CN112969893A - Control system for air conditioner - Google Patents
Control system for air conditioner Download PDFInfo
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- CN112969893A CN112969893A CN201880095788.5A CN201880095788A CN112969893A CN 112969893 A CN112969893 A CN 112969893A CN 201880095788 A CN201880095788 A CN 201880095788A CN 112969893 A CN112969893 A CN 112969893A
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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
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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
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Abstract
The control system of the air-conditioning apparatus is a control system of the air-conditioning apparatus that performs air-conditioning so that the room temperature of the air-conditioned space becomes a target temperature. A control system for an air conditioning device is provided with: an activity sensor that measures the activity of an indoor person in the air-conditioned space; and a control device that performs a fluctuation mode operation in which the target temperature is varied. The control device changes one or both of a fluctuation width, which is a fluctuation width of the target temperature, and a fluctuation period, which is a fluctuation period of the target temperature, in the fluctuation pattern, based on the activity amount measured by the activity amount sensor.
Description
Technical Field
The present invention relates to a control system for an air conditioner that performs indoor air conditioning.
Background
Conventionally, there have been cases of studies in which work efficiency is affected by indoor environments in offices, schools, and study accomplishment shifts. Therefore, there are techniques as follows: a stimulus-imparting substance is supplied into a room, and the supply and removal of the stimulus-imparting substance are switched to change the indoor thermal environment, thereby improving the activity of the autonomic nervous system (see, for example, patent document 1).
Documents of the prior art
Patent document
Disclosure of Invention
Problems to be solved by the invention
In patent document 1, a thermal stimulus is given to indoor people by supplying a stimulus-imparting substance for the purpose of improving the activity of the autonomic nervous system. Thus, the warm stimulation can improve the activity of the autonomic nervous system and also can bring comfort to indoor personnel. However, patent document 1 does not consider that the thermal stimulation provides comfort to the indoor people. Further, whether or not the indoor person feels comfortable is also considered to be influenced by the amount of activity of the indoor person. However, this point is not considered in patent document 1.
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a control system for an air conditioning apparatus, which can improve comfort by thermal stimulation while taking into consideration the amount of activity of indoor people.
Means for solving the problems
A control system for an air conditioning apparatus according to the present invention is a control system for an air conditioning apparatus that performs air conditioning so that a room temperature of an air-conditioned space becomes a target temperature, the control system including: an activity sensor that measures the activity of an indoor person in the air-conditioned space; and a control device that performs an operation in a fluctuation mode in which the target temperature is fluctuated, wherein the control device changes one or both of a fluctuation range, which is a fluctuation range of the target temperature, and a fluctuation period, which is a fluctuation period of the target temperature, in the fluctuation mode, on the basis of the activity amount measured by the activity amount sensor.
Effects of the invention
According to the present invention, since one or both of the fluctuation width and the fluctuation cycle of the target temperature are changed in accordance with the activity amount of the indoor person, a thermal stimulus can be given in accordance with the activity amount of the indoor person, and improvement of comfort can be facilitated.
Drawings
Fig. 1 is a diagram showing an example of an air conditioning system according to embodiment 1 of the present invention.
Fig. 2 is a block diagram showing an example of the control device of fig. 1.
Fig. 3 is a table showing a table in which the fluctuation width and the fluctuation cycle of the target temperature corresponding to the activity amount in the fluctuation mode of the air conditioning system according to embodiment 1 of the present invention are summarized.
Fig. 4 is a diagram showing an example of a control flowchart of the hunting pattern in the air conditioning system according to embodiment 1 of the present invention.
Fig. 5 is a diagram showing an example of fluctuations in the target temperature corresponding to the activity amount in the fluctuation mode in the air conditioning system according to embodiment 1 of the present invention.
Fig. 6 is an explanatory diagram of a modification 1 of the waving pattern in the air conditioning system according to embodiment 1 of the present invention.
Fig. 7 is an explanatory diagram of a modification 2 of the waving pattern in the air conditioning system according to embodiment 1 of the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The various specific setting examples described in the present embodiment are only examples, and are not particularly limited thereto.
In the present embodiment, the communication may be wireless communication or wired communication, or may be a combination of wireless communication and wired communication. For example, wireless communication may be performed in a certain section, and wired communication may be performed in another space. Further, communication from a certain device to another device may be performed by wired communication, and communication from another device to a certain device may be performed by wireless communication.
(Structure of embodiment 1)
Fig. 1 is a diagram showing an example of an air conditioning system according to embodiment 1 of the present invention.
The air conditioning system is provided with: an air conditioning apparatus 10 that performs air conditioning such that the room temperature of an air-conditioned space becomes a target temperature; and a control system 50, the control system 50 controlling the air conditioning device 10.
The air-conditioning apparatus 10 includes indoor units 20 and outdoor units 30. The indoor unit 20 includes an indoor fan 21, an indoor heat exchanger 22, and a room temperature sensor 23 that measures room temperature. The indoor unit 20 air-conditions the room in an operation mode such as cooling, heating, dehumidifying, humidifying, moisturizing, or blowing.
The outdoor unit 30 includes an outdoor fan 31, an outdoor heat exchanger 32, an expansion valve 33, a four-way valve 34, and a compressor 35. The compressor 35, the four-way valve 34, the outdoor heat exchanger 32, the expansion valve 33, and the indoor heat exchanger 22 are connected by refrigerant pipes 40, thereby constituting a refrigerant circuit. The refrigerant circulates through the refrigerant circuit while repeating compression and expansion, thereby forming a heat pump.
The control system 50 includes an activity sensor 60 for measuring the activity of an indoor person in the air-conditioned space, and a control device 70 for controlling the entire air-conditioning system.
The activity sensor 60 is configured by, for example, an infrared sensor, a wearable sensor, or the like. When the activity sensor 60 is an infrared sensor, the state of the person standing, sitting, or moving in the room is obtained from the heat distribution in the room, and the activity amount is calculated. In the case where the activity amount sensor 60 is a wearable sensor, for example, a wristwatch-type sensor worn on the wrist, a sensor having a function as an activity meter, such as an accelerometer, incorporated therein, may be used. The activity amount measured by the activity amount sensor 60 is transmitted to the control device 70 by communication.
The activity is specifically metabolic amount [ met ]]. Metabolic amount of 1[ met ]]Represents each 1[ m ]2]Body surface 58.2[ W ]]The amount of heat of (a). The heat quantity [ W]Is the average body surface of Japanese 1.7 m2]The case (1). The metabolic rate varies greatly by more than 10-fold from rest to exercise. For example, 1.0[ met ] at rest]. 1.2[ met ] when standing]. 2.0[ met ] in the case of slow walking]. When walking slightly rapidly, it is 3.0[ met ]]. The Marathon speed per hour is 10[ met ] 10 km]The left and right (the air conditioning and sanitation society, "the mechanism of comfortable warm environment").
The controller 70 performs the operation in each operation mode. In the heating operation and the cooling operation, a normal mode for maintaining the room temperature at a target temperature and a hunting mode for giving a thermal stimulus to indoor people are selectively performed. The fluctuation mode is control for varying the target temperature based on the activity amount measured by the activity amount sensor 60, and is control for the purpose of improving the comfort of indoor people by thermal stimulation. The fluctuation mode will be described again in detail.
The control device 70 is constituted by, for example, a microcomputer, and includes a CPU, a RAM, a ROM, and the like, and the ROM stores a program and the like corresponding to a flowchart described later. In fig. 1, the control device 70 is shown as a separate component from the air-conditioning apparatus 10, but may be incorporated in the air-conditioning apparatus 10.
Fig. 2 is a block diagram showing an example of the control device of fig. 1.
As shown in fig. 2, the control device 70 includes: a frequency determination unit 71, an operation control unit 72, and a storage unit 73. The frequency determination unit 71 determines the frequency of the compressor 35 based on the temperature difference between the room temperature measured and calculated by the room temperature sensor 23 and the target room temperature. The operation control unit 72 controls the compressor 35 based on the compressor frequency determined by the frequency determination unit 71. The storage unit 73 stores a control program of the air conditioning system, various data necessary for the waving mode, and the like. The connection between the units may be wired or wireless, as long as control commands and device information are transmitted to each other. In fig. 2, only the portions related to embodiment 1 are shown.
(relationship between thermal stimulation and comfort)
As a result of the studies so far, it is known that the concept of controlling the operation of an air conditioner at the rhythm of a living body, for example, the operation control of 1/f fluctuation may bring a sense of comfort to the living body. In embodiment 1, the fluctuation pattern is used for room temperature adjustment, thereby improving the comfort of the indoor person. The fluctuation pattern of embodiment 1 is a fluctuation pattern different from the 1/f fluctuation, and will be described below.
(wave mode)
In the fluctuation mode, the fluctuation range and the fluctuation cycle of the target temperature of the air conditioning device 10 are automatically adjusted in accordance with the amount of activity of the indoor person measured by the activity amount sensor 60. The fluctuation range is the fluctuation range of the target temperature. The fluctuation period is a period of variation of the target temperature. The waving pattern will be described in further detail below with reference to fig. 3. The following describes the hunting pattern during the cooling operation.
Fig. 3 is a diagram showing a table in which the fluctuation width and the fluctuation cycle of the target temperature corresponding to the activity amount in the fluctuation mode of the air conditioning system according to embodiment 1 of the present invention are summarized.
In embodiment 1, the activity amount is divided into 4 ranges by the threshold values a to C. Specifically, in "quiet" the amount of activity is 0[ met ] or less activity <1[ met ]. In addition, the activity level in "light exercise" is 1[ met ] or less and the activity level is less than 3[ met ]. In addition, the amount of activity in "moderate exercise" is 3[ met ] or less than 5[ met ]. In the "violent exercise", the activity is not more than 5 met. This division method is an example, and is not limited to this division method.
The greater the activity amount, the higher the thermal sensitivity of the human body. Conversely, when the metabolic load is reduced during sleep, the thermal sensitivity of the human body is also reduced accordingly. Therefore, in the waving pattern, as shown in fig. 3, as the activity amount becomes larger, the waving width is made larger such that H1 < H2 < H3, and on the other hand, the waving period is made shorter such that Δ T1 > Δ T2 > Δ T3. The specific numerical values of the fluctuation width and the fluctuation period shown in fig. 3 are only examples, and they may be set as appropriate according to actual use conditions and the like.
When the activity amount detected by the activity amount sensor 60 is in the "quiet" range, the room temperature is controlled so as to maintain the initial value described below without changing the target temperature. When the activity amount detected by the activity amount sensor 60 is in the range of "moderate exercise", for example, the description will be given of the specific example of fig. 3, where the fluctuation width is H2 and the fluctuation cycle is Δ T2. That is, here, for the cooling operation, control is performed such that the target temperature fluctuates between the initial value and a temperature lower than the initial value by H2 at intervals of Δ T2.
In addition, in the waving pattern of embodiment 1, control is also performed to reduce power consumption while maintaining comfort of the indoor people. Specifically, when the activity amount is in the range of "moderate exercise", for example, the target temperature is not fixed to a temperature lower than the initial value by H2, but alternately changes to the initial value and a temperature lower than the initial value by H2. This can reduce power consumption as compared with the case where the target temperature is fixed to a temperature lower than the initial value by H2.
Here, a method of determining the fluctuation width of the target temperature corresponding to the activity level will be described. The fluctuation width of the target temperature is determined using, for example, PMV (predictive Mean volume: thermal comfort index prediction average Vote value) as a thermal environment evaluation index indicating comfort. PMV is an index that 0 is a neutral value of comfort and can be evaluated with the + side as the warm side and the-side as the cold side. If the PMV is within a range of + -0.5, then it is a comfortable environment. The PMV is expressed by the following expression (1) using a plurality of parameters that affect the human thermal sensation.
PMV＝f(T、RH、v、MRT、MET、clo)……(1)
Wherein the content of the first and second substances,
t [. degree. C ]: at room temperature
RHA [% ]: relative humidity
v [ m/s ]: wind speed
MRT [. degree. C ]: mean radiant temperature
MET [ MET ]: metabolic capacity
clo [ clo ]: amount of clothes to be put on
Of the 6 variables, the values other than the room temperature T and the metabolic amount MET are fixed values. The relative humidity RH, the wind speed v, and the average radiation temperature MRT may be values prepared as defaults for cooling. Here, the average radiation temperature is a temperature obtained by averaging the heat radiation received from all directions around.
The room temperature T is calculated by substituting the metabolic amount MET of expression (1) for a metabolic amount indicating the activity amount at "rest", specifically, for example, for the center value of the activity amount range of "rest", and substituting 0, which is a neutral value of comfort, for the PMV. The room temperature T thus calculated is a temperature at which the person in the room feels comfortable when the person is in a "quiet" state. This temperature was used as an initial value.
Then, the central value of the activity amount range of each of "light exercise", "moderate exercise", and "intense exercise" is substituted into the metabolic amount MET of expression (1), and a comfortable room temperature corresponding to each activity amount is calculated. The calculated temperature difference between the room temperature and the initial value has a fluctuation width corresponding to the activity.
Fig. 4 is a diagram showing an example of a control flowchart of the hunting pattern in the air conditioning system according to embodiment 1 of the present invention. The control device 70 performs the processing of fig. 4 at predetermined control intervals, for example, every 1 minute until the end of the waving pattern is instructed.
When the waving mode is selected during the cooling operation, the control device 70 acquires the activity amount measured by the activity amount sensor 60 (step S1), and checks whether the activity amount is within any of 4 ranges separated in advance (step S2). Then, air conditioning control is performed in accordance with the corresponding range (step S3 to step S10).
That is, when the activity amount measured by the activity amount sensor 60 is in the range of 0[ met ] or more and less than A [ met ] (step S3), the control device 70 performs air conditioning control for keeping the target room temperature at a constant initial value (step S4). Specifically, the frequency determining unit 71 of the control device 70 determines the frequency of the compressor 35 based on the temperature difference between the room temperature measured by the room temperature sensor 23 and the initial value, and the operation control unit 72 controls the compressor 35 based on the determined frequency.
When the activity amount measured by the activity sensor 60 is in the range of A [ met ] or less and activity amount < B [ met ] (step S5), the controller 70 performs air conditioning control for varying the target room temperature between the initial value and a temperature H1 lower than the initial value at intervals of Δ T1 (step S6). When the activity amount measured by the activity sensor 60 is in the range of B [ met ] or more and less than C [ met ] (step S7), the controller 70 performs air conditioning control for varying the target room temperature between the initial value and a temperature H2 lower than the initial value at intervals of Δ T2 (step S8). When the activity amount measured by the activity amount sensor 60 is equal to or greater than C (step S9), the control device 70 performs air conditioning control in which the target room temperature is varied between the initial value and a temperature lower than the initial value by H3 at intervals of Δ T3 (step S10).
Fig. 5 is a diagram showing an example of fluctuations in the target temperature corresponding to the activity amount in the fluctuation mode in the air conditioning system according to embodiment 1 of the present invention. Hereinafter, the fluctuation pattern will be described using specific numerical values shown in fig. 3. Here, the initial value is set to 27 ℃.
In the example of fig. 5, at the initial start time t0 of the waving pattern, the activity level is in the "quiet" range, but as the time t1, the time t2, and the time t3 are advanced, the activity level increases toward "light exercise", "moderate exercise", and "strong exercise". Thus, as the activity increases, the fluctuation range of the target temperature is expanded to 1 ℃, 1.5 ℃ and 2 ℃, and the fluctuation cycle is shortened to 4 minutes, 3 minutes and 2 minutes. At time t4, the fluctuation range of the target room temperature is reduced from 2 ℃ to 1 ℃ as the activity level decreases from "vigorous exercise" to "light exercise", and the fluctuation cycle is increased from 2 minutes to 4 minutes. Then, at t5, the activity amount rises again from "moderate exercise" to "violent exercise", and accordingly, the fluctuation range of the target room temperature increases from 1 ℃ to 2 ℃, and the fluctuation cycle is shortened from 4 minutes to 2 minutes.
From time t1 to time t2, fluctuation control corresponding to "light weight exercise", that is, control for changing the target temperature between 26 ℃ obtained by subtracting 1 ℃ from 27 ℃ and 27 ℃ as an initial value every 4 minutes, is started at time t 1. During the period from time t1 to 4 minutes, the operation was performed so that the target temperature was 26 ℃. In the next 4 minutes, an operation was performed to set the target temperature to the initial value. However, in this example, since the fluctuation control corresponding to the activity amount is changed every 1 minute, the activity amount is changed from "light exercise" to "moderate exercise" at time t2 before 4 minutes elapses from the start of the operation for setting the target temperature to the initial value. With this change in the activity amount, the fluctuation control corresponding to "moderate exercise" was started before 4 minutes had elapsed.
As described above, according to embodiment 1, since the fluctuation width and the fluctuation cycle of the target room temperature are varied in accordance with the activity amount, an appropriate thermal stimulus can be given in accordance with the activity amount of the indoor person, and the comfort can be improved.
In embodiment 1, when the target room temperature is varied in accordance with the activity amount, the temperature is not constantly controlled to be lower than the initial value by the fluctuation width corresponding to the activity amount, but is alternately varied between the initial value and the temperature lower than the initial value by the fluctuation width. This can reduce power consumption as compared with a case where the target temperature is fixed to a temperature having a fluctuation range lower than the initial value.
In the waving pattern, the larger the activity amount, the larger the waving amplitude is made. In the waving pattern, the larger the activity amount, the shorter the waving period. In this way, the fluctuation width and the fluctuation cycle can be varied according to the activity amount.
In embodiment 1, the activity level is divided into a plurality of ranges, and the fluctuation width and the fluctuation period are set in each range, and the fluctuation pattern is performed in a plurality of ranges with the fluctuation width and the fluctuation period set in a range including the activity level measured and calculated by the activity level sensor 60. In this way, the activity amount is divided into a plurality of ranges, and a fluctuation pattern corresponding to each range can be realized.
The initial value in the waving pattern is determined such that the thermal environment evaluation index PMV calculated using a plurality of parameters including at least the amount of activity at rest becomes 0. The fluctuation width of each of the plurality of ranges for dividing the activity amount is a temperature difference between a temperature determined so that a thermal environment evaluation index PMV calculated using a plurality of parameters including at least the activity amount in each range becomes 0 and an initial value. In this way, since the initial value and the fluctuation width are set so that the thermal environment evaluation index PMV becomes 0, the air conditioning control at room temperature in which the thermal environment evaluation index PMV is comfortable is performed, and the comfort can be further improved.
In embodiment 1, both the fluctuation width and the fluctuation cycle of the target temperature are changed according to the activity amount, but either one may be changed. The following description will be specifically made.
Fig. 6 is an explanatory diagram of a modification 1 of the waving pattern in the air conditioning system according to embodiment 1 of the present invention.
In the modification of fig. 6, the fluctuation width of the target temperature is constant, and the fluctuation cycle is changed according to the activity amount.
Fig. 7 is an explanatory diagram of a modification 2 of the waving pattern in the air conditioning system according to embodiment 1 of the present invention.
In the modification of fig. 7, the fluctuation range of the target temperature is changed according to the activity amount, and the fluctuation cycle is made constant.
As described above, the comfort can be improved also as the control for varying one of the fluctuation width and the fluctuation period of the target temperature.
In embodiment 1, the initial value and the fluctuation width are determined using the thermal environment evaluation index PMV, but the present invention is not limited to this. The initial value may be, for example, a set temperature set by a user.
In embodiment 1, the example of the waving pattern in the cooling operation is described, but the waving pattern can be similarly applied to the heating operation. In the case of the heating operation, the fluctuation of the target room temperature may be changed to an initial value and a temperature having a high fluctuation width with respect to the initial value.
Description of the reference numerals
10 air conditioning equipment, 20 indoor units, 21 indoor blowers, 22 indoor heat exchangers, 23 room temperature sensors, 30 outdoor units, 31 outdoor blowers, 32 outdoor heat exchangers, 33 expansion valves, 34 four-way valves, 35 compressors, 40 refrigerant pipes, 50 control systems, 60 activity sensors, 70 control devices, 71 frequency determination units, 72 operation control units, and 73 storage units.
Claims (8)
1. A control system of an air conditioning device that performs air conditioning so that a room temperature of an air-conditioned space becomes a target temperature, wherein,
the control system of the air conditioning device includes:
an activity sensor that measures the activity of an indoor person in the air-conditioned space; and
a control device that performs an operation in a fluctuation mode in which the target temperature is varied,
the control device changes one or both of a fluctuation width, which is a fluctuation width of the target temperature, and a fluctuation period, which is a fluctuation period of the target temperature, in the fluctuation pattern, based on the activity amount measured by the activity amount sensor.
2. The control system of an air conditioning apparatus according to claim 1, wherein the control device increases the fluctuation width as the activity amount measured by the activity amount sensor increases.
3. The control system of an air conditioning apparatus according to claim 1 or 2, wherein the control device shortens the fluctuation cycle as the amount of activity measured by the activity amount sensor increases.
4. The control system of the air conditioning apparatus according to any one of claims 1 to 3, wherein the activity amount is divided into a plurality of ranges, the fluctuation width and the fluctuation period are set in each range,
the fluctuation mode is performed in the plurality of ranges with the fluctuation width and the fluctuation cycle set in a range including the activity amount measured by the activity amount sensor.
5. The control system of an air conditioning apparatus according to any one of claims 1 to 4, wherein the control apparatus alternately fluctuates the target temperature to an initial value of the target temperature and a temperature lower than the initial value by the fluctuation width in the fluctuation mode at the time of cooling operation in the fluctuation cycle.
6. The control system of an air conditioning apparatus according to any one of claims 1 to 4, wherein the control apparatus alternately fluctuates the target temperature by the fluctuation cycle to an initial value of the target temperature and a temperature higher than the initial value by the fluctuation width in the fluctuation mode at the time of heating operation.
7. The control system of an air conditioning apparatus according to claim 5 or 6, wherein the initial value is determined such that a thermal environment evaluation index PMV calculated using a plurality of parameters including at least an activity amount at rest becomes 0.
8. The control system of an air conditioning apparatus according to any one of claims 5 to 7, wherein the fluctuation width of each of the plurality of ranges is a temperature difference between a temperature determined so that a thermal environment evaluation index PMV calculated using a plurality of parameters including at least an activity amount in each range becomes 0 and the initial value.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| PCT/JP2018/042657 WO2020105088A1 (en) | 2018-11-19 | 2018-11-19 | Control system for air-conditioning apparatus |
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| CN112969893A true CN112969893A (en) | 2021-06-15 |
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| CN113819571A (en) * | 2021-10-22 | 2021-12-21 | 宁波奥克斯电气股份有限公司 | Control method and device of air conditioner and computer readable storage medium |
| CN113819583A (en) * | 2021-10-22 | 2021-12-21 | 宁波奥克斯电气股份有限公司 | Energy-saving control method and device for maintaining comfort of air conditioner and computer readable storage medium |
| CN117404827A (en) * | 2023-12-14 | 2024-01-16 | 珠海格力电器股份有限公司 | Heat pump system control method and device and heat pump system |
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| CN113819583A (en) * | 2021-10-22 | 2021-12-21 | 宁波奥克斯电气股份有限公司 | Energy-saving control method and device for maintaining comfort of air conditioner and computer readable storage medium |
| CN113819583B (en) * | 2021-10-22 | 2022-09-30 | 宁波奥克斯电气股份有限公司 | Energy-saving control method and device for maintaining comfort of air conditioner and computer readable storage medium |
| CN113819571B (en) * | 2021-10-22 | 2022-09-30 | 宁波奥克斯电气股份有限公司 | Control method and device of air conditioner and computer readable storage medium |
| CN117404827A (en) * | 2023-12-14 | 2024-01-16 | 珠海格力电器股份有限公司 | Heat pump system control method and device and heat pump system |
| CN117404827B (en) * | 2023-12-14 | 2024-05-17 | 珠海格力电器股份有限公司 | Heat pump system control method and device and heat pump system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2020105088A1 (en) | 2021-06-10 |
| JP6937946B2 (en) | 2021-09-22 |
| WO2020105088A1 (en) | 2020-05-28 |
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Application publication date: 20210615 |