WO2023115919A1

WO2023115919A1 - Method and apparatus for adjusting refrigerant of air conditioner, and air conditioner and storage medium

Info

Publication number: WO2023115919A1
Application number: PCT/CN2022/105419
Authority: WO
Inventors: 王诗洋; 程惠鹏; 李鑫; 宁贻江
Original assignee: 青岛海尔空调器有限总公司; 青岛海尔空调电子有限公司; 海尔智家股份有限公司
Priority date: 2021-12-23
Filing date: 2022-07-13
Publication date: 2023-06-29
Also published as: CN116336619A

Abstract

The present application relates to the technical field of smart household appliances. Disclosed is a method for adjusting a refrigerant of an air conditioner. An air conditioner comprises: a liquid storage tank, which is connected to a refrigerant circulation system of the air conditioner; a piston, which is arranged in the liquid storage tank; and a driving mechanism, which is connected to the piston and is controlled to move to change the position of the piston, wherein when the position of the piston is controlled to change, the liquid storage tank can collect a refrigerant from the refrigerant circulation system or release the stored refrigerant to the refrigerant circulation system, so as to adjust the amount of the refrigerant in the refrigerant circulation system. The method comprises: acquiring an operation mode of an air conditioner; determining an operation frequency of a compressor according to the operation mode; and controlling the movement of a driving mechanism according to the operation mode and the operation frequency. Since the distance whereby a driving mechanism drives a piston to move is determined, the change amount of a refrigerant can be determined, so as to improve the accuracy of adjustment of the refrigerant in a refrigerant circulation system. Further disclosed in the present application are an apparatus for adjusting a refrigerant of an air conditioner, and an air conditioner and a storage medium.

Description

Method and device for adjusting air-conditioning refrigerant, air conditioner, storage medium

This application is based on a Chinese patent application with application number 202111588999.2 and a filing date of December 23, 2021, and claims the priority of this Chinese patent application. The entire content of this Chinese patent application is hereby incorporated by reference into this application.

technical field

The present application relates to the technical field of smart home appliances, for example, to a method and device for adjusting refrigerant of an air conditioner, an air conditioner, and a storage medium.

Background technique

At present, the air conditioner realizes the cooling and heating functions through the refrigerant in the refrigerant circulation system. Under different operating modes and different loads, the amount of refrigerant required by the refrigerant circulation system is different and needs to be adjusted.

The method for adjusting the air-conditioning refrigerant in the prior art includes: collecting the current pressure value at any position in the connecting pipe between the compressor outlet and the throttle valve, and the throttle valve and the compressor outlet are directly connected through the connecting pipe; Set the solenoid valve opening value comparison: When the current pressure value is greater than the preset solenoid valve opening value, the solenoid valve is opened to allow a part of the refrigerant to automatically flow into the liquid storage tank, reducing the circulation of the air-conditioning refrigerant.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in related technologies:

This technology is to reduce the amount of refrigerant in the refrigerant circulation system by opening the solenoid valve. However, the refrigerant automatically flows into the liquid storage tank during the opening process of the electromagnetic valve, the amount of refrigerant in the liquid storage tank is difficult to determine, and the accuracy of refrigerant adjustment is low.

Contents of the invention

In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is presented below. The summary is not intended to be an extensive overview nor to identify key/important elements or to delineate the scope of these embodiments, but rather serves as a prelude to the detailed description that follows.

Embodiments of the present disclosure provide a method and device for adjusting refrigerant of an air conditioner, an air conditioner, and a storage medium, so as to improve the accuracy of refrigerant adjustment in a refrigerant circulation system.

In some embodiments, the air conditioner includes: a liquid storage tank, connected to the refrigerant circulation system of the air conditioner; a piston, arranged in the liquid storage tank; a driving mechanism, connected to the piston, and controlled to move to change the position of the piston; Under the condition that the position is changed under control, the liquid storage tank can collect and store the refrigerant in the refrigerant circulation system or release the stored refrigerant to the refrigerant circulation system, so as to adjust the amount of refrigerant in the refrigerant circulation system; the method includes: obtaining the operation of the air conditioner mode; according to the operation mode, determine the operation frequency of the compressor; according to the operation mode and operation frequency, control the movement of the driving mechanism.

Optionally, determining the operating frequency of the compressor according to the operating mode includes: detecting the indoor ambient temperature; determining the difference between the indoor ambient temperature and the target temperature set by the user; determining the difference between the operating mode and the temperature according to the operating mode The operating frequency of the compressor corresponding to the temperature difference.

Optionally, controlling the movement of the driving mechanism according to the operating mode and operating frequency includes: determining the target refrigerant amount of the refrigerant circulation system according to the operating mode and operating frequency; determining the difference between the total refrigerant amount and the target refrigerant amount of the refrigerant circulation system; According to the difference in the amount of refrigerant, the drive mechanism is controlled to move.

Optionally, controlling the movement of the drive mechanism according to the difference in the amount of refrigerant includes: determining the target position of the piston according to the difference in the amount of refrigerant; determining the current position of the piston; determining the difference between the target position and the current position; If the difference is not zero, the driving mechanism is controlled to move according to the difference in position.

Optionally, the method further includes: before controlling the driving mechanism to move according to the position difference, opening the solenoid valve; after controlling the driving mechanism to move according to the position difference, closing the solenoid valve.

Optionally, one end of the liquid storage tank is opened to form a refrigerant flow port; the air conditioner also includes a solenoid valve connected between the refrigerant flow port and the refrigerant circulation system; the movement of the driving mechanism is controlled according to the difference in position, including: the difference in position If it is greater than zero, control the driving mechanism to move away from the direction of the refrigerant circulation port; if the position difference is less than zero, control the driving mechanism to move toward the direction of the refrigerant circulation port.

Optionally, the driving mechanism is controlled to move in the direction away from the refrigerant flow port according to the position difference; and the drive mechanism is controlled to move in the direction of the refrigerant flow port according to the position difference.

In some embodiments, the device includes a processor and a memory storing program instructions, and the processor is configured to execute the above-mentioned method for regulating air-conditioning refrigerant when running the program instructions.

In some embodiments, the air conditioner includes: a liquid storage tank, one end of which is opened to form a refrigerant flow port, and the other end is provided with a through hole; a piston is arranged in the liquid storage tank, and separates the interior of the liquid storage tank into mutually disconnected parts. The storage space and the drive space, the storage space communicates with the refrigerant circulation port, and the drive space communicates with the through hole; the solenoid valve, one end is connected with the refrigerant circulation port, and the other end is connected with the refrigerant circulation system; the drive mechanism, one end is located in the drive space, and is fixed to the piston The connection, the other end of which passes through the through hole, is located outside the liquid storage tank; and, the above-mentioned device for regulating the refrigerant of the air conditioner.

In some embodiments, the storage medium stores program instructions, and when the program instructions are executed, the above-mentioned method for adjusting the refrigerant of the air conditioner is executed.

The method and device, air conditioner, and storage medium for adjusting air-conditioning refrigerant provided by the embodiments of the present disclosure can achieve the following technical effects:

Obtain the current operating mode of the air conditioner. Determine the operating frequency of the compressor according to the current operating mode. Since the amount of refrigerant required in the refrigerant circulation system is different under different operating modes and operating frequencies, the control drive mechanism moves to change the position of the piston. When the refrigerant circulation system needs to supplement the refrigerant, the refrigerant in the liquid storage tank is discharged through the piston. When the refrigerant circulation system needs to release the refrigerant, the refrigerant in the liquid storage tank is absorbed by the piston. Since the distance that the driving mechanism drives the piston to move is determined, the amount of change of the refrigerant can be determined, so as to improve the accuracy of refrigerant regulation in the refrigerant circulation system.

The foregoing general description and the following description are exemplary and explanatory only and are not intended to limit the application.

Description of drawings

One or more embodiments are exemplified by the corresponding drawings, and these exemplifications and drawings do not constitute a limitation to the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, The drawings are not limited to scale and in which:

FIG. 1 is a schematic structural diagram of an air conditioner provided by an embodiment of the present disclosure;

Fig. 2 is a schematic structural diagram of a liquid storage tank provided by an embodiment of the present disclosure;

Fig. 3 is a schematic diagram of the electrical connection of an air conditioner provided by an embodiment of the present disclosure;

Fig. 4 is a schematic diagram of a method for regulating air-conditioning refrigerant provided by an embodiment of the present disclosure;

Fig. 5 is a schematic diagram of another method for regulating air-conditioning refrigerant provided by an embodiment of the present disclosure;

Fig. 6 is a schematic diagram of another method for regulating air-conditioning refrigerant provided by an embodiment of the present disclosure;

Fig. 7 is a schematic diagram of another method for regulating air-conditioning refrigerant provided by an embodiment of the present disclosure;

Fig. 8 is a schematic diagram of another method for regulating air-conditioning refrigerant provided by an embodiment of the present disclosure;

Fig. 9 is a schematic diagram of a device for regulating air-conditioning refrigerant provided by an embodiment of the present disclosure.

Reference signs:

1: air conditioner; 11: liquid storage tank; 12: piston; 13: solenoid valve; 14: driving mechanism; 15: compressor; 16: four-way valve; 17: outdoor heat exchanger; 18: throttling element; 19: Indoor heat exchanger; 20: temperature sensor; 21: ranging sensor; 41: processor; 42: memory; 43: communication interface; 44: bus; 111: refrigerant circulation port; 112: through hole; 113: storage space; 114: drive space.

Detailed ways

In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present disclosure. In the following technical description, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

The terms "first", "second" and the like in the description and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances so as to facilitate the embodiments of the disclosed embodiments described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

Unless stated otherwise, the term "plurality" means two or more.

In the embodiments of the present disclosure, the character "/" indicates that the preceding and following objects are an "or" relationship. For example, A/B means: A or B.

The term "and/or" is an associative relationship describing objects, indicating that there can be three relationships. For example, A and/or B means: A or B, or, A and B, these three relationships.

The term "correspondence" may refer to an association relationship or a binding relationship, and the correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

As shown in FIG. 1 to FIG. 3 , an embodiment of the present disclosure provides an air conditioner 1 , including a liquid storage tank 11 , a piston 12 , a solenoid valve 13 , a driving mechanism 14 and a refrigerant circulation system. One end of the liquid storage tank 11 is opened to form a refrigerant circulation port 111 , and the other end is opened with a through hole 112 . The piston 12 is arranged in the liquid storage tank 11 and divides the interior of the liquid storage tank 11 into a storage space 113 and a driving space 114 which are not connected to each other. One end of the electromagnetic valve 13 is connected to the refrigerant circulation port 111 , and the other end is connected to the pipeline of the refrigerant circulation system. One end of the driving mechanism 14 is located in the driving space 114 and is fixedly connected with the piston 12 , and the other end passes through the through hole 112 and is located outside the liquid storage tank 11 . The refrigerant circulation system includes a compressor 15 , a four-way valve 16 , an outdoor heat exchanger 17 , a throttling element 18 and an indoor heat exchanger 19 which are sequentially connected in series to form a circuit.

Optionally, the driving mechanism 14 is a mechanism capable of linear motion. For example, the driving mechanism 14 may be a linear motor, or may also be a combination of a rotary motor, a lead screw, a coupling and a nut.

Optionally, the air conditioner 1 further includes a temperature sensor 20 , a distance measuring sensor 21 and a processor 41 . The temperature sensor 20 is arranged on the indoor unit of the air conditioner 1 for detecting the indoor ambient temperature. The distance measuring sensor 21 is disposed in the driving space 114 of the liquid storage tank 11 at one end of the through hole 112 for detecting the distance between the piston 12 and the through hole 112 . The processor 41 is arranged in the air conditioner 1, and is electrically connected to the solenoid valve 13, the driving mechanism 14, the compressor 15, the four-way valve 16, the temperature sensor 20 and the distance sensor 21, and is configured to detect the indoor ambient temperature according to the temperature sensor 20. , determine the operating frequency of the compressor 15, control the on/off of the four-way valve 16 according to the user's instruction to change the operating mode of the air conditioner 1, and control the solenoid valve 13 according to the operating mode, operating frequency and the distance measured by the distance sensor 21 On/off, control the movement of the driving mechanism 14 to change the position of the piston 12, and when the position of the piston 12 is controlled and changed, the liquid storage tank 11 collects and stores the refrigerant in the refrigerant circulation system or releases the stored refrigerant to the refrigerant circulation system , to adjust the amount of refrigerant in the refrigerant circulation system.

The position of the piston 12 is the distance between the piston 12 and the refrigerant flow port 111 . When the liquid storage tank 11 is designed, the distance between the refrigerant circulation port 111 and the through hole 112 is determined. The processor 41 determines the position of the piston 12 by calculating the difference between the distance between the refrigerant circulation port 111 and the through hole 112 and the distance between the through hole 112 and the piston 12 measured by the ranging sensor 21 .

As shown in FIG. 4 , an embodiment of the present disclosure provides a method for adjusting air-conditioning refrigerant, including:

S210, the processor acquires the operating mode of the air conditioner.

S220, the processor determines the operating frequency of the compressor according to the operating mode.

S230, the processor controls the driving mechanism to move according to the operation mode and the operation frequency.

The current operating mode of the air conditioner is obtained by using the method for adjusting the refrigerant of the air conditioner provided by the embodiments of the present disclosure. Determine the operating frequency of the compressor according to the current operating mode. Since the amount of refrigerant required in the refrigerant circulation system is different under different operating modes and operating frequencies, the movement of the driving mechanism is controlled to change the position of the piston. When the refrigerant circulation system needs to supplement the refrigerant, the refrigerant in the liquid storage tank is discharged through the piston. When the refrigerant circulation system needs to release the refrigerant, the refrigerant in the liquid storage tank is absorbed by the piston. Since the distance that the driving mechanism drives the piston to move is determined, the amount of change of the refrigerant can be determined, so as to improve the accuracy of refrigerant regulation in the refrigerant circulation system.

As shown in FIG. 5 , an embodiment of the present disclosure provides another method for regulating air-conditioning refrigerant, including:

S210, the processor acquires the operating mode of the air conditioner.

S221. The temperature sensor detects the indoor ambient temperature.

S222. The processor determines the difference between the indoor ambient temperature and the target temperature set by the user.

S223, the processor determines the operating frequency of the compressor corresponding to the difference between the operation mode and the temperature according to the difference between the operation mode and the temperature.

By adopting the method for adjusting the refrigerant of the air conditioner provided by the embodiments of the present disclosure, the operating frequency of the compressor can be determined according to the difference between the operating mode of the air conditioner and the temperature, and the accuracy of determining the operating frequency is high. The movement of the driving mechanism is controlled according to the operating mode and the determined operating frequency, and the driving mechanism drives the piston to move accurately, so as to improve the accuracy of refrigerant regulation in the refrigerant circulation system.

The temperature difference in the embodiments of the present disclosure is the absolute value of the difference.

The corresponding relationship between the operating mode and temperature difference and the operating frequency of the compressor is shown in Table 1:

Table 1

It can be understood that, for different compressor models, the value of the operating frequency in Table 1 corresponding to the difference between the operating mode and the temperature may be other values, and the present invention is not limited to the values in Table 1.

As shown in FIG. 6 , an embodiment of the present disclosure provides another method for regulating air-conditioning refrigerant, including:

S210, the processor acquires the operating mode of the air conditioner.

S231. The processor determines the target amount of refrigerant in the refrigerant circulation system according to the operation mode and the operation frequency.

S232. The processor determines the difference between the total amount of refrigerant in the refrigerant circulation system and the target amount of refrigerant.

S233, the processor controls the driving mechanism to move according to the difference in the amount of refrigerant.

Using the method for adjusting the air-conditioning refrigerant provided by the embodiments of the present disclosure, the difference in the amount of refrigerant is the amount of refrigerant that needs to be stored in the liquid storage tank, and the movement of the driving mechanism is controlled according to the amount of refrigerant that needs to be stored in the liquid storage tank to improve the cycle of refrigerant The accuracy of refrigerant regulation in the system.

Optionally, the processor in step S231 determines the target refrigerant amount of the refrigerant circulation system according to the operation mode and the operation frequency, including: the processor determines the refrigerant circulation system corresponding to the operation mode and the operation frequency according to the operation mode and the operation frequency. Target refrigerant volume. Or, the processor determines the target amount of refrigerant in the refrigerant cycle system according to the operating mode, the operating frequency and the total amount of refrigerant in the refrigerant cycle system. In this way, the target amount of refrigerant can be determined through table look-up or calculation, and the determination accuracy is high, so as to improve the accuracy of refrigerant adjustment in the refrigerant circulation system.

The corresponding relationship between the operating mode and operating frequency and the target amount of refrigerant in the refrigerant circulation system is shown in Table 2:

Table 2

It can be understood that the target amount of refrigerant in the refrigerant circulation system corresponding to the operating mode and operating frequency in Table 2 may be other values, and the present invention is not limited to the values in Table 2.

Considering the different working frequencies of different types of compressors under different working conditions, Table 2 lists the target refrigerant volume of the refrigerant circulation system corresponding to the full frequency of the compressor when it is running.

Optionally, the processor determines the target amount of refrigerant in the refrigerant cycle system according to the operating mode, operating frequency, and total amount of refrigerant in the refrigerant cycle system, including: R _t =R _a -α×f _e -R _m . Among them, R _t is the target amount of refrigerant in the refrigerant circulation system, R _a is the total amount of refrigerant in the refrigerant circulation system, α is the operating frequency conversion coefficient, f _e is the operating frequency of the compressor, and R _m is the maximum capacity that the storage tank can store. Refrigerant volume. Conversion factors in formulas represent values only, without units. When the calculated target refrigerant amount R _t is greater than the total refrigerant amount R _a , set the target refrigerant amount R _t as the total refrigerant amount R _a . In this way, the target amount of refrigerant in the refrigerant cycle system can be accurately calculated, and the target amount of refrigerant can be determined with high accuracy, so as to improve the accuracy of refrigerant regulation in the refrigerant cycle system.

The operating frequency conversion coefficient α is the coefficient for converting the operating frequency of the compressor to adjust the amount of refrigerant, which affects the accuracy of refrigerant adjustment. The value range of α is [-4, -3], preferably, the value of α is -3.75, -3.5 or -3.25.

For the cooling and heating modes of the same air conditioner, the operating frequency conversion coefficient α can take different values to adapt to the amount of refrigerant required by the refrigerant circulation system of the air conditioner in different operating modes. For example, in cooling mode, the operating frequency conversion coefficient α is -3.25. In the heating mode, the operating frequency conversion coefficient α takes a value of -3.75.

As shown in FIG. 7 , an embodiment of the present disclosure provides another method for regulating air-conditioning refrigerant, including:

S210, the processor acquires the operating mode of the air conditioner.

S234, the processor determines the target position of the piston according to the difference in the amount of refrigerant.

S235, the processor determines the current position of the piston.

S236, the processor determines the difference between the target position and the current position.

S240, in the case that the position difference is not zero, the processor controls the driving mechanism to move according to the position difference.

By adopting the method for adjusting the air-conditioning refrigerant provided by the embodiments of the present disclosure, the difference in the position of the piston can be determined according to the difference in the amount of refrigerant, and the driving mechanism can move according to the difference in position, so as to improve the adjustment efficiency of the refrigerant in the refrigerant circulation system precision.

Optionally, the greater the difference in the amount of refrigerant, the greater the target position of the piston. In this way, when the difference in the amount of refrigerant is large, the amount of refrigerant collected by the piston into the liquid storage tank is large, and the amount of refrigerant in the refrigerant circulation system is small. The target position of the piston increases with the increase of the difference in the amount of refrigerant, so as to improve the accuracy of refrigerant regulation in the refrigerant circulation system.

Optionally, the processor in step S234 determines the target position of the piston according to the difference in the amount of refrigerant, including: h=(α×f _e +R _m )×β. Among them, h is the target position of the piston, α is the operating frequency conversion coefficient, f _e is the operating frequency of the compressor, R _m is the maximum amount of refrigerant that can be stored in the liquid storage tank, and β is the conversion coefficient of the refrigerant amount. Conversion factors in formulas represent values only, without units. In this way, the position of the piston can be linearly adjusted according to the operating frequency of the compressor, and the refrigerant amount can be adjusted with high accuracy, so as to improve the accuracy of refrigerant adjustment in the refrigerant circulation system.

The value range of the maximum amount of refrigerant R _m that can be stored in the liquid storage tank is [200, 400] g, preferably, the value of R _m is 250 g, 300 g or 350 g.

The refrigerant amount conversion coefficient β is a coefficient for converting the amount of refrigerant in the liquid storage tank to the position of the piston, and is related to the size of the liquid storage tank. The value range of β is [0.3, 0.7], preferably, the value of β is 0.4, 0.5 or 0.6.

Optionally, determining the current position of the piston by the processor in step S235 includes: measuring the distance between the through hole and the piston by the distance measuring sensor. The processor determines the difference between the distance between the refrigerant communication port and the through hole and the distance between the through hole and the piston. The processor determines the difference in distance as the current position of the piston. In this way, the current position of the piston can be accurately calculated to facilitate the control of the driving mechanism to move, so as to improve the accuracy of refrigerant regulation in the refrigerant circulation system.

As shown in FIG. 8 , an embodiment of the present disclosure provides another method for regulating air-conditioning refrigerant, including:

S210, the processor acquires the operating mode of the air conditioner.

S235, the processor determines the current position of the piston.

S237, the processor judges whether the position difference is zero. If yes, return to step S210, if not, execute step S241.

S241, the processor turns on the solenoid valve.

S242. The processor judges whether the position difference is greater than zero. If yes, execute step S243. If not, execute step S244.

S243, the processor controls the driving mechanism to move in a direction away from the refrigerant circulation port, and executes step S245.

S244, the processor controls the driving mechanism to move toward the refrigerant circulation port.

S245, the processor closes the solenoid valve, and returns to step S210.

Using the method for adjusting the refrigerant of the air conditioner provided by the embodiments of the present disclosure, according to the position difference, the driving mechanism is controlled to move in the expected direction to change the amount of refrigerant in the liquid storage tank, thereby adjusting the amount of refrigerant in the refrigerant circulation system. Open the solenoid valve to allow the refrigerant to circulate, and close the solenoid valve to prevent the collected refrigerant from flowing back into the refrigerant circulation system, so as to improve the accuracy of refrigerant regulation in the refrigerant circulation system.

Optionally, the processor in step S243 controls the driving mechanism to move in the direction away from the refrigerant circulation port, that is, the processor controls the driving mechanism to move in the direction away from the refrigerant circulation port according to the position difference. In step S244, the processor controls the driving mechanism to move toward the refrigerant flow port, and the processor controls the drive mechanism to move toward the refrigerant flow port according to the position difference. In this way, the moving distance of the driving mechanism is determined, and the adjustment amount of the refrigerant in the refrigerant circulation system is accurate, so as to improve the accuracy of refrigerant adjustment in the refrigerant circulation system.

Specifically, the size of the liquid storage tank can accommodate 300g of refrigerant (that is, R _m is 300g), and the distance between the refrigerant flow port and the through hole is 200mm. The driving mechanism can drive the piston to move a distance of 150mm from the refrigerant flow port, and the amount of refrigerant change is 2g for every 1mm of the driving mechanism moving. When the amount of refrigerant in the liquid storage tank is 0g, the total amount of refrigerant in the refrigerant circulation system is 700g. In cooling mode, the operating frequency conversion coefficient α is -3.25. In heating mode, the operating frequency conversion coefficient α is -3.75. The refrigerant quantity conversion coefficient β is 0.5. The current operating mode of the air conditioner is cooling mode, the operating frequency of the compressor is 65Hz, and the target amount of refrigerant in the refrigerant circulation system is 611.25g. The distance between the through hole and the piston measured by the ranging sensor is 147.5mm. The processor determines that the current position of the piston is at 52.5mm. According to the formula, the processor calculates that the target position of the piston is 44.375mm. The processor determines that the difference between the target position of the piston and the current position is -8.125mm. The processor controls the drive mechanism to move 8.125mm toward the refrigerant circulation port, the liquid storage tank releases 16.25g of refrigerant to the refrigerant circulation system, and the refrigerant in the liquid storage tank is 88.75g. The amount of refrigerant in the refrigerant circulation system is 611.25g, which is the same as the target amount of refrigerant, and the precise adjustment of the amount of refrigerant is realized. The method for controlling the amount of refrigerant in the heating mode is the same as that in the cooling mode, and will not be repeated here.

As shown in FIG. 9 , an embodiment of the present disclosure provides an apparatus for adjusting refrigerant of an air conditioner, including a processor (processor) 41 and a memory (memory) 42 . Optionally, the device may also include a communication interface (Communication Interface) 43 and a bus 44. Wherein, the processor 41 , the communication interface 43 , and the memory 42 can communicate with each other through the bus 44 . The communication interface 43 can be used for information transmission. The processor 41 can call the logic instructions in the memory 42 to execute the method for adjusting the air-conditioning refrigerant in the above-mentioned embodiment.

In addition, the above-mentioned logic instructions in the memory 42 may be implemented in the form of software functional units and when sold or used as an independent product, may be stored in a computer-readable storage medium.

As a storage medium, the memory 42 can be used to store software programs and computer executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 41 executes the program instructions/modules stored in the memory 42 to execute functional applications and data processing, that is, to implement the method for adjusting the air-conditioning refrigerant in the above-mentioned embodiments.

The memory 42 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and at least one application required by a function; the data storage area may store data created according to the use of the terminal device, and the like. In addition, the memory 42 may include a high-speed random access memory, and may also include a non-volatile memory.

An embodiment of the present disclosure provides an air conditioner, including the above-mentioned device for adjusting the refrigerant of the air conditioner.

An embodiment of the present disclosure provides a storage medium storing computer-executable instructions, and the computer-executable instructions are configured to execute the above-mentioned method for adjusting refrigerant in an air conditioner.

The above-mentioned storage medium may be a transitory computer-readable storage medium, or a non-transitory computer-readable storage medium.

The technical solutions of the embodiments of the present disclosure can be embodied in the form of software products, which are stored in a storage medium and include one or more instructions to enable a computer device (which may be a personal computer, a server, or a network equipment, etc.) to perform all or part of the steps of the method described in the embodiments of the present disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc. A medium that can store program code, or a transitory storage medium.

The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, procedural, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. Also, the terms used in the present application are used to describe the embodiments only and are not used to limit the claims. As used in the examples and description of the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well unless the context clearly indicates otherwise . Similarly, the term "and/or" as used in this application is meant to include any and all possible combinations of one or more of the associated listed ones. Additionally, when used in this application, the term "comprise" and its variants "comprises" and/or comprising (comprising) etc. refer to stated features, integers, steps, operations, elements, and/or The presence of a component does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groupings of these. Without further limitations, an element defined by the statement "comprising a ..." does not exclude the presence of additional same elements in the process, method or apparatus comprising said element. Herein, what each embodiment focuses on may be the difference from other embodiments, and the same and similar parts of the various embodiments may refer to each other. For the method, product, etc. disclosed in the embodiment, if it corresponds to the method part disclosed in the embodiment, then the relevant part can refer to the description of the method part.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed by hardware or software may depend on the specific application and design constraints of the technical solution. Said artisans may implement the described functions using different methods for each particular application, but such implementation should not be regarded as exceeding the scope of the disclosed embodiments. The skilled person can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units may only be a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined Or it can be integrated into another system, or some features can be ignored, or not implemented. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the disclosure. In this regard, each block in a flowchart or block diagram may represent a module, program segment, or part of code that includes one or more Executable instructions. In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than that disclosed in the description, and sometimes there is no specific agreement between different operations or steps. order. For example, two consecutive operations or steps may, in fact, be performed substantially concurrently, or they may sometimes be performed in the reverse order, depending upon the functionality involved. Each block in the block diagrams and/or flowcharts, and combinations of blocks in the block diagrams and/or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified function or action, or can be implemented by dedicated hardware implemented in combination with computer instructions.

Claims

A method for adjusting the refrigerant of an air conditioner, characterized in that the air conditioner includes: a liquid storage tank connected to the refrigerant circulation system of the air conditioner; a piston arranged in the liquid storage tank; a driving mechanism connected to the piston and controlled to move and change the piston Wherein, under the condition that the position of the piston is controlled and changed, the liquid storage tank can collect and store the refrigerant in the refrigerant circulation system or release the stored refrigerant to the refrigerant circulation system to adjust the amount of refrigerant in the refrigerant circulation system; The methods described include:

Obtain the operating mode of the air conditioner;

Determine the operating frequency of the compressor according to the operating mode;

According to the operating mode and operating frequency, the driving mechanism is controlled to move.
The method according to claim 1, wherein determining the operating frequency of the compressor according to the operating mode comprises:

Detect the indoor ambient temperature;

Determine the difference between the indoor ambient temperature and the target temperature set by the user;

According to the difference between the operation mode and the temperature, the operation frequency of the compressor corresponding to the difference between the operation mode and the temperature is determined.
The method according to claim 1, wherein controlling the movement of the driving mechanism according to the operating mode and the operating frequency comprises:

Determine the target amount of refrigerant in the refrigerant circulation system according to the operating mode and operating frequency;

Determine the difference between the total amount of refrigerant in the refrigerant circulation system and the target amount of refrigerant;

According to the difference in the amount of refrigerant, the drive mechanism is controlled to move.
The method according to claim 3, wherein controlling the movement of the driving mechanism according to the difference in the amount of refrigerant includes:

Determine the target position of the piston according to the difference in the amount of refrigerant;

determine the current position of the piston;

Determine the difference between the target position and the current position;

If the difference in position is not zero, the driving mechanism is controlled to move according to the difference in position.
The method according to claim 4, further comprising:

Open the solenoid valve before controlling the drive mechanism to move according to the difference in position;

After the driving mechanism is controlled to move according to the difference in position, the solenoid valve is closed.
The method according to claim 4 or 5, characterized in that one end of the liquid storage tank is opened to form a refrigerant flow port; the air conditioner also includes a solenoid valve connected between the refrigerant flow port and the refrigerant circulation system; The drive mechanism moves, including:

When the position difference is greater than zero, control the drive mechanism to move away from the direction of the refrigerant flow port;

When the difference in position is smaller than zero, the control drive mechanism moves toward the direction of the refrigerant flow port.
The method according to claim 6, characterized in that, according to the position difference, the driving mechanism is controlled to move in the direction away from the refrigerant flow port; according to the position difference, the drive mechanism is controlled to move toward the refrigerant flow port.
A device for regulating air-conditioning refrigerant, comprising a processor and a memory storing program instructions, wherein the processor is configured to execute any one of claims 1 to 7 when running the program instructions. The method for regulating the air-conditioning refrigerant.
An air conditioner, characterized in that it comprises:

A liquid storage tank (11), one end of which is opened to form a refrigerant circulation port (111), and the other end is provided with a through hole (112);

The piston (12) is arranged in the liquid storage tank (11), and divides the interior of the liquid storage tank (11) into a storage space (113) and a drive space (114) which are not connected to each other, and the storage space (113) communicates with the refrigerant The mouth (111) is connected, and the driving space (114) is connected with the through hole (112);

A solenoid valve (13), one end is connected with the refrigerant circulation port (111), and the other end is connected with the refrigerant circulation system;

The driving mechanism (14), one end is located in the driving space (114), is fixedly connected with the piston (12), and the other end passes through the through hole (112), and is located outside the liquid storage tank (11); and,

The device for regulating the air-conditioning refrigerant as claimed in claim 8.
A storage medium storing program instructions, wherein the program instructions execute the method for adjusting the refrigerant of an air conditioner according to any one of claims 1 to 7 when running.