CN107101346B - Outdoor fan control method, air conditioner, and computer-readable storage medium - Google Patents
Outdoor fan control method, air conditioner, and computer-readable storage medium Download PDFInfo
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- CN107101346B CN107101346B CN201710466584.5A CN201710466584A CN107101346B CN 107101346 B CN107101346 B CN 107101346B CN 201710466584 A CN201710466584 A CN 201710466584A CN 107101346 B CN107101346 B CN 107101346B
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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
- F24F11/70—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F2110/00—Control inputs relating to air properties
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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
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- 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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- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an outdoor fan control method, which comprises the following steps: acquiring the temperature of a coil of an outdoor heat exchanger when the air conditioner is in heating operation; determining a temperature drop value of the outdoor heat exchanger according to the acquired temperature of the coil, and judging whether the temperature drop value is smaller than a current standard temperature drop value or not; when the temperature drop value is greater than or equal to the current standard temperature drop value, the rotating speed of the outdoor fan is increased; and updating the standard temperature drop value, and continuously executing the step of acquiring the temperature of the coil of the outdoor heat exchanger until the air conditioner meets the defrosting condition, wherein the standard temperature drop value before updating is smaller than the standard temperature drop value after updating. The invention also provides an air conditioner and a computer readable storage medium. The invention delays the frosting of the outdoor heat exchanger by adjusting the rotating speed of the outdoor fan for many times before reaching the defrosting condition, reduces the defrosting times of the air conditioner in severe environment and improves the heating effect.
Description
Technical Field
The present invention relates to the field of air conditioners, and in particular, to an external fan control method, an air conditioner, and a computer-readable storage medium.
Background
When the air conditioner is operated for heating, under the condition that the environment is lower than a certain temperature, the outdoor heat exchanger can easily generate a frosting phenomenon, the frosting phenomenon can directly influence the heating effect of the indoor side, when the frosting phenomenon reaches a certain thickness, the air conditioner can carry out automatic defrosting treatment, the principle of defrosting is that the compressor stops running and the four-way valve is switched to the back, so that the air conditioner carries out reverse operation refrigeration, and the outdoor heat exchanger flows a high-temperature refrigerant to defrost.
In the prior art, the defrosting is usually performed immediately when the temperature of the outdoor heat exchanger coil is lower than the defrosting temperature, and in some severe environments such as low-temperature and high-humidity environments, the temperature of the outdoor heat exchanger coil is easily lower than the defrosting temperature, so that the air conditioner is frequently switched to refrigeration and defrosting when heating, and the heating effect is poor.
Disclosure of Invention
The invention mainly aims to provide an external fan control method, an air conditioner and a computer readable storage medium, and aims to solve the technical problem of poor heating effect caused by frequent defrosting of the air conditioner in a severe environment.
In order to solve the above problems, the present invention provides an outdoor fan control method, including the steps of:
acquiring the temperature of a coil of an outdoor heat exchanger when the air conditioner is in heating operation;
determining a temperature drop value of the outdoor heat exchanger according to the acquired coil temperature, and judging whether the temperature drop value is smaller than a current standard temperature drop value, wherein when the coil temperature is acquired for the first time, the step of acquiring the coil temperature of the outdoor heat exchanger is continuously executed;
when the temperature drop value is smaller than the current standard temperature drop value, continuing to execute the step of obtaining the coil temperature of the outdoor heat exchanger;
when the temperature drop value is greater than or equal to the current standard temperature drop value, increasing the rotating speed of the outdoor fan;
and updating the standard temperature drop value, and continuing to execute the step of obtaining the coil temperature of the outdoor heat exchanger until the air conditioner meets defrosting conditions, wherein the standard temperature drop value before updating is smaller than the standard temperature drop value after updating.
Optionally, the step of determining the temperature drop value of the outdoor heat exchanger according to the acquired coil temperature includes:
calculating the temperature drop value according to the currently acquired coil temperature and the last acquired coil temperature;
or calculating the temperature drop value according to the currently acquired coil temperature and the initial coil temperature.
Optionally, the outdoor fan control method further includes the steps of:
resetting the standard temperature drop value to a preset standard temperature drop value when the air conditioner meets the defrosting condition;
or when the air conditioner enters a heating mode, resetting the standard temperature drop value to a preset standard temperature drop value.
Optionally, the outdoor fan control method further includes:
the method comprises the steps that when the air conditioner is in heating operation, the operation time length of the air conditioner is obtained;
and when the running time of the air conditioner is longer than the preset time, executing the step of acquiring the temperature of the coil pipe of the outdoor heat exchanger in a timing manner.
Optionally, the step of increasing the rotation speed of the outdoor fan includes:
acquiring a rotation speed increment;
and adjusting the rotating speed of the outdoor fan according to the acquired rotating speed increment.
Optionally, after the step of obtaining the rotation speed increment, the step of increasing the rotation speed of the outdoor fan further includes:
judging whether the rotating speed adjusted according to the current rotating speed increment is larger than the maximum rotating speed of the outdoor fan;
when the adjusted rotating speed is greater than or equal to the maximum rotating speed of the outdoor fan, adjusting the rotating speed of the outdoor fan to the maximum rotating speed;
and when the adjusted rotating speed is less than the maximum rotating speed of the outdoor fan, executing the step of adjusting the rotating speed of the outdoor fan according to the obtained rotating speed increment.
In order to achieve the above object, the present invention further provides an outdoor fan control device including a memory, a processor, and an outdoor fan control program stored in the memory and operable on the processor, wherein the outdoor fan control program, when executed by the processor, implements the steps of the outdoor fan control method described above.
In addition, in order to achieve the above object, the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores an outdoor fan control program, and the outdoor fan control program, when executed by a processor, implements the steps of the outdoor fan control method as described above.
According to the outdoor fan control method, the air conditioner and the computer readable storage medium provided by the embodiment of the invention, when the temperature drop value of the coil of the outdoor heat exchanger is larger than the standard drop value, the rotating speed of the outdoor fan can be adjusted to increase the heat exchange quantity of the outdoor heat exchanger and delay frosting, and meanwhile, the standard drop value is increased along with the temperature drop of the outdoor heat exchanger so as to prevent the rotating speed of the outdoor fan from reaching the maximum value too fast.
Drawings
Fig. 1 is a schematic structural diagram of a television set in a hardware operating environment of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating a first embodiment of an outdoor fan control method according to the present invention;
fig. 3 is a flowchart illustrating an outdoor fan control method according to a third embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows:
acquiring the temperature of a coil of an outdoor heat exchanger when the air conditioner is in heating operation;
determining a temperature drop value of the outdoor heat exchanger according to the acquired coil temperature, and judging whether the temperature drop value is smaller than a current standard temperature drop value, wherein when the coil temperature is acquired for the first time, the step of acquiring the coil temperature of the outdoor heat exchanger is continuously executed;
when the temperature drop value is smaller than the current standard temperature drop value, the step of obtaining the temperature of the coil pipe of the outdoor heat exchanger is continuously executed;
when the temperature drop value is greater than or equal to the current standard temperature drop value, the rotating speed of the outdoor fan is increased;
and updating the standard temperature drop value, and continuously executing the step of acquiring the temperature of the coil of the outdoor heat exchanger until the air conditioner meets the defrosting condition, wherein the standard temperature drop value before updating is smaller than the standard temperature drop value after updating.
Because the defrosting is carried out when the temperature of the coil pipe of the outdoor heat exchanger is lower than the defrosting temperature in the prior art, the air conditioner frequently defrosts in severe environment, and the heating effect is poor.
The invention provides a solution, when the temperature drop value of the coil of the outdoor heat exchanger is larger than the standard drop value, the rotating speed of the outdoor fan can be adjusted to increase the heat exchange quantity of the outdoor heat exchanger and delay frosting, and meanwhile, the standard drop value is increased along with the temperature drop of the outdoor heat exchanger to avoid the rotating speed of the outdoor fan from reaching the maximum value too fast.
As shown in fig. 1, fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal of the embodiment of the invention is an air conditioner.
As shown in fig. 1, the air conditioner may include: a processor 1001 (e.g., a CPU), a communication bus 1002, a temperature sensor 1003, and a memory 1004. Wherein a communication bus 1002 is used to enable connective communication between these components. The memory 1004 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory 1004 may alternatively be a storage device separate from the processor 1001.
The air conditioner comprises a refrigerating system, and the temperature sensor 1003 is arranged on an outdoor heat exchanger of the refrigerating system and used for detecting the temperature of a coil of the outdoor heat exchanger. The outdoor fan in the refrigeration system adjusts the rotational speed under the control of the processor 1001.
Those skilled in the art will appreciate that the configuration of the air conditioner shown in fig. 1 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.
As shown in fig. 1, the memory 1004, which is a kind of computer storage medium, may include therein an operating system and an outdoor fan control program.
In the hardware architecture diagram of the television set shown in fig. 1, the processor 1001 may be configured to call up the outdoor fan control program stored in the memory 1004 and perform the following operations:
acquiring the temperature of a coil of an outdoor heat exchanger when the air conditioner is in heating operation;
determining a temperature drop value of the outdoor heat exchanger according to the acquired coil temperature, and judging whether the temperature drop value is smaller than a current standard temperature drop value, wherein when the coil temperature is acquired for the first time, the step of acquiring the coil temperature of the outdoor heat exchanger is continuously executed;
when the temperature drop value is smaller than the current standard temperature drop value, the step of obtaining the temperature of the coil pipe of the outdoor heat exchanger is continuously executed;
when the temperature drop value is greater than or equal to the current standard temperature drop value, the rotating speed of the outdoor fan is increased;
and updating the standard temperature drop value, and continuously executing the step of acquiring the temperature of the coil of the outdoor heat exchanger until the air conditioner meets the defrosting condition, wherein the standard temperature drop value before updating is smaller than the standard temperature drop value after updating.
Further, if the accumulated number of times reaches the preset number of times, after the current operating frequency is decreased by the preset frequency, the processor 1001 may call the outdoor fan control program stored in the memory 1004, and further perform the following operations:
calculating a temperature drop value according to the currently acquired coil temperature and the last acquired coil temperature;
or calculating a temperature drop value according to the currently acquired coil temperature and the initial coil temperature.
Further, after recording the accumulated number of times that the operating current value reaches the preset current value within the preset time, the processor 1001 may call the outdoor fan control program stored in the memory 1004, and further perform the following operations:
resetting the standard temperature drop value to a preset standard temperature drop value when the air conditioner meets the defrosting condition;
or resetting the standard temperature drop value to a preset standard temperature drop value when the air conditioner enters a heating mode.
Further, after determining whether the operating current value reaches the preset current value, the processor 1001 may call the outdoor fan control program stored in the memory 1004, and further perform the following operations:
acquiring the running time of the air conditioner during the heating running of the air conditioner;
and when the running time of the air conditioner is longer than the preset time, executing the step of acquiring the temperature of the coil pipe of the outdoor heat exchanger.
Further, after determining whether the operating current value reaches the preset current value, the processor 1001 may call the outdoor fan control program stored in the memory 1004, and further perform the following operations:
acquiring a rotation speed increment;
and adjusting the rotating speed of the outdoor fan according to the acquired rotating speed increment.
Further, after determining whether the operating current value reaches the preset current value, the processor 1001 may call the outdoor fan control program stored in the memory 1004, and further perform the following operations:
judging whether the rotating speed adjusted according to the current rotating speed is greater than the maximum rotating speed of the outdoor fan;
when the adjusted rotating speed is greater than or equal to the maximum rotating speed of the outdoor fan, adjusting the rotating speed of the outdoor fan to the maximum rotating speed;
and when the adjusted rotating speed is less than the maximum rotating speed of the outdoor fan, executing the step of adjusting the rotating speed of the outdoor fan according to the obtained rotating speed increment.
Referring to fig. 2, a first embodiment of an outdoor fan control method according to the present invention provides an outdoor fan control method, including the steps of:
step S10, acquiring the coil temperature of the outdoor heat exchanger when the air conditioner is in heating operation;
the temperature of the coil of the outdoor heat exchanger can be detected by a temperature sensor arranged on the outdoor heat exchanger, a temperature sensor can be arranged in the middle of the coil of the outdoor heat exchanger, and the temperature detected by the temperature sensor is used as the temperature of the coil of the outdoor heat exchanger; or, a plurality of temperature sensors can be arranged on the outdoor heat exchanger, the average value of each collected temperature sensor is calculated, and the calculated average value is used as the coil temperature of the outdoor heat exchanger; or, temperature sensors are arranged at different parts of the outdoor heat exchanger coil, and the detected temperature values are weighted and averaged according to the weight values corresponding to the temperature sensors to obtain the temperature of the coil. The scheme based on detecting the coil temperature is not limited to the above three schemes, and the above scheme is only an enumeration of the embodiments for detecting the coil temperature, and is not limited to the manner of obtaining the coil temperature of the outdoor heat exchanger.
Step S20, determining the temperature drop value of the outdoor heat exchanger according to the acquired coil temperature, wherein when the coil temperature is acquired for the first time, the step of acquiring the coil temperature of the outdoor heat exchanger is continuously executed;
step S30, judging whether the temperature drop value is smaller than the current standard temperature drop value,
the temperature drop value can be obtained by calculating with the initial value of the temperature of the coil pipe, or calculating with the temperature of the coil pipe obtained by the last detection, namely calculating the temperature drop value according to the temperature of the coil pipe obtained at present and the temperature of the coil pipe obtained at the last time; or calculating a temperature drop value according to the currently acquired coil temperature and the initial coil temperature.
This initial coil temperature is the coil temperature that the air conditioner got for the first time after entering the mode of heating, can obtain the coil temperature when the air conditioner gets into the mode of heating in this embodiment, then this coil temperature that obtains is initial coil temperature, also can obtain the coil temperature of outdoor heat exchanger after the air conditioner heats operation period, regards this coil temperature that obtains as initial coil temperature.
When the temperature drop value is smaller than the current standard temperature drop value, continuing to execute the step S10;
step S40, when the temperature drop value is larger than or equal to the current standard temperature drop value, the rotating speed of the outdoor fan is increased;
the rotating speed of the outdoor fan can be increased in various ways, for example, a rotating speed increment can be set, and a preset rotating speed increment is increased on the basis of the current rotating speed so as to increase the rotating speed of the outdoor fan; or, a plurality of wind gears can be set, the wind gear corresponding to the rotating speed of the outdoor fan is switched to the next wind gear, and the rotating speed of the current wind gear is smaller than that of the next wind gear.
And step S50, updating the standard temperature drop value, and continuing to execute the step of obtaining the coil temperature of the outdoor heat exchanger until the air conditioner meets the defrosting condition, wherein the standard temperature drop value before updating is smaller than the standard temperature drop value after updating.
Various ways for updating the standard temperature drop value are available, for example, a rotation speed drop value can be set, and the rotation speed of the outdoor fan is updated by subtracting a preset rotation speed drop value on the basis of the current rotation speed; or setting a plurality of standard temperature drop values, and switching the standard temperature drop values to a preset next standard temperature drop value according to a preset sequence, wherein the preset sequence is from large to small.
The defrosting condition of the air conditioner can be that the temperature of the coil of the outdoor heat exchanger is lower than the preset temperature, or that the temperature drop value of the coil of the indoor heat exchanger is lower than the preset temperature drop value, wherein the preset temperature drop value is lower than the standard temperature drop value.
According to the control method of the outdoor fan, when the temperature drop value of the coil of the outdoor heat exchanger is larger than the standard drop value, the rotating speed of the outdoor fan can be adjusted to increase the heat exchange quantity of the outdoor heat exchanger to delay frosting, meanwhile, the standard drop value is increased along with the temperature drop of the outdoor heat exchanger to prevent the rotating speed of the outdoor fan from reaching the maximum value too fast.
Further, a second embodiment of the outdoor fan control method according to the present invention is proposed based on the first embodiment, and in this embodiment, the outdoor fan control method further includes:
resetting the standard temperature drop value to a preset standard temperature drop value when the air conditioner meets the defrosting condition;
or resetting the standard temperature drop value to a preset standard temperature drop value when the air conditioner enters a heating mode.
In the scheme disclosed by the embodiment, the standard temperature drop value is reset after the defrosting mode is entered or the heating mode is entered, so that the standard temperature drop value is not too high when the heating mode is entered again, the accuracy of controlling the outdoor fan of the air conditioner is improved along with the continuous increase of the regulation of the rotating speed, and meanwhile, the regulation times of the outdoor fan are increased, and the heating effect is provided.
Further, referring to fig. 3, a third embodiment of the outdoor fan control method according to the present invention is proposed based on the first or second embodiment, and in this embodiment, the outdoor fan control method further includes:
step S60, acquiring the operation time of the air conditioner when the air conditioner is in heating operation;
when the operation time of the air conditioner is longer than the preset time, step S10 is executed, that is, the coil temperature of the outdoor heat exchanger is obtained.
When the air conditioner enters a heating mode, defrosting or starting may be performed just before, the temperature of the outdoor heat exchanger is higher at this moment, the temperature is taken as an initial temperature, which may cause an excessively large temperature drop value obtained through calculation, and then the temperature of the coil pipe of the outdoor heat exchanger can be obtained when the temperature of the outdoor heat exchanger is more normal after the air conditioner is operated for a period of time in a heating mode, so that the amount of the outdoor fan can be controlled more accurately.
Further, a fourth embodiment of the outdoor fan control method according to the present invention is proposed based on any one of the first to third embodiments, and in this embodiment, the step S40 includes:
acquiring a rotation speed increment;
and adjusting the rotating speed of the outdoor fan according to the obtained rotating speed increment.
It can be understood that, in order to further improve the accuracy of controlling the outdoor fan, the rotation speed increment may be updated after the rotation speed of the outdoor fan is adjusted according to the acquired rotation speed increment, and the updated rotation speed increment is greater than the rotation speed increment before updating, so that the rotation speed is rapidly increased to avoid frosting. The rotation speed increment may be a preset ratio, for example, the preset ratio is 10%, and the current rotation speed is 50, the adjusted rotation speed is 50 × 110% =55, the preset rotation speed increment may also be a preset rotation speed increment value, for example, the preset rotation speed increment value is 10, and the current rotation speed is 50, the adjusted rotation speed is 60.
Since the rotating speed calculated according to the preset increment may be greater than the maximum rotating speed allowed by the outdoor fan when the rotating speed is adjusted according to the preset increment, the rotating speed may be directly adjusted to the maximum rotating speed at this time, that is, after the step of obtaining the current rotating speed increment, the step S40 further includes:
judging whether the rotating speed adjusted according to the current rotating speed is greater than the maximum rotating speed of the outdoor fan;
when the adjusted rotating speed is greater than or equal to the maximum rotating speed of the outdoor fan, adjusting the rotating speed of the outdoor fan to the maximum rotating speed;
and when the adjusted rotating speed is less than the maximum rotating speed of the outdoor fan, executing the step of adjusting the rotating speed of the outdoor fan according to the obtained rotating speed increment.
In other modified embodiments, a plurality of wind gears may be provided, for example, 6 wind gears may be provided, and as the wind gear increases, the corresponding rotation speed increases, and then increasing the rotation speed of the outdoor fan includes adjusting the rotation speed of the outdoor fan from the current wind gear to the next wind gear.
In the scheme disclosed by the embodiment, the rotating speed of the outdoor fan is adjusted according to the rotating speed increment, so that the rotating speed of the outdoor fan is more accurately controlled.
The invention also provides an air conditioner, which comprises a memory, a processor and an outdoor fan control program which is stored on the memory and can run on the processor, the air conditioner also comprises a temperature sensor which is arranged on the outdoor heat exchanger and is used for detecting the temperature of the coil pipe of the outdoor heat exchanger, and the steps of the outdoor fan control method are realized when the outdoor fan control program is executed by the processor.
The present invention also provides a computer-readable storage medium having stored thereon an outdoor fan control program, which when executed by a processor, implements the steps of the outdoor fan control method as in the above embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of software products, which are stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and include instructions for enabling a terminal device (such as a mobile phone, a computer, a server, a television, or a network device) to execute the methods according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. An outdoor fan control method is characterized by comprising the following steps:
acquiring the temperature of a coil pipe of an outdoor heat exchanger after the air conditioner is operated for a period of time;
determining a temperature drop value of the outdoor heat exchanger according to the acquired coil temperature, and judging whether the temperature drop value is smaller than a current standard temperature drop value, wherein when the coil temperature is acquired for the first time, the step of acquiring the coil temperature of the outdoor heat exchanger is continuously executed;
when the temperature drop value is smaller than the current standard temperature drop value, continuing to execute the step of obtaining the coil temperature of the outdoor heat exchanger;
when the temperature drop value is greater than or equal to the current standard temperature drop value, increasing the rotating speed of the outdoor fan;
and updating the standard temperature drop value, and continuing to execute the step of obtaining the coil temperature of the outdoor heat exchanger until the air conditioner meets defrosting conditions, wherein the standard temperature drop value before updating is smaller than the standard temperature drop value after updating.
2. The outdoor fan control method according to claim 1, wherein the step of determining the temperature drop value of the outdoor heat exchanger based on the acquired coil temperature comprises:
calculating the temperature drop value according to the currently acquired coil temperature and the last acquired coil temperature;
or calculating the temperature drop value according to the currently acquired coil temperature and the initial coil temperature.
3. The outdoor fan control method according to claim 2, further comprising the steps of:
resetting the standard temperature drop value to a preset standard temperature drop value when the air conditioner meets the defrosting condition;
or when the air conditioner enters a heating mode, resetting the standard temperature drop value to a preset standard temperature drop value.
4. The outdoor fan control method according to claim 1, further comprising:
the method comprises the steps that when the air conditioner is in heating operation, the operation time length of the air conditioner is obtained;
and when the running time of the air conditioner is longer than the preset time, executing the step of acquiring the temperature of the coil pipe of the outdoor heat exchanger.
5. The outdoor fan controlling method of any one of claims 1 to 4, wherein the step of increasing the rotation speed of the outdoor fan comprises:
acquiring a rotation speed increment;
and adjusting the rotating speed of the outdoor fan according to the acquired rotating speed increment.
6. The outdoor fan control method of claim 5, wherein after the step of obtaining the rotation speed increment, the step of increasing the rotation speed of the outdoor fan further comprises:
judging whether the rotating speed adjusted according to the current rotating speed increment is larger than the maximum rotating speed of the outdoor fan;
when the adjusted rotating speed is greater than or equal to the maximum rotating speed of the outdoor fan, adjusting the rotating speed of the outdoor fan to the maximum rotating speed;
and when the adjusted rotating speed is less than the maximum rotating speed of the outdoor fan, executing the step of adjusting the rotating speed of the outdoor fan according to the obtained rotating speed increment.
7. An air conditioner, characterized in that the air conditioner comprises a memory, a processor and an outdoor fan control program stored on the memory and operable on the processor, the air conditioner further comprises a temperature sensor provided on the outdoor heat exchanger, the temperature sensor is used for detecting the coil temperature of the outdoor heat exchanger, and the outdoor fan control program, when executed by the processor, implements the steps of the outdoor fan control method according to any one of claims 1 to 6.
8. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon an outdoor fan control program, which when executed by a processor, implements the steps of the outdoor fan control method according to any one of claims 1 to 6.
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| CN201710466584.5A CN107101346B (en) | 2017-06-19 | 2017-06-19 | Outdoor fan control method, air conditioner, and computer-readable storage medium |
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| CN107940677A (en) * | 2017-10-31 | 2018-04-20 | 青岛海尔空调器有限总公司 | A kind of control method and device for slowing down air-conditioner outdoor unit frosting |
| CN109442679B (en) * | 2018-11-06 | 2020-10-30 | 广东美的制冷设备有限公司 | Control method and system of air conditioner and air conditioner |
| CN110006133B (en) * | 2019-04-16 | 2020-12-25 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting control method and device and air conditioner |
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