CN115654711A - Control method and control device for optimizing thermal comfort in refrigeration mode and multi-split air conditioner - Google Patents
Control method and control device for optimizing thermal comfort in refrigeration mode and multi-split air conditioner Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 90
- 238000005057 refrigeration Methods 0.000 title abstract description 22
- 239000003507 refrigerant Substances 0.000 claims abstract description 100
- 238000001816 cooling Methods 0.000 claims abstract description 22
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- 238000004378 air conditioning Methods 0.000 description 1
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Abstract
The invention relates to the technical field of multi-split air conditioners, in particular to a control method and a control device for optimizing thermal comfort in a refrigeration mode and a multi-split air conditioner. The control method for optimizing the thermal comfort in the cooling mode comprises the following steps: acquiring a refrigerant distribution weight of each indoor unit; respectively judging whether the refrigerant distribution weight of each indoor unit is greater than the refrigerant distribution weight average value, wherein the refrigerant distribution weight average value is the average value of a plurality of refrigerant distribution weight values; and controlling the opening degree of the electronic expansion valve of the indoor unit which is judged to be yes to increase, and controlling the opening degree of the electronic expansion valve of the indoor unit which is judged to be no to decrease. The control method, the control device and the multi-split air conditioner for optimizing the thermal comfort in the refrigeration mode can enable the refrigerant flow of the indoor unit with a small selection type or installed at the far tail end to be close to the actual demand of the corresponding indoor unit for the refrigerant, are convenient to improve the refrigeration effect of the corresponding indoor unit, and improve the thermal comfort of the indoor environment in the refrigeration mode on the basis of not additionally adding parts.
Description
Technical Field
The invention relates to the technical field of multi-split air conditioners, in particular to a control method and a control device for optimizing thermal comfort in a refrigeration mode and a multi-split air conditioner.
Background
The multi-split air conditioner is air conditioning equipment with one or more external units driving multiple internal units to work, the multiple internal units adjust the refrigerant flow through respective electronic expansion valves, under the refrigeration mode, when the selected type of a certain internal unit is small (for example, the room area is large, the selected internal unit number is small) or the indoor unit is installed at a far end, the problem that the refrigerant flow of the internal unit is small compared with the actual demand easily occurs, particularly, when the indoor unit is in high-temperature weather (the outdoor temperature is more than or equal to 40 ℃), the refrigeration effect of the internal unit is poor, and the thermal comfort of the indoor environment is influenced.
Disclosure of Invention
The invention aims to provide a control method and a control device for optimizing the thermal comfort in a refrigeration mode and a multi-split air conditioner, so as to solve the technical problem that the thermal comfort of a part of a room in the refrigeration mode is poor in the multi-split air conditioner in the prior art.
The invention provides a control method for optimizing the thermal comfort in a cooling mode, which comprises the following steps:
acquiring a refrigerant distribution weight of each indoor unit;
respectively judging whether the refrigerant distribution weight of each indoor unit is greater than a refrigerant distribution weight average value, wherein the refrigerant distribution weight average value is an average value of a plurality of refrigerant distribution weight values;
and controlling the opening degree of the electronic expansion valve of the indoor unit which is judged to be yes to increase, and controlling the opening degree of the electronic expansion valve of the indoor unit which is judged to be not to decrease.
Compared with the prior art, the invention has the beneficial effects that:
the control method for optimizing the thermal comfort of the refrigeration mode can adjust the refrigerant distribution weight of each indoor unit according to the refrigerant demand degree of the indoor units in different rooms, wherein the indoor unit with a small selection type or installed at a far tail end generally has a larger refrigerant demand degree and a correspondingly larger refrigerant distribution weight compared with other indoor units, so that the opening degree of an electronic expansion valve of the corresponding indoor unit can be increased, the refrigerant quantity flowing to the indoor unit with a small selection type or installed at a far tail end is increased, the refrigerant flow of the indoor unit with a small selection type or installed at a far tail end is close to the actual demand of the corresponding indoor unit on the refrigerant, the refrigeration effect of the corresponding indoor unit is convenient to improve, and therefore, the thermal comfort of the indoor environment in the refrigeration mode is improved on the basis of not additionally adding parts. Of course, if the refrigerant flow rate of some indoor units is smaller than the actual demand due to other reasons, the corresponding refrigerant distribution weights are also larger, so as to increase the opening degree of the electronic expansion valves of the indoor units, so that the refrigerant flow rate can be as close to the actual demand as possible, and the thermal comfort of the indoor environment in the refrigeration mode is improved. After the thermal comfort of the indoor environment is improved, the set temperature and the set wind shield can be adjusted less in the process of using the air conditioner by a user.
As an implementation manner, the obtaining of the refrigerant distribution weight of each indoor unit includes:
acquiring a temperature drop weight, a preference weight and a process weight of each indoor unit; the temperature drop weight is negatively correlated with a temperature drop value after the preset time length of starting operation, the preference weight is negatively correlated with the set temperature and positively correlated with the set wind gear, the process weight comprises a process temperature weight and a process wind speed weight, the process temperature weight is positively correlated with an adjustment value of the set temperature and has an opposite changing direction, and the process wind speed weight is positively correlated with the adjustment value of the set wind gear and has the same changing direction;
and respectively calculating the weighted average value of the temperature drop weight value, the preference weight value and the process weight value of each indoor unit, and taking the weighted average value of each indoor unit as the refrigerant distribution weight value of the corresponding indoor unit.
The indoor unit has the beneficial effects that more real refrigerant demand degree of each indoor unit can be obtained, and therefore, better thermal comfort can be obtained.
As an alternative to the above-described embodiment,
ΔT i ＝TS i -T i ,i＝1，2…N。
wherein, Δ T i Is the temperature drop value, TS, of the indoor unit numbered i i The starting temperature, T, of the indoor unit numbered i i The current temperature of the indoor units with the serial number i is obtained, and N is the total number of the indoor units;
the number is i, A is the regulating coefficient, delta T MAX Is DeltaT i Of (c) is calculated.
The method has the advantages that the accuracy of the temperature drop weight value corresponding to each room can be improved, and the thermal comfort of each room is improved.
As an alternative to the above-described embodiment,
i＝1，2…N；
wherein, F i Setting a wind shield, TD, for the indoor unit numbered i i Setting the temperature of the indoor unit with the number i;
is the preference weight of the indoor unit with the serial number i, B is an adjusting coefficient, TT MAX Is TT i Is measured.
The method has the advantages that the accuracy of the preference weight value corresponding to each room can be improved, and the thermal comfort of each room is improved.
As an implementation manner, an absolute value of a difference between the refrigerant distribution weight and the refrigerant distribution weight average value is positively correlated with an opening variation of the electronic expansion valve.
The heat comfort in the room can be improved as soon as possible.
As an implementable embodiment, the method further comprises:
and controlling the rotation speed of the fan of the indoor unit to increase if the judgment is yes.
The heat-insulation and heat-insulation floor has the beneficial effects that the environment in a room can achieve high thermal comfort as soon as possible.
As an implementable embodiment, the method further comprises:
and when the suction superheat degree of the indoor unit is smaller than a preset threshold value, controlling the opening degree of the electronic expansion valve of the corresponding indoor unit to reduce the preset steps.
The beneficial effects are that, reduce the liquid risk of returning, can guarantee the reliability of air conditioner operation.
The present invention also provides a control device for optimizing thermal comfort in a cooling mode, comprising:
the acquisition module is used for acquiring the refrigerant distribution weight of each indoor unit;
the judging module is used for respectively judging whether the refrigerant distribution weight of each indoor unit is greater than a refrigerant distribution weight average value, and the refrigerant distribution weight average value is an average value of a plurality of refrigerant distribution weight values;
and the control module is used for controlling the opening degree of the electronic expansion valve of the indoor unit to be increased if the judgment result is yes and controlling the opening degree of the electronic expansion valve of the indoor unit to be decreased if the judgment result is no.
The present invention also provides a multi-split air conditioner comprising a computer readable storage medium storing a computer program and a processor, wherein the computer program is read by the processor and when executed, implements the above method.
The present invention also provides a computer-readable storage medium, which is characterized in that the computer-readable storage medium stores a computer program, and the computer program is read and executed by a processor to implement the method.
The control device for optimizing the thermal comfort in the refrigeration mode, the multi-split air conditioner and the computer readable storage medium provided by the invention have the technical effects consistent with the control method for optimizing the thermal comfort in the refrigeration mode.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic flow chart of a control method for optimizing cooling mode thermal comfort provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a control device for optimizing cooling mode thermal comfort according to an embodiment of the present invention.
Description of reference numerals:
201-an acquisition module; 202-a judging module; 203-control module.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Fig. 1 is a schematic flow chart of a control method for optimizing cooling mode thermal comfort according to an embodiment of the present invention, where the method includes:
and S102, obtaining the refrigerant distribution weight of each indoor unit.
Specifically, the temperature drop weight, the preference weight, and the process weight of each indoor unit may be obtained, a weighted average of the temperature drop weight, the preference weight, and the process weight of each indoor unit may be calculated, and the weighted average of each indoor unit may be used as the refrigerant distribution weight of the corresponding indoor unit. That is to say, the refrigerant quantity of each internal machine can be adjusted by combining human behaviors, preferences and indoor temperature drop, and the thermal comfort of the room is optimized.
And S104, respectively judging whether the refrigerant distribution weight of each indoor unit is greater than the refrigerant distribution weight mean value, wherein the refrigerant distribution weight mean value is the average value of the refrigerant distribution weight.
If the refrigerant distribution weight of a certain indoor unit is greater than the average refrigerant distribution weight, the comprehensive refrigerant demand is larger, the opening degree of the electronic expansion valve needs to be increased, and the refrigerant flow is increased; on the contrary, if the refrigerant distribution weight of a certain indoor unit is smaller than the refrigerant distribution weight average value, it is indicated that the comprehensive refrigerant demand is smaller, and the opening degree of the electronic expansion valve needs to be reduced, so that the refrigerant flow is reduced.
And S106, controlling the opening degree of the electronic expansion valve of the indoor unit judged to be yes to increase, and controlling the opening degree of the electronic expansion valve of the indoor unit judged to be no to decrease.
The control method for optimizing thermal comfort in a cooling mode provided in this embodiment can adjust the refrigerant distribution weight of each indoor unit according to the refrigerant demand degree of the indoor units in different rooms, where the indoor unit with a smaller model selection or installed at a remote end generally has a larger refrigerant demand degree than other indoor units, and the refrigerant distribution weight is correspondingly larger, so as to increase the opening of the electronic expansion valve of the corresponding indoor unit and increase the refrigerant flow to the indoor unit with a smaller model selection or installed at a remote end, so that the refrigerant flow of the indoor unit with a smaller model selection or installed at a remote end is close to the actual demand of the corresponding indoor unit for the refrigerant, and thus the cooling effect of the corresponding indoor unit is improved. Of course, if the refrigerant flow rate of some indoor units is smaller than the actual demand due to other reasons, the corresponding refrigerant distribution weights are also larger, so as to increase the opening degree of the electronic expansion valves of the indoor units, so that the refrigerant flow rate can be as close to the actual demand as possible, and the thermal comfort of the indoor environment in the refrigeration mode is improved. After the thermal comfort of the indoor environment is improved, the set temperature and the set wind shield can be adjusted less in the process of using the air conditioner by a user.
The refrigerant distribution weight of each indoor unit can be calculated by adopting the following formula:
C1, the temperature drop weight is negatively related to the temperature drop value after the preset time of starting operation, namely the smaller the current room temperature drop value is, the worse the refrigeration effect of the indoor unit in the room is, the opening degree of an electronic expansion valve of the indoor unit in the room can be increased by increasing the temperature drop weight of the indoor unit in the room, so that the refrigerant distribution quantity of the indoor unit is increased, and the refrigeration effect of the indoor unit is improved; on the contrary, the temperature drop weight of the indoor unit in the room is reduced, and the opening degree of the electronic expansion valve of the indoor unit in the room is reduced, so that the refrigerant distribution quantity of the indoor unit is reduced, and the thermal comfort of the corresponding room can be improved.
Specifically, when the operation time of the air conditioner immediately after starting up does not reach the preset time, the opening degree of the electronic expansion valve of each indoor unit is freely controlled according to the target superheat degree, and the rotating speed of the fan of each indoor unit is controlled according to the set wind gear. The difference value between the starting temperature of each room when the air conditioner is started and the current temperature after the air conditioner runs for a preset time can be used as the temperature drop value of the corresponding room; the current temperature of the room can be obtained again at intervals after the air conditioner runs for a preset time, the newly obtained room temperature is used as the current temperature, the temperature drop weight is calculated again, namely the difference value between the starting temperature and the newly obtained current temperature is calculated again at intervals, and the difference value is used as a new temperature drop weight. Specifically, the preset time period may be set to 30min, and the current temperature may be selected to be obtained again every 2min, that is, after the air conditioner runs for 30min, the current temperature is obtained every 2 min.
The temperature drop weight of each indoor unit can be calculated by adopting the following formula:
C2, the preference weight is negatively correlated with the set temperature and positively correlated with the set wind shield, namely the lower the set temperature of the current room is, the larger the set wind shield is, the preference of the room personnel is cold, and the preference weight of the indoor unit in the room can be increased to increase the opening of the electronic expansion valve of the indoor unit in the room so as to increase the refrigerant distribution amount of the indoor unit; on the contrary, the preference weight of the indoor unit in the room is reduced, and the opening degree of the electronic expansion valve of the indoor unit in the room is reduced, so that the refrigerant distribution quantity of the indoor unit is reduced, and the thermal comfort of the corresponding room can be improved.
Specifically, every time the set temperature or the set wind level of the room changes, the set temperature and the set wind level are obtained again, and the preference weight is calculated again according to the newly obtained set temperature and the set document.
The preference weights of the indoor units can be calculated by adopting the following formula:
C3, the process weight comprises a process temperature weight and a process wind speed weight, and when a user adjusts the wind speed or sets the temperature, the fact that the heat comfort in the current room is sensed by people in the room is poor is indicated, wherein the process temperature weight is in positive correlation with the adjustment value of the set temperature and the change direction is opposite, namely the set temperature of the indoor unit of the current room is increased, the fact that the people in the room sense cold is indicated, the refrigerant distribution amount to the indoor unit can be reduced by reducing the process temperature weight, and the more the set temperature is increased, the cooler the room is indicated, the lower the satisfaction degree of the user on the heat comfort of the room in the using process is, and the reduction amount of the refrigerant distribution amount can be increased by increasing the reduction range of the process temperature weight; otherwise, the process temperature weight is increased, the refrigerant distribution quantity to the indoor unit is increased, and when the set temperature is adjusted more, the satisfaction degree of the user on the room thermal comfort in the use process is lower, and the increase quantity of the refrigerant distribution quantity is increased by increasing the reduction range of the process temperature weight so as to improve the thermal comfort of the corresponding room. The process wind speed weight is in positive correlation with the adjustment value of the set wind level, and the change directions are the same, namely the set wind level of the indoor unit of the current room is adjusted to be low, which indicates that the body of the room is relatively cold, the refrigerant distribution amount to the indoor unit can be reduced by reducing the process wind speed weight, and the more the set wind level is adjusted to be low, which indicates that the body of the room is relatively cold, which indicates that the satisfaction degree of a user on the room thermal comfort is lower in the using process, and the reduction amount of the refrigerant distribution amount can be increased by increasing the reduction range of the process temperature weight; on the contrary, the process temperature weight is increased, the refrigerant distribution quantity of the indoor unit is increased, and when the set wind level is adjusted to be higher, the satisfaction degree of a user on the room thermal comfort in the using process is lower, and the increase quantity of the refrigerant distribution quantity is increased by increasing the reduction range of the process temperature weight so as to improve the thermal comfort of the corresponding room.
Specifically, each time the set temperature or the set wind level of the room changes, the adjustment value of the set temperature and the adjustment value of the set wind level are obtained again, and the process weight is calculated again according to the newly obtained adjustment value of the set temperature and the adjustment value of the set wind level.
The process temperature weight may be assigned according to the following table:
the process wind speed weight may be assigned according to the following table:
| setting the adjustment value of the windshield | -2 | -1 | 0 | 1 | 2 |
| Process wind speed weight | -30 | -10 | 0 | 10 | 30 |
Specifically, the process weights of the indoor units can be calculated by using the following formulas:
wherein,
is the process weight, TX, of the indoor unit numbered i i Is the process temperature weight, FX, of the indoor unit numbered i i The process wind speed weight of the indoor unit with the serial number i is obtained.
The absolute value of the difference between the refrigerant distribution weight and the refrigerant distribution weight mean value can be set to be positively correlated with the opening variation of electronic expansion, that is, the larger the absolute value of the difference between the refrigerant distribution weight and the refrigerant distribution weight mean value is, the larger the difference between the refrigerant flow of the corresponding indoor unit and the actual demand is, and at the moment, the refrigerant flow of the indoor unit can reach the actual demand as soon as possible by increasing the variation of the opening of the electronic expansion valve, so that the thermal comfort in a room can be improved as soon as possible.
Specifically, the opening degree of the electronic expansion of each indoor unit can be calculated by using the following formula:
only numerical calculations, not in units of consideration,
wherein Pi' is a target opening degree of the electronic expansion valve of the indoor unit numbered i, pi is a current opening degree of the electronic expansion valve of the indoor unit numbered i, and Z i Allocating weight to the refrigerant of the indoor unit with the number i,
and distributing the weight average value for the refrigerant.
In step S106, the opening degree of the electronic expansion valve of the indoor unit determined as yes is controlled to be increased, and the rotation speed of the fan of the indoor unit determined as yes is synchronously controlled to be increased, so that the cooling energy can be blown into the room as soon as possible, and the environment in the room can achieve high thermal comfort as soon as possible.
In addition, the method further comprises: when the suction superheat degree of the indoor unit is smaller than a preset threshold value, the risk of liquid return exists, at the moment, the opening degree of an electronic expansion valve of the corresponding indoor unit is controlled to reduce the preset step number, so that liquid return is prevented as far as possible, and the running reliability of the air conditioner is ensured; wherein the preset threshold value can be set to 1 ℃, and the preset number of steps can be set to 5 steps.
The method further comprises the following steps: when the current temperature of the indoor unit is less than or equal to the difference value between the set temperature and the floating temperature, the temperature in the corresponding room is reduced to a sufficiently low value, and at the moment, the electronic expansion valve of the corresponding indoor unit is controlled to be closed to stop refrigeration. Wherein the floating temperature may be set to 2 deg.c.
Fig. 2 is a control device for optimizing thermal comfort in a cooling mode according to an embodiment of the present invention, including:
an obtaining module 201, configured to obtain a refrigerant distribution weight of each indoor unit;
the judging module 202 is configured to respectively judge whether the refrigerant distribution weight of each indoor unit is greater than a refrigerant distribution weight average value, where the refrigerant distribution weight average value is an average value of a plurality of refrigerant distribution weights;
and the control module 203 is used for controlling the opening degree of the electronic expansion valve of the indoor unit which is judged to be yes to be increased, and controlling the opening degree of the electronic expansion valve of the indoor unit which is judged to be no to be decreased.
The control device for optimizing the thermal comfort in the cooling mode provided by this embodiment can implement each process in the above-mentioned control method for optimizing the thermal comfort in the cooling mode, and is not described here again in order to avoid repetition.
The embodiment also provides a multi-split air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium stores a computer program, and the computer program is read by the processor and runs on the processor to realize the control method for optimizing the thermal comfort in the cooling mode.
The present embodiment further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the above-mentioned embodiment of the control method for optimizing cooling mode thermal comfort, and can achieve the same technical effects, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Of course, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments may be implemented by instructing the control device to perform operations through a computer, and the programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the above method embodiments, where the storage medium may be a memory, a magnetic disk, an optical disk, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Finally, it should also be noted that, in this document, the term "comprises/comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A control method for optimizing thermal comfort in a cooling mode, comprising:
acquiring a refrigerant distribution weight of each indoor unit;
respectively judging whether the refrigerant distribution weight of each indoor unit is greater than a refrigerant distribution weight average value, wherein the refrigerant distribution weight average value is an average value of a plurality of refrigerant distribution weight values;
and controlling the opening degree of the electronic expansion valve of the indoor unit which is judged to be yes to increase, and controlling the opening degree of the electronic expansion valve of the indoor unit which is judged to be not to decrease.
2. The control method for optimizing thermal comfort in a cooling mode according to claim 1, wherein the obtaining of the refrigerant distribution weight of each indoor unit includes:
acquiring a temperature drop weight, a preference weight and a process weight of each indoor unit; the temperature drop weight is negatively correlated with a temperature drop value after the preset time length of starting operation, the preference weight is negatively correlated with the set temperature and positively correlated with the set wind gear, the process weight comprises a process temperature weight and a process wind speed weight, the process temperature weight is positively correlated with an adjustment value of the set temperature and has an opposite changing direction, and the process wind speed weight is positively correlated with the adjustment value of the set wind gear and has the same changing direction;
and respectively calculating the weighted average value of the temperature drop weight, the preference weight and the process weight of each indoor unit, and taking the weighted average value of each indoor unit as the refrigerant distribution weight of the corresponding indoor unit.
3. The control method for optimizing cooling mode thermal comfort according to claim 2,
ΔT i ＝TS i -T i ,i＝1，2…N；
wherein, delta T i Is the temperature drop value, TS, of the indoor unit numbered i i Starting temperature, T, of the indoor unit numbered i i The current temperature of the indoor unit is numbered i, and N is the total number of the opened indoor units;
the number is i, A is the regulating coefficient, delta T MAX Is N Δ T i Maximum of (1) i Corresponding temperature drop value.
4. The control method for optimizing cooling mode thermal comfort according to claim 2,
wherein, F i Setting a wind shield, TD, for the indoor unit numbered i i Setting the temperature of the indoor unit with the number i;
is the preference weight of the indoor unit with the serial number i, B is an adjusting coefficient, TT MAX Is TT i Is measured.
5. The control method for optimizing cooling mode thermal comfort according to any one of claims 1 to 4, wherein an absolute value of a difference between the refrigerant distribution weight and the average refrigerant distribution weight is positively correlated to an opening variation of the electronic expansion valve.
6. A control method for optimizing cooling mode thermal comfort according to any one of claims 1-4, further comprising:
and controlling the rotation speed of the fan of the indoor unit which is judged to be yes to increase.
7. A control method for optimizing cooling mode thermal comfort according to any one of claims 1-4, further comprising:
and when the suction superheat degree of the indoor unit is smaller than a preset threshold value, controlling the opening degree of the electronic expansion valve of the corresponding indoor unit to reduce a preset step number.
8. A control apparatus for optimizing thermal comfort in a cooling mode, comprising:
the acquisition module is used for acquiring the refrigerant distribution weight of each indoor unit;
the judging module is used for respectively judging whether the refrigerant distribution weight of each indoor unit is greater than a refrigerant distribution weight average value, and the refrigerant distribution weight average value is an average value of a plurality of refrigerant distribution weight values;
and the control module is used for controlling the opening degree of the electronic expansion valve of the indoor unit to be increased if the judgment result is yes and controlling the opening degree of the electronic expansion valve of the indoor unit to be decreased if the judgment result is no.
9. A multi-split air conditioner comprising a computer-readable storage medium storing a computer program and a processor, wherein the computer program is read by the processor and when executed, implements the method of any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the method of any one of claims 1-7.
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