CN117404751A - Dehumidification control method and device, air conditioning system and storage medium - Google Patents

Dehumidification control method and device, air conditioning system and storage medium Download PDF

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Publication number
CN117404751A
CN117404751A CN202210795158.7A CN202210795158A CN117404751A CN 117404751 A CN117404751 A CN 117404751A CN 202210795158 A CN202210795158 A CN 202210795158A CN 117404751 A CN117404751 A CN 117404751A
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CN
China
Prior art keywords
dehumidification
expansion valve
electronic expansion
humidity
temperature
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210795158.7A
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Chinese (zh)
Inventor
崔国栋
王海胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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Publication date
Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd, Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN202210795158.7A priority Critical patent/CN117404751A/en
Publication of CN117404751A publication Critical patent/CN117404751A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • 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

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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)
  • Air Conditioning Control Device (AREA)

Abstract

The application relates to the technical field of air conditioners and discloses a dehumidification control method. The method is applied to an air conditioning system, and the air conditioning system comprises an indoor heat exchanger, a first electronic expansion valve and a second electronic expansion valve; under a refrigeration working condition, the air conditioning system sequentially flows through a first electronic expansion valve, an indoor heat exchanger and a second electronic expansion valve; the method comprises the steps of acquiring temperature detection information of an indoor heat exchanger and indoor humidity detection information in a dehumidification mode; adjusting the opening of the first electronic expansion valve according to the temperature detection information; and adjusting the opening of the second electronic expansion valve according to the humidity detection information so as to enable the evaporation pressure of the indoor heat exchanger to meet the indoor humidity adjustment requirement. According to the method and the device, the opening degree of the first electronic expansion valve and the opening degree of the second electronic expansion valve are controlled, and further the quantitative control of the dehumidification function in the dehumidification mode is achieved, so that the adjustment precision of the air conditioning system to the environment humidity is improved. The application also discloses a dehumidification control device, an air conditioning system and a storage medium.

Description

Dehumidification control method and device, air conditioning system and storage medium
Technical Field
The present invention relates to the technical field of air conditioners, and for example, to a dehumidification control method and device, an air conditioning system, and a storage medium.
Background
In recent years, as the living standard of people is continuously improved, the requirement on the comfort level of indoor environment is higher. In order to improve the comfort of the indoor environment, an air conditioner is generally installed in a home to adjust the indoor environment temperature and indoor environment humidity.
Currently, most air conditioners have a dehumidifying mode. The existing dehumidification mode generally controls a refrigerating system of an air conditioner to keep a refrigerating operation, and controls a fan of an indoor unit of the air conditioner to operate at a low speed or stops the fan. Such a dehumidification mode does allow for a reduction in the humidity of the indoor environment.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
in some places with high requirements for environmental humidity, such as antique rooms, cherish animal and plant rooms, medical organ preservation rooms, high-precision instrument rooms, and the like, only the reduction of environmental humidity can be realized, and the dehumidification regulation requirements of the places cannot be met, so how to realize the quantitative control of dehumidification is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.
The embodiment of the disclosure provides a dehumidification control method and device, an air conditioning system and a storage medium, so as to realize the quantifiable control of the air conditioning system in a dehumidification mode and improve the adjustment precision of the air conditioning system to the environmental humidity.
In some embodiments, the dehumidification control method is applied to an air conditioning system comprising an indoor heat exchanger, a first electronic expansion valve and a second electronic expansion valve; under a refrigeration working condition, the air conditioning system sequentially flows through a first electronic expansion valve, an indoor heat exchanger and a second electronic expansion valve; the dehumidification control method comprises the following steps: in a dehumidification mode, acquiring temperature detection information of an indoor heat exchanger and indoor humidity detection information; adjusting the opening of the first electronic expansion valve according to the temperature detection information; and adjusting the opening of the second electronic expansion valve according to the humidity detection information so as to enable the evaporation pressure of the indoor heat exchanger to meet the indoor humidity adjustment requirement.
In some embodiments, the temperature detection information includes a first evaporation temperature and a second evaporation temperature of the indoor heat exchanger; adjusting the opening of the first electronic expansion valve according to the temperature detection information, including: calculating an evaporation temperature difference between the first evaporation temperature and the second evaporation temperature; determining a target adjustment mode of the opening of the first electronic expansion valve according to the evaporation temperature difference value; the first evaporating temperature is the detection temperature of the refrigerant discharge end of the indoor heat exchanger under the refrigerating working condition, and the second evaporating temperature is the detection temperature of the refrigerant inlet end of the indoor heat exchanger under the refrigerating working condition.
In some embodiments, determining a target adjustment mode of the opening degree of the first electronic expansion valve according to the evaporation temperature difference value includes: comparing the evaporation temperature difference with a reference temperature threshold; under the condition that the evaporation temperature difference value is larger than a reference temperature threshold value, determining a target regulation mode to increase the opening of the first electronic expansion valve; determining a target regulation mode to reduce the opening of the first electronic expansion valve under the condition that the evaporation temperature difference value is smaller than a reference temperature threshold value; and under the condition that the evaporation temperature difference value is equal to the reference temperature threshold value, determining the target regulation mode to keep the opening degree of the first electronic expansion valve unchanged.
In some embodiments, the humidity detection information includes indoor ambient humidity; adjusting the opening of the second electronic expansion valve according to the humidity detection information, including: calculating a humidity difference value between the indoor environment humidity and the set humidity of the dehumidification mode; determining the indoor dehumidification demand level according to the humidity difference value; and adjusting the opening degree of the second electronic expansion valve according to the dehumidification demand level.
In some embodiments, adjusting the opening of the second electronic expansion valve according to the dehumidification demand level includes: determining a target dehumidification gear corresponding to the dehumidification demand level; and determining the opening of the second electronic expansion valve as a target opening corresponding to the target dehumidification gear.
In some embodiments, the target opening degree corresponding to the target dehumidification gear is determined by: obtaining a dehumidification information base, wherein the dehumidification information base stores a plurality of dehumidification gears and temperature attenuation values corresponding to the dehumidification gears; determining a reference temperature attenuation value corresponding to the target dehumidification gear from a dehumidification information base; controlling the subtraction of the indoor environment temperature and the reference temperature attenuation value to obtain a temperature calculation parameter; and determining the target opening according to the temperature calculation parameter and the critical pressure value of the refrigerant at the saturation temperature.
In some embodiments, determining a dehumidification demand level of the room based on the humidity differential comprises: determining a dehumidification demand level as a first dehumidification level representing strong dehumidification in the case that the humidity difference value is greater than or equal to a first humidity threshold value; determining that the dehumidification demand level is a second dehumidification level representing conventional dehumidification in the case that the humidity difference is less than the first humidity threshold and greater than the second humidity threshold; determining that the dehumidification demand level is a third dehumidification level representing slow dehumidification in the event that the humidity difference is less than or equal to a second humidity threshold; wherein the first humidity threshold is greater than the second humidity threshold.
In some embodiments, the dehumidification control device includes a processor and a memory storing program instructions, wherein the processor, when executing the program instructions, performs the dehumidification control method described above.
In some embodiments, the air conditioning system comprises an indoor heat exchanger, a first electronic expansion valve, a second electronic expansion valve, and a dehumidification control device as described above; and under the refrigeration working condition, the refrigerant sequentially flows through the first electronic expansion valve, the indoor heat exchanger and the second electronic expansion valve.
In some embodiments, the storage medium stores program instructions that, when executed, perform a dehumidification control method as described above.
The dehumidification control method and device, the air conditioning system and the storage medium provided by the embodiment of the disclosure can realize the following technical effects:
under the dehumidification mode, the opening degrees of the first electronic expansion valve and the second electronic expansion valve of the air conditioning system are controlled based on temperature detection information and humidity detection information, so that the evaporating pressure of the indoor heat exchanger meets the indoor humidity regulation requirement, the quantized control of the dehumidification function under the dehumidification mode is realized, and the regulation precision of the air conditioning system to the environmental humidity is improved.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:
FIG. 1 is a partial schematic view of an air conditioning system provided in an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a dehumidification control method provided by an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of another dehumidification control method provided by an embodiment of the disclosure;
FIG. 4 is a schematic diagram of another dehumidification control method provided by an embodiment of the disclosure;
FIG. 5 is a schematic diagram of another dehumidification control method provided by an embodiment of the disclosure;
FIG. 6 is a schematic diagram of another dehumidification control method provided by an embodiment of the disclosure;
fig. 7 is a schematic diagram of a dehumidification control device provided in an embodiment of the disclosure.
Reference numerals:
100. a processor; 101. a memory; 102. a communication interface; 103. a bus; 210. a first electronic expansion valve; 220. an indoor heat exchanger; 221. a first temperature sensor; 222. a second temperature sensor; 230. a first electronic expansion valve.
Detailed Description
So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.
The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The term "plurality" means two or more, unless otherwise indicated.
In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.
The term "corresponding" may refer to an association or binding relationship, and the correspondence between a and B refers to an association or binding relationship between a and B.
In the embodiment of the disclosure, the intelligent home appliance refers to a home appliance formed after a microprocessor, a sensor technology and a network communication technology are introduced into the home appliance, and has the characteristics of intelligent control, intelligent sensing and intelligent application, the operation process of the intelligent home appliance often depends on the application and processing of modern technologies such as the internet of things, the internet and an electronic chip, for example, the intelligent home appliance can realize remote control and management of a user on the intelligent home appliance by connecting the electronic appliance.
In the embodiment of the disclosure, the terminal device refers to an electronic device with a wireless connection function, and the terminal device can be in communication connection with the intelligent household electrical appliance through connecting with the internet, and can also be in communication connection with the intelligent household electrical appliance through Bluetooth, wifi and other modes. In some embodiments, the terminal device is, for example, a mobile device, a computer, or an in-vehicle device built into a hover vehicle, etc., or any combination thereof. The mobile device may include, for example, a cell phone, smart home device, wearable device, smart mobile device, virtual reality device, etc., or any combination thereof, wherein the wearable device includes, for example: smart watches, smart bracelets, pedometers, etc.
The embodiment of the disclosure provides an air conditioning system, which comprises a first electronic expansion valve, an indoor heat exchanger and a second electronic expansion valve. As shown in the partial schematic view of the air conditioning system in connection with fig. 1, the first electronic expansion valve 210, the indoor heat exchanger 220, and the second electronic expansion valve 230 are sequentially disposed in the refrigerant flow path. The air conditioning system is operated under a cooling condition, and the refrigerant sequentially flows through the first electronic expansion valve 210, the indoor heat exchanger 220, and the second electronic expansion valve 230.
Generally, an air conditioning system includes only one electronic expansion valve connected to one end of an indoor heat exchanger, and is used to throttle a refrigerant flow path of the entire air conditioning system. In this embodiment, a second electronic expansion valve 230 is added at the other end of the indoor heat exchanger 220, so as to precisely control the dehumidification amount of the air conditioning system in the dehumidification mode by a specific control mode of the opening degrees of the two electronic expansion valves.
Optionally, as shown in fig. 1, the air conditioning system may also be configured with a first temperature sensor 221 and a second temperature sensor 222. Wherein, the first temperature sensor 221 is used for detecting temperature data of a first end of the indoor heat exchanger 220, and the second temperature sensor 222 is used for detecting temperature data of a second end of the indoor heat exchanger 220. Here, the first end and the second end of the indoor heat exchanger 220 specifically refer to the refrigerant discharge end of the indoor heat exchanger 220 as the first end and the refrigerant inlet end of the indoor heat exchanger 220 as the second end when the air conditioning system is in the cooling condition.
Thus, the detected temperature of the refrigerant discharge end of the indoor heat exchanger 220 under the cooling condition can be obtained by acquiring the temperature data detected by the first temperature sensor 221; the detected temperature of the refrigerant inlet end of the indoor heat exchanger 220 under the cooling condition can be obtained by acquiring the temperature data detected by the second temperature sensor 222.
Based on the air conditioning system, an embodiment of the disclosure provides a dehumidification control method applied to the air conditioning system. The dehumidification control method comprises the following steps: in the dehumidification mode, temperature detection information of the indoor heat exchanger 220 and indoor humidity detection information are acquired; adjusting the opening degree of the first electronic expansion valve 210 according to the temperature detection information; the opening degree of the second electronic expansion valve 230 is adjusted according to the humidity detection information so that the evaporation pressure of the indoor heat exchanger 220 meets the indoor humidity adjustment requirement.
Alternatively, the execution body that executes the above steps may be a control module of the air conditioning system. Specifically, the control module of the air conditioning system acquires temperature detection information of the indoor heat exchanger 220 and humidity detection information of the room in the dehumidification mode; the control module adjusts the opening of the first electronic expansion valve 210 according to the temperature detection information; the control module adjusts the opening of the second electronic expansion valve 230 according to the humidity detection information, so that the evaporation pressure of the indoor heat exchanger 220 meets the indoor humidity adjustment requirement. Therefore, the quantitative control of the dehumidification function in the dehumidification mode is realized, and the adjustment precision of the air conditioning system to the environment humidity is improved.
Referring to fig. 2, an embodiment of the disclosure provides a dehumidification control method, including:
and S01, acquiring temperature detection information of the indoor heat exchanger and indoor humidity detection information in a dehumidification mode.
And S02, adjusting the opening degree of the first electronic expansion valve according to the temperature detection information.
S03, adjusting the opening of the second electronic expansion valve according to the humidity detection information so that the evaporating pressure of the indoor heat exchanger meets the indoor humidity adjustment requirement.
By adopting the dehumidification control method provided by the embodiment of the disclosure, the opening degrees of the first electronic expansion valve and the second electronic expansion valve of the air conditioning system are controlled based on the temperature detection information and the humidity detection information in the dehumidification mode, so that the evaporation pressure of the indoor heat exchanger meets the indoor humidity regulation requirement, the quantifiable control of the dehumidification function in the dehumidification mode is realized, and the regulation precision of the air conditioning system to the environmental humidity is improved.
Alternatively, the temperature detection information may include a first evaporation temperature and a second evaporation temperature of the indoor heat exchanger; the temperature detection information may also include temperature data calculated based on the first evaporation temperature and the second evaporation temperature. Here, the first evaporating temperature is a detected temperature of a refrigerant discharge end of the indoor heat exchanger under a refrigerating condition, and the second evaporating temperature is a detected temperature of a refrigerant inlet end of the indoor heat exchanger under the refrigerating condition. Therefore, the control module of the air conditioning system can obtain the detected temperature of the refrigerant discharge end of the indoor heat exchanger under the refrigeration working condition by acquiring the temperature data detected by the first temperature sensor. The control module of the air conditioning system can also obtain the detection temperature of the refrigerant inlet end of the indoor heat exchanger under the refrigeration working condition by acquiring the temperature data detected by the second temperature sensor.
Optionally, the temperature detection information includes a first evaporation temperature and a second evaporation temperature of the indoor heat exchanger; adjusting the opening of the first electronic expansion valve according to the temperature detection information, including: calculating an evaporation temperature difference between the first evaporation temperature and the second evaporation temperature; determining a target adjustment mode of the opening of the first electronic expansion valve according to the evaporation temperature difference value; the first evaporating temperature is the detection temperature of the refrigerant discharge end of the indoor heat exchanger under the refrigerating working condition, and the second evaporating temperature is the detection temperature of the refrigerant inlet end of the indoor heat exchanger under the refrigerating working condition.
Because the air conditioning system is in the dehumidification mode, the indoor heat exchanger is used as an evaporator for absorbing heat and refrigerating at the moment. Therefore, the refrigerant flows to the first end part through the second end part of the indoor heat exchanger, the main heat absorption is changed from liquid state to gas state in the process, and the temperature is also increased to a certain extent. In this embodiment, the first evaporating temperature detected at the first end is subtracted from the second evaporating temperature detected at the second end to obtain an evaporating temperature difference, where the evaporating temperature difference is a positive value.
As shown in conjunction with fig. 3, an embodiment of the present disclosure provides another dehumidification control method, including:
s11, acquiring a first evaporation temperature and a second evaporation temperature of the indoor heat exchanger.
S12, calculating an evaporation temperature difference value between the first evaporation temperature and the second evaporation temperature.
S13, determining a target adjustment mode of the opening degree of the first electronic expansion valve according to the evaporation temperature difference value.
By adopting the dehumidification control method provided by the embodiment of the disclosure, the opening degree of the first electronic expansion valve of the air conditioning system is controlled firstly based on the first evaporation temperature and the second evaporation temperature of the indoor heat exchanger in the dehumidification mode, so that the control of the second electronic expansion valve is controlled subsequently. The evaporation pressure of the indoor heat exchanger meets the indoor humidity regulation requirement by the combined action of the first electronic expansion valve and the second electronic expansion valve, so that the quantifiable control of the dehumidification function in a dehumidification mode is realized, and the regulation precision of the air conditioning system to the environmental humidity is improved; and the severe influence on the indoor environment temperature in the dehumidification process is avoided to a certain extent, and the accurate quantifiable dehumidification control of the air conditioning system in the acceptable fluctuation range of the indoor environment temperature is realized.
Optionally, determining the target adjustment mode of the opening degree of the first electronic expansion valve according to the evaporation temperature difference value includes: comparing the evaporation temperature difference with a reference temperature threshold; under the condition that the evaporation temperature difference value is larger than a reference temperature threshold value, determining a target regulation mode to increase the opening of the first electronic expansion valve; determining a target regulation mode to reduce the opening of the first electronic expansion valve under the condition that the evaporation temperature difference value is smaller than a reference temperature threshold value; and under the condition that the evaporation temperature difference value is equal to the reference temperature threshold value, determining the target regulation mode to keep the opening degree of the first electronic expansion valve unchanged.
The reference temperature threshold value can be set by the factory of the air conditioner or can be modified by user setting. For example, the reference temperature threshold may be selected in the range of 0.8 to 1.5. Specifically, the reference temperature threshold may be 1. Taking the temperature reference threshold value as 1 as an example, if the difference value of the evaporation temperatures of the first evaporation temperature and the second evaporation temperature is greater than 1, controlling the first electronic expansion valve to be opened by a certain step number; under the condition that the difference value of the evaporation temperature between the first evaporation temperature and the second evaporation temperature is smaller than 1, the first electronic expansion valve is controlled to be turned down by a certain step number; and controlling the opening degree of the first electronic expansion valve to be unchanged under the condition that the evaporation temperature difference between the first evaporation temperature and the second evaporation temperature is equal to 1.
Thus, the opening degree of the first electronic expansion valve is controlled according to the detected temperatures at the two ends of the indoor heat exchanger, so that the superheat degree of the indoor heat exchanger is controlled through the opening degree change of the first electronic expansion valve, the severe influence on the indoor environment temperature in the dehumidification process is avoided to a certain extent, and the accurate quantifiable dehumidification control of the air conditioning system in the acceptable fluctuation range of the indoor environment temperature is realized.
Optionally, the humidity detection information includes indoor environmental humidity; adjusting the opening of the second electronic expansion valve according to the humidity detection information, including: calculating a humidity difference value between the indoor environment humidity and the set humidity of the dehumidification mode; determining the indoor dehumidification demand level according to the humidity difference value; and adjusting the opening degree of the second electronic expansion valve according to the dehumidification demand level.
In the embodiment of the disclosure, the humidity demand level is determined jointly based on the actual humidity condition in the room and the set humidity value of the current dehumidification mode. It will be appreciated that the humidity demand level may be used to characterize the current demand conditions of the indoor environment for dehumidification regulation in terms of humidity.
Therefore, the evaporation pressure of the indoor heat exchanger is adjusted through the opening change of the second electronic expansion valve, the quantifiable control of the dehumidification function of the air conditioning system is further realized, and the adjustment precision of the air conditioning system to the environmental humidity is improved; and the severe influence on the indoor environment temperature in the dehumidification process is avoided to a certain extent, and the accurate quantifiable dehumidification control of the air conditioning system in the acceptable fluctuation range of the indoor environment temperature is realized.
As shown in conjunction with fig. 4, an embodiment of the present disclosure provides another dehumidification control method, including:
s21, calculating a humidity difference value between the indoor environment humidity and the set humidity of the dehumidification mode.
S22, determining the indoor dehumidification demand level according to the humidity difference value.
S23, adjusting the opening degree of the second electronic expansion valve according to the dehumidification demand level.
By adopting the dehumidification control method provided by the embodiment of the disclosure, the opening degree of the first electronic expansion valve of the air conditioning system is controlled according to the first evaporation temperature and the second evaporation temperature in a dehumidification mode; and then adjusting the opening of the second electronic expansion valve according to the humidity difference value between the indoor environment humidity and the set humidity of the dehumidification mode. The evaporation pressure of the indoor heat exchanger after adjustment accords with the indoor humidity adjustment requirement through the combined action of the first electronic expansion valve and the second electronic expansion valve, thereby realizing the quantifiable control of the dehumidification function in the dehumidification mode and improving the adjustment precision of the air conditioning system to the environmental humidity; and the severe influence on the indoor environment temperature in the dehumidification process is avoided to a certain extent, and the accurate quantifiable dehumidification control of the air conditioning system in the acceptable fluctuation range of the indoor environment temperature is realized.
Optionally, adjusting the opening of the second electronic expansion valve according to the dehumidification demand level includes: determining a target dehumidification gear corresponding to the dehumidification demand level; and determining the opening of the second electronic expansion valve as a target opening corresponding to the target dehumidification gear. In the embodiment of the present disclosure, the dehumidification demand level and the dehumidification gear of the air conditioning system may be in one-to-one correspondence. After the dehumidification demand level is determined, a target dehumidification gear corresponding to the determined dehumidification demand level can be obtained based on the corresponding relation between the dehumidification demand level and the dehumidification gear.
As shown in conjunction with fig. 5, an embodiment of the present disclosure provides another dehumidification control method, including:
s31, determining a target dehumidification gear corresponding to the dehumidification demand level.
S32, determining the opening of the second electronic expansion valve as a target opening corresponding to the target dehumidification gear.
In this way, the target opening corresponding to the dehumidification demand level can be determined to be the opening of the second electronic expansion valve through the dehumidification demand level; so that the air conditioning system controls the opening adjustment of the second electronic expansion valve based on the determined target opening. The evaporation pressure of the indoor heat exchanger is adjusted, the dehumidification function of the air conditioning system can be quantitatively controlled, and the adjustment precision of the air conditioning system to the environment humidity is improved; and the severe influence on the indoor environment temperature in the dehumidification process is avoided to a certain extent, and the accurate quantifiable dehumidification control of the air conditioning system in the acceptable fluctuation range of the indoor environment temperature is realized.
Optionally, the target opening corresponding to the target dehumidification gear is determined by: obtaining a dehumidification information base, wherein the dehumidification information base stores a plurality of dehumidification gears and temperature attenuation values corresponding to the dehumidification gears; determining a reference temperature attenuation value corresponding to the target dehumidification gear from a dehumidification information base; controlling the subtraction of the indoor environment temperature and the reference temperature attenuation value to obtain a temperature calculation parameter; and determining the target opening according to the temperature calculation parameter and the critical pressure value of the refrigerant at the saturation temperature.
As shown in connection with fig. 6, an embodiment of the present disclosure provides another dehumidification control method, including:
s41, obtaining a dehumidification information base, wherein a plurality of dehumidification gears and temperature attenuation values corresponding to the dehumidification gears are stored in the dehumidification information base.
S42, determining a reference temperature attenuation value corresponding to the target dehumidification gear from the dehumidification information base.
S43, subtracting the reference temperature attenuation value from the indoor environment temperature to obtain a temperature calculation parameter.
S44, determining the target opening according to the temperature calculation parameter and the critical pressure value of the refrigerant at the saturation temperature.
In this way, the target opening degree for controlling the opening degree adjustment of the second electronic expansion valve is determined based on the indoor environment temperature and the target dehumidification gear, and an information basis is provided for further realizing the adjustment of the evaporation pressure of the indoor heat exchanger. The dehumidification function realized based on the control mode can avoid severe influence on indoor environment temperature in the dehumidification process, and the accurate and quantifiable dehumidification control of the air conditioning system in the acceptable fluctuation range of the indoor environment temperature is realized.
Optionally, determining the indoor dehumidification demand level according to the humidity difference value includes: determining a dehumidification demand level as a first dehumidification level representing strong dehumidification in the case that the humidity difference value is greater than or equal to a first humidity threshold value; determining that the dehumidification demand level is a second dehumidification level representing conventional dehumidification in the case that the humidity difference is less than the first humidity threshold and greater than the second humidity threshold; determining that the dehumidification demand level is a third dehumidification level representing slow dehumidification in the event that the humidity difference is less than or equal to a second humidity threshold; wherein the first humidity threshold is greater than the second humidity threshold. In particular, the first humidity threshold may be twice the second humidity threshold. For example, in the case where the first humidity threshold is 30%, the second humidity threshold may be determined to be 15%.
In practical application, the greater the evaporating pressure of the indoor heat exchanger, the stronger the dehumidifying capacity of the corresponding air conditioning system. Therefore, after the opening control of the first electronic expansion valve is completed, the dehumidification force of the target dehumidification gear corresponding to the dehumidification demand level is determined based on the humidity difference value obtained by subtracting the indoor environment temperature from the reference temperature attenuation value. The method can realize the adjustment of the evaporation pressure of the indoor heat exchanger, further realize the quantifiable control of the dehumidification capacity of the dehumidification function of the air conditioning system, and improve the adjustment precision of the air conditioning system to the environmental humidity.
As shown in connection with fig. 7, an embodiment of the present disclosure provides a dehumidification control device including a processor (processor) 100 and a memory (memory) 101. Optionally, the apparatus may further comprise a communication interface (Communication Interface) 102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via the bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call logic instructions in the memory 101 to perform the dehumidification control method of the above-described embodiment.
Further, the logic instructions in the memory 101 described above may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand alone product.
The memory 101 is a computer readable storage medium that can be used to store a software program, a computer executable program, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes the functional application and the data processing by executing the program instructions/modules stored in the memory 101, i.e., implements the dehumidification control method in the above-described embodiment.
The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created according to the use of the terminal device, etc. Further, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure provides an air conditioning system, which comprises an indoor heat exchanger, a first electronic expansion valve, a second electronic expansion valve and the dehumidification control device; and under the refrigeration working condition, the refrigerant sequentially flows through the first electronic expansion valve, the indoor heat exchanger and the second electronic expansion valve.
By adopting the air conditioning system provided by the embodiment of the disclosure, the second electronic expansion valve is configured on the basis of the indoor heat exchanger and the first electronic expansion valve, and then in the dehumidification mode, the opening degrees of the first electronic expansion valve and the second electronic expansion valve of the air conditioning system are controlled through the temperature detection information and the humidity detection information, so that the evaporation pressure of the indoor heat exchanger meets the indoor humidity regulation requirement, the quantized control of the dehumidification function in the dehumidification mode is realized, and the regulation precision of the air conditioning system to the environmental humidity is improved. In addition, by executing the dehumidification control method, severe influence on indoor environment temperature in the dehumidification process is avoided to a certain extent, and accurate and quantifiable dehumidification control of the air conditioning system in an acceptable fluctuation range of the indoor environment temperature is realized.
Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions configured to perform the above dehumidification control method.
The disclosed embodiments provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the above-described dehumidification control method.
The computer readable storage medium may be a transitory computer readable storage medium or a non-transitory computer readable storage medium.
Embodiments of the present disclosure may be embodied in a software product stored on a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of a method according to embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium including: a plurality of media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or a transitory storage medium.
The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (the) are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, when used in this application, the terms "comprises," "comprising," and/or "includes," and variations thereof, mean that the stated features, integers, steps, operations, elements, and/or components are present, but that the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.
Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the embodiments disclosed herein, the disclosed methods, articles of manufacture (including but not limited to devices, apparatuses, etc.) may be practiced in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units may be merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form. The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to implement the present embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims (10)

1. The dehumidification control method is applied to an air conditioning system, and the air conditioning system comprises an indoor heat exchanger and a first electronic expansion valve; the air conditioning system is characterized by further comprising a second electronic expansion valve; the air conditioning system is characterized in that under a refrigeration working condition, a refrigerant sequentially flows through the first electronic expansion valve, the indoor heat exchanger and the second electronic expansion valve;
the dehumidification control method comprises the following steps:
in a dehumidification mode, acquiring temperature detection information of the indoor heat exchanger and indoor humidity detection information;
adjusting the opening of the first electronic expansion valve according to the temperature detection information;
and adjusting the opening of the second electronic expansion valve according to the humidity detection information so that the evaporation pressure of the indoor heat exchanger meets the indoor humidity adjustment requirement.
2. The dehumidification control method according to claim 1, wherein the temperature detection information includes a first evaporation temperature and a second evaporation temperature of the indoor heat exchanger;
the adjusting the opening of the first electronic expansion valve according to the temperature detection information comprises the following steps:
calculating an evaporation temperature difference between the first evaporation temperature and the second evaporation temperature;
determining a target adjustment mode of the opening of the first electronic expansion valve according to the evaporation temperature difference value;
the first evaporation temperature is the detection temperature of the refrigerant discharge end of the indoor heat exchanger under the refrigeration working condition, and the second evaporation temperature is the detection temperature of the refrigerant inlet end of the indoor heat exchanger under the refrigeration working condition.
3. The dehumidification control method according to claim 2, wherein the determining a target adjustment mode of the opening degree of the first electronic expansion valve according to the evaporation temperature difference value includes:
comparing the evaporation temperature difference with a reference temperature threshold;
determining that the target regulation mode is to increase the opening of the first electronic expansion valve under the condition that the evaporation temperature difference value is larger than the reference temperature threshold value;
determining that the target regulation mode is to reduce the opening of the first electronic expansion valve under the condition that the evaporation temperature difference value is smaller than the reference temperature threshold value;
and under the condition that the evaporation temperature difference value is equal to the reference temperature threshold value, determining the target adjusting mode to keep the opening degree of the first electronic expansion valve unchanged.
4. A dehumidification control method according to claim 1, 2 or 3, wherein the humidity detection information includes an indoor environment humidity;
the adjusting the opening of the second electronic expansion valve according to the humidity detection information includes:
calculating a humidity difference value between the indoor environment humidity and the set humidity of the dehumidification mode;
determining the indoor dehumidification demand level according to the humidity difference value;
and adjusting the opening degree of the second electronic expansion valve according to the dehumidification demand level.
5. The dehumidification control method according to claim 4, wherein the adjusting the opening degree of the second electronic expansion valve according to the dehumidification demand level comprises:
determining a target dehumidification gear corresponding to the dehumidification demand level;
and determining that the opening of the second electronic expansion valve is the target opening corresponding to the target dehumidification gear.
6. The dehumidification control method according to claim 5, wherein the target opening degree corresponding to the target dehumidification shift position is determined by:
obtaining a dehumidification information base, wherein a plurality of dehumidification gears and temperature attenuation values corresponding to the dehumidification gears are stored in the dehumidification information base;
determining a reference temperature attenuation value corresponding to the target dehumidification gear from the dehumidification information base;
controlling the indoor environment temperature to be subtracted from the reference temperature attenuation value to obtain a temperature calculation parameter;
and determining the target opening according to the temperature calculation parameter and the critical pressure value of the refrigerant at the saturation temperature.
7. The dehumidification control method of claim 4, wherein determining the dehumidification demand level of the room based on the humidity difference comprises:
determining the dehumidification demand level as a first dehumidification level representing intensive dehumidification in the case that the humidity difference value is greater than or equal to a first humidity threshold value;
determining the dehumidification demand level as a second dehumidification level representing regular dehumidification in the case that the humidity difference is less than the first humidity threshold and greater than a second humidity threshold;
determining that the dehumidification demand level is a third dehumidification level representing gentle dehumidification, if the humidity difference is less than or equal to the second humidity threshold;
wherein the first humidity threshold is greater than the second humidity threshold.
8. A dehumidification control device comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the dehumidification control method of any one of claims 1 to 7 when executing the program instructions.
9. An air conditioning system comprises an indoor heat exchanger and a first electronic expansion valve; characterized by further comprising a second electronic expansion valve and the dehumidification control device according to claim 8;
and under a refrigeration working condition of the air conditioning system, the refrigerant sequentially flows through the first electronic expansion valve, the indoor heat exchanger and the second electronic expansion valve.
10. A storage medium storing program instructions that, when executed, perform the dehumidification control method of any one of claims 1 to 7.
CN202210795158.7A 2022-07-07 2022-07-07 Dehumidification control method and device, air conditioning system and storage medium Pending CN117404751A (en)

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CN202210795158.7A CN117404751A (en) 2022-07-07 2022-07-07 Dehumidification control method and device, air conditioning system and storage medium

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