CN114061031A - Air conditioner defrosting control method and device and air conditioner - Google Patents
Air conditioner defrosting control method and device and air conditioner Download PDFInfo
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- CN114061031A CN114061031A CN202111265917.0A CN202111265917A CN114061031A CN 114061031 A CN114061031 A CN 114061031A CN 202111265917 A CN202111265917 A CN 202111265917A CN 114061031 A CN114061031 A CN 114061031A
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- 238000010257 thawing Methods 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000010438 heat treatment Methods 0.000 claims abstract description 61
- 238000004378 air conditioning Methods 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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
- F24F11/67—Switching between heating and cooling modes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner defrosting control method, a control device and an air conditioner, wherein the air conditioner defrosting control method comprises the following steps: starting a heating mode of the air conditioner, and acquiring initial operation power and current operation power of the compressor under the condition that the first outdoor heat exchanger operates; and under the condition that the current running power is smaller than the initial running power, controlling the air conditioner to execute defrosting operation on the first outdoor heat exchanger and controlling the second outdoor heat exchanger to start. According to the relationship between the initial operating power and the current operating power of the compressor in the heating mode, the air conditioner is controlled to defrost the first outdoor heat exchanger, the second outdoor heat exchanger is controlled to start, and heat is continuously supplied to the indoor environment; the method is simple, the first outdoor heat exchanger is defrosted under the condition that heating of the indoor environment is not influenced, the influence on the comfort level of a user due to the fact that the temperature of the indoor environment fluctuates when the first outdoor heat exchanger is defrosted is avoided, and therefore the experience of the user is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner defrosting control method, an air conditioner defrosting control device and an air conditioner.
Background
With the rapid development of society and the continuous improvement of living standard of people, the requirements of people on living quality are higher and higher, and the air conditioner as an important electric device gradually enters every family and is used by people. Generally, an air conditioner is well known to have a refrigerating and heating function, but when the air conditioner is used in winter, frost is formed outside along with long-time operation of air conditioner heating, and the frost is more formed when the operation time is longer, the heating effect of the air conditioner is seriously influenced, even the air conditioner compressor is damaged, and the performance of the air conditioner is reduced.
The air conditioner can be seriously frosted when running for a period of time during low-temperature heating, and the outdoor unit of the air conditioner needs to be defrosted at the moment; in the prior art, the defrosting of the air conditioner is realized by switching the four-way valve to change the heating mode into the cooling mode, but the problem that the heat cannot be sent out indoors during the defrosting, so that the indoor environment temperature fluctuates and the comfort of a user is influenced is solved.
Disclosure of Invention
The invention provides an air conditioner defrosting control method, a control device and an air conditioner, which are used for solving the problems that in the prior art, heat cannot be sent out indoors during defrosting, so that the indoor environment temperature fluctuates and the comfort of a user is influenced.
The invention provides an air conditioner defrosting control method, which comprises the following steps: starting a heating mode of the air conditioner, and acquiring initial operation power and current operation power of the compressor under the condition that the first outdoor heat exchanger operates; and under the condition that the current operating power is smaller than the initial operating power, controlling the air conditioner to execute defrosting operation on the first outdoor heat exchanger, and controlling the second outdoor heat exchanger to start.
According to the defrosting control method of the air conditioner provided by the invention, under the condition that the current operation power is less than the initial operation power, the air conditioner is controlled to execute defrosting operation on the first outdoor heat exchanger, and the control of the second outdoor heat exchanger to start comprises the following steps: determining a difference between adjacent current operating powers; and in the continuous time, under the condition that the difference value is in an increasing trend, controlling the air conditioner to defrost the first outdoor heat exchanger and controlling the second outdoor heat exchanger to start.
According to the defrosting control method for the air conditioner, provided by the invention, in continuous time, under the condition that the difference value is in an increasing trend, the air conditioner is controlled to execute defrosting operation on the first outdoor heat exchanger, and the control of the second outdoor heat exchanger to start further comprises the following steps: and controlling the air conditioner to execute defrosting operation on the first outdoor heat exchanger and control the second outdoor heat exchanger to start under the condition that the difference value is in an increasing trend and is greater than or equal to the preset power.
According to the defrosting control method of the air conditioner, the step of controlling the air conditioner to execute defrosting operation on the first outdoor heat exchanger comprises the following steps: and controlling the heating device to heat the first outdoor heat exchanger.
According to the defrosting control method of the air conditioner, the step of controlling the heating device to heat the first outdoor heat exchanger specifically comprises the following steps: acquiring the current coil temperature of the first outdoor heat exchanger; under the condition that the temperature of the coil pipe is lower than a first preset temperature, controlling a heating device to heat a first outdoor heat exchanger at a first preset power; when the temperature of the coil pipe is greater than or equal to the first preset temperature and less than a second preset temperature, controlling a heating device to heat a first outdoor heat exchanger at a second preset power; when the temperature of the coil pipe is greater than or equal to the second preset temperature and less than the frost point temperature, controlling a heating device to heat a first outdoor heat exchanger at a third preset power; the first preset power is larger than the second preset power, and the second preset power is larger than the third preset power.
The defrosting control method of the air conditioner provided by the invention further comprises the following steps: controlling the defrosting operation of the air conditioner to be closed under the condition that the defrosting time is less than or equal to a first preset time and the temperature of the coil is greater than or equal to a third preset temperature; or when the defrosting time is more than or equal to a second preset time, controlling the defrosting operation of the air conditioner to be closed, wherein the second preset time is more than the first preset time.
According to the air conditioner defrosting control method provided by the invention, under the condition that the defrosting time is less than or equal to the first preset time and the temperature of the coil is greater than or equal to the third preset temperature, the step of controlling the defrosting operation of the air conditioner to be closed further comprises the following steps: and controlling the defrosting operation of the air conditioner to be closed under the conditions that the defrosting time is less than or equal to a third preset time and the temperature of the coil pipe is greater than or equal to a fourth preset temperature, wherein the third preset time is less than the first preset time, and the fourth preset temperature is greater than the third preset temperature.
The present invention also provides an air conditioner control device, including: an acquisition module: the first outdoor heat exchanger is used for obtaining the initial running power and the current running power of the compressor under the condition that the first outdoor heat exchanger runs in the heating mode of the air conditioner; a control module: and the control unit is used for controlling the air conditioner to execute defrosting operation on the first outdoor heat exchanger and controlling the second outdoor heat exchanger to start under the condition that the current operating power is less than the initial operating power.
The invention also provides an air conditioner which comprises the air conditioner control device.
The invention also provides an electronic device, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor executes the program to realize the steps of the air conditioner defrosting control method.
According to the air conditioner defrosting control method, the control device and the air conditioner, the frosting condition of the current first outdoor heat exchanger is known by acquiring the initial operation power and the current operation power of the compressor in the heating mode; under the condition that the current operating power is smaller than the initial operating power, controlling the air conditioner to defrost the first outdoor heat exchanger, and simultaneously controlling the second outdoor heat exchanger to start to continuously supply heat to the indoor environment; the indoor heat exchanger is connected with the first outdoor heat exchanger by controlling the air conditioner to disconnect the indoor heat exchanger from the first outdoor heat exchanger, the indoor heat exchanger is connected with the second outdoor heat exchanger, the indoor environment is continuously heated, and then the first outdoor heat exchanger is defrosted; the method for controlling the air conditioner to defrost the first outdoor heat exchanger according to the current compressor power change is simple, the first outdoor heat exchanger is defrosted under the condition that indoor environment heating is not influenced, the influence on the comfort level of a user due to indoor environment temperature fluctuation caused by defrosting of the first outdoor heat exchanger is avoided, and the user experience is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart of a defrosting control method for an air conditioner provided by the invention;
FIG. 2 is a schematic diagram of an air conditioner defrost system according to the present invention;
FIG. 3 is a schematic structural diagram of an electronic device provided by the present invention;
reference numerals:
1: an indoor heat exchanger; 2: a first outdoor heat exchanger; 3: a second outdoor heat exchanger;
4: a compressor; 5: a heating device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
The following describes an air conditioner defrosting control method, a control device and an air conditioner provided by the invention with reference to fig. 1 to 3.
The defrosting control method for the air conditioner provided by the embodiment comprises the following steps: step 100: starting a heating mode of the air conditioner, and acquiring initial operation power and current operation power of the compressor under the condition that the first outdoor heat exchanger operates; step 200: and under the condition that the current running power is smaller than the initial running power, controlling the air conditioner to execute defrosting operation on the first outdoor heat exchanger and controlling the second outdoor heat exchanger to start.
The air conditioner that this embodiment provided includes indoor heat exchanger, first outdoor heat exchanger and second outdoor heat exchanger, starts the air conditioner, and indoor heat exchanger is connected with first outdoor heat exchanger and is realized heating indoor environment.
Referring to fig. 1, in the air conditioner defrosting control method provided in this embodiment, step 100, a heating mode of an air conditioner is started, and in a case where a first outdoor heat exchanger is operated, an initial operating power and a current operating power of a compressor are obtained; specifically, the heating mode of the air conditioner is started, the indoor heat exchanger, the first outdoor heat exchanger and the compressor form a circulation flow path, and the power monitoring device is used for detecting the operating power of the compressor and acquiring the power of the compressor when the air conditioner starts to operate, namely the power P of the compressor is the initial operating power P0(ii) a During the operation process, the current operation power of the compressor is detected in real time, namely the current operation power P of the compressor is detectedn。
Further, in step 200, under the condition that the current operation power is less than the initial operation power, the air conditioner is controlled to execute defrosting operation on the first outdoor heat exchanger, and the second chamber is controlledStarting an external heat exchanger; specifically, the power monitoring device detects the running power of the compressor in real time, and detects the current running power P of the compressornLower than the initial operating power P of the compressor0Under the condition, the first outdoor heat exchanger is frosted, the operation of the compressor is hindered, the air conditioner is controlled to execute defrosting operation on the first outdoor heat exchanger, meanwhile, the second outdoor heat exchanger is controlled to be started, heat is continuously supplied to the indoor environment, the effects that the first outdoor heat exchanger for defrosting does not heat, and the second outdoor heat exchanger for heating does not defrost are achieved, namely, defrosting is not stopped.
In the embodiment, the frosting condition of the current first outdoor heat exchanger is known by acquiring the initial operating power and the current operating power of the compressor in the heating mode; under the condition that the current operating power is smaller than the initial operating power, controlling the air conditioner to defrost the first outdoor heat exchanger, and simultaneously controlling the second outdoor heat exchanger to start to continuously supply heat to the indoor environment; the indoor heat exchanger is connected with the first outdoor heat exchanger by controlling the air conditioner to disconnect the indoor heat exchanger from the first outdoor heat exchanger, the indoor heat exchanger is connected with the second outdoor heat exchanger, the indoor environment is continuously heated, and then the first outdoor heat exchanger is defrosted; the method for controlling the air conditioner to defrost the first outdoor heat exchanger according to the current compressor power change is simple, the first outdoor heat exchanger is defrosted under the condition that indoor environment heating is not influenced, the influence on the comfort level of a user due to indoor environment temperature fluctuation caused by defrosting of the first outdoor heat exchanger is avoided, and the user experience is further improved.
On the basis of the above embodiment, in the case that the current operating power is less than the initial operating power, controlling the air conditioner to perform a defrosting operation on the first outdoor heat exchanger, and controlling the second outdoor heat exchanger to start includes: determining a difference value of adjacent current operating powers; and in the continuous time, under the condition that the difference value is in an increasing trend, controlling the air conditioner to execute defrosting operation on the first outdoor heat exchanger and controlling the second outdoor heat exchanger to start.
Starting a heating mode of the air conditioner, detecting the current running power of the compressor in real time by the monitoring device, and specifically, acquiring the initial running power of the compressor as P0，60After min, acquiring the current running power of the compressor as P1And detecting the current running power of the compressor to be P after 70min2Detecting the current running power of the compressor to be P after 80min3(ii) a Determining P1And P2Difference Δ P therebetween1And P2And P3Difference Δ P therebetween2At Δ P1Less than Δ P2Under the condition of (3), the speed of the reduction of the running power of the compressor is gradually increased, the current running power of the compressor is influenced by the frosting of the current first outdoor heat exchanger, the air conditioner is controlled to execute defrosting operation on the first outdoor heat exchanger, and meanwhile, the second outdoor heat exchanger is controlled to start to continuously supply heat for the indoor environment.
At Δ P1Is greater than or equal to delta P2In this case, the rate of power reduction of the compressor is gentle, the current operating power of the compressor is less affected by frost formation on the first outdoor heat exchanger, and the air conditioner is controlled to operate in an initial state (an operating mode when the air conditioner is started).
The embodiment controls the defrosting operation of the air conditioner according to the reduction rate of the current running power of the compressor; in other words, in the continuous time, under the condition that the difference value of the adjacent current operating powers is in an increasing trend, the air conditioner is controlled to execute defrosting operation on the first outdoor heat exchanger, the second outdoor heat exchanger of the air conditioner is controlled to start, and heat is continuously supplied to the indoor environment; when the current running power is reduced slowly, the influence on the user experience is small, and the air conditioner is controlled to run in an initial state. The control method is simple and efficient, the defrosting operation of the air conditioner is controlled directly through the running power of the compressor, the defrosting times are reduced, and the influence on the comfort level of a user due to fluctuation of the indoor environment caused by defrosting of the first outdoor heat exchanger can be avoided.
In this embodiment, the time between two adjacent power detections is not specifically limited, and may be set according to actual requirements.
On the basis of the above embodiment, in the case that the difference value is in an increasing trend during the continuous time, controlling the air conditioner to perform the defrosting operation on the first outdoor heat exchanger, and controlling the second outdoor heat exchanger to start further includes: and under the condition that the difference value is in an increasing trend and is greater than or equal to the preset power, controlling the air conditioner to defrost the first outdoor heat exchanger and controlling the second outdoor heat exchanger to start.
In a preferred embodiment, a heating mode of the air conditioner is started, and an initial operation power of the compressor is P0Setting the preset power to be 250W, and detecting the current running power of the compressor to be P respectively in continuous time4、P5And P6Determining P4And P5Difference Δ P therebetween4And P5And P6Difference Δ P therebetween5At Δ P4Less than Δ P5And Δ P4And Δ P5Under the condition that the running power of the compressor is larger than or equal to the preset power of 250W, the speed of reducing the running power of the compressor is high, the difference value of the adjacent current running power is larger than or equal to 250W, the current running power of the compressor is seriously influenced by the frosting of the first outdoor heat exchanger, the air conditioner is controlled to execute defrosting operation on the first outdoor heat exchanger, and meanwhile, the second outdoor heat exchanger is controlled to start to continuously supply heat to the indoor environment.
At Δ P4Less than Δ P5And Δ P4And Δ P5And controlling the air conditioner to operate in an initial state under the condition that at least one power is less than the preset power 250W.
In the embodiment, under the condition that the difference value of adjacent current operating powers is in an increasing trend and the difference value is greater than or equal to the preset power in continuous time, the air conditioner is controlled to defrost the first outdoor heat exchanger, the second outdoor heat exchanger is controlled to start, and heat is continuously supplied to the indoor environment; the control method can more accurately control the defrosting operation of the air conditioner on the first outdoor heat exchanger, and can reduce the defrosting frequency.
The preset power is not specifically limited in the embodiment, and the preset power can be limited according to actual conditions, so that the user requirements can be met.
On the basis of the above embodiment, controlling the air conditioner to perform the defrosting operation on the first outdoor heat exchanger includes: and controlling the heating device to heat the first outdoor heat exchanger.
Specifically, the first outdoor heat exchanger and the second outdoor heat exchanger are respectively connected with the heating device, a heating mode of the air conditioner is started, the air conditioner is controlled to disconnect the indoor heat exchanger from the first outdoor heat exchanger under the condition that the current running power of the compressor is smaller than the initial running power of the compressor, the heating device is controlled to heat the first outdoor heat exchanger, and frost on the first outdoor heat exchanger is melted after absorbing heat; meanwhile, the indoor heat exchanger is controlled to be connected with the second outdoor heat exchanger, and heat is continuously supplied to the indoor environment.
Further, after the second outdoor heat exchanger is started for a period of time and the running power of the compressor is stable, the power monitoring device is started to continue monitoring the current running power of the compressor, and under the condition that the current running power of the compressor is smaller than the initial running power, the air conditioner is controlled to disconnect the indoor heat exchanger from the second outdoor heat exchanger, the heating device is controlled to heat the second outdoor heat exchanger, and frost on the second outdoor heat exchanger is melted after absorbing heat; and meanwhile, controlling the indoor heat exchanger to be connected with the first outdoor heat exchanger, controlling the first outdoor heat exchanger to continuously supply heat to the indoor environment, starting the detection device to continuously monitor the current operation power of the compressor after the current operation power of the compressor is stable, and circulating the steps.
In the embodiment, the heating device generates heat, so that the frost on the first outdoor heat exchanger or the second outdoor heat exchanger absorbs the heat and melts, and the purpose of defrosting is further achieved; the control method is simple and can effectively defrost.
In this embodiment, the heating device is not particularly limited, and may be a solar heating structure or an electric heating structure, and may be configured to heat and defrost the first outdoor heat exchanger or the second outdoor heat exchanger.
On the basis of the above embodiment, controlling the heating device to heat the first outdoor heat exchanger specifically includes: acquiring the current coil temperature of the first outdoor heat exchanger; under the condition that the temperature of the coil pipe is lower than a first preset temperature, controlling a heating device to heat a first outdoor heat exchanger at a first preset power; when the temperature of the coil pipe is greater than or equal to a first preset temperature and less than a second preset temperature, controlling the heating device to heat the first outdoor heat exchanger at a second preset power; when the temperature of the coil pipe is greater than or equal to a second preset temperature and less than the frost point temperature, controlling the heating device to heat the first outdoor heat exchanger at a third preset power; the first preset power is larger than the second preset power, and the second preset power is larger than the third preset power.
In one embodiment, the first preset temperature is set to-20 ℃, the second preset temperature is set to-15 ℃, and the frost point temperature is set to 0 ℃; the first preset power is 2000W, the second preset power is 1500W, and the third preset power is 1000W; detecting the coil temperature of the first outdoor heat exchanger through a temperature monitoring device to obtain the coil temperature of the first outdoor heat exchanger; under the condition that the temperature of the coil pipe is-25 ℃, the temperature of the coil pipe is lower than a first preset temperature of-20 ℃, and the heating device is controlled to heat and defrost the first outdoor heat exchanger at the power of 2000W of the first preset power; under the condition that the temperature of the coil pipe is-18 ℃, the temperature of the coil pipe is higher than a first preset temperature by-20 ℃ and lower than a second preset temperature by-15 ℃, and the heating device is controlled to heat and defrost the first outdoor heat exchanger at the power of 1500W of the second preset power; and under the condition that the temperature of the coil pipe is detected to be-5 ℃, the temperature of the coil pipe is higher than-15 ℃ and lower than the frost point temperature by 0 ℃, and the heating device is controlled to heat and defrost the first outdoor heat exchanger at the power of 1000W of the third preset power.
In the embodiment, the coil temperature of the first outdoor heat exchanger is monitored, and the heating device is controlled to heat and defrost the first outdoor heat exchanger according to the coil temperature; according to the control method, the frosting condition of the first outdoor heat exchanger is monitored according to the temperature of the coil pipe, the heating device is controlled to heat the first outdoor heat exchanger at different powers, the defrosting speed can be increased, the defrosting time can be saved, resources can be reasonably utilized, and waste is avoided.
In this embodiment, the first preset temperature, the second preset temperature, the frost point temperature, the first preset power, the second preset power, and the third preset power are not specifically limited, and may be limited according to an actual situation, so that the first preset power is greater than the second preset power, and the second preset power is greater than the third preset power, which meets a user requirement.
On the basis of the foregoing embodiment, the air conditioner defrosting control method provided in this embodiment further includes: controlling the defrosting operation of the air conditioner to be closed under the conditions that the defrosting time is less than or equal to a first preset time and the temperature of the coil is greater than or equal to a third preset temperature; or when the defrosting time is more than or equal to a second preset time, controlling the defrosting operation of the air conditioner to be closed, wherein the second preset time is more than the first preset time.
In one embodiment, the air conditioner is controlled to perform defrosting operation on the first outdoor heat exchanger, under the condition that the defrosting time is 50S and the temperature of the coil is 10 ℃, the defrosting time is less than a first preset time length of 60S, the temperature of the coil is greater than a third preset temperature of 5 ℃, and the defrosting operation of the air conditioner is controlled to be closed when the current frost of the first outdoor heat exchanger is removed or residual frost can be removed by using the waste heat of the coil; according to the relationship between the defrosting time and the first preset time and the relationship between the current coil temperature and the third preset temperature, the defrosting operation of the air conditioner is controlled to be closed in time, and the resource waste caused by long-time starting is avoided.
In another embodiment, under the condition that the defrosting time is 20min, the defrosting time is 15min longer than the second preset time, frost on the first outdoor heat exchanger can be completely removed within 20min, and the defrosting operation of the air conditioner is controlled to be closed; the defrosting control method of the air conditioner can remove frost on the first outdoor heat exchanger more thoroughly.
The second preset time in this embodiment is not specifically limited, and the frost on the first outdoor heat exchanger may be completely removed.
On the basis of the above embodiment, in the case that the defrosting time is less than or equal to the first preset time period and the coil temperature is greater than or equal to the third preset temperature, controlling the defrosting operation of the air conditioner to be turned off further includes: and under the conditions that the defrosting time is less than or equal to a third preset time and the temperature of the coil is greater than or equal to a fourth preset temperature, controlling the defrosting operation of the air conditioner to be closed, wherein the third preset time is less than the first preset time, and the fourth preset temperature is greater than the third preset temperature.
Under the condition that the first outdoor heat exchanger is frosted for more time, the defrosting time is less than or equal to a first preset time length of 60S, and the temperature of the coil pipe is greater than a third preset temperature of 5 ℃, the defrosting operation of the air conditioner is controlled to be closed, the frost on the first outdoor heat exchanger cannot be completely removed, and at the moment, the frost on the first outdoor heat exchanger has residues and needs to be continuously subjected to the defrosting operation; specifically, when the defrosting time is 20S and the temperature of the coil is 18 ℃, the defrosting time is less than or equal to a first preset time length of 60S, the temperature of the coil is greater than or equal to a fourth preset temperature of 15 ℃, and the defrosting operation of the air conditioner is controlled to be closed; the method can effectively control the air conditioner to clear the frost on the first outdoor heat exchanger, and avoids the situation that the continuous use of the first outdoor heat exchanger is not completely influenced by the incomplete clearing.
In the embodiment, the relationship between the temperature of the coil pipe and the third preset temperature and the fourth preset temperature is detected in different defrosting time, so that the defrosting operation of the air conditioner is controlled to be closed, and the condition that the defrosting is incomplete due to excessive frosting can be avoided.
In this embodiment, the third preset time and the fourth preset temperature are not specifically limited, and may be limited according to a user requirement, so that the third preset time is shorter than the first preset time, and the fourth preset temperature is higher than the third preset temperature.
The following describes the air conditioning control device provided by the present invention, and the air conditioning control device described below and the air conditioning defrosting control method described above can be referred to correspondingly.
The present embodiment also provides an air conditioning control apparatus, which includes: an acquisition module: the first outdoor heat exchanger is used for obtaining the initial running power and the current running power of the compressor under the condition that the first outdoor heat exchanger runs in the heating mode of the air conditioner; a control module: and the control unit is used for controlling the air conditioner to execute defrosting operation on the first outdoor heat exchanger and controlling the second outdoor heat exchanger to start under the condition that the current operating power is less than the initial operating power.
The embodiment also provides an air conditioner, which comprises the air conditioner control device and an air conditioner defrosting system, as shown in fig. 2, the air conditioner control device specifically comprises an indoor heat exchanger 1, a compressor 4, a first outdoor heat exchanger 2, a second outdoor heat exchanger 3 and a heating device 5, wherein the indoor heat exchanger 1, the compressor 4 and the first outdoor heat exchanger 2 form a circulating flow path, the first outdoor heat exchanger 2 and the second outdoor heat exchanger 3 are respectively connected with the heating device 5, when the first outdoor heat exchanger 2 frosts and needs defrosting, the indoor heat exchanger 1 is controlled to be disconnected from the first outdoor heat exchanger 2, so that the indoor heat exchanger 1 is connected with the second outdoor heat exchanger 3, and the heating device 5 heats and defrosts the first outdoor heat exchanger 2; under the condition that the second outdoor heat exchanger 3 frosts, the indoor heat exchanger 1 is connected with the first outdoor heat exchanger 2, and the heating device 5 heats and defrosts the second outdoor heat exchanger 3.
Further, the air conditioner provided by this embodiment further includes a temperature monitoring device and a power monitoring device, wherein the temperature monitoring device is used for detecting the temperature of the coil on the first outdoor heat exchanger 2 and the temperature of the coil on the second outdoor heat exchanger 3, and according to the coil temperature, the heating device is controlled to heat and defrost the first outdoor heat exchanger 2 or the second outdoor heat exchanger 3 with different heating powers. The power monitoring device is used for detecting the current running power of the compressor 4, controlling the air conditioner to execute a defrosting mode on the first outdoor heat exchanger and controlling the second outdoor heat exchanger to start to continuously supply heat to the indoor environment under the condition that the current running power of the compressor 4 is smaller than the initial running power of the compressor 4.
Fig. 3 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 3: a processor (processor)310, a communication Interface (communication Interface)320, a memory (memory)330 and a communication bus 340, wherein the processor 310, the communication Interface 320 and the memory 330 communicate with each other via the communication bus 340. The processor 310 may call logic instructions in the memory 330 to perform an air conditioner defrost control method comprising: in the heating mode of the air conditioner, under the condition that the first outdoor heat exchanger operates, acquiring the initial operating power and the current operating power of the compressor; and under the condition that the current running power is smaller than the initial running power, controlling the air conditioner to execute defrosting operation on the first outdoor heat exchanger and controlling the second outdoor heat exchanger to start.
In addition, the logic instructions in the memory 330 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing 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 according to the embodiments of the present invention. And the aforementioned storage medium includes: 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.
In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, which when executed by a computer, enable the computer to perform the air conditioner defrost control method provided by the above methods, the method comprising: in the heating mode of the air conditioner, under the condition that the first outdoor heat exchanger operates, acquiring the initial operating power and the current operating power of the compressor; and under the condition that the current running power is smaller than the initial running power, controlling the air conditioner to execute defrosting operation on the first outdoor heat exchanger and controlling the second outdoor heat exchanger to start.
In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program, which when executed by a processor, is implemented to perform the air conditioner defrost control methods provided above, the method including: in the heating mode of the air conditioner, under the condition that the first outdoor heat exchanger operates, acquiring the initial operating power and the current operating power of the compressor; and under the condition that the current running power is smaller than the initial running power, controlling the air conditioner to execute defrosting operation on the first outdoor heat exchanger and controlling the second outdoor heat exchanger to start.
The above-described embodiments of the apparatus are merely illustrative, and 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 modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.
Claims (10)
1. An air conditioner defrosting control method is characterized by comprising the following steps:
starting a heating mode of the air conditioner, and acquiring initial operation power and current operation power of the compressor under the condition that the first outdoor heat exchanger operates;
and under the condition that the current operating power is smaller than the initial operating power, controlling the air conditioner to execute defrosting operation on the first outdoor heat exchanger, and controlling the second outdoor heat exchanger to start.
2. The air conditioner defrosting control method according to claim 1, wherein in the case that the current operating power is less than the initial operating power, controlling the air conditioner to perform a defrosting operation on a first outdoor heat exchanger, and controlling a second outdoor heat exchanger to be activated comprises:
determining a difference between adjacent current operating powers;
and in the continuous time, under the condition that the difference value is in an increasing trend, controlling the air conditioner to defrost the first outdoor heat exchanger and controlling the second outdoor heat exchanger to start.
3. The air conditioner defrosting control method according to claim 2, wherein controlling the air conditioner to perform a defrosting operation on the first outdoor heat exchanger in a case where the difference value is in an increasing trend over a continuous time, and controlling the second outdoor heat exchanger to be activated further comprises:
and controlling the air conditioner to execute defrosting operation on the first outdoor heat exchanger and control the second outdoor heat exchanger to start under the condition that the difference value is in an increasing trend and is greater than or equal to the preset power.
4. The air conditioner defrosting control method according to any one of claims 1 to 3, wherein controlling the air conditioner to perform a defrosting operation on the first outdoor heat exchanger includes: and controlling the heating device to heat the first outdoor heat exchanger.
5. The air conditioner defrosting control method according to claim 4, wherein controlling the heating device to heat the first outdoor heat exchanger specifically comprises:
acquiring the current coil temperature of the first outdoor heat exchanger;
under the condition that the temperature of the coil pipe is lower than a first preset temperature, controlling a heating device to heat a first outdoor heat exchanger at a first preset power;
when the temperature of the coil pipe is greater than or equal to the first preset temperature and less than a second preset temperature, controlling a heating device to heat a first outdoor heat exchanger at a second preset power;
when the temperature of the coil pipe is greater than or equal to the second preset temperature and less than the frost point temperature, controlling a heating device to heat a first outdoor heat exchanger at a third preset power;
the first preset power is larger than the second preset power, and the second preset power is larger than the third preset power.
6. The air conditioner defrost control method of claim 5, further comprising:
controlling the defrosting operation of the air conditioner to be closed under the condition that the defrosting time is less than or equal to a first preset time and the temperature of the coil is greater than or equal to a third preset temperature;
or when the defrosting time is more than or equal to a second preset time, controlling the defrosting operation of the air conditioner to be closed, wherein the second preset time is more than the first preset time.
7. The air conditioner defrosting control method of claim 6, wherein in the case that the defrosting time is less than or equal to a first preset time period and the coil temperature is greater than or equal to a third preset temperature, controlling the defrosting operation of the air conditioner to be turned off further comprises:
and controlling the defrosting operation of the air conditioner to be closed under the conditions that the defrosting time is less than or equal to a third preset time and the temperature of the coil pipe is greater than or equal to a fourth preset temperature, wherein the third preset time is less than the first preset time, and the fourth preset temperature is greater than the third preset temperature.
8. An air conditioning control device, characterized by comprising:
an acquisition module: the first outdoor heat exchanger is used for obtaining the initial running power and the current running power of the compressor under the condition that the first outdoor heat exchanger runs in the heating mode of the air conditioner;
a control module: and the control unit is used for controlling the air conditioner to execute defrosting operation on the first outdoor heat exchanger and controlling the second outdoor heat exchanger to start under the condition that the current operating power is less than the initial operating power.
9. An air conditioner characterized by comprising the air conditioning control device of claim 8.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program implements the steps of the air conditioner defrost control method according to any of claims 1-7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111265917.0A CN114061031A (en) | 2021-10-28 | 2021-10-28 | Air conditioner defrosting control method and device and air conditioner |
| PCT/CN2022/093296 WO2023071153A1 (en) | 2021-10-28 | 2022-05-17 | Defrosting control method for air conditioner, and air conditioner control apparatus and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111265917.0A CN114061031A (en) | 2021-10-28 | 2021-10-28 | Air conditioner defrosting control method and device and air conditioner |
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| CN114061031A true CN114061031A (en) | 2022-02-18 |
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| WO (1) | WO2023071153A1 (en) |
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| WO2023071153A1 (en) | 2023-05-04 |
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