CN114893868B - Dehumidification control method and device of air conditioner and air conditioner - Google Patents

Dehumidification control method and device of air conditioner and air conditioner Download PDF

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Publication number
CN114893868B
CN114893868B CN202210605777.5A CN202210605777A CN114893868B CN 114893868 B CN114893868 B CN 114893868B CN 202210605777 A CN202210605777 A CN 202210605777A CN 114893868 B CN114893868 B CN 114893868B
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temperature
preset
frequency
compressor
dehumidification
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CN114893868A (en
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殷铭瑞
柏秋实
徐源鸿
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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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
    • F24F11/43—Defrosting; Preventing freezing of indoor 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
    • F24F11/62—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
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • 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)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a dehumidification control method and device of an air conditioner and the air conditioner. The dehumidification control method comprises the following steps: in a strong dehumidification mode, controlling the rotating speed of an inner fan and the frequency of a compressor to cool the temperature of the indoor heat exchanger coil; monitoring the temperature of the coil pipe, and judging whether the temperature of the coil pipe reaches a first preset temperature; if yes, controlling the rotating speed to run for a preset time when the temperature of the inner fan maintaining coil reaches a first preset temperature, and controlling the frequency to run for a preset time when the temperature of the compressor maintaining coil reaches the first preset temperature. According to the dehumidification control method provided by the invention, the rotation speed of the inner fan and the frequency of the compressor are controlled, so that on one hand, the circulating air quantity passing through the coil pipe can be ensured, and on the other hand, the temperature of the coil pipe can be kept near 0 ℃, thereby greatly improving the dehumidification quantity and the dehumidification efficiency, and realizing strong dehumidification.

Description

Dehumidification control method and device of air conditioner and air conditioner
Technical Field
The invention belongs to the field of air conditioners, and particularly relates to a dehumidification control method and device of an air conditioner and the air conditioner.
Background
The dehumidification function of the existing air conditioner is generally that the temperature of an indoor coil is reduced to be lower than the ambient dew point temperature by reducing the rotating speed of an inner fan on the basis of a refrigeration mode, when ambient air passes through the indoor coil, water vapor can be condensed on the indoor coil, and then condensed water on the indoor coil is collected through a water receiving disc and then discharged to the outdoor side through a drain pipe. Taking the common 27/24 national standard condensation working condition as an example, the relative humidity of ambient air is 72%, the absolute moisture content is 17.593g/Kg, when the temperature of an indoor coil pipe is reduced to be near the dew point 22 ℃, the absolute moisture content is 12.916g/Kg, only 4.677g/Kg can be removed, and the circulating air quantity is reduced due to the fact that the rotating speed of an indoor fan is reduced, so that the dehumidifying efficiency is not high. For users in the south of China, wet weather is often encountered, and the dehumidifying function of the air conditioner is often required to purchase a dehumidifier additionally due to insufficient dehumidifying capability, so that the dehumidifier is very inconvenient and requires additional consumption and purchase.
The present invention has been made in view of this.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a dehumidification control method and device of an air conditioner, a storage medium and the air conditioner. According to the scheme, the rotating speed of the inner fan and the frequency of the compressor are controlled, so that on one hand, the circulating air quantity passing through the coil pipe can be ensured, and on the other hand, the temperature of the coil pipe can be kept near 0 ℃, and therefore the dehumidification quantity and the dehumidification efficiency are greatly improved, and the powerful dehumidification effect is achieved.
In order to solve the above technical problem, a first aspect of the present invention provides a dehumidification control method of an air conditioner, where the air conditioner is provided with a powerful dehumidification mode, the control method includes: in a strong dehumidification mode, controlling the rotating speed of an inner fan and the frequency of a compressor to cool the temperature of the indoor heat exchanger coil; monitoring the temperature of the coil pipe, and judging whether the temperature of the coil pipe reaches a first preset temperature; if yes, controlling the rotating speed to run for a preset time when the temperature of the inner fan maintaining coil reaches a first preset temperature, and controlling the frequency to run for a preset time when the temperature of the compressor maintaining coil reaches the first preset temperature.
In the above technical solution, preferably, when it is determined that the coil temperature does not reach the first preset temperature, it is determined whether the frequency of the compressor reaches the frequency upper limit value; if yes, controlling the operation preset time of the upper limit value of the maintenance frequency of the compressor and the rotation speed operation preset time when the maintenance frequency of the inner fan reaches the upper limit value of the frequency; if not, the temperature of the coil is monitored again, and whether the temperature of the coil reaches the first preset temperature is judged.
In the above technical solution, preferably, the value range of the first preset temperature is greater than or equal to 0 ℃ and less than or equal to 5 ℃.
In any of the above solutions, preferably, the step of controlling the rotation speed of the inner fan and the frequency of the compressor so as to make the temperature of the indoor heat exchanger coil reach a first preset temperature includes: the inner fan is controlled to run at a first preset rotating speed, and the compressor is controlled to run at a first preset regular ascending frequency, so that the temperature of the coil reaches a first preset temperature.
In any of the above solutions, preferably, the step of controlling the compressor to operate at a first preset regular frequency increase includes: controlling the compressor to perform frequency raising at a first preset frequency raising speed; judging whether the temperature of the coil pipe reaches a second preset temperature; if yes, reducing the frequency raising speed of the compressor to a second preset frequency raising speed; wherein the second preset temperature is higher than the first preset temperature.
In any of the above solutions, preferably, after the inner fan is operated for a preset time at a rotational speed when the coil temperature reaches the first preset temperature and the compressor is operated for a preset time at a frequency when the coil temperature reaches the first preset temperature, the dehumidification control method further includes: continuously monitoring the temperature of the coil; and adjusting the rotating speed of the inner fan and the frequency of the compressor according to the temperature of the coil pipe.
In any of the above solutions, preferably, the step of adjusting the rotation speed of the inner fan and the frequency of the compressor according to the coil temperature includes: judging whether the temperature of the coil reaches a third preset temperature or whether the falling speed of the temperature of the coil is greater than or equal to a preset falling speed; if yes, the rotating speed of the inner fan is increased to a second preset rotating speed, and the compressor is controlled to run in a frequency-reducing mode according to a second preset rule until the temperature of the coil pipe is increased to a fourth preset temperature. Wherein the third preset temperature is lower than the first preset temperature, and the fourth preset temperature is higher than the first preset temperature.
In any of the above solutions, preferably, the step of controlling the compressor to perform the frequency-reducing operation according to a second preset rule includes: and controlling the compressor to perform frequency reduction at a first preset frequency reduction speed, wherein the first preset frequency reduction speed is greater than the second preset frequency increase speed.
In any of the above solutions, preferably, before the step of controlling the inner fan to operate at a first preset rotational speed and controlling the compressor to operate at a first preset regular frequency increase, the control method further includes: and controlling the inner fan to operate at a first preset rotating speed and controlling the compressor to operate at a first preset frequency for a first preset time period.
In any of the foregoing solutions, preferably, the control method further includes: responding to a control instruction for exiting the powerful dehumidification mode; and controlling the compressor to stop, increasing the rotating speed of the inner fan to be a third preset rotating speed, and running for a third preset time period.
In any of the foregoing solutions, preferably, the control method further includes: responding to a dehumidification instruction, and acquiring indoor environment humidity; judging whether the indoor environment humidity is greater than or equal to a first humidity threshold; if yes, entering a powerful dehumidification mode; if not, entering a conventional dehumidification mode.
In any of the foregoing technical solutions, preferably, in the efficient dehumidification mode, the control method further includes: judging whether the indoor environment humidity is less than or equal to a second humidity threshold value; if yes, exiting the powerful dehumidification mode, and operating in the conventional dehumidification mode.
In any of the foregoing technical solutions, preferably, in the efficient dehumidification mode, the control method further includes: judging whether the difference between the temperature of the coil and the first preset temperature is in a preset temperature interval or not and the duration reaches a second preset duration; if yes, exiting the powerful dehumidification mode, and operating in the conventional dehumidification mode.
In any of the foregoing solutions, preferably, during operation of the compressor at the first preset frequency, the control method further includes: acquiring indoor environment temperature; and determining whether to exit the powerful dehumidification mode according to the indoor environment temperature and the coil temperature.
In any of the above technical solutions, preferably, the step of determining whether to exit the powerful dehumidification mode according to the indoor environment temperature and the coil temperature includes: calculating the difference between the average temperature of the indoor environment temperature and the average temperature of the coil temperature; judging whether the difference value is smaller than a fifth preset temperature; if yes, controlling the compressor to operate at a first preset regular ascending frequency after the compressor operates at a first preset frequency for a first preset time period; if not, exiting the powerful dehumidification mode, and operating in the conventional dehumidification mode.
A second aspect of the present invention provides a dehumidification control device of an air conditioner, comprising one or more processors and a non-transitory computer-readable storage medium storing program instructions, the one or more processors being configured to implement the method of any one of the above-described aspects when the one or more processors execute the program instructions.
A fourth aspect of the present invention provides an air conditioner employing the method of any one of the above-described aspects, or a dehumidification control device including the above-described aspects, or a non-transitory computer-readable storage medium having the above-described aspects.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects: the dehumidifying amount of the air conditioner can be greatly improved. Taking the common 27/24 national standard condensation working condition as an example, the relative humidity of ambient air is 72%, the absolute moisture content is 17.593g/Kg, the indoor coil temperature in the conventional dehumidification mode is generally reduced to be near the dew point 22 ℃, the absolute moisture content is 12.916g/Kg, only 4.677g/Kg can be removed, and in the powerful dehumidification mode, the air near the coil temperature is near 0 ℃, the absolute moisture content of air is 2.936g/Kg, the dehumidification is 14.6g/Kg, and the dehumidification capacity is greatly improved. Meanwhile, after the strong dehumidification mode is entered, as the coil pipe can be gradually frosted, according to the research of related documents, frost crystals which are independently dispersed at the initial stage of frosting are similar to fins, so that the effect of enhancing heat transfer can be achieved, and the dehumidification efficiency is improved. In addition, the whole dehumidification process does not need to reduce the rotating speed of the indoor inner fan, but controls the inner fan to operate at a higher rotating speed, so that the dehumidification efficiency can be improved.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:
fig. 1 is a flow chart of a dehumidification control method of an air conditioner according to an embodiment of the present invention.
Fig. 2 is a second flowchart of a dehumidification control method of an air conditioner according to an embodiment of the present invention.
Fig. 3 is a third flow chart of a dehumidification control method of an air conditioner according to an embodiment of the present invention.
Fig. 4 is a flowchart illustrating a method for controlling dehumidification of an air conditioner according to an embodiment of the present invention.
Fig. 5 is a flowchart of a method for controlling dehumidification of an air conditioner according to an embodiment of the present invention.
Fig. 6 is a flowchart illustrating a method for controlling dehumidification of an air conditioner according to an embodiment of the present invention.
Fig. 7 is a flowchart of a method for controlling dehumidification of an air conditioner according to an embodiment of the present invention.
Fig. 8 is a flowchart illustrating a method for controlling dehumidification of an air conditioner according to an embodiment of the present invention.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "contacting," and "communicating" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In each embodiment of the invention, the corresponding air conditioner is provided with a powerful dehumidification mode and a conventional dehumidification mode, the indoor heat exchanger coil is provided with a temperature sensor, the rotating speed of the inner fan can be adjusted within a certain range through the control unit so as to adjust the circulating air quantity, the frequency of the compressor can be adjusted through the control unit so as to adjust the capacity output, the air conditioner provides users with certain control modes such as a remote controller, WIFI control, a manual operator and the like, and the users can select the operation modes of the air conditioner such as the powerful dehumidification mode, the conventional dehumidification mode, the refrigeration mode, the heating mode and the like through the modes.
In the conventional dehumidification mode, the inner fan is controlled to operate at a lower rotation speed (less than a first preset rotation speed, generally the lowest rotation speed) so that the temperature of the indoor heat exchanger coil is reduced to a dew point temperature (generally 22 ℃), and water vapor is condensed on the indoor coil when ambient air passes through the indoor coil, so that dehumidification is achieved.
Example 1
Fig. 1 shows one of flow charts of a dehumidification control method of an air conditioner according to an embodiment of the present invention. As shown in fig. 1, the dehumidification control method includes:
step 101, in a strong dehumidification mode, controlling the rotating speed of an inner fan and the frequency of a compressor to cool the temperature of a coil pipe of an indoor heat exchanger;
102, monitoring the temperature of the coil pipe, and judging whether the temperature of the coil pipe reaches a first preset temperature; if yes, go to step 103;
step 103, controlling the rotating speed to run for a preset time when the temperature of the inner fan holding coil reaches a first preset temperature, and controlling the frequency to run for a preset time when the temperature of the compressor holding coil reaches the first preset temperature.
According to the dehumidification control method of the air conditioner, in the strong dehumidification mode, the temperature of the coil pipe of the indoor heat exchanger can be reduced to the first preset temperature by controlling the rotating speed of the inner fan and the frequency of the compressor, and at the moment, the absolute moisture content of air near the coil pipe is low, so that the dehumidification capacity can be obviously improved. When the temperature of the coil pipe is monitored to be reduced to the first preset temperature, the current frequency of the compressor is controlled to be unchanged, the current rotating speed of the inner fan is controlled to be unchanged, the inner fan is continuously operated for a period of time, the temperature of the coil pipe is kept at the first preset temperature, and powerful dehumidification is performed.
The value range of the preset time can be specifically set according to the change condition of the coil temperature, in a specific embodiment, a person skilled in the art can obtain the change rule of the coil temperature according to the experimental value, so that the preset time is set, the condition that the coil temperature cannot fall too fast due to strong dehumidification in the preset time is ensured, the strong dehumidification effect is ensured, and the stable operation of the system is ensured.
Example two
Fig. 2 is a second flow chart of a dehumidification control method of an air conditioner according to an embodiment of the invention. As shown in fig. 2, the dehumidification control method includes:
step 201, in a strong dehumidification mode, controlling the rotating speed of an inner fan and the frequency of a compressor to cool the temperature of a coil pipe of an indoor heat exchanger;
step 202, monitoring the temperature of the coil pipe, and judging whether the temperature of the coil pipe reaches a first preset temperature; if yes, go to step 203; if not, go to step 204;
step 203, controlling the rotating speed to run for a preset time when the temperature of the inner fan holding coil reaches a first preset temperature, and controlling the frequency to run for a preset time when the temperature of the compressor holding coil reaches the first preset temperature;
step 204, judging whether the frequency of the compressor reaches the upper frequency limit value; if yes, go to step 205, if no, return to step 202;
and 205, controlling the operation preset time of the upper limit value of the maintenance frequency of the compressor and the operation preset time of the rotating speed when the maintenance frequency of the inner fan reaches the upper limit value of the frequency.
In this embodiment, the coil temperature is reduced by controlling the frequency of the compressor and the rotational speed of the fan, and when the coil temperature is monitored to be reduced to the first preset temperature, the frequency operation preset time when the coil temperature is maintained by the compressor to reach the first preset temperature is controlled, and the rotational speed operation preset time when the coil temperature is maintained by the inner fan to reach the first preset temperature is controlled to perform efficient dehumidification. If the temperature of the coil pipe is not monitored to be reduced to the first preset temperature, judging whether the frequency of the compressor is increased to the frequency upper limit value, if so, controlling the compressor to continue to run for preset time by the frequency upper limit value, and controlling the inner fan to keep rotating speed when the frequency reaches the frequency upper limit value to continue to run for preset time, so as to perform powerful dehumidification; if the judgment result is negative, returning to the step 202 to monitor the temperature of the coil again, judging whether the temperature of the coil reaches the first preset temperature or not, thereby forming circulation control, ensuring stable operation of the system and ensuring the powerful dehumidification effect.
Example III
In an embodiment, further, the value range of the first preset temperature is greater than or equal to 0 ℃ and less than or equal to 5 ℃.
In this embodiment, the value range of the first preset temperature is greater than or equal to 0 ℃ and less than or equal to 5 ℃, but is not limited thereto. In the powerful dehumidification mode, the temperature of the coil pipe can be controlled between 0 ℃ and 5 ℃ by controlling the rotating speed of the inner fan and the frequency of the compressor, so that the temperature of air near the coil pipe is controlled between 0 ℃ and 5 ℃. Taking the common 27/24 national standard condensation working condition as an example, the relative humidity of ambient air is 72%, the absolute moisture content is 17.593g/Kg, the indoor coil temperature is generally reduced to be near the dew point 22 ℃ in the conventional dehumidification mode, the absolute moisture content is 12.916g/Kg, only 4.677g/Kg can be removed, and in the powerful dehumidification mode of the embodiment, the air near the coil temperature can be close to 0 ℃, the absolute moisture content of the air is only 2.936g/Kg, the dehumidification is 14.6g/Kg, and the dehumidification capacity is greatly improved. Meanwhile, after the strong dehumidification is performed, as the coil pipe can be gradually frosted, according to the research of related documents, frost crystals which are independently dispersed at the initial stage of frosting are similar to fins, so that the effect of enhancing heat transfer can be achieved, and the dehumidification efficiency is improved. Therefore, the closer the first preset temperature is to 0 ℃, the better the dehumidifying effect.
Further, the value range of the first preset temperature is greater than or equal to 0 ℃ and less than or equal to 1 ℃.
Specifically, the first preset temperature may be 0 ℃, 0.5 ℃, 1 ℃.
Further, the value range of the first preset temperature is greater than or equal to 0 ℃ and less than or equal to 2 ℃.
Specifically, the first preset temperature may be 0 ℃, 0.5 ℃, 1 ℃, 1.5 ℃, 2 ℃, etc.
Example IV
In any of the above embodiments, further, the step of controlling the rotation speed of the inner fan and the frequency of the compressor to make the indoor heat exchanger coil temperature reach the first preset temperature includes: the inner fan is controlled to run at a first preset rotating speed, and the compressor is controlled to run at a first preset regular ascending frequency, so that the temperature of the coil reaches a first preset temperature.
In this embodiment, by controlling the inner fan to operate at the first preset rotational speed and controlling the compressor to operate at the first preset regular frequency, on one hand, the temperature of the coil pipe can be quickly and steadily reduced to the first preset temperature, and on the other hand, after the temperature of the coil pipe is reduced to the first preset temperature, the inner fan still keeps operating at the first preset rotational speed, so that sufficient circulating air volume can be ensured to pass through the indoor heat exchanger coil pipe, and the dehumidification efficiency is improved.
In another embodiment of the invention, the inner blower is controlled to operate at a mid-wind speed and the compressor is controlled to operate at a higher frequency to increase the rate at which the coil temperature drops to a first preset temperature, the higher frequency range including 70HZ to 100HZ, specifically, 70HZ, 80HZ, 90HZ, 100HZ, etc. may be set.
In another embodiment of the invention, the inner fan is controlled to operate at a lower wind speed, such as a mute gear, or a lower than mute gear (the lowest wind speed achievable by the inner fan), while the compressor is controlled to operate at an up-conversion or directly at a higher frequency to bring the coil temperature down to a first preset temperature. Further, after the temperature of the coil reaches the first preset temperature, the rotating speed of the inner fan is controlled to rise to the first preset rotating speed.
In another embodiment of the present invention, the inner fan is controlled to operate at a certain regular, e.g. constant speed for a period of time, and then the inner fan is controlled to perform variable frequency operation, while the frequency of the compressor is controlled so that the coil temperature reaches a first preset temperature.
Further, the gear of the inner fan includes a low windshield, a medium windshield and a high windshield, and typically, the rotational speed of the medium windshield is 70% of the rotational speed of the high windshield, and the first preset rotational speed may be any rotational speed of one or more rotational speeds corresponding to the medium windshield.
Example five
In a third embodiment, further, as shown in fig. 3, the step of controlling the compressor to operate at the first preset regular frequency increase includes:
step 301, controlling a compressor to perform frequency raising at a first preset frequency raising speed;
step 302, judging whether the temperature of the coil reaches a second preset temperature; if yes, go to step 203;
step 303, reducing the frequency raising speed of the compressor to a second preset frequency raising speed.
Wherein the second preset temperature is higher than the first preset temperature.
In this embodiment, the compressor is first controlled to perform frequency raising at a first preset frequency raising speed, and when the coil temperature reaches a second preset temperature, the frequency raising speed is slowed down, and frequency raising is continued at the second preset frequency raising speed until the coil temperature reaches the first preset temperature, so that the compressor stops frequency raising, the stability of the air conditioner can be ensured, and the powerful dehumidification effect can be improved.
Example five
Fig. 4 shows a fourth flow chart of a dehumidification control method of an air conditioner according to an embodiment of the present invention. As shown in fig. 4, the dehumidification control method includes:
step 401, under a strong dehumidification mode, controlling an inner fan to operate at a first preset rotating speed, and controlling a compressor to operate at a first preset regular ascending frequency;
Step 402, monitoring the coil temperature of the indoor heat exchanger, and judging whether the coil temperature reaches a first preset temperature; if yes, go to step 403; if not, go to step 404;
step 403, controlling the inner fan to keep a first preset rotating speed to run for a preset time, and controlling the compressor to keep the frequency of the coil pipe to run for the preset time when the temperature of the coil pipe reaches the first preset temperature;
step 404, judging whether the frequency of the compressor reaches the upper frequency limit value; if yes, go to step 405, if no, return to step 402;
step 405, controlling the operation preset time of the upper limit value of the maintenance frequency of the compressor and the operation preset time of the inner fan at the first preset rotating speed;
and 406, continuously monitoring the temperature of the coil, and adjusting the rotating speed of the inner fan and the frequency of the compressor according to the temperature of the coil.
In this embodiment, after the air conditioner is turned on in the efficient dehumidification mode, the inner fan is controlled to operate at a first preset rotational speed, and the compressor is controlled to perform frequency boosting according to a first preset rule until the temperature of the indoor heat exchanger coil is reduced to a first preset temperature (for example, 0 ℃), the compressor stops frequency boosting, or the frequency of the compressor has reached a frequency upper limit value. The high-efficiency dehumidification is realized by controlling the rotation speed of the inner fan to be unchanged and controlling the compressor to continuously run at the frequency (or the upper frequency limit value) when the temperature of the coil pipe is equal to the first preset temperature. In the strong dehumidification process, the rotating speed of the inner fan and the frequency of the compressor are timely adjusted according to the temperature and the change speed of the coil pipe in real time, so that the coil pipe of the indoor unit can be effectively prevented from being frozen.
The method comprises the steps of controlling a compressor to perform frequency raising according to a first preset rule, specifically, controlling the compressor to perform frequency raising according to a first preset frequency raising speed, slowing down the frequency raising speed when the temperature of a coil reaches a second preset temperature, continuing frequency raising according to the second preset frequency raising speed until the temperature of the coil reaches the first preset temperature, and stopping frequency raising of the compressor.
Example six
In a fifth embodiment, as shown in fig. 5, the step of adjusting the rotation speed of the inner fan and the frequency of the compressor according to the coil temperature specifically includes:
step 501, judging whether the coil temperature reaches a third preset temperature or whether the falling speed of the coil temperature is greater than or equal to a preset falling speed; if yes, go to step 502;
step 502, increasing the rotation speed of the inner fan to a second preset rotation speed, and controlling the compressor to run in a frequency-reducing mode according to a second preset rule;
step 503, judging whether the temperature of the coil pipe reaches a fourth preset temperature; if yes, go to step 504;
at step 504, the compressor stops down-conversion.
Wherein the third preset temperature is lower than the first preset temperature; the fourth preset temperature is higher than the first preset temperature.
Further, the third preset temperature may have a value ranging from [ -3 ℃, -5 ℃ ], specifically, the third preset temperature may be-3 ℃, -4 ℃ or-5 ℃. The value range of the fourth preset temperature is [7 ℃,9 ℃), and specifically, the third preset temperature can be 7 ℃, 8 ℃ or 9 ℃.
In this embodiment, during the efficient dehumidification, the coil is considered to be at risk of freezing if the coil temperature drops rapidly, e.g., if the rate of drop of the coil temperature is greater than or equal to a preset drop rate, or if the coil temperature has fallen below a third preset temperature (e.g., -5 ℃). The rotating speed of the inner fan is increased to a second preset rotating speed (such as the rotating speed corresponding to the highest windshield), and the frequency of the compressor is gradually reduced according to a second preset rule, so that the temperature of the coil is gradually increased until the temperature of the coil is increased to a fourth preset temperature, the compressor stops reducing the frequency, and the coil freezing possibly caused in a powerful dehumidification mode can be effectively prevented.
Example seven
In a sixth embodiment, further, the step of controlling the compressor to perform the frequency-reducing operation according to a second preset rule includes: and controlling the compressor to perform frequency reduction at a first preset frequency reduction speed, wherein the first preset frequency reduction speed is greater than the second preset frequency increase speed.
In this embodiment, in the process of adjusting the rotation speed of the inner fan and the frequency of the compressor according to the coil temperature, in order to ensure the dehumidification effect, the strong dehumidification should be recovered as much as possible, so in the process of controlling the frequency-reducing operation of the compressor, the frequency-reducing speed is not slowed down, and the frequency is reduced at the same frequency-reducing speed, so that the coil temperature is quickly increased to the fourth preset temperature, and the strong dehumidification is performed again under the condition that the coil is not frozen.
Example eight
Fig. 6 shows a flowchart of a dehumidification control method of an air conditioner according to an embodiment of the present invention. As shown in fig. 6, the dehumidification control method includes:
step 601, under a powerful dehumidification mode, controlling an inner fan to operate at a first preset rotating speed and controlling a compressor to operate at a first preset frequency for a first preset time period;
step 602, controlling a compressor to operate at an ascending frequency according to a first preset rule;
step 603, monitoring the coil temperature of the indoor heat exchanger, and judging whether the coil temperature reaches a first preset temperature; if yes, go to step 604, if not, go to step 605;
step 604, controlling the frequency operation preset time or the upper limit value operation preset time of the holding frequency when the temperature of the coil pipe of the compressor reaches the first preset temperature;
step 605, judging whether the frequency of the compressor reaches the upper frequency limit value; if yes, go to step 606, if no, return to step 603;606,
step 606, controlling the operation of the upper limit value of the frequency of the compressor;
step 607, continuously monitoring the temperature of the coil, and adjusting the rotating speed of the inner fan and the frequency of the compressor according to the temperature of the coil.
In this embodiment, after the air conditioner is turned on in the powerful dehumidification mode, the inner fan is controlled to operate at a first preset rotational speed to ensure that sufficient circulating air volume passes through the indoor coil, and the compressor is controlled to operate at a first preset frequency for a second preset period of time to enable various operation parameters of the air conditioner to be basically stable, at this time, the operation frequency of the compressor is gradually increased according to the first preset rule until the temperature of the coil reaches the first preset temperature, the compressor stops to increase the frequency, and the frequency of the compressor is defined as F0 at this time, or the frequency of the compressor has reached an upper limit frequency value. And then the compressor is enabled to keep the frequency F0 or the upper limit frequency value to stably operate, and powerful dehumidification is carried out. In the strong dehumidification process, if the coil temperature is too fast (namely, the falling speed is greater than or equal to the preset falling speed), or the coil temperature is too low (namely, the coil temperature is lower than the third preset temperature), the rotating speed of the inner fan is increased to a second preset rotating speed (such as the highest windshield), the compressor is controlled to gradually reduce the frequency of the compressor according to the second preset rule until the coil temperature is increased to the fourth preset temperature, the frequency reduction of the compressor is stopped, and the coil is effectively prevented from freezing. In the frequency-reducing operation process of the compressor, the frequency-reducing speed is reduced at a first preset frequency-reducing speed, the frequency-reducing speed is not required to be reduced, and the first preset frequency-reducing speed is larger than the second preset frequency-increasing speed, so that the temperature of the coil pipe can be increased to a fourth preset temperature as soon as possible, and powerful dehumidification can be recovered as soon as possible.
Example nine
In any of the foregoing embodiments, further, the control method further includes: and responding to a control instruction for exiting the powerful dehumidification mode, controlling the compressor to stop, increasing the rotating speed of the inner fan to a third preset rotating speed, and running for a third preset time period.
In the embodiment, when a control instruction for exiting the powerful dehumidification mode is received, rotation of the compressor is stopped, the rotation speed of the inner fan is increased to a third preset rotation speed and is operated for a third preset time period, and frost and moisture on the surface of the indoor coil are blown dry, so that the surface of the coil is prevented from mildewing.
The third preset rotating speed and the third preset time period are empirical values, and can be reasonably set by a person skilled in the art according to requirements.
Examples ten
In any of the foregoing embodiments, the control method further includes: responding to a dehumidification instruction, and acquiring indoor environment humidity; judging whether the indoor environment humidity is greater than or equal to a first humidity threshold; if yes, entering the powerful dehumidification mode; if not, entering a conventional dehumidification mode.
In this embodiment, when a dehumidification command is received, the indoor environment humidity is first acquired, and when the indoor environment humidity is greater than or equal to a first humidity threshold (an empirical value, typically 80%), the powerful dehumidification mode is operated, otherwise, dehumidification is performed in accordance with a conventional dehumidification mode (i.e., a conventional dehumidification mode) of the air conditioner.
For the air conditioner with the humidity sensor, the indoor environment humidity can be collected through the humidity sensor, for the air conditioner without the humidity sensor, the current indoor environment humidity can be obtained from a terminal (such as a mobile phone app) in a wireless transmission mode, and the indoor environment humidity can also be obtained from other equipment in an internet of things mode, so that the method is not particularly limited.
Example eleven
In any of the embodiments, further, in the efficient dehumidification mode, the control method further includes: judging whether the indoor environment humidity is less than or equal to a second humidity threshold value; if yes, exiting the powerful dehumidification mode, and operating in the conventional dehumidification mode.
Because the strong-effect dehumidification mode has strong dehumidification effect, the problem that the room humidity is lower after the strong-effect dehumidification is continuously used is likely to occur, and according to the dehumidification control method provided by the embodiment, the indoor environment humidity is compared with the preset second humidity threshold value, the second humidity threshold value (the experience value is generally 50%) is smaller than the first humidity threshold value, and when the indoor environment humidity is smaller than or equal to the second humidity threshold value, the strong-effect dehumidification mode can be automatically exited, and the dehumidification control method operates according to the conventional dehumidification mode, so that the problem that the room humidity is lower after the strong-effect dehumidification mode is continuously used is avoided.
Example twelve
In any of the foregoing embodiments, further, in the efficient dehumidification mode, the control method further includes: judging whether the difference between the temperature of the coil and the first preset temperature is in a preset temperature interval or not and the duration reaches a second preset duration; if yes, exiting the powerful dehumidification mode, and operating in the conventional dehumidification mode.
Because the strong dehumidification mode has strong dehumidification effect, the problem that the room humidity is lower after the strong dehumidification is continuously used is likely to occur, and according to the dehumidification control method provided by the embodiment, whether the strong dehumidification mode is automatically exited or not can be judged through the temperature of the coil, and when the difference value between the temperature of the coil and the first preset temperature is in a preset temperature interval and the duration reaches a second preset duration, the strong dehumidification mode is exited, and the conventional dehumidification mode is entered.
Specifically, the range of the preset temperature interval is greater than or equal to-3 ℃ and less than or equal to 3 ℃.
Example thirteen
In an eighth embodiment, further, during operation of the compressor at the first preset frequency, the control method further includes: acquiring indoor environment temperature; and determining whether to exit the powerful dehumidification mode according to the indoor environment temperature and the coil temperature.
Because the strong dehumidification mode has strong dehumidification effect, the problem that the room humidity is lower after the strong dehumidification mode is continuously used is likely to occur, and according to the dehumidification control method provided by the embodiment, whether the strong dehumidification mode is closed or not is judged according to the relation between the indoor environment temperature and the coil temperature in the running process of the compressor at the first preset frequency.
Specifically, the average value of the indoor environment temperature and the average value of the coil temperature are calculated, if the difference value of the two average values is smaller than the fifth preset temperature (the empirical value is 10 ℃ in general), the subsequent step of the powerful dehumidification mode is carried out, otherwise, the powerful dehumidification mode is closed and the operation is carried out according to the conventional dehumidification mode, so that the problem that the indoor humidity is lower possibly caused by continuously using the powerful dehumidification mode is solved.
Examples fourteen
Fig. 7 shows a seventh flowchart of a dehumidification control method of an air conditioner according to an embodiment of the present invention. As shown in fig. 7, the dehumidification control method includes:
step 701, responding to a dehumidification instruction, and acquiring indoor environment humidity;
step 702, judging whether the indoor environment humidity is greater than or equal to a first humidity threshold; if yes, go to step 703, if no, go to step 714;
Step 703, starting a powerful dehumidification mode, controlling the inner fan to operate at a first preset rotating speed, and controlling the compressor to operate at a first preset frequency for a first preset time period;
step 704, controlling the compressor to operate at a first preset regular up-conversion;
step 705, obtaining the coil temperature of the indoor heat exchanger, and judging whether the coil temperature reaches a first preset temperature; if yes, go to step 706; if not, go to step 707;
step 706, controlling the compressor to operate at a frequency for a preset time when the temperature of the coil reaches a first preset temperature;
step 707, whether the frequency of the compressor reaches the upper frequency limit value; if yes, go to step 708; if not, returning to step 705;
step 708, controlling the compressor to operate at the upper frequency limit value for a preset time;
step 709, judging whether the coil temperature reaches a third preset temperature or whether the falling speed of the coil temperature is greater than or equal to a preset falling speed; if yes, go to step 710;
step 710, increasing the rotation speed of the inner fan to a second preset rotation speed, and controlling the compressor to run in a frequency-reducing mode according to a second preset rule;
step 711, judging whether the coil temperature reaches a fourth preset temperature; if yes, go to step 712;
Step 712, stopping the frequency reduction of the compressor; returning to step 703 and executing step 713;
step 713, judging whether a control instruction for exiting the powerful dehumidification mode is received; if yes, go to step 714; if not, go to step 713;
step 713, controlling the compressor to stop, increasing the rotating speed of the inner fan to a third preset rotating speed, and running for a third preset time period;
step 714, determining whether the indoor environment humidity is less than or equal to a second humidity threshold; if yes, go to step 715;
step 715, operating in a conventional dehumidification mode.
Example fifteen
Fig. 8 shows an eighth flowchart of a dehumidification control method of an air conditioner according to an embodiment of the present invention. As shown in fig. 8, the dehumidification control method includes:
step 801, controlling an inner fan to operate according to a first preset rotating speed and controlling a compressor to operate according to a first preset frequency for a first preset time period in a powerful dehumidification mode;
step 802, judging whether the difference between the indoor average ring temperature and the indoor average coil temperature is smaller than a fifth preset temperature; if yes, go to step 803, if no, go to step 811.
Step 803, the compressor increases the frequency according to a first preset rule;
step 804, judging whether the temperature of the coil pipe of the indoor unit reaches 0 ℃ or whether the frequency of the compressor reaches the upper limit frequency; if yes, go to step 805, if not, go to step 803;
Step 805, the compressor is operated at a frequency at which the indoor coil temperature is maintained at 0 ℃, or at an upper compressor limit frequency;
step 806, judging whether the indoor coil temperature meets the first judgment condition or reaches a third preset temperature; if yes, go to step 807, if not, go to step 805;
step 807, adjusting the rotating speed of the inner fan to the highest windshield, reducing the frequency of the compressor according to a second preset rule until the temperature of the coil reaches a fourth preset temperature, and stopping reducing the frequency of the compressor; returning to step 801 and executing step 808;
step 808, judging whether a control instruction for exiting the powerful dehumidification mode is received; if yes, go to step 809; if not, go to step 810;
step 809, controlling the compressor to stop, increasing the rotation speed of the inner fan to a third preset rotation speed, and running for a third preset time period;
step 810, judging whether the difference between the coil temperature and the first preset temperature is in a preset temperature range, and the duration reaches a second preset duration; if yes, go to step 811;
step 811, operating in a conventional dehumidification mode.
The dehumidification control method of the present invention will be described in detail with reference to embodiment fourteen and embodiment fifteen.
When a user has a dehumidification requirement, acquiring indoor environment humidity, and determining whether to operate the powerful dehumidification mode or the conventional dehumidification mode according to the magnitude relation between the indoor environment humidity and the first humidity threshold. In the powerful dehumidification mode, the rotating speed of the inner fan is controlled to be a first preset rotating speed (the middle wind gear is operated, and the rotating speed is generally 70% of the highest wind gear rotating speed), so that sufficient circulating air quantity is ensured to pass through the indoor heat exchanger coil, and the compressor is controlled to be operated at a first preset frequency (generally middle and low frequencies) for a first preset time period (generally 10-30 minutes) so that various operation parameters of the air conditioner are basically stable. At this time, the operation frequency of the compressor is gradually increased according to a first preset rule, the compressor increases the frequency at a speed of 1Hz for two minutes, and when the temperature of the indoor coil reaches a second preset temperature (2 ℃), the frequency increasing speed is slowed down to be 1Hz for five minutes until the temperature of the coil is reduced to 0 ℃, and the compressor stops increasing the frequency. Defining that the compressor frequency is F0 at this time or the compressor frequency has reached an upper limit frequency value, and then enabling the compressor to keep stable operation at this frequency for powerful dehumidification.
In the strong dehumidification mode, if the coil temperature is rapidly reduced (the first judgment condition is that the temperature is reduced by more than 3 ℃ in 1 minute) or the indoor coil temperature is already lower than a third preset temperature (generally minus 5 ℃), the rotating speed of the inner fan is increased to a second preset rotating speed (generally the highest wind level), the control unit gradually reduces the operating frequency of the compressor to the temperature of the coil to be higher than a fourth preset temperature (generally 8 ℃) according to the second preset rule, and in the frequency reduction process, the frequency is reduced at the speed of 1Hz for two minutes, so that dehumidification is recovered as much as possible to ensure the dehumidification effect, and the frequency reduction speed is not reduced. After the coil temperature is equal to or higher than 8 ℃, the compressor stops down-conversion. After which step 605 is returned.
And when the user selects to exit the powerful dehumidification mode, stopping the outdoor compressor, and adjusting the rotating speed of the indoor fan to the highest wind level to run for a second preset time to dry frost and water on the surface of the indoor coil, so as to prevent the surface of the coil from mildewing.
Because the strong dehumidification effect of the strong dehumidification mode is strong, the problem that the humidity of a room is lower after the strong dehumidification mode is continuously used is likely to occur, and the following control method can be expanded to solve the problem:
for an air conditioner with a humidity sensor, control can be performed as follows:
1. Firstly, measuring indoor environment humidity, entering a powerful dehumidification function according to an optimal embodiment if the indoor environment relative humidity is larger than a first preset humidity threshold (generally 80%), and operating according to a dehumidification mode of a conventional air conditioner if the indoor environment relative humidity is smaller than a certain threshold (generally 80%) when a user selects the dehumidification function;
2. aiming at the operation process of entering the strong dehumidification mode, when the relative humidity of the indoor environment is lower than a second preset humidity threshold value (generally 50%), the strong dehumidification mode can be automatically exited, and the operation is performed according to the dehumidification mode of the conventional air conditioner.
For an air conditioner without a humidity sensor, control can be performed as follows:
1. after entering the strong efficiency mode, when the compressor runs at the preset middle and low frequency, calculating the indoor average ring temperature T ring and the indoor average coil temperature T disc, if the difference delta T between the two temperatures is smaller than the fourth preset temperature (generally 10 ℃), entering the strong efficiency dehumidification subsequent step, otherwise, running according to the dehumidification mode of the conventional air conditioner;
2. in the running process of the strong dehumidification mode, when the temperature of the indoor coil pipe reaches the range of 0+/-3 ℃ and continuously reaches the second preset time (generally 1 hour), the strong dehumidification mode is exited, and the normal air conditioner is started to run in the dehumidification mode.
Examples sixteen
The present embodiment provides a dehumidification control device of an air conditioner, which includes one or more processors and a non-transitory computer-readable storage medium storing program instructions, the one or more processors being configured to implement the method of any one of the above embodiments when the one or more processors execute the program instructions.
Example seventeen
The present embodiment provides an air conditioner employing the method of any one of the above embodiments, or a dehumidification control device including the above embodiments, or a non-transitory computer-readable storage medium having the above embodiments.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.

Claims (13)

1. A dehumidification control method of an air conditioner, wherein the air conditioner is provided with a powerful dehumidification mode, the dehumidification control method comprising:
in the strong dehumidification mode, the rotating speed of the inner fan and the frequency of the compressor are controlled, so that the temperature of the indoor heat exchanger coil is reduced;
monitoring the temperature of the coil pipe, and judging whether the temperature of the coil pipe reaches a first preset temperature;
if yes, controlling the inner fan to keep rotating speed operation preset time when the temperature of the coil reaches a first preset temperature, and controlling the compressor to keep frequency operation preset time when the temperature of the coil reaches the first preset temperature;
when the coil temperature is judged to not reach the first preset temperature, judging whether the frequency of the compressor reaches a frequency upper limit value or not; if so, controlling the compressor to keep the frequency upper limit value for a preset operation time and controlling the inner fan to keep the frequency to reach the frequency upper limit value for a preset rotation speed operation time;
if not, re-monitoring the temperature of the coil pipe, and judging whether the temperature of the coil pipe reaches the first preset temperature;
the value range of the first preset temperature is more than or equal to 0 ℃ and less than or equal to 1 ℃;
The step of controlling the rotation speed of the inner fan and the frequency of the compressor comprises the following steps:
controlling the inner fan to run at a first preset rotating speed, and controlling the compressor to run at a first preset regular ascending frequency; the first preset rotating speed is any rotating speed of one or more rotating speeds corresponding to the stroke gear;
the step of controlling the compressor to operate at the first preset regular up-conversion comprises the following steps:
controlling the compressor to perform frequency raising at a first preset frequency raising speed;
judging whether the temperature of the coil pipe reaches a second preset temperature or not;
if so, reducing the frequency raising speed of the compressor to a second preset frequency raising speed;
wherein the second preset temperature is higher than the first preset temperature.
2. The dehumidification control method of claim 1, wherein after the inner blower is operated at the rotational speed when the coil temperature reaches a first preset temperature for the preset time and the compressor is operated at the frequency when the coil temperature reaches the first preset temperature for the preset time, the dehumidification control method further comprises:
continuing to monitor the coil temperature;
and adjusting the rotating speed of the inner fan and the frequency of the compressor according to the temperature of the coil pipe.
3. The dehumidification control method according to claim 2, wherein the step of adjusting the rotation speed of the inner fan and the frequency of the compressor according to the coil temperature comprises:
judging whether the temperature of the coil reaches a third preset temperature or whether the falling speed of the temperature of the coil is greater than or equal to a preset falling speed;
if yes, the rotating speed of the inner fan is increased to a second preset rotating speed, and the compressor is controlled to run in a frequency-reducing mode according to a second preset rule until the temperature of the coil pipe is increased to a fourth preset temperature;
wherein the third preset temperature is lower than the first preset temperature, and the fourth preset temperature is higher than the first preset temperature.
4. A dehumidification control method according to claim 3, wherein the step of controlling the compressor to be operated at a second preset law, down-conversion, comprises:
and controlling the compressor to perform frequency reduction at a first preset frequency reduction speed, wherein the first preset frequency reduction speed is greater than a second preset frequency increase speed.
5. The dehumidification control method according to claim 1, wherein before the step of controlling the inner blower to operate at a first preset rotational speed and controlling the compressor to operate at a first preset regular boost, the control method further comprises:
And controlling the inner fan to operate at the first preset rotating speed and controlling the compressor to operate at the first preset frequency for a first preset time period.
6. The dehumidification control method according to claim 1, characterized by further comprising:
and responding to a control instruction for exiting the powerful dehumidification mode, controlling the compressor to stop, increasing the rotating speed of the inner fan to a third preset rotating speed, and running for a third preset time period.
7. The dehumidification control method according to any one of claims 1 to 6, wherein the air conditioner is provided with a normal dehumidification mode, the dehumidification control method further comprising:
responding to a dehumidification instruction, and acquiring indoor environment humidity;
judging whether the indoor environment humidity is greater than or equal to a first humidity threshold;
if yes, entering the powerful dehumidification mode;
if not, entering a conventional dehumidification mode.
8. The dehumidification control method of claim 7, wherein in the high efficiency dehumidification mode, the control method further comprises:
judging whether the indoor environment humidity is smaller than or equal to a second humidity threshold value;
if yes, the strong dehumidification mode is exited, and the operation is performed according to the conventional dehumidification mode.
9. The dehumidification control method according to any one of claims 1 to 6, characterized in that in the powerful dehumidification mode, the dehumidification control method further comprises:
judging whether the difference value between the coil temperature and the first preset temperature is in a preset temperature interval or not and the duration reaches a second preset duration;
if yes, the strong dehumidification mode is exited, and the operation is performed according to the conventional dehumidification mode.
10. The dehumidification control method of claim 5, wherein during operation of the compressor at the first preset frequency, the dehumidification control method further comprises:
acquiring indoor environment temperature;
and determining whether to exit the powerful dehumidification mode according to the indoor environment temperature and the coil temperature.
11. The dehumidification control method of claim 10, wherein the step of determining whether to exit the efficient dehumidification mode based on the indoor ambient temperature and the coil temperature comprises:
calculating a difference between an average temperature of the indoor ambient temperature and an average temperature of the coil temperature;
judging whether the difference is smaller than a fifth preset temperature or not;
if yes, controlling the compressor to operate at a first preset regular ascending frequency after the compressor operates at a first preset frequency for a first preset time period;
If not, exiting the powerful dehumidification mode, and operating in a conventional dehumidification mode.
12. A dehumidification control device of an air conditioner comprising one or more processors and a non-transitory computer readable storage medium storing program instructions, the one or more processors being configured to implement the method of any one of claims 1-11 when the one or more processors execute the program instructions.
13. An air conditioner employing the method of any one of claims 1 to 11, or comprising the dehumidification control device of claim 12.
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