WO2022160672A1

WO2022160672A1 - Method and apparatus for measuring amount of refrigerant in refrigeration system, and air conditioner

Info

Publication number: WO2022160672A1
Application number: PCT/CN2021/113212
Authority: WO
Inventors: 韩永超; 矫立涛; 马玉奇; 郭敏; 武永宾; 牛天新; 李江飞
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: 2021-01-26
Filing date: 2021-08-18
Publication date: 2022-08-04
Also published as: CN112880126A

Abstract

A method and apparatus for measuring the amount of refrigerant in a refrigeration system, and an air conditioner. The method is applied to a refrigeration device, and the refrigeration device is provided with a pressure sensor. The method comprises: when stopping adding a refrigerant of a refrigeration system, controlling a compressor of the refrigeration device to operate at a preset frequency; after the compressor runs for a preset duration, acquiring a first pressure value collected by the pressure sensor; and according to the correspondence between pressure values and refrigerant, determining the amount of refrigerant corresponding to the first pressure value as the current remaining amount of refrigerant in the refrigeration system. By means of the described solution, the amount of refrigerant in a refrigeration system can be determined according to a collected pressure value in the refrigeration system after a maintenance worker adds the refrigerant, thus providing a user with a more accurate means for measuring the amount of refrigerant so as to determine information about the amount of refrigerant remaining in the refrigeration system and thereby determine whether the amount of refrigerant added by the maintenance worker is suitable, thus meeting the needs of users.

Description

Method, device and air conditioner for detecting refrigerant quantity in refrigeration system

This application is based on the Chinese patent application with the application number of 202110105521.3 and the filing date of January 26, 2021, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is incorporated herein by reference.

technical field

The present application relates to the technical field of smart home appliances, for example, to a method and device for detecting the amount of refrigerant in a refrigeration system, and an air conditioner.

Background technique

Refrigerant is a working fluid used to transfer heat energy and produce freezing effect in air-conditioning refrigeration system. In the research and development process of air conditioning system, the amount of refrigerant plays a crucial role in whether the system can exert the maximum energy efficiency. During the use of the air conditioner, as the refrigerant volatilizes, the amount of refrigerant in the pipeline gradually decreases. If the amount of refrigerant in the pipeline is insufficient, the stable operation of the refrigeration system cannot be maintained, and maintenance personnel need to be contacted to add refrigerant. In the prior art, maintenance personnel usually determine the amount of refrigerant added by means of a pressure gauge or by acquiring system parameters, so as to add refrigerant to the system. However, this method of adding cannot accurately determine the remaining amount of refrigerant in the pipeline of the refrigeration system after the refrigerant is added. Therefore, how to accurately determine the residual refrigerant flow in the pipeline of the refrigeration system after the refrigerant is added has become an urgent problem to be solved.

SUMMARY OF THE INVENTION

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

Embodiments of the present disclosure provide a method, a device, and an air conditioner for detecting the amount of refrigerant in a refrigeration system, so as to provide a more accurate method for detecting the amount of refrigerant in a refrigeration system.

In some embodiments, the method includes: applying to refrigeration equipment, the refrigeration equipment is configured with a pressure sensor, and when the refrigerant in the refrigeration system stops adding refrigerant, controlling the compressor of the refrigeration equipment to operate at a preset frequency; After the time period, the first pressure value collected by the pressure sensor is obtained; according to the corresponding relationship between the pressure value and the refrigerant, the amount of refrigerant corresponding to the first pressure value is determined as the current remaining amount of refrigerant in the refrigeration system.

In some embodiments, the method includes: acquiring an outdoor ambient temperature and an indoor ambient temperature, and determining a difference between the outdoor ambient temperature and the indoor ambient temperature, where the difference between the outdoor ambient temperature and the indoor ambient temperature is consistent with a preset difference When the pressure sensor is , obtain the second pressure value collected by the pressure sensor; according to the corresponding relationship between the pressure value and the refrigerant, determine the amount of refrigerant corresponding to the first pressure value as the current remaining refrigerant amount of the refrigeration system; determine the first pressure value and the second The pressure average value of the pressure value; according to the corresponding relationship between the pressure value and the refrigerant, the refrigerant volume corresponding to the pressure average value is determined as the current remaining refrigerant volume of the refrigeration system.

In some embodiments, the method includes: acquiring the refrigerant storage capacity of the refrigerant system, and determining the ratio of the current remaining refrigerant amount to the refrigerant storage capacity; refrigerant level.

In some embodiments, when the ratio is not higher than the preset ratio, prompt information indicating the refrigerant level is pushed to the user.

In some embodiments, after controlling the compressor of the refrigeration equipment to operate at a preset frequency, the method further includes: adjusting the opening degree of the air deflector of the refrigeration equipment to a first preset opening degree.

In some embodiments, after controlling the compressor of the refrigeration equipment to operate at a preset frequency, the method further includes: adjusting the opening degree of the throttle valve of the refrigeration equipment to a second preset opening degree.

In some embodiments, after controlling the compressor of the refrigeration equipment to operate at the preset frequency, the method further includes: adjusting the rotational speed of the fan of the refrigeration equipment to the preset rotational speed.

In some embodiments, the apparatus includes: applied to a refrigeration device, the refrigeration device is configured with a pressure sensor, and a control module configured to control the compressor of the refrigeration device to operate at a preset frequency when the refrigerant in the refrigeration system stops adding; The obtaining module is configured to obtain the first pressure value collected by the pressure sensor after the refrigeration equipment runs for a preset duration; the determining module is configured to determine the first pressure value corresponding to the first pressure value according to the corresponding relationship between the pressure value and the refrigerant The current remaining amount of refrigerant.

In some embodiments, the air conditioner includes: a processor and a memory storing program instructions, the processor is configured to execute the aforementioned method for detecting the amount of refrigerant in a refrigeration system when executing the program instructions.

The method, device and air conditioner for detecting the amount of refrigerant in a refrigeration system provided by the embodiments of the present disclosure can achieve the following technical effects: when the addition of refrigerant in the refrigeration system is stopped, it is determined that the addition of refrigerant in the refrigeration system has been completed. And after the refrigerant is added, the compressor of the refrigeration equipment is controlled to run at a preset frequency, and a pressure sensor is set on the refrigeration equipment, and after the refrigeration equipment runs for a preset period of time, the first pressure value of the refrigeration system is collected by the pressure sensor, And according to the corresponding relationship between the pressure value and the target refrigerant quantity, the current remaining refrigerant quantity of the refrigeration system is determined. With this solution, after the maintenance personnel add refrigerant, the amount of refrigerant in the refrigeration system can be determined according to the collected pressure value of the refrigeration system, providing users with a more accurate refrigerant amount detection method, so that users can determine the remaining amount of refrigerant in the refrigeration system. Refrigerant quantity information, so as to judge whether the refrigerant quantity added by maintenance personnel is appropriate to meet the needs of users.

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 accompanying drawings, which are not intended to limit the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, The drawings do not constitute a limitation of scale, and in which:

1 is a schematic diagram of a method for detecting the amount of refrigerant in a refrigeration system provided by an embodiment of the present disclosure;

Fig. 2 is a refrigerant level comparison table provided by the embodiment of the present disclosure;

3 is a refrigerant state table provided by an embodiment of the present disclosure;

4 is a schematic diagram of a device for detecting the amount of refrigerant in a refrigeration system provided by an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of an air conditioning module provided by an embodiment of the present disclosure.

Detailed ways

In order to understand the features and technical contents 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 with reference to the accompanying drawings, which are for reference only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, numerous details are provided 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-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for the purposes of implementing the embodiments of the disclosure described herein. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion.

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

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

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

In practical applications, the refrigeration equipment can be an intelligent air conditioner. By setting a pressure sensor on the air return pipe of the air conditioner, when the refrigerant in the refrigeration system stops adding, the compressor of the air conditioner can be controlled to run at a preset frequency, and when the compressor runs After the preset time period, the refrigeration system of the air conditioner is in a stable state, thereby obtaining the first pressure value collected by the pressure sensor, and determining the amount of refrigerant as the current remaining amount of refrigerant according to the amount of refrigerant corresponding to the first pressure value. Determine the refrigerant level according to the current remaining refrigerant amount. Further, the amount of refrigerant and the level of refrigerant are pushed to the user, providing users with a more accurate method of detecting the amount of refrigerant, so that the user can determine the amount of refrigerant remaining in the refrigeration system, so as to judge whether the amount of refrigerant added by the maintenance personnel is appropriate. meet the needs of users.

FIG. 1 is a schematic diagram of a method for detecting the amount of refrigerant in a refrigeration system provided by an embodiment of the present disclosure. With reference to FIG. 1 , an embodiment of the present disclosure provides a method for detecting the amount of refrigerant in a refrigeration system, which is applied to refrigeration equipment. , the refrigeration equipment is equipped with pressure sensors, including:

S11, when the refrigerant of the refrigeration system stops adding, control the compressor of the refrigeration equipment to run at a preset frequency.

S12, after the compressor runs for a preset duration, obtain a first pressure value collected by a pressure sensor.

S13, according to the corresponding relationship between the pressure value and the refrigerant, determine the amount of refrigerant corresponding to the first pressure value as the current remaining amount of refrigerant in the refrigeration system.

A method for detecting the amount of refrigerant in a refrigeration system provided by an embodiment of the present disclosure is applied to a refrigeration device, and the refrigeration device may be a device with a refrigeration function, a smart home device, etc., or any combination thereof. In some embodiments, smart home devices may include, for example, air conditioners, refrigerators, etc., or any combination thereof.

In step 11, the compressor of the refrigeration equipment may be controlled to run at a preset frequency when the addition of the refrigerant of the refrigeration system is stopped.

In this solution, sensors can be arranged on the pipelines of the refrigeration system. In one example, since the return pipe is thicker than other pipes in the refrigeration system, a pressure sensor may be added to the return pipe to make better use of the space at the return pipe of the refrigeration system. In addition, adding a pressure sensor here can better reflect the pipeline pressure when the refrigeration system is stable, so as to further realize the correspondence between the pipeline pressure and the amount of refrigerant.

In this solution, a refrigerant quantity self-check key can be installed on the remote control device matched with the refrigeration equipment, and when the user receives the key value information received by the refrigeration equipment, it is determined whether the refrigerant in the refrigeration system stops adding. The user's voice information can also be acquired, and whether the refrigerant in the refrigeration system has stopped adding is determined through the user's voice information. For example, if the acquired voice information of the user indicates that the addition of refrigerant is completed, it is determined that the addition of refrigerant in the refrigeration system has stopped. In an optimized solution, the user can also manually input the information of the end of adding the refrigerant to the client associated with the refrigeration equipment, and when the client receives the information, it is determined that the addition of the refrigerant in the refrigeration system has ended. Therefore, after the refrigeration equipment determines that the addition of the refrigerant in the refrigeration system is completed, the compressor of the refrigeration equipment is controlled to run at a preset frequency. At this time, the preset frequency can be the lowest frequency that can maintain the stable operation of the system, or can be set in advance according to the needs of the user. This solution can provide stable and energy-saving system operating conditions for the pressure detection process, further improve the accuracy of the acquired data, and provide a stable operating environment foundation for the acquisition of pressure data.

In step 12, after the compressor runs for a preset period of time, the first pressure value collected by the pressure sensor is acquired.

In this solution, a pressure sensor can be set on the pipeline of the air return pipe of the refrigeration equipment, and after the compressor runs for a preset period of time and the refrigeration equipment is in a stable operation state, the first pressure value collected by the pressure sensor is obtained. In an optimized solution, multiple pressure sensors can also be set on the refrigeration system pipeline of the refrigeration equipment, and the multiple pressure sensors are respectively set on different pipelines of the refrigeration system, such as the pipeline on the refrigerant inflow side of the evaporator, On the pipeline on the refrigerant outflow side of the evaporator, on the pipeline on the refrigerant inflow side of the condenser, on the pipeline on the refrigerant outflow side of the condenser, on the pipeline on the refrigerant outflow side of the compressor, and on the pipeline on the refrigerant inflow side of the compressor. Therefore, according to the pressure values obtained by multiple pressure sensors, the current remaining amount of refrigerant in the refrigeration system can be further determined. Specifically, the amount of refrigerant corresponding to the average value can be determined as the current remaining amount of refrigerant according to the average pressure obtained by multiple pressure sensors. . In this solution, the pressure value can be obtained through multiple pressure sensors, and the current remaining amount of refrigerant in the pipeline can be determined according to the average pressure, so as to determine whether the amount of refrigerant added by the maintenance personnel is appropriate to meet the needs of users.

In step 13, the amount of refrigerant corresponding to the first pressure value may be determined as the current remaining amount of refrigerant in the refrigeration system according to the corresponding relationship between the pressure value and the amount of refrigerant.

In this solution, different pressure values correspond to different amounts of refrigerant, and a table of correspondence between pressure values and refrigerant amounts can be pre-stored in advance, and the remaining refrigerant amounts corresponding to the different pressure values can be pre-stored in the table. In the technical solutions provided by the embodiments of the present disclosure, it can be determined that the addition of the refrigerant in the refrigeration system has been completed when the addition of the refrigerant in the refrigeration system is stopped. And after the refrigerant is added, the compressor of the refrigeration equipment is controlled to run at a preset frequency, and a pressure sensor is set on the refrigeration equipment, and after the refrigeration equipment runs for a preset period of time, the first pressure value of the refrigeration system is collected by the pressure sensor, And according to the corresponding relationship between the pressure value and the target refrigerant quantity, the current remaining refrigerant quantity of the refrigeration system is determined. With this solution, after the maintenance personnel add refrigerant, the amount of refrigerant in the refrigeration system can be determined according to the collected pressure value of the refrigeration system, providing users with a more accurate refrigerant amount detection method, so that users can determine the remaining amount of refrigerant in the refrigeration system. Refrigerant quantity information, so as to judge whether the refrigerant quantity added by maintenance personnel is appropriate to meet the needs of users.

Optionally, after the compressor runs for a preset period of time, the outdoor ambient temperature and the indoor ambient temperature are obtained, and the difference between the outdoor ambient temperature and the indoor ambient temperature is determined, and the difference between the outdoor ambient temperature and the indoor ambient temperature and the preset difference When the values match, obtain the second pressure value collected by the pressure sensor; determine the pressure average value of the first pressure value and the second pressure value; according to the corresponding relationship between the pressure value and the refrigerant, determine the amount of refrigerant corresponding to the average pressure value as The current amount of refrigerant remaining in the refrigeration system.

In this solution, the preset difference value can be determined according to the mode of the refrigeration equipment. For example, when the refrigeration equipment is an air conditioner and the air conditioner is in a cooling state, the preset temperature difference can be set as 6 degrees. At the same time, the preset temperature difference can be set in advance according to the needs of users. In the technical solutions provided by the embodiments of the present disclosure, an ambient temperature collection device may be provided. Specifically, the ambient temperature difference between the outdoor temperature and the indoor temperature may be determined by collecting specific parameter values of the outdoor ambient temperature and the indoor ambient temperature. And when the difference is consistent with the preset difference, the second temperature collected by the pressure sensor is acquired. The coincidence here means that the difference between the outdoor temperature and the indoor temperature is equal, and the fluctuation value can also be set. If the difference between the outdoor ambient temperature and the indoor ambient temperature can fluctuate up and down at the preset difference, it can be determined The difference in room ambient temperature matches the preset difference. For example, if the outdoor ambient temperature is 28 degrees and the indoor ambient temperature is 23 degrees, the difference between the ambient temperatures at this time is 5 degrees. If the preset temperature difference is 6 degrees, and the preset fluctuation value is 2 degrees, it is determined that the difference between the outdoor temperature and the indoor temperature at this time fluctuates up and down at the preset difference, and the outdoor ambient temperature and the indoor ambient temperature are determined. The difference matches the preset difference. With this solution, when the difference between the outdoor ambient temperature and the indoor ambient temperature is consistent with the preset difference, the second pressure value collected by the pressure sensor can be obtained, and according to the average value of the second pressure value and the first pressure value, the Determination of the current remaining amount of refrigerant. With this solution, the current remaining refrigerant volume in the refrigeration equipment pipeline can be obtained more accurately to meet the needs of users.

Optionally, in order to determine the refrigerant level of the remaining refrigerant amount of the refrigeration system, in this solution, the refrigerant storage capacity of the refrigerant system is obtained, and the ratio of the current remaining refrigerant amount to the refrigerant storage capacity is determined; The ratio is determined to determine the refrigerant level in the refrigeration system represented by the ratio.

FIG. 2 is a comparison table of refrigerant grades provided by an embodiment of the present disclosure. Specifically, as shown in FIG. 2 , in the comparison table, the higher the proportion of the current remaining refrigerant quantity, the higher the refrigerant grade. For example, in this solution, if the refrigerant storage capacity is 1000g, the level represented by the ratio can be determined according to the ratio of the current remaining refrigerant volume to the refrigerant storage capacity. In an optimized solution, the refrigerant level of the remaining refrigerant quantity of the refrigeration system can also be determined according to the ratio of the current remaining refrigerant quantity to the actual total refrigerant quantity. Among them, the actual total refrigerant volume is the sum of the nominal refrigerant volume and the set refrigerant volume. The nominal refrigerant volume refers to the minimum refrigerant volume for stable operation of the refrigeration system. The set refrigerant volume can be set in advance according to user needs. With this solution, the corresponding refrigerant level can be determined according to the proportion of the remaining refrigerant in the refrigeration equipment pipeline. So that the user can obtain the current refrigerant status of the refrigeration equipment.

Optionally, in order for the user to determine the refrigerant state of the refrigeration equipment, when the ratio is not higher than the preset ratio, prompt information indicating the refrigerant level is pushed to the user.

In this solution, a display device can be configured in the refrigeration equipment, and the determined refrigeration level and the proportion of the remaining refrigerant can be displayed on the display equipment. In an optimized solution, the refrigerant status table shown in Figure 3 can also be pushed to relevant users. Specifically, the refrigerant status table can be displayed on the display device of the refrigeration equipment, and can also be pushed to the mobile terminal associated with the refrigeration equipment. Here, the display device may be a display panel, and the mobile terminal may be a mobile phone associated with the user. With this solution, the user can obtain the refrigerant state of the refrigeration equipment in real time, so that the user can adjust the amount of refrigerant in the pipeline according to the refrigerant state.

Optionally, in order to ensure that the refrigeration system of the refrigeration equipment not only ensures the normal operation of the system, but also ensures that a certain pressure is formed at the pressure sensor, after the compressor of the refrigeration equipment is controlled to operate at a preset frequency, the air guide of the refrigeration equipment can be The plate opening is adjusted to the first preset opening.

In this solution, the first preset opening degree is the minimum opening degree that guides the wind panel to maintain the stable operation of the system. Specifically, the first opening degree value can be set according to different temperature requirements of users. While the refrigeration equipment is running stably, it is ensured that the pressure sensor obtains an accurate first pressure value, so as to determine the current remaining amount of refrigerant according to the first pressure value.

Optionally, in order to ensure that the refrigeration system of the refrigeration equipment not only ensures the normal operation of the system, but also ensures that a certain pressure is formed at the pressure sensor position, after the compressor of the refrigeration equipment is controlled to operate at a preset frequency, the throttle valve of the refrigeration equipment is set. The opening degree is adjusted to the second preset opening degree.

In this solution, the second preset opening degree refers to the minimum opening degree of the throttle valve to maintain the stable operation of the system. Specifically, the first opening degree value can be set according to the temperature difference between the set temperature and the indoor ambient temperature. With this solution, while the refrigeration equipment is running stably, it is ensured that the pressure sensor obtains an accurate first pressure value, so as to determine the current remaining amount of refrigerant according to the first pressure value.

Optionally, in order to ensure that the refrigeration system of the refrigeration equipment not only ensures the normal operation of the system, but also ensures that a certain pressure is formed at the pressure sensor, after the compressor of the refrigeration equipment is controlled to operate at a preset frequency, the speed of the fan of the refrigeration equipment is adjusted. to the preset speed.

In this scheme, the preset wind speed refers to the minimum wind speed at which the indoor fan maintains the stable operation of the system. Specifically, the preset wind speed can be set according to the temperature of the evaporator coil. In this scheme, the refrigeration equipment can be operated in a stable manner. At the same time, the freezing of the evaporator is prevented, and it is ensured that the pressure sensor obtains an accurate first pressure value, so as to determine the current remaining refrigerant amount according to the first pressure value.

With reference to FIG. 4 , an embodiment of the present disclosure provides a refrigerant quantity detection device for a refrigeration system, including a control module 41 , an acquisition module 42 and a determination module 43 . The control module 41 is configured to control the compressor of the refrigeration equipment to run at a preset frequency when the refrigerant of the refrigeration system stops adding; the acquisition module 42 is configured to acquire the first pressure collected by the pressure sensor after the compressor runs for a preset period of time The determination module 43 is configured to determine the amount of refrigerant corresponding to the first pressure value as the current remaining amount of refrigerant in the refrigeration system according to the corresponding relationship between the pressure value and the refrigerant.

By using the detection device for the amount of refrigerant in the refrigeration system provided by the embodiment of the present disclosure, when the addition of the refrigerant in the refrigeration system stops, it is determined that the addition of the refrigerant in the refrigeration system has been completed. And after the refrigerant is added, the compressor of the refrigeration equipment is controlled to run at a preset frequency, and a pressure sensor is set on the refrigeration equipment, and after the refrigeration equipment runs for a preset period of time, the first pressure value of the refrigeration system is collected by the pressure sensor, And according to the corresponding relationship between the pressure value and the target refrigerant quantity, the current remaining refrigerant quantity of the refrigeration system is determined. With this solution, after the maintenance personnel add refrigerant, the amount of refrigerant in the refrigeration system can be determined according to the collected pressure value of the refrigeration system, providing users with a more accurate refrigerant amount detection method, so that users can know the remaining amount of refrigerant in the refrigeration system. Refrigerant quantity information, so as to judge whether the refrigerant quantity added by maintenance personnel is appropriate to meet the needs of users.

With reference to FIG. 5 , an embodiment of the present disclosure provides an air conditioner, including a processor (processor) 100 and a memory (memory) 101 . Optionally, the apparatus may further include a communication interface (Communication Interface) 102 and a bus 103 . The processor 100 , the communication interface 102 , and the memory 101 can communicate with each other through the bus 103 . Communication interface 102 may be used for information transfer. The processor 100 may invoke the logic instructions in the memory 101 to execute the method for detecting the amount of refrigerant in the refrigeration system of the above-mentioned embodiments.

In addition, the above-mentioned logic instructions in the memory 101 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

As a computer-readable storage medium, the memory 101 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 100 executes the function application and data processing by running the program instructions/modules stored in the memory 101, that is, the method for detecting the amount of refrigerant used in the refrigeration system in the above-mentioned embodiment is implemented.

The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, the memory 101 may include high-speed random access memory, and may also include non-volatile memory.

An embodiment of the present disclosure provides an air conditioner, including the above-mentioned device for detecting the amount of refrigerant in a refrigeration system.

Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions, where the computer-executable instructions are configured to execute the above method for detecting the amount of refrigerant in a refrigeration system.

An embodiment of the present disclosure provides a computer program product, where the computer program product includes a computer program stored on a computer-readable storage medium, and the computer program includes program instructions that, when executed by a computer, cause all The computer executes the above-mentioned method for detecting the amount of refrigerant in a refrigeration system.

The above-mentioned computer-readable storage medium may be a transient computer-readable storage medium, and may also be a non-transitory computer-readable storage medium.

The technical solutions of the embodiments of the present disclosure may be embodied in the form of software products, and the computer software products 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 execute all or part of the steps of the methods described in the embodiments of the present disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: U disk, removable hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc. A medium that can store program codes, and can also be a transient storage medium.

The foregoing description and drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, process, and other changes. The examples represent only possible variations. Unless expressly required, individual components and functions are optional 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 this application are used to describe the embodiments only and not to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a" (a), "an" (an) and "the" (the) are intended to include the plural forms as well, unless the context clearly dictates 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 listings. Additionally, when used in this application, the term "comprise" and its variations "comprises" and/or including and/or the like 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 limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, or device that includes the element. Herein, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, reference may be made to the description of the method section for relevant parts.

Those skilled in the art can realize that the units and algorithm steps of each example 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 in hardware or software may depend on the specific application and design constraints of the technical solution. Skilled artisans may use different methods for implementing the described functionality for each particular application, but such implementations should not be considered beyond the scope of the disclosed embodiments. The skilled person can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units can refer to the corresponding processes in the foregoing method embodiments, and details are not repeated here.

In the embodiments disclosed herein, the disclosed methods and products (including but not limited to apparatuses, devices, etc.) may be implemented in other ways. For example, the apparatus 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. Either it can be integrated into another system, or some features can be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. This embodiment may be implemented by selecting some or all of the units according to actual needs. In addition, each functional unit in the embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, 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 present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more functions for implementing the specified logical function(s) executable instructions. In some alternative implementations, the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or the blocks 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, operations or steps corresponding to different blocks may also occur in different sequences than those disclosed in the description, and sometimes there is no specific relationship 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 of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented in special purpose hardware-based systems that perform the specified functions or actions, or special purpose hardware implemented in combination with computer instructions.

Claims

A method for detecting the amount of refrigerant in a refrigeration system, characterized in that it is applied to refrigeration equipment, wherein the refrigeration equipment is configured with a pressure sensor, and the method includes:

When the refrigerant of the refrigeration system stops adding, controlling the compressor of the refrigeration equipment to operate at a preset frequency;

After the compressor runs for a preset period of time, obtain the first pressure value collected by the pressure sensor;

According to the corresponding relationship between the pressure value and the refrigerant, the amount of refrigerant corresponding to the first pressure value is determined as the current remaining amount of refrigerant in the refrigeration system.
The method according to claim 1, wherein after the compressor is operated for a preset time period, the method further comprises:

Acquire the outdoor ambient temperature and the indoor ambient temperature, and determine the difference between the outdoor ambient temperature and the indoor ambient temperature, and obtain the pressure sensor when the difference between the outdoor ambient temperature and the indoor ambient temperature is consistent with a preset difference the collected second pressure value;

Determining the amount of refrigerant corresponding to the first pressure value as the current remaining amount of refrigerant in the refrigeration system according to the corresponding relationship between the pressure value and the refrigerant, including:

determining a pressure average value of the first pressure value and the second pressure value;

According to the corresponding relationship between the pressure value and the refrigerant, the amount of refrigerant corresponding to the average pressure value is determined as the current remaining amount of refrigerant in the refrigeration system.
The method according to claim 1, wherein the method further comprises:

Obtain the refrigerant storage capacity of the refrigerant system, and determine the ratio of the current remaining refrigerant volume to the refrigerant storage capacity;

According to the ratio of the current remaining refrigerant amount to the refrigerant storage capacity, the refrigerant level in the refrigeration system represented by the ratio is determined.
The method according to claim 3, wherein the method further comprises:

When the ratio is not higher than the preset ratio, prompt information indicating the refrigerant level is pushed to the user.
The method according to claim 1, wherein after controlling the compressor of the refrigeration equipment to operate at a preset frequency, the method further comprises:

Adjust the opening degree of the air deflector of the refrigeration equipment to the first preset opening degree.
The method according to claim 1, wherein after controlling the compressor of the refrigeration equipment to operate at a preset frequency, the method further comprises:

The opening degree of the throttle valve of the refrigeration equipment is adjusted to the second preset opening degree.
The method according to claim 1, wherein after controlling the compressor of the refrigeration equipment to operate at a preset frequency, the method further comprises:

Adjust the fan speed of the refrigeration equipment to a preset speed.
A device for detecting the amount of refrigerant in a refrigeration system, applied to refrigeration equipment, wherein the refrigeration equipment is equipped with a pressure sensor, characterized in that it includes:

a control module, configured to control the compressor of the refrigeration equipment to operate at a preset frequency when the refrigerant of the refrigeration system stops adding;

an acquisition module, configured to acquire the first pressure value collected by the pressure sensor after the compressor runs for a preset duration;

The determining module is configured to determine the amount of refrigerant corresponding to the first pressure value as the current remaining amount of refrigerant in the refrigeration system according to the corresponding relationship between the pressure value and the refrigerant.
An air conditioner, comprising a processor and a memory storing program instructions, wherein the processor is configured to execute the refrigeration system according to any one of claims 1 to 7 when executing the program instructions. The method of detecting the amount of refrigerant in the system.
An air conditioner, characterized by comprising the device for detecting the amount of refrigerant in a refrigeration system as claimed in claim 8 or 9.