WO2023103355A1

WO2023103355A1 - Method and apparatus for determining refrigerant amount, and air conditioner and storage medium

Info

Publication number: WO2023103355A1
Application number: PCT/CN2022/102289
Authority: WO
Inventors: 王亚东; 杨坤
Original assignee: 青岛海尔空调电子有限公司; 青岛海尔空调器有限总公司; 海尔智家股份有限公司
Priority date: 2021-12-06
Filing date: 2022-06-29
Publication date: 2023-06-15
Also published as: CN114353260B; CN114353260A

Abstract

A method for determining a refrigerant amount. The method comprises: obtaining the actual noise value of an outdoor unit of an air conditioner; comparing the actual noise value with a preset standard noise value; and when the actual noise value is less than the standard noise value, determining that the refrigerant amount is insufficient. After the actual noise value of the outdoor unit of the air conditioner is obtained, whether there is insufficient refrigerant is determined according to a magnitude relationship between the actual noise value and the standard noise value. During an actual application process, whether the refrigerant amount is less than a standard refrigerant amount can be determined by measuring only one parameter, i.e. the actual noise value of an air conditioner, such that the process of determining the refrigerant amount in the air conditioner is simplified. An apparatus for determining a refrigerant amount, and an air conditioner and a storage medium.

Description

Method, device, air conditioner and storage medium for judging the amount of refrigerant

This application is based on a Chinese patent application with application number 202111482057.6 and a filing date of December 6, 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 judging the amount of refrigerant, an air conditioner and a storage medium.

Background technique

Due to the limitations of the service life and manufacturing process of the air conditioner, the refrigerant in the air conditioner will leak to varying degrees after a long period of use. Leakage of refrigerant not only affects the cooling efficiency of the air conditioner, but when the amount of refrigerant leakage increases to a certain extent, the refrigerant accumulated in and around the air conditioner may cause fire or even explosion. It can be seen that it is very important to detect the amount of refrigerant in the air conditioner.

There is a refrigerant state self-inspection method, which includes: obtaining the frequency of the compressor when the air conditioner is running; when the frequency of the compressor reaches a stable operating range, collecting the relevant parameters of the fluorine-deficient state self-inspection according to the preset time interval t and comparing it with the compressor The frequency is recorded once; according to the current and last recorded compressor winding temperature TR, calculate the growth rate KR of the current compressor winding temperature; according to the current and last recorded discharge temperature TP, calculate the current growth rate KP of the discharge temperature ; Judgment only when both KR and KP are positive: if KR-KP is less than the first threshold, it is judged that the system is not short of fluorine; if KR-KP is between the first threshold and the second threshold, it is judged that the system is weakly deficient in fluorine State, record the time when the system is in a weak fluorine deficiency state; if KR-KP is greater than the second threshold, it is judged that the system is in a severe fluorine deficiency state, and an alarm is issued to indicate a severe fluorine deficiency.

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

Although related technologies can determine whether the amount of refrigerant in an air conditioner is missing, the determination process involves many parameters, which makes the process too cumbersome.

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 judging the amount of refrigerant, an air conditioner and a storage medium, so as to simplify the process of judging the amount of refrigerant in the air conditioner.

In some embodiments, the method includes: detecting the actual noise value of the outdoor unit of the air conditioner; comparing the actual noise value with a preset standard noise value; when the actual noise value is lower than the standard noise value, judging For lack of refrigerant.

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 judging the amount of refrigerant when executing the program instructions.

In some embodiments, the air conditioner includes: the above-mentioned device for judging the amount of refrigerant.

In some embodiments, the storage medium stores program instructions, and when the program instructions are run, the above-mentioned method for judging the amount of refrigerant is executed.

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

After obtaining the actual noise value of the outdoor unit of the air conditioner, it is judged whether the refrigerant is missing according to the magnitude relationship between the actual noise value and the standard noise value. In this way, in the actual application process, it is only necessary to detect the actual noise value of the air conditioner to determine whether the amount of refrigerant is lower than the standard amount of refrigerant, which greatly simplifies the process of judging the amount of refrigerant in the air conditioner.

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 diagram of a system environment for judging the amount of refrigerant provided by an embodiment of the present disclosure;

Fig. 2 is a schematic diagram of a method for judging the amount of refrigerant provided by an embodiment of the present disclosure;

Fig. 3 is a schematic diagram of another method for judging the amount of refrigerant provided by an embodiment of the present disclosure;

Fig. 4 is a schematic diagram of another method for judging the amount of refrigerant provided by an embodiment of the present disclosure;

Fig. 5 is a schematic diagram of another method for judging the amount of refrigerant provided by an embodiment of the present disclosure;

Fig. 6 is a schematic diagram of a device for judging the amount of refrigerant provided by an embodiment of the present disclosure.

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 "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.

In the embodiments of the present disclosure, smart home appliances refer to home appliances formed by introducing microprocessors, sensor technologies, and network communication technologies into home appliances. They have the characteristics of intelligent control, intelligent perception, and intelligent applications. Relying on the application and processing of modern technologies such as the Internet of Things, the Internet, and electronic chips, for example, smart home appliances can realize remote control and management of smart home appliances by users by connecting electronic devices. The air conditioner in the embodiments of the present disclosure belongs to the above-mentioned smart home appliances.

In the disclosed embodiments, a terminal device refers to an electronic device with a wireless connection function. The terminal device can communicate with the above-mentioned smart home appliance by connecting to the Internet, or directly communicate with the above-mentioned smart home appliance through Bluetooth, wifi, etc. communication connection. In some embodiments, the terminal device is, for example, a mobile device, a computer, or a vehicle-mounted device built into a hover vehicle, or any combination thereof. The mobile device may include, for example, a mobile phone, a smart home device, a wearable device, a smart mobile device, a virtual reality device, etc., or any combination thereof, wherein the wearable device includes, for example, a smart watch, a smart bracelet, a pedometer, and the like.

As shown in FIG. 1 , the system for judging the amount of refrigerant provided by the embodiment of the present disclosure includes an air conditioner 11 and a noise detection device 12 . The noise detection device 12 is configured to detect the actual noise value of the outdoor unit of the air conditioner, and send the actual noise value to the air conditioner.

Fig. 2 is a schematic diagram of a method for judging the amount of refrigerant provided by an embodiment of the present disclosure. The method for judging the amount of refrigerant can be executed in the air conditioner, and can also be executed in a server, such as a cloud platform that communicates with the air conditioner. In the embodiment of the present disclosure, the solution is described by taking the processor of the air conditioner as the execution body.

As shown in Figure 2, the method for judging the amount of refrigerant includes:

S201. The processor obtains the actual noise value of the outdoor unit of the air conditioner.

Wherein, the actual noise value of the outdoor unit is measured by the noise detection device and sent to the processor of the air conditioner. The noise detection device can be arranged on the wall near the outdoor unit of the air conditioner, on the surface of the casing of the outdoor unit of the air conditioner, inside the casing, etc., or can be used as a separate device.

It is also possible to set the time period for noise value detection. The noise value is detected every other cycle.

The time period is set by the user or set according to big data. In this way, it is possible to detect whether the refrigerant is missing in time, and at the same time avoid wasting resources by continuous detection.

S202. The processor compares the actual noise value with a preset standard noise value.

The standard noise value can be measured through experiments, and then the measured standard noise value can be stored for recall.

S203, when the actual noise value is lower than the standard noise value, the processor determines that the amount of refrigerant is missing.

Using the method for judging the amount of refrigerant provided by the embodiments of the present disclosure can achieve the following technical effects: after obtaining the actual noise value of the outdoor unit of the air conditioner, judge whether there is a lack of refrigerant according to the magnitude relationship between the actual noise value and the standard noise value. In this way, in the actual application process, it is only necessary to detect the actual noise value of the air conditioner to determine whether the amount of refrigerant is lower than the standard amount of refrigerant, which greatly simplifies the process of judging the amount of refrigerant in the air conditioner.

Optionally, the obtaining of the actual noise value may be continuous. That is, the noise detection device keeps track of the actual noise value of the outdoor unit, and sends the noise value to the processor. The comparison of the actual noise value with the standard noise value is likewise carried out continuously. In this way, the lack of refrigerant quantity can be detected at the first time, so that the user or related personnel can make corresponding operations in time, and avoid the negative impact of the lack of refrigerant quantity on the use of the air conditioner.

Optionally, the acquisition of the actual noise value may also be intermittent. Specifically, the acquisition of the actual noise value may be periodic. That is, the noise detection device periodically detects the actual noise value of the outdoor unit, and sends the actual noise value to the processor. Or, the noise detection device continuously detects the actual noise value of the outdoor unit, and periodically sends the actual noise value to the processor. The actual noise value is compared with the standard noise value periodically. In this way, resource consumption can be reduced while ensuring the determination of the amount of refrigerant.

Optionally, there are multiple standard noise values, corresponding to different working conditions, such as cooling working conditions, heating working conditions, and so on.

Optionally, the processor compares the actual noise value with a preset standard noise value, including: comparing the actual noise value under the current working condition with the corresponding standard noise value. Specifically, the processor retrieves a standard noise value corresponding to the current working condition, and compares the actual noise value with the standard noise value. In this way, the amount of refrigerant can be judged during normal use of the air conditioner, which has little impact on the user and provides a good user experience.

Optionally, the processor compares the actual noise value with a preset standard noise value, and further includes: comparing the actual noise value under multiple working conditions with the corresponding standard noise value. Specifically, the air conditioner is adjusted to N different working conditions, the processor obtains N actual noise values, and compares the obtained N actual noise values with standard noise values under corresponding working conditions. In this way, errors are reduced, and the judgment of the amount of refrigerant is more accurate.

Optionally, in S203, when the actual noise value is lower than the standard noise value, the processor determines that the amount of refrigerant is missing, including: in the case of N actual noise values measured, the N actual noise values are all less than When the corresponding standard noise value is reached, the processor judges that the amount of refrigerant is missing. In this way, it is determined that the refrigerant is missing only when all the detected conditions are consistent with the lack of refrigerant, which can reduce misjudgment.

Optionally, S203, when the actual noise value is lower than the standard noise value, the processor determines that the amount of refrigerant is missing, and further includes: in the case of N measured actual noise values, M actual noise values are less than When the corresponding standard noise value is reached, the processor judges that the amount of refrigerant is missing. Among them, M is smaller than N. In this way, it is possible to avoid being affected by individual cases where the amount of refrigerant is actually missing, but the actual noise value is not less than the standard noise value, thereby effectively avoiding misjudgment.

Fig. 3 is a schematic diagram of a method for judging the amount of refrigerant provided by an embodiment of the present disclosure. The method for judging the amount of refrigerant can be executed in the air conditioner, and can also be executed in a server, such as a cloud platform that communicates with the air conditioner. In the embodiment of the present disclosure, the solution is described by taking the processor of the air conditioner as the execution body.

As shown in Figure 3, the method for judging the amount of refrigerant includes:

S301. The processor obtains the actual noise value of the outdoor unit of the air conditioner.

S302. The processor compares the actual noise value with a preset standard noise value.

S303, when the actual noise value is lower than the standard noise value, the processor determines that the amount of refrigerant is missing.

S304. The processor calculates the refrigerant missing ratio according to the actual noise value and the standard noise value.

Using the method for judging the amount of refrigerant provided by the embodiments of the present disclosure can achieve the following technical effects: after obtaining the actual noise value of the outdoor unit of the air conditioner, judge whether there is a lack of refrigerant according to the magnitude relationship between the actual noise value and the standard noise value. In this way, in the actual application process, it is only necessary to detect the actual noise value of the air conditioner to determine whether the amount of refrigerant is lower than the standard amount of refrigerant, which greatly simplifies the process of judging the amount of refrigerant in the air conditioner. In addition, the specific refrigerant missing ratio can be calculated according to the actual noise value and the standard noise value, which can be used to guide the actual refrigerant filling operation.

Optionally, in S304, the calculation of the missing refrigerant ratio by the processor according to the actual noise value and the marked noise value includes:

The processor calculates the refrigerant missing ratio

Among them, A is the standard noise value, T is the actual noise value, and K is the reference value of refrigerant sound.

In this way, an accurate refrigerant missing ratio can be obtained, and specific values can be provided for users or relevant personnel, so as to perform different operations according to the value of the refrigerant missing ratio.

There are three main sources of standard noise value A: fan noise, compressor noise and refrigerant sound. Therefore, the refrigerant sound reference value K is the measured standard noise value A minus the fan noise value and compressor noise value under the corresponding working conditions. The reference value K of refrigerant sound under different working conditions can be obtained through experiments, and then the measured K value can be stored for recall. In this way, the calculated refrigerant loss ratio is more accurate.

Optionally, different noise sources can be distinguished by analyzing the frequency of the noise values. The frequency of fan noise and compressor noise is low, and the frequency of refrigerant sound is high. In the absence of refrigerant, the frequency of the refrigerant sound increases. In this way, the noise values from different sources can be further distinguished, so that the judgment on the amount of refrigerant can be more accurate.

Fig. 4 is a schematic diagram of a method for judging the amount of refrigerant provided by an embodiment of the present disclosure. The method for judging the amount of refrigerant can be executed in the air conditioner, or in a server, such as a cloud platform that communicates with the air conditioner. In the embodiment of the present disclosure, the solution is described by taking the processor of the air conditioner as the execution body.

As shown in Figure 4, the method for judging the amount of refrigerant includes:

S401. The processor acquires the actual noise value of the outdoor unit of the air conditioner.

S402. The processor compares the actual noise value with a preset standard noise value.

S403, when the actual noise value is lower than the standard noise value, the processor determines that the amount of refrigerant is missing.

S404. The processor calculates the refrigerant missing ratio according to the actual noise value and the standard noise value.

S405. In the case that the refrigerant missing ratio is greater than or equal to the refrigerant threshold, the processor sends a prompt instruction.

Using the method for judging the amount of refrigerant provided by the embodiments of the present disclosure can achieve the following technical effects: after obtaining the actual noise value of the outdoor unit of the air conditioner, judge whether there is a lack of refrigerant according to the magnitude relationship between the actual noise value and the standard noise value. In this way, in the actual application process, it is only necessary to detect the actual noise value of the air conditioner to determine whether the amount of refrigerant is lower than the standard amount of refrigerant, which greatly simplifies the process of judging the amount of refrigerant in the air conditioner. In addition, the specific refrigerant missing ratio can be calculated according to the actual noise value and the standard noise value, and used to guide the refrigerant filling operation.

Optionally, the value range of the refrigerant threshold is [3%, 8%]. Specifically, it may be 4%, 5%, 6% or 7%. The lack of refrigerant within this range has negligible impact on the use of the air conditioner, so that frequent notifications to the user can be avoided. It can avoid unnecessary refrigerant filling, thereby simplifying user operations.

Optionally, the processor sending the prompt instruction includes: the air conditioner is electrically connected to other terminal equipment, and sends the prompt instruction to the other terminal equipment. The terminal device can be the user's smart phone, computer, etc., it can be smart home appliances such as smart refrigerators and smart speakers, and it can also be a reminder light. For example, the smart speaker can be controlled to emit a preset prompt sound and the like. or the control indicator lights up.

Fig. 5 is a schematic diagram of a method for judging the amount of refrigerant provided by an embodiment of the present disclosure. The method for judging the amount of refrigerant can be executed in the air conditioner, and can also be executed in a server, such as a cloud platform that communicates with the air conditioner. In the embodiment of the present disclosure, the solution is described by taking the processor of the air conditioner as the execution body.

As shown in Figure 5, the method for judging the amount of refrigerant includes:

S501. The processor obtains the actual noise value of the outdoor unit of the air conditioner.

S502. The processor compares the actual noise value with a preset standard noise value.

S503, when the actual noise value is lower than the standard noise value, the processor determines that the amount of refrigerant is missing.

S504. The processor calculates the refrigerant missing ratio according to the actual noise value and the standard noise value.

S505. The processor calculates the charging amount according to the refrigerant deficiency ratio.

Using the method for judging the amount of refrigerant provided by the embodiments of the present disclosure can achieve the following technical effects: After obtaining the actual noise value of the outdoor unit of the air conditioner, it is judged whether the refrigerant is missing according to the magnitude relationship between the actual noise value and the standard noise value. In this way, in the actual application process, it is only necessary to detect the actual noise value of the air conditioner to determine whether the amount of refrigerant is lower than the standard amount of refrigerant, which greatly simplifies the process of judging the amount of refrigerant in the air conditioner. In addition, the accurate refrigerant filling amount can be calculated, which is convenient for relevant personnel to add refrigerant according to the refrigerant filling amount.

Optionally, in S505, the processor calculates the filling amount according to the refrigerant loss ratio, including:

The processor obtains the standard refrigerant perfusion amount M0, and calculates the perfusion amount M=B*M0.

Among them, B is the refrigerant missing ratio.

Here, the standard refrigerant charging amount is stored in the memory of the air conditioner before leaving the factory, and can be directly retrieved when in use. This value is directly related to the model of the user's air conditioner. For example, if the refrigerant is R410A, when the power is 1 horsepower, the perfusion volume is about 800-1000g; when the power is 2 horsepower, the perfusion volume is about 800-1000g; when the power is 3 horsepower, the perfusion volume is about 1200g-1500g.

Optionally, the air conditioner is connected with the display screen. The processor sends the refrigerant missing ratio and the charging amount to the display, and the display shows them. In this way, the user or relevant maintenance personnel can intuitively know the lack of the amount of refrigerant, and then adjust the amount of refrigerant more accurately.

As shown in FIG. 6 , an embodiment of the present disclosure provides a device for judging the amount of refrigerant, including a processor (processor) 60 and a memory (memory) 61 . Optionally, the device may also include a communication interface (Communication Interface) 62 and a bus 63. Wherein, the processor 60 , the communication interface 62 , and the memory 61 can communicate with each other through the bus 63 . Communication interface 62 may be used for information transfer. The processor 60 may invoke logic instructions in the memory 61 to execute the method for judging the amount of refrigerant in the above-mentioned embodiments.

In addition, the logic instructions in the above-mentioned memory 61 can be implemented in the form of software function units and can be stored in a computer-readable storage medium when sold or used as an independent product.

As a storage medium, the memory 61 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 60 executes the function application and data processing by running the program instructions/modules stored in the memory 61 , that is, realizes the method for judging the amount of refrigerant in the above-mentioned embodiments.

The memory 61 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 61 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 judging the amount of refrigerant.

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 judging the amount of refrigerant.

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 identical elements in the process, method or apparatus comprising said element. Herein, each embodiment may focus on the differences from other embodiments, and reference may be made to each other for the same and similar parts of the various embodiments. 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 judging the amount of refrigerant, comprising:

Obtain the actual noise value of the outdoor unit of the air conditioner;

Compare the actual noise value with the preset standard noise value;

When the actual noise value is lower than the standard noise value, it is determined that the amount of refrigerant is missing.
The method according to claim 1, further comprising: calculating a refrigerant missing ratio according to the actual noise value and the standard noise value when the actual noise value is lower than the standard noise value.
The method according to claim 2, wherein the calculating the refrigerant loss ratio comprises:

Calculating the missing ratio of refrigerant

Among them, A is the standard noise value, T is the actual noise value, and K is the reference value of refrigerant sound.
The method according to claim 2, characterized in that after calculating the refrigerant loss ratio, further comprising:

In the case that the refrigerant missing ratio is greater than or equal to the refrigerant threshold, a prompt instruction is issued.
The method according to claim 4, characterized in that the value range of the refrigerant threshold is [3%, 8%].
The method according to any one of claims 2 to 5, characterized in that after calculating the refrigerant loss ratio, it further includes:

Calculate the perfusion amount according to the refrigerant loss ratio.
The method according to claim 6, wherein the calculating the perfusion amount according to the refrigerant loss ratio comprises:

Obtain the standard refrigerant filling amount M0;

Calculate perfusion volume M=B*M0;

Among them, B is the refrigerant missing ratio.
A device for judging the amount of 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 judging the amount of refrigerant described above.
An air conditioner, characterized by comprising the device for judging the amount of refrigerant according to claim 8 .
A storage medium storing program instructions, wherein the program instructions execute the method for judging the amount of refrigerant according to any one of claims 1 to 7 when running.