CN110207330B - Air conditioner and control method and device thereof - Google Patents
Air conditioner and control method and device thereof Download PDFInfo
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- CN110207330B CN110207330B CN201910482326.5A CN201910482326A CN110207330B CN 110207330 B CN110207330 B CN 110207330B CN 201910482326 A CN201910482326 A CN 201910482326A CN 110207330 B CN110207330 B CN 110207330B
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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
- F24F11/70—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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner and a control method and a control device thereof, wherein the method comprises the following steps: recognizing that the air conditioner needs to enter a dehumidification mode currently; acquiring a first temperature and a reference temperature on a side road in an air conditioner; the opening degree of the throttling element on the auxiliary road is adjusted according to the first temperature and the reference temperature. The control method of the invention can ensure the refrigerating and heating effects of the air conditioner, reduce the refrigerant noise generated when the opening of the throttling element on the auxiliary path is larger, reduce the noise of the whole machine and improve the comfort level of users.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a control method of an air conditioner, a control device of the air conditioner and the air conditioner with the control device.
Background
Three pipe system small multiplex internal machines include: main heat exchanger, supplementary heat exchanger and refrigeration part. In the three-pipe small multi-connected indoor unit constant temperature dehumidification process, when the set dehumidification temperature is high, the gas refrigerant flow of the auxiliary heat exchanger needs to be increased to generate more heat and neutralize with cold air of the main heat exchanger so as to generate hot air with higher temperature, however, the heat exchange of the heat exchanger can be insufficient along with the increase of the refrigerant flow of the auxiliary heat exchanger, and particularly, the phenomenon is more obvious when the low wind gear is operated. Therefore, a part of gas refrigerant of the auxiliary heat exchanger enters the main flow path to generate gas-liquid two-phase refrigerant, and the gas-liquid two-phase refrigerant of the main flow path generates refrigerant noise of water flow when being throttled by the main path electronic expansion valve, thereby seriously influencing the comfort of users.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, a first objective of the present invention is to provide a control method for an air conditioner, which can reduce refrigerant noise generated when the opening of the throttling element on the auxiliary path is large, reduce noise of the whole air conditioner, and improve comfort of users while ensuring cooling and heating effects of the air conditioner.
A second object of the present invention is to provide a control device for an air conditioner.
A third object of the present invention is to provide an air conditioner.
A fourth object of the invention is to propose an electronic device.
A fifth object of the present invention is to propose a computer-readable storage medium.
In order to achieve the above object, a first embodiment of the present invention provides a control method for an air conditioner, including the steps of: recognizing that the air conditioner needs to enter a dehumidification mode currently; acquiring a first temperature and a reference temperature on a side road in the air conditioner; and adjusting the opening degree of a throttling element on the auxiliary road according to the first temperature and the reference temperature.
According to the control method of the air conditioner, when the fact that the air conditioner needs to enter the dehumidification mode currently is recognized, the first temperature and the reference temperature of the auxiliary road in the air conditioner are obtained, and the opening degree of the throttling element on the auxiliary road is adjusted according to the first temperature and the reference temperature. Therefore, the method can ensure the refrigerating and heating effects of the air conditioner, reduce the refrigerant noise generated when the opening of the throttling element on the auxiliary path is larger, reduce the noise of the whole machine and improve the comfort level of users.
In addition, the control method of the air conditioner according to the above embodiment of the present invention may further have the following additional technical features:
according to an embodiment of the present invention, the adjusting the opening degree of the throttling element on the auxiliary road according to the first temperature and the reference temperature includes: and identifying a target temperature range in which the first temperature is located, and adjusting the opening degree of the throttling element according to the target temperature range, wherein the reference temperature comprises a first reference temperature and a second reference temperature, the first reference temperature is less than the second reference temperature, and the target temperature range is determined according to the first reference temperature and the second reference temperature.
According to an embodiment of the present invention, the adjusting the opening degree of the throttling element according to the target temperature range includes: recognizing that the target temperature range is a first temperature range, and controlling the throttling element to close at a first step length from the current opening degree according to a preset time interval, wherein the first temperature range is greater than the second reference temperature; recognizing that the target temperature range is a second temperature range, controlling the throttling element to close at a second step length from the current opening degree according to a preset time interval, wherein the second temperature range is greater than or equal to the first reference parameter and less than or equal to the second reference parameter; and recognizing that the target temperature range is a third temperature range, acquiring the set temperature and the ambient temperature of the air conditioner, and adjusting the opening of the throttling element according to the set temperature and the ambient temperature, wherein the third temperature range is smaller than the first reference parameter.
According to an embodiment of the present invention, the adjusting the opening degree of the throttling element on the auxiliary road according to the first temperature and the reference temperature further includes: acquiring the current pressure of an auxiliary road in the air conditioner, and acquiring the corresponding saturation temperature according to the current pressure; and acquiring a first temperature difference between the saturation temperature and the first temperature, and adjusting the opening of the throttling element according to a target temperature difference range in which the first temperature difference is positioned.
According to an embodiment of the present invention, the adjusting the opening degree of the throttling element according to the target temperature difference range in which the first temperature difference is located includes: recognizing that the target temperature difference range is a first temperature difference range, controlling the throttling element to close from the current opening degree according to a preset time interval in a third step; recognizing that the target temperature difference range is a second temperature difference range, and controlling the throttling element to close from the current opening according to a preset time interval by a fourth step length; and recognizing that the target temperature difference range is a third temperature difference range, acquiring the set temperature and the ambient temperature of the air conditioner, and adjusting the opening degree of the throttling element according to the set temperature and the ambient temperature.
According to an embodiment of the present invention, the adjusting the opening degree of the throttling element according to the set temperature and the ambient temperature includes: acquiring a second temperature difference between the set temperature and the environment temperature at the previous moment and a third temperature difference between the set temperature and the environment temperature at the current moment; acquiring a difference value between the second temperature difference and the third temperature difference; recognizing that the difference is smaller than or equal to a set value, and controlling the throttling element to close from the current opening degree according to a preset time interval in a fifth step length; and recognizing that the difference is larger than a set value, and controlling the throttling element to be opened at a sixth step length from the current opening according to a preset time interval.
According to an embodiment of the present invention, after the adjusting the opening degree of the throttling element, the method further comprises: and continuously acquiring the ambient temperature, and continuously adjusting the opening of the throttling element according to the temperature difference between the set temperature and the ambient temperature.
According to an embodiment of the present invention, after the adjusting the opening degree of the throttling element, the method further comprises: and continuously acquiring the first temperature and the reference temperature, and continuously adjusting the opening of the throttling element according to the first temperature and the reference temperature.
In order to achieve the above object, a second embodiment of the present invention provides a control device for an air conditioner, including: the identification module is used for identifying that the air conditioner needs to enter a dehumidification mode currently; the acquisition module is used for acquiring a first temperature and a reference temperature on a secondary road in the air conditioner; and the control module is used for adjusting the opening of the throttling element on the auxiliary road according to the first temperature and the reference temperature.
According to the control device of the air conditioner, when the recognition module recognizes that the air conditioner needs to enter the dehumidification mode at present, the acquisition module acquires the first temperature and the reference temperature of the auxiliary road in the air conditioner, and the control module adjusts the opening degree of the throttling element on the auxiliary road according to the first temperature and the reference temperature. Therefore, the device can reduce the refrigerant noise generated when the opening of the throttling element on the auxiliary road is larger while ensuring the refrigerating and heating effects of the air conditioner, reduce the noise of the whole machine and improve the comfort level of users.
In addition, the control device of the air conditioner according to the above embodiment of the present invention may further have the following additional technical features:
according to an embodiment of the invention, the control module adjusts the opening degree of the throttling element on the auxiliary road according to the first temperature and a reference temperature, and is used for identifying a target temperature range in which the first temperature is located and adjusting the opening degree of the throttling element according to the target temperature range, wherein the reference temperature comprises a first reference temperature and a second reference temperature, the first reference temperature is smaller than the second reference temperature, and the target temperature range is determined according to the first reference temperature and the second reference temperature.
According to one embodiment of the invention, the control module adjusts the opening degree of the throttling element according to the target temperature range, and is used for identifying the target temperature range as a first temperature range, and controlling the throttling element to close at a first step length according to a preset time interval from the current opening degree, wherein the first temperature range is greater than the second reference temperature; recognizing that the target temperature range is a second temperature range, controlling the throttling element to close at a second step length from the current opening degree according to a preset time interval, wherein the second temperature range is greater than or equal to the first reference parameter and less than or equal to the second reference parameter; and recognizing that the target temperature range is a third temperature range, acquiring the set temperature and the return air temperature of the air conditioner, and adjusting the opening of the throttling element according to the set temperature and the ambient temperature, wherein the third temperature range is smaller than the first reference parameter.
According to an embodiment of the present invention, the control module adjusts an opening degree of a throttling element on the auxiliary road according to the first temperature and a reference temperature, and is further configured to obtain a current pressure of the auxiliary road in the air conditioner, and obtain a corresponding saturation temperature according to the current pressure; and acquiring a first temperature difference between the saturation temperature and the first temperature, and adjusting the opening of the throttling element according to a target temperature difference range in which the first temperature difference is positioned.
According to an embodiment of the invention, the control module adjusts the opening degree of the throttling element according to a target temperature difference range in which the first temperature difference is located, and is used for identifying that the target temperature difference range is the first temperature difference range, controlling the throttling element to close from the current opening degree according to a preset time interval and in a third step; recognizing that the target temperature difference range is a second temperature difference range, and controlling the throttling element to close from the current opening according to a preset time interval by a fourth step length; and recognizing that the target temperature difference range is a third temperature difference range, acquiring the set temperature and the ambient temperature of the air conditioner, and adjusting the opening degree of the throttling element according to the set temperature and the ambient temperature.
According to an embodiment of the invention, the control module adjusts the opening degree of the throttling element according to the set temperature and the environment temperature, and is used for acquiring a second temperature difference between the set temperature and the environment temperature at the previous moment and a third temperature difference between the set temperature and the environment temperature at the current moment; acquiring a difference value between the second temperature difference and the third temperature difference; recognizing that the difference is smaller than or equal to a set value, and controlling the throttling element to close from the current opening degree according to a preset time interval in a fifth step length; and recognizing that the difference is larger than a set value, and controlling the throttling element to be opened at a sixth step length from the current opening according to a preset time interval.
According to an embodiment of the invention, the control module is further configured to continuously obtain an ambient temperature, and continuously adjust the opening degree of the throttling element according to a temperature difference between the set temperature and the ambient temperature.
According to an embodiment of the invention, the control module is further configured to continue to obtain the first temperature and the reference temperature, and to continuously adjust the opening degree of the throttling element according to the first temperature and the reference temperature.
To achieve the above object, an embodiment of a third aspect of the present invention provides an air conditioner, including: the control device of the air conditioner is provided.
According to the air conditioner provided by the embodiment of the invention, through the control device of the air conditioner, the cooling and heating effects of the air conditioner can be ensured, meanwhile, the refrigerant noise generated when the opening degree of the throttling element on the auxiliary path is larger is reduced, the noise of the whole air conditioner is reduced, and the comfort level of a user is improved.
In order to achieve the above object, a fourth aspect of the present invention provides an electronic device, which includes a memory, a processor; the processor reads the executable program codes stored in the memory to run programs corresponding to the executable program codes, so as to realize the control method of the air conditioner.
According to the electronic equipment provided by the embodiment of the invention, by executing the control method of the air conditioner, the cooling and heating effects of the air conditioner can be ensured, and meanwhile, the refrigerant noise generated when the opening degree of the throttling element on the auxiliary path is larger is reduced, the noise of the whole machine is reduced, and the comfort degree of a user is improved.
To achieve the above object, a fifth embodiment of 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 control method of the air conditioner.
According to the computer readable storage medium of the embodiment of the invention, by executing the control method of the air conditioner, the cooling and heating effects of the air conditioner can be ensured, and meanwhile, the refrigerant noise generated when the opening degree of the throttling element on the auxiliary path is larger is reduced, the noise of the whole machine is reduced, and the comfort degree of a user is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a system diagram of an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 4 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 5 is a flowchart of a control method of an air conditioner according to still another embodiment of the present invention;
fig. 6 is a block schematic diagram of a control apparatus of an air conditioner according to an embodiment of the present invention; and
fig. 7 is a block schematic diagram of an air conditioner according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A control method of an air conditioner, a control device of an air conditioner, and an air conditioner having the control device according to embodiments of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a system diagram of an indoor unit of an air conditioner according to an embodiment of the present invention.
As shown in fig. 1, an indoor unit of an air conditioner may include: main heat exchanger, supplementary heat exchanger and refrigeration part, wherein, the main road includes: main heat exchanger 1, main liquid pipe 3, main electronic expansion valve 2 and trachea 4, the auxiliary circuit includes: the auxiliary heat exchanger 6, the auxiliary liquid pipe 10, the auxiliary pressure sensor 7, the auxiliary electronic expansion valve 9 and the air supplement pipe 5, and the temperature sensor 8 is arranged on the auxiliary liquid pipe 10.
The air conditioner has normal refrigerating and heating modes and also has a constant temperature dehumidification function. The constant temperature dehumidification function is that the main heat exchanger system of the same inner machine system is used for refrigerating and dehumidifying, the auxiliary heat exchanger is used for heating, the outlet air temperature reaches a constant value by adjusting the refrigerant flow of the main path and the auxiliary path, and the temperature is not reduced while dehumidification is met.
However, in the constant temperature dehumidification process, when the set dehumidification temperature is high, the flow rate of the gaseous refrigerant of the auxiliary heat exchanger needs to be increased to generate more heat to neutralize the cold air of the main heat exchanger, so as to generate hot air with higher temperature, however, the situation that the heat exchange of the heat exchanger is insufficient can occur along with the increase of the flow rate of the refrigerant of the auxiliary heat exchanger, and the phenomenon is more obvious when the heat exchanger is operated at a low wind level. Therefore, a part of gas refrigerant of the auxiliary heat exchanger enters the main flow path to generate gas-liquid two-phase refrigerant, and the gas-liquid two-phase refrigerant of the main flow path generates refrigerant noise of water flow when being throttled by the main path electronic expansion valve, thereby seriously influencing the comfort of users.
Therefore, the invention provides a control method of an air conditioner, which adjusts the opening degree of an auxiliary electronic expansion valve (a throttling element on an auxiliary road) according to a first temperature and a reference temperature on the auxiliary road in the air conditioner, reduces the noise of a refrigerant generated when the opening degree of the throttling element on the auxiliary road is larger while ensuring the refrigerating and heating effects of the air conditioner, reduces the noise of the whole machine, and improves the comfort level of users.
Fig. 2 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention.
As shown in fig. 2, the control method of the air conditioner according to the embodiment of the present invention may include the steps of:
and S1, identifying that the air conditioner needs to enter a dehumidification mode currently.
And S2, acquiring a first temperature and a reference temperature on an auxiliary road in the air conditioner. The first temperature T2A can be obtained by a temperature sensor arranged on the auxiliary liquid pipe, the reference temperature can be obtained by a large number of experimental tests when the simulated air conditioner is under the worst working condition, and the reference temperature can also be a saturation temperature corresponding to the pressure value calculated by the pressure value fed back by the auxiliary pressure sensor.
And S3, adjusting the opening degree of the throttling element on the auxiliary road according to the first temperature and the reference temperature.
Specifically, in the operation process of the air conditioner, whether the air conditioner needs to be controlled to perform a dehumidification mode can be judged according to the indoor environment humidity, when the air conditioner is judged to enter the dehumidification mode, a first temperature and a reference temperature on the auxiliary road are obtained, the opening degree of the throttling element on the auxiliary road is adjusted according to the first temperature and the reference temperature, for example, the opening degree of the throttling element on the auxiliary road is adjusted according to a temperature difference value between the first temperature and the reference temperature, and when the temperature difference value is larger than a certain value, the opening degree of the throttling element is subjected to amplification control; and when the temperature difference is smaller than a certain value, the opening degree of the throttling element is subjected to turn-down control.
The following explains a specific control logic of the air conditioner.
According to one embodiment of the present invention, adjusting the opening degree of the throttling element on the auxiliary road according to the first temperature and the reference temperature includes: the method includes the steps of identifying a target temperature range where a first temperature is located, and adjusting the opening degree of a throttling element according to the target temperature range, wherein the reference temperature includes a first reference temperature and a second reference temperature, the first reference temperature is smaller than the second reference temperature, the target temperature range is determined according to the first reference temperature and the second reference temperature, the first reference temperature and the second reference temperature are temperature parameters which can meet the requirement that an auxiliary path refrigerant is liquid when the air conditioner is simulated to operate under the worst working condition, and the temperature parameters are obtained through a large number of experimental tests, for example, the first reference temperature can be 26 ℃, and the second reference temperature can be 28 ℃.
It should be noted that the reference temperature can meet the requirement that the air conditioner can also ensure that the auxiliary cooling medium is in a liquid state when running under the worst condition, and thus can certainly meet the requirement that the auxiliary cooling medium is in a liquid state under the conventional working condition.
Further, according to an embodiment of the present invention, adjusting the opening degree of the throttling element according to the target temperature range includes: recognizing that the target temperature range is a first temperature range, and controlling the throttling element to close from the current opening degree according to a preset time interval by a first step length; recognizing that the target temperature range is a second temperature range, and controlling the throttling element to close from the current opening degree according to a preset time interval by a second step length; and recognizing that the target temperature range is a third temperature range, acquiring the set temperature and the ambient temperature of the air conditioner, and adjusting the opening of the throttling element according to the set temperature and the ambient temperature.
The first temperature range is greater than a second reference temperature, the second temperature range is greater than or equal to a first reference parameter and less than or equal to a second reference parameter, the third temperature range is less than the first reference parameter, and the preset time interval, the first step length and the second step length can be calibrated according to actual conditions, for example, the preset time interval can be 30s, the first step length can be 16P, and the second step length can be 8P; the set temperature TS is a temperature value set by a user through a wire controller, the environment temperature T1 is an indoor environment temperature, and can be acquired through a temperature sensor arranged on the air conditioner, and can also be acquired through other indoor household electrical appliances and transmitted through a communication network.
Specifically, when the air conditioner is judged to enter the dehumidification mode, the throttling element in the auxiliary circuit is controlled to maintain the minimum opening degree (for example, the minimum opening degree can be 120s), and then the T2A control logic is entered (namely, the subsequent control logic is determined according to the first temperature and the reference temperature). When the reference temperature is obtained through a large number of experimental tests when the simulated air conditioner is in the worst working condition, the temperature range of the simulated air conditioner is judged by the first temperature T2A and the reference temperature (the first reference temperature is 26 ℃ and the second reference temperature is 28 ℃) which are obtained in real time, and the opening degree of the auxiliary throttling element is adjusted according to the temperature range. For example, when T2A is greater than 28 ℃, the opening of the auxiliary throttling element is controlled to start to be closed, for example, every 30s, by 16P; when the temperature is more than or equal to 26 ℃ and less than or equal to T2A and less than or equal to 28 ℃, controlling the opening of the auxiliary throttling element to be reduced, for example, reducing the opening by 8P every 30 s; when T2A is less than 26 ℃, the control is carried out according to the normal TS-T1 control logic.
As one example, as shown in fig. 3, the control method of the air conditioner may include the steps of:
s201, the air conditioner operates in a dehumidification mode.
S202, acquiring a first temperature T2A on the auxiliary road in real time.
S203, judging whether T2A is larger than a second reference temperature (such as 28 ℃). If yes, go to step S204; if not, step S205 is performed.
And S204, controlling the opening degree of the throttling element on the auxiliary road to be closed in 16P/30S.
S205, determine whether T2A is greater than or equal to a first reference temperature (e.g., 26 ℃). If yes, go to step S206; if not, step S207 is performed.
And S206, controlling the opening degree of the throttling element on the auxiliary road to be closed in 8P/30S.
S207, the control logic of TS-T1 is entered.
It should be noted that, not only can the indoor ambient temperature be obtained, but also the return air temperature of the air conditioner can be obtained, when the air conditioner has no fresh air system, the return air temperature is basically the same as the indoor ambient temperature, but when the air conditioner has a fresh air system, the return air temperature and the indoor ambient temperature have a certain temperature difference, and at this moment, if subsequent control logic is performed according to the difference between the return air temperature and the set temperature, some control parameters need to be changed.
According to another embodiment of the present invention, the adjusting the opening degree of the throttling element on the auxiliary road according to the first temperature and the reference temperature further comprises: acquiring the current pressure of an auxiliary road in the air conditioner, and acquiring the corresponding saturation temperature according to the current pressure; and acquiring a first temperature difference between the saturation temperature and the first temperature, and adjusting the opening degree of the throttling element according to a target temperature difference range in which the first temperature difference is positioned. The pressure value can be obtained in real time according to the auxiliary road pressure sensor, and the corresponding saturation temperature can be obtained according to the pressure value.
Further, according to an embodiment of the present invention, the adjusting the opening degree of the throttling element according to the target temperature difference range in which the first temperature difference is located includes: recognizing that the target temperature difference range is a first temperature difference range, controlling the throttling element to close from the current opening degree according to a preset time interval in a third step; recognizing that the target temperature difference range is a second temperature difference range, and controlling the throttling element to close from the current opening degree according to a preset time interval by a fourth step length; and identifying the target temperature difference range as a third temperature difference range, acquiring the set temperature and the ambient temperature of the air conditioner, and adjusting the opening of the throttling element according to the set temperature and the ambient temperature.
The first temperature difference range, the second temperature difference range, the third temperature difference range, the preset time interval, the third step length and the fourth step length can be calibrated according to actual conditions, for example, the first temperature difference range may be less than or equal to 2 ℃, the second temperature difference range may be greater than 2 ℃ and less than 4 ℃, the third temperature difference range may be greater than or equal to 4 ℃, the preset time interval may be 30s, and the third step length is greater than the fourth step length.
Specifically, when the air conditioner is judged to enter the dehumidification mode, the throttling element in the auxiliary circuit is controlled to maintain the minimum opening degree (for example, the minimum opening degree can be 120s), and then the T2A control logic is entered (namely, the subsequent control logic is determined according to the first temperature and the reference temperature). When the reference temperature is the saturation temperature T corresponding to the pressure acquired by the auxiliary road pressure sensor, the temperature difference range of the first temperature T2A acquired in real time and the saturation temperature T acquired in real time is judged by the first temperature difference, so that the opening degree of the auxiliary road throttling element is adjusted according to the temperature difference range of the first temperature difference. For example, when T-T2A is less than or equal to 2 ℃, the opening of the auxiliary throttling element is controlled to be reduced, for example, every 30s, by the method of reducing delta P1; when the temperature is less than 2 ℃ and less than T-T2A and less than 4 ℃, controlling the opening of the auxiliary throttling element to be reduced, for example, reducing the opening by delta P2 every 30 s; when the temperature of T-T2A is more than or equal to 4 ℃, the control is carried out according to the normal TS-T1 control logic.
As one example, as shown in fig. 4, the control method of the air conditioner may include the steps of:
s301, the air conditioner operates in a dehumidification mode.
S302, the throttle element on the side road is kept at the minimum opening degree (e.g., 120S).
And S303, acquiring the first temperature T2A on the auxiliary road and the saturation temperature T corresponding to the pressure sensor on the auxiliary road in real time.
S304, judging whether T-T2A is less than or equal to 2 ℃. If yes, go to step S305; if not, step S306 is performed.
And S305, controlling the opening degree of the throttling element on the auxiliary road to be reduced by delta P1/30S.
S306, judging whether the T-T2A is less than 4 ℃. If yes, go to step S307; if not, step S308 is performed.
And S307, controlling the opening degree of the throttling element on the auxiliary road to be closed by delta P2/30S.
S308, the control logic of TS-T1 is entered.
In an embodiment of the present invention, after the adjusting the opening degree of the throttling element, the method further includes: and continuously acquiring the first temperature and the reference temperature, and continuously adjusting the opening degree of the throttling element according to the first temperature and the reference temperature.
It should be noted that, in the above two embodiments, after the opening degree of the throttling element is adjusted according to the first temperature and the reference temperature, the first temperature and the reference temperature are also continuously obtained to control the throttling element, that is, the whole control logic is executed in a loop, that is, the first temperature and the reference temperature are obtained in real time, and the control is performed in real time.
According to an embodiment of the present invention, adjusting the opening degree of the throttling element according to the set temperature and the ambient temperature includes: acquiring a second temperature difference between the set temperature at the previous moment and the ambient temperature and a third temperature difference between the set temperature at the current moment and the ambient temperature; acquiring a difference value between the second temperature difference and the third temperature difference; the identification difference is smaller than or equal to a set value, and the throttling element is controlled to be closed from the current opening degree according to a preset time interval in a fifth step length; and controlling the throttling element to be opened from the current opening according to a preset time interval and a sixth step length when the identification difference value is larger than the set value. The set value, the preset time interval, the fifth step length and the sixth step length may be calibrated according to actual conditions, for example, the set value may be 0 ℃, the preset time interval may be 30s, and the fifth step length and the sixth step length may be equal.
Further, according to an embodiment of the present invention, after the adjusting the opening degree of the throttling element, the method further includes: and continuously acquiring the ambient temperature, and continuously adjusting the opening of the throttling element according to the temperature difference between the set temperature and the ambient temperature.
Specifically, with the current time as a reference, a temperature difference between the set temperature and the ambient temperature at a time before the current time is obtained and recorded as a second temperature difference Δ T1, and a temperature difference between the set temperature and the ambient temperature at the current time is obtained and recorded as a third temperature difference Δ T2, where a time interval between the current time and the previous time may be 10s (i.e., an acquisition period is 10s), and differences Δ T1 to Δ T2 between the second temperature difference and the third temperature difference are calculated and determined. When the temperature is less than or equal to 0 ℃ from the delta T1 to the delta T2, the throttling element in the auxiliary road is controlled to be closed and adjusted from the current opening, the closing rate is 30s, and the closing is carried out once every time by delta P3 steps. When T1-delta T2 is higher than 0 ℃, the throttle element in the auxiliary circuit is controlled to be opened to be adjusted from the current opening degree once at the speed of 30s, and the opening is carried out at delta P3 steps each time. And controlling the opening of the throttling element in the auxiliary road according to the difference between the current set temperature and the ambient temperature every sampling period of 10s until the controller exits the dehumidification mode, enters the conventional control mode, and adjusts the opening of the throttling element in the conventional control mode.
As one example, as shown in fig. 5, the control method of the air conditioner may include the steps of:
s401, TS-T1 control logic.
S402, a third temperature difference Δ T2 between the set temperature at the present time and the ambient temperature is obtained.
S403, a second temperature difference Δ T1 between the set temperature and the ambient temperature at the time immediately before the current time is obtained.
S404, calculating a difference value delta T1-delta T2 between the second temperature difference and the third temperature difference.
S405, judging whether the temperature is more than or equal to 0 ℃ from delta T1 to delta T2. If yes, go to step S406; if not, step S407 is performed.
S406, the opening degree of the throttling element in the auxiliary road is controlled to be reduced by delta P3/30S.
S407, the opening degree of the throttle element on the auxiliary road is controlled to be increased by delta P3/30S.
When the step length for adjusting the opening degree of the throttling element is determined, the step length needs to be determined according to the flow range of the throttling element on the auxiliary road, the flow range of the throttling element is set according to the internal machines with different capacities, the corresponding capacities and the corresponding ranges are shown in table 1 (the upper limit values of the flow corresponding to the internal machines with different capacities), the adjusting step number Δ P of the throttling element in the auxiliary road meets the condition that Δ P1 is more than Δ P2 is more than Δ P3, and the flow corresponding to Δ P1, Δ P2 and Δ P3 is required to be in the flow range interval of the electronic expansion valve of the model with the corresponding capacity.
TABLE 1
| Model (Capacity) | Capacity is less than or equal to 3.6kw | The capacity is more than 3.6kw and less than or equal to 5.6kw | 5.6kw < capacity < 7.1kw |
| Flow rate (Q) L/ |
2≤Q≤20L/ |
2≤Q≤33L/ |
2≤Q≤35L/min |
In summary, the present invention controls the opening degree of the throttling element in the auxiliary circuit to maintain the minimum opening degree when the air conditioner enters the dehumidification mode, and then enters the control logic determined by T2A in the auxiliary circuit (i.e. the opening degree of the throttling element is adjusted according to the relationship between the first temperature and the reference temperature in the auxiliary circuit). And when the saturation temperature corresponding to the current pressure at T2A is greater than or equal to 4 ℃, directly entering the TS-T1 control logic mode. Therefore, the opening degree of the throttling element in the auxiliary circuit is adjusted according to the judgment of the saturation temperature (or a specific numerical value obtained by experimental tests) corresponding to the pressure in the auxiliary circuit and the temperature difference value of the auxiliary circuit T2A and the judgment of the TS-T1, so that the flow of the auxiliary heat exchanger is controlled, the refrigerant flowing to the main circuit from the auxiliary heat exchanger is ensured to be in a pure liquid state, and the aim of reducing the flowing noise of the refrigerant is fulfilled.
In summary, according to the control method of the air conditioner in the embodiment of the present invention, when it is identified that the air conditioner needs to enter the dehumidification mode currently, the first temperature and the reference temperature on the auxiliary road in the air conditioner are obtained, and the opening degree of the throttling element on the auxiliary road is adjusted according to the first temperature and the reference temperature. Therefore, the method can ensure the refrigerating and heating effects of the air conditioner, reduce the refrigerant noise generated when the opening of the throttling element on the auxiliary path is larger, reduce the noise of the whole machine and improve the comfort level of users.
Fig. 6 is a block diagram of a control apparatus of an air conditioner according to an embodiment of the present invention.
As shown in fig. 6, the control device of an air conditioner according to an embodiment of the present invention may include: an identification module 100, an acquisition module 200 and a control module 300.
The identification module 100 is used for identifying that the air conditioner needs to enter the dehumidification mode currently. The obtaining module 200 is configured to obtain a first temperature and a reference temperature of an auxiliary road in an air conditioner. The control module 300 is configured to adjust an opening of a throttling element on the secondary path based on the first temperature and a reference temperature.
According to an embodiment of the invention, the control module 300 adjusts the opening degree of the throttling element on the auxiliary road according to a first temperature and a reference temperature, and is used for identifying a target temperature range in which the first temperature is located, and adjusting the opening degree of the throttling element according to the target temperature range, wherein the reference temperature comprises a first reference temperature and a second reference temperature, the first reference temperature is smaller than the second reference temperature, and the target temperature range is determined according to the first reference temperature and the second reference temperature.
According to one embodiment of the present invention, the control module 300 adjusts the opening degree of the throttling element according to the target temperature range, and is configured to identify the target temperature range as a first temperature range, and control the throttling element to close from the current opening degree according to a preset time interval by a first step length, wherein the first temperature range is greater than a second reference temperature; recognizing that the target temperature range is a second temperature range, and controlling the throttling element to close from the current opening degree according to a preset time interval by a second step length, wherein the second temperature range is greater than or equal to a first reference parameter and less than or equal to a second reference parameter; and recognizing that the target temperature range is a third temperature range, acquiring the set temperature and the return air temperature of the air conditioner, and adjusting the opening of the throttling element according to the set temperature and the ambient temperature, wherein the third temperature range is smaller than the first reference parameter.
According to an embodiment of the present invention, the control module 300 adjusts the opening degree of the throttling element on the auxiliary road according to the first temperature and the reference temperature, and is further configured to obtain a current pressure of the auxiliary road in the air conditioner, and obtain a corresponding saturation temperature according to the current pressure; and acquiring a first temperature difference between the saturation temperature and the first temperature, and adjusting the opening degree of the throttling element according to a target temperature difference range in which the first temperature difference is positioned.
According to an embodiment of the present invention, the control module 300 adjusts the opening degree of the throttling element according to a target temperature difference range in which the first temperature difference is located, so as to identify that the target temperature difference range is the first temperature difference range, and control the throttling element to close from the current opening degree according to a preset time interval by a third step; recognizing that the target temperature difference range is a second temperature difference range, and controlling the throttling element to close from the current opening degree according to a preset time interval by a fourth step length; and identifying the target temperature difference range as a third temperature difference range, acquiring the set temperature and the ambient temperature of the air conditioner, and adjusting the opening of the throttling element according to the set temperature and the ambient temperature.
According to an embodiment of the present invention, the control module 300 adjusts the opening degree of the throttling element according to the set temperature and the ambient temperature, so as to obtain a second temperature difference between the set temperature at the previous moment and the ambient temperature and a third temperature difference between the set temperature at the current moment and the ambient temperature; acquiring a difference value between the second temperature difference and the third temperature difference; the identification difference is smaller than or equal to a set value, and the throttling element is controlled to be closed from the current opening degree according to a preset time interval in a fifth step length; and controlling the throttling element to be opened from the current opening according to a preset time interval and a sixth step length when the identification difference value is larger than the set value.
According to an embodiment of the invention, the control module 300 is further configured to continuously obtain the ambient temperature and continuously adjust the opening of the throttling element according to the temperature difference between the set temperature and the ambient temperature.
According to an embodiment of the invention, the control module 300 is further configured to continue to obtain the first temperature and the reference temperature, and continuously adjust the opening degree of the throttling element according to the first temperature and the reference temperature.
It should be noted that, for details not disclosed in the control device of the air conditioner in the embodiment of the present invention, please refer to details disclosed in the control method of the air conditioner in the embodiment of the present invention, which are not repeated herein.
According to the control device of the air conditioner, when the recognition module recognizes that the air conditioner needs to enter the dehumidification mode at present, the acquisition module acquires the first temperature and the reference temperature of the auxiliary road in the air conditioner, and the control module adjusts the opening degree of the throttling element on the auxiliary road according to the first temperature and the reference temperature. Therefore, the device can reduce the refrigerant noise generated when the opening of the throttling element on the auxiliary road is larger while ensuring the refrigerating and heating effects of the air conditioner, reduce the noise of the whole machine and improve the comfort level of users.
Fig. 7 is a block schematic diagram of an air conditioner according to an embodiment of the present invention.
As shown in fig. 7, an air conditioner 1000 according to an embodiment of the present invention may include: the control device 1100 of the air conditioner is described above.
According to the air conditioner provided by the embodiment of the invention, through the control device of the air conditioner, the cooling and heating effects of the air conditioner can be ensured, meanwhile, the refrigerant noise generated when the opening degree of the throttling element on the auxiliary path is larger is reduced, the noise of the whole air conditioner is reduced, and the comfort level of a user is improved.
Corresponding to the above embodiment, the present invention further provides an electronic device, which includes a memory and a processor; the processor reads the executable program codes stored in the memory to run programs corresponding to the executable program codes, so as to realize the control method of the air conditioner.
According to the electronic equipment provided by the embodiment of the invention, by executing the control method of the air conditioner, the cooling and heating effects of the air conditioner can be ensured, and meanwhile, the refrigerant noise generated when the opening degree of the throttling element on the auxiliary path is larger is reduced, the noise of the whole machine is reduced, and the comfort degree of a user is improved.
In correspondence to the above embodiments, the present invention also provides a computer-readable storage medium having a computer program stored thereon, where the computer program, when executed by a processor, implements the control method of the air conditioner described above.
According to the computer readable storage medium of the embodiment of the invention, by executing the control method of the air conditioner, the cooling and heating effects of the air conditioner can be ensured, and meanwhile, the refrigerant noise generated when the opening degree of the throttling element on the auxiliary path is larger is reduced, the noise of the whole machine is reduced, and the comfort degree of a user is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A control method of an air conditioner is characterized by comprising the following steps:
recognizing that the air conditioner needs to enter a dehumidification mode currently;
acquiring a first temperature and a reference temperature on a side road in the air conditioner;
adjusting the opening degree of a throttling element on the auxiliary road according to the first temperature;
the adjusting the opening degree of the throttling element on the auxiliary road according to the first temperature and the reference temperature comprises:
identifying a target temperature range in which the first temperature is located, and adjusting the opening degree of the throttling element according to the target temperature range, wherein the reference temperature comprises a first reference temperature and a second reference temperature, the first reference temperature is smaller than the second reference temperature, and the target temperature range is determined according to the first reference temperature and the second reference temperature;
the adjusting the opening degree of the throttling element according to the target temperature range includes:
recognizing that the target temperature range is a first temperature range, and controlling the throttling element to close at a first step length from the current opening degree according to a preset time interval, wherein the first temperature range is greater than the second reference temperature;
recognizing that the target temperature range is a second temperature range, controlling the throttling element to close at a second step length from the current opening degree according to a preset time interval, wherein the second temperature range is greater than or equal to the first reference parameter and less than or equal to the second reference parameter;
and recognizing that the target temperature range is a third temperature range, acquiring the set temperature and the ambient temperature of the air conditioner, and adjusting the opening of the throttling element according to the set temperature and the ambient temperature, wherein the third temperature range is smaller than the first reference parameter.
2. The method of claim 1, wherein said adjusting an opening of a throttling element on the auxiliary road based on the first temperature and a reference temperature further comprises:
acquiring the current pressure of an auxiliary road in the air conditioner, and acquiring the corresponding saturation temperature according to the current pressure;
and acquiring a first temperature difference between the saturation temperature and the first temperature, and adjusting the opening of the throttling element according to a target temperature difference range in which the first temperature difference is positioned.
3. The method of claim 2, wherein adjusting the opening of the throttling element based on the target temperature differential range at which the first temperature differential is located comprises:
recognizing that the target temperature difference range is a first temperature difference range, controlling the throttling element to close from the current opening degree according to a preset time interval in a third step;
recognizing that the target temperature difference range is a second temperature difference range, and controlling the throttling element to close from the current opening according to a preset time interval by a fourth step length;
and recognizing that the target temperature difference range is a third temperature difference range, acquiring the set temperature and the ambient temperature of the air conditioner, and adjusting the opening degree of the throttling element according to the set temperature and the ambient temperature.
4. A method according to claim 1 or 3, wherein said adjusting the opening of the restriction element in dependence on the set temperature and the ambient temperature comprises:
acquiring a second temperature difference between the set temperature and the environment temperature at the previous moment and a third temperature difference between the set temperature and the environment temperature at the current moment;
acquiring a difference value between the second temperature difference and the third temperature difference;
recognizing that the difference is smaller than or equal to a set value, and controlling the throttling element to close from the current opening degree according to a preset time interval in a fifth step length;
and recognizing that the difference is larger than a set value, and controlling the throttling element to be opened at a sixth step length from the current opening according to a preset time interval.
5. The method of claim 4, wherein after adjusting the opening of the throttling element, further comprising:
and continuously acquiring the ambient temperature, and continuously adjusting the opening of the throttling element according to the temperature difference between the set temperature and the ambient temperature.
6. The method of any of claims 1-3, wherein after adjusting the opening of the throttling element, further comprising:
and continuously acquiring the first temperature and the reference temperature, and continuously adjusting the opening of the throttling element according to the first temperature and the reference temperature.
7. A control apparatus of an air conditioner, comprising:
the identification module is used for identifying that the air conditioner needs to enter a dehumidification mode currently;
the acquisition module is used for acquiring a first temperature and a reference temperature on a secondary road in the air conditioner;
the control module is used for adjusting the opening of a throttling element on the auxiliary road according to the first temperature and the reference temperature;
the adjusting the opening degree of the throttling element on the auxiliary road according to the first temperature and the reference temperature comprises:
identifying a target temperature range in which the first temperature is located, and adjusting the opening degree of the throttling element according to the target temperature range, wherein the reference temperature comprises a first reference temperature and a second reference temperature, the first reference temperature is smaller than the second reference temperature, and the target temperature range is determined according to the first reference temperature and the second reference temperature;
the adjusting the opening degree of the throttling element according to the target temperature range includes:
recognizing that the target temperature range is a first temperature range, and controlling the throttling element to close at a first step length from the current opening degree according to a preset time interval, wherein the first temperature range is greater than the second reference temperature;
recognizing that the target temperature range is a second temperature range, controlling the throttling element to close at a second step length from the current opening degree according to a preset time interval, wherein the second temperature range is greater than or equal to the first reference parameter and less than or equal to the second reference parameter;
and recognizing that the target temperature range is a third temperature range, acquiring the set temperature and the ambient temperature of the air conditioner, and adjusting the opening of the throttling element according to the set temperature and the ambient temperature, wherein the third temperature range is smaller than the first reference parameter.
8. An air conditioner, comprising: the control device of an air conditioner according to claim 7.
9. An electronic device, comprising:
a memory, a processor; wherein the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, for implementing the control method of the air conditioner as set forth in any one of claims 1 to 6.
10. A computer-readable storage medium having stored thereon a computer program, characterized in that the program, when executed by a processor, implements the control method of an air conditioner according to any one of claims 1 to 6.
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| CN1119261A (en) * | 1994-06-02 | 1996-03-27 | Lg电子株式会社 | Dewaterring apparatus and method of air conditioner |
| CN2708148Y (en) * | 2004-03-12 | 2005-07-06 | 熊晓强 | Air conditioner |
| JP4730738B2 (en) * | 2005-12-26 | 2011-07-20 | 日立アプライアンス株式会社 | Air conditioner |
| CN1793747A (en) * | 2005-12-31 | 2006-06-28 | 东莞市广大制冷有限公司 | Controlling method for temperature regulating dehumidifier |
| KR102139084B1 (en) * | 2013-08-06 | 2020-07-29 | 엘지전자 주식회사 | Air conditioner |
| CN105352042B (en) * | 2015-11-27 | 2019-03-12 | 深圳创维空调科技有限公司 | Air conditioner indoor unit and air conditioner |
| JP6611826B2 (en) * | 2016-01-27 | 2019-11-27 | 三菱電機株式会社 | Dehumidifier |
| US10234149B2 (en) * | 2016-06-29 | 2019-03-19 | Lennox Industries Inc. | HVAC systems having improved four-way valve reheat control |
| CN108775725B (en) * | 2018-05-21 | 2020-12-15 | 广东美的暖通设备有限公司 | Indoor unit of three-pipe multi-split air conditioner and three-pipe multi-split air conditioner |
| CN109631427A (en) * | 2018-11-27 | 2019-04-16 | 珠海格力电器股份有限公司 | Dehumidification control method and unit |
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