the highest rotating speed, controlling to reduce the frequency of the compressor and controlling the opening degree of the first electronic expansion valve so that delta T is alpha and delta T1 is not less than 0.
10. The control device of the air conditioner according to claim 8 or 9, wherein the processing module is further configured to, when the opening degree of the second electronic expansion valve is decreased to a second predetermined opening degree, if it is determined that δ T < α, maintain the second electronic expansion valve at the second predetermined opening degree, and further configured to control the compressor to decrease the frequency until δ T ≧ α, maintain the current frequency of the compressor; and adjusting the opening degree of the second electronic expansion valve until the delta T is alpha.
11. An air conditioner comprises a refrigerant pipeline and an electric control module arranged on the refrigerant pipeline, wherein the refrigerant pipeline is used for absorbing the heat productivity of the electric control module; the refrigerant pipeline is provided with a first electronic expansion valve at one side of the electric control module, and a second electronic expansion valve at the other side of the electric control module; the air conditioner further comprises a control device of the air conditioner as claimed in any one of claims 6 to 10.
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| CN111503757A (en) * | 2020-04-30 | 2020-08-07 | 宁波奥克斯电气股份有限公司 | Heat sink control method, air conditioner, and computer-readable storage medium |
| CN112566464B (en) * | 2020-12-10 | 2022-04-12 | 青岛海信日立空调系统有限公司 | Air conditioner |
| CN112728655B (en) * | 2020-12-28 | 2022-06-14 | 宁波奥克斯电气股份有限公司 | Outdoor unit electric control temperature rise control method and device and air conditioner |
| CN113758071B (en) * | 2021-08-31 | 2023-04-18 | 美的集团武汉暖通设备有限公司 | Anti-condensation control method for refrigerant heat dissipation module of water machine system |
| CN114811892A (en) * | 2022-03-31 | 2022-07-29 | 青岛海尔空调器有限总公司 | Variable frequency air conditioner and control method and control device thereof |
| CN115031396A (en) * | 2022-06-28 | 2022-09-09 | 广东美的制冷设备有限公司 | Outdoor unit control method and device of air conditioning system, outdoor unit and air conditioning system |
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