CN113819593A - Air conditioner refrigerant flow control method and device and air conditioner - Google Patents
Air conditioner refrigerant flow control method and device and air conditioner Download PDFInfo
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- CN113819593A CN113819593A CN202110937510.1A CN202110937510A CN113819593A CN 113819593 A CN113819593 A CN 113819593A CN 202110937510 A CN202110937510 A CN 202110937510A CN 113819593 A CN113819593 A CN 113819593A
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 127
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000004378 air conditioning Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000004590 computer program Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
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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
Abstract
The invention provides an air conditioner refrigerant flow control method and device and an air conditioner. The method for controlling the flow of the air conditioner refrigerant comprises the following steps: acquiring the working state of the air conditioner; acquiring the temperature of each first branch of the evaporator; correspondingly adjusting the refrigerant flow of each first branch according to the state of the air conditioner and the temperature of each first branch; acquiring the temperature of each second branch of the condenser; and correspondingly adjusting the refrigerant flow of each second branch according to the state of the air conditioner and the temperature of each second branch. The method for controlling the flow of the air conditioner refrigerant can correspondingly provide proper refrigerant flow according to the temperatures of the branches of the evaporator and the condenser in the using state of the air conditioner, is favorable for improving the working efficiency of the air conditioner, and plays a role in energy conservation and emission reduction.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method and a device for controlling the flow of air conditioner refrigerants and an air conditioner.
Background
The heat exchanger (evaporator, condenser) of air conditioner generally has several routes of reposition of redundant personnel, when refrigerant flow on the branch road distributes unevenly, causes the heat transfer effect variation of heat exchanger easily, reduces heat exchange efficiency. When the flow of the evaporator branch refrigerant is uneven, the branch refrigerant with small flow is easy to evaporate completely in advance, and the heat exchange effect is poor; when the flow of the condenser branch refrigerant is uneven, the branch refrigerant with small flow is easy to be completely liquefied in advance, and the heat exchange effect is poor. Therefore, how to automatically adjust the flow rate of the branch refrigerant and improve the heat exchange efficiency is a technical problem which needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
The invention provides a method and a device for controlling the flow of a refrigerant of an air conditioner and the air conditioner, which are used for solving the problem that the heat exchange efficiency of the air conditioner is influenced by uneven flow of the refrigerant of a hollow heat exchanger in the prior art.
In order to solve the problems in the prior art, an embodiment of the present invention provides an air conditioner refrigerant flow control method, including:
acquiring the working state of the air conditioner;
acquiring the temperature of each first branch of the evaporator;
correspondingly adjusting the refrigerant flow of each first branch according to the state of the air conditioner and the temperature of each first branch;
acquiring the temperature of each second branch of the condenser;
and correspondingly adjusting the refrigerant flow of each second branch according to the state of the air conditioner and the temperature of each second branch.
According to the method for controlling the flow rate of the refrigerant of the air conditioner, the step of correspondingly adjusting the flow rate of the refrigerant of each first branch according to the state of the air conditioner and the temperature of each first branch comprises the following steps:
if the air conditioner is in a heating state and the temperature of the first branch is greater than a first temperature threshold, reducing the refrigerant flow of the first branch, and if the temperature of the first branch is less than the first temperature threshold, increasing the refrigerant flow of the first branch;
if the air conditioner is in a refrigerating state and the temperature of the first branch is greater than a second temperature threshold value, the refrigerant flow of the first branch is increased, and if the temperature of the first branch is less than the second temperature threshold value, the refrigerant flow of the first branch is decreased.
According to the method for controlling the flow of the air conditioner refrigerant, the first temperature threshold is set to be 39.5-40.5 ℃, and the second temperature threshold is set to be 11.5-12.5 ℃.
According to the method for controlling the flow of the refrigerant of the air conditioner, if the air conditioner is in a heating state, the temperature of the first branch is 39.5-40.5 ℃, the flow of the first branch is 50%, the temperature of the first branch is 40.5-41.5 ℃, the flow of the first branch is 40%, the temperature of the first branch is 38.5-39.5 ℃, and the flow of the first branch is 60%;
if the air conditioner is in a refrigerating state, the temperature of the first branch is 11.5-12.5 ℃, the flow rate of the first branch is set to be 50%, the temperature of the first branch is 10.5-11.5 ℃, the flow rate of the first branch is set to be 40%, the temperature of the first branch is 12.5-13.5 ℃, and the flow rate of the first branch is set to be 60%.
According to the method for controlling the flow rate of the refrigerant of the air conditioner, the step of correspondingly adjusting the flow rate of the refrigerant of each second branch according to the state of the air conditioner and the temperature of each second branch comprises the following steps:
if the air conditioner is in a heating state and the temperature of the second branch is greater than a third temperature threshold, increasing the refrigerant flow of the second branch, and if the temperature of the second branch is less than the third temperature threshold, reducing the refrigerant flow of the second branch;
if the air conditioner is in a refrigerating state and the temperature of the second branch is greater than a fourth temperature threshold, the refrigerant flow of the first branch is reduced, and if the temperature of the second branch is less than the fourth temperature threshold, the refrigerant flow of the second branch is increased.
According to the method for controlling the flow of the air conditioner refrigerant, the third temperature threshold is set to be 2.5-3.5 ℃, and the fourth temperature threshold is set to be 45.5-46.5 ℃.
According to the method for controlling the flow of the refrigerant of the air conditioner, if the air conditioner is in a heating state, the temperature of the second branch is 2.5-3.5 ℃, the flow of the second branch is set to be 50%, the temperature of the second branch is 1.5-2.5 ℃, the flow of the second branch is set to be 40%, the temperature of the second branch is 3.5-4.5 ℃, and the flow of the second branch is set to be 60%;
if the air conditioner is in a refrigerating state, the temperature of the second branch is 45.5-46.5 ℃, the flow rate of the second branch is set to be 50%, the temperature of the second branch is 46.5-47.5 ℃, the flow rate of the second branch is set to be 40%, the temperature of the second branch is 44.5-45.5 ℃, and the flow rate of the second branch is set to be 60%.
The present invention also provides a control apparatus comprising:
the state acquisition module is used for acquiring the working state of the air conditioner;
the first temperature measuring module is used for acquiring the temperature of each first branch of the evaporator;
the first flow adjusting module is used for correspondingly adjusting the refrigerant flow of each first branch according to the state of the air conditioner and the temperature of each first branch;
the second temperature measuring module is used for acquiring the temperature of each second branch of the condenser; and the number of the first and second groups,
and the second flow measurement module is used for correspondingly adjusting the refrigerant flow of each second branch according to the state of the air conditioner and the temperature of each second branch.
The invention also provides an air conditioner, and the method for controlling the flow of the air conditioner refrigerant is applied to any one of the air conditioners.
According to an aspect of the present invention, there is provided an air conditioner including:
the evaporator is provided with a plurality of first branches, and each first branch is provided with a first throttle valve; and the number of the first and second groups,
the condenser is provided with a plurality of second branches, and each second branch is provided with a second throttling valve;
the opening degree of each first throttle valve and each second throttle valve can be adjusted, each first throttle valve is used for adjusting the refrigerant flow of the corresponding first branch, and each second throttle valve is used for adjusting the refrigerant flow of the corresponding second branch.
According to the method for controlling the flow of the air conditioner refrigerant, the temperature of each branch on the evaporator and the condenser of the air conditioner can be obtained in the using process of the air conditioner, the refrigerant flow corresponding to each branch is adjusted according to the temperature of each branch, the uniform flow of the refrigerant of each branch of the evaporator and the condenser of the air conditioner can be ensured, the heat exchange efficiency of the air conditioner is improved, and meanwhile, a certain effect of energy conservation and emission reduction is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for controlling a refrigerant flow of an air conditioner according to the present invention;
fig. 2 is a schematic structural diagram of an electronic device provided in the present invention.
Reference numerals:
1: a processor; 2: a communication interface; 3: a memory;
4: a communication bus.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious 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 air conditioner refrigerant flow control method of the present invention is described with reference to fig. 1-2. Referring to fig. 1, the present invention provides a method for controlling a refrigerant flow of an air conditioner, including the following steps:
s10, acquiring the working state of the air conditioner;
s20, acquiring the temperature of each first branch of the evaporator;
s30, correspondingly adjusting the refrigerant flow of each first branch according to the state of the air conditioner and the temperature of each first branch;
s40, acquiring the temperature of each second branch of the condenser;
and S50, correspondingly adjusting the refrigerant flow of each second branch according to the state of the air conditioner and the temperature of each second branch.
The heat exchanger (evaporator, condenser) of air conditioner generally has several routes of reposition of redundant personnel, when refrigerant flow on the branch road distributes unevenly, causes the heat transfer effect variation of heat exchanger easily, reduces heat exchange efficiency. When the flow of the evaporator branch refrigerant is uneven, the branch refrigerant with small flow is easy to evaporate completely in advance, and the heat exchange effect is poor; when the flow of the condenser branch refrigerant is uneven, the branch refrigerant with small flow is easy to be completely liquefied in advance, and the heat exchange effect is poor.
In the technical scheme provided by the invention, the temperature of each first branch of an evaporator is obtained, and the refrigerant flow of the first branch is correspondingly adjusted according to the temperature of each first branch; and acquiring the temperature of each second branch of the condenser, and correspondingly adjusting the refrigerant flow of each second branch according to the temperature of each second branch. Therefore, the refrigerant flow of each first branch of the evaporator is uniform, the refrigerant flow of each second branch of the condenser is uniform, the heat exchange efficiency of the air conditioner can be effectively improved, and the condition that the refrigerant is gasified or liquefied in advance is prevented. It should be noted that the evaporator and the condenser are both in the air-conditioning heating state, and in the subsequent steps, no name conversion is performed.
Further, the step S30 of correspondingly adjusting the refrigerant flow rate of each first branch according to the state of the air conditioner and the temperature of each first branch includes:
s31, if the air conditioner is in a heating state and the temperature of the first branch is greater than a first temperature threshold, reducing the refrigerant flow of the first branch, and if the temperature of the first branch is less than the first temperature threshold, increasing the refrigerant flow of the first branch;
and S32, if the air conditioner is in a refrigerating state and the temperature of the first branch is greater than a second temperature threshold, increasing the refrigerant flow of the first branch, and if the temperature of the first branch is less than the second temperature threshold, reducing the refrigerant flow of the first branch.
When the air conditioner is in a heating state, if the temperature of the first branch is greater than a first temperature threshold, the refrigerant flow of the first branch is too high, and the refrigerant flow of the first branch needs to be reduced; similarly, if the temperature of the first branch is lower than the first temperature threshold, the refrigerant flow rate of the first branch is too low, and the refrigerant flow rate of the first branch needs to be increased.
When the air conditioner is in a refrigerating state, the evaporator is used as a condenser, if the temperature of the first branch is greater than a second temperature threshold value, the refrigerant flow of the first branch is too low, and the refrigerant flow of the first branch needs to be increased; similarly, if the temperature of the first branch is lower than the second temperature threshold, the refrigerant flow rate of the first branch is too high, and the refrigerant flow rate of the first branch needs to be reduced.
Therefore, under the cooling or heating state, the refrigerant flow of each first branch can be correspondingly adjusted according to the temperature, so that the refrigerant flow of each first branch tends to be uniform, and the heat exchange efficiency of the evaporator is improved.
Specifically, the first temperature threshold is set to 39.5 ℃ -40.5 ℃, and the second temperature threshold is set to 11.5 ℃ -12.5 ℃.
Specifically, in the technical scheme provided by the invention, if the air conditioner is in a heating state, the temperature of the first branch is 39.5-40.5 ℃, the flow rate of the first branch is 50%, the temperature of the first branch is 40.5-41.5 ℃, the flow rate of the first branch is 40%, the temperature of the first branch is 41.5-42 ℃, and the flow rate of the first branch is 30%; the temperature of the first branch is 38.5-39.5 ℃, the flow rate of the first branch is 60%, the temperature of the first branch is 38-38.5 ℃, and the flow rate of the first branch is 70%;
if the air conditioner is in a refrigerating state, the temperature of the first branch is 11.5-12.5 ℃, the flow rate of the first branch is set to be 50%, the temperature of the first branch is 10.5-11.5 ℃, the flow rate of the first branch is 40%, the temperature of the first branch is 10-10.5 ℃, and the flow rate of the first branch is set to be 30%; the temperature of the first branch is 12.5-13.5 ℃, the flow rate of the first branch is 60%, the temperature of the first branch is 13.5-14 ℃, and the flow rate of the first branch is 70%;
it should be noted that the refrigerant filling in the first branch is completely 100% of the flow rate, and a flow rate of 50% may be understood as an opening of the branch is only half open, and a flow rate of 60% may be understood as an opening of the branch is 60% open. The invention provides the temperature of the first branch and the corresponding refrigerant flow rate rule, and a user can also reduce or enlarge the temperature threshold according to the requirement, which is not limited by the invention.
Further, the step S50 of adjusting the refrigerant flow rate of each second branch according to the state of the air conditioner and the temperature of each second branch correspondingly includes:
s51, if the air conditioner is in a heating state and the temperature of the second branch is greater than a third temperature threshold, increasing the refrigerant flow of the second branch, and if the temperature of the second branch is less than the third temperature threshold, reducing the refrigerant flow of the second branch;
and S52, if the air conditioner is in a refrigerating state and the temperature of the second branch is greater than a fourth temperature threshold, reducing the refrigerant flow of the first branch, and if the temperature of the second branch is less than the fourth temperature threshold, increasing the refrigerant flow of the second branch.
When the air conditioner is in a heating state, if the temperature of the second branch is greater than a third temperature threshold, the refrigerant flow of the second branch is too low, and the refrigerant flow of the second branch needs to be increased; similarly, if the temperature of the second branch is lower than the first temperature threshold, the refrigerant flow rate of the second branch is excessive, and the refrigerant flow rate of the second branch needs to be reduced.
When the air conditioner is in a refrigerating state, the condenser is used as an evaporator, if the temperature of the second branch is greater than a fourth temperature threshold value, the refrigerant flow of the second branch is too high, and the refrigerant flow of the second branch needs to be reduced; similarly, if the temperature of the second branch is lower than the fourth temperature threshold, the refrigerant flow rate of the second branch is too low, and the refrigerant flow rate of the second branch needs to be increased.
Therefore, under the cooling or heating state, the refrigerant flow of each second branch can be correspondingly adjusted according to the temperature, so that the refrigerant flow of each second branch tends to be uniform, and the heat exchange efficiency of the condenser is improved.
Specifically, the third temperature threshold is set to 2.5 ℃ to 3.5 ℃, and the fourth temperature threshold is set to 45.5 ℃ to 46.5 ℃.
Specifically, if the air conditioner is in a heating state, the temperature of the second branch is 2.5-3.5 ℃, the flow rate of the second branch is set to be 50%, the temperature of the second branch is 1.5-2.5 ℃, the flow rate of the second branch is set to be 40%, the temperature of the second branch is 1-1.5 ℃, and the flow rate of the second branch is set to be 30%; the temperature of the second branch is 3.5-4.5 ℃, the flow rate of the second branch is set to be 60%, the temperature of the second branch is 4.5-5 ℃, and the flow rate of the second branch is set to be 70%;
if the air conditioner is in a refrigerating state, the temperature of the second branch is 45.5-46.5 ℃, the flow rate of the second branch is set to be 50%, the temperature of the second branch is 46.5-47.5 ℃, the flow rate of the second branch is 40%, the temperature of the second branch is 47.5-48 ℃, and the flow rate of the second branch is set to be 30%; the temperature of the second branch is 44.5-45.5 ℃, the flow rate of the second branch is set to be 60%, the temperature of the second branch is 44-44.5 ℃, and the flow rate of the first branch is set to be 70%.
The control device provided by the present invention is described below, and the control device described below and the air conditioner refrigerant flow control method described above may be referred to correspondingly.
The present invention also provides a control apparatus comprising: the state acquisition module is used for acquiring the working state of the air conditioner; the first temperature measuring module is used for acquiring the temperature of each first branch of the evaporator; the first flow adjusting module is used for correspondingly adjusting the refrigerant flow of each first branch according to the state of the air conditioner and the temperature of each first branch; the second temperature measuring module is used for acquiring the temperature of each second branch of the condenser; and the second flow measurement module is used for correspondingly adjusting the refrigerant flow of each second branch according to the state of the air conditioner and the temperature of each second branch.
The invention also provides an air conditioner, and the method for controlling the flow of the refrigerant of the air conditioner is applied to any one of the air conditioners.
Further, the air conditioner includes: the evaporator is provided with a plurality of first branches, and each first branch is provided with a first throttling valve; the condenser is provided with a plurality of second branches, and each second branch is provided with a second throttling valve; the opening degree of each first throttle valve and each second throttle valve can be adjusted, each first throttle valve is used for adjusting the refrigerant flow of the corresponding first branch, and each second throttle valve is used for adjusting the refrigerant flow of the corresponding second branch.
It should be noted that the temperatures of the first branch and the second branch are the temperatures of the middle portions of the branches, and the first throttle valve and the second throttle valve may be disposed at the openings of the corresponding branches to adjust the opening degrees of the openings of the branches. Of course, the first throttle valve and the second throttle valve may also be disposed in the middle of the branch, and the above-mentioned implementation effect may also be achieved, but the present invention is not limited thereto.
The present invention further provides an electronic device, and fig. 2 provided in the present invention illustrates an entity structure schematic diagram of the electronic device, as shown in fig. 2, the electronic device may include: the system comprises a processor (processor)1, a communication Interface (communication Interface)2, a memory (memory)3 and a communication bus 4, wherein the processor 1, the communication Interface 2 and the memory 3 complete mutual communication through the communication bus 4. The processor 1 may call a logic instruction in the memory 3 to execute an air conditioner refrigerant flow control method, where the method includes:
s10, acquiring the working state of the air conditioner;
s20, acquiring the temperature of each first branch of the evaporator;
s30, correspondingly adjusting the refrigerant flow of each first branch according to the state of the air conditioner and the temperature of each first branch;
s40, acquiring the temperature of each second branch of the condenser;
and S50, correspondingly adjusting the refrigerant flow of each second branch according to the state of the air conditioner and the temperature of each second branch.
In addition, the logic instructions in the memory 3 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention further provides a non-transitory computer readable storage medium, having a computer program stored thereon, where the computer program is implemented by a processor to execute the air conditioner refrigerant flow control methods provided above, the method including:
s10, acquiring the working state of the air conditioner;
s20, acquiring the temperature of each first branch of the evaporator;
s30, correspondingly adjusting the refrigerant flow of each first branch according to the state of the air conditioner and the temperature of each first branch;
s40, acquiring the temperature of each second branch of the condenser;
and S50, correspondingly adjusting the refrigerant flow of each second branch according to the state of the air conditioner and the temperature of each second branch.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for controlling the flow of air conditioner refrigerants is characterized by comprising the following steps:
acquiring the working state of the air conditioner;
acquiring the temperature of each first branch of the evaporator;
correspondingly adjusting the refrigerant flow of each first branch according to the state of the air conditioner and the temperature of each first branch;
acquiring the temperature of each second branch of the condenser;
and correspondingly adjusting the refrigerant flow of each second branch according to the state of the air conditioner and the temperature of each second branch.
2. The method for controlling refrigerant flow of an air conditioner according to claim 1, wherein the step of correspondingly adjusting the refrigerant flow of each first branch according to the state of the air conditioner and the temperature of each first branch comprises:
if the air conditioner is in a heating state and the temperature of the first branch is greater than a first temperature threshold, reducing the refrigerant flow of the first branch, and if the temperature of the first branch is less than the first temperature threshold, increasing the refrigerant flow of the first branch;
if the air conditioner is in a refrigerating state and the temperature of the first branch is greater than a second temperature threshold value, the refrigerant flow of the first branch is increased, and if the temperature of the first branch is less than the second temperature threshold value, the refrigerant flow of the first branch is decreased.
3. An air conditioning refrigerant flow control method as claimed in claim 2, wherein the first temperature threshold is set to 39.5-40.5 ℃ and the second temperature threshold is set to 11.5-12.5 ℃.
4. The method for controlling refrigerant flow of an air conditioner according to claim 3, wherein if the air conditioner is in a heating state, the temperature of the first branch is 39.5 ℃ to 40.5 ℃, the flow rate of the first branch is 50%, the temperature of the first branch is 40.5 ℃ to 41.5 ℃, the flow rate of the first branch is 40%, the temperature of the first branch is 38.5 ℃ to 39.5 ℃, and the flow rate of the first branch is 60%;
if the air conditioner is in a refrigerating state, the temperature of the first branch is 11.5-12.5 ℃, the flow rate of the first branch is set to be 50%, the temperature of the first branch is 10.5-11.5 ℃, the flow rate of the first branch is set to be 40%, the temperature of the first branch is 12.5-13.5 ℃, and the flow rate of the first branch is set to be 60%.
5. The method for controlling refrigerant flow of an air conditioner according to claim 1, wherein the step of correspondingly adjusting the refrigerant flow of each second branch according to the state of the air conditioner and the temperature of each second branch comprises:
if the air conditioner is in a heating state and the temperature of the second branch is greater than a third temperature threshold, increasing the refrigerant flow of the second branch, and if the temperature of the second branch is less than the third temperature threshold, reducing the refrigerant flow of the second branch;
if the air conditioner is in a refrigerating state and the temperature of the second branch is greater than a fourth temperature threshold, the refrigerant flow of the first branch is reduced, and if the temperature of the second branch is less than the fourth temperature threshold, the refrigerant flow of the second branch is increased.
6. An air conditioning refrigerant flow control method according to claim 5, wherein the third temperature threshold is set to 2.5-3.5 ℃ and the fourth temperature threshold is set to 45.5-46.5 ℃.
7. The method for controlling refrigerant flow of an air conditioner according to claim 6, wherein if the air conditioner is in a heating state, the temperature of the second branch is 2.5 ℃ to 3.5 ℃, the flow rate of the second branch is set to 50%, the temperature of the second branch is 1.5 ℃ to 2.5 ℃, the flow rate of the second branch is set to 40%, the temperature of the second branch is 3.5 ℃ to 4.5 ℃, and the flow rate of the second branch is set to 60%;
if the air conditioner is in a refrigerating state, the temperature of the second branch is 45.5-46.5 ℃, the flow rate of the second branch is set to be 50%, the temperature of the second branch is 46.5-47.5 ℃, the flow rate of the second branch is set to be 40%, the temperature of the second branch is 44.5-45.5 ℃, and the flow rate of the second branch is set to be 60%.
8. A control device, comprising:
the state acquisition module is used for acquiring the working state of the air conditioner;
the first temperature measuring module is used for acquiring the temperature of each first branch of the evaporator;
the first flow adjusting module is used for correspondingly adjusting the refrigerant flow of each first branch according to the state of the air conditioner and the temperature of each first branch;
the second temperature measuring module is used for acquiring the temperature of each second branch of the condenser; and the number of the first and second groups,
and the second flow measurement module is used for correspondingly adjusting the refrigerant flow of each second branch according to the state of the air conditioner and the temperature of each second branch.
9. An air conditioner characterized by applying the method for controlling the flow rate of the refrigerant of the air conditioner as claimed in any one of claims 1 to 7.
10. The air conditioner according to claim 9, wherein the air conditioner comprises:
the evaporator is provided with a plurality of first branches, and each first branch is provided with a first throttle valve; and the number of the first and second groups,
the condenser is provided with a plurality of second branches, and each second branch is provided with a second throttling valve;
the opening degree of each first throttle valve and each second throttle valve can be adjusted, each first throttle valve is used for adjusting the refrigerant flow of the corresponding first branch, and each second throttle valve is used for adjusting the refrigerant flow of the corresponding second branch.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110937510.1A CN113819593A (en) | 2021-08-16 | 2021-08-16 | Air conditioner refrigerant flow control method and device and air conditioner |
| PCT/CN2022/082792 WO2023019946A1 (en) | 2021-08-16 | 2022-03-24 | Air conditioner refrigerant flow rate control method and apparatus, and air conditioner |
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| CN202110937510.1A CN113819593A (en) | 2021-08-16 | 2021-08-16 | Air conditioner refrigerant flow control method and device and air conditioner |
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| CN113819593A true CN113819593A (en) | 2021-12-21 |
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| CN114484806A (en) * | 2022-03-01 | 2022-05-13 | 青岛海尔空调器有限总公司 | Control method and control system for air conditioner sterilization, electronic equipment and storage medium |
| CN114659305A (en) * | 2022-03-25 | 2022-06-24 | 青岛海尔空调器有限总公司 | Control method and control system for air conditioner refrigerant circulation, electronic equipment and medium |
| CN115164274A (en) * | 2022-06-01 | 2022-10-11 | 青岛海尔空调电子有限公司 | Indoor unit air volume control method |
| WO2023019946A1 (en) * | 2021-08-16 | 2023-02-23 | 青岛海尔空调器有限总公司 | Air conditioner refrigerant flow rate control method and apparatus, and air conditioner |
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| Publication number | Publication date |
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| WO2023019946A1 (en) | 2023-02-23 |
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Application publication date: 20211221 |