CN113339961A - Control method and device of air conditioner, air conditioner and storage medium - Google Patents

Control method and device of air conditioner, air conditioner and storage medium Download PDF

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Publication number
CN113339961A
CN113339961A CN202110504705.7A CN202110504705A CN113339961A CN 113339961 A CN113339961 A CN 113339961A CN 202110504705 A CN202110504705 A CN 202110504705A CN 113339961 A CN113339961 A CN 113339961A
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CN
China
Prior art keywords
air conditioner
oil return
temperature
oil
return capillary
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110504705.7A
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Chinese (zh)
Inventor
代文杰
杜泽锋
其他发明人请求不公开姓名
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Guangdong TCL Intelligent HVAC Equipment Co Ltd
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Guangdong TCL Intelligent HVAC Equipment Co Ltd
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Publication date
Application filed by Guangdong TCL Intelligent HVAC Equipment Co Ltd filed Critical Guangdong TCL Intelligent HVAC Equipment Co Ltd
Priority to CN202110504705.7A priority Critical patent/CN113339961A/en
Publication of CN113339961A publication Critical patent/CN113339961A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/49Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/54Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61Control or safety arrangements characterised by user interfaces or communication using timers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/65Electronic processing for selecting an operating mode
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86Control 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00Control inputs relating to system states
    • F24F2140/20Heat-exchange fluid temperature

Abstract

The application provides a control method and a control device of an air conditioner, the air conditioner and a storage medium, wherein the control method of the air conditioner comprises the following steps: when the air conditioner meets a preset condition, detecting whether the oil return capillary tube is solidified or not; if the oil return capillary tube is solidified, closing an internal machine of the air conditioner according to a first preset time length; after the internal machine of the air conditioner is closed according to the first preset time, the internal machine of the air conditioner is opened according to the second preset time; and continuously detecting whether the oil return capillary tube is solidified or not until the result of detecting whether the oil return capillary tube is solidified or not is negative, and the air conditioner operates normally. This application can increase the pressure differential at oil return capillary both ends when the air conditioner moves for the resistance of refrigeration oil in the oil return capillary can be overcome to the pressure differential that increases, prevents that the inside refrigeration oil of oil return capillary from solidifying, thereby makes the refrigeration oil can return oil to the compressor, has improved the life of compressor.

Description

Control method and device of air conditioner, air conditioner and storage medium
Technical Field
The present disclosure relates to the field of air conditioners, and particularly to a method and an apparatus for controlling an air conditioner, and a storage medium.
Background
With the rapid development of the air conditioning industry, the air conditioning industry is upgraded for many times, and the requirement on reliability is higher and higher. For a multi-split air conditioner, the reliability of a compressor is an important component of the reliability of a whole system, particularly, in the process of ultralow-temperature heating and cold starting operation, the high-low pressure difference ratio is small in the initial starting stage, the flow resistance of an oil return capillary tube is obviously increased due to the fact that the viscosity of refrigeration oil is increased at low temperature, the differential pressure is not enough to overcome the flow resistance of the capillary tube at the moment, and the oil return capillary tube is frozen. The compressor is in an oil return failure state in the period, the oil return amount of the compressor is smaller than the oil discharge amount, the oil level of the compressor may be lower than the safety oil level, and the reliability of the compressor is low, so that the service life of the compressor is influenced.
Disclosure of Invention
The application provides a control method of air conditioner, when detecting the oil return capillary in the air conditioner and block up, through the inner machine of circulated, periodic closing air conditioner and the inner machine of opening the air conditioner for oil return capillary pressure differential increases, overcomes the resistance of refrigeration oil in the oil return capillary through the pressure differential that increases, makes under the condition that does not increase extra equipment, reaches the effect of mediation oil return capillary.
In one aspect, the present application provides a control method of an air conditioner including an oil return capillary for returning refrigeration oil, the control method including:
when the air conditioner meets a preset condition, detecting whether the oil return capillary tube is solidified or not;
if the oil return capillary tube is solidified, closing an internal machine of the air conditioner according to a first preset time length;
after the internal machine of the air conditioner is closed according to the first preset time, the internal machine of the air conditioner is opened according to the second preset time;
and continuously detecting whether the oil return capillary tube is solidified or not until the result of detecting whether the oil return capillary tube is solidified or not is negative, and the air conditioner operates normally.
In some embodiments of the present application, the air conditioner includes a heating mode, detecting whether the oil return capillary tube is solidified when the air conditioner satisfies a preset condition, including:
and when the air conditioner starts the heating mode, detecting whether the oil return capillary tube is solidified.
In some embodiments of the present application, before detecting whether the oil return capillary is solidified when the air conditioner satisfies a preset condition, the method further includes:
the air conditioner starts timing according to a third preset time length;
and after the air conditioner finishes timing, starting to detect whether the oil return capillary tube is solidified.
In some embodiments of the present application, the detecting whether the oil return capillary is solidified includes:
obtaining the temperature of the frozen oil in the oil return capillary;
acquiring the ambient temperature of an outdoor unit of the air conditioner;
if the temperature of the refrigeration oil is equal to the environmental temperature, determining that the oil return capillary tube is solidified;
and if the temperature of the refrigeration oil is not equal to the environmental temperature, determining that the oil return capillary tube is not solidified.
In some embodiments of the present application, the detecting whether the oil return capillary is solidified includes:
obtaining the temperature of the frozen oil in the oil return capillary;
acquiring the set top temperature of a compressor of the air conditioner;
if the difference between the temperature of the refrigeration oil and the temperature of the top of the machine is greater than or equal to a preset threshold value, determining that the oil return capillary tube is solidified;
and if the difference between the temperature of the refrigeration oil and the temperature of the top of the engine is smaller than a preset threshold value, determining that the oil return capillary tube is not solidified.
In some embodiments of the present application, the detecting whether the oil return capillary is solidified includes:
obtaining the temperature of the frozen oil in the oil return capillary;
acquiring the ambient temperature of an outdoor unit of the air conditioner;
acquiring the set top temperature of a compressor of the air conditioner;
if the temperature of the refrigerating oil is equal to the difference between the environment temperature and the temperature of the top of the engine and the temperature of the refrigerating oil is greater than or equal to a preset threshold value, the oil return capillary tube is determined to be solidified;
and if the temperature of the refrigerating oil is not equal to the difference value between the environment temperature and the temperature of the top of the engine and the temperature of the refrigerating oil is smaller than a preset threshold value, determining that the oil return capillary tube is not solidified.
In some embodiments of this application, the air conditioner is provided with oil return temperature sensor, bears down on the roof temperature sensor and outdoor ambient temperature sensor, acquire the oil temperature that freezes in the oil return capillary, acquire the ambient temperature of the off-premises station of air conditioner, acquire the roof temperature of the compressor of air conditioner includes:
acquiring the temperature of the refrigeration oil through the oil return temperature sensor;
acquiring the set top temperature of the set top of the compressor through the set top temperature sensor;
and acquiring the ambient temperature through the outdoor ambient temperature sensor.
On the other hand, this application still provides a controlling means of air conditioner, the air conditioner includes the oil return capillary that is used for the refrigeration oil to return, the device includes:
the first detection module is used for detecting whether the oil return capillary tube is solidified or not when the air conditioner meets a preset condition;
the closing module is used for closing an internal machine of the air conditioner according to a first preset time length if the oil return capillary tube is solidified;
the starting module is used for starting the internal unit of the air conditioner according to a second preset time after the internal unit of the air conditioner is closed according to the first preset time;
and the second detection module is used for continuously detecting whether the oil return capillary tube is solidified or not until the result of detecting whether the oil return capillary tube is solidified or not is negative, and the air conditioner normally operates.
In some embodiments of the present application, the first detection module is specifically configured to:
and when the air conditioner starts the heating mode, detecting whether the oil return capillary tube is solidified.
In some embodiments of the present application, the first detecting module is further specifically configured to:
obtaining the temperature of the frozen oil in the oil return capillary;
acquiring the ambient temperature of an outdoor unit of the air conditioner;
if the temperature of the refrigeration oil is equal to the environmental temperature, determining that the oil return capillary tube is solidified;
and if the temperature of the refrigeration oil is not equal to the environmental temperature, determining that the oil return capillary tube is not solidified.
In some embodiments of the present application, the first detecting module is further specifically configured to:
obtaining the temperature of the frozen oil in the oil return capillary;
acquiring the set top temperature of a compressor of the air conditioner;
if the difference between the temperature of the refrigeration oil and the temperature of the top of the machine is greater than or equal to a preset threshold value, determining that the oil return capillary tube is solidified;
and if the difference between the temperature of the refrigeration oil and the temperature of the top of the engine is smaller than a preset threshold value, determining that the oil return capillary tube is not solidified.
In some embodiments of the present application, the first detecting module is further specifically configured to:
obtaining the temperature of the frozen oil in the oil return capillary;
acquiring the ambient temperature of an outdoor unit of the air conditioner;
acquiring the set top temperature of a compressor of the air conditioner;
if the temperature of the refrigerating oil is equal to the difference between the environment temperature and the temperature of the top of the engine and the temperature of the refrigerating oil is greater than or equal to a preset threshold value, the oil return capillary tube is determined to be solidified;
and if the temperature of the refrigerating oil is not equal to the difference value between the environment temperature and the temperature of the top of the engine and the temperature of the refrigerating oil is smaller than a preset threshold value, determining that the oil return capillary tube is not solidified.
On the other hand, this application still provides an air conditioner, the air conditioner includes the oil return capillary that is used for the refrigeration oil return, the air conditioner includes:
one or more processors;
a memory; and
one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement any one of the control methods and control apparatuses of the air conditioner.
In another aspect, the present application further provides a storage medium having a computer program stored thereon, where the computer program is loaded by a processor to execute any one of the control method and the control device for an air conditioner.
This application is through acquireing the information that oil return capillary solidifies in the air conditioner after, through setting up two time periods, according to closing and opening of two time period repetitive control air conditioner indoor units, the pressure differential that the indoor unit can effectively increase oil return capillary both ends is closed and opened repeatedly, utilizes the flow resistance of the refrigeration oil in the oil return capillary of increased pressure differential overcoming for the oil return capillary removes the solidification, and the oil return is effective, has promoted the life of compressor, has strengthened the reliability of complete machine.
Drawings
Fig. 1 is a schematic view of a control system of an air conditioner provided in an embodiment of the present application;
FIG. 2 is a flow chart illustrating an embodiment of a method for controlling an air conditioner according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of an embodiment of an air conditioner in an embodiment of the present application;
FIG. 4 is a flowchart illustrating an embodiment of a method for controlling an air conditioner according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an embodiment of a control device of an air conditioner in the embodiment of the present application;
fig. 6 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 application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited 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 application. 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 application may be practiced without these specific details. In other instances, well-known structures and processes are not set forth in detail in order to avoid obscuring the description of the present application with unnecessary detail. Thus, the present application 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 application provides a control method and device of an air conditioner, the air conditioner and a storage medium, which are respectively explained below.
Referring to fig. 1, fig. 1 is a schematic view of a scene of a control method of an air conditioner according to an embodiment of the present disclosure, a control system of the air conditioner may include an indoor unit 100 and an outdoor unit 200, the indoor unit 100 is connected to the outdoor unit 200 through a pipeline, and the indoor unit 100 may receive a control signal on a remote controller or a control panel to perform a series of functions of the indoor unit of the air conditioner, such as cooling, heating, dehumidifying, and dedusting. The outdoor unit 200 can perform corresponding operations such as condensation, heat dissipation, and exhaust in cooperation with the indoor unit 100; the indoor unit 100 may also execute a corresponding preset program, for example, the control method of the air conditioner in the present application, before executing a corresponding action according to the control signal.
In the embodiment of the present invention, the indoor unit 100 includes, but is not limited to, a wall-mounted indoor unit, a cabinet-mounted indoor unit, a window-mounted indoor unit, a ceiling-mounted indoor unit, an embedded indoor unit, and the like.
In the embodiment of the present application, the indoor unit 100 and the outdoor unit 200 may be connected in any manner, including but not limited to signal communication through an electronic circuit and communication through a wireless signal, where the wireless signal may be computer network communication of a TCP/IP Protocol Suite (TCP/IP) or a User Datagram Protocol (UDP).
Those skilled in the art can understand that the application environment shown in fig. 1 is only one application scenario of the present application, and does not constitute a limitation on the application scenario of the present application, and other application environments may further include more or fewer indoor units and outdoor units than those shown in fig. 1, for example, only 1 indoor unit or outdoor unit is shown in fig. 1, and the control system of the air conditioner of the present application may further include one or more indoor units and outdoor units for executing the control method of the air conditioner of the present application, which is not limited herein.
It should be noted that the scenario diagram of the control system of the air conditioner shown in fig. 1 is only an example, the control system and the scenario of the air conditioner described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and it is known by a person skilled in the art that the technical solution provided in the embodiment of the present application is also applicable to similar technical problems along with the evolution of the control system of the air conditioner and the appearance of new service scenarios.
As shown in fig. 2, fig. 2 is a schematic flow chart of an embodiment of a control method of an air conditioner in the embodiment of the present application, where the control method of the air conditioner may include the following steps 201 to 204:
201. and when the air conditioner meets a preset condition, detecting whether the oil return capillary tube is solidified.
For example, as shown in fig. 3, the air conditioner may include basic devices such as a compressor, a four-way valve, an electronic expansion valve, a low-pressure stop valve, a high-pressure stop valve, a gas-liquid separator, a low-pressure sensor, a high-pressure sensor, an external unit throttling device, an oil separator, and an oil return capillary tube, and the air conditioner shown in fig. 3 is only a basic configuration of one of the air conditioners and is not limited to the air conditioners having other configurations.
The preset condition may be an instruction, and when the air conditioner receives the instruction, the oil return capillary starts to be detected whether to be solidified, where the preset condition may also be a step of detecting whether to be solidified by the oil return capillary when an operation parameter or a state of the air conditioner reaches a specified condition when the air conditioner operates according to a preset program; wherein, the oil return capillary can be a capillary hose, the oil return capillary can introduce freezing oil or reintroduce to the compressor of air conditioner in, guarantees that the oil liquid level of compressor is at a take the altitude, and if the oil liquid level was low excessively, the compressor just can not normally work, causes the damage of compressor even easily.
202. And if the oil return capillary tube is solidified, closing the inner machine of the air conditioner according to a first preset time length.
The indoor unit or indoor unit of an air conditioner generally refers to a machine placed in a room in an air conditioning system, such as: a hanging type air conditioner, a vertical cabinet type air conditioner, a ceiling type air conditioner, etc. According to when first predetermineeing for a long time, will air conditioner indoor unit closes, can increase the pressure differential at oil return capillary both ends, through increasing pressure differential, can overcome the flow resistance that the refrigeration oil rises at the operation in-process in the oil return capillary, and when flow resistance was overcome, the refrigeration oil in the oil return capillary just can not solidify.
For example, the first preset time period may be set according to an actual application scenario when the air conditioner leaves a factory, and for example, the first preset time period may be 3 minutes.
203. And after the internal machine of the air conditioner is closed according to the first preset time, the internal machine of the air conditioner is opened according to the second preset time.
The second preset time length and the first preset time length in the step are two time length periods which are not interfered with each other. Meanwhile, there are different types of refrigeration oils in the market, such as artificial synthetic oil or mineral oil; and in the market, there are also a large number of refrigerated oil suppliers, such as: beneficial Camma Uniqema, American CPI, sunlight SUNOCO, Gadus Caltex, Mobil, BP Jiaguduo, Foss FUCHS, light extraction, Ke Pi, and China Petroleum CNPC, etc., therefore different freezing oil solidifying points are different, so the first preset time and the second preset time can be set according to specific conditions to control the pressure difference at two ends of the oil return capillary.
In step 202, the air conditioner is turned off according to the preset first time period, and if the first preset time period is too long, the pressure difference can be increased, but the air conditioner indoor unit is always in the off state. Therefore, the air conditioner indoor unit is started according to a certain time length, and meanwhile, the air conditioner is started according to a certain preset time length, so that the low pressure over-low of the increased pressure difference can be avoided. For example, if an increased pressure difference is obtained after the air conditioner internal unit is turned off according to the step 202, in general, the pressure difference fluctuates within a range interval, and if the interval of the pressure difference is [ x, y ] (x >0, y >0, x < y), the air conditioner internal unit is turned on according to the second preset time length, so that the pressure difference interval becomes [ x + a, y ] (x >0, a >0, y >0, x + a < y), and thus, the low pressure of the pressure difference interval can be increased, and the oil return effect is better.
For example, the second preset time period may be set when the air conditioner leaves the factory, and the second preset time period may be 1 minute.
204. And continuously detecting whether the oil return capillary tube is solidified or not until the result of detecting whether the oil return capillary tube is solidified or not is negative, and the air conditioner operates normally.
When the step 202 and the step 203 are completed, the control method of the air conditioner will continue to detect whether the oil return capillary is solidified, and when the air conditioner starts to operate, the temperature of each component of the air conditioner internal unit is not increased, so that the temperature of the refrigeration oil in the oil return capillary cannot be increased; after the air conditioner operates for a period of time, when the temperature of each component rises, for example, the compressor operates for a period of time, the internal temperature of the compressor rises, the temperature of the refrigerant oil in the oil return capillary tube also can be driven by the temperature of the compressor which rises at this time to rise, and the refrigerant oil cannot be solidified after the temperature of the refrigerant oil rises to a certain degree, so that the air conditioner needs to continuously detect whether the oil return capillary tube is solidified or not when the temperature of the refrigerant oil does not rise, and when the detection result is still yes, the step 202 and the step 203 are repeated to dredge the oil return capillary tube, and only when the oil return capillary tube is not detected to be solidified, the air conditioner can normally operate.
This application is through acquireing the information that oil return capillary solidifies in the air conditioner after, through setting up two time periods, according to closing and opening of two time period repetitive control air conditioner indoor units, the pressure differential that the indoor unit can effectively increase oil return capillary both ends is closed and opened repeatedly, utilizes the flow resistance of the refrigeration oil in the oil return capillary of increased pressure differential overcoming for the oil return capillary removes the solidification, and the oil return is effective, has promoted the life of compressor, has strengthened the reliability of complete machine.
Wherein, in this application embodiment, the air conditioner includes the mode of heating, when the air conditioner satisfies preset condition, detect whether the oil return capillary solidifies, include: and when the air conditioner starts the heating mode, detecting whether the oil return capillary tube is solidified.
Under general conditions, in winter, when the air conditioner started the mode of heating, winter's ambient temperature was crossed lowly, the oil return capillary is the refrigerated oil temperature also on the low side, this moment the oil return capillary solidifies easily, and when winter, the user can not use the refrigeration mode usually, consequently, when the mode of starting of air conditioner was the mode of heating, alright indirect judgement indoor ambient temperature was the low temperature, and oil return capillary probability can block up, if take earlier to detect indoor ambient temperature, when ambient temperature was less than a certain threshold value, just started the step of detecting whether oil return capillary solidifies, had an extra judgement action like this, therefore this scheme can omit a judgement step, played the effect of procedure optimization.
In this embodiment of the application, before detecting whether the oil return capillary is solidified when the air conditioner satisfies a preset condition, the method further includes: and the air conditioner starts to time according to a third preset time length. And after the air conditioner finishes timing, starting to detect whether the oil return capillary tube is solidified.
At the beginning of the air conditioner start-up, the refrigeration oil in the oil return capillary tube will not generally freeze immediately, for example: when the air conditioner does not use in a period of time, then receive and open, the compressor just started working this moment, the pressure at oil return capillary both ends can increase suddenly, after lasting work a period, the pressure at oil return capillary both ends just can tend to steadily, consequently, when the air conditioner just started, need not begin to detect immediately whether the oil return capillary solidifies. Therefore, the detection can be started after the air conditioner completes the timing, so that the additional work of the air conditioner can be saved.
In this application embodiment, whether detection oil return capillary solidifies includes:
obtaining the temperature of the frozen oil in the oil return capillary;
acquiring the ambient temperature of an outdoor unit of the air conditioner;
acquiring the set top temperature of a compressor of the air conditioner;
after the temperature of the refrigeration oil, the ambient temperature and the temperature of the top of the engine are obtained, whether the oil return capillary tube is solidified or not can be detected through the following scheme:
(1) and if the temperature of the refrigeration oil is equal to the environmental temperature, determining that the oil return capillary tube is solidified.
And if the temperature of the refrigeration oil is not equal to the environmental temperature, determining that the oil return capillary tube is not solidified.
For example, when the ambient temperature of the outdoor unit is minus 5 degrees, and the temperature of the refrigerant oil is detected to be minus five degrees, it may be determined that the oil return capillary tube is frozen.
(2) And if the difference between the temperature of the refrigeration oil and the temperature of the top of the engine is greater than or equal to a preset threshold value, determining that the oil return capillary tube is solidified.
And if the difference between the temperature of the refrigeration oil and the temperature of the top of the engine is smaller than a preset threshold value, determining that the oil return capillary tube is not solidified.
For example, when the difference between the set-top temperature minus the chilled oil temperature is within the [15 degrees Celsius, 20 degrees Celsius ] interval, then it may be determined that the return oil capillary is frozen.
(3) If the temperature of the refrigerating oil is equal to the difference between the environment temperature and the temperature of the top of the engine and the temperature of the refrigerating oil is greater than or equal to a preset threshold value, the oil return capillary tube is determined to be solidified;
and if the temperature of the refrigerating oil is not equal to the difference value between the environment temperature and the temperature of the top of the engine and the temperature of the refrigerating oil is smaller than a preset threshold value, determining that the oil return capillary tube is not solidified.
The same points as those of the above-described schemes (1) and (2) will not be described herein again.
Whether the oil return capillary tube is solidified or not can be judged according to the three methods.
In this application embodiment, the air conditioner is provided with oil return temperature sensor, bears down on the roof temperature sensor and outdoor ambient temperature sensor, acquire the oil temperature that freezes in the oil return capillary, acquire the ambient temperature of the off-premises station of air conditioner, acquire the roof temperature of the compressor of air conditioner includes:
acquiring the temperature of the refrigeration oil through the oil return temperature sensor;
acquiring the set top temperature of the set top of the compressor through the set top temperature sensor;
and acquiring the ambient temperature through the outdoor ambient temperature sensor.
Wherein, for example, the oil return temperature sensor can be installed between the oil separator and the oil return capillary tube; the capping temperature sensor can be mounted on the top of the compressor shell; the outdoor environment temperature sensor can be installed at the air inlet of the outdoor heat exchanger, and it should be noted that the installation modes of the three temperature sensors are only one installation mode, and do not limit the scheme, and the scheme is not limited in detail here.
As shown in fig. 4, in the embodiment of the present application, in combination with the above embodiments, a more detailed process may be provided, where the process may include steps 401 to 409:
401. the air conditioner receives the start signal, the compressor is ready to start, and the process proceeds to step 402.
402. The air conditioner is in a heating mode or a cooling mode, the heating mode proceeds to step 404, and the cooling mode proceeds to step 403.
403. The air conditioner is in a refrigeration mode, a refrigeration mode compressor is started, and the air conditioner operates according to the set temperature or the received control signal.
404. The air conditioner is in a heating mode, a heating mode compressor is started, the air conditioner starts timing, and the step 405 is entered.
405. The oil return temperature sensor detects the temperature T1 of the refrigeration oil of the oil return capillary in real time; an outdoor environment temperature sensor detects the environment temperature T2 where an outdoor unit operates in real time; the compressor head temperature sensor detects the compressor head temperature T3 in real time and proceeds to step 406.
406. And when the air conditioner is timed according to the third preset time, starting to detect whether the oil return capillary is solidified, and entering step 407.
407. And when the system judges that T1 is T2 or T1-T3 are more than or equal to the preset threshold, the step 408 is entered, otherwise, the step 409 is entered.
408. The air conditioner internal unit is closed according to a first preset time; and the air conditioner internal unit is started according to the second preset time, the opening angle of the wind shield of the air conditioner internal unit is the opening and closing angle when the air conditioner runs before the air conditioner is closed, and the step 407 is returned.
409. The heating mode of the air conditioner is normally controlled, and the internal machine of the air conditioner is controlled according to a preset program.
In order to better implement the control method of the air conditioner in the embodiment of the present application, in addition to the control method of the air conditioner, an embodiment of the present application further provides a control device of the air conditioner, as shown in fig. 5, the control device 500 of the air conditioner includes:
501. the first detection module is used for detecting whether the oil return capillary tube is solidified or not when the air conditioner meets a preset condition;
502. the closing module is used for closing an internal machine of the air conditioner according to a first preset time length if the oil return capillary tube is solidified;
503. the starting module is used for starting the internal unit of the air conditioner according to a second preset time after the internal unit of the air conditioner is closed according to the first preset time;
504. and the second detection module is used for continuously detecting whether the oil return capillary tube is solidified or not until the result of detecting whether the oil return capillary tube is solidified or not is negative, and the air conditioner normally operates.
This application is through obtaining in the air conditioner after detecting the information that the oil return capillary solidifies through first detection module 501, through setting up two time periods, through close module 502 with open module 503 according to closing and opening of two time period repetitive control air conditioner indoor units, the repeated pressure differential of closing and opening the indoor unit ability and effectively increasing oil return capillary both ends utilizes the pressure differential that increases to overcome the flow resistance of refrigeration oil in the oil return capillary, the rethread second detection module 504 is used for continuous detection whether the oil return capillary solidifies, if still solidify and continue the repeated air conditioner of closing and opening according to two preset periods, finally make the oil return capillary remove the solidification, the oil return is effective, has promoted the life of compressor, has strengthened the reliability of complete machine.
In this embodiment of the application, the first detection module 501 is specifically configured to:
and when the air conditioner starts the heating mode, detecting whether the oil return capillary tube is solidified.
In some embodiments of the present application, the first detecting module is further specifically configured to:
obtaining the temperature of the frozen oil in the oil return capillary;
acquiring the ambient temperature of an outdoor unit of the air conditioner;
if the temperature of the refrigeration oil is equal to the environmental temperature, determining that the oil return capillary tube is solidified;
and if the temperature of the refrigeration oil is not equal to the environmental temperature, determining that the oil return capillary tube is not solidified.
In this embodiment of the application, the first detecting module 501 is further specifically configured to:
obtaining the temperature of the frozen oil in the oil return capillary;
acquiring the set top temperature of a compressor of the air conditioner;
if the difference between the temperature of the refrigeration oil and the temperature of the top of the machine is greater than or equal to a preset threshold value, determining that the oil return capillary tube is solidified;
and if the difference between the temperature of the refrigeration oil and the temperature of the top of the engine is smaller than a preset threshold value, determining that the oil return capillary tube is not solidified.
In this embodiment of the application, the first detecting module 501 is further specifically configured to:
obtaining the temperature of the frozen oil in the oil return capillary;
acquiring the ambient temperature of an outdoor unit of the air conditioner;
acquiring the set top temperature of a compressor of the air conditioner;
if the temperature of the refrigerating oil is equal to the difference between the environment temperature and the temperature of the top of the engine and the temperature of the refrigerating oil is greater than or equal to a preset threshold value, the oil return capillary tube is determined to be solidified;
and if the temperature of the refrigerating oil is not equal to the difference value between the environment temperature and the temperature of the top of the engine and the temperature of the refrigerating oil is smaller than a preset threshold value, determining that the oil return capillary tube is not solidified.
On the other hand, still provide an air conditioner in this application embodiment, the air conditioner includes the oil return capillary that is used for the refrigeration oil to return, the air conditioner includes:
one or more processors;
a memory; and
one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor, so as to implement the control method and the control device of the air conditioner according to any embodiment of the present invention.
An embodiment of the present application further provides an air conditioner, where the air conditioner includes an oil return capillary tube for returning refrigeration oil, and the oil return capillary tube integrates a control device of the air conditioner according to any one of embodiments of the present application, as shown in fig. 6, which shows a schematic structural diagram of the air conditioner according to an embodiment of the present application, and specifically:
besides the devices included in the normal air conditioner, such as the compressor, the four-way valve, the electronic expansion valve, the low-pressure stop valve, the high-pressure stop valve, the gas-liquid separator, the low-pressure sensor, the high-pressure sensor, the external machine throttling device, the oil separator, the oil return capillary tube, etc., the air conditioner of the present embodiment may further include one or more processors 601 for processing cores, one or more memories 602 for computer-readable storage media, a power supply 603, an input unit 604, etc. Those skilled in the art will appreciate that the air conditioner configuration shown in fig. 6 is not intended to be limiting and may include more or fewer components than shown, or some components in combination, or a different arrangement of components. Wherein:
the processor 601 is a control center of the control method of the air conditioner, connects various parts of the whole air conditioner by using various interfaces and lines, and executes various functions and processes data of the air conditioner by running or executing software programs and/or modules stored in the memory 602 and calling data stored in the memory 602, thereby performing overall monitoring on the operation of the control method of the air conditioner. Optionally, processor 601 may include one or more processing cores; the Processor 601 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, preferably the processor 601 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 processor 601.
The memory 602 may be used to store software programs and modules, and the processor 601 executes various functional applications and data processing by operating the software programs and modules stored in the memory 602. The memory 602 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a control program of an air conditioner of the present application), and the like; the storage data area may store data created according to the use of the air conditioner, and the like. Further, the memory 602 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. Accordingly, the memory 602 may also include a memory controller to provide the processor 601 with access to the memory 602.
The air conditioner further includes a power supply 603 for supplying power to each component, and preferably, the power supply 603 may be logically connected to the processor 601 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system. The power supply 603 may also include any component of one or more dc or ac power sources, recharging systems, power failure detection circuitry, power converters or inverters, power status indicators, and the like.
The air conditioner may further include an input unit 604, and the input unit 604 may be used to receive input numeric or character information and generate a remote controller related to user setting and function control, a control panel of the air conditioner, or input through an intelligent home system such as a remote network, APP, or instant voice signal.
Although not shown, the air conditioner may further include a display unit, for example, a display panel for displaying the air conditioner operation parameters, which is not described herein in detail.
In addition, in this embodiment, specifically, the processor 601 in the air conditioner loads the executable file corresponding to the process of one or more application programs into the memory 602 according to the following instructions, and the processor 601 runs the application programs stored in the memory 602, so as to implement various functions, for example:
when the air conditioner meets a preset condition, detecting whether the oil return capillary tube is solidified or not;
if the oil return capillary tube is solidified, closing an internal machine of the air conditioner according to a first preset time length;
after the internal machine of the air conditioner is closed according to the first preset time, the internal machine of the air conditioner is opened according to the second preset time;
and continuously detecting whether the oil return capillary tube is solidified or not until the result of detecting whether the oil return capillary tube is solidified or not is negative, and the air conditioner operates normally.
It will be understood by those skilled in the art that all or part of the steps of the methods of the above embodiments may be performed by instructions or by associated hardware controlled by the instructions, which may be stored in a computer readable storage medium and loaded and executed by a processor.
To this end, an embodiment of the present application provides an air conditioner readable storage medium, which may include: read Only Memory (ROM), Random Access Memory (RAM), and the like. The air conditioner control method comprises a step of storing a computer program, and a step of executing the steps in any one of the air conditioner control methods provided by the embodiments of the application by loading the computer program by a processor. For example, the computer program may be loaded by a processor to perform the steps of:
when the air conditioner meets a preset condition, detecting whether the oil return capillary tube is solidified or not;
if the oil return capillary tube is solidified, closing an internal machine of the air conditioner according to a first preset time length;
after the internal machine of the air conditioner is closed according to the first preset time, the internal machine of the air conditioner is opened according to the second preset time;
and continuously detecting whether the oil return capillary tube is solidified or not until the result of detecting whether the oil return capillary tube is solidified or not is negative, and the air conditioner operates normally.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and parts that are not described in detail in a certain embodiment may refer to the above detailed descriptions of other embodiments, and are not described herein again.
In a specific implementation, each unit or structure may be implemented as an independent entity, or may be combined arbitrarily to be implemented as one or several entities, and the specific implementation of each unit or structure may refer to the foregoing method embodiment, which is not described herein again.
The above operations can be implemented in the foregoing embodiments, and are not described in detail herein.
The foregoing detailed description is directed to a method and an apparatus for controlling an air conditioner, the air conditioner, and a storage medium provided in the embodiments of the present application, and specific examples are applied herein to explain the principles and implementations of the present application, and the descriptions of the foregoing embodiments are only used to help understand the method and the core ideas of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. A control method of an air conditioner including an oil return capillary for returning refrigerant oil, the control method comprising:
when the air conditioner meets a preset condition, detecting whether the oil return capillary tube is solidified or not;
if the oil return capillary tube is solidified, closing an internal machine of the air conditioner according to a first preset time length;
after the internal machine of the air conditioner is closed, the internal machine of the air conditioner is opened according to a second preset time length;
and continuously detecting whether the oil return capillary is solidified or not until the oil return capillary is detected to be not solidified.
2. The method for controlling an air conditioner according to claim 1, wherein the air conditioner includes a heating mode, and the detecting whether the oil return capillary tube is solidified when the air conditioner satisfies a preset condition includes:
and when the air conditioner starts the heating mode, detecting whether the oil return capillary tube is solidified.
3. The method for controlling an air conditioner according to claim 2, wherein before detecting whether the oil return capillary tube is solidified when the air conditioner satisfies a preset condition, the method further comprises:
the air conditioner starts timing according to a third preset time length;
and after the air conditioner finishes timing, starting to detect whether the oil return capillary tube is solidified.
4. The control method of an air conditioner according to claim 1, wherein the detecting whether the oil return capillary tube is solidified includes:
obtaining the temperature of the frozen oil in the oil return capillary;
acquiring the ambient temperature of an outdoor unit of the air conditioner;
if the temperature of the refrigeration oil is equal to the environmental temperature, determining that the oil return capillary tube is solidified;
and if the temperature of the refrigeration oil is not equal to the environmental temperature, determining that the oil return capillary tube is not solidified.
5. The control method of an air conditioner according to claim 1, wherein the detecting whether the oil return capillary tube is solidified includes:
obtaining the temperature of the frozen oil in the oil return capillary;
acquiring the set top temperature of a compressor of the air conditioner;
if the difference between the temperature of the refrigeration oil and the temperature of the top of the machine is greater than or equal to a preset threshold value, determining that the oil return capillary tube is solidified;
and if the difference between the temperature of the refrigeration oil and the temperature of the top of the engine is smaller than a preset threshold value, determining that the oil return capillary tube is not solidified.
6. The method of claim 1, wherein the detecting whether the oil return capillary tube is solidified comprises:
obtaining the temperature of the frozen oil in the oil return capillary;
acquiring the ambient temperature of an outdoor unit of the air conditioner;
acquiring the set top temperature of a compressor of the air conditioner;
if the temperature of the refrigerating oil is equal to the difference between the environment temperature and the temperature of the top of the engine and the temperature of the refrigerating oil is greater than or equal to a preset threshold value, the oil return capillary tube is determined to be solidified;
and if the temperature of the refrigerating oil is not equal to the difference value between the environment temperature and the temperature of the top of the engine and the temperature of the refrigerating oil is smaller than a preset threshold value, determining that the oil return capillary tube is not solidified.
7. The method of claim 6, wherein the air conditioner is provided with an oil return temperature sensor, a top pressure temperature sensor and an outdoor environment temperature sensor, the obtaining of the temperature of the frozen oil in the oil return capillary tube, the obtaining of the environment temperature of an outdoor unit of the air conditioner and the obtaining of the top temperature of a compressor of the air conditioner comprises:
acquiring the temperature of the refrigeration oil through the oil return temperature sensor;
acquiring the set top temperature of the set top of the compressor through the set top temperature sensor;
and acquiring the ambient temperature through the outdoor ambient temperature sensor.
8. A control device of an air conditioner, characterized in that the air conditioner includes an oil return capillary tube for returning refrigeration oil, the device includes:
the first detection module is used for detecting whether the oil return capillary tube is solidified or not when the air conditioner meets a preset condition;
the closing module is used for closing an internal machine of the air conditioner according to a first preset time length if the oil return capillary tube is solidified;
the starting module is used for starting the internal unit of the air conditioner according to a second preset time after the internal unit of the air conditioner is closed according to the first preset time;
and the second detection module is used for continuously detecting whether the oil return capillary tube is solidified or not until the result of detecting whether the oil return capillary tube is solidified or not is negative, and the air conditioner normally operates.
9. An air conditioner, characterized in that, the air conditioner includes the oil return capillary that is used for refrigeration oil to return, the air conditioner includes:
one or more processors;
a memory; and
one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the control method and control apparatus of the air conditioner of any one of claims 1 to 8.
10. A storage medium having stored thereon a computer program to be loaded by a processor to execute the control method and control apparatus of an air conditioner according to any one of claims 1 to 8.
CN202110504705.7A 2021-05-10 2021-05-10 Control method and device of air conditioner, air conditioner and storage medium Pending CN113339961A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202141254U (en) * 2011-06-16 2012-02-08 浙江国祥空调设备有限公司 High temperature water chilling unit
CN104089347A (en) * 2014-06-24 2014-10-08 广东申菱空调设备有限公司 Low-temperature air-cooled water chiller unit and control method thereof
CN104279720A (en) * 2013-07-09 2015-01-14 广东美的暖通设备有限公司 Air conditioner system and oil quantity and oil-way smoothness and blocking detection method
CN105066494A (en) * 2015-08-27 2015-11-18 广东申菱环境系统股份有限公司 Nuclear-grade direct evaporation combined type air handling unit and control method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202141254U (en) * 2011-06-16 2012-02-08 浙江国祥空调设备有限公司 High temperature water chilling unit
CN104279720A (en) * 2013-07-09 2015-01-14 广东美的暖通设备有限公司 Air conditioner system and oil quantity and oil-way smoothness and blocking detection method
CN104089347A (en) * 2014-06-24 2014-10-08 广东申菱空调设备有限公司 Low-temperature air-cooled water chiller unit and control method thereof
CN105066494A (en) * 2015-08-27 2015-11-18 广东申菱环境系统股份有限公司 Nuclear-grade direct evaporation combined type air handling unit and control method thereof

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