CN109323426B - Control method of air conditioner and air conditioner - Google Patents
Control method of air conditioner and air conditioner Download PDFInfo
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- CN109323426B CN109323426B CN201811332727.4A CN201811332727A CN109323426B CN 109323426 B CN109323426 B CN 109323426B CN 201811332727 A CN201811332727 A CN 201811332727A CN 109323426 B CN109323426 B CN 109323426B
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 239000000428 dust Substances 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000006837 decompression Effects 0.000 claims abstract description 7
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000006698 induction Effects 0.000 claims 1
- 239000004576 sand Substances 0.000 abstract description 18
- 238000004378 air conditioning Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003507 refrigerant Substances 0.000 description 10
- 230000009467 reduction Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioning, in particular to a control method of an air conditioner and the air conditioner. The invention aims to solve the problem that a condenser is easy to block in a dusty weather. To this end, the air conditioner of the invention includes compressor, condenser, throttling set and evaporator connected sequentially, the condenser disposes the outer fan, the evaporator disposes the inner fan, the air conditioner also includes the decompression branch road, the both ends of the decompression branch road communicate with liquid outlet and air intake of the compressor of the throttling set separately, set up the valve mechanism on the decompression branch road, the control method includes: acquiring an operation mode of an air conditioner; when the operation mode is a sand-dust mode, controlling the outer fan to operate at a reduced speed; the control valve mechanism is opened at the same time, before or after the outer fan starts to decelerate. Through the control mode, the control method of the air conditioner can reduce the suction of wind and sand in the outdoor unit and prolong the service life of the air conditioner on the premise of ensuring the operation effect of the air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to a control method of an air conditioner and the air conditioner.
Background
At present, the air conditioner is widely applied and becomes an essential household appliance in summer. However, for some areas with special circumstances, there are still some problems with the operation of the air conditioner.
For example, in the middle east and other areas, due to the high temperature in the year, the air conditioner needs to be continuously operated for a long time, but due to the weather characteristics of the areas, such as high wind, sand and dust, the air conditioner sucks a large amount of sand and dust and adheres to the surface of the condenser during the long-time operation, the accumulation of the sand and dust causes the blockage of the condenser, and the like, thereby seriously affecting the operation effect and the service life of the product.
Accordingly, there is a need in the art for a new control method of an air conditioner to solve the above-mentioned problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that a condenser is easily blocked in a dust and sand weather, the present invention provides a control method for an air conditioner, the air conditioner includes a compressor, a condenser, a throttling device, and an evaporator, which are sequentially connected, the condenser is provided with an external fan, the evaporator is provided with an internal fan, the air conditioner further includes a pressure reducing branch, two ends of the pressure reducing branch are respectively communicated with a liquid outlet of the throttling device and an air suction port of the compressor, a valve mechanism is arranged on the pressure reducing branch, and the control method includes:
acquiring an operation mode of the air conditioner;
when the operation mode is a sand-dust mode, controlling the outer fan to operate at a reduced speed;
controlling the valve mechanism to open at the same time, before or after the outer fan starts to slow down.
In a preferred embodiment of the above method for controlling an air conditioner, the method further includes:
controlling the compressor to maintain a current operating frequency while, before, or after the outer fan begins to slow down.
In a preferred embodiment of the method for controlling an air conditioner, the step of "controlling the external fan to operate at a reduced speed" further includes:
and controlling the rotating speed of the outer fan to be reduced to 50% -70% of the current rotating speed.
In a preferred embodiment of the control method of an air conditioner, after the step of "controlling the external blower to operate at a reduced speed", the control method further includes:
acquiring the temperature of a coil of the evaporator every set time;
selectively controlling the inner fan to run at a reduced speed based on the coil temperature.
In a preferred embodiment of the control method of the air conditioner, the step of selectively controlling the inner fan to run at a reduced speed based on the temperature of the coil further includes:
comparing the temperature of the coil pipe with the temperature threshold value corresponding to the current gear of the inner fan;
if the temperature of the coil pipe is smaller than the temperature threshold value, controlling the inner fan to be lowered to the next gear;
otherwise, controlling the inner fan to maintain the current gear.
In a preferred embodiment of the control method of the air conditioner, the step of controlling the inner fan to be lowered to the next gear if the temperature of the coil is less than the temperature threshold further includes:
if the temperature of the coil pipe is smaller than the temperature threshold value, further judging whether the current gear of the inner fan is the lowest gear;
if so, controlling the inner fan to maintain the current gear;
otherwise, controlling the inner fan to be lowered to the next gear.
In a preferred technical solution of the control method of the air conditioner, the gear of the inner fan includes a high speed, a medium speed, and a low speed, and correspondingly the temperature threshold includes a first threshold, a second threshold, and a third threshold, and the first threshold, the second threshold, and the third threshold are sequentially decreased.
In a preferred embodiment of the control method of the air conditioner, the valve mechanism is an electromagnetic valve.
The present invention also provides an air conditioner including a controller configured to be able to perform the control method of any one of the above-described preferred embodiments.
In the preferable technical scheme of the air conditioner, the air conditioner further comprises a remote controller, the remote controller is connected with the controller, a social free dust mode key is arranged on the remote controller, when the dust mode key is pressed down, the remote controller sends an instruction to the controller, and the instruction enables the controller to adjust the operation mode of the air conditioner to be the dust mode.
As can be understood by those skilled in the art, in a preferred technical solution of the present invention, the air conditioner includes a compressor, a condenser, a throttling device, and an evaporator connected in sequence, the condenser is configured with an external fan, the evaporator is configured with an internal fan, the air conditioner further includes a pressure reducing branch, two ends of the pressure reducing branch are respectively communicated with a liquid outlet of the throttling device and an air suction port of the compressor, a valve mechanism is disposed on the pressure reducing branch, and the control method includes: acquiring an operation mode of an air conditioner; when the operation mode is a sand-dust mode, controlling the outer fan to operate at a reduced speed; at the same time, before or after the outer fan begins to slow down, the control valve mechanism is opened and the compressor is controlled to maintain the current operating frequency.
Through the control mode, the control method of the air conditioner can reduce the suction of wind and sand in the outdoor unit and prolong the service life of the air conditioner on the premise of ensuring the operation effect of the air conditioner. Specifically, in the sand-dust weather, when the air conditioner enters into the sand-dust mode, the air conditioner can be started before, before or after the outer fan is controlled to run at a reduced speed, the control valve mechanism is opened and the compressor is controlled to maintain the current running frequency, the control method of the invention can make the liquid refrigerant part after passing through the throttling device in the air conditioning system enter the evaporator, the rest liquid refrigerant directly enters the gas-liquid separator from the air suction port of the compressor through the pressure reducing branch to unload the air conditioning system, the air suction temperature of the compressor is reduced, the compressor can continuously work when the outer fan operates at a reduced speed, thereby obviously reducing the suction air quantity of the outdoor unit on the premise of not influencing the use effect of a user, therefore, the outdoor unit can be prevented from sucking a large amount of dust, the condition that the condenser is dirty and blocked is avoided, the service life of the air conditioner is prolonged, and the use experience of a user is improved.
Drawings
A control method of an air conditioner and an air conditioner according to the present invention will be described with reference to the accompanying drawings. In the drawings:
FIG. 1 is a system diagram of an air conditioner of the present invention;
FIG. 2 is a flowchart illustrating a control method of an air conditioner according to the present invention;
fig. 3 is a logic diagram of a control method of an air conditioner according to the present invention.
List of reference numerals
1. A compressor; 2. a condenser; 3. a throttling device; 4. an evaporator; 5. an outer fan; 6. an inner fan; 7. a pressure reducing branch; 8. a valve mechanism.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the valve mechanism is illustrated in the drawings as a solenoid valve, this arrangement is not invariable and can be modified as required by those skilled in the art to suit particular applications. For example, the valve mechanism may be an electronic expansion valve or the like.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
First, referring to fig. 1 and 2, a control method of an air conditioner of the present invention will be described. Wherein, fig. 1 is a system schematic diagram of an air conditioner of the present invention; fig. 2 is a flowchart illustrating a control method of an air conditioner according to the present invention.
As shown in fig. 1, in order to solve the problem that a condenser 2 is easily blocked when the existing air conditioner operates in a dust environment, the air conditioner mainly comprises a controller, and a compressor 1, the condenser 2, a throttling device 3 and an evaporator 4 which are sequentially connected through a pipeline, wherein the condenser 2 is provided with an outer fan 5, the evaporator 4 is provided with an inner fan 6, the pipeline is filled with a refrigerant, and the refrigerant is driven by the compressor 1 to refrigerate the indoor environment through circulation among the components. Wherein the throttling means 3 is an electronic expansion valve. In particular, the air conditioner further comprises a pressure reducing branch 7, and two ends of the pressure reducing branch 7 are respectively communicated with a liquid outlet of the throttling device 3 and a suction port of the compressor 1, namely are connected with the evaporator 4 in parallel. Wherein, the decompression branch 7 is preferably communicated with the inlet of the gas-liquid separator of the compressor 1, a valve mechanism 8 is further arranged on the throttling branch, and the valve mechanism 8 is an electromagnetic valve. The controller can control the air conditioner to switch among different operation modes, control the power on and off and operation parameters of the compressor 1, the outer fan 5 and the inner fan 6, and control the opening degrees of the throttling device 3 and the valve mechanism 8. In addition, the air conditioner is also provided with a remote controller, the remote controller is connected with the controller in a wireless mode such as infrared or Bluetooth, a 'dust mode' button (or named Sand button) is arranged on the remote controller, and when the 'dust mode' button is pressed, the remote controller sends an instruction to the controller, so that the controller can control the air conditioner to switch the operation mode into the dust mode based on the instruction.
As shown in fig. 2, in the setting mode of the air conditioner, the control method of the present invention mainly includes the following steps:
s100, acquiring an operation mode of the air conditioner, for example, directly calling the current operation mode of the air conditioner by a controller;
s200, when the operation mode is the sand-dust mode, controlling the outer fan 5 to perform a speed reduction operation, for example, the controller calls the current operation mode and then determines, if the current operation mode is the sand-dust mode, controlling the outer fan 5 to perform the speed reduction operation, for example, the rotating speed of the outer fan 5 is reduced to 60% of the current rotating speed, and certainly, the specific value of the rotating speed reduction of the outer fan 5 is not unique, and a person skilled in the art can change the specific value so that the specific application scenario can be adapted to, for example, the rotating speed of the outer fan 5 can be reduced to 50% -70% or lower of the current rotating speed, and the like, as long as the phenomenon that the air conditioner pressure protection cannot operate due to the increase of the system pressure of the air conditioner does not occur after the rotating speed of the outer fan 5 is reduced;
s300, opening the control valve mechanism 8 at the same time, before or after the outer fan 5 starts to reduce the speed, and opening the control valve mechanism 8 to enable the pressure reduction branch 7 to be conducted if the outer fan 5 starts to reduce the speed, so that the impact of the system pressure rise on the compressor 1 when the outer fan 5 reduces the speed can be reduced, and certainly, the control valve mechanism 8 can be opened at the same time or after the outer fan 5 starts to reduce the speed;
s400, controlling the compressor 1 to maintain the current operating frequency at the same time, before or after the outer fan 5 starts to reduce the speed, for example, after the outer fan 5 starts to reduce the speed, controlling the compressor 1 to maintain the current operating frequency to operate in the whole operating process of the dust and sand mode, and of course, maintaining the operating frequency of the compressor 1 at the same time or before the outer fan 5 starts to reduce the speed.
As can be seen from the above description, the control method of the present invention switches the operation mode of the air conditioner to the dust mode in the dust weather, and can reduce the rotation speed of the external fan 5 on the premise of ensuring the refrigeration effect, thereby reducing the suction of wind and sand in the outdoor unit and the accumulation of dust and sand in the condenser 2, and improving the service life of the air conditioner. Specifically, in a dust and sand weather, the air conditioner enters a dust and sand mode, at the moment, the control valve mechanism 8 is opened and the compressor 1 is controlled to maintain the current running frequency by controlling the outer fan 5 to run at a reduced speed, the control method of the invention can ensure that part of the liquid refrigerant in the air conditioning system after passing through the throttling device 3 enters the evaporator 4, and the rest of the liquid refrigerant directly enters the gas-liquid separator from the air suction port of the compressor 1 through the pressure reducing branch 7 to unload the air conditioning system, thereby reducing the suction temperature of the compressor 1, ensuring that the compressor 1 can continuously work when the outer fan 5 runs at the reduced speed, obviously reducing the suction air volume of the outdoor unit on the premise of not influencing the use effect of a user, further avoiding the outdoor unit from sucking a large amount of dust and sand, avoiding the situation that the condenser 2 is dirty and blocked, and prolonging the service life of the air conditioner, the use experience of the user is improved.
Although the control unit of the air conditioner is not specifically described in this embodiment, those skilled in the art will understand that the form of the control unit is not exclusive, and the control unit may be a control chip disposed in an indoor unit, a controller specially used for executing the method of the present invention, or a functional module or a functional unit of a general air conditioner controller.
The control method of the present invention is further explained with further reference to fig. 1 and 2.
As shown in fig. 1 and 2, in a possible implementation, after step S200, the control method further includes:
acquiring the temperature of a coil of the evaporator 4 every set time length; and selectively controlling the inner fan 6 to run at a reduced speed based on the temperature of the coil. Specifically, after the air conditioner is operated in the sand wind mode for a period of time, for example, after 5 minutes of operation, the operation state of the air conditioner is already stable, at this time, the temperature of the coil of the evaporator 4 is obtained by the temperature sensor arranged on or near the coil of the evaporator 4, the temperature of the coil is compared with the temperature threshold corresponding to the current gear of the inner fan 6, and the inner fan 6 is selectively controlled to operate at a reduced speed based on the comparison result. For example, in a preferred embodiment, the gears of the inner fan 6 are divided into a high speed, a medium speed and a low speed, the temperature thresholds respectively include a first threshold, a second threshold and a third threshold corresponding to the three gears, and the first threshold, the second threshold and the third threshold decrease sequentially. After acquiring the temperature of the coil, the controller may determine a corresponding temperature threshold based on a gear at which the current inner fan 6 is located, then compare the temperature of the coil with the temperature threshold, if the temperature of the coil is smaller than the corresponding temperature threshold, further determine whether the gear of the current inner fan 6 is the lowest gear, if so, control the inner fan 6 to maintain the lowest gear, otherwise, control the inner fan 6 to decrease to the next gear, and then repeatedly acquire the temperature of the coil of the evaporator 4 at an interval of 5 minutes to perform determination again.
The control mode has the advantages that: firstly, as the lower the wind speed of the inner fan 6 is, the less the heat exchange amount of the refrigerant is, the lower the temperature of the refrigerant returning to the compressor 1 correspondingly is, and further the temperature of the refrigerant of the whole air conditioning system is correspondingly reduced, the working pressure of the compressor 1 can be further reduced, and the compressor 1 can be ensured to work continuously. Secondly, because the refrigerant temperature reduces, the temperature of evaporimeter 4 also maintains at lower level, and the air-out temperature of indoor air after 4 heat exchanges in evaporimeter also reduces by a wide margin to guarantee that user's body feels the temperature low, promote user experience by a wide margin.
Of course, it will be understood by those skilled in the art that the above-described preferred embodiments are merely illustrative of the principles of the present invention and are not intended to limit the scope of the present invention, and that those skilled in the art may adjust the above-described control scheme so that it is suitable for more specific application scenarios without departing from the principles of the present invention.
For example, in an alternative embodiment, the "dust mode" button may be integrated with the "mode" button of the remote controller, or provided on the indoor unit, etc., instead of being provided on the remote controller, and such adjustment of the setting position does not depart from the principle of the present invention.
For another example, in another alternative embodiment, the throttling device 3 may be a common expansion valve or a solenoid valve, etc. in addition to the electronic expansion valve; the valve mechanism 8 may be a valve type member such as an electronic expansion valve whose opening and closing can be controlled by a control unit, in addition to the electromagnetic valve; the remote controller may be connected to the controller in a wired manner, as well as in a wireless manner.
For another example, in another alternative embodiment, the set time period may be any time period other than 5 minutes as long as the time period is set to ensure that the operation state of the air conditioner has been stabilized.
For example, in another alternative embodiment, the number of gears of the inner fan 6, the specific value of the temperature threshold, and the like may be adjusted based on the actual application scenario, and these adjustments do not depart from the principle of the present invention and therefore all fall within the protection scope of the present invention.
For another example, in another alternative embodiment, the step of selectively controlling the inner fan 6 to run at a reduced speed based on the coil temperature may further comprise: simultaneously comparing the coil temperature with the first threshold, the second threshold and the third threshold; and adjusting the rotating speed of the inner fan 6 according to the comparison result. For example, when the coil temperature is less than a first threshold and greater than a second threshold, the inner fan 6 is controlled to be lowered to a medium-speed operation; if the coil temperature acquired again after 5 minutes is greater than the first threshold value or is still between the first threshold value and the second threshold value, the current gear of the inner fan 6 is maintained unchanged, and if the coil temperature acquired again after 5 minutes is less than the second threshold value and greater than the third threshold value or the coil temperature is less than the third threshold value, the inner fan 6 is directly controlled to be lowered to the low-speed operation.
For another example, the step of determining whether the inner fan 6 is in the lowest gear may be performed after the step of determining whether the coil temperature is less than the temperature threshold, or may be performed after the step of obtaining the coil temperature of the evaporator 4 and before the step of determining whether the coil temperature is less than the temperature threshold; or to adjust the steps to be performed just prior to entering the sand wind mode, etc., without departing from the principles of the invention.
A control procedure of the control method of the present invention is described below with reference to fig. 3. Fig. 3 is a logic diagram of a control method of an air conditioner according to the present invention.
In one possible embodiment, as shown in fig. 3, the air conditioner is operated in a cooling mode and the gear of the inner fan 6 is a high speed. In the Sand or dust storm weather, a user presses a Sand key on a remote controller, and the controller switches the operation mode of the air conditioner to be a Sand mode, namely, the electromagnetic valve is opened to enable the pressure reduction branch 7 to be conducted, the outer fan 5 is controlled to reduce the speed to 60% of the current rotating speed, and the current frequency of the compressor 1 is kept unchanged; after the operation is carried out for 5 minutes, the controller acquires the coil temperature of the evaporator 4, and if the coil temperature is less than a first threshold value, the controller controls the inner fan 6 to shift down to a middle gear; after the operation is carried out for 5 minutes, the temperature of the coil of the evaporator 4 is stable, the temperature of the coil of the evaporator 4 is collected again at the moment, and if the temperature of the coil is smaller than a second threshold value at the moment, the controller controls the inner fan 6 to downshift to a low gear again; after the operation is carried out for 5 minutes, the temperature of the coil pipe of the evaporator 4 is stable, the temperature of the coil pipe of the evaporator 4 is collected again, and if the temperature of the coil pipe is smaller than a third threshold value, the controller controls the inner fan 6 to be maintained in low-speed operation because the inner fan 6 is in the lowest gear at the moment. At the moment, the wind speed of the fan 6 in the air conditioner is low, the temperature sensed by the outlet wind is low, and the refrigeration requirement of a user is met.
In addition, the invention also provides an air conditioner, and a controller of the air conditioner can execute the control method in any one of the above embodiments.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. The utility model provides a control method of air conditioner, its characterized in that, the air conditioner is including compressor, condenser, throttling arrangement and the evaporimeter that connects gradually, the condenser disposes outer fan, the evaporimeter disposes interior fan, the air conditioner still includes the decompression branch road, the both ends of decompression branch road respectively with throttling arrangement's liquid outlet with the induction port intercommunication of compressor, be provided with valve mechanism on the decompression branch road, control method includes:
acquiring an operation mode of the air conditioner;
when the operation mode is a sand-dust mode, controlling the outer fan to operate at a reduced speed;
controlling the valve mechanism to open at the same time, before or after the outer fan starts to slow down.
2. The control method of an air conditioner according to claim 1, further comprising:
controlling the compressor to maintain a current operating frequency while, before, or after the outer fan begins to slow down.
3. The control method of an air conditioner according to claim 1, wherein the step of controlling the outer fan to be operated at a reduced speed further comprises:
and controlling the rotating speed of the outer fan to be reduced to 50% -70% of the current rotating speed.
4. The control method of an air conditioner according to any one of claims 1 to 3, wherein after the step of 'controlling the outside fan to run at a reduced speed', the control method further comprises:
acquiring the temperature of a coil of the evaporator every set time;
selectively controlling the inner fan to run at a reduced speed based on the coil temperature.
5. The method as claimed in claim 4, wherein the step of selectively controlling the inner fan down-speed operation based on the coil temperature further comprises:
comparing the temperature of the coil pipe with the temperature threshold value corresponding to the current gear of the inner fan;
if the temperature of the coil pipe is smaller than the temperature threshold value, controlling the inner fan to be lowered to the next gear;
otherwise, controlling the inner fan to maintain the current gear.
6. The method as claimed in claim 5, wherein the step of controlling the inner fan to be lowered to a next gear if the coil temperature is less than the temperature threshold further comprises:
if the temperature of the coil pipe is smaller than the temperature threshold value, further judging whether the current gear of the inner fan is the lowest gear;
if so, controlling the inner fan to maintain the current gear;
otherwise, controlling the inner fan to be lowered to the next gear.
7. The control method of the air conditioner according to claim 5, wherein the gear of the inner fan includes a high speed, a middle speed and a low speed, and the temperature threshold value includes a first threshold value, a second threshold value and a third threshold value, respectively, and the first threshold value, the second threshold value and the third threshold value are sequentially decreased.
8. The control method of an air conditioner according to claim 1, wherein the valve mechanism is a solenoid valve.
9. An air conditioner comprising a controller, characterized in that the controller is configured to be able to perform the control method of any one of claims 1 to 8.
10. The air conditioner as claimed in claim 9, further comprising a remote controller connected to the controller, wherein the remote controller is provided with a dust mode button, and when the dust mode button is pressed, the remote controller sends a command to the controller, the command enabling the controller to adjust the operation mode of the air conditioner to the dust mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811332727.4A CN109323426B (en) | 2018-11-09 | 2018-11-09 | Control method of air conditioner and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811332727.4A CN109323426B (en) | 2018-11-09 | 2018-11-09 | Control method of air conditioner and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109323426A CN109323426A (en) | 2019-02-12 |
| CN109323426B true CN109323426B (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811332727.4A Active CN109323426B (en) | 2018-11-09 | 2018-11-09 | Control method of air conditioner and air conditioner |
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| CN110243060A (en) * | 2019-06-20 | 2019-09-17 | 广东美的暖通设备有限公司 | Control method, air conditioner and computer readable storage medium |
| CN112240627B (en) * | 2019-07-16 | 2022-04-19 | 青岛海尔空调器有限总公司 | Air conditioner control method and air conditioner |
| CN112303766A (en) * | 2020-11-09 | 2021-02-02 | 广东立佳实业有限公司 | Humidity control assembly under each temperature range |
| CN115060016B (en) * | 2022-08-18 | 2022-11-04 | 泰美科环境仪器(昆山)有限公司 | Energy-saving control method and device for unloading flow regulation and refrigeration system |
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