CN114061030A - 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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- CN114061030A CN114061030A CN202111265911.3A CN202111265911A CN114061030A CN 114061030 A CN114061030 A CN 114061030A CN 202111265911 A CN202111265911 A CN 202111265911A CN 114061030 A CN114061030 A CN 114061030A
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- 238000010257 thawing Methods 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000010438 heat treatment Methods 0.000 claims abstract description 69
- 238000004378 air conditioning Methods 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 5
- 238000004590 computer program Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000155 melt Substances 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
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008859 change 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
- 238000002844 melting Methods 0.000 description 1
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- 239000002918 waste heat 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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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: acquiring the frosting thickness of the current first outdoor heat exchanger; and under the condition that the frosting thickness is larger than or equal to a first preset thickness, controlling the air conditioner to defrost the first outdoor heat exchanger, and controlling the second outdoor heat exchanger to start. According to the frosting thickness of the current first outdoor heat exchanger, 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 defrosting control method for the air conditioner is simple, the first outdoor heat exchanger is defrosted under the condition that heating of an indoor environment is not influenced, the situation that the comfort level of a user is influenced due to the fact that the temperature of the indoor environment fluctuates because the first outdoor heat exchanger is defrosted is avoided, and therefore user experience 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, an air conditioner defrosting control device and an air conditioner, and aims to solve the problems that in the prior art, heat cannot be sent out indoors during defrosting, 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: acquiring the frosting thickness of the current first outdoor heat exchanger; and under the condition that the frosting thickness is larger than or equal to a first preset thickness, controlling the air conditioner to defrost the first outdoor heat exchanger, and controlling the second outdoor heat exchanger to start.
The defrosting control method for the air conditioner further comprises the following steps: and controlling the air conditioner to operate in an initial state under the condition that the frosting thickness is smaller than the first preset thickness.
According to the defrosting control method for the air conditioner provided by the invention, under the condition that the frosting thickness is greater than or equal to the first preset thickness, 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: acquiring the frosting thicknesses of a plurality of preset positions on the current first outdoor heat exchanger; determining an average value of the frosting thicknesses based on the number of the preset positions and the frosting thicknesses of the plurality of the preset positions; and under the condition that the average value is greater than or equal to a first preset thickness, 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, 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 for the air conditioner, the step of controlling the heating device to heat the first outdoor heat exchanger comprises the following steps: when the frosting thickness is larger than or equal to the first preset thickness and smaller than the second preset thickness, controlling a heating device to heat a first outdoor heat exchanger at a first preset power; under the condition that the frosting thickness is larger than or equal to the second preset thickness, controlling a heating device to heat a first outdoor heat exchanger at a second preset power; wherein the first preset power is less than the second preset power.
According to the defrosting control method for the air conditioner provided by the invention, the step of controlling the heating device to heat the first outdoor heat exchanger further 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 third preset power; when the temperature of the coil pipe is greater than or equal to the first preset temperature and less than the second preset temperature, controlling a heating device to heat a first outdoor heat exchanger at a fourth 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 fifth preset power; the third preset power is greater than the fourth preset power, and the fourth preset power is greater than the fifth preset power.
The defrosting control method for the air conditioner 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; or controlling the defrosting operation to be closed under the condition that the frosting thickness is smaller than or equal to a third preset thickness, wherein the third preset thickness is smaller than the first preset thickness.
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 under the condition that the defrosting time is less than or equal to a third preset time and the temperature of the coil pipe is greater than 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.
The present invention also provides an air conditioner control device, including: an acquisition module: the frosting thickness of the current first outdoor heat exchanger is obtained; 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 frosting thickness is greater than or equal to a first preset thickness.
The invention also provides an air conditioner which comprises the air conditioner control device.
According to the air conditioner defrosting control method, the control device and the air conditioner, the current frosting condition of the first indoor heat exchanger is known by acquiring the current frosting thickness of the first outdoor heat exchanger; under the condition that the frosting thickness is larger than or equal to a first preset thickness, controlling the air conditioner to defrost the first outdoor heat exchanger, controlling the second outdoor heat exchanger to start, and continuously supplying heat to the indoor environment through the second outdoor heat exchanger; 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 frosting thickness is simple, the first outdoor heat exchanger is defrosted under the condition that heating of an indoor environment is not influenced, the situation that the comfort degree of a user is influenced due to temperature fluctuation of the indoor environment caused by defrosting of the first outdoor heat exchanger is avoided, and therefore user experience is 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: acquiring the frosting thickness of the current first outdoor heat exchanger; step 200: and under the condition that the frosting thickness is larger than or equal to the first preset thickness, controlling the air conditioner to defrost 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 current frosting thickness of a first outdoor heat exchanger is obtained; specifically, this embodiment detects the frosting thickness of current first outdoor heat exchanger through thickness monitoring device, and then obtains the frosting thickness of current first outdoor heat exchanger.
Further, step 200: under the condition that the frosting thickness is larger than or equal to a first preset thickness, controlling the air conditioner to defrost the first outdoor heat exchanger, and controlling the second outdoor heat exchanger to start; specifically, the frosting thickness of the current first outdoor heat exchanger is compared with the first preset thickness, under the condition that the frosting thickness of the current first outdoor heat exchanger is larger than or equal to the first preset thickness, the frosting thickness on the first outdoor heat exchanger influences the heating effect of the first outdoor heat exchanger on the indoor environment, the air conditioner is controlled to disconnect the indoor heat exchanger from the first outdoor heat exchanger, the defrosting operation is executed on the first outdoor heat exchanger, meanwhile, the indoor heat exchanger is controlled to be connected with the second outdoor heat exchanger, and the second outdoor heat exchanger is controlled to continue to supply heat for the indoor environment.
In a specific embodiment, the first preset thickness is set to be 1.5mm, when the frosting thickness of the first outdoor heat exchanger is 2mm and is 1.5mm larger than the first preset thickness, the air conditioner is controlled to defrost the first outdoor heat exchanger, the second outdoor heat exchanger is controlled to start, and heat supply to the indoor environment is continued; according to the control method, when the first outdoor heat exchanger is defrosted, the second outdoor heat exchanger is not influenced to continuously supply heat to the indoor environment, and 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.
According to the air conditioner defrosting control method provided by the embodiment, the current frosting condition of the first indoor heat exchanger is known by acquiring the current frosting thickness of the first outdoor heat exchanger; under the condition that the frosting thickness is larger than or equal to a first preset thickness, controlling the air conditioner to defrost the first outdoor heat exchanger, controlling the second outdoor heat exchanger to start, and continuously supplying heat to the indoor environment through the second outdoor heat exchanger; 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 frosting thickness is simple, the first outdoor heat exchanger is defrosted under the condition that heating of an indoor environment is not influenced, the situation that the comfort degree of a user is influenced due to temperature fluctuation of the indoor environment caused by defrosting of the first outdoor heat exchanger is avoided, and therefore user experience is improved.
In this embodiment, the first preset thickness is not limited to 1.5mm, and may also be 3mm, and the like, and may be defined according to the use condition of the user, so as to meet the user requirement.
On the basis of the above embodiment, the air conditioner defrosting control method provided by this embodiment further includes: controlling the air conditioner to operate in an initial state under the condition that the frosting thickness is smaller than a first preset thickness; the method comprises the steps of obtaining the current frosting thickness of a first outdoor heat exchanger, and controlling the air conditioner to continuously run in an initial state (an operation mode when the air conditioner is started) under the condition that the frosting thickness of the first outdoor heat exchanger is smaller than a first preset thickness.
In a specific embodiment, the thickness monitoring device detects the frosting thickness of the first outdoor heat exchanger, the frosting thickness of the first outdoor heat exchanger is 0.5mm, and the frosting thickness of the first outdoor heat exchanger is smaller than the first preset thickness of 1.5mm, namely, the frosting of the first outdoor heat exchanger has little influence on the heating effect of the first outdoor heat exchanger, or the temperature fluctuation of the indoor environment does not influence the comfort level of a user, so that the defrosting is not needed, and the air conditioner is controlled to continue to operate in the current operation mode.
In the embodiment, the operation of the air conditioner is controlled according to the frosting thickness of the current first outdoor heat exchanger by setting the first preset temperature, namely, under the condition that the frosting thickness is greater than or equal to the first preset thickness, the air conditioner is controlled to execute defrosting operation on the first outdoor heat exchanger, the second outdoor heat exchanger is controlled to start, heat is continuously supplied to the indoor environment, and the influence on the comfort level of a user due to fluctuation of the indoor environment temperature caused by defrosting of the first outdoor heat exchanger is avoided; and under the condition that the frosting thickness is smaller than the first preset thickness, the frosting thickness has little influence on the heating effect of the first outdoor heat exchanger or does not influence the comfort level of a user, and the air conditioner is controlled to continue to operate in the current operation mode.
On the basis of the above embodiment, in a case where the frosting thickness is greater than or equal to a first preset thickness, controlling the air conditioner to perform a defrosting operation on the first outdoor heat exchanger, and controlling the second outdoor heat exchanger to start further includes: acquiring the frosting thicknesses of a plurality of preset positions on the current first outdoor heat exchanger; determining an average value of the frosting thicknesses based on the number of the preset positions and the frosting thicknesses of the plurality of preset positions; and under the condition that the average value is larger than or equal to the first preset thickness, controlling the air conditioner to defrost the first outdoor heat exchanger and controlling the second outdoor heat exchanger to start.
In a preferred embodiment, thickness monitoring devices are arranged at four corners and the middle part of the first outdoor heat exchanger, namely 5 thickness monitoring devices are arranged in total, wherein the thickness monitoring devices can be infrared detectors and are used for detecting the frosting thickness of a preset position on the first outdoor heat exchanger; acquiring frosting thicknesses of five preset positions on the current first outdoor heat exchanger, wherein the frosting thicknesses are respectively 1.5mm, 1.7mm, 2.0mm, 1.2mm and 0.9 mm; the average of the frost thickness at these five locations was further calculated as: 9.3mm for 1.5mm +1.7mm +2.0mm +1.2mm +2.9 mm; 9.3 mm/5-1.86 mm, i.e. the average frost thickness of the current first outdoor heat exchanger is 1.86 mm; at the moment, the average value of the frosting thickness of the first outdoor heat exchanger is larger than the first preset thickness by 1.5mm, the frosting thickness influences the heating effect of the first outdoor heat exchanger, and 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 be started, heat is continuously supplied to the indoor environment, and the situation that the temperature of the indoor environment is fluctuated and the comfort level of a user is influenced due to defrosting of the first outdoor heat exchanger is avoided.
And controlling the air conditioner to operate in an initial state under the condition that the average value is less than the first preset thickness. Specifically, the average frosting thickness of the first outdoor heat exchanger is 1.2mm and less than 1.5mm, so that the heating effect of the first outdoor heat exchanger is not influenced, or the influence of the average frosting thickness on a user is small, and the air conditioner is controlled to operate in an initial state.
In the embodiment, the average value of the frosting thicknesses of the first outdoor heat exchanger is determined by acquiring the frosting thicknesses of different preset positions of the first outdoor heat exchanger; controlling the operation of the air conditioner based on the relation between the average value of the frosting thickness of the first outdoor heat exchanger and a first preset thickness; under the condition that the average value is larger than or equal to the first preset thickness, controlling the air conditioner to defrost the first outdoor heat exchanger, controlling the second outdoor heat exchanger to start, and continuously supplying heat to the indoor environment; controlling the air conditioner to operate in an initial state under the condition that the average value is smaller than a first preset thickness; the control method is simple, the frosting condition on the first outdoor heat exchanger can be known more accurately, the air conditioner is controlled to defrost the first outdoor heat exchanger, the heating effect is prevented from being influenced by frosting, meanwhile, the second outdoor heat exchanger is controlled to be started, heat is continuously supplied to the indoor environment, and the influence on the comfort level of a user due to temperature fluctuation of the indoor environment caused by defrosting is avoided.
In this embodiment, the preset position is not specifically limited, and the frosting thickness of the preset position may be obtained at any position of the first heat exchanger.
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, under the condition that the frosting thickness of the first outdoor heat exchanger is larger than or equal to a first preset thickness, the air conditioner is controlled to disconnect the indoor heat exchanger from the first outdoor heat exchanger, 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, under the condition that the frosting thickness of the second outdoor heat exchanger is larger than or equal to the first preset thickness, 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 the frost on the second outdoor heat exchanger absorbs heat and then melts; meanwhile, the indoor heat exchanger is controlled to be connected with the first outdoor heat exchanger, and the first outdoor heat exchanger is controlled to continuously supply heat to the indoor environment.
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, further, the controlling the heating device to heat the first outdoor heat exchanger includes: when the frosting thickness is larger than or equal to a first preset thickness and smaller than a second preset thickness, controlling a heating device to heat a first outdoor heat exchanger at a first preset power; controlling the heating device to heat the first outdoor heat exchanger at a second preset power under the condition that the frosting thickness is larger than or equal to a second preset thickness; wherein the first predetermined power is less than the second predetermined power.
In one embodiment, the first preset thickness is set to be 1.5mm, and the second preset thickness is set to be 4 mm; the first preset power is 800W, and the second preset power is 2500W; controlling the air conditioner to operate in an initial state under the condition that the frosting thickness of the first outdoor heat exchanger is detected to be 1.2 mm; under the condition that the frosting thickness of the first outdoor heat exchanger is detected to be 2.0mm, controlling a heating device to heat the first outdoor heat exchanger at the power of 800W, and enabling frost on the first outdoor heat exchanger to absorb heat and melt; and meanwhile, the second outdoor heat exchanger is controlled to be started to continuously supply heat to the indoor environment. Under the condition that the frosting thickness of the first outdoor heat exchanger is detected to be 6mm, the frosting thickness of the first outdoor heat exchanger is thicker at the moment, the heating device is controlled to heat the first outdoor heat exchanger at the power of 2500W, and the heat absorption and melting of frost on the first outdoor heat exchanger can be accelerated.
Further, after the heating device is controlled to heat the first outdoor heat exchanger with 2500W of power for a period of time, under the condition that the frosting thickness on the first outdoor heat exchanger is 3.9mm, the power of the heating device can be controlled to be reduced, namely the heating device is controlled to continue to heat the first outdoor heat exchanger with 800W of power; the method for controlling the power of the heating device to heat the first outdoor heat exchanger is simple, reasonably utilizes resources and avoids resource waste.
According to the frosting thickness of the first outdoor heat exchanger, the heating device is controlled to heat and defrost the first outdoor heat exchanger at different heating powers; under the condition that the frosting thickness is larger than the second preset thickness, the heating device is controlled to heat the first outdoor heat exchanger at the second preset power, so that the defrosting time of the first outdoor heat exchanger can be shortened; under the condition that the frosting thickness of the first outdoor heat exchanger is smaller than the second preset thickness, the power of the heating device is controlled to be reduced, the influence on the first outdoor heat exchanger caused by overlarge heating power is avoided, and meanwhile, resources can be saved.
In this embodiment, the second preset thickness, the first preset power and the second preset power are not specifically limited, and may be limited according to an actual situation, so that the second preset power is greater than the first preset power, and the user requirement is met.
On the basis of the above embodiment, further, controlling the heating device to heat the first outdoor heat exchanger further 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 the first preset temperature, controlling a heating device to heat the first outdoor heat exchanger at a third 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 a heating device to heat a first outdoor heat exchanger at a fourth 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 fifth preset power; the third preset power is greater than the fourth preset power, and the fourth preset power is greater than the fifth 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 third preset power is 2000W, the fourth preset power is 1500W, and the fifth 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; 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 1500W; 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.
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, resources are reasonably utilized, and waste is avoided.
In this embodiment, the first preset temperature, the second preset temperature, the frost point temperature, the third preset power, the fourth preset power, and the fifth preset power are not specifically limited, and may be limited according to an actual situation, so that the third preset power is greater than the fourth preset power, and the fourth preset power is greater than the fifth preset power, so as to meet 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; or controlling the defrosting operation to be closed under the condition that the frosting thickness is smaller than or equal to a third preset thickness, wherein the third preset thickness is smaller than the first preset thickness.
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.
In another embodiment, when the frosting thickness of the first outdoor heat exchanger is detected to be 0.5mm, the frosting thickness is smaller than 1mm and smaller than the first preset thickness of 1.5mm, the frosting thickness of the first outdoor heat exchanger is basically eliminated, the current frosting thickness does not influence continuous use, the defrosting operation is controlled to be closed, and resource waste is avoided.
The third preset thickness in this embodiment is not specifically limited, and the third preset thickness is smaller than the first preset thickness, so as to meet the defrosting requirement of the user.
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 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 frosting thickness of the current first outdoor heat exchanger is obtained; 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 frosting thickness is greater than or equal to a first preset thickness.
Referring to fig. 2, the embodiment further provides an air conditioner, which includes the air conditioner control device, and further includes 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, where the indoor heat exchanger 1, the compressor 4, and the first outdoor heat exchanger 2 form a circulation flow path, the first outdoor heat exchanger 2 and the second outdoor heat exchanger 3 are respectively connected to the heating device 5, and 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 to 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 thickness 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 or the second outdoor heat exchanger with different heating powers. The thickness monitoring device is used for detecting the frosting thickness of the first outdoor heat exchanger 2 or the second outdoor heat exchanger 3, controlling the air conditioner to execute defrosting operation on the first outdoor heat exchanger 2 or the second outdoor heat exchanger 3 under the condition that the frosting thickness is larger than or equal to a first preset thickness, controlling the second outdoor heat exchanger 3 or the first outdoor heat exchanger 2 to be started, and continuously supplying heat to the indoor environment.
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: acquiring the frosting thickness of the current first outdoor heat exchanger; and under the condition that the frosting thickness is larger than or equal to the first preset thickness, controlling the air conditioner to defrost 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: acquiring the frosting thickness of the current first outdoor heat exchanger; and under the condition that the frosting thickness is larger than or equal to the first preset thickness, controlling the air conditioner to defrost 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: acquiring the frosting thickness of the current first outdoor heat exchanger; and under the condition that the frosting thickness is larger than or equal to the first preset thickness, controlling the air conditioner to defrost 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:
acquiring the frosting thickness of the current first outdoor heat exchanger;
and under the condition that the frosting thickness is larger than or equal to a first preset thickness, controlling the air conditioner to defrost the first outdoor heat exchanger, and controlling the second outdoor heat exchanger to start.
2. The air conditioner defrost control method of claim 1, further comprising: and controlling the air conditioner to operate in an initial state under the condition that the frosting thickness is smaller than the first preset thickness.
3. The air conditioner defrosting control method according to claim 1, wherein in a case where the frosting thickness is greater than or equal to a first preset thickness, controlling the air conditioner to perform a defrosting operation on the first outdoor heat exchanger, and controlling the second outdoor heat exchanger to be activated further comprises:
acquiring the frosting thicknesses of a plurality of preset positions on the current first outdoor heat exchanger;
determining an average value of the frosting thicknesses based on the number of the preset positions and the frosting thicknesses of the plurality of the preset positions;
and under the condition that the average value is greater than or equal to a first preset thickness, controlling the air conditioner to defrost the first outdoor heat exchanger and controlling the second outdoor heat exchanger to start.
4. The air conditioner defrosting control method according to claim 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 defrost control method of claim 4, wherein controlling the heating device to heat the first outdoor heat exchanger comprises:
when the frosting thickness is larger than or equal to the first preset thickness and smaller than the second preset thickness, controlling a heating device to heat a first outdoor heat exchanger at a first preset power;
under the condition that the frosting thickness is larger than or equal to the second preset thickness, controlling a heating device to heat a first outdoor heat exchanger at a second preset power;
wherein the first preset power is less than the second preset power.
6. The air conditioner defrost control method of claim 4 or 5, wherein controlling the heating device to heat the first outdoor heat exchanger further 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 third preset power;
when the temperature of the coil pipe is greater than or equal to the first preset temperature and less than the second preset temperature, controlling a heating device to heat a first outdoor heat exchanger at a fourth 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 fifth preset power;
the third preset power is greater than the fourth preset power, and the fourth preset power is greater than the fifth preset power.
7. The air conditioner defrost control method of claim 6, 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;
or controlling the defrosting operation to be closed under the condition that the frosting thickness is smaller than or equal to a third preset thickness, wherein the third preset thickness is smaller than the first preset thickness.
8. The air conditioner defrosting control method of claim 7, wherein controlling the defrosting operation of the air conditioner to be turned off in a case where the defrosting time is equal to or less than a first preset time period and the coil temperature is equal to or more than a third preset temperature further comprises:
and under the condition that the defrosting time is less than or equal to a third preset time and the temperature of the coil pipe is greater than 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.
9. An air conditioning control device, characterized by comprising:
an acquisition module: the frosting thickness of the current first outdoor heat exchanger is obtained;
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 frosting thickness is greater than or equal to a first preset thickness.
10. An air conditioner characterized by comprising the air conditioning control device of claim 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111265911.3A CN114061030A (en) | 2021-10-28 | 2021-10-28 | Air conditioner defrosting control method and device and air conditioner |
| PCT/CN2022/093293 WO2023071152A1 (en) | 2021-10-28 | 2022-05-17 | Air conditioner defrosting control method, control apparatus, and air conditioner |
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| CN202111265911.3A CN114061030A (en) | 2021-10-28 | 2021-10-28 | Air conditioner defrosting control method and device and air conditioner |
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| CN114061030A true CN114061030A (en) | 2022-02-18 |
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Cited By (1)
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| WO2023071152A1 (en) * | 2021-10-28 | 2023-05-04 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method, control apparatus, and air conditioner |
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| WO2023071152A1 (en) | 2023-05-04 |
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