CN110701738A - Variable frequency air conditioner control method and device - Google Patents

Variable frequency air conditioner control method and device Download PDF

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Publication number
CN110701738A
CN110701738A CN201910777058.XA CN201910777058A CN110701738A CN 110701738 A CN110701738 A CN 110701738A CN 201910777058 A CN201910777058 A CN 201910777058A CN 110701738 A CN110701738 A CN 110701738A
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China
Prior art keywords
air conditioner
variable frequency
frequency
preset
controlling
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Granted
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CN201910777058.XA
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Chinese (zh)
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CN110701738B (en
Inventor
李延政
王美术
刘明
王录娥
王玉洁
牛巧宁
周鹏
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Zhengzhou Haier Air Conditioner Co Ltd
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Zhengzhou Haier Air Conditioner Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/83—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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • 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

Abstract

The invention provides a method and a device for controlling a variable frequency air conditioner, wherein the method comprises the following steps: controlling the variable frequency air conditioner to carry out frequency rising according to a preset frequency rising mode; before the frequency of the variable frequency air conditioner reaches the target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner, controlling the opening degree of an electronic expansion valve of the variable frequency air conditioner to be smaller than or equal to the preset opening degree and/or controlling the rotating speed of a fan in an indoor unit of the variable frequency air conditioner to be smaller than or equal to the preset rotating speed. According to the invention, the opening degree of the electronic expansion valve and the rotating speed of the fan are controlled in the frequency rising process of the variable frequency air conditioner, so that the oil return performance of the compressor is improved.

Description

Variable frequency air conditioner control method and device
Technical Field
The embodiment of the invention relates to the technical field of electric appliances, in particular to a method and a device for controlling a variable frequency air conditioner.
Background
The inverter air conditioner is a commonly used household appliance, and can perform cooling or heating according to the requirements of users.
In a low-temperature heating mode of the inverter air conditioner, if the external environment temperature is too low, the oil return of the compressor may be poor to affect lubrication, so that the compression performance of the compressor is reduced, and therefore, how to improve the oil return performance of the compressor is a problem to be solved urgently.
Disclosure of Invention
In order to solve the above problems in the prior art, in a first aspect, the present invention provides a method for controlling an inverter air conditioner, including: controlling the variable frequency air conditioner to carry out frequency rising according to a preset frequency rising mode; before the frequency of the variable frequency air conditioner reaches a target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner, controlling the opening degree of an electronic expansion valve of the variable frequency air conditioner to be smaller than or equal to a preset opening degree and/or controlling the rotating speed of a fan in an indoor unit of the variable frequency air conditioner to be smaller than or equal to a preset rotating speed.
According to the scheme, before the frequency of the variable frequency air conditioner reaches the target frequency, or within the preset time after the frequency rising starting moment of the variable frequency air conditioner, the opening degree of an electronic expansion valve of the variable frequency air conditioner is controlled to be smaller than or equal to the preset opening degree and/or the rotating speed of a fan in an indoor unit of the variable frequency air conditioner is controlled to be smaller than or equal to the preset rotating speed, the return air temperature of the compressor is improved, and therefore the oil return performance of the compressor is improved.
In one possible design, further comprising: before the frequency of the variable frequency air conditioner reaches a target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner, controlling the angle of a first stepping motor of the variable frequency air conditioner so as to enable the vertical pendulum air volume to be smaller than or equal to a first preset air volume, and/or controlling the angle of a second stepping motor of the variable frequency air conditioner so as to enable the left and right pendulum air volume to be smaller than or equal to a second preset air volume.
This scheme can further improve the oil return performance of compressor.
In one possible design, further comprising: and after the frequency of the variable frequency air conditioner reaches the target frequency or the rising frequency starting time of the variable frequency air conditioner is taken as the starting time, after the preset time, restoring the opening degree of an electronic expansion valve of the variable frequency air conditioner to the factory-set opening degree corresponding to the target frequency and/or controlling the rotating speed of the fan according to a fan rotating speed control instruction input by a user.
According to the scheme, the normal work of the variable frequency air conditioner can be realized on the basis of ensuring the oil return performance of the compressor.
In one possible design, further comprising: after the frequency of the variable frequency air conditioner reaches a target frequency or the rising frequency starting time of the variable frequency air conditioner is taken as the starting time and the preset time duration elapses, controlling the angle of the first stepping motor of the variable frequency air conditioner according to the angle control instruction of the first stepping motor input by the user and/or controlling the angle of the second stepping motor of the variable frequency air conditioner according to the angle control instruction of the second stepping motor input by the user.
According to the scheme, the normal work of the variable frequency air conditioner can be realized on the basis of ensuring the oil return performance of the compressor.
In one possible design, before controlling an opening degree of an electronic expansion valve of the inverter air conditioner to be less than or equal to a preset opening degree and/or controlling a rotation speed of a fan in an indoor unit of the inverter air conditioner to be less than or equal to a preset rotation speed, the method further includes: and determining that the outdoor temperature of the variable frequency air conditioner during starting is less than or equal to a preset temperature.
According to the scheme, the power consumption of the variable frequency air conditioner can be reduced and the user experience can be improved.
In one possible design, the preset time duration is a time duration that is elapsed from the frequency up to the highest working frequency that the inverter air conditioner can reach in the preset frequency up mode.
This scheme can guarantee to improve the realization of the oil return performance of compressor.
In a second aspect, the present invention provides an inverter air conditioner control device, including:
the first control module is used for controlling the frequency rising of the variable frequency air conditioner according to a preset frequency rising mode;
and the second control module is used for controlling the opening degree of an electronic expansion valve of the variable frequency air conditioner to be smaller than or equal to a preset opening degree and/or controlling the rotating speed of a fan in an indoor unit of the variable frequency air conditioner to be smaller than or equal to a preset rotating speed before the frequency of the variable frequency air conditioner reaches a target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner.
In one possible design, the second control module is further configured to: before the frequency of the variable frequency air conditioner reaches a target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner, controlling the angle of a first stepping motor of the variable frequency air conditioner so as to enable the vertical pendulum air volume to be smaller than or equal to a first preset air volume, and/or controlling the angle of a second stepping motor of the variable frequency air conditioner so as to enable the left and right pendulum air volume to be smaller than or equal to a second preset air volume.
In one possible design, the second control module is further configured to: and after the frequency of the variable frequency air conditioner reaches the target frequency or the rising frequency starting time of the variable frequency air conditioner is taken as the starting time, after the preset time, restoring the opening degree of an electronic expansion valve of the variable frequency air conditioner to the factory-set opening degree corresponding to the target frequency and/or controlling the rotating speed of the fan according to a fan rotating speed control instruction input by a user.
In one possible design, the second control module is further configured to: after the frequency of the variable frequency air conditioner reaches a target frequency or the rising frequency starting time of the variable frequency air conditioner is taken as the starting time and the preset time duration elapses, controlling the angle of the first stepping motor of the variable frequency air conditioner according to the angle control instruction of the first stepping motor input by the user and/or controlling the angle of the second stepping motor of the variable frequency air conditioner according to the angle control instruction of the second stepping motor input by the user.
In one possible design, the method further includes determining the module; before the second control module is used for controlling the opening degree of an electronic expansion valve of the variable frequency air conditioner to be smaller than or equal to a preset opening degree and/or controlling the rotating speed of a fan in an indoor unit of the variable frequency air conditioner to be smaller than or equal to a preset rotating speed, the determining module is further used for determining that the outdoor temperature when the variable frequency air conditioner is started is smaller than or equal to a preset temperature.
In a third aspect, the present application provides an inverter air conditioner, comprising: a processor and a memory; the memory is configured to store computer-executable instructions for causing the processor to execute the computer-executable instructions to implement the method of the first aspect and any possible design of the first aspect.
In a fourth aspect, the present invention also provides a computer-readable storage medium containing a program or instructions for performing the method of the first aspect and any possible design of the first aspect when the program or instructions are run on a computer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an inverter air conditioner provided in an embodiment of the present application;
fig. 2 is a first flowchart of a control method of an inverter air conditioner according to an embodiment of the present invention;
fig. 3 is a second flowchart of a control method of an inverter air conditioner according to an embodiment of the present invention;
FIG. 4 is a first schematic structural diagram of a variable frequency air conditioner control device according to the present invention;
FIG. 5 is a schematic structural diagram of a control device of an inverter air conditioner according to the present invention;
fig. 6 is a schematic structural diagram of an inverter air conditioner according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments of the present invention may be arbitrarily combined with each other without conflict.
In the present invention, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple. The terms "first," "second," and the like in the description herein are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Before describing the present application, first, an inverter air-conditioning heating process according to the present application will be described.
Fig. 1 is a schematic structural diagram of an inverter air conditioner according to an embodiment of the present application. Referring to fig. 1, the inverter air conditioner includes a storage tank 11, a compressor 12, a condenser 13, and an evaporator 14, with a four-way valve 15 between the compressor 12 and the condenser 13, and an electronic expansion valve 16 between the condenser 13 and the evaporator 14.
Referring to fig. 1, when the inverter air conditioner heats, a refrigerant in a storage tank 11 enters a compressor 12, high-temperature and high-pressure superheated steam obtained by compressing the refrigerant by the compressor 12 is discharged from an exhaust port of the compressor 12, the high-temperature and high-pressure superheated steam enters an evaporator 14 through a four-way valve 15, the high-temperature and high-pressure superheated steam performs heat exchange in the evaporator 14, formed hot gas is blown out from an air port through a fan (such as a cross-flow fan) of an indoor unit and enters a room, meanwhile, the high-temperature and high-pressure superheated steam becomes low-temperature and high-pressure liquid, and the low-temperature and high-pressure liquid enters a condenser 13 in. The low-temperature high-pressure liquid is vaporized in the condenser 13, absorbs a large amount of heat from the outside, and turns into dry saturated vapor again, and the formed cold air is blown out by a fan (such as an axial flow fan) of the outdoor unit and enters the outside. The dry saturated vapor finally enters the storage tank 11 through the four-way valve 16, and then enters the compressor from the storage tank 11 to continue the next heating cycle.
The control method of the variable frequency air conditioner is the control method of the variable frequency air conditioner during heating of the variable frequency air conditioner.
The method and the device for controlling the inverter air conditioner of the invention are explained by using specific embodiments.
First, a method for controlling an inverter air conditioner according to an embodiment of the present application will be described.
Fig. 2 is a first flowchart of a method for controlling an inverter air conditioner according to an embodiment of the present invention. The execution main body of the embodiment may be a variable frequency air conditioner control device, the variable frequency air conditioner control device may be implemented by hardware or software, and the variable frequency air conditioner control device may be a variable frequency air conditioner or may be a part of the variable frequency air conditioner. Referring to fig. 2, the method of the present embodiment includes:
and step S201, controlling the variable frequency air conditioner to increase frequency according to a preset frequency increasing mode.
The preset frequency increasing mode can be frequency increasing according to a preset frequency increasing rate; the preset rate may be 1 Hz/s. Alternatively, the preset frequency-increasing mode may be that the frequency is increased according to the preset frequency-increasing rate and maintained on the oil-returning frequency for a time period, which may be 1min, for example. The oil return frequency is, for example, 38Hz, 58Hz, 88 Hz.
Step S202, before the frequency of the variable frequency air conditioner reaches the target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner, controlling the opening degree of an electronic expansion valve of the variable frequency air conditioner to be smaller than or equal to a preset opening degree and/or controlling the rotating speed of a fan in an indoor unit of the variable frequency air conditioner to be smaller than or equal to a preset rotating speed.
The target frequency in this embodiment is calculated by the inverter air conditioner control device according to the ambient temperature when the inverter air conditioner is turned on. The ambient temperature is inversely proportional to the target frequency.
The preset duration in this embodiment may be a duration that is elapsed from the frequency boost to the highest working frequency that the inverter air conditioner can reach in the preset frequency boost mode of the inverter air conditioner.
The preset opening degree in this embodiment may be m times the minimum opening degree plus the maximum opening degree of the electronic expansion valve, and m may be any value in the set [ 0% to 10% ].
The preset rotation speed in this embodiment may be n times the minimum rotation speed plus the maximum rotation speed of the fan in the indoor unit, and n may be any value in the set [ 0% to 10% ].
In an optional scheme, before the frequency of the inverter air conditioner reaches the target frequency, or within a preset time period after the rising frequency starting time of the inverter air conditioner, controlling the opening degree of an electronic expansion valve of the inverter air conditioner to be less than or equal to a preset opening degree and/or controlling the rotating speed of a fan in an indoor unit of the inverter air conditioner to be less than or equal to a preset rotating speed includes: before the frequency of the variable frequency air conditioner reaches the target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner, controlling the opening degree of an electronic expansion valve of the variable frequency air conditioner to be the minimum opening degree and/or controlling the rotating speed of a fan in an indoor unit of the variable frequency air conditioner to be the minimum rotating speed.
Before the frequency of the inverter air conditioner reaches the target frequency or within a preset time length after the frequency rising starting moment of the inverter air conditioner, if the opening degree of an electronic expansion valve of the inverter air conditioner is controlled to be smaller than or equal to the preset opening degree, the opening degree of the electronic expansion valve is very small, so that the amount of low-temperature and high-pressure liquid (refrigerant) flowing out of an evaporator entering a condenser in an outdoor unit is small; accordingly, the amount of dry saturated vapor (refrigerant) which is changed from low-temperature high-pressure liquid in the condenser is small, the amount of dry saturated vapor (refrigerant) entering the compressor is small, namely, the refrigerant flow amount in the variable frequency air conditioner is reduced, so that the return air temperature is high relative to the opening degree of the electronic expansion valve when the opening degree is at a larger opening degree corresponding to the target frequency, namely, the factory-set opening degree, and the oil return performance of the compressor can be improved.
Before the frequency of the variable frequency air conditioner reaches the target frequency or within a preset time after the frequency rising starting moment of the variable frequency air conditioner, when the rotating speed of a fan in an indoor unit of the variable frequency air conditioner is controlled to be smaller than or equal to a preset rotating speed, the rotating speed of the fan is smaller, so that after high-temperature and high-pressure superheated steam from a compressor is subjected to heat exchange in an evaporator, less hot air is blown out of a room by the fan of the indoor unit, the temperature of a coil pipe of the indoor unit can be increased, and the temperature of low-temperature and high-pressure liquid which is changed into high-temperature and high-pressure superheated steam after the heat exchange in the evaporator is higher; accordingly, the temperature of the dry saturated vapor of the low-temperature and high-pressure liquid in the condenser is relatively high, that is, the temperature of the dry saturated vapor entering the compressor is relatively high, that is, the return air temperature is relatively high, and the oil return performance of the compressor can be improved.
Optionally, in order to reduce power consumption of the inverter air conditioner and improve user experience. Before the frequency of the inverter air conditioner reaches the target frequency, or within a preset time after the rising frequency starting moment of the inverter air conditioner, before the opening degree of an electronic expansion valve of the inverter air conditioner is controlled to be less than or equal to the preset opening degree and/or the rotating speed of a fan in an indoor unit of the inverter air conditioner is controlled to be less than or equal to the preset rotating speed, the method further comprises the following steps: and determining that the outdoor temperature is less than or equal to the preset temperature when the variable frequency air conditioner is started. The outdoor temperature can be detected through an outer ring temperature sensor of the variable frequency air conditioner. Wherein the preset temperature can be any temperature between the sets [ -8, -3 ].
That is, when the outdoor temperature of the inverter air conditioner during starting is less than or equal to the preset temperature, the opening degree of an electronic expansion valve of the inverter air conditioner is controlled to be less than or equal to the preset opening degree and/or the rotating speed of a fan in an indoor unit of the inverter air conditioner is controlled to be less than or equal to the preset rotating speed before the frequency of the inverter air conditioner reaches the target frequency or within the preset time length after the frequency rising starting moment of the inverter air conditioner; otherwise, the opening degree of the electronic expansion valve is the factory-set opening degree corresponding to the target frequency, and the rotating speed of the fan in the indoor unit is controlled according to a fan rotating speed control instruction input by a user.
Further, the inverter air conditioner control method may further include: after the frequency of the variable frequency air conditioner reaches the target frequency or the frequency rising starting time of the variable frequency air conditioner is taken as the starting time, after a preset time, the opening degree of an electronic expansion valve of the variable frequency air conditioner is restored to the factory-set opening degree corresponding to the target frequency and/or the rotating speed of the fan is controlled according to the fan rotating speed control instruction.
Before the frequency of the inverter air conditioner reaches the target frequency, or within a preset time length after the frequency rising starting moment of the inverter air conditioner, under the condition that the opening degree of an electronic expansion valve of the inverter air conditioner is controlled to be smaller than or equal to the preset opening degree, the control method of the inverter air conditioner further comprises the following steps: after the frequency of the variable frequency air conditioner reaches the target frequency or the frequency-rising starting time of the variable frequency air conditioner is taken as the starting time, and after a preset time period, the opening degree of an electronic expansion valve of the variable frequency air conditioner is restored to the factory-set opening degree corresponding to the target frequency. Before the frequency of the inverter air conditioner reaches the target frequency, or within a preset time after the rising frequency starting moment of the inverter air conditioner, including controlling the rotating speed of a fan in an indoor unit of the inverter air conditioner to be less than or equal to the preset rotating speed, the inverter air conditioner control method further comprises the following steps: after the frequency of the variable frequency air conditioner reaches the target frequency or the frequency rising starting moment of the variable frequency air conditioner is taken as the starting moment and after a preset time, controlling the rotating speed of the fan according to a fan rotating speed control instruction input by a user.
The fan rotating speed control instruction can be input by a user before the variable frequency air conditioner is shut down last time, or input by the user before the frequency of the variable frequency air conditioner reaches the target frequency, or input within a preset time after the frequency rising starting time of the variable frequency air conditioner, or input by the user after the frequency of the variable frequency air conditioner reaches the target frequency (including the time when the frequency of the variable frequency air conditioner reaches the target frequency), or input by the user after the preset time by taking the frequency rising starting time of the variable frequency air conditioner as the starting time. A user can input a fan rotating speed control instruction through a remote controller or a variable frequency air conditioner input interface.
In the embodiment, the frequency of the variable frequency air conditioner is increased according to a preset frequency increasing mode by controlling the variable frequency air conditioner; before the frequency of the variable frequency air conditioner reaches the target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner, the opening degree of an electronic expansion valve of the variable frequency air conditioner is controlled to be smaller than or equal to the preset opening degree and/or the rotating speed of a fan in an indoor unit of the variable frequency air conditioner is controlled to be smaller than or equal to the preset rotating speed, the return air temperature can be increased, and therefore the oil return performance of the compressor is improved.
In order to further improve the oil return performance of the compressor, the embodiment is further improved on the basis of the embodiment shown in fig. 2.
Fig. 3 is a third flowchart of the process provided in the embodiment of the present invention. Referring to fig. 3, the method of the present embodiment includes:
and S301, controlling the variable frequency air conditioner to perform frequency raising according to a preset frequency raising mode.
The specific implementation of this step is described with reference to step S201 in the embodiment shown in fig. 2, and is not described here again.
And S302, before the frequency of the variable frequency air conditioner reaches the target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner, controlling the opening degree of an electronic expansion valve of the variable frequency air conditioner to be smaller than or equal to a preset opening degree and/or controlling the rotating speed of a fan in an indoor unit of the variable frequency air conditioner to be smaller than or equal to a preset rotating speed.
The specific implementation of this step is described with reference to step S202 in the embodiment shown in fig. 2, and is not described here again.
And S303, before the frequency of the variable frequency air conditioner reaches the target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner, controlling the angle of a first stepping motor of the variable frequency air conditioner so that the vertical pendulum air volume is smaller than or equal to the first preset air volume, and/or controlling the angle of a second stepping motor of the variable frequency air conditioner so that the left and right pendulum air volume is smaller than or equal to the second preset air volume.
The angle of a guide plate of the variable frequency air conditioner can be controlled by controlling the angle of the first stepping motor, so that the aim of adjusting the air volume of the vertical swinging air is fulfilled; the number of the first stepping motors may be one or two. The angle of the swinging blade of the variable frequency air conditioner can be controlled by controlling the angle of the second stepping motor, so that the aim of adjusting the left and right swinging air quantity is fulfilled; the number of the second stepping motors may be one.
In this embodiment, the first preset air volume may be p times the minimum vertical air volume plus the maximum vertical air volume, and p may be any value in the set [ 0% to 10% ].
The second preset air volume in this embodiment may be q times the minimum vertical swing air volume plus the maximum vertical swing air volume, and q may be any value in the set [ 0% to 10% ].
In an optional scheme, before the frequency of the inverter air conditioner reaches the target frequency, or within a preset time period after the rising frequency starting time of the inverter air conditioner, controlling an angle of a first stepping motor of the inverter air conditioner so that the vertical pendulum air volume is less than or equal to a first preset air volume, and/or controlling an angle of a second stepping motor of the inverter air conditioner so that the horizontal pendulum air volume is less than or equal to a second preset air volume, includes: before the frequency of the variable frequency air conditioner reaches the target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner, controlling the angle of a first stepping motor of the variable frequency air conditioner so as to minimize the up-and-down swing air volume, and/or controlling the angle of a second stepping motor of the variable frequency air conditioner so as to minimize the left-and-right swing air volume.
Before the frequency of the variable frequency air conditioner reaches a target frequency or within a preset time length after a frequency rising starting moment of the variable frequency air conditioner, controlling the angle of a first stepping motor of the variable frequency air conditioner to enable the air volume of upward and downward swinging to be minimum, and/or controlling the angle of a second stepping motor of the variable frequency air conditioner to enable the air volume of leftward and rightward swinging to be minimum, and when high-temperature high-pressure superheated steam from a compressor is subjected to heat exchange in an evaporator, less hot air is blown out of a room by a fan of an indoor unit, so that the temperature of a coil pipe of the indoor unit can be increased, and the temperature of low-temperature high-pressure liquid obtained after the high-temperature high-pressure superheated steam is subjected to heat exchange in the evaporator is higher than the rotating speed; accordingly, the temperature of the dry saturated vapor of the low-temperature and high-pressure liquid in the condenser is relatively high, that is, the temperature of the dry saturated vapor entering the compressor is relatively high, that is, the return air temperature is relatively high, and the oil return performance of the compressor can be improved.
Further, the inverter air conditioner control method may further include: after the frequency of the variable frequency air conditioner reaches the target frequency or the rising frequency starting time of the variable frequency air conditioner is taken as the starting time and after a preset time length, controlling the angle of a first stepping motor of the variable frequency air conditioner according to the angle control instruction of the first stepping motor and/or controlling the angle of a second stepping motor of the variable frequency air conditioner according to the angle control instruction of the second stepping motor.
It can be understood that, before the frequency of the inverter air conditioner reaches the target frequency, or within a preset time period after the rising start time of the inverter air conditioner, the method includes controlling an angle of a first stepping motor of the inverter air conditioner, so that the up-and-down swinging air volume is smaller than or equal to a first preset air volume, and the method further includes: after the frequency of the variable frequency air conditioner reaches the target frequency or the rising frequency starting moment of the variable frequency air conditioner is taken as the starting moment and after a preset time length, controlling the angle of a first stepping motor of the variable frequency air conditioner according to the angle control instruction of the first stepping motor. Before the frequency of the variable frequency air conditioner reaches the target frequency, or within a preset time length after the rising frequency starting moment of the variable frequency air conditioner, the method comprises the step of controlling the angle of a second stepping motor of the variable frequency air conditioner so as to enable the left and right swinging air volume to be smaller than or equal to a second preset air volume, and the method further comprises the following steps: and after the frequency of the variable frequency air conditioner reaches the target frequency or the rising frequency starting moment of the variable frequency air conditioner is taken as the starting moment and the preset time duration is passed, controlling the angle of a second stepping motor of the variable frequency air conditioner according to the angle control instruction of the second stepping motor.
The angle control instruction of the first stepping motor and the angle control instruction of the second stepping motor can be input by a user before the variable frequency air conditioner is shut down last time; the angle control instruction of the first stepping motor and the angle control instruction of the second stepping motor can be input by a user before the frequency of the variable frequency air conditioner reaches the target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner; the angle control instruction of the first stepping motor and the angle control instruction of the second stepping motor may also be input by a user after the frequency of the variable frequency air conditioner reaches the target frequency (including the time when the frequency of the variable frequency air conditioner reaches the target frequency), or after a preset time period with the frequency-up start time of the variable frequency air conditioner as the start time.
And a user can input the angle control instruction of the first stepping motor and the angle control instruction of the second stepping motor through a remote controller or a variable frequency air conditioner input interface.
The method of the embodiment further improves the oil return performance of the compressor.
The inverter air conditioner control method provided by the invention is explained in detail above, and the device and equipment provided by the invention are explained below.
Fig. 4 is a schematic structural diagram of a control device of an inverter air conditioner according to the present invention, and referring to fig. 4, the device of the present embodiment includes: a first control module 401 and a second control module 402.
The first control module 401 is used for controlling the variable frequency air conditioner to perform frequency boost according to a preset frequency boost mode; a second control module 402, configured to control an opening degree of an electronic expansion valve of the inverter air conditioner to be less than or equal to a preset opening degree and/or control a rotation speed of a fan in an indoor unit of the inverter air conditioner to be less than or equal to a preset rotation speed before a frequency of the inverter air conditioner reaches a target frequency or within a preset time length after a frequency rising start time of the inverter air conditioner.
Optionally, the second control module 402 is further configured to: before the frequency of the variable frequency air conditioner reaches a target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner, controlling the angle of a first stepping motor of the variable frequency air conditioner so as to enable the vertical pendulum air volume to be smaller than or equal to a first preset air volume, and/or controlling the angle of a second stepping motor of the variable frequency air conditioner so as to enable the left and right pendulum air volume to be smaller than or equal to a second preset air volume.
Optionally, the second control module 402 is further configured to: and after the frequency of the variable frequency air conditioner reaches the target frequency or the rising frequency starting time of the variable frequency air conditioner is taken as the starting time, after the preset time, restoring the opening degree of an electronic expansion valve of the variable frequency air conditioner to the factory-set opening degree corresponding to the target frequency and/or controlling the rotating speed of the fan according to a fan rotating speed control instruction input by a user.
Optionally, the second control module 402 is further configured to: after the frequency of the variable frequency air conditioner reaches a target frequency or the rising frequency starting time of the variable frequency air conditioner is taken as the starting time and the preset time duration elapses, controlling the angle of the first stepping motor of the variable frequency air conditioner according to the angle control instruction of the first stepping motor input by the user and/or controlling the angle of the second stepping motor of the variable frequency air conditioner according to the angle control instruction of the second stepping motor input by the user.
The inverter air conditioner control device of this embodiment may be configured to execute the technical solutions in the above method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
Fig. 5 is a schematic structural diagram of a control device of an inverter air conditioner provided by the present invention, and referring to fig. 5, the device of this embodiment further includes, on the basis of the device shown in fig. 4: a determination module 403.
Before the second control module 401 is configured to control an opening degree of an electronic expansion valve of the inverter air conditioner to be less than or equal to a preset opening degree and/or control a rotation speed of a fan in an indoor unit of the inverter air conditioner to be less than or equal to a preset rotation speed, the determining module 403 is further configured to determine that an outdoor temperature when the inverter air conditioner is started is less than or equal to a preset temperature.
The inverter air conditioner control device of this embodiment may be configured to execute the technical solutions in the above method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
Fig. 6 is a schematic structural diagram of an inverter air conditioner according to an embodiment of the present invention. As shown in fig. 6, the inverter air conditioner 600 may be used to implement the method described in the above method embodiment, and refer to the description in the above method embodiment specifically.
The inverter air conditioner 600 may include one or more processors 601, where the processors 601 may also be referred to as processing units, and control the execution of the method in the above method embodiments. The processor 601 may be a general purpose processor or a special purpose processor, etc. For example, a baseband processor, or a central processor. The baseband processor may be configured to process communication protocols and communication data, and the central processor may be configured to control the communication device, execute software programs, and process data of the software programs.
In an alternative design, processor 601 may also have instructions 603 or data (e.g., intermediate data) stored therein. The instructions 603 may be executed by the processor, so that the inverter air conditioner 600 performs the method described in the above method embodiment.
Optionally, the inverter air conditioner 600 may include one or more memories 602, on which instructions 604 may be stored, and the instructions may be executed on the processor, so that the inverter air conditioner 600 performs the method described in the above method embodiment.
Optionally, the memory may also store data. The processor 501 and the memory 602 may be provided separately or integrated together.
Optionally, the inverter air conditioner 600 may further include a transceiver 605 and/or an antenna 606. The transceiver 605 may be referred to as a transceiver unit, a transceiver, a transceiving circuit, a transceiver, or the like, and is used for implementing transceiving functions of a communication device. For example, in the case that the variable frequency air conditioner in this embodiment pushes the first reminding information to the terminal device, the variable frequency air conditioner includes the transceiver 605 and/or the antenna 606.
The processor 601 and the transceiver 605 described in the present invention may be implemented on an Integrated Circuit (IC), an analog IC, a Radio Frequency Integrated Circuit (RFIC), a mixed signal IC, an Application Specific Integrated Circuit (ASIC), a Printed Circuit Board (PCB), an electronic device, and the like. The processor and transceiver may also be fabricated using various 1C process technologies, such as Complementary Metal Oxide Semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (PMOS), Bipolar Junction Transistor (BJT), bipolar CMOS (bicmos), silicon germanium (SiGe), gallium arsenide (GaAs), and the like.
It should be understood that the processor mentioned in the embodiments of the present invention may be a Central Processing Unit (CPU), and may also be other general purpose processors, Digital Signal Processors (DSP), Application Specific Integrated Circuits (ASIC), Field Programmable Gate Arrays (FPGA) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
It will also be appreciated that the memory referred to in this embodiment of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double data rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM).
Embodiments of the present invention also provide a computer-readable storage medium, which includes a program or instructions, and when the program or instructions are run on a computer, the method in the above method embodiments is executed.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (10)

1. A control method of a variable frequency air conditioner is characterized by comprising the following steps:
controlling the variable frequency air conditioner to carry out frequency rising according to a preset frequency rising mode;
before the frequency of the variable frequency air conditioner reaches a target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner, controlling the opening degree of an electronic expansion valve of the variable frequency air conditioner to be smaller than or equal to a preset opening degree and/or controlling the rotating speed of a fan in an indoor unit of the variable frequency air conditioner to be smaller than or equal to a preset rotating speed.
2. The method of claim 1, further comprising:
before the frequency of the variable frequency air conditioner reaches a target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner, controlling the angle of a first stepping motor of the variable frequency air conditioner so as to enable the vertical pendulum air volume to be smaller than or equal to a first preset air volume, and/or controlling the angle of a second stepping motor of the variable frequency air conditioner so as to enable the left and right pendulum air volume to be smaller than or equal to a second preset air volume.
3. The method of claim 1 or 2, further comprising:
and after the frequency of the variable frequency air conditioner reaches the target frequency or the rising frequency starting time of the variable frequency air conditioner is taken as the starting time, after the preset time, restoring the opening degree of an electronic expansion valve of the variable frequency air conditioner to the factory-set opening degree corresponding to the target frequency and/or controlling the rotating speed of the fan according to a fan rotating speed control instruction input by a user.
4. The method of claim 2, further comprising:
after the frequency of the variable frequency air conditioner reaches a target frequency or the rising frequency starting time of the variable frequency air conditioner is taken as the starting time and the preset time duration elapses, controlling the angle of the first stepping motor of the variable frequency air conditioner according to the angle control instruction of the first stepping motor input by the user and/or controlling the angle of the second stepping motor of the variable frequency air conditioner according to the angle control instruction of the second stepping motor input by the user.
5. The method of claim 1 or 2, before controlling the opening degree of the electronic expansion valve of the inverter air conditioner to be less than or equal to a preset opening degree and/or controlling the rotation speed of a fan in an indoor unit of the inverter air conditioner to be less than or equal to a preset rotation speed, further comprising:
and determining that the outdoor temperature of the variable frequency air conditioner during starting is less than or equal to a preset temperature.
6. The method according to claim 1 or 2, wherein the preset time period is a time period for raising the frequency to the highest working frequency which can be reached by the inverter air conditioner in the preset raising frequency mode.
7. The utility model provides a variable frequency air conditioner controlling means which characterized in that includes:
the first control module is used for controlling the frequency rising of the variable frequency air conditioner according to a preset frequency rising mode;
and the second control module is used for controlling the opening degree of an electronic expansion valve of the variable frequency air conditioner to be smaller than or equal to a preset opening degree and/or controlling the rotating speed of a fan in an indoor unit of the variable frequency air conditioner to be smaller than or equal to a preset rotating speed before the frequency of the variable frequency air conditioner reaches a target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner.
8. The apparatus of claim 7, wherein the second control module is further configured to:
before the frequency of the variable frequency air conditioner reaches a target frequency or within a preset time length after the frequency rising starting moment of the variable frequency air conditioner, controlling the angle of a first stepping motor of the variable frequency air conditioner so as to enable the vertical pendulum air volume to be smaller than or equal to a first preset air volume, and/or controlling the angle of a second stepping motor of the variable frequency air conditioner so as to enable the left and right pendulum air volume to be smaller than or equal to a second preset air volume.
9. The apparatus of claim 7 or 8, further comprising a determination module;
before the second control module is used for controlling the opening degree of an electronic expansion valve of the variable frequency air conditioner to be smaller than or equal to a preset opening degree and/or controlling the rotating speed of a fan in an indoor unit of the variable frequency air conditioner to be smaller than or equal to a preset rotating speed, the determining module is further used for determining that the outdoor temperature when the variable frequency air conditioner is started is smaller than or equal to a preset temperature.
10. The utility model provides a variable frequency air conditioner which characterized in that includes: a processor and a memory;
the memory is configured to store computer-executable instructions to cause the processor to execute the computer-executable instructions to implement the method of any one of claims 1-6.
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