CN109654686B - Air conditioner control method, air conditioner and computer readable storage medium - Google Patents
Air conditioner control method, air conditioner and computer readable storage medium Download PDFInfo
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- CN109654686B CN109654686B CN201811560645.5A CN201811560645A CN109654686B CN 109654686 B CN109654686 B CN 109654686B CN 201811560645 A CN201811560645 A CN 201811560645A CN 109654686 B CN109654686 B CN 109654686B
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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
- F24F11/62—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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
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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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Abstract
The invention provides an air conditioner control method, an air conditioner and a computer readable storage medium, wherein the method comprises the steps of confirming that an obtained indoor temperature value is smaller than a first preset temperature value and an obtained outdoor temperature value is smaller than a second preset temperature value, and controlling the operation of the air conditioner in a preset mode; after the air conditioner enters a preset mode to operate, the refrigerating capacity is reduced, and the rotating speed of the fan of the indoor unit is higher than a first preset rotating speed threshold value. The invention also provides an air conditioner and a computer readable storage medium for realizing the method. The invention can adjust the refrigerating output of the air conditioner according to the indoor temperature and the outdoor temperature, and improve the comfort of human body feeling.
Description
Technical Field
The invention relates to the field of control of air conditioners, in particular to a fan control method, an air conditioner applying the method and a computer readable storage medium.
Background
An air conditioner is widely applied to various occasions as an important air temperature adjusting electric appliance, and is arranged in most of households, office places and commercial places at present. For example, people set a hanging air conditioner in a bedroom, and usually turn on the air conditioner all night to adjust the indoor temperature, so as to achieve the purpose of controlling the indoor temperature.
Generally, a wall air conditioner or a cabinet air conditioner is provided with an indoor unit and an outdoor unit, the indoor unit is provided with a fan, the outdoor unit is provided with a fan, and the air conditioner transfers heat through a refrigerant. The flow pipe of the cooling medium in the air conditioner is shown in fig. 1, an evaporator 18 is arranged in the indoor unit of the air conditioner, and a fan 17 of the indoor unit is arranged near the evaporator 18. An outdoor unit of an air conditioner is provided with a condenser 13, and a fan 14 of the outdoor unit is provided in the vicinity of the condenser 13. A throttle assembly is also arranged on the flow pipeline of the refrigerant, and the throttle assembly comprises an electronic expansion valve 11 and a capillary tube 12 which are connected in series.
In the air conditioner, an electronic expansion valve 11, a capillary tube 12, an evaporator 18, a compressor 15, and a condenser 13 are connected in order by a pipe to form a refrigerant flow circuit. When the air conditioner is operated, the refrigerant may sequentially pass through the electronic expansion valve 11, the capillary tube 12, the evaporator 18, the compressor 15, and the condenser 13. In cooling, the refrigerant changes from gas to liquid and releases heat when passing through the condenser 13, the temperature of the refrigerant decreases, the refrigerant absorbs heat when passing through the evaporator 18, the refrigerant changes from liquid to gas and increases in temperature, the refrigerant changes from gas to liquid again when passing through the condenser 13 again, and the cycle is repeated.
The flow velocity of the refrigerant in the flow pipeline can be controlled by controlling the opening degree of the electronic expansion valve 11, thereby controlling the refrigerating capacity of the air conditioner. For example, when the indoor temperature is high, the cooling capacity of the air conditioner can be increased, and the opening degree of the electronic expansion valve is large, whereas when the indoor temperature is low, the cooling capacity of the air conditioner can be decreased, and the opening degree of the electronic expansion valve is small. Generally, the control of the cooling capacity of the air conditioner is related to the indoor and outdoor temperature difference and the air supply capacity, for example, when the indoor and outdoor temperature difference is small, the cooling capacity of the air conditioner should be reduced to avoid the indoor temperature from being too low, and for example, when the indoor and outdoor temperature difference is large, the cooling capacity of the air conditioner should be increased.
When the air conditioner is operated at night, along with the reduction of the temperature of the outdoor environment, when the flow rate of a refrigerant in the air conditioner is still kept at a high speed, the refrigerating capacity of the air conditioner is increased, and under the condition that the indoor load is unchanged or slightly changed, the air supply temperature of an indoor unit is reduced, so that a human body feels cooler or becomes cold, and even the condition that indoor people are frozen and awakened when sleeping at night can occur.
Disclosure of Invention
A first object of the present invention is to provide an air conditioner control method that can dynamically adjust the cooling capacity of an air conditioner.
The second purpose of the invention is to provide an air conditioner applying the air conditioner control method.
A third object of the present invention is to provide a computer-readable storage medium implementing the above-mentioned air conditioner control method.
In order to achieve the first object of the present invention, the air conditioner control method provided by the present invention includes determining that the obtained indoor temperature value is less than a first preset temperature value, and controlling the operation of the air conditioner in a preset mode when the obtained outdoor temperature value is less than a second preset temperature value; after the air conditioner enters a preset mode to operate, the refrigerating capacity is reduced, and the rotating speed of the fan of the indoor unit is higher than a first preset rotating speed threshold value.
By the scheme, when the indoor temperature and the outdoor temperature are both low, the refrigerating capacity of the air conditioner is reduced, the rotating speed of a fan of the indoor unit is increased, the temperature difference between the air supply temperature and the air return temperature of the indoor unit can be reduced, the air conditioner can be enabled to work in a small temperature difference mode, the air supply temperature of the indoor unit can be increased in the working mode, indoor personnel can not feel cooler or colder, and the comfortableness of the personnel is improved.
In a preferred aspect, reducing the cooling capacity comprises: the flow speed of the refrigerant in the refrigerant flow pipeline is reduced, and the running frequency of a compressor of the air conditioner is reduced and/or the rotating speed of an outdoor unit fan is reduced.
Therefore, the control of the flow rate of the refrigerant and the control of the compressor and the outdoor unit fan can be realized, the regulation of the refrigerating capacity can be realized, and the difficulty of regulating the refrigerating capacity can be reduced due to the realization of the flow rate of the refrigerant, the frequency of the compressor or the rotating speed of the fan.
The refrigerant flowing pipeline is provided with a throttling component, and the throttling component comprises a stop valve and a flow limiting device which are connected in parallel; wherein, reducing the velocity of flow of refrigerant in refrigerant flow line includes: the shut-off valve is closed, preferably the flow restriction device is a capillary tube or an expansion valve.
It can be seen that after the stop valve is closed, the refrigerant can only flow through the flow limiting device, and the flow quantity in the flow pipeline in unit time can be reduced due to the flow limiting effect of the flow limiting device on the flow of the refrigerant, so that the flow speed of the refrigerant is reduced.
Further, the step of reducing the operating frequency of the compressor of the air conditioner comprises: the operating frequency of the compressor is reduced below a preset frequency. In this way, the compressor can be ensured to operate at a lower frequency, so that the operating frequency of the compression can be conveniently controlled.
Further, the method for reducing the rotating speed of the outdoor unit fan comprises the following steps: and reducing the rotating speed of the fan of the outdoor unit to be below a second preset rotating speed threshold value. Therefore, the rotating speed threshold of the outdoor unit fan in the preset mode is preset, and the rotating speed of the outdoor unit fan can be conveniently controlled to be lower than the preset rotating speed threshold.
The further scheme is that after entering the preset mode, whether the environmental condition of exiting the preset mode operation is met is judged, if yes, the operation of exiting the preset mode and the operation of entering the common mode are carried out, wherein after entering the common mode, the refrigerating capacity of the air conditioner is larger than that in the preset mode.
Therefore, after the air conditioner enters a preset mode, namely a small temperature difference working mode, the air conditioner is not always in the preset mode to be executed, but detects the current ambient temperature in real time, and after the current ambient condition is confirmed to meet the condition of entering the normal mode to operate, the air conditioner enters the normal mode to operate, namely the refrigerating capacity is increased, and the comfort of people is ensured.
Further, the meeting of the environmental condition for exiting the preset mode operation includes: the indoor temperature value is higher than a third preset temperature value and/or the outdoor temperature value is higher than a fourth temperature value, and the third temperature value is higher than the first temperature value; the fourth temperature value is greater than the second temperature value.
Therefore, the air conditioner can enter the common mode only when the indoor temperature is higher than the third temperature value or the outdoor temperature is higher than the fourth temperature value, so that the air conditioner can be prevented from repeatedly switching between the common mode and the preset mode to run, and the running stability of the air conditioner is ensured.
In a further aspect, the difference between the first temperature value and the third temperature value is equal to the difference between the second temperature value and the fourth temperature value.
Further, after entering the normal mode, the method for increasing the cooling capacity of the air conditioner comprises the following steps: and increasing the flow speed of the refrigerant in the refrigerant flow pipeline, specifically, opening a stop valve in the throttling assembly, wherein the stop valve is connected with the flow limiting device in parallel.
Like this, after opening the stop valve, the refrigerant can flow through from the stop valve, and need not flow through in current-limiting components such as capillary, can improve the velocity of flow of refrigerant to quick increase refrigerating output.
In order to achieve the third objective, the air conditioner provided by the present invention includes a casing, a circuit board is disposed in the casing, a processor and a memory are disposed on the circuit board, the memory stores a computer program, and the computer program implements the steps of the air conditioner control method when executed by the processor.
A preferred scheme is that a refrigerant flow pipeline is arranged in the air conditioner, a first throttling assembly is arranged on the refrigerant flow pipeline, the first throttling assembly comprises a stop valve and a flow limiting device which are connected in parallel, and preferably, the flow limiting device is a first capillary tube or an expansion valve.
Therefore, the stop valve and the flow limiting device which are connected in parallel are arranged, the flow speed of the refrigerant can be adjusted by controlling the opening and closing of the stop valve, the refrigerating capacity of the air conditioner is further controlled, the stop valve is opened when the refrigerating capacity needs to be increased, the stop valve is closed when the refrigerating capacity needs to be reduced, and the refrigerant flows through the flow limiting device.
The refrigerant flowing pipeline is provided with a second throttling component which is connected with the first throttling component in series, and the second throttling component comprises a second capillary tube and a second expansion valve which are connected in series.
It can be seen that two throttling assemblies are arranged, and in the preset mode and the normal mode, the refrigerant respectively passes through different paths in the first throttling assembly, specifically passes through the flow limiting device in the preset mode, and passes through the stop valve in the normal mode, so that the effect of reducing the flow speed of the refrigerant in the preset mode is realized. The second throttling component is used for adjusting the flow of the refrigerant when the air conditioner works normally, and can also ensure the normal adjustment of the flow of the refrigerant when the flow speed of the refrigerant is controlled by the first throttling component.
To achieve the third objective, the present invention provides a computer-readable storage medium having a computer program stored thereon, where the computer program is executed by a processor to implement the steps of the air conditioner control method.
Drawings
Fig. 1 is a schematic structural diagram of a refrigerant flow pipeline, a condenser, an evaporator and a compressor in a conventional air conditioner.
Fig. 2 is a flowchart of an embodiment of an air conditioner control method according to the present invention.
Fig. 3 is a schematic structural diagram of a refrigerant flow pipeline and a condenser, an evaporator and a compressor according to an embodiment of the air conditioner of the present invention.
The invention is further explained with reference to the drawings and the embodiments.
Detailed Description
The air conditioner control method is applied to an air conditioner, preferably, the air conditioner is a hanging type air conditioner or a cabinet type air conditioner which can be installed in a room, and particularly, the air conditioner is provided with a shell, a refrigerant flowing pipeline is arranged in the shell, a fan, an evaporator, a condenser and the like are arranged in the shell, a circuit board is further arranged in the shell of the air conditioner, the circuit board is provided with a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program to realize the air conditioner control method.
The embodiment of the air conditioner control method comprises the following steps:
the air conditioner control method is applied to an air conditioner, when the air conditioner is started to operate, the air conditioner operates in a common mode, specifically, the air conditioner operates according to established steps in the prior art, for example, the air conditioner enters a refrigeration mode, the refrigeration capacity of the air conditioner is determined according to the current indoor temperature value and the temperature value used for setting, and the air speed, the air direction, the air blowing mode and the like of air blown out of an indoor unit are controlled according to a received control signal.
Referring to fig. 2, the method of the present embodiment first executes step S1, and the air conditioner collects an indoor temperature value and an outdoor temperature value. Specifically, an air supply temperature sensor and an air return temperature sensor are arranged on an indoor unit of the air conditioner, the air supply temperature sensor is used for detecting the temperature of air blown out by the indoor unit of the air conditioner, and the air return temperature sensor is used for detecting the air return temperature of the indoor unit. In this embodiment, the obtained indoor temperature value is the temperature collected by the return air temperature sensor. And the outdoor unit is also provided with a return air temperature sensor for collecting the temperature value of the outdoor environment, and the temperature collected by the return air temperature sensor of the outdoor unit is used as the outdoor temperature value.
Then, step S2 is executed to determine whether the indoor temperature value is smaller than a first preset temperature value, and determine whether the outdoor temperature value is smaller than a second preset temperature value. In this embodiment, a first preset temperature value and a second preset temperature value are written in the memory in advance, and preferably, the first preset temperature value may be set to 28 ℃, and the second preset temperature value may be set to 38 ℃. In step S2, the indoor temperature value collected in step S1 is compared with a first preset temperature value, and it is determined whether the indoor temperature value is smaller than the first preset temperature value. Meanwhile, the collected outdoor temperature value needs to be compared with a second preset temperature value, and whether the outdoor temperature value is smaller than the second preset temperature value is judged.
If the indoor temperature value is less than the first preset temperature value and the outdoor temperature value is also less than the second preset temperature value, the determination result of step S2 is yes, and step S3 is executed. If the indoor temperature value is not less than the first preset temperature value or the second outdoor temperature value is not less than the second preset temperature value, the determination result in the step S2 is no, and the step S4 is executed.
If the judgment result of the step S2 is YES, the step S3 is executed and the air conditioner enters the preset mode operation. In this embodiment, the preset mode is a small temperature difference mode, that is, the simulated air conditioner operates in a mode where the difference between the return air temperature and the supply air temperature of the indoor unit is small. Specifically, after entering the small temperature difference operating mode, the refrigerating capacity is reduced and the rotating speed of the indoor unit fan is increased, and preferably, the rotating speed of the indoor unit fan can be controlled to be higher than a first preset rotating speed threshold value. In this embodiment, the first preset rotation speed threshold may be preset, and the first preset rotation speed threshold may be higher than the rotation speed of the fan when the air conditioner initially operates in the normal mode.
Therefore, when the indoor temperature and the outdoor temperature are lower, the temperature difference between the air supply temperature and the return air temperature of the indoor unit can be reduced by reducing the refrigerating capacity of the air conditioner and increasing the rotating speed of a fan of the indoor unit. Because the indoor temperature is lower, that is to say the return air temperature value is lower, and the supply air temperature is less than the return air temperature under the refrigeration mode, consequently reduces the difference of supply air temperature and return air temperature, can improve the supply air temperature of indoor set, and indoor personnel's sensation can not be colder or colder, improves the travelling comfort that personnel felt.
Preferably, the reducing of the cooling capacity of the air conditioner may be reducing a flow rate of the refrigerant in the refrigerant flow pipeline, and reducing an operation frequency of a compressor of the air conditioner or reducing a rotation speed of an outdoor unit fan, and of course, the rotation speed of the outdoor unit fan may also be reduced while the operation frequency of the compressor of the air conditioner is reduced.
In order to control the cooling capacity of the air conditioner, two sets of throttling assemblies are provided in the air conditioner applying the embodiment, as shown in fig. 3, a fan is provided in an indoor unit of the air conditioner, and a fan is also provided in an outdoor unit of the air conditioner. One evaporator 28 is provided in the indoor unit of the air conditioner, the fan 27 of the indoor unit is provided in the vicinity of the evaporator 28, one condenser 23 is provided in the outdoor unit of the air conditioner, and the fan 24 of the outdoor unit is provided in the vicinity of the condenser 23.
Two groups of throttling components are arranged on a flow pipeline of the refrigerant, wherein one group of throttling components comprises an electronic expansion valve 21 and a capillary tube 22 which are connected in series, and the other group of throttling components comprises a stop valve 31 and a capillary tube 32 which are connected in parallel. The stop valve 31 and the capillary tube 32 are connected in parallel to form a first set of throttling assembly 30, and the electronic expansion valve 21 and the capillary tube 22 form a second set of throttling assembly. In practical applications, capillary tube 32 acts as a flow restriction device and an electronic expansion valve may be used instead.
As shown in fig. 3, in the air conditioner, the electronic expansion valve 21, the capillary tube 22, the first throttle unit 30, the evaporator 28, the compressor 25, and the condenser 23 are connected in sequence by pipes to form a refrigerant flow circuit. When the air conditioner is operated, the refrigerant may sequentially flow through the electronic expansion valve 21, the capillary tube 22, the first group of throttling assembly 30, the evaporator 28, the compressor 25 and the condenser 23, and during cooling, the refrigerant releases heat when flowing through the condenser 23, the temperature of the refrigerant decreases, and the refrigerant absorbs heat when passing through the evaporator 28, the temperature of the refrigerant increases, and the temperature of the refrigerant decreases when passing through the condenser 23 again, and the cycle is repeated.
When the air conditioner is operated in the normal mode, the shutoff valve 31 is opened, and the refrigerant flows through the shutoff valve 31 but not through the capillary tube 32 due to the large cross-sectional area of the shutoff valve 31. At this time, the flow speed of the refrigerant is high, and the cooling capacity of the air conditioner is ensured. When the step S3 is executed, the air conditioner enters the preset mode to operate, and the flow rate of the refrigerant may be reduced by closing the cut-off valve 31. When the cutoff valve 31 is closed, the refrigerant cannot pass through the cutoff valve 31 and can only flow through the capillary tube 32, and since the cross-sectional area of the capillary tube 32 is small, the flow rate of the refrigerant passing through the capillary tube 32 per unit time is small, thereby achieving the purpose of reducing the flow rate of the refrigerant.
Meanwhile, as the flow rate of the refrigerant decreases, the operation frequency of the compressor 25 needs to be decreased, and the rotation speed of the fan of the outdoor unit needs to be decreased, thereby decreasing the cooling capacity of the air conditioner. Preferably, the operation frequency of the compressor 25 is reduced below a preset frequency threshold, and the rotation speed of the outdoor unit fan may be reduced below a second preset rotation speed threshold.
After the air conditioner enters the preset mode, the refrigerating capacity of the air conditioner is reduced, and the rotating speed of the fan of the indoor unit is increased, so that the difference value between the air supply temperature and the return air temperature of the air conditioner is reduced, namely the air supply temperature is improved, and after the air speed of the fan of the indoor unit is improved, the air blowing amount of the indoor unit is correspondingly increased, the air conditioner blows out a large amount of air with higher temperature, the indoor environment temperature can be improved, the feeling of indoor personnel is warmed, and the comfort of a human body is improved.
After entering the preset mode, the air conditioner executes step S5 to continue to collect the indoor temperature value and the outdoor temperature value, and determine whether the indoor temperature value is higher than the third preset temperature value or whether the outdoor temperature value is higher than the fourth preset temperature value. If the indoor temperature value is higher than the third preset temperature value or the outdoor temperature value is higher than the fourth preset temperature value, if the judgment result of the step S5 is yes, executing step S6; if the indoor temperature value is not higher than the third preset temperature value and the outdoor temperature value is not higher than the fourth preset temperature value, the judgment result of the step S5 is no, the step S3 is returned to, and the operation in the preset mode is maintained.
In this embodiment, the third preset temperature value and the fourth preset temperature value are both preset temperature values, and the third preset temperature value is higher than the first preset temperature value, and the fourth preset temperature value is higher than the second preset temperature value. Specifically, the third preset temperature value may be 31 ℃, that is, 3 ℃ higher than the first preset temperature value; the fourth preset temperature value may be 41 deg.c, i.e. 3 deg.c higher than the second preset temperature value. That is, in this embodiment, a difference between the third preset temperature value and the first preset temperature value is equal to a difference between the fourth preset temperature value and the second preset temperature value.
If the judgment result of the step S5 is yes, the step S6 is performed, and the air conditioner returns to the normal mode operation, that is, the cooling capacity of the air conditioner is increased. Specifically, the flow rate of the refrigerant in the refrigerant flow pipe may be increased, as shown in fig. 3, the stop valve 31 is opened, and at this time, the refrigerant may flow through the first group of throttling assemblies 30 through the stop valve 31 and may not flow through the capillary tube 32. Because the cross-sectional area of the stop valve 31 is large, the flow rate of the refrigerant flowing through the stop valve 31 per unit time is large, and the flow speed is high after the refrigerant flows through the stop valve 31.
And after returning to the common mode, can improve the operating frequency of compressor to improve the rotational speed of off-premises station fan, in order to cooperate the improvement of refrigerating output, ensure that the blow-off wind temperature of indoor set is lower, avoid the indoor temperature too high. In addition, the rotating speed of the fan of the indoor unit can be kept at a high rotating speed, and can also be slightly reduced, for example, after the indoor unit enters a normal mode from a preset mode, the rotating speed of the indoor unit is kept unchanged, but the air supply temperature is low, and the indoor temperature can be rapidly reduced.
It can be seen that, in this embodiment, the third preset temperature value is set to be higher than the first preset temperature value, and the fourth preset temperature value is set to be higher than the second preset temperature value, instead of setting the third preset temperature value to be equal to the first temperature value, setting the fourth preset temperature value to be equal to the second temperature value, it can be avoided that the air conditioner repeatedly enters and exits the small temperature difference mode when the indoor temperature value is near the first preset temperature value and the outdoor temperature value is near the second preset temperature value, thereby ensuring the stability of the air conditioner operation.
Of course, in practical application, the third preset temperature value may be set to be equal to the first preset temperature value, or the fourth preset temperature value may be set to be equal to the second preset temperature value. Alternatively, the difference between the third preset temperature value and the first preset temperature value is not necessarily equal to the difference between the fourth preset temperature value and the second preset temperature value, for example, the first preset temperature value may be 28 ℃, the third preset temperature value may be 31 ℃, and the difference between the first preset temperature value and the second preset temperature value is 3 ℃. While the second preset temperature value may be 38 c and the fourth preset temperature value may be 40 c, the difference between them being 2 c.
In addition, the judgment condition in step S5 may also be that the indoor temperature value is greater than the third preset temperature value, and the outdoor temperature value is greater than the fourth preset temperature value, that is, only when the indoor temperature value is greater than the third preset temperature value and the outdoor temperature value is also greater than the fourth preset temperature value, the operation in the preset mode will be exited.
After returning to the normal mode, step S7 is executed, and the air conditioner determines whether a control signal for stopping operation is received, for example, whether a signal for stopping operation sent by a remote controller is received, and if so, exits the control of the air conditioner. And if the signal for stopping the operation is not received, returning to execute the step S2, collecting the indoor temperature value and the outdoor temperature value again, comparing the collected indoor temperature value with the first preset temperature value, comparing the collected outdoor temperature value with the second preset temperature value, judging whether the condition for entering the preset mode operation is met, and if the condition for entering the preset mode operation is met again, executing the step S3 and entering the preset mode operation again.
If the judgment result of the step S2 is negative, the step S4 is executed, and the air conditioner is kept operating in the normal mode, that is, the cooling capacity is not reduced, and the flow rate of the refrigerant is maintained at the normal flow rate. And then executing step S8 to determine whether the air conditioner receives a signal for stopping operation, if so, exiting the control of the air conditioner, otherwise, returning to step S2 to determine whether the current ambient temperature, including the indoor temperature value and the outdoor temperature value, meets the condition of entering the preset mode for operation.
It can be seen that this embodiment air conditioner can make a round trip to switch between preset mode and normal mode through constantly judging indoor temperature value, outdoor temperature value, and is specific, and the preset mode of air conditioner is little difference in temperature operating mode, is the operating mode when the difference in temperature of air return temperature and air supply temperature of air conditioner's indoor set is less. This embodiment gets into when indoor temperature value, outdoor temperature value are lower and predetermines the mode operation to improve air supply temperature, when indoor temperature value, outdoor temperature value are higher, withdraw from and predetermine the mode operation and return to the normal mode operation, it is lower to ensure air supply temperature, makes indoor personnel's human sensation comparatively comfortable, avoids crossing the condition emergence of freezing and waking to appear because of air supply temperature.
The applicant found through experiments that when the wall surface temperature in a room is 30 ℃, the load of the air conditioner is 1073W when the temperature at one of the central positions in the room is stabilized at 28 ℃, and the load of the air conditioner is 1174W when the temperature at the central position in the room is stabilized at 27.4 ℃. When the wall temperature in the room is 32.5 ℃, the temperature of one position in the center of the room is stabilized at 29.5 ℃, and the load of the air conditioner is 1174W.
At night, if the wall surface temperature of a room is below 30 ℃, the air conditioner enters a preset mode to work, namely a small temperature difference mode to work, and for the air conditioner with the customized cold capacity of 3500W, the difference value between the air supply temperature and the return air temperature of the indoor unit is 7 ℃, and the air supply quantity is 599M3H, if the panel of the air conditioner is opened, the air supply quantity is increased by 100M3H, i.e. the air flow rate is increased to about 700M3And H, wherein the difference between the supply air temperature and the return air temperature is 6 ℃. Therefore, the difference value between the air supply temperature and the air return temperature is reduced by increasing the air supply quantity, namely the air supply temperature is reduced, and the human body feels more comfortable.
In the above experiment, the wall surface temperature is not equal to the indoor temperature nor the outdoor temperature by using the wall surface temperature in the room as a reference temperature, but generally, when the wall surface temperature is high, the return air temperature detected by the indoor unit is also high.
Air conditioner embodiment:
the air conditioner of this embodiment can be a hanging air conditioner or a cabinet air conditioner, and the air conditioner includes an indoor unit and an outdoor unit, the indoor unit is provided with a fan, an air supply temperature sensor and an air return temperature sensor, the outdoor unit is also provided with a fan, and a refrigerant flow pipeline of the air conditioner is provided with a first throttling component and a second throttling component, the first throttling component includes a stop valve and a current limiting device which are connected in parallel with each other, the current limiting device can be a capillary tube or an electronic expansion valve, and the second throttling component includes an electronic expansion valve and a capillary tube which are connected in series. The refrigerant flowing pipeline is also communicated with the condenser, the evaporator and the compressor, and when the refrigerant can flow, the refrigerant can sequentially flow through the electronic expansion valve, the capillary tube and the first throttling component of the second throttling component, the evaporator, the compressor and the condenser. The air conditioner can control the opening and closing of the stop valve to control the flow rate of the refrigerant, so that the refrigerating capacity can be adjusted.
The air conditioner is also provided with a circuit board, the circuit board is provided with a processor, a memory and a computer program which is stored in the memory and can run on the processor, the first wind pressure sensor, the second wind pressure sensor or the pressure difference sensor sends collected data to the processor, and the processor executes the computer program to realize the steps of the air conditioner control method.
For example, a computer program may be partitioned into one or more modules that are stored in a memory and executed by a processor to implement the modules of the present invention. One or more of the modules may be a series of computer program instruction segments capable of performing certain functions, which are used to describe the execution of the computer program in the terminal device.
The Processor may be a Central Processing Unit (CPU), or may be other general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory may be used to store computer programs and/or modules that the processor executes or otherwise executes and calls data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
A computer-readable storage medium:
the computer program stored in the memory of the air conditioner may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, all or part of the flow in the method according to the above embodiment may be implemented by a computer program, which may be stored in a computer readable storage medium and used by a processor to implement the steps of the air conditioner control method.
Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, in accordance with legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunications signals.
Finally, it should be emphasized that the present invention is not limited to the above-described embodiments, such as the change of the type of the blower, or the change of the type of the current-limiting device in the throttle assembly, and the like, and such changes should be included in the protection scope of the claims of the present invention.
Claims (13)
1. An air conditioner control method, comprising:
when the acquired indoor temperature value is confirmed to be smaller than a first preset temperature value and the acquired outdoor temperature value is smaller than a second preset temperature value, controlling the air conditioner to enter a small temperature difference mode for operation;
after the air conditioner enters the small temperature difference mode to operate, the refrigerating capacity is reduced, the rotating speed of a fan of an indoor unit is higher than a first preset rotating speed threshold value, the difference value between the air supply temperature and the return air temperature of the air conditioner is reduced, and the air supply temperature is increased;
the reducing the cooling capacity includes: reducing the flow speed of the refrigerant in the refrigerant flow pipeline, and reducing the running frequency of a compressor of the air conditioner and/or reducing the rotating speed of an outdoor unit fan;
a first throttling assembly is arranged on the refrigerant flowing pipeline and comprises a stop valve and a flow limiting device which are connected in parallel;
reducing the flow velocity of the refrigerant in the refrigerant flow conduit comprises: and closing the stop valve.
2. The air conditioner control method according to claim 1, characterized in that:
the flow limiting device is a first capillary tube or a first expansion valve.
3. The air conditioner control method according to claim 1, characterized in that:
reducing the compressor operating frequency of the air conditioner includes: reducing the operating frequency of the compressor below a preset frequency.
4. The air conditioner control method according to claim 1, characterized in that:
reducing the rotational speed of the outdoor unit fan includes: and reducing the rotating speed of the fan of the outdoor unit to be below a second preset rotating speed threshold value.
5. The air conditioner control method according to any one of claims 1 to 4, further comprising:
after entering the small temperature difference mode, judging whether the environmental condition of exiting the small temperature difference mode operation is met, if so, exiting the small temperature difference mode operation and entering the normal mode operation, wherein after entering the normal mode, the refrigerating capacity of the air conditioner is larger than that in the small temperature difference mode.
6. The air conditioner control method according to claim 5, characterized in that:
the environmental conditions for exiting the small temperature difference mode operation include: the indoor temperature value is higher than a third preset temperature value and/or the outdoor temperature value is higher than a fourth preset temperature value.
7. The air conditioner control method according to claim 6, characterized in that:
the third preset temperature value is greater than the first preset temperature value;
the fourth preset temperature value is greater than the second preset temperature value.
8. The air conditioner control method according to claim 7, wherein:
the difference value between the first preset temperature value and the third preset temperature value is equal to the difference value between the second preset temperature value and the fourth preset temperature value.
9. The air conditioner control method according to claim 5, characterized in that:
after entering the normal mode, increase the refrigerating output of air conditioner, include: the flow speed of the refrigerant in the refrigerant flow pipeline is increased.
10. The air conditioner control method according to claim 9, characterized in that:
increasing the flow rate of the refrigerant in the refrigerant flow conduit comprises: opening a shut-off valve in the first throttling assembly, wherein the shut-off valve is connected in parallel with the flow restricting device.
11. An air conditioner, characterized by comprising a housing, wherein a circuit board is arranged in the housing, a processor and a memory are arranged on the circuit board, the memory stores a computer program, and the computer program realizes each step of the air conditioner control method according to any one of claims 1 to 10 when being executed by the processor.
12. The air conditioner according to claim 11, wherein:
and a second throttling assembly connected with the first throttling assembly in series is arranged on the refrigerant flowing pipeline, and the second throttling assembly comprises a second capillary tube and a second expansion valve which are connected in series.
13. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program, when executed by a processor, implements the steps of the air conditioner control method according to any one of claims 1 to 10.
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| CN110068120B (en) * | 2019-04-23 | 2021-08-27 | 广东美博制冷设备有限公司 | Refrigeration control method and device of air conditioner |
| CN110500747B (en) * | 2019-08-30 | 2021-10-29 | 郑州海尔空调器有限公司 | Control method of air conditioner |
| CN110594978A (en) * | 2019-09-29 | 2019-12-20 | 天津健智者行空调技术有限公司 | Energy-saving central air conditioning automatic control system |
| CN111169251B (en) * | 2020-01-02 | 2021-10-29 | 珠海格力电器股份有限公司 | Control method for air conditioner high-voltage protection, computer readable storage medium and air conditioner |
| CN113551365B (en) * | 2021-07-30 | 2022-09-27 | 佛山市顺德区美的电子科技有限公司 | Air conditioner, control method thereof, and computer-readable storage medium |
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