CN113324325B - Accurate temperature control method and device of air conditioner and air conditioner - Google Patents

Accurate temperature control method and device of air conditioner and air conditioner Download PDF

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Publication number
CN113324325B
CN113324325B CN202110517284.1A CN202110517284A CN113324325B CN 113324325 B CN113324325 B CN 113324325B CN 202110517284 A CN202110517284 A CN 202110517284A CN 113324325 B CN113324325 B CN 113324325B
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air conditioner
temperature
value
compressor
information
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CN113324325A (en
Inventor
陈宁
梁勇超
张新洲
王鹏飞
谭然新
刘名晶
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TCL Air Conditioner Zhongshan Co Ltd
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TCL Air Conditioner Zhongshan 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The application provides an accurate temperature control method and device of an air conditioner and the air conditioner, relates to the technical field of air conditioners, and solves the problems that the air conditioner cannot stably operate after reaching the temperature, and the air conditioner is stopped when reaching the temperature or the running frequency of a compressor is increased or decreased without stopping, and the method comprises the following steps: the method comprises the steps of obtaining an air conditioner temperature set value and a current first indoor environment temperature value, determining a first target temperature difference value according to the air conditioner temperature set value and the first indoor environment temperature value, and obtaining operation parameters of the air conditioner, wherein the operation parameters of the air conditioner comprise current operation frequency information of a compressor of the air conditioner or current temperature information of an inner pipe of a heat exchanger of the air conditioner, adjusting the operation frequency of the compressor and/or the rotating speed of an indoor fan according to the first target temperature difference value and the operation parameters of the air conditioner, and accurately controlling the temperature of the air conditioner and keeping the stable operation of the air conditioner through a joint control mode of controlling the operation frequency of the compressor and the rotating speed of the inner fan.

Description

Accurate temperature control method and device of air conditioner and air conditioner
Technical Field
The application relates to the technical field of air conditioners, in particular to an accurate temperature control method and device of an air conditioner and the air conditioner.
Background
With the improvement of the living standard of people, people continuously pursue higher living quality, the demand for intellectualization of household appliances is also larger and larger, the demand is not only satisfied with the cold and hot temperature adjusting function of an air conditioner, and higher comfort level is pursued. At present, the accuracy of adjusting the room temperature of the variable frequency air conditioner is mainly controlled by the ascending and descending of the running frequency of a compressor, because of the consideration of reliability such as noise or pipeline stress, the lower limit of the running frequency interval of the air conditioner has to be improved or more continuous running frequency shielding points are added to ensure the running reliability, the air conditioner cannot run stably after the room reaches the set temperature, the air conditioner stops running at the temperature or the running frequency of the compressor continuously rises and falls frequency with great fluctuation, the comfort experience effect of a user is greatly reduced, and the energy consumption is increased.
Disclosure of Invention
The application provides an accurate temperature control method and device for an air conditioner and the air conditioner, wherein the air conditioner is controlled accurately by controlling the running frequency of a compressor and controlling the rotating speed of an inner fan in a joint control mode, and the air conditioner is kept in stable running.
In one aspect, the present application provides an accurate temperature control method for an air conditioner, including the following steps:
acquiring an air conditioner temperature set value and a current first indoor environment temperature value;
determining a first target temperature difference value according to the air conditioner temperature set value and the first indoor environment temperature value;
acquiring the operating parameters of the air conditioner, wherein the operating parameters of the air conditioner comprise the current operating frequency information of a compressor of the air conditioner or the current temperature information of an inner pipe of a heat exchanger of the air conditioner;
and adjusting the operation frequency of the compressor and/or the rotation speed of the indoor fan according to the first target temperature difference value and the operation parameters of the air conditioner.
In a possible implementation manner of the present application, the acquiring current operating frequency information of a compressor of the air conditioner and current temperature information of an inner tube of a heat exchanger of the air conditioner includes:
acquiring an interval period for determining air conditioner related information;
and in the interval period, acquiring current running frequency information of a compressor of the air conditioner and current temperature information of an inner pipe of a heat exchanger of the air conditioner at least once.
In a possible implementation manner of the present application, the adjusting the operation frequency of the compressor and the rotating speed of the indoor fan according to the target temperature difference value information, the current operation frequency information of the compressor and the current temperature information of the inner tube of the heat exchanger includes:
determining the adjustment information of the compressor and the indoor fan according to the target temperature difference value information, the current running frequency information of the compressor and the current temperature information of the inner pipe of the heat exchanger;
and adjusting the running frequency of the compressor and the rotating speed of the indoor fan according to the adjustment information.
In one possible implementation manner of the present application, the adjusting the operation frequency of the compressor and/or the rotation speed of the indoor fan according to the first target temperature difference value and the operation parameter of the air conditioner includes:
comparing the first target temperature difference value with a preset first temperature value to obtain a first comparison result;
and under an air conditioner heating mode or an air conditioner cooling mode, if the first comparison result shows that the first target temperature difference value is greater than or equal to the first temperature value, determining the adjustment information as maintenance information, wherein the maintenance information indicates that the air conditioner maintains the current operation frequency of the compressor and the current rotating speed of the indoor fan unchanged.
In a possible implementation manner of this application, the adjusting the operation frequency of the compressor and/or the rotation speed of the indoor fan according to the first target temperature difference value and the operation parameter of the air conditioner further includes:
in a cooling mode of the air conditioner, if the first comparison result shows that the first target temperature difference value is smaller than the first temperature value, determining that the adjustment information is frequency reduction information, and indicating that the air conditioner reduces the running frequency of the compressor by the frequency reduction information.
In a possible implementation manner of this application, the adjusting the operation frequency of the compressor and/or the rotation speed of the indoor fan according to the first target temperature difference value and the operation parameter of the air conditioner further includes:
acquiring a current second indoor environment temperature value;
determining a second target temperature difference value according to the air conditioner temperature set value and the second indoor environment temperature value;
comparing the second target temperature difference value with a preset second temperature value to obtain a second comparison result;
in an air conditioner refrigeration mode, if the second comparison result is that the second target temperature difference value is equal to the second temperature value, determining that the adjustment information is maintenance information, and the maintenance information indicates that the air conditioner maintains the current operation frequency of the compressor and the current rotating speed of the indoor fan unchanged;
and if the second comparison result is that the second target temperature difference value is not equal to the second temperature value, determining that the adjustment information is frequency boosting information, and indicating the air conditioner to boost the running frequency of the compressor by the frequency boosting information.
In a possible implementation manner of this application, the adjusting the operation frequency of the compressor and/or the rotation speed of the indoor fan according to the first target temperature difference value and the operation parameter of the air conditioner further includes:
comparing the current operating frequency value of the compressor with a preset lowest threshold value of the compressor to obtain a comparison result of the operating frequency of the compressor;
in the air conditioner refrigeration mode, if the operation frequency comparison result of the compressor is that the current operation frequency value of the compressor is greater than the preset lowest threshold value of the compressor, determining that the adjustment information is frequency reduction information, and indicating that the air conditioner reduces the operation frequency of the compressor by the frequency reduction information;
and if the comparison result of the running frequency of the compressor is that the current running frequency value of the compressor is smaller than or equal to the preset lowest threshold value of the compressor, determining the adjustment information as maintenance information and speed reduction information, wherein the maintenance information indicates that the air conditioner maintains the current running frequency of the compressor unchanged, and the speed reduction information indicates that the air conditioner reduces the current rotating speed of the indoor fan.
In a possible implementation manner of this application, the adjusting the operation frequency of the compressor and/or the rotation speed of the indoor fan according to the first target temperature difference value and the operation parameter of the air conditioner further includes:
in an air conditioner heating mode, if the first comparison result is that the first target temperature difference value is smaller than the first temperature value, acquiring a first inner tube temperature value;
comparing the first inner tube temperature value with a preset first inner tube temperature threshold value to obtain a first inner tube temperature comparison result;
if the first inner tube temperature comparison result is that the first inner tube temperature value is greater than or equal to the first inner tube temperature threshold value, determining that the adjustment information is frequency reduction information, and indicating the air conditioner to reduce the running frequency of the compressor by the frequency reduction information;
and if the first inner pipe temperature comparison result shows that the first inner pipe temperature value is smaller than the first inner pipe temperature threshold value, determining that the adjustment information is speed reduction information, and indicating the air conditioner to reduce the current rotating speed of the indoor fan by the speed reduction information.
In a possible implementation manner of this application, the adjusting the operation frequency of the compressor and/or the rotation speed of the indoor fan according to the first target temperature difference value and the operation parameter of the air conditioner further includes:
acquiring a current ambient temperature value in a third room in an air-conditioning heating mode;
determining a third target temperature difference value according to the air conditioner temperature set value and the third indoor environment temperature value;
comparing the third target temperature difference value with a preset third temperature value to obtain a third comparison result;
if the third comparison result is that the third target temperature difference value is smaller than or equal to the third temperature value and the first inner pipe temperature comparison result is that the first inner pipe temperature value is larger than or equal to the first inner pipe temperature threshold value, determining that the adjustment information is maintenance information, and the maintenance information indicates that the air conditioner maintains the current operation frequency of the compressor and the current rotating speed of the indoor fan unchanged;
and if the third comparison result shows that the third target temperature difference value is greater than the third temperature value and the first inner tube temperature comparison result shows that the first inner tube temperature value is less than the first inner tube temperature threshold value, determining that the adjustment information is frequency-increasing information, and indicating the air conditioner to increase the running frequency of the compressor by the maintenance information.
In a possible implementation manner of this application, the adjusting the operation frequency of the compressor and/or the rotation speed of the indoor fan according to the first target temperature difference value and the operation parameter of the air conditioner further includes:
acquiring a second inner tube temperature value;
comparing the second inner tube temperature value with a preset second inner tube temperature threshold value to obtain a second inner tube temperature comparison result;
in an air conditioner heating mode, if the second inner tube temperature comparison result shows that the second inner tube temperature value is smaller than or equal to the second inner tube temperature threshold value, determining that the adjustment information is speed reduction information, and indicating that the air conditioner reduces the current rotating speed of the indoor fan by the speed reduction information;
and if the second inner pipe temperature comparison result shows that the second inner pipe temperature value is greater than the second inner pipe temperature threshold value, determining that the adjustment information is acceleration information, and indicating the air conditioner to increase the current rotating speed of the indoor fan by the acceleration information.
In a possible implementation manner of the present application, the adjusting the operation frequency of the compressor and/or the rotation speed of the indoor fan according to the first target temperature difference value and the operation parameter of the air conditioner includes:
acquiring the adjustment information instruction;
and acquiring the adjustment information of the compressor and the indoor fan according to the adjustment direction instruction.
On the other hand, the present application provides an accurate temperature control device of air conditioner, the device includes:
the first temperature acquisition module is used for acquiring an air conditioner temperature set value and a current first indoor environment temperature value;
the first target temperature difference value determining module is used for determining a first target temperature difference value according to the air conditioner temperature set value and the first indoor environment temperature value;
the air conditioner operation parameter acquisition module is used for acquiring operation parameters of the air conditioner, wherein the operation parameters of the air conditioner comprise current operation frequency information of a compressor of the air conditioner or current temperature information of an inner pipe of a heat exchanger of the air conditioner;
and the air conditioner operation adjusting module is used for adjusting the operation frequency of the compressor and/or the rotating speed of the indoor fan according to the first target temperature difference value and the operation parameters of the air conditioner.
The air conditioner operation parameter acquisition module comprises:
the interval period setting module is used for acquiring an interval period used for determining the related information of the air conditioner;
and the air conditioner is used for acquiring the current running frequency information of the compressor of the air conditioner and the current temperature information of the inner pipe of the heat exchanger of the air conditioner at least once in the interval period.
The air conditioner operation adjustment module includes:
the adjustment information determining module is used for determining the adjustment information of the compressor and the indoor fan according to the target temperature difference value information, the current running frequency information of the compressor and the current temperature information of the inner pipe of the heat exchanger;
and the adjustment information execution module adjusts the running frequency of the compressor and the rotating speed of the indoor fan according to the adjustment information.
The air conditioner operation adjustment module includes:
the first target temperature difference value comparison module is used for comparing the first target temperature difference value with a preset first temperature value to obtain a first comparison result;
the air conditioner operation adjusting module is specifically used for:
and in an air conditioner heating mode or an air conditioner refrigerating mode, if the first comparison result is that the first target temperature difference value is greater than or equal to the first temperature value, determining that the adjustment information is maintenance information, wherein the maintenance information indicates that the air conditioner maintains the current operating frequency of the compressor and the current rotating speed of the indoor fan unchanged.
The air conditioner operation adjusting module is specifically used for:
in a cooling mode of the air conditioner, if the first comparison result is that the first target temperature difference value is smaller than the first temperature value, determining that the adjustment information is frequency reduction information, and indicating that the air conditioner reduces the running frequency of the compressor by the frequency reduction information.
The air conditioner operation adjustment module includes:
the second temperature acquisition module is used for acquiring a current second indoor environment temperature value;
the second target temperature difference value determining module is used for determining a second target temperature difference value according to the air conditioner temperature set value and the second indoor environment temperature value;
the second target temperature difference value comparison module is used for comparing the second target temperature difference value with a preset second temperature value to obtain a second comparison result;
the air conditioner operation adjusting module is specifically used for:
in an air conditioner refrigeration mode, if the second comparison result is that the second target temperature difference value is equal to the second temperature value, determining that the adjustment information is maintenance information, and the maintenance information indicates that the air conditioner maintains the current operation frequency of the compressor and the current rotating speed of the indoor fan unchanged;
and if the second comparison result shows that the second target temperature difference value is not equal to the second temperature value, determining that the adjustment information is frequency-increasing information, and indicating the air conditioner to increase the running frequency of the compressor by the frequency-increasing information.
The air conditioner operation adjustment module includes:
the compressor running frequency comparison module is used for comparing the current running frequency value of the compressor with a preset compressor lowest threshold value to obtain a compressor running frequency comparison result;
the air conditioner operation adjusting module is specifically used for:
in the air conditioner refrigeration mode, if the operation frequency comparison result of the compressor is that the current operation frequency value of the compressor is greater than the preset lowest threshold value of the compressor, determining that the adjustment information is frequency reduction information, and indicating that the air conditioner reduces the operation frequency of the compressor by the frequency reduction information;
and if the comparison result of the running frequency of the compressor is that the current running frequency value of the compressor is smaller than or equal to the preset lowest threshold value of the compressor, determining the adjustment information as maintenance information and speed reduction information, wherein the maintenance information indicates that the air conditioner maintains the current running frequency of the compressor unchanged, and the speed reduction information indicates that the air conditioner reduces the current rotating speed of the indoor fan.
The air conditioner operation adjustment module includes:
the first inner tube temperature acquisition module is used for acquiring a first inner tube temperature value;
the first inner tube temperature comparison module is used for comparing the first inner tube temperature value with a preset first inner tube temperature threshold value to obtain a first inner tube temperature comparison result;
the air conditioner operation adjusting module is specifically used for:
in an air conditioner heating mode, if the first inner tube temperature comparison result shows that the first inner tube temperature value is greater than or equal to the first inner tube temperature threshold value, determining that the adjustment information is frequency reduction information, and indicating that the air conditioner reduces the running frequency of the compressor by the frequency reduction information;
and if the first inner pipe temperature comparison result shows that the first inner pipe temperature value is smaller than the first inner pipe temperature threshold value, determining that the adjustment information is speed reduction information, and indicating the air conditioner to reduce the current rotating speed of the indoor fan by the speed reduction information.
The air conditioner operation adjustment module includes:
the third temperature acquisition module is used for acquiring the current ambient temperature value in the third chamber;
the third target temperature difference value determining module is used for determining a third target temperature difference value according to the air conditioner temperature set value and the third indoor environment temperature value;
the third target temperature difference value comparison module is used for comparing the third target temperature difference value with a preset third temperature value to obtain a third comparison result;
the air conditioner operation adjusting module is specifically used for:
in an air conditioner heating mode, if the third comparison result is that the third target temperature difference value is smaller than or equal to the third temperature value and the first inner pipe temperature comparison result is that the first inner pipe temperature value is larger than or equal to the first inner pipe temperature threshold value, determining that the adjustment information is maintenance information, and the maintenance information indicates that the air conditioner maintains the current operation frequency of the compressor and the current rotating speed of the indoor fan unchanged;
and if the third comparison result shows that the third target temperature difference value is greater than the third temperature value and the first inner tube temperature comparison result shows that the first inner tube temperature value is less than the first inner tube temperature threshold value, determining that the adjustment information is frequency-increasing information, and indicating the air conditioner to increase the running frequency of the compressor by the maintenance information.
The air conditioner operation adjustment module includes:
the second inner tube temperature acquisition module is used for acquiring a second inner tube temperature value;
the second inner tube temperature comparison module is used for comparing the second inner tube temperature value with a preset second inner tube temperature threshold value to obtain a second inner tube temperature comparison result;
the air conditioner operation adjusting module is specifically used for:
in an air conditioner heating mode, if the second inner tube temperature comparison result shows that the second inner tube temperature value is smaller than or equal to the second inner tube temperature threshold value, determining that the adjustment information is speed reduction information, and indicating that the air conditioner reduces the current rotating speed of the indoor fan by the speed reduction information;
and if the second inner pipe temperature comparison result shows that the second inner pipe temperature value is greater than the second inner pipe temperature threshold value, determining that the adjustment information is acceleration information, and indicating the air conditioner to increase the current rotating speed of the indoor fan by the acceleration information.
The air conditioner operation adjustment module includes:
the adjustment instruction acquisition module is used for acquiring the adjustment information instruction;
and the adjusting instruction execution module is used for acquiring the adjusting information of the compressor and the indoor fan according to the adjusting direction instruction.
On the other hand, this application still provides an air conditioner, the air conditioner includes compressor, indoor fan, heat exchanger inner tube, indoor temperature sensor, inner tube temperature sensor and system controller, the air conditioner adopts the accurate temperature control method of air conditioner or have the accurate temperature regulating device of air conditioner.
According to the method and the device, the current running frequency information of the compressor and the current temperature information of the inner tube of the heat exchanger are obtained according to the target temperature difference value information, the current running state of the current indoor environment temperature and the current running state of the air conditioner is judged in real time, the running frequency of the compressor and the rotating speed of the inner fan are regulated and controlled in a linkage mode, the fine temperature regulation of the current indoor environment temperature is realized, the probability that the air conditioner is shut down when the temperature is reached is reduced, the user experience comfort level is enhanced, meanwhile, the running frequency of the compressor and the rotating speed of the inner fan are greatly adjusted, the stable running of the air conditioner is maintained, and energy consumption is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart illustrating an embodiment of a method for accurately controlling temperature of an air conditioner according to an embodiment of the present disclosure;
FIG. 2 is a schematic flow chart illustrating an embodiment of a method for accurately controlling temperature of an air conditioner according to an embodiment of the present disclosure;
FIG. 3 is a schematic flow chart illustrating an embodiment of a method for accurately controlling temperature of an air conditioner according to an embodiment of the present disclosure;
FIG. 4 is a schematic flow chart illustrating an embodiment of a method for accurately controlling temperature of an air conditioner according to an embodiment of the present disclosure;
FIG. 5 is a schematic flow chart illustrating an embodiment of a method for accurately controlling temperature of an air conditioner according to an embodiment of the present disclosure;
FIG. 6 is a schematic flow chart illustrating an embodiment of a method for accurately controlling temperature of an air conditioner according to an embodiment of the present disclosure;
FIG. 7 is a schematic flow chart illustrating an embodiment of a method for accurately controlling temperature of an air conditioner according to an embodiment of the present disclosure;
FIG. 8 is a schematic flow chart illustrating an embodiment of a method for accurately controlling temperature of an air conditioner according to an embodiment of the present disclosure;
FIG. 9 is a schematic flow chart illustrating an embodiment of a method for accurately controlling temperature of an air conditioner according to an embodiment of the present application;
FIG. 10 is a schematic structural diagram of an embodiment of an accurate temperature control device of an air conditioner according to an embodiment of the present application;
fig. 11 is a schematic structural diagram of an embodiment of an air conditioner in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
In the description of the present invention, it is to be understood that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of technical features indicated are in fact significant. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
The embodiment of the application provides an accurate temperature control method and device for an air conditioner and the air conditioner, which are respectively described in detail below.
As shown in fig. 1, which is a schematic flow chart of an embodiment of a method for accurately controlling temperature of an air conditioner in an embodiment of the present application, the method for accurately controlling temperature of an air conditioner includes the following steps 101 to 104:
step 101, acquiring an air conditioner temperature set value and a current first indoor environment temperature value;
when the air conditioner is started, the air conditioner acquires setting information of a refrigeration mode or a heating mode selected by a user, and simultaneously acquires an air conditioner temperature setting value set by the user, in the air conditioner operation process, the indoor environment temperature of the current environment is detected in real time through an indoor temperature sensor arranged in the air conditioner, and the detected indoor environment temperature of the current environment is used as a first indoor environment temperature value, illustratively, the air conditioner operation mode set by the user can be the refrigeration mode, the air conditioner temperature setting value can be 26 degrees, the detected indoor environment temperature of the current environment is 28 degrees, namely the first indoor environment temperature value is 28 degrees.
Step 102, determining a first target temperature difference value according to an air conditioner temperature set value and a first indoor environment temperature value;
the first target temperature difference value is a difference value between the air conditioner temperature setting value and a first indoor environment temperature value, and the system controller inside the air conditioner can conveniently judge whether the indoor environment temperature of the current environment is close to or reaches the air conditioner temperature setting value through the first target temperature difference value so as to control the operation parameters of the air conditioner.
103, acquiring operation parameters of the air conditioner, wherein the operation parameters of the air conditioner comprise current operation frequency information of a compressor of the air conditioner or current temperature information of an inner pipe of a heat exchanger of the air conditioner;
the method comprises the steps of detecting and acquiring the operation parameters of the air conditioner through a compressor driving unit and an inner tube temperature sensor in the air conditioner, sending the current operation frequency information of the compressor to a system controller of the air conditioner through the compressor driving unit in real time, and sending the current temperature information of an inner tube of a heat exchanger to the system controller of the air conditioner through the inner tube temperature sensor in real time.
And 104, adjusting the running frequency of the compressor and/or the rotating speed of the indoor fan according to the first target temperature difference value and the running parameters of the air conditioner.
In the air conditioner operation process, after obtaining a first target temperature difference value and an air conditioner operation parameter, adjusting the operation frequency of the compressor or/and the rotating speed of the indoor fan, exemplarily, in the cooling mode, when a first indoor environment temperature value is close to an air conditioner temperature set value, controlling the operation frequency of the compressor to be reduced, and circularly detecting the indoor environment temperature of the current environment, when the difference value between the first indoor environment temperature value and the air conditioner temperature set value is large, but when the compressor operation frequency is detected to be the lowest frequency, adjusting the cold air conveyed to the indoor by adjusting the rotating speed of the indoor fan, so as to achieve the purpose of adjusting the indoor environment temperature of the current environment.
According to the method and the device, the current running frequency information of the compressor and the current temperature information of the inner tube of the heat exchanger are obtained according to the target temperature difference value information, the current running state of the current indoor environment temperature and the current running state of the air conditioner is judged in real time, the running frequency of the compressor and the rotating speed of the inner fan are regulated and controlled in a linkage mode, the fine temperature regulation of the current indoor environment temperature is realized, the probability that the air conditioner is shut down when the temperature is reached is reduced, the user experience comfort level is enhanced, meanwhile, the running frequency of the compressor and the rotating speed of the inner fan are greatly adjusted, the stable running of the air conditioner is maintained, and energy consumption is reduced.
In another embodiment of the present application, acquiring current operating frequency information of a compressor of an air conditioner and current temperature information of an inner tube of a heat exchanger of the air conditioner includes the following steps:
acquiring an interval period for determining air conditioner related information;
an interval period is preset in a system controller of the air conditioner, and in the interval period, current operation frequency information of a compressor of the air conditioner and current temperature information of an inner pipe of a heat exchanger of the air conditioner are acquired at least once.
In the air conditioner operation process, the current indoor environment temperature, the compressor operation frequency and the indoor fan in the current room are all constantly changed, in a set interval period, the current compressor operation frequency and the current heat exchanger inner tube temperature are obtained, namely when the first indoor environment temperature value does not reach or reaches the air conditioner temperature set value, the indoor environment temperature, the current compressor operation frequency and the current heat exchanger inner tube temperature of the environment before detection are still circularly detected, the compressor operation frequency and the rotating speed of the indoor fan are circularly adjusted, the cold air output of the air conditioner is constantly finely adjusted, and therefore the indoor environment temperature of the current environment is kept constant to the maximum extent.
In another embodiment of the present application, as shown in fig. 2, adjusting the operating frequency of the compressor and the rotating speed of the indoor fan according to the target temperature difference value information, the current operating frequency information of the compressor and the current temperature information of the inner tube of the heat exchanger includes the following steps 201 to 202:
step 201, determining adjustment information of a compressor and an indoor fan according to target temperature difference value information, current running frequency information of the compressor and current temperature information of an inner tube of a heat exchanger;
the target temperature difference value information is a reference for judging that the current indoor environment temperature reaches an air conditioner temperature set value, and the current indoor environment temperature is associated with the current operating frequency of the compressor, the current temperature of the inner tube of the heat exchanger and the current rotating speed of the indoor fan, and then the adjustment information of the compressor and the indoor fan is determined directly through the target temperature difference value information, the current operating frequency information of the compressor and the current temperature information of the inner tube of the heat exchanger, wherein the adjustment information can be ascending frequency information for controlling the ascending frequency of the compressor, descending frequency information for controlling the descending frequency of the compressor, ascending speed information for controlling the ascending speed of the indoor fan, descending speed information for controlling the descending speed of the indoor fan and maintaining information for controlling the current operating frequency of the compressor and the rotating speed of the indoor fan to be unchanged.
In an exemplary case, in the cooling mode, when the first indoor environment temperature value is close to the air conditioner temperature setting value, it is determined that the adjustment information of the compressor is the frequency reduction information, and the frequency reduction information corresponds to controlling the operation frequency of the compressor to be reduced. When the difference value between the first indoor environment temperature value and the air conditioner temperature set value is large, but the compressor operation frequency is detected to be the lowest frequency, the determined adjustment information is the speed reduction information.
And 202, adjusting the running frequency of the compressor and the rotating speed of the indoor fan according to the adjustment information.
And after the air conditioner acquires the adjustment information, a system controller in the air conditioner executes corresponding adjustment information, namely, the running frequency of the compressor and the rotating speed of the indoor fan are controlled. For example, in the cooling mode, when the adjustment information is the speed reduction information, the system controller reduces the rotation speed of the indoor fan to adjust the amount of cold air delivered to the room.
In another embodiment of the present application, adjusting the compressor operation frequency and/or the indoor fan rotation speed according to the first target temperature difference value and the operation parameter of the air conditioner includes:
comparing the first target temperature difference value with a preset first temperature value to obtain a first comparison result;
because the first target temperature difference value of the air conditioner is different in the cooling mode and the heating mode, the first temperature value can be directly set by a user according to the air conditioner temperature set value and the current first indoor environment temperature value, or can be set as a default value in a system controller of the air conditioner in advance. And comparing the first target temperature difference value with a preset first temperature value to judge whether the current indoor environment temperature value is close to the air conditioner temperature set value or not to obtain a first comparison result, wherein the first comparison result comprises that the first target temperature difference value is greater than or equal to the first temperature value and the first target temperature difference value is smaller than the first temperature value.
In the air-conditioning heating mode or the air-conditioning cooling mode, if the first comparison result is that the first target temperature difference value is greater than or equal to the first temperature value, it indicates that the current indoor environment temperature does not reach the air-conditioning temperature set value, the compressor and the fan need to be continuously maintained to operate so as to reduce or increase the current indoor environment temperature, the adjustment information is determined to be maintenance information, and the maintenance information indicates the air conditioner to maintain the current operation frequency of the compressor and the current rotation speed of the indoor fan unchanged.
Illustratively, as shown in fig. 3 and 4, the air conditioner temperature setting value is set to T Set temperature The first indoor environment temperature value is set as T Inner ring temperature 1 If the first target temperature difference value is T Inner ring temperature 1 -T Set temperature Or T Set temperature -T Inner ring temperature 1 In this embodiment, the first target temperature difference value adopted in the cooling mode is T Inner ring temperature 1 -T Set temperature And the first target temperature difference value adopted in the heating mode is T Set temperature -T Inner ring temperature 1 。
Setting the first temperature value as delta T1, comparing the first target temperature difference value with a preset first temperature value, and obtaining a first comparison result which can be T in the refrigeration mode Inner ring temperature 1 -T Set temperature Not less than Delta T1 or T Inner ring temperature 1 -T Set temperature <Δ T1, in the heating mode, the first comparison result may be T Set temperature -T Inner ring temperature 1 Not less than Delta T1 or T Set temperature -T Inner ring temperature 1 <ΔT1。
Therefore, in the air-conditioning heating mode or the air-conditioning cooling mode, if the first comparison result is T Inner ring temperature 1 -T Set temperature Not less than Delta T1 or T Set temperature -T Inner ring temperature 1 And when the current rotating speed of the indoor fan is larger than or equal to delta T1, determining that the adjusting information is maintenance information, and indicating the air conditioner to maintain the current operating frequency of the compressor and the current rotating speed of the indoor fan unchanged by the maintenance information.
In another embodiment of the present application, the adjusting the operating frequency of the compressor and/or the rotating speed of the indoor fan according to the first target temperature difference value and the operating parameter of the air conditioner further comprises:
in the air conditioner refrigeration mode, if the first comparison result shows that the first target temperature difference value is smaller than the first temperature value, the current indoor environment temperature is close to the air conditioner temperature set value, the cooling effect can be relieved by reducing the running frequency of the compressor, and correspondingly, the adjustment information is determined to be frequency reduction information which indicates that the air conditioner reduces the running frequency of the compressor.
Illustratively, as shown in fig. 3, in the cooling mode, when the first comparison result is T Inner ring temperature 1 -T Set temperature <And when the delta T1 is obtained, determining that the adjusting information is frequency reduction information, and indicating the air conditioner to reduce the running frequency of the compressor by the frequency reduction information.
In another embodiment of the present application, as shown in fig. 5, the adjusting the operating frequency of the compressor and/or the rotating speed of the indoor fan according to the first target temperature difference value and the operating parameter of the air conditioner further includes the following steps 301 to 303:
301, acquiring a current second indoor environment temperature value;
and when the first comparison result shows that the first target temperature difference value is smaller than the first temperature value and the compressor reduces the frequency, continuously detecting the current indoor environment temperature through an indoor temperature sensor in the air conditioner, continuously judging whether the current indoor environment temperature value reaches an indoor temperature set value or not, and further obtaining a second indoor environment temperature value.
Step 302, determining a second target temperature difference value according to the air conditioner temperature set value and a second indoor environment temperature value;
the second target temperature difference value is a difference value between the air conditioner temperature set value and a second indoor environment temperature value, and the second target temperature difference value is convenient for a system controller in the air conditioner to judge whether the indoor environment temperature of the current environment is closer to or reaches the air conditioner temperature set value or not, so that the operating parameters of the air conditioner are controlled. For example, when the air conditioner operation mode set by the user is the cooling mode and the air conditioner temperature setting value is 26 degrees, the second indoor environment temperature value is 26.5 degrees, and the corresponding second target temperature difference value is 0.5 degrees.
Step 303, comparing the second target temperature difference value with a preset second temperature value to obtain a second comparison result;
in the cooling mode, the second temperature value may be directly set by a user according to the air conditioner temperature setting value and the current second indoor environment temperature value, or may be set as a default value in a system controller of the air conditioner in advance. And comparing the second target temperature difference value with a preset second temperature value to judge whether the current indoor environment temperature value is close to the set value of the air conditioner temperature to obtain a second comparison result, wherein the second comparison result comprises that the second target temperature difference value is equal to the second temperature value, and the second target temperature difference value is not equal to the second temperature value.
Illustratively, in the cooling mode, as shown in fig. 3, the second indoor ambient temperature value is set to T Inner ring temperature 2 If the first target temperature difference value is T Inner ring temperature 2 -T Set temperature The second target temperature difference value is T Inner ring temperature 2 -T Set temperature Setting the first temperature value as delta T2, comparing the second target temperature difference value with a preset second temperature value, and obtaining a second comparison result which can be T in the refrigeration mode Inner ring temperature 2 -T Set temperature = Δ T2 or T Inner ring temperature 2 -T Set temperature ≠ΔT2。
In the cooling mode, if the second comparison result is that the second target temperature difference value is equal to the second temperature value, the current indoor environment temperature is indicated to reach the set value of the air conditioner temperature, the adjustment information is determined to be maintenance information, and the maintenance information indicates the air conditioner to maintain the current operation frequency of the compressor and the current rotating speed of the indoor fan unchanged;
if the second comparison result is that the second target temperature difference value is not equal to the second temperature value, the second comparison result includes two cases:
the first is that the second comparison result is that the second target temperature difference value is greater than the second temperature value, when the second target temperature difference value is greater than the second temperature value, it indicates that the current indoor environment temperature is higher than the air conditioner temperature set value, the compressor operation frequency needs to be increased, the refrigeration effect is enhanced, that is, the adjustment information is determined to be the frequency increasing information, and the frequency increasing information indicates the air conditioner to increase the compressor operation frequency;
the second comparison result is that the second target temperature difference value is smaller than the second temperature value, when the second target temperature difference value is smaller than the second temperature value, it indicates that the current indoor environment temperature is lower than the air conditioner temperature set value, the compressor operation frequency needs to be reduced, the refrigeration effect is slowed down, that is, the adjustment information is the frequency reduction information, and the frequency reduction information indicates the air conditioner to reduce the compressor operation frequency.
Illustratively, as shown in FIG. 3, if the second comparison result is T Inner ring temperature 2 -T Set temperature If the adjustment information is not less than the preset value, determining that the adjustment information is maintenance information, and indicating the air conditioner to maintain the current running frequency of the compressor and the current rotating speed of the indoor fan unchanged by the maintenance information;
if the second comparison result is T Inner ring temperature 2 -T Set temperature Not equal to Δ T2 and T Inner ring temperature 2 -T Set temperature >Delta T2, determining the adjustment information as frequency-increasing information, wherein the frequency-increasing information indicates the air conditioner to increase the running frequency of the compressor; if the second comparison result is T Inner ring temperature 2 -T Set temperature Not equal to Δ T2 and T Inner ring temperature 2 -T Set temperature <And delta T2, determining that the adjusting information is frequency reduction information, and indicating the air conditioner to reduce the running frequency of the compressor by the frequency reduction information.
In another embodiment of the present application, the adjusting the operating frequency of the compressor and/or the rotating speed of the indoor fan according to the first target temperature difference value and the operating parameter of the air conditioner further includes:
comparing the current operating frequency value of the compressor with a preset lowest compressor threshold value to obtain a comparison result of the operating frequency of the compressor;
when the second comparison result is the second result, that is, when the second comparison result is that the second target temperature difference value is smaller than the second temperature value, the operating frequency of the compressor needs to be decreased, and in order to determine whether the current operating frequency of the compressor is the lowest frequency before the frequency down is performed. The preset lowest threshold of the compressor may be set directly by a user, or may be set as a default of the lowest threshold of the compressor in advance in a system controller of the air conditioner. The comparison result of the compressor running frequency comprises that the current running frequency value of the compressor is greater than a preset compressor lowest threshold value and the current running frequency value of the compressor is less than or equal to the preset compressor lowest threshold value.
As shown in fig. 3, in the air-conditioning refrigeration mode, if the comparison result of the operating frequency of the compressor is that the current operating frequency value of the compressor is greater than the preset lowest threshold value of the compressor, it is determined that the adjustment information is frequency reduction information, and the frequency reduction information indicates that the air conditioner reduces the operating frequency of the compressor;
and if the comparison result of the running frequency of the compressor is that the current running frequency value of the compressor is smaller than or equal to the preset lowest threshold value of the compressor, determining the adjustment information as maintenance information and speed reduction information, wherein the maintenance information indicates the air conditioner to maintain the current running frequency of the compressor unchanged, and the speed reduction information indicates the air conditioner to reduce the current rotating speed of the indoor fan. When the running frequency of the compressor is the lowest frequency, the air quantity conveyed to the current indoor environment is reduced by reducing the current rotating speed of the indoor fan, so that the current indoor environment temperature is increased.
In another embodiment of the present application, as shown in fig. 6, the adjusting the operating frequency of the compressor and/or the rotating speed of the indoor fan according to the first target temperature difference value and the operating parameter of the air conditioner further includes steps 401 to 402:
step 401, in an air-conditioning heating mode, if a first comparison result is that a first target temperature difference value is smaller than a first temperature value, acquiring a first inner tube temperature value;
in the air-conditioning heating mode, if the first comparison result shows that the first target temperature difference value is smaller than the first temperature value, it indicates that the current indoor environment temperature value is close to the air-conditioning set temperature value, and the heat output to the current indoor environment needs to be reduced. In the heating mode, the heat output power can be reduced by reducing the running frequency of the compressor, and the heat output to the current room can be reduced by the rotating speed of the indoor fan when the temperature of the inner pipe of the heat exchanger meets the heat condition. In this embodiment, if the first comparison result is that the first target temperature difference value is smaller than the first temperature value, the first inner tube temperature value is obtained, that is, when the first comparison result is that the first target temperature difference value is smaller than the first temperature value, whether the temperature of the inner tube of the heat exchanger meets the heat condition is determined, and the temperature of the inner tube of the heat exchanger is detected by the inner tube temperature sensor, so that the first inner tube temperature value is obtained.
Step 402, comparing the first inner tube temperature value with a preset first inner tube temperature threshold value to obtain a first inner tube temperature comparison result;
in the heating mode, the first inner tube temperature threshold may be set directly by a user, or may be set as a default value of the first inner tube temperature threshold in advance in a system controller of the air conditioner. And comparing the first inner tube temperature value with a preset first inner tube temperature threshold value to judge whether the current temperature of the inner tube of the heat exchanger is close to the preset first inner tube temperature threshold value or not, and obtaining a first inner tube temperature comparison result, wherein the first inner tube temperature comparison result comprises that the first inner tube temperature value is greater than or equal to the first inner tube temperature threshold value, and the first inner tube temperature value is less than the first inner tube temperature threshold value.
In the heating mode, if the temperature value of the first inner tube is larger than or equal to the temperature threshold value of the first inner tube as a result of the temperature comparison of the first inner tube, the current indoor environment is close to the indoor temperature set value, and the current tube temperature of the inner tube of the heat exchanger is too high, the tube temperature needs to be reduced to reduce the heat transmitted to the current indoor environment;
if the first inner pipe temperature comparison result shows that the first inner pipe temperature value is smaller than the first inner pipe temperature threshold value, the current indoor environment is close to the indoor temperature set value, and when the current pipe temperature of the inner pipe of the heat exchanger is too low, the output air quantity at each moment needs to be reduced, and the indoor fan is prevented from blowing cold air towards the current indoor environment, so that the current rotating speed of the indoor fan needs to be reduced, the corresponding determined adjustment information is speed reduction information, and the speed reduction information indicates the air conditioner to reduce the current rotating speed of the indoor fan.
Exemplarily, as shown in fig. 4, in the heating mode, when the first comparison result is T Set temperature -T Inner ring temperature 1 <When the temperature is delta T1, the temperature of the inner tube of the heat exchanger is judged, and the temperature value of the first inner tube is set as T in the embodiment Temperature of inner tube1 Setting the temperature threshold of the first inner tube as T Inner tube threshold 1 If the temperature comparison result of the first inner tube is T Inner tube temperature 1 ≥T Inner tube threshold 1 Determining that the adjustment information is frequency reduction information, wherein the frequency reduction information indicates the air conditioner to reduce the running frequency of the compressor; if the first inner tube temperature comparison result is T Inner tube temperature 1 <T Inner tube threshold 1 And when the indoor fan is in the normal state, determining that the adjustment information is speed reduction information, and indicating the air conditioner to reduce the current rotating speed of the indoor fan by the speed reduction information.
In another embodiment of the present application, as shown in fig. 7, the adjusting the operating frequency of the compressor and/or the rotating speed of the indoor fan according to the first target temperature difference value and the operating parameter of the air conditioner further includes the following steps 501 to 503:
step 501, acquiring a current ambient temperature value in the third room;
in the heating mode, when the indoor environment temperature value in the current room is close to the set temperature value of the air conditioner and the heat output to the current room is reduced, the indoor environment temperature is continuously detected through the indoor temperature sensor to obtain the indoor environment temperature value in the current room.
Step 502, determining a third target temperature difference value according to the air conditioner temperature set value and the third indoor environment temperature value;
the third target temperature difference value is the difference value between the air conditioner temperature set value and the third indoor environment temperature value, and the system controller in the air conditioner can conveniently judge whether the indoor environment temperature of the current environment is closer to or reaches the air conditioner temperature set value through the third target temperature difference value, so that the operation parameters of the air conditioner are controlled. For example, when the air conditioner operation mode set by the user is the heating mode and the air conditioner temperature setting value is 30 degrees, the ambient temperature value in the third room is 28 degrees, and the corresponding third target temperature difference value is 2 degrees.
Step 503, comparing the third target temperature difference value with a preset third temperature value to obtain a third comparison result;
in the heating mode, the third temperature value may be directly set by a user according to the air conditioner temperature setting value and the current ambient temperature value in the third room, or may be set as a default value in a system controller of the air conditioner in advance. And comparing the third target temperature difference value with a preset third temperature value to judge whether the current indoor environment temperature value is close to the set air conditioner temperature value or not to obtain a third comparison result, wherein the third comparison result comprises that the third target temperature difference value is smaller than or equal to the third temperature value, and the third target temperature difference value is larger than the third temperature value.
For example, as shown in fig. 4, in the heating mode, the ambient temperature value in the third chamber is set to T Inner ring temperature 3 If the third target temperature difference value is T Set temperature -T Inner ring temperature 3 Setting the first temperature value as Δ T3, comparing the third target temperature difference value with a preset third temperature value, and obtaining a third comparison result T in the heating mode Set temperature -T Inner ring temperature 3 Less than or equal to delta T3 or T Set temperature -T Inner ring temperature 3 >ΔT3。
In the air-conditioning heating mode, if the third comparison result is that the third target temperature difference value is smaller than or equal to a third temperature value, and the first inner pipe temperature comparison result is that the first inner pipe temperature value is larger than or equal to a first inner pipe temperature threshold value, it indicates that the current indoor environment reaches the indoor temperature set value, and the current pipe temperature of the inner pipe of the heat exchanger is higher, the air-conditioning heating system continues to operate at the current frequency and continues to provide heat for the indoor environment, the corresponding determined adjustment information is maintenance information, and the maintenance information indicates that the air-conditioning heating system maintains the current operation frequency of the compressor and the current rotating speed of the indoor fan unchanged;
and if the third comparison result is that the third target temperature difference value is greater than the third temperature value and the first inner pipe temperature comparison result is that the first inner pipe temperature value is less than the first inner pipe temperature threshold value, determining that the adjustment information is the frequency increasing information and maintaining the information to indicate the air conditioner to increase the running frequency of the compressor.
Exemplarily, as shown in fig. 4, in the heating mode, if the third comparison result is T Set temperature -T Inner ring temperature 3 Δ T3 or less, and T Inner tube temperature 1 ≥T Inner tube threshold 1 When the adjustment information is determined to be the maintaining information, the maintaining information indicates the air conditioner to maintain the current running frequency of the compressorThe current rotating speed of the indoor fan is unchanged;
if the third comparison result is T Set temperature -T Inner ring temperature 3 >Δ T3, and the first inner tube temperature comparison result is T Inner tube temperature 1 <T Inner tube threshold 1 And determining that the adjusting information is the frequency increasing information, and maintaining the information to instruct the air conditioner to increase the running frequency of the compressor.
In another embodiment of the present application, as shown in fig. 8, the adjusting the operating frequency of the compressor and/or the rotating speed of the indoor fan according to the first target temperature difference value and the operating parameter of the air conditioner further includes the following steps 601 to 602:
step 601, obtaining a temperature value of a second inner tube;
and when the third comparison result is that the third target temperature difference value is greater than the third temperature value, the first inner pipe temperature comparison result is that the first inner pipe temperature value is less than the first inner pipe temperature threshold value, and after the air conditioner has promoted the running frequency of the compressor, the current temperature of the inner pipe of the heat exchanger is continuously detected through the inner pipe temperature sensor, so that the second inner pipe temperature value is obtained.
Step 602, comparing the temperature value of the second inner tube with a preset temperature threshold value of the second inner tube to obtain a comparison result of the temperature of the second inner tube;
in the heating mode, the second inner tube temperature threshold may be set directly by a user, or may be set as a default value of the second inner tube temperature threshold in advance in a system controller of the air conditioner. And comparing the second inner tube temperature value with a preset second inner tube temperature threshold value to judge whether the current temperature of the inner tube of the heat exchanger is close to the preset second inner tube temperature threshold value or not to obtain a second inner tube temperature comparison result, wherein the second inner tube temperature comparison result comprises that the second inner tube temperature value is less than or equal to the second inner tube temperature threshold value, and the second inner tube temperature value is greater than the second inner tube temperature threshold value.
In the air-conditioning heating mode, if the temperature comparison result of the second inner pipe is that the temperature value of the second inner pipe is less than or equal to the temperature threshold value of the second inner pipe, the situation that the current indoor environment reaches the indoor temperature set value and the pipe temperature of the current inner pipe of the heat exchanger is very low is indicated, the air speed needs to be reduced, the indoor fan is prevented from blowing cold air towards the indoor environment, the corresponding determined adjustment information is speed reduction information, and the speed reduction information indicates that the air conditioner reduces the current rotating speed of the indoor fan;
if the second inner pipe temperature comparison result shows that the second inner pipe temperature value is larger than the second inner pipe temperature threshold value, the current pipe temperature of the inner pipe of the heat exchanger is not the lowest temperature, therefore, the air speed can be increased to improve the amount of hot air blown to the current indoor by the indoor fan, the corresponding determined adjustment information is acceleration information, the acceleration information indicates the air conditioner to increase the current rotating speed of the indoor fan, the current indoor environment temperature and the temperature of the inner pipe of the heat exchanger are detected in real time, the operating frequency of the compressor and the current rotating speed of the indoor fan are finely adjusted according to the current indoor environment temperature and the temperature of the inner pipe of the heat exchanger, the current indoor environment temperature is balanced, the shutdown phenomenon of the compressor is reduced, and energy is saved.
Exemplarily, as shown in fig. 4, in the heating mode, the temperature value of the second inner tube is set as T in the present embodiment Inner tube temperature 2 Setting the temperature threshold of the first inner tube as T Inner tube threshold 2 If the temperature comparison result of the first inner tube is T Inner tube temperature 2 ≤T Inner tube threshold 2 When the indoor fan is in a normal state, the adjustment information is determined to be speed reduction information, and the speed reduction information indicates the air conditioner to reduce the current rotating speed of the indoor fan; if the temperature comparison result of the first inner tube is T Inner tube temperature 2 >T Inner tube threshold 2 And determining that the adjustment information is acceleration information, wherein the acceleration information indicates the current rotating speed of the indoor fan of the air conditioner.
In another embodiment of the present application, as shown in fig. 9, adjusting the operating frequency of the compressor and/or the rotational speed of the indoor fan according to the first target temperature difference value and the operating parameter of the air conditioner includes the following steps 701 to 702:
step 701, obtaining an adjustment information instruction;
the air conditioner is internally provided with a signal receiving module, a user can send an adjusting information instruction signal to the air conditioner through the remote control device in the running process of the air conditioner, and the signal receiving module of the air conditioner acquires the adjusting information instruction signal.
And step 702, acquiring the adjustment information of the compressor and the indoor fan according to the adjustment direction instruction.
After the adjustment information instruction signal is obtained, the system controller of the air conditioner obtains a corresponding adjustment direction according to the adjustment direction instruction, and adjusts the current operating frequency of a compressor of the air conditioner and the rotating speed of an indoor fan according to the adjustment direction, so that the operating parameters of the air conditioner can be manually adjusted and controlled by a user.
In order to better implement the accurate temperature control method of the air conditioner in the embodiment of the present application, on the basis of the accurate temperature control method of the air conditioner, an embodiment of the present application further provides an accurate temperature control device of the air conditioner, as shown in fig. 10, the accurate temperature control device 800 of the air conditioner includes:
a first temperature obtaining module 801, configured to obtain an air conditioner temperature setting value and a current first indoor environment temperature value;
a first target temperature difference value determining module 802, configured to determine a first target temperature difference value according to the air conditioner temperature setting value and the first indoor environment temperature value;
an air conditioner operation parameter obtaining module 803, configured to obtain operation parameters of an air conditioner, where the operation parameters of the air conditioner include current operation frequency information of a compressor of the air conditioner or current temperature information of an inner tube of a heat exchanger of the air conditioner;
and the air conditioner operation adjusting module 804 is used for adjusting the operation frequency of the compressor and/or the rotation speed of the indoor fan according to the first target temperature difference value and the operation parameter of the air conditioner.
The air conditioner operation parameter obtaining module 803 includes:
the interval period setting module is used for acquiring an interval period for determining the related information of the air conditioner;
the method is used for acquiring the current running frequency information of the compressor of the air conditioner and the current temperature information of the inner pipe of the heat exchanger of the air conditioner at least once in an interval period.
The air conditioner operation adjusting module 804 includes:
the adjustment information determining module is used for determining the adjustment information of the compressor and the indoor fan according to the target temperature difference value information, the current running frequency information of the compressor and the current temperature information of the inner pipe of the heat exchanger;
and the adjustment information execution module adjusts the running frequency of the compressor and the rotating speed of the indoor fan according to the adjustment information.
The air conditioner operation adjusting module 804 includes:
the first target temperature difference value comparison module is used for comparing the first target temperature difference value with a preset first temperature value to obtain a first comparison result;
the air conditioner operation adjusting module 804 is specifically configured to:
and under the air conditioner heating mode or the air conditioner refrigerating mode, if the first comparison result shows that the first target temperature difference value is greater than or equal to the first temperature value, determining the adjustment information as maintenance information, and indicating the air conditioner to maintain the current operation frequency of the compressor and the current rotating speed of the indoor fan unchanged by the maintenance information.
The air conditioner operation adjusting module 804 is specifically configured to:
and under the air conditioner refrigeration mode, if the first comparison result shows that the first target temperature difference value is smaller than the first temperature value, determining that the adjustment information is frequency reduction information, and indicating the air conditioner to reduce the running frequency of the compressor by the frequency reduction information.
The air conditioner operation adjusting module 804 includes:
the second temperature acquisition module is used for acquiring a current second indoor environment temperature value;
the second target temperature difference value determining module is used for determining a second target temperature difference value according to the air conditioner temperature set value and a second indoor environment temperature value;
the second target temperature difference value comparison module is used for comparing the second target temperature difference value with a preset second temperature value to obtain a second comparison result;
the air conditioner operation adjusting module 804 is specifically configured to:
in the air conditioner refrigeration mode, if the second comparison result is that the second target temperature difference value is equal to the second temperature value, determining the adjustment information as maintenance information, and indicating the air conditioner to maintain the current operation frequency of the compressor and the current rotating speed of the indoor fan unchanged by the maintenance information;
and if the second comparison result is that the second target temperature difference value is not equal to the second temperature value, determining that the adjustment information is the frequency increasing information, and indicating the air conditioner to increase the running frequency of the compressor by the frequency increasing information.
The air conditioner operation adjusting module 804 includes:
the compressor running frequency comparison module is used for comparing the current running frequency value of the compressor with a preset compressor lowest threshold value to obtain a compressor running frequency comparison result;
the air conditioner operation adjusting module 804 is specifically configured to:
in the air conditioner refrigeration mode, if the operation frequency comparison result of the compressor is that the current operation frequency value of the compressor is greater than a preset compressor lowest threshold value, determining that the adjustment information is frequency reduction information, and indicating the air conditioner to reduce the operation frequency of the compressor by the frequency reduction information;
and if the comparison result of the running frequency of the compressor is that the current running frequency value of the compressor is smaller than or equal to the preset lowest threshold value of the compressor, determining the adjustment information as maintenance information and speed reduction information, wherein the maintenance information indicates the air conditioner to maintain the current running frequency of the compressor unchanged, and the speed reduction information indicates the air conditioner to reduce the current rotating speed of the indoor fan.
The air conditioner operation adjusting module 804 includes:
the first inner tube temperature acquisition module is used for acquiring a first inner tube temperature value;
the first inner tube temperature comparison module is used for comparing the first inner tube temperature value with a preset first inner tube temperature threshold value to obtain a first inner tube temperature comparison result;
the air conditioner operation adjusting module 804 is specifically configured to:
in the heating mode of the air conditioner, if the temperature comparison result of the first inner tube is that the temperature value of the first inner tube is larger than or equal to the temperature threshold value of the first inner tube, determining that the adjustment information is frequency reduction information, and indicating the air conditioner to reduce the running frequency of the compressor by the frequency reduction information;
and if the comparison result of the first inner pipe temperature is that the first inner pipe temperature value is smaller than the first inner pipe temperature threshold value, determining that the adjustment information is speed reduction information, and indicating the air conditioner to reduce the current rotating speed of the indoor fan by the speed reduction information.
The air conditioner operation adjusting module 804 includes:
the third temperature acquisition module is used for acquiring the current ambient temperature value in the third chamber;
the third target temperature difference value determining module is used for determining a third target temperature difference value according to the air conditioner temperature set value and the third indoor environment temperature value;
the third target temperature difference value comparison module is used for comparing the third target temperature difference value with a preset third temperature value to obtain a third comparison result;
the air conditioner operation adjusting module 804 is specifically configured to:
in the air-conditioning heating mode, if the third comparison result is that the third target temperature difference value is smaller than or equal to a third temperature value and the first inner pipe temperature comparison result is that the first inner pipe temperature value is larger than or equal to a first inner pipe temperature threshold value, determining that the adjustment information is maintenance information, and indicating that the air conditioner maintains the current operating frequency of the compressor and the current rotating speed of the indoor fan unchanged by the maintenance information;
and if the third comparison result is that the third target temperature difference value is greater than the third temperature value and the first inner tube temperature comparison result is that the first inner tube temperature value is smaller than the first inner tube temperature threshold value, determining that the adjustment information is the frequency increasing information, and maintaining the information to indicate the air conditioner to increase the operation frequency of the compressor.
The air conditioner operation adjusting module 804 includes:
the second inner tube temperature acquisition module is used for acquiring a second inner tube temperature value;
the second inner tube temperature comparison module is used for comparing the second inner tube temperature value with a preset second inner tube temperature threshold value to obtain a second inner tube temperature comparison result;
the air conditioner operation adjusting module 804 is specifically configured to:
in the air-conditioning heating mode, if the temperature comparison result of the second inner pipe is that the temperature value of the second inner pipe is smaller than or equal to the temperature threshold value of the second inner pipe, determining that the adjustment information is speed reduction information, and indicating the air conditioner to reduce the current rotating speed of the indoor fan by the speed reduction information;
and if the comparison result of the temperature of the second inner pipe is that the temperature value of the second inner pipe is greater than the temperature threshold value of the second inner pipe, determining that the adjustment information is acceleration information, and indicating the current rotating speed of the indoor fan of the air conditioner to be increased by the acceleration information.
The air conditioner operation adjusting module 804 includes:
the adjusting instruction acquisition module is used for acquiring an adjusting information instruction;
and the adjusting instruction execution module is used for acquiring the adjusting information of the compressor and the indoor fan according to the adjusting direction instruction.
On the other hand, the present application further provides an air conditioner, as shown in fig. 11, the air conditioner includes a compressor 901, an indoor fan 902, a heat exchanger inner tube 903, an indoor temperature sensor 904, an inner tube temperature sensor 905 and a system controller 906, and the air conditioner adopts an accurate temperature control method of the air conditioner or has an accurate temperature control device of the air conditioner. The air conditioner comprises a compressor 901, a device for lifting low-pressure gas into high-pressure gas in the air conditioner, an indoor fan 902 for blowing air towards the current indoor, a heat exchanger inner pipe 903 which is a pipeline for the circulation of refrigerant of the air conditioner, an indoor temperature sensor 904 for detecting the indoor environment temperature of the current indoor, an inner pipe temperature sensor 905 for detecting the temperature of the heat exchanger inner pipe 903, the indoor temperature sensor 904 and the inner pipe temperature sensor 905 which are both arranged in the air conditioner, a system controller 906 which is electrically connected with the indoor temperature sensor 904 and the inner pipe temperature sensor 905, the system controller 906 which is a control center of the air conditioner, various interfaces and lines which are used for connecting all parts of the whole electronic device, and the electronic device is integrally monitored by operating or executing software programs and/or modules stored in a memory and calling data stored in the memory to execute various functions and process data of the air conditioner. Optionally, the system controller 906 may include one or more processing cores; the system controller 906 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like and preferably the system controller 906 may integrate an application processor, which handles primarily the operating system, user interfaces, application programs, etc., and a modem processor, which handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated into the system controller 906.
The method, the device and the air conditioner for accurately controlling the temperature of the air conditioner provided by the embodiment of the application are described in detail, a specific example is applied in the description to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for those skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed, and in summary, the content of the present specification should not be construed as limiting the present invention.

Claims (9)

1. An accurate temperature control method of an air conditioner is characterized by comprising the following steps:
acquiring an air conditioner temperature set value and a current first indoor environment temperature value;
determining a first target temperature difference value according to the air conditioner temperature set value and the first indoor environment temperature value;
acquiring the operating parameters of the air conditioner, wherein the operating parameters of the air conditioner comprise the current operating frequency information of a compressor of the air conditioner or the current temperature information of an inner tube of a heat exchanger of the air conditioner;
acquiring an interval period for determining air conditioner related information;
in the interval period, at least once acquiring current running frequency information of a compressor of the air conditioner and current temperature information of an inner pipe of a heat exchanger of the air conditioner;
adjusting the operation frequency of the compressor and/or the rotation speed of the indoor fan according to the first target temperature difference value and the operation parameters of the air conditioner;
comparing the first target temperature difference value with a preset first temperature value to obtain a first comparison result;
acquiring a second target temperature difference value, wherein the second target temperature difference value is the difference value between the air conditioner temperature set value and a second indoor environment temperature value;
comparing the second target temperature difference value with a preset second temperature value to obtain a second comparison result;
in an air-conditioning refrigeration mode, if the second comparison result indicates that the second target temperature difference value is not equal to the second temperature value, the method specifically includes: if the second comparison result is that the second target temperature difference value is greater than the second temperature value, determining that the adjustment information is frequency-increasing information, wherein the frequency-increasing information indicates that the air conditioner increases the running frequency of the compressor, and if the second comparison result is that the second target temperature difference value is less than the second temperature value, determining that the adjustment information is frequency-reducing information, and the frequency-reducing information indicates that the air conditioner reduces the running frequency of the compressor; in an air-conditioning heating mode, if the first comparison result shows that the first target temperature difference value is smaller than the first temperature value, acquiring a first inner tube temperature value;
comparing the first inner tube temperature value with a preset first inner tube temperature threshold value to obtain a first inner tube temperature comparison result;
if the first inner tube temperature comparison result shows that the first inner tube temperature value is greater than or equal to the first inner tube temperature threshold value, determining that the adjustment information is frequency reduction information, and indicating the air conditioner to reduce the running frequency of the compressor by the frequency reduction information;
if the first inner pipe temperature comparison result shows that the first inner pipe temperature value is smaller than the first inner pipe temperature threshold value, determining that the adjustment information is speed reduction information, and indicating the air conditioner to reduce the current rotating speed of the indoor fan by the speed reduction information;
acquiring a current third indoor environment temperature value after the first inner pipe temperature comparison result shows that the first inner pipe temperature value is greater than or equal to the first inner pipe temperature threshold value and the air conditioner reduces the operation frequency of the compressor;
determining a third target temperature difference value according to the air conditioner temperature set value and the third indoor environment temperature value;
comparing the third target temperature difference value with a preset third temperature value to obtain a third comparison result;
in an air conditioner heating mode, if the third comparison result is that the third target temperature difference value is smaller than or equal to the third temperature value and the first inner pipe temperature comparison result is that the first inner pipe temperature value is larger than or equal to the first inner pipe temperature threshold value, determining that the adjustment information is maintenance information, and the maintenance information indicates that the air conditioner maintains the current operation frequency of the compressor and the current rotating speed of the indoor fan unchanged;
if the third comparison result is that the third target temperature difference value is greater than the third temperature value and the first inner tube temperature comparison result is that the first inner tube temperature value is smaller than the first inner tube temperature threshold value, determining that the adjustment information is frequency-increasing information, and indicating the air conditioner to increase the running frequency of the compressor by the frequency-increasing information;
acquiring a second inner pipe temperature value when the third comparison result shows that the third target temperature difference value is greater than the third temperature value, the first inner pipe temperature comparison result shows that the first inner pipe temperature value is less than the first inner pipe temperature threshold value, and the air conditioner has promoted the operation frequency of the compressor;
comparing the second inner tube temperature value with a preset second inner tube temperature threshold value to obtain a second inner tube temperature comparison result;
in an air conditioner heating mode, if the second inner tube temperature comparison result shows that the second inner tube temperature value is smaller than or equal to the second inner tube temperature threshold value, determining that the adjustment information is speed reduction information, and indicating that the air conditioner reduces the current rotating speed of the indoor fan by the speed reduction information;
and if the second inner pipe temperature comparison result shows that the second inner pipe temperature value is greater than the second inner pipe temperature threshold value, determining that the adjustment information is acceleration information, and indicating the air conditioner to increase the current rotating speed of the indoor fan by the acceleration information.
2. The method of claim 1, wherein the adjusting the operating frequency of the compressor and the rotating speed of the indoor fan according to the target temperature difference information, the current operating frequency information of the compressor, and the current temperature information of the inner tube of the heat exchanger comprises:
determining the adjustment information of the compressor and the indoor fan according to the target temperature difference value information, the current running frequency information of the compressor and the current temperature information of the inner tube of the heat exchanger;
and adjusting the running frequency of the compressor and the rotating speed of the indoor fan according to the adjustment information.
3. The method of claim 2, wherein the adjusting the operating frequency of the compressor and/or the rotating speed of the indoor fan according to the first target temperature difference value and the operating parameter of the air conditioner comprises: and in an air conditioner heating mode or an air conditioner refrigerating mode, if the first comparison result is that the first target temperature difference value is greater than or equal to the first temperature value, determining that the adjustment information is maintenance information, wherein the maintenance information indicates that the air conditioner maintains the current operating frequency of the compressor and the current rotating speed of the indoor fan unchanged.
4. The method of claim 3, wherein the adjusting the operating frequency of the compressor and/or the rotating speed of the indoor fan according to the first target temperature difference value and the operating parameter of the air conditioner further comprises:
in a cooling mode of the air conditioner, if the first comparison result shows that the first target temperature difference value is smaller than the first temperature value, determining that the adjustment information is frequency reduction information, and indicating that the air conditioner reduces the running frequency of the compressor by the frequency reduction information.
5. The method of claim 4, wherein the adjusting the operating frequency of the compressor and/or the rotating speed of the indoor fan according to the first target temperature difference value and the operating parameter of the air conditioner further comprises:
acquiring a current second indoor environment temperature value;
determining a second target temperature difference value according to the air conditioner temperature set value and the second indoor environment temperature value;
and under the air conditioner refrigeration mode, if the second comparison result shows that the second target temperature difference value is equal to the second temperature value, determining the adjustment information as maintenance information, wherein the maintenance information indicates that the air conditioner maintains the current running frequency of the compressor and the current rotating speed of the indoor fan unchanged.
6. The method of claim 5, wherein the adjusting the operating frequency of the compressor and/or the rotating speed of the indoor fan according to the first target temperature difference value and the operating parameter of the air conditioner further comprises:
comparing the current operating frequency value of the compressor with a preset lowest threshold value of the compressor to obtain a comparison result of the operating frequency of the compressor;
in the air conditioner refrigeration mode, if the operation frequency comparison result of the compressor is that the current operation frequency value of the compressor is greater than the preset lowest threshold value of the compressor, determining that the adjustment information is frequency reduction information, and indicating that the air conditioner reduces the operation frequency of the compressor by the frequency reduction information;
and if the comparison result of the running frequency of the compressor is that the current running frequency value of the compressor is smaller than or equal to the preset lowest threshold value of the compressor, determining the adjustment information as maintenance information and speed reduction information, wherein the maintenance information indicates that the air conditioner maintains the current running frequency of the compressor unchanged, and the speed reduction information indicates that the air conditioner reduces the current rotating speed of the indoor fan.
7. The method for accurately controlling temperature of an air conditioner according to claim 2, wherein said adjusting the operation frequency of the compressor and/or the rotation speed of the indoor fan according to the first target temperature difference value and the operation parameter of the air conditioner comprises:
acquiring the adjustment information instruction;
and acquiring the adjustment information of the compressor and the indoor fan according to the adjustment information instruction.
8. An accurate temperature control apparatus for an air conditioner, which employs the accurate temperature control method for an air conditioner according to any one of claims 1 to 7, the apparatus comprising:
the first temperature acquisition module is used for acquiring an air conditioner temperature set value and a current first indoor environment temperature value;
the first target temperature difference value determining module is used for determining a first target temperature difference value according to the air conditioner temperature set value and the first indoor environment temperature value;
the air conditioner operation parameter acquisition module is used for acquiring operation parameters of the air conditioner, wherein the operation parameters of the air conditioner comprise current operation frequency information of a compressor of the air conditioner or current temperature information of an inner pipe of a heat exchanger of the air conditioner;
and the air conditioner operation adjusting module is used for adjusting the operation frequency of the compressor and/or the rotating speed of the indoor fan according to the first target temperature difference value and the operation parameters of the air conditioner.
9. An air conditioner, characterized in that the air conditioner comprises a compressor, an indoor fan, a heat exchanger inner pipe, an indoor temperature sensor, an inner pipe temperature sensor and a system controller, and the air conditioner adopts the accurate temperature control method of the air conditioner according to any one of claims 1 to 7 or has the accurate temperature control device of the air conditioner according to claim 8.
CN202110517284.1A 2021-05-12 2021-05-12 Accurate temperature control method and device of air conditioner and air conditioner Active CN113324325B (en)

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