CN112710067A - Air conditioner control method and device, air conditioner and readable storage medium - Google Patents
Air conditioner control method and device, air conditioner and readable storage medium Download PDFInfo
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- CN112710067A CN112710067A CN202011594686.3A CN202011594686A CN112710067A CN 112710067 A CN112710067 A CN 112710067A CN 202011594686 A CN202011594686 A CN 202011594686A CN 112710067 A CN112710067 A CN 112710067A
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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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- 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
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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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
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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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- 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
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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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
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner control method and device, an air conditioner and a readable storage medium. The air conditioner control method comprises the steps of obtaining an environment temperature value of an outer unit of the air conditioner; judging whether the environmental temperature value meets the anti-freezing dehumidification control condition or not; and when the anti-freezing dehumidification control condition is judged to be met, anti-freezing dehumidification control is carried out; the anti-freezing dehumidification control comprises: acquiring an evaporator temperature value; and adjusting the valve step value of a target electronic expansion valve of the air conditioner and the rotating speed value of an external fan of the air conditioner according to the evaporator temperature value so as to maintain the temperature of an evaporator coil. The embodiment of the invention solves the freezing problems of frosting, icing and the like of the internal unit when the air conditioner carries out dehumidification control.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to an air conditioner control method, an air conditioner control device, an air conditioner and a readable storage medium.
Background
At present, existing air conditioners have a dehumidification function, and a common method is as follows: after the dehumidification function of the air conditioner is started, the air conditioner starts to refrigerate, and the rotating speed of an internal machine is reduced so as to reduce the temperature of an evaporator; when the temperature of the evaporator is lower than the dew point temperature of the humid air, the air conditioner starts to dehumidify.
In reality, the air conditioner often uses the dehumidification function in a relatively humid time. For example, in the plum rain season, the indoor and outdoor environment temperature is not high, and is generally about 20 ℃; in addition, the temperature of the evaporator tends to be low due to the difference in heat exchange inside the air conditioner. In this case, freezing problems such as internal machine frost formation and icing are likely to occur. Therefore, the dehumidification effect is poor, and if the frost layer or the ice layer is too thick, water leakage of the internal machine can be caused, so that the user experience is seriously influenced.
Disclosure of Invention
The invention solves the problems that: when the air conditioner carries out dehumidification control in a relatively humid time, the freezing problems of frosting, icing and the like of an internal machine occur.
In order to solve the above problems, in one aspect, the present invention provides an air conditioner control method, including: acquiring an environment temperature value of an outer unit of the air conditioner; judging whether the environmental temperature value meets the anti-freezing dehumidification control condition or not; and when the anti-freezing dehumidification control condition is judged to be met, anti-freezing dehumidification control is carried out; the anti-freezing dehumidification control comprises: acquiring an evaporator temperature value; and adjusting the valve step value of a target electronic expansion valve of the air conditioner and the rotating speed value of an external fan of the air conditioner according to the evaporator temperature value so as to maintain the temperature of an evaporator coil.
Compared with the prior art, the air conditioner control method provided by the embodiment has the following advantages: judging whether to perform anti-freezing dehumidification control or not according to the environment temperature value of the outdoor unit, namely the outdoor temperature; and adjusting the valve step value of the electronic expansion valve and the rotating speed value of the outer fan according to the temperature value of the evaporator so as to realize anti-freezing dehumidification control. When the temperature value of the evaporator is low, the dehumidification effect can be ensured, and meanwhile, the freezing problem of the inner machine can be avoided.
In an embodiment of the present invention, the determining whether the ambient temperature value satisfies the anti-freezing and dehumidifying control condition includes: judging whether the environmental temperature value is smaller than a preset anti-freezing control temperature value or not; the anti-freezing dehumidification control conditions comprise: the ambient temperature value is less than the freeze protection control temperature value.
In an embodiment of the present invention, the adjusting the valve step value of the target electronic expansion valve of the air conditioner and the rotating speed value of the external fan of the air conditioner according to the evaporator temperature value includes: when the temperature value of the evaporator is not greater than a first preset temperature value, increasing the valve step value; when the temperature value of the evaporator is not greater than a second preset temperature value, reducing the rotating speed value; wherein the second preset temperature value is smaller than the first preset temperature value.
In an embodiment of the present invention, the adjusting a valve step value of a target electronic expansion valve of the air conditioner and a rotation speed value of an external fan of the air conditioner according to the evaporator temperature value further includes: when the evaporator temperature value is greater than a first preset temperature value, generating a valve step control instruction and a rotating speed control instruction; issuing the valve step control instruction to the target electronic expansion valve so as to control the opening of the target electronic expansion valve to be larger than a preset valve step value; and issuing the rotating speed control instruction to the outer fan so as to control the outer fan to act according to a preset rotating speed value.
In an embodiment of the present invention, the first preset temperature value is: adding a first variable coefficient on the basis of a preset inner disk frequency reduction protection temperature value to obtain the temperature value; the temperature value of the inner disc for frequency reduction protection is 0-5 ℃; the first coefficient of variation is 3 ℃.
In an embodiment of the present invention, the adjusting a valve step value of a target electronic expansion valve of the air conditioner and a rotation speed value of an external fan of the air conditioner according to the evaporator temperature value further includes: when the evaporator temperature value is not greater than the first preset temperature value and is greater than a second preset temperature value, generating a valve step increase instruction; and issuing the valve step increasing instruction to the target electronic expansion valve so as to control the target electronic expansion valve to increase the valve step.
In one embodiment of the invention, the valve step increase command comprises: a valve step increase rate; and the target electronic expansion valve increases the valve step according to the valve step increase rate on the basis of the preset valve step value.
In one embodiment of the present invention, the valve step increase command further comprises: valve step increase time; and the target electronic expansion valve increases the valve step according to the valve step increase rate and the valve step increase time on the basis of the preset valve step value.
In an embodiment of the present invention, the second preset temperature value is: adding a second variable coefficient on the basis of a preset inner disk frequency reduction protection temperature value to obtain the temperature value; the temperature value of the inner disc for frequency reduction protection is 0-5 ℃; the second coefficient of variation is 2 ℃.
In an embodiment of the present invention, the adjusting a valve step value of a target electronic expansion valve of the air conditioner and a rotation speed value of an external fan of the air conditioner according to the evaporator temperature value further includes: when the temperature value of the evaporator is not more than a second preset temperature value and is more than a preset inner disc frequency reduction protection temperature value, a rotating speed reduction instruction is also generated; and issuing the rotating speed reduction instruction to the outer fan so as to control the outer fan to reduce the rotating speed.
In one embodiment of the present invention, the rev reduction command includes a preset rev reduction value; and the outer fan acts according to a rotating speed value obtained by subtracting the rotating speed reduction value on the basis of the preset rotating speed value.
In one embodiment of the present invention, the anti-freeze dehumidification control further includes: when the temperature value of the evaporator is not greater than the inner disc frequency reduction protection temperature value, generating a frequency reduction instruction; and issuing the frequency reduction instruction to a compressor of the air conditioner so as to control the compressor to reduce the frequency.
In still another aspect, the present invention provides an air conditioner control apparatus, including: the temperature acquisition module is used for acquiring an environment temperature value of an external unit of the air conditioner; the condition judgment module is used for judging whether the environmental temperature value meets the anti-freezing dehumidification control condition or not; the low-temperature dehumidification module is used for performing anti-freezing dehumidification control when the anti-freezing dehumidification control condition is judged to be met; the method comprises the following steps: the temperature acquisition unit is used for acquiring an evaporator temperature value; and the control unit is used for adjusting the valve step value of a target electronic expansion valve of the air conditioner and adjusting the rotating speed value of an external fan of the air conditioner according to the evaporator temperature value.
In another aspect, the present invention further provides an air conditioner including a computer readable storage medium storing a computer program and a package IC, wherein when the computer program is read and executed by the package IC, the air conditioner implements the air conditioner control method according to any one of the above embodiments.
In still another aspect, the present invention further provides a readable storage medium, where the readable storage medium stores computer-executable instructions, and when the computer-executable instructions are read and executed by a processor, the readable storage medium controls an air conditioner where the readable storage medium is located to implement the air conditioner control method according to any one of the above embodiments.
Drawings
Fig. 1 is a flowchart illustrating an air conditioner control method according to a first embodiment of the present invention.
Fig. 2 is a flowchart illustrating an embodiment of a control method of the air conditioner shown in fig. 1.
Fig. 3 is a block diagram of an air conditioner control device according to a second embodiment of the present invention.
Fig. 4 is a block diagram of an air conditioner according to a third embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a readable storage medium according to a fourth embodiment of the present invention.
Detailed Description
At present, the existing air conditioner controls components such as a compressor and an internal fan of the air conditioner to perform corresponding actions according to an indoor environment temperature value and an indoor environment humidity value, so as to realize linkage control of indoor temperature and humidity. When the existing air conditioner carries out dehumidification control, the outdoor temperature is not considered; therefore, when dehumidification control is performed in a case where the temperature difference between the inside and the outside is small, the temperature of the evaporator of the air conditioner is likely to be low, and thus, the problem of freezing such as frost or icing of the inside unit is likely to occur, and the inner panel may be protected down.
In times of relatively high air humidity, such as plum rain, the air humidity is high and the temperature difference between the indoor and the outdoor is small, and when the air conditioner is started to dehumidify the indoor, the freezing problem is easy to occur.
[ first embodiment ] A method for manufacturing a semiconductor device
Based on this, the air conditioner control method provided by the first embodiment of the present invention can solve the freezing problems of the air conditioner, such as the frosting and icing of the internal unit, during the dehumidification process, and avoid the occurrence of the inner disc frequency reduction protection situation.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, a detailed description of the air conditioner control method is provided below with reference to the accompanying drawings.
Referring to fig. 1, it is a schematic flow chart of the air conditioner control method, which includes:
and S110, acquiring an ambient temperature value of an external unit of the air conditioner.
The environment temperature value is the temperature of the outdoor environment where the outdoor unit is located. The ambient temperature value can be obtained by arranging a temperature sensor on the outdoor unit. Of course, the temperature sensor may be disposed in an outdoor environment where the external unit is located, and is not limited to being disposed on the external unit.
And S120, judging whether the environmental temperature value meets the anti-freezing and dehumidifying control condition.
The anti-freezing dehumidification control condition may include determining whether the ambient temperature value is within a preset temperature value range, and if the ambient temperature value is within the temperature value range, the condition is satisfied. The anti-freezing dehumidification control condition may include determining a magnitude relationship between the ambient temperature value and a preset temperature value, for example, whether the ambient temperature value is greater than or not greater than the preset temperature value, and if the ambient temperature value satisfies the corresponding magnitude relationship, the condition is satisfied.
Of course, the anti-freezing dehumidification control condition may also include other dehumidification control conditions, such as the existing dehumidification control condition. For example, other dehumidification control conditions may include: the indoor ambient temperature reaches a corresponding temperature condition and/or the indoor ambient humidity reaches a corresponding humidity condition.
And S130, performing anti-freezing dehumidification control when the anti-freezing dehumidification control condition is judged to be met.
The anti-freezing dehumidification control includes, for example:
s131 acquires an evaporator temperature value.
The evaporator temperature value is the temperature of the evaporator of the internal unit of the air conditioner, and the value can be obtained through a temperature sensor, which is not described herein again.
S132, adjusting the valve step value of a target electronic expansion valve of the air conditioner and adjusting the rotating speed value of an external fan of the air conditioner according to the evaporator temperature value so as to maintain the temperature of an evaporator coil.
The target electronic expansion valve is an electronic expansion valve for controlling the flow of a refrigerant between an external machine and an internal machine of the air conditioner. And controlling the valve step value of the target electronic expansion valve to control the opening degree of the target electronic expansion valve, namely controlling the flow rate of a refrigerant between the external machine and the internal machine. And controlling the rotating speed value of the outer fan so as to control the working capacity of the outer fan. For example, at least one of the valve step value and the rotation speed value can be controlled to change according to the evaporator temperature value, and the corresponding component can be controlled to act.
The maintenance of the temperature of the evaporator coil, i.e., the avoidance of too low a temperature that could cause the evaporator coil to freeze or cause an internal coil under protection condition to occur. Such as maintaining the temperature of the evaporator coil at least the inner pan downconversion protection temperature value.
In the specific embodiment, the target electronic expansion valve and the outer fan are controlled to perform corresponding actions according to the temperature value of the evaporator in the dehumidification process, so that the dehumidification process can be refined. For example, controlling the sequence of actions of the two components, or the action mode. Compare in current dehumidification mode, can be according to the evaporimeter temperature value satisfies different situations, and the accurate control dehumidification avoids appearing the interior machine and freezes the problem to and the emergence of inner disc frequency reduction protection situation.
On the other hand, whether the anti-freezing dehumidification control is carried out or not is judged according to the environment temperature value, and the anti-freezing protection of the air conditioner due to the self abnormity, such as abnormity caused by internal welding blockage or abnormal air inlet can be avoided.
In a specific embodiment, the S120 includes, for example: judging whether the environmental temperature value is smaller than a preset anti-freezing control temperature value or not; correspondingly, the anti-freezing dehumidification control conditions comprise: the ambient temperature value is less than the freeze protection control temperature value.
Wherein the anti-freezing control temperature value may be an outdoor temperature range determined during a period when the air humidity is relatively high, for example, determined according to an outdoor temperature range in a plum rain season. Of course, the anti-freezing control temperature value can also be determined by referring to relevant factors of the machine model and the regional environment.
In a particular embodiment said anti-freeze control temperature value is between 20-30 ℃. A value may be determined as the anti-freezing control temperature value from 20 to 30 ℃ according to a model of the air conditioner and an installation region of the air conditioner. For example, when the installation region is a southern region, the anti-freezing control temperature value may be a higher value within the range, for example, 30 ℃, 29 ℃ or 28 ℃; when the installation region is the northern region, the anti-freezing control temperature value can be a lower value in the range, such as 20 ℃, 21 ℃ or 22 ℃; and when the installation zone is a middle zone, the anti-freezing control temperature value can take an intermediate value in the range, such as 24 ℃ or 25 ℃.
Of course, the anti-freezing control temperature value may take different values within the range according to different models.
In this embodiment, when the air humidity is high, such as in a rainy season, and the temperature difference between the inside and the outside is small, the freezing problems such as frost formation and icing of the inside unit and the occurrence of the inner disc frequency reduction protection are more likely to occur. Therefore, the anti-freezing control temperature value is determined to be 20-30 ℃ according to the outdoor environment temperature condition in plum rainy season, the problem of freezing of an internal machine caused by dehumidification of the air conditioner in plum rainy season can be effectively solved, and the condition of inner disc frequency reduction protection is avoided.
In a specific embodiment, the anti-freezing dehumidification control condition further includes: the air conditioner is in a refrigeration mode.
Because, the air conditioner is also relatively easy to have the freezing problem when in the cooling mode. The specific embodiment can also solve the problem that the indoor unit is frozen when the air conditioner dehumidifies in the refrigeration mode.
In a specific embodiment, the S132 includes, for example: when the temperature value of the evaporator is not greater than a first preset temperature value, increasing the valve step value; when the temperature value of the evaporator is not greater than a second preset temperature value, reducing the rotating speed value; wherein the second preset temperature value is smaller than the first preset temperature value.
The first preset temperature value and the second preset temperature value can be numerical values preset according to machine types and other parameters, and the anti-freezing control temperature value can be referred to. And when the temperature value of the evaporator is larger, controlling to increase the valve step value of the target electronic expansion valve so as to control the target electronic expansion valve to increase the opening degree and increase the flow of the refrigerant between the external machine and the internal machine. And when the temperature value of the evaporator is smaller, controlling to reduce the rotating speed value of the external fan.
In this embodiment, when the evaporator temperature value satisfies different conditions, the air conditioner respectively adjusts the target electronic expansion valve and the external fan. When the temperature value of the evaporator is low, the dehumidification effect can be ensured, and meanwhile, the freezing problem of the inner machine can be avoided.
Referring to fig. 2, it is a schematic flow chart of other embodiments of the air conditioner control method. In the embodiments, when the evaporator temperature value in S132 satisfies different conditions, one or both of the target electronic expansion valve and the external air blower are controlled to perform corresponding actions, so as to perform anti-freezing and dehumidification control. The specific embodiments are respectively as follows:
in a specific embodiment, the S132 includes: when the evaporator temperature value is greater than a first preset temperature value, generating a valve step control instruction and a rotating speed control instruction; issuing the valve step control instruction to a target electronic expansion valve of the air conditioner so as to control the opening of the target electronic expansion valve to be larger than a preset valve step value; and issuing the rotating speed control instruction to an outer fan of the air conditioner so as to control the outer fan to act according to a preset rotating speed value.
The first preset temperature value is, for example: b plus the first coefficient of variation. B is a preset inner disc frequency reduction protection temperature value, wherein B is, for example, between 0 and 5 ℃; the first coefficient of variation is, for example, 3 ℃. The inner disc frequency reduction protection temperature value and the first variable coefficient can be set according to machine types, for example, the temperature B can be preset to be 0 ℃, 2 ℃ or 5 ℃, and the setting mode of the anti-freezing control temperature value can be referred to for the temperature B and the temperature B.
The rotation speed control instruction may include the preset rotation speed value, and the rotation speed control instruction may be, for example, a motor driving instruction, and the motor of the outer fan operates at the preset rotation speed value according to the motor driving instruction. The valve step control command may include the preset valve step value.
The preset rotating speed value can be a rotating speed value of the air conditioner in a dehumidification mode or a rotating speed value in a normal running state; similarly, the preset valve step value may be a valve step value of the air conditioner in a dehumidification mode or a valve step value in a normal operation state.
In this embodiment, when the evaporator temperature value is large, that is, greater than B + 3; because the temperature of the evaporator is relatively high, the probability of freezing of the internal machine is low, the external fan and the target electronic expansion valve can be controlled to act according to a preset value, the preset value can be a normal value, and the air conditioner can operate according to a normal state. Of course, the preset valve step value and the preset rotation speed value can also be set to other values according to the model, and the setting mode of the anti-freezing control temperature value can be referred to.
In a specific embodiment, the target electronic expansion valve is an electromagnetic electronic expansion valve, and the valve step control instruction includes a voltage control signaling; or, the target electronic expansion valve is an electric electronic expansion valve, and the valve step control instruction includes a motor drive signaling.
Wherein, according to the different types of electronic expansion valves adopted by the air conditioner, corresponding signaling is generated, which is not described herein again.
In a specific embodiment, the S132 further includes: when the evaporator temperature value is not greater than the first preset temperature value and is greater than a second preset temperature value, generating a valve step increase instruction; and issuing the valve step increasing instruction to the target electronic expansion valve so as to control the target electronic expansion valve to increase the valve step.
Wherein, the second preset temperature value is, for example: b plus a second coefficient of variation. Wherein the second coefficient of variation is smaller than the first coefficient of variation, e.g. the second coefficient of variation is preset to 2 ℃. The setting mode of the second variable coefficient is similar to that of the first variable coefficient, and the setting mode of the anti-freezing control temperature value can also be referred to.
The step of controlling the target electronic expansion valve to increase may be: and increasing the valve step on the basis of the current valve step value of the target electronic expansion valve. The method can also be as follows: and increasing a preset increasing valve step value on the basis of the current valve step value so as to increase the opening degree of the target electronic expansion valve at one time. The method can also be as follows: the valve step value is continuously increased.
In one embodiment, the valve step increase command includes, for example, for the manner of continuously increasing the valve step value: a valve step increase rate; and the target electronic expansion valve increases the valve step according to the valve step increase rate on the basis of the preset valve step value.
The valve step increase rate can be a preset value, and the target electronic expansion valve continuously increases the valve step value according to the valve step increase rate on the basis of the preset valve step value; and may continue until the current valve step value of the target electronic expansion valve is maximum, or the target electronic expansion valve receives the next control instruction.
Further, the valve step increase instruction further includes, for example: valve step increase time; and the target electronic expansion valve increases the valve step according to the valve step increase rate and the valve step increase time on the basis of the preset valve step value.
The valve step increase rate and the valve step increase time may be preset values, and are not described herein again.
In this embodiment, the evaporator temperature value is between B +2 and B +3, and the evaporator temperature value is decreased to some extent, which is more likely to cause the freezing problem. The opening degree of the target electronic expansion valve is increased by controlling and increasing the valve step value of the target electronic expansion valve, the refrigerant flow of an internal machine is increased, the return air pressure is increased, the temperature of the evaporator is increased, and the problem that a coil pipe of the evaporator is frozen due to temperature reduction is avoided. In addition, different valve step increasing rates and valve step increasing time are set according to different models and other seasonal reasons or regional reasons so as to meet the performance requirements of different models. Therefore, under the condition that the temperature value of the evaporator is reduced, the air conditioner firstly controls the target electronic expansion valve to increase the opening degree, so that the freezing of the internal machine is avoided under the condition.
In a specific embodiment, the S132 further includes: when the temperature value of the evaporator is not more than a second preset temperature value and is more than a preset inner disc frequency reduction protection temperature value, a rotating speed reduction instruction is also generated; and issuing the rotating speed reduction instruction to the outer fan to control the outer fan to reduce the rotating speed.
The mode of controlling the outer fan to reduce the rotating speed according to the rotating speed reduction instruction can be as follows: reducing the rotating speed value to a target rotating speed value at one time, or continuously reducing the rotating speed value of the outer fan; the reduction may be performed on the basis of the preset rotation speed value, or may be performed on the basis of the current rotation speed value of the external wind turbine.
In this case, the outer fan may be controlled to decrease the rotation speed and the target electronic expansion valve may be controlled to increase the valve step value at the same time.
In one embodiment, the derating command includes a preset derating value; and the outer fan acts according to a rotating speed value obtained by subtracting the rotating speed reduction value on the basis of the preset rotating speed value.
Wherein, the same or similar mode as the mode comprises the following steps: the rotating speed reduction instruction comprises a preset target rotating speed value, the target rotating speed value is smaller than the preset rotating speed value, and the outer fan acts according to the target rotating speed value. And will not be described in detail herein.
In a specific embodiment, the inner disk down-conversion protection temperature value is 0-5 ℃; the second preset temperature value is as follows: adding a second variable coefficient on the basis of the inner disk frequency reduction protection temperature value to obtain a temperature value; the second coefficient of variation is 2 ℃.
The setting manner of the inner disk down-conversion protection temperature value and the second preset temperature value may refer to the related contents, and details are not repeated here.
In this specific embodiment, the evaporator temperature value is between B and B +2 ℃, and the evaporator temperature value is low, which is likely to cause a freezing problem. At this time, the target electronic expansion valve is controlled to increase the valve step value, and the rotating speed of the outer fan is controlled to be reduced, so that the heat exchange effect of an outer unit of the air conditioner is improved, the exhaust pressure and the return pressure are increased, the temperature of the evaporator is further increased, the temperature of the coil is increased, and the coil is prevented from being frozen.
The S132 in the above embodiments may further include controlling a compressor of the air conditioner to operate at a normal frequency, that is, in a case that the evaporator temperature value is greater than B, the frequency of the compressor may not be changed.
In a specific embodiment, the S132 further includes: when the temperature value of the evaporator is not greater than the inner disc frequency reduction protection temperature value, generating a frequency reduction instruction; and issuing the frequency reduction instruction to a compressor of the air conditioner so as to control the compressor to reduce the frequency.
In this specific embodiment, the evaporator temperature value is less than or equal to B, which is very likely to cause the freezing problem. At the moment, on the basis of controlling the target electronic expansion valve to increase the valve step value and controlling the outer fan to reduce the rotating speed, the compressor is controlled to reduce the frequency, the air suction is reduced, the compression ratio is reduced, and the temperature of a refrigerant is increased, so that the temperature of the evaporator is increased, and at the moment, the temperature of the coil pipe is increased, and the coil pipe is prevented from being frozen.
[ second embodiment ]
Referring to fig. 3, a block diagram of an air conditioner control device according to a second embodiment of the present invention is shown. The air conditioner control device 300 includes, for example: a temperature obtaining module 310, configured to obtain an ambient temperature value of an external unit of the air conditioner; the condition judgment module 320 is used for judging whether the environmental temperature value meets the anti-freezing dehumidification control condition; and a low-temperature dehumidification module 330, configured to perform anti-freezing dehumidification control when it is determined that the anti-freezing dehumidification control condition is satisfied.
The low temperature dehumidification module 330 includes, for example: a temperature acquisition unit 331 configured to acquire an evaporator temperature value; and a control unit 332 for adjusting a valve step value of a target electronic expansion valve of the air conditioner and adjusting a rotation speed value of an external fan of the air conditioner according to the evaporator temperature value.
In a specific embodiment, the temperature obtaining module 310, the condition determining module 320, the low temperature dehumidification module 330, and the temperature obtaining unit 331 and the control unit 332 included in the low temperature dehumidification module 330 of the air conditioner control device 300 cooperate to implement the air conditioner control method described in any one of the specific embodiments of the first embodiment, which is not described herein again.
[ third embodiment ]
Referring to fig. 4, a block diagram of an air conditioner according to a third embodiment of the present invention is shown. The air conditioner 400 includes, for example: packaged IC422 and computer readable storage medium 423; the computer-readable storage medium 423 stores a computer program, which is read and executed by the package IC422, and the air conditioner 400 implements the air conditioner control method according to any one of the embodiments of the first embodiment.
In one particular embodiment, the packaged IC422 is, for example, a processor chip that is electrically connected to the computer-readable storage medium 423 to read and execute the computer program. The packaged IC422 may also be a packaged circuit board, which is packaged with a processor chip that can read and execute the computer program; of course, the circuit board may also enclose the computer-readable storage medium 423.
The processor chip may further be provided with the air conditioner control device 300 according to the second embodiment, and the processor chip may implement the air conditioner control method according to the first embodiment through the air conditioner control device 300, which is not described herein again.
In one particular embodiment, the air conditioner 400 includes, for example, an outdoor unit 410 and an indoor unit 420. The outdoor unit 410 includes, for example, a compressor 411, an external fan 412, and an electronic expansion valve 413; the internal machine 420 is provided with, for example, an evaporator 421, a packaged IC422, and a computer-readable storage medium 423.
The air conditioner 400 further includes a plurality of temperature sensors for acquiring an outdoor environment temperature value where the outdoor unit 410 is located and acquiring a temperature value of the evaporator 421, for example. The plurality of temperature sensors are respectively in signal connection with the package IC 422. Referring to fig. 2, an embodiment of the air conditioner control method performed by the air conditioner 400 includes, for example:
the packaged IC422 of the air conditioner 400 obtains the outdoor environment temperature value T through one temperature sensor1. The preset anti-freezing control temperature value A of the packaged IC422 is 24 ℃, and the packaged IC422 judges T1If > 24 ℃ is established. When the packaged IC422 is judged not to be satisfied, the anti-freezing dehumidification control condition is not satisfied, and the anti-freezing dehumidification control is not executed; when the packaged IC422 is judged to be established, the anti-freezing dehumidification control is satisfiedAnd (4) performing anti-freezing dehumidification control.
The process of executing the anti-freeze dehumidification control includes, for example:
the packaged IC422 obtains the temperature value T of the evaporator 421 through one temperature sensor2. The temperature B of the inner disk frequency reduction protection preset by the packaging IC422 is 2 ℃, and the first variable coefficient is 3 ℃. Packaged IC422 determination T2If > 5 ℃ is established. When the package IC422 determines that the opening is established, the package IC422 controls the outer fan 412 to operate according to the preset rotation speed value V, and the package IC422 controls the electronic expansion valve 413 to open to the opening corresponding to the preset valve step value D; and the packaged IC422 continues the following process when judged not to be satisfied.
The second variable coefficient preset by the packaging IC422 is 2 ℃, and the packaging IC422 judges that the temperature is more than or equal to 5 DEG C2If > 4 ℃ is established. When the package IC422 determines that the opening degree of the electronic expansion valve 413 is greater than the opening degree corresponding to D, the package IC422 controls the electronic expansion valve 413 to increase the valve step value in addition to D; and the packaged IC422 continues the following process when judged not to be satisfied.
Packaged IC422 judging T or more at 4 ℃2If > 2 ℃ is established. When the package IC422 determines that the opening degree of the electronic expansion valve 413 is greater than the threshold value, the package IC422 controls the electronic expansion valve 413 to increase the valve step value, and at the same time, the package IC422 controls the rotation speed of the outer fan 412 to decrease based on the value V, so that the rotation speed of the outer fan 412 decreases while the opening degree of the electronic expansion valve 413 increases; and the packaged IC422 continues the following process when judged not to be satisfied.
Packaged IC422 judging that T is more than or equal to 2 DEG C2Whether or not this is true. When the package IC422 determines that the frequency is established, the package IC422 controls the compressor 411 to decrease the frequency.
As described above, in the air conditioner 400, when the temperature of the evaporator 421 satisfies different temperature requirements during the execution of the anti-freezing dehumidification control, different components are controlled to perform corresponding operations. The evaporator 421 can ensure the dehumidification effect when the temperature is lower, namely less than or equal to B +3 ℃; meanwhile, when the temperature of the evaporator 421 is too low, that is, less than or equal to B, the air conditioner 400 can timely reduce the frequency of the compressor 411, and timely protect the unit, thereby ensuring the operation reliability of the air conditioner 400.
[ fourth example ] A
Referring to fig. 5, a schematic structural diagram of a readable storage medium according to a fourth embodiment of the present invention is shown. The readable storage medium 500 is, for example, a nonvolatile memory, which is, for example: magnetic media (e.g., hard disks, floppy disks, and magnetic tape), optical media (e.g., CDROM disks and DVDs), magneto-optical media (e.g., optical disks), and hardware devices specially constructed for storing and executing computer-executable instructions (e.g., Read Only Memories (ROMs), Random Access Memories (RAMs), flash memories, etc.). The readable storage medium 500 has stored thereon computer-executable instructions 510. The readable storage medium 500 may be executed by one or more processors or processing devices to execute the computer-executable instructions 510 to cause an air conditioner in which the readable storage medium 500 is located to implement the air conditioner control method as described in the first embodiment.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (15)
1. An air conditioner control method, comprising:
acquiring an environment temperature value of an outer unit of the air conditioner;
judging whether the environmental temperature value meets the anti-freezing dehumidification control condition or not; and
when the anti-freezing dehumidification control condition is judged to be met, anti-freezing dehumidification control is carried out; the anti-freezing dehumidification control comprises:
acquiring an evaporator temperature value;
and adjusting the valve step value of a target electronic expansion valve of the air conditioner and the rotating speed value of an external fan of the air conditioner according to the evaporator temperature value so as to maintain the temperature of an evaporator coil.
2. The air conditioner control method according to claim 1, wherein said determining whether the ambient temperature value satisfies an anti-freezing and dehumidifying control condition comprises: judging whether the environmental temperature value is smaller than a preset anti-freezing control temperature value or not;
the anti-freezing dehumidification control conditions comprise: the ambient temperature value is less than the freeze protection control temperature value.
3. The air conditioner control method according to claim 1, wherein the adjusting a valve step value of a target electronic expansion valve of the air conditioner and a rotation speed value of an external fan of the air conditioner according to the evaporator temperature value comprises:
when the temperature value of the evaporator is not greater than a first preset temperature value, increasing the valve step value;
when the temperature value of the evaporator is not greater than a second preset temperature value, reducing the rotating speed value; wherein the second preset temperature value is smaller than the first preset temperature value.
4. The air conditioner control method according to claim 1, wherein the adjusting a valve step value of a target electronic expansion valve of the air conditioner and a rotation speed value of an external fan of the air conditioner according to the evaporator temperature value comprises:
when the evaporator temperature value is greater than a first preset temperature value, generating a valve step control instruction and a rotating speed control instruction;
issuing the valve step control instruction to the target electronic expansion valve so as to control the opening of the target electronic expansion valve to be larger than a preset valve step value;
and issuing the rotating speed control instruction to the outer fan so as to control the outer fan to act according to a preset rotating speed value.
5. The air conditioner control method according to claim 4, wherein the first preset temperature value is: adding a first variable coefficient on the basis of a preset inner disk frequency reduction protection temperature value to obtain the temperature value; wherein, the temperature value of the inner disk frequency reduction protection is 0-5 ℃; the first coefficient of variation is 3 ℃.
6. The air conditioner control method according to claim 4, wherein the adjusting a valve step value of a target electronic expansion valve of the air conditioner and a rotation speed value of an external fan of the air conditioner according to the evaporator temperature value further comprises:
when the evaporator temperature value is not greater than the first preset temperature value and is greater than a second preset temperature value, generating a valve step increase instruction;
and issuing the valve step increasing instruction to the target electronic expansion valve so as to control the target electronic expansion valve to increase the valve step.
7. The air conditioner control method according to claim 6, wherein the valve step increase instruction includes: a valve step increase rate;
and the target electronic expansion valve increases the valve step according to the valve step increase rate on the basis of the preset valve step value.
8. The air conditioner control method according to claim 7, wherein the valve step increase instruction further includes: valve step increase time;
and the target electronic expansion valve increases the valve step according to the valve step increase rate and the valve step increase time on the basis of the preset valve step value.
9. The air conditioner control method according to claim 6, wherein the second preset temperature value is: adding a second variable coefficient on the basis of a preset inner disk frequency reduction protection temperature value to obtain the temperature value; wherein, the temperature value of the inner disk frequency reduction protection is 0-5 ℃; the second coefficient of variation is 2 ℃.
10. The air conditioner control method according to claim 6, wherein the adjusting a valve step value of a target electronic expansion valve of the air conditioner and a rotation speed value of an external fan of the air conditioner according to the evaporator temperature value further comprises:
when the temperature value of the evaporator is not more than a second preset temperature value and is more than a preset inner disc frequency reduction protection temperature value, a rotating speed reduction instruction is also generated;
and issuing the rotating speed reduction instruction to the outer fan so as to control the outer fan to reduce the rotating speed.
11. The air conditioner control method according to claim 10, wherein the reduced rotation speed command includes a preset rotation speed reduction value;
and the outer fan acts according to a rotating speed value obtained by subtracting the rotating speed reduction value on the basis of the preset rotating speed value.
12. The air conditioner control method according to claim 10, wherein the anti-freezing dehumidification control further comprises:
when the temperature value of the evaporator is not greater than the inner disc frequency reduction protection temperature value, generating a frequency reduction instruction;
and issuing the frequency reduction instruction to a compressor of the air conditioner so as to control the compressor to reduce the frequency.
13. An air conditioner control device, comprising:
the temperature acquisition module is used for acquiring an environment temperature value of an external unit of the air conditioner;
the condition judgment module is used for judging whether the environmental temperature value meets the anti-freezing dehumidification control condition or not; and
the low-temperature dehumidification module is used for performing anti-freezing dehumidification control when judging that the anti-freezing dehumidification control condition is met; the method comprises the following steps:
the temperature acquisition unit is used for acquiring an evaporator temperature value;
and the control unit is used for adjusting the valve step value of a target electronic expansion valve of the air conditioner and adjusting the rotating speed value of an external fan of the air conditioner according to the evaporator temperature value so as to maintain the temperature of an evaporator coil.
14. An air conditioner comprising a computer-readable storage medium storing a computer program and a package IC, the computer program being read by and executed by the package IC, the air conditioner implementing the air conditioner control method according to any one of claims 1 to 12.
15. A readable storage medium, wherein the readable storage medium stores computer-executable instructions, which when read and executed by a processor, control an air conditioner in which the readable storage medium is located to implement the air conditioner control method according to any one of claims 1 to 12.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790508A (en) * | 2021-10-19 | 2021-12-14 | 宁波奥克斯电气股份有限公司 | APF automatic debugging control method and device, computer equipment and computer readable storage medium |
| CN113865067A (en) * | 2021-10-27 | 2021-12-31 | 美的集团武汉暖通设备有限公司 | Multi-split air conditioner, control method thereof and computer readable storage medium |
| CN114135978A (en) * | 2021-10-22 | 2022-03-04 | 宁波奥克斯电气股份有限公司 | Evaporator frosting control method and device and air conditioner |
| CN114234395A (en) * | 2021-11-25 | 2022-03-25 | 青岛海尔空调器有限总公司 | Method and device for protecting coil pipe and air conditioner |
| CN114353277A (en) * | 2021-11-30 | 2022-04-15 | 珠海格力电器股份有限公司 | Anti-frosting control method and anti-frosting air conditioner |
| CN115807995A (en) * | 2022-12-08 | 2023-03-17 | 珠海格力电器股份有限公司 | Air conditioner heating control method, device, equipment and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1510768A1 (en) * | 2003-08-27 | 2005-03-02 | Ebac Limited | Dehumidifier with a defrost control system |
| JP2012072957A (en) * | 2010-09-29 | 2012-04-12 | Panasonic Corp | Air conditioner |
| CN108168028A (en) * | 2018-01-04 | 2018-06-15 | 芜湖美智空调设备有限公司 | Method, mobile air conditioner and the storage medium of mobile air conditioner refrigeration defrosting |
| CN109945427A (en) * | 2019-03-12 | 2019-06-28 | 珠海格力电器股份有限公司 | A kind of air-conditioning equipment control method, device, storage medium and air-conditioning equipment |
| CN110017542A (en) * | 2019-04-17 | 2019-07-16 | 广东美的制冷设备有限公司 | Air conditioner, anti-freeze control method and computer readable storage medium |
| CN110469992A (en) * | 2019-07-28 | 2019-11-19 | 青岛海尔空调器有限总公司 | For the control method of air-conditioner defrosting, device and air-conditioning |
-
2020
- 2020-12-29 CN CN202011594686.3A patent/CN112710067A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1510768A1 (en) * | 2003-08-27 | 2005-03-02 | Ebac Limited | Dehumidifier with a defrost control system |
| JP2012072957A (en) * | 2010-09-29 | 2012-04-12 | Panasonic Corp | Air conditioner |
| CN108168028A (en) * | 2018-01-04 | 2018-06-15 | 芜湖美智空调设备有限公司 | Method, mobile air conditioner and the storage medium of mobile air conditioner refrigeration defrosting |
| CN109945427A (en) * | 2019-03-12 | 2019-06-28 | 珠海格力电器股份有限公司 | A kind of air-conditioning equipment control method, device, storage medium and air-conditioning equipment |
| CN110017542A (en) * | 2019-04-17 | 2019-07-16 | 广东美的制冷设备有限公司 | Air conditioner, anti-freeze control method and computer readable storage medium |
| CN110469992A (en) * | 2019-07-28 | 2019-11-19 | 青岛海尔空调器有限总公司 | For the control method of air-conditioner defrosting, device and air-conditioning |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790508A (en) * | 2021-10-19 | 2021-12-14 | 宁波奥克斯电气股份有限公司 | APF automatic debugging control method and device, computer equipment and computer readable storage medium |
| CN113790508B (en) * | 2021-10-19 | 2022-09-30 | 宁波奥克斯电气股份有限公司 | APF automatic debugging control method and device, computer equipment and computer readable storage medium |
| CN114135978A (en) * | 2021-10-22 | 2022-03-04 | 宁波奥克斯电气股份有限公司 | Evaporator frosting control method and device and air conditioner |
| CN113865067A (en) * | 2021-10-27 | 2021-12-31 | 美的集团武汉暖通设备有限公司 | Multi-split air conditioner, control method thereof and computer readable storage medium |
| CN113865067B (en) * | 2021-10-27 | 2022-12-20 | 美的集团武汉暖通设备有限公司 | Multi-split air conditioner, control method thereof and computer readable storage medium |
| CN114234395A (en) * | 2021-11-25 | 2022-03-25 | 青岛海尔空调器有限总公司 | Method and device for protecting coil pipe and air conditioner |
| CN114353277A (en) * | 2021-11-30 | 2022-04-15 | 珠海格力电器股份有限公司 | Anti-frosting control method and anti-frosting air conditioner |
| CN115807995A (en) * | 2022-12-08 | 2023-03-17 | 珠海格力电器股份有限公司 | Air conditioner heating control method, device, equipment and storage medium |
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Application publication date: 20210427 |