CN117387185A - Control method and control device of air conditioner, readable storage medium and air conditioner - Google Patents
Control method and control device of air conditioner, readable storage medium and air conditioner Download PDFInfo
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- CN117387185A CN117387185A CN202311523125.8A CN202311523125A CN117387185A CN 117387185 A CN117387185 A CN 117387185A CN 202311523125 A CN202311523125 A CN 202311523125A CN 117387185 A CN117387185 A CN 117387185A
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- air conditioner
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- 238000000034 method Methods 0.000 title claims abstract description 65
- 238000010438 heat treatment Methods 0.000 claims abstract description 103
- 238000010257 thawing Methods 0.000 claims abstract description 39
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—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
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
-
- 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
- F24F11/89—Arrangement or mounting of control or safety devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method and a control device thereof for an air conditioner, a readable storage medium and the air conditioner, wherein the control method comprises the following steps: in the case of the air conditioner executing the heating mode, detecting and obtaining the outer ring temperature T of the air conditioner Outer part And outer ring humidity H Outer part The method comprises the steps of carrying out a first treatment on the surface of the According to the temperature T of the outer ring Outer part And outer ring humidity H Outer part Determining the dew point temperature T of the environment in which the air conditioner is located Dew point The method comprises the steps of carrying out a first treatment on the surface of the According to the temperature T of the outer disc of the air conditioner Outer disc And dew point temperature T Dew point By adopting the technical scheme of the invention, whether the air conditioner needs to execute the defrosting mode can be accurately confirmed, and the comfort of a user is improved.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a control method and device of an air conditioner, a readable storage medium and the air conditioner.
Background
With the development of economy, air conditioners have become an indispensable home appliance in people's life as a product capable of cooling and heating. In winter, the air conditioner starts the heating function, and frosting can occur after the outdoor heat exchanger operates for a period of time. When the frosting reaches a certain thickness, the heating effect of the air conditioner can be affected. When the temperature of the outdoor unit reaches a certain temperature, the air conditioner can perform a defrosting mode. At this time, the air conditioner is changed into a cooling mode, and the indoor temperature is reduced, thereby affecting the comfort of the user.
In the prior art, when an air conditioner runs in a heating mode, whether an air conditioner external unit has frosting risk or not can be judged, and when the air conditioner has frosting risk, the air conditioner adjusts the rotating speed of a compressor and the heating power of a heater to enable the temperature of an air conditioner heat exchanger to rise, so that the temperature of an outdoor heat exchanger external disc is higher than the frosting temperature, and the frosting of the air conditioner is avoided.
However, in the prior art, in order to avoid frosting of the heat exchanger, the heating power of the heater is frequently reduced, and the heating capacity of the air conditioner is reduced, so that the indoor temperature is reduced, and the comfort is affected.
Disclosure of Invention
In view of the above, the present invention provides a control method and a control device thereof, a readable storage medium, and an air conditioner, which are used for solving the problems of the conventional air conditioner that in order to avoid frosting of a heat exchanger, the heating power of a heater is frequently reduced, thereby reducing the indoor temperature and affecting the comfort of a user.
To this end, a first object of the present invention is to propose a control method of an air conditioner.
Another object of the present invention is to provide a control device for an air conditioner.
Another object of the present invention is to provide a readable storage medium of an air conditioner.
Another object of the present invention is to provide an air conditioner.
To achieve the first object of the present invention, the present invention provides a control method of an air conditioner, the control method comprising:
in the case of the air conditioner executing the heating mode, detecting and obtaining the outer ring temperature T of the air conditioner Outer part And outer ring humidity H Outer part ；
According to the temperature T of the outer ring Outer part And outer ring humidity H Outer part Determining the dew point temperature T of the environment in which the air conditioner is located Dew point ；
According to the temperature T of the outer disc of the air conditioner Outer disc And dew point temperature T Dew point And determining whether to control the air conditioner to perform the defrosting mode.
In the technical scheme, the obtained outer ring temperature T of the air conditioner Outer part And outer ring humidity H Outer part Calculating to obtain the dew point temperature T of the environment of the air conditioner Dew point . Next, according to the temperature T of the outer disk of the air conditioner Outer disc And dew point temperature T Dew point And judging whether the air conditioner has a frosting risk or not, so as to judge whether the air conditioner is controlled to execute the defrosting mode or not.
Further, according to the temperature T of the outer disk of the air conditioner Outer disc And dew point temperature T Dew point Is a relationship of (1) determining whether to control the air conditioner to perform a defrost mode, comprising:
at the satisfaction of T Outer disc ＞T Dew point In the case of +T1, determination controlThe air conditioner does not execute the defrosting mode; and/or
Continuously meeting T in the first target time Outer disc ＜T Dew point +T 1 In the case of (2), determining to control the air conditioner to execute the defrosting mode;
wherein T is 1 Is a constant greater than or equal to zero.
In the technical scheme, T 1 The first dew point compensation temperature represents how much lower the outer disc temperature is than the dew point temperature, and the air conditioner outer machine will frost. And judging whether the air conditioner has frosting risk or not by comparing the magnitude relation of the sum of the temperature of the outer disc, the dew point temperature and the dew point compensation temperature. When T is Outer disc ＞T Dew point +T 1 When the air conditioner is in the defrosting mode, the air conditioner is in the defrosting mode. When T is Outer disc ＜T Dew point +T 1 time The air conditioner is at risk of frosting, and the air conditioner executes the defrosting mode.
Further, the air conditioner comprises an outdoor unit, and a dehumidifying device for dehumidifying air entering the outdoor unit, and the control method further comprises:
in case that the air conditioner performs the heating mode, the dehumidifying apparatus is controlled to be turned on to reduce the outer ring humidity H by dehumidifying the air entering the outdoor unit Outer part 。
In the technical scheme, when outdoor air passes through the dehumidifying device, the moisture in the air can be reduced, and the humidity H of the outer ring is reduced Outer part Thereby lowering the dew point temperature T of the outdoor environment Dew point 。
Further, the air conditioner comprises an outdoor unit, and a heating device for heating a coil of the outdoor unit, and the control method further comprises the following steps:
in the case where it is determined to control the air conditioner to perform the defrosting mode, the heating device is controlled to operate to perform the defrosting mode.
In the technical scheme, the heating device heats the coil pipe of the outdoor unit, thereby improving the temperature T of the outer coil of the air conditioner Outer disc 。
Further, controlling the heating device to operate to perform the defrost mode specifically includes:
controlling the heating device to operate at the first gear for a second target time;
after the second target time passes, judging whether to control the heating device to lift the operation gear;
controlling the heating device to keep operating in the first gear when the heating device is determined not to be controlled to lift the operating gear, and controlling the heating device to operate in the second gear when the heating device is determined to be controlled to lift the operating gear;
wherein the second gear is higher than the first gear.
In the technical scheme, the heating device operates in a first gear when being started. After the air conditioner is operated for a period of time, judging whether the air conditioner external unit has a frosting risk, and if the air conditioner external unit has the frosting risk, operating the heating device in a second gear. By upshifting the heating device, the power consumption of the air conditioner can be reduced.
Further, determining whether to control the heating device to lift the operating gear specifically includes:
at the satisfaction of T Outer disc ＞T Dew point +T 2 Under the condition of (1), judging that the heating device is controlled not to lift the operation gear; and/or
At the satisfaction of T Outer disc ＜T Dew point +T 2 Under the condition of (1), judging and controlling the heating device to lift the operation gear;
wherein T is 2 Is a constant greater than or equal to zero.
In the technical scheme, whether the air conditioner has frosting risk is judged by comparing the outer disc temperature and the sum of the dew point temperature and the second dew point compensation temperature. When T is Outer disc ＞T Dew point +T 2 When the air conditioner is in operation, the air conditioner is not in frosting risk, and the heating device does not lift the running gear. When T is Outer disc ＜T Dew point +T 2 hours The air conditioner has frosting risk, and the heating device promotes the operation gear.
Further, the outdoor unit includes an external fan, and the control method further includes:
when the heating device is operated at the highest gear, the air inlet V of the external fan in the forward rotation state is determined Feeding in And go outAir volume V Out of And judging whether the external fan is controlled to rotate reversely.
In the technical proposal, according to the air inlet V Feeding in And air output V Out of And judging the frosting degree of the two sides of the outdoor heat exchanger, and when judging and controlling the frosting degree of the two sides of the outdoor heat exchanger to be uneven, reversing the external fan to uniformly frost the two sides of the outdoor heat exchanger.
Further, according to the air inlet V of the external fan in the forward rotation state Feeding in And air output V Out of The method for judging whether to control the external fan to rotate reversely specifically comprises the following steps:
according to the air inlet V Feeding in And air output V Out of Determining the air quantity attenuation rate delta V of the external fan in a forward rotation state;
the air quantity attenuation rate delta V and the air quantity attenuation rate threshold delta V are combined Threshold value Comparing;
in the case of meeting the requirement of delta V > delta V Threshold value In the case of (a), controlling the external fan to rotate reversely, and/or satisfying DeltaV < DeltaV Threshold value In the case of (2), the outer blower is controlled to keep rotating positively.
And judging whether to control the external fan to rotate reversely according to the comparison result.
In the technical scheme, whether the frosting degree of the front side and the back side of the outdoor heat exchanger of the air conditioner is balanced or not is judged by comparing the magnitude relation between the air quantity attenuation rate and the air quantity attenuation rate threshold value. When DeltaV < DeltaV Threshold value And when the outdoor heat exchanger is in use, the frosting degree of the front side and the back side of the outdoor heat exchanger is equivalent, and the external fan is kept to rotate positively. When DeltaV > DeltaV Threshold value When the outdoor heat exchanger is in use, the frosting degree of the front side and the back side of the outdoor heat exchanger is inconsistent, so that the reverse rotation of the outdoor fan is controlled, and the frosting of the front side and the back side of the outdoor heat exchanger is uniform, thereby achieving the effect of delaying the frosting time.
Further, the air volume attenuation rate Δv is calculated as follows: Δv= (V Feeding in -V Out of )/V Feeding in The method comprises the steps of carrying out a first treatment on the surface of the And/or
Air quantity attenuation rate threshold value delta V Threshold value The value of (2) is 30 to 50%.
In the technical scheme, the air quantity attenuation rate calculation formula has the meaning of the difference of the air quantity on the front side and the back side of the outdoor heat exchanger. The air quantity attenuation rate threshold value means that when the air quantity difference of the front side and the back side of the outdoor heat exchanger reaches a certain degree, the frosting degree of the front side and the back side of the outdoor heat exchanger is inconsistent. The degree of frosting of the front and the back of the outdoor heat exchanger can be determined by the numerical value.
To achieve the second object of the present invention, there is provided a control device of an air conditioner, the control device comprising:
the detection module is used for detecting and obtaining the temperature T of the outer ring of the regulator under the condition that the air conditioner executes a heating mode Outer part And outer ring humidity H Outer part ；
A determining module for determining the temperature T of the outer ring Outer part And outer ring humidity H Outer part Determining the dew point temperature T of the environment in which the air conditioner is located Dew point ；
The judging module is used for judging the temperature T of the outer disc of the air conditioner Outer disc And dew point temperature T Dew point And determining whether to control the air conditioner to perform the defrosting mode.
Because the control device of the air conditioner according to any one of the embodiments of the present invention uses the control method of the air conditioner according to any one of the embodiments of the present invention, the control device has all the advantages of the control method of the air conditioner according to any one of the embodiments of the present invention, and will not be described in detail herein.
To achieve the third object of the present invention, there is provided a readable storage medium of an air conditioner, on which a program or instructions are stored which, when executed by a processor, implement the steps of the control method according to any one of the aspects of the present invention.
Because the readable storage medium of the present invention uses the control method of the air conditioner of any one of the present invention, it has all the advantages of the control method of the air conditioner of any one of the present invention, and will not be described herein.
To achieve the fourth object of the present invention, the present invention provides an air conditioner, which implements the steps of the control method according to any one of the aspects of the present invention.
Because the air conditioner according to the present invention uses the control method of the air conditioner according to any one of the present invention, the air conditioner according to any one of the present invention has all the advantages of the control method of the air conditioner according to any one of the present invention, and will not be described in detail herein.
In summary, the technical scheme adopted by the invention has the following beneficial effects:
according to the control method provided by the invention, whether the air conditioner needs to execute the defrosting mode or not can be accurately confirmed. In addition, the effect of delaying the frosting time of the air conditioner and reducing the frosting times of the air conditioner is achieved. Thereby, the user's comfort of use is improved.
Drawings
Fig. 1 is a schematic flow chart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a second flow of a control method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a third flow chart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 4 is a fourth flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a control device of an air conditioner according to an embodiment of the present invention;
fig. 6 is a schematic diagram of forward rotation of an external fan of an air conditioner according to an embodiment of the present invention;
fig. 7 is a schematic diagram of reverse rotation of an external fan of an air conditioner according to an embodiment of the present invention;
fig. 8 is a schematic diagram of an air conditioner according to an embodiment of the present invention;
reference numerals illustrate:
110. a compressor; 120. an outdoor heat exchanger; 121. a dehumidifying device; 122. a heating device; 123. an external fan; 130. an indoor heat exchanger; 131. an inner fan; 140. a four-way valve; 150. a throttle device; 200. a control device; 210. a detection module; 220. a determining module; 230. and a judging module.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
The following describes some embodiments of the present invention with reference to fig. 1 to 8.
Example 1:
as shown in fig. 1, the present embodiment provides a control method of an air conditioner, including the following steps:
s100: in the case of the air conditioner executing the heating mode, detecting and obtaining the outer ring temperature T of the air conditioner Outer part And outer ring humidity H Outer part ；
S200: according to the temperature T of the outer ring Outer part And outer ring humidity H Outer part Determining the dew point temperature T of the environment in which the air conditioner is located Dew point ；
S300: according to the temperature T of the outer disc of the air conditioner Outer disc And dew point temperature T Dew point And determining whether to control the air conditioner to perform the defrosting mode.
In the conventional art, in the heating mode of the air conditioner, frost is generated on the surface of the outdoor heat exchanger 120 of the air conditioner mainly because: when the surface temperature of the outdoor heat exchanger 120 is lower than the outdoor dew point temperature, moisture in the air is separated out and condensed on the surface of the heat exchanger, and at this time, if the surface temperature of the heat exchanger is lower than 0 ℃, the separated moisture is frosted on the surface of the outdoor heat exchanger 120. As the frost layer gradually accumulates, the heating effect of the air conditioner may decrease.
In order to solve the above-mentioned problems, the present embodiment provides a control method of an air conditioner, in which, first, in the case where the air conditioner performs a heating mode, an outdoor temperature outer ring temperature T of the air conditioner is detected and obtained Outer part And the outdoor humidity outer ring humidity H of the air conditioner Outer part . According to the outer ring temperature and the outer ring humidity, calculating to obtain the dew point temperature T of the environment where the air conditioner is located Dew point . After the dew point temperature is obtained,based on dew point temperature and outside coil temperature T of the outside coil of the outdoor heat exchanger 120 Outer disc In comparison, it is confirmed whether or not the outdoor heat exchanger 120 is at risk of frosting. When there is a risk of frosting of the outdoor heat exchanger 120, the air conditioner is controlled to perform a defrosting mode. Embodiments of the present invention determine dew point temperature by temperature and humidity of an outdoor environment. Therefore, when the temperature and humidity of the outdoor environment change, the corresponding dew point temperature also changes. By obtaining the real-time dew point temperature and the outer disc temperature, whether the air conditioner needs to start a defrosting mode or not can be accurately confirmed, so that the waste of electric energy caused by frequent starting of the defrosting mode is avoided, and the reduction of heating capacity caused by excessive thickness of a frost layer can also be avoided.
The initial value is calculated by the calculation formula of the dew point temperature by using a Margaret formula, and the dew point temperature is calculated by using a successive approximation (at most 3 times) method. The manner in which the dew point temperature is obtained in the present embodiment may be implemented in other ways than described herein, for example, the goff-g Lei Ji formula may be used to obtain the dew point temperature in other ways.
Example 2:
in the above embodiment 1, a control method of an air conditioner is provided according to the temperature T of the outer panel of the air conditioner Outer disc And dew point temperature T Dew point Is a relationship of (1) determining whether to control the air conditioner to perform a defrost mode, comprising:
s301: at the satisfaction of T Outer disc ＞T Dew point +T 1 In the case of (2), determining that the control air conditioner does not perform the defrosting mode; and/or
S302: continuously meeting T in the first target time Outer disc ＜T Dew point +T 1 In the case of (2), determining to control the air conditioner to execute the defrosting mode;
wherein T is 1 Is a constant greater than or equal to zero.
Specifically, when T Outer disc ＞T Dew point +T 1 When the air is in the defrosting mode, moisture in the air is not separated out, and the outdoor heat exchanger 120 is not in the frosting risk, so that the air conditioner is judged not to execute the defrosting mode; when T is Outer disc ＜T Dew point +T 1 And (2) andwhen the first target time is continuously met, water in the air is separated out and condensed on the surface of the outdoor heat exchanger 120, and the outdoor heat exchanger 120 is at risk of frosting, so that the air conditioner is controlled to execute a defrosting mode at the moment. By judging the relation between the outer disc temperature and the dew point temperature, whether the air conditioner is in the frosting risk or not can be accurately judged, and therefore the air conditioner can accurately execute the defrosting mode.
In the outdoor environment, when the outer disc temperature of the outdoor heat exchanger 120 is higher than the dew point temperature by a certain temperature, the outdoor heat exchanger 120 starts to frost, and the difference between the outer disc temperature and the dew point temperature is the first dew point compensation temperature. The first dew point compensation temperature is a constant greater than or equal to zero. In this embodiment, the first dew point compensation temperature may be determined by a person skilled in the art according to the actual environment by using the difference between the outer disc temperature and the dew point temperature when the air conditioner frosts.
It should be noted that, when the temperature of the outer disc of the outdoor heat exchanger 120 is less than the sum of the dew point temperature and the dew point compensation temperature, the outdoor heat exchanger 120 needs to maintain the first target time, and frosting may start. The first target time in this embodiment is set to 3 minutes, and a person skilled in the art can set the first target time according to the actual environment.
Example 3:
as shown in fig. 2, the above-mentioned embodiment 1 provides a control method of an air conditioner, wherein the air conditioner includes an outdoor unit, and a dehumidifying device 121 for dehumidifying air entering the outdoor unit, the control method further comprising:
s101: in the case where the air conditioner performs the heating mode, the dehumidifying apparatus 121 is controlled to be turned on to reduce the outer ring humidity H by dehumidifying air entering the outdoor unit Outer part 。
Specifically, the outdoor unit of the air conditioner is provided with a dehumidifying device 121, and the outdoor air exchanges heat with the outdoor unit after passing through the dehumidifying device 121. In the case where the air conditioner performs the heating mode, the dehumidifying apparatus 121 is controlled to be turned on. In this case, when the outdoor air passes through the dehumidifying device 121, the moisture in the air can be reduced, and the dew point temperature can be lowered. The dehumidifying device 121 can effectively reduce the dew point temperature, thereby delaying the frosting time of the air conditioner and improving the comfort of users.
Example 4:
as shown in fig. 2, the above embodiment 1 provides a control method of an air conditioner, wherein the air conditioner includes an outdoor unit, and a heating device 122 for heating a coil of the outdoor unit, and the control method further includes:
s303: in the case where it is determined to control the air conditioner to perform the defrosting mode, the heating device 122 is controlled to operate to perform the defrosting mode.
Specifically, the outdoor unit of the air conditioner is provided with a heating device 122, and the heating device 122 is used for heating the coil pipe of the external heat exchanger 120. When the temperature of the outer disc of the outdoor heat exchanger 120 is less than the sum of the dew point temperature and the dew point compensation temperature and continuously meets the first target time, water in the air is separated out and condensed on the surface of the outdoor heat exchanger 120, the outdoor heat exchanger 120 has a frosting risk, at this time, the air conditioner is controlled to execute a defrosting mode, and the heating device 122 is started to execute the defrosting mode. The heat emitted by the heating device 122 can raise the temperature of the outer plate of the coil of the outdoor heat exchanger 120, and avoid the temperature of the outer plate being lower than the dew point temperature, thereby delaying the frosting time of the air conditioner and improving the use comfort of users.
Example 5:
as shown in fig. 3, the above embodiment 4 provides a control method of an air conditioner, which controls a heating device to operate to perform a defrosting mode, and specifically includes:
s3031: controlling the heating device to operate at the first gear for a second target time;
s3032: after the second target time elapses, it is determined whether to control the heating device 122 to raise the operating range;
s3033: in the case where it is determined that the heating device 122 is not controlled to raise the operation range, the heating device 122 is controlled to remain operated in the first range, and in the case where it is determined that the heating device 122 is controlled to raise the operation range, the heating device 122 is controlled to operate in the second range;
wherein the second gear is higher than the first gear.
Specifically, when there is a risk of frosting of the air conditioner, the heating device 122 is controlled to operate to perform a defrosting mode. The heating device 122 is operated in a first gear when on. And after the second target time is operated, judging whether the air conditioner has a frosting risk at the moment. If there is no risk of frosting, the heating device 122 is controlled to keep the first gear running. If there is a risk of frosting, the heating device 122 is controlled to operate in the second gear. By the heating device 122 according to the actual control gear, a reduction in power consumption of the heating device 122 and thus a reduction in power consumption of the air conditioner can be achieved.
In the present embodiment, the first gear and the second gear refer to that the heating device 122 operates with different operating powers, and the operating powers are sequentially set from small to large. Meanwhile, the gear set by the heating device 122 in this embodiment may be a plurality of gears, for example, the heating device 122 sets a first gear, a second gear, a third gear, and a fourth gear. The highest gear is the gear with the highest running power.
Example 6:
in the above embodiment 5, a control method of an air conditioner is provided, which determines whether to control the heating device 122 to raise the operating range, and specifically includes:
s30321: at the satisfaction of T Outer disc ＞T Dew point +T 2 Under the condition of (1), judging that the heating device is controlled not to lift the operation gear; and/or
S30322: at the satisfaction of T Outer disc ＜ Dew point +T 2 In the case of (a), it is determined that the heating device 122 is controlled to raise the operating range;
wherein T is 2 Is a constant greater than or equal to zero.
Specifically, after the heating device 122 operates for the second target time in the first gear, it is determined whether the air conditioner has a frosting risk at this time. When T is Outer disc ＞T Dew point +T 2 When the air conditioner does not have the frost risk, the heating device 122 is controlled to keep the current gear running. When T is Outer disc ＜ Dew point +T 2 When the air conditioner is at risk of frosting, the heating device 122 is controlled to lift the operation gear. Heating device 1 after lifting operation gear22, the temperature of the outer disc of the outdoor heat exchanger 120 increases to avoid that the outer disc temperature is lower than the dew point temperature. By determining the relationship between the outside plate temperature and the dew point temperature, it is possible to accurately determine whether the air conditioner is at risk of frosting, thereby enabling the air conditioner to accurately control the upshift operation of the heating device 122.
When the heating device 122 is turned on, the heat exchanger starts to frost when the outer disc temperature of the heat exchanger is higher than the dew point temperature by a certain temperature, and the difference between the outer disc temperature and the dew point temperature is the second dew point compensation temperature. The second dew point compensation temperature is a constant greater than or equal to zero. In this embodiment, the second dew point compensation temperature may be determined by a person skilled in the art according to the actual environment by using the difference between the temperature of the outer disc and the dew point temperature when the air conditioner frosts.
Example 7:
as shown in fig. 1 and 6, in the above embodiment 4, there is provided a control method of an air conditioner, wherein the outdoor unit includes an outdoor fan 123, the control method further including:
s304: in the case where the heating device 122 is operated in the highest gear, the intake air volume V in the normal rotation state according to the external fan 123 Feeding in And air output V Out of It is determined whether the external fan 123 is controlled to reverse.
Specifically, in the case where the heating device is operated at the highest gear, the outer fan 123 rotates in the forward direction, and the outer fan 123 drives air to flow, thereby exchanging heat with the outdoor heat exchanger 120. When the outdoor heat exchanger 120 starts to frost, the outdoor heat exchanger 120 is blown by the outdoor fan 123, wherein the surface of the outdoor heat exchanger 120 blown by the outdoor fan 123 has a higher degree of frost than the surface not blown by the outdoor fan 123, as shown in fig. 6. The surface blown by the external fan 123 is the windward surface of the outdoor heat exchanger 120, and the wind speed of the windward surface is the wind inlet V Feeding in . The surface not blown by the external fan 123 is the lee surface of the outdoor heat exchanger 120, and the wind speed of the lee surface is the wind output V Out of . According to the air inlet V Feeding in And air output V Out of It is possible to judge whether the degree of frosting of both sides of the outdoor heat exchanger 120 is uniform. Frosting on both sides of the outdoor heat exchanger 120The degree of non-uniformity, i.e. the frosting degree of one side is greater than that of the other side, can occur that the outdoor heat exchanger 120 frosts fast, and the air conditioner enters the defrosting mode soon. Based on this, the present embodiment provides a control method according to the air intake V Feeding in And air output V Out of When the frosting degree of the two sides of the outdoor heat exchanger 120 is judged to be uneven, the outdoor fan 123 is controlled to rotate reversely, so that the frosting speeds of the two sides of the outdoor heat exchanger 120 are exchanged, and the two sides of the outdoor heat exchanger 120 are uniformly frosted. By reversing the outer fan 123, the time of frosting of the air conditioner is delayed, the number of times of frosting operation of the air conditioner is reduced, and therefore the use comfort of a user is improved.
Example 8:
as shown in fig. 6 and 7, the above embodiment 7 provides a control method of an air conditioner according to the air intake V of the external fan 123 in the forward rotation state Feeding in And air output V Out of The determining whether to control the external fan 123 to reverse specifically includes:
s3041: according to the air inlet V Feeding in And the air output V Out of Determining the air quantity attenuation rate delta V of the outer fan 123 in a forward rotation state;
s3042: the air quantity attenuation rate delta V and the air quantity attenuation rate threshold delta V are combined Threshold value Comparing;
s3043: in the case of meeting the requirement of delta V > delta V Threshold value In the case of (2), the external fan 123 is controlled to reverse rotation, and/or when ΔV < ΔV is satisfied Threshold value In the case of (2), the outer blower 123 is controlled to maintain the normal rotation.
Specifically, according to the air intake V Feeding in And air output V Out of The air volume attenuation rate Δv of the outer fan 123 in the forward rotation state is calculated. The air quantity attenuation rate delta V and the air quantity attenuation rate threshold delta V are combined Threshold value Comparing when DeltaV > DeltaV Threshold value In this case, the outdoor heat exchanger 120 is not uniform in frosting degree on both sides, and the external fan 123 is controlled to rotate reversely. When DeltaV < DeltaV Threshold value The frosting degree of the two sides of the outdoor heat exchanger 120 is uniform, and the forward rotation of the outdoor fan 123 is controlled and maintained. By comparing the air volume attenuation rate with the air volume attenuation rate threshold, the frosting degree of the two sides of the outdoor heat exchanger 120 can be accurately judged, and thus the external fan 123 can be accurately controlled.
The air volume attenuation rate means how much the air volume on the front and back sides of the outdoor heat exchanger 120 is different. The air quantity attenuation rate threshold value means that when the air quantity difference between the front side and the back side of the outdoor heat exchanger 120 is more or less, the frosting degree of the front side and the back side of the outdoor heat exchanger 120 is not consistent.
Example 9:
the above embodiment 8 provides a control method of an air conditioner, wherein the air volume attenuation rate Δv is calculated as follows: Δv= (V Feeding in -V Out of )/V Feeding in The method comprises the steps of carrying out a first treatment on the surface of the Air quantity attenuation rate threshold value delta V Threshold value The value of (2) is 30 to 50%.
In the present embodiment, the attenuation rate threshold Δv of the wind amount Threshold value The value of (2) is 30 to 50%. The air volume attenuation rate threshold can be set by a person skilled in the art according to the actual environment.
Example 10:
as shown in fig. 5, the present embodiment provides a control device 200 of an air conditioner, including:
the detection module 210, the detection module 210 is configured to detect and obtain an outer ring temperature T of the air conditioner when the air conditioner executes a heating mode Outer part And outer ring humidity H Outer part ；
A determining module 220, the determining module 220 is used for determining the temperature T of the outer ring Outer part And outer ring humidity H Outer part Determining the dew point temperature T of the environment in which the air conditioner is located Dew point ；
A determining module 230, wherein the determining module 230 is configured to determine an outside tray temperature T of the air conditioner Outer disc And dew point temperature T Dew point And determining whether to control the air conditioner to perform the defrosting mode.
Specifically, the control device 200 of the air conditioner provided in this embodiment detects and obtains the temperature T of the outer ring of the air conditioner through the detection module 210 when the air conditioner operates in the heating mode Outer part And outer ring humidity H Outer part According to the determination module 220, the dew point temperature T of the environment of the air conditioner is determined Dew point Finally, the determining module 230 determines the temperature T of the outer panel of the air conditioner Outer disc And dew point temperature T Dew point Relation of (2)It is determined whether to control the air conditioner to perform the defrost mode. The implementation of the embodiment of the present invention is realized by the control device 200 of the air conditioner.
Example 11:
the present embodiment provides a readable storage medium on which a program or instructions are stored which, when executed by a processor, implement the steps of the control method of any of the above embodiments.
Any combination of one or more computer readable media may be employed for the above-described readable storage media. The readable storage medium may be a computer readable signal medium or a computer readable storage medium. The readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory; EPROM) or flash Memory, an optical fiber, a portable compact disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
Example 12:
the present embodiment provides an air conditioner, implementing the steps of the control method of any one of the above embodiments.
Specifically, in practical applications, the air conditioner includes: indoor unit and off-premises station, wherein the indoor unit includes: an indoor heat exchanger 130, an inner fan 131; the outdoor unit includes: a compressor 110, an outdoor heat exchanger 120, a dehumidifier 121, a heater 122, an external fan 123, a four-way valve 140, and a throttle device 150; as shown in fig. 8, in which the four-way valve 140 connects the compressor 110, the outdoor heat exchanger 120 and the indoor heat exchanger 130, the outdoor heat exchanger 120 is connected with the outdoor heat exchanger 120 and the throttle device 150 to be connected with each other by pipes to form a circulation system; the outer fan 123 faces the outdoor heat exchanger 120, and the inner fan 131 faces the indoor heat exchanger 130; the dehumidifying device 121 and the heating device 122 are provided in the outdoor unit. In practical application, the dehumidifying device 121 reduces the moisture in the air, so as to reduce the dew point temperature, the heating device 122 increases the temperature of the outer disc, and the outer fan reverses to uniformly frost the two sides of the outdoor heat exchanger 120, so that the frosting time can be delayed, the frosting times of the air conditioner can be reduced, and the comfort of the user can be improved.
As shown in fig. 1, 2, 3 and 4, the present embodiment provides a specific control method of an air conditioner, including: in case that the air conditioner performs the heating mode, the dehumidifying device 121 is controlled to be turned on to dehumidify the air entering the outdoor unit, reducing the outer ring humidity H Outer part . Detecting and obtaining outdoor temperature outer ring temperature T of air conditioner Outer part And the outdoor humidity outer ring humidity H of the air conditioner Outer part . According to the outer ring temperature and the outer ring humidity, calculating to obtain the dew point temperature T of the environment where the air conditioner is located Dew point . After the dew point temperature is obtained, it is confirmed whether or not the outdoor heat exchanger 120 is at risk of frosting, based on comparison between the dew point temperature and the outer coil temperature of the outer coil of the outdoor heat exchanger 120. When T is Outer disc ＞T Dew point +T 1 When there is no risk of frosting of the outdoor heat exchanger 120, it is determined that the air conditioner does not perform the defrosting mode. When T is Outer disc ＜T Dew point +T 1 And the outdoor heat exchanger 120 is at risk of frosting while continuously satisfying the first target time, the heating device 122 is controlled to operate at this time to perform the defrosting mode. The heating device 122 is operated in a first gear when on. And after the second target time is operated, judging whether the air conditioner has a frosting risk at the moment. When T is Outer disc ＞T Dew point +T 2 When there is no risk of frosting, the heating device 122 is controlled to keep the first gear running; when T is Outer disc ＜T Dew point +T 2 When there is a risk of frosting, the heating device is controlled to operate in the second gear. In the case that the heating device is operated in the highest gear, the outer fan 123 is rotated in the forward direction according toIntake V of outer fan 123 in forward rotation Feeding in And air output V Out of And calculating to obtain the air quantity attenuation rate delta V. Comparing the air quantity attenuation rate DeltaV with the air quantity attenuation rate threshold DeltaV, when DeltaV is larger than DeltaV Threshold value In this case, the outdoor heat exchanger 120 is not uniform in frosting degree on both sides, and the external fan 123 is controlled to rotate reversely. When DeltaV < DeltaV Threshold value And the frosting degree of the two sides of the outdoor heat exchanger 120 is uniform, and the forward rotation of the external fan 123 is controlled and maintained.
The dehumidifying device 121 reduces the moisture in the air, thereby reducing the dew point temperature, the heating device 122 increases the outer disc temperature, the outer fan 123 reverses to make the frosting on both sides of the outdoor heat exchanger 120 uniform, and the purposes of delaying the frosting time of the air conditioner, reducing the frosting times of the air conditioner and improving the comfort of users are achieved through the above mode.
In the present disclosure, the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or unit referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (12)
1. A control method of an air conditioner, the control method comprising:
detecting and obtaining the temperature T of the outer ring of the air conditioner under the condition that the air conditioner executes a heating mode Outer part And outer ring humidity H Outer part ；
According to the outer ring temperature T Outer part And the outer ring humidity H Outer part Determining the dew point temperature T of the environment of the air conditioner Dew point ；
According to the temperature T of the outer disc of the air conditioner Outer disc And the dew point temperature T Dew point And determining whether to control the air conditioner to perform a defrost mode.
2. The control method according to claim 1, wherein the temperature T of the outside tray of the air conditioner Outer disc And the dew point temperature T Dew point Is a relationship of (1) determining whether to control the air conditioner to perform a defrosting mode, specifically including:
at the satisfaction of T Outer disc ＞T Dew point +T 1 In the case of (a), it is determined to control the air conditioner not to perform the defrosting mode; and/or
Continuously meeting T in the first target time Outer disc ＜ Dew point +T 1 In the case of (a), determining to control the air conditioner to perform the defrosting mode;
wherein T is 1 Is a constant greater than or equal to zero.
3. The control method according to claim 1 or 2, wherein the air conditioner includes an outdoor unit, and a dehumidifying device for dehumidifying air entering the outdoor unit, the control method further comprising:
when the air conditioner executes the heating mode, the dehumidifying device is controlled to be started so as to reduce the outer ring humidity H by dehumidifying the air entering the outdoor unit Outer part 。
4. The control method according to claim 1 or 2, wherein the air conditioner includes an outdoor unit, and a heating device for coil heating of the outdoor unit, the control method further comprising:
and controlling the heating device to operate to execute the defrosting mode in the case that it is determined to control the air conditioner to execute the defrosting mode.
5. The control method according to claim 4, characterized in that the controlling the heating device to operate to perform the defrosting mode specifically includes:
controlling the heating device to operate in a first gear for a second target time;
after the second target time passes, judging whether to control the heating device to lift the operation gear;
controlling the heating device to remain operating in the first gear when it is determined that the heating device lifting operation gear is not controlled, and controlling the heating device to operate in a second gear when it is determined that the heating device lifting operation gear is controlled;
wherein the second gear is higher than the first gear.
6. The control method according to claim 5, wherein the determining whether to control the heating device to raise an operating range includes:
at the satisfaction of T Outer disc ＞T Dew point +T 2 Under the condition of (1), judging and controlling the heating device not to lift the operation gear; and/or
At the satisfaction of T Outer disc ＜ Dew point +T 2 Under the condition of (1), judging and controlling the heating device to lift the operation gear;
wherein T is 2 Is a constant greater than or equal to zero.
7. The control method according to claim 4, wherein the outdoor unit includes an outdoor fan, the control method further comprising:
when the heating device runs at the highest gear, the air inlet V of the external fan in the forward rotation state is based on Feeding in And air output V Out of And judging whether the external fan is controlled to rotate reversely or not.
8. The control method according to claim 7, wherein the air intake volume V of the external fan in the forward rotation state Feeding in And air output V Out of The method for judging whether to control the external fan to rotate reversely specifically comprises the following steps:
according to the air inlet V Feeding in And the air output V Out of Determining the air quantity attenuation rate delta V of the outer fan in a forward rotation state;
the air quantity attenuation rate delta V and the air quantity attenuation rate threshold delta V are set Threshold value Comparing;
in the case of meeting the requirement of delta V > delta V Threshold value In the case of (a), controlling the external fan to rotate reversely, and/or satisfying DeltaV < DeltaV Threshold value Under the condition of (1), controlling the external fan to keep rotating positively;
and judging whether to control the external fan to rotate reversely according to the comparison result.
9. The control method according to claim 8, wherein,
the air volume attenuation rate DeltaV is calculated as follows: Δv= (V Feeding in -V Out of )/V Feeding in The method comprises the steps of carrying out a first treatment on the surface of the And/or
The air quantity is attenuatedRate threshold DeltaV Threshold value The value of (2) is 30 to 50%.
10. A control device of an air conditioner, the control device comprising:
the detection module is used for detecting and obtaining the temperature T of the outer ring of the air conditioner under the condition that the air conditioner executes a heating mode Outer part And outer ring humidity H Outer part ；
A determining module for determining the temperature T of the outer ring Outer part And the outer ring humidity H Outer part Determining the dew point temperature T of the environment of the air conditioner Dew point ；
The judging module is used for judging the temperature T of the outer disc of the air conditioner Outer disc And the dew point temperature T Dew point And determining whether to control the air conditioner to perform a defrost mode.
11. A readable storage medium, characterized in that it stores thereon a program or instructions that, when executed by a processor, implement the steps of the control method according to any one of claims 1 to 9.
12. An air conditioner characterized in that the air conditioner realizes the steps of the control method according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311523125.8A CN117387185A (en) | 2023-11-14 | 2023-11-14 | Control method and control device of air conditioner, readable storage medium and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311523125.8A CN117387185A (en) | 2023-11-14 | 2023-11-14 | Control method and control device of air conditioner, readable storage medium and air conditioner |
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| CN117387185A true CN117387185A (en) | 2024-01-12 |
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| CN202311523125.8A Pending CN117387185A (en) | 2023-11-14 | 2023-11-14 | Control method and control device of air conditioner, readable storage medium and air conditioner |
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| CN (1) | CN117387185A (en) |
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