WO2023241071A1

WO2023241071A1 - Method and apparatus for performing detection on electronic expansion valve, and storage medium

Info

Publication number: WO2023241071A1
Application number: PCT/CN2023/075190
Authority: WO
Inventors: 石贤光; 矫立涛; 冯景学; 邱洪刚; 郑恩森; 周晓枫; 李江飞; 贾淑玲; 高源�
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: 2022-06-13
Filing date: 2023-02-09
Publication date: 2023-12-21
Also published as: CN115111816A

Abstract

The present application relates to the technical field of the detection of electronic expansion valves. Disclosed is a method for performing detection on an electronic expansion valve. The method comprises: obtaining the operation frequency of an air conditioner compressor; if the operation frequency of the compressor is not less than a preset frequency, determining an opening degree variation and an exhaust temperature correction amount of the electronic expansion valve; and determining detection information of the electronic expansion valve according to the opening degree variation and the exhaust temperature correction amount of the electronic expansion valve. By means of the scheme, detection information of an electronic expansion valve can be determined in combination with an opening degree variation and an exhaust temperature correction amount of the electronic expansion valve, thereby avoiding the problem of ignoring some abnormal conditions, and providing a more accurate electronic expansion valve fault detection scheme for a user. Further disclosed in the present application are an apparatus for performing detection on an electronic expansion valve, and a storage medium.

Description

Method, device and storage medium for detecting electronic expansion valve

This application is filed based on a Chinese patent application with application number 202210661983.8 and a filing date of June 13, 2022, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated into this application as a reference.

Technical field

The present application relates to the technical field of electronic expansion valve detection, for example, to a method, device and storage medium for detecting an electronic expansion valve.

Background technique

At present, air conditioners have become a must-have for people's homes. Especially when the outdoor temperature is high or low, users can control the air conditioner to operate in the corresponding mode to adjust the temperature of the room where the air conditioner is located. As an essential throttling device in air conditioners, the electronic expansion valve's fault detection method has also been the focus of R&D personnel.

The existing electronic expansion valve detection scheme includes: obtaining the current exhaust temperature of the compressor, calculating the compressor exhaust temperature and the current opening increase preset of the electronic expansion valve when the electronic expansion valve fault detection command is detected. The temperature difference of the compressor exhaust temperature after opening; when the temperature difference is outside the preset temperature difference range, it is determined that the electronic expansion valve is faulty. It can be seen that the existing detection scheme of the electronic expansion valve can detect some fault conditions of the electronic expansion valve, but this detection scheme still cannot detect the fault caused by the electronic expansion valve coil not being installed in place or the electronic expansion valve being stuck. The fault condition caused the detection information output by the electronic expansion valve to be inaccurate.

Contents of the invention

In order to provide a basic understanding of some aspects of the disclosed embodiments, a simplified summary is provided below. This summary is not intended to be a general review, nor is it intended to identify key/important elements or delineate the scope of the embodiments, but is intended to serve as a prelude to the detailed description that follows.

Embodiments of the present disclosure provide a method, device, and storage medium for detecting an electronic expansion valve, so as to provide a more accurate detection method for an electronic expansion valve.

In some embodiments, the method for detecting an electronic expansion valve includes: obtaining the operating frequency of the air conditioning compressor; and determining the opening change of the electronic expansion valve when the operating frequency of the compressor is not lower than a preset frequency. and the exhaust temperature correction amount; determine the detection information of the electronic expansion valve based on the opening change amount of the electronic expansion valve and the exhaust temperature correction amount.

In some embodiments, the method for detecting an electronic expansion valve includes: changing the opening degree of the electronic expansion valve When it is less than the first opening threshold and the exhaust gas temperature correction amount is less than the first temperature threshold, it is determined that the detection information of the electronic expansion valve is a fault; when the opening change of the electronic expansion valve is not less than the first opening threshold and not If it is higher than the second opening threshold, it is determined that the detection information of the electronic expansion valve is normal; if the opening change of the electronic expansion valve is greater than the second opening threshold and the exhaust gas temperature correction amount is greater than the second temperature threshold , confirm that the detection information of the electronic expansion valve is faulty.

In some embodiments, the method for detecting an electronic expansion valve includes: obtaining the initial opening of the electronic expansion valve when the operating frequency of the compressor is a preset frequency; and obtaining the electronic expansion valve after a preset period of time. The current opening of the valve; the difference between the current opening and the initial opening is determined as the opening change of the electronic expansion valve.

In some embodiments, the method for detecting an electronic expansion valve includes: obtaining the exhaust gas temperature change and the ambient temperature change; determining the difference between the exhaust gas temperature change and the ambient temperature change as the exhaust temperature Correction amount.

In some embodiments, the method for detecting an electronic expansion valve includes: obtaining the initial exhaust temperature of the compressor when the operating frequency of the compressor is a preset frequency; and obtaining the compressor's initial discharge temperature after a preset period of time. the current exhaust temperature; the difference between the current exhaust temperature and the initial exhaust temperature is used as the exhaust temperature change.

In some embodiments, the method for detecting an electronic expansion valve includes: when the operating frequency of the compressor is a preset frequency, obtaining the initial ambient temperature of the environment where the air conditioner is located; and after a preset period of time, obtaining the environment where the air conditioner is located. The current ambient temperature of the environment; the difference between the current ambient temperature and the initial ambient temperature is used as the ambient temperature change.

In some embodiments, the method for detecting an electronic expansion valve includes: pushing detection information to a target user so that the target user knows the operating status of the electronic expansion valve.

In some embodiments, the device for detecting an electronic expansion valve includes: an obtaining module configured to obtain the operating frequency of the air conditioning compressor; a first determining module configured to operate when the operating frequency of the compressor is not lower than a predetermined Under the condition of setting the frequency, determine the opening change amount of the electronic expansion valve and the exhaust gas temperature correction amount; the second determination module is configured to determine the electronic expansion valve based on the opening change amount of the electronic expansion valve and the exhaust gas temperature correction amount. detection information.

In some embodiments, the device for detecting an electronic expansion valve includes: a processor and a memory storing program instructions. The processor is configured to execute the aforementioned method for detecting an electronic expansion valve when running the program instructions. .

In some embodiments, the storage medium stores program instructions, and when the program instructions are run, the aforementioned method for detecting the electronic expansion valve is executed.

The method, device and storage medium for detecting an electronic expansion valve provided by embodiments of the present disclosure can achieve the following technical effects: by obtaining the operating frequency of the air conditioning compressor; when the operating frequency of the compressor is not lower than the preset frequency , determine the opening change amount of the electronic expansion valve and the exhaust gas temperature correction amount; determine the detection information of the electronic expansion valve based on the opening change amount of the electronic expansion valve and the exhaust gas temperature correction amount. This solution can combine the opening change of the electronic expansion valve and the exhaust temperature correction amount to determine the detection information of the electronic expansion valve, avoiding the problem of some abnormal conditions being ignored, and providing users with a more accurate electronic expansion method. Valve failure detection scheme.

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

Description of the drawings

One or more embodiments are exemplified by corresponding drawings. These exemplary descriptions and drawings do not constitute limitations to the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings are not limited to scale and in which:

Figure 1 is a schematic diagram of a method for detecting an electronic expansion valve provided by an embodiment of the present disclosure;

Figure 2 is a schematic diagram of a method for determining the amount of change in opening provided by an embodiment of the present disclosure;

Figure 3 is a schematic diagram of a method for determining the exhaust gas temperature correction amount provided by an embodiment of the present disclosure;

Figure 4 is a schematic diagram of a method for obtaining the exhaust gas temperature change provided by an embodiment of the present disclosure;

Figure 5 is a schematic diagram of a device for detecting an electronic expansion valve provided by an embodiment of the present disclosure;

Figure 6 is a schematic diagram of another device for detecting an electronic expansion valve 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 with reference to the accompanying drawings. The attached drawings are for reference only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for convenience of explanation, multiple 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 to simplify the drawings.

The terms "first", "second", etc. 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 data so used are interchangeable under appropriate circumstances for the purposes of the embodiments of the disclosure described herein. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

Unless otherwise stated, 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 association relationship describing objects, indicating that three relationships can exist. For example, A and/or B means: A or B, or A and B.

The term "correspondence" can refer to an association relationship or a binding relationship. The correspondence between A and B refers to an association relationship or a binding relationship between A and B.

In the embodiment of the present disclosure, smart home appliances refer to home appliances that are formed by introducing microprocessors, sensor technology, and network communication technology into home appliances. They have the characteristics of intelligent control, smart perception, and smart applications. The characteristics of smart home appliances are The operation process often relies 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 connecting electronic devices.

In the embodiment of the present disclosure, the terminal device refers to an electronic device with a wireless connection function. The terminal device can communicate with the above smart home appliances by connecting to the Internet, or can directly communicate with the above smart home appliances through Bluetooth, wifi, etc. Make a communication connection. In some embodiments, the terminal device is, for example, a mobile device, a computer, or a vehicle-mounted device built into a floating vehicle, or any combination thereof. Mobile devices may include, for example, mobile phones, smart home devices, wearable devices, smart mobile devices, virtual reality devices, etc., or any combination thereof. Wearable devices may include, for example, smart watches, smart bracelets, pedometers, etc.

FIG. 1 is a schematic diagram of a method for detecting an electronic expansion valve provided by an embodiment of the present disclosure. As shown in FIG. 1 , an embodiment of the present disclosure provides a method for detecting an electronic expansion valve, including:

S11, the air conditioner obtains the operating frequency of its compressor.

S12, when the operating frequency of the compressor is not lower than the preset frequency, the air conditioner determines the opening change amount of the electronic expansion valve and the exhaust gas temperature correction amount.

S13: The air conditioner determines the detection information of the electronic expansion valve based on the opening change of the electronic expansion valve and the exhaust gas temperature correction amount.

In this solution, the air conditioner can obtain the operating frequency of the compressor. Further, the air conditioner can compare the operating frequency of the compressor with the preset frequency, and can determine that the operating frequency of the compressor tends to be stable when the operating frequency of the compressor is not lower than/reaches the preset frequency. Here, the preset frequency may be the frequency at which the compressor operates stably. In this way, the timing of obtaining the opening change amount of the electronic expansion valve and the exhaust gas temperature correction amount can be determined, ensuring that the opening change amount of the electronic expansion valve and the exhaust gas temperature correction amount are obtained with higher accuracy.

Further, after determining the opening change amount of the electronic expansion valve and the exhaust gas temperature correction amount, the air conditioner can determine the detection information of the electronic expansion valve in combination with the opening change amount of the electronic expansion valve and the exhaust gas temperature correction amount. Here, the detection information of the electronic expansion valve may include fault or normality.

The method for detecting the electronic expansion valve provided by the embodiment of the present disclosure is used to obtain the operating frequency of the air-conditioning compressor; when the operating frequency of the compressor is not lower than the preset frequency, the opening change amount of the electronic expansion valve is determined and the exhaust gas temperature correction amount; determine the detection information of the electronic expansion valve based on the opening change of the electronic expansion valve and the exhaust gas temperature correction amount. This solution can combine the opening change of the electronic expansion valve and the exhaust temperature correction amount to determine the detection information of the electronic expansion valve, avoiding the problem of some abnormal conditions being ignored, and providing users with a more accurate electronic expansion method. Valve failure detection scheme.

Optionally, S13, the air conditioner determines the detection information of the electronic expansion valve based on the opening change of the electronic expansion valve and the exhaust gas temperature correction, including:

When the opening change amount of the electronic expansion valve is less than the first opening threshold and the exhaust gas temperature correction amount is less than the first temperature threshold, the air conditioner determines that the detection information of the electronic expansion valve is a fault. When the opening change amount of the electronic expansion valve is not lower than the first opening threshold and not higher than the second opening threshold, the air conditioner determines that the detection information of the electronic expansion valve is normal. When the opening change amount of the electronic expansion valve is greater than the second opening threshold and the exhaust gas temperature correction amount is greater than the second temperature threshold, the air conditioner determines that the detection information of the electronic expansion valve is a fault.

In this solution, when the opening change amount of the electronic expansion valve is less than the first opening threshold and the exhaust gas temperature correction amount is less than the first temperature threshold, the air conditioner determines that the detection information of the electronic expansion valve is a fault. Here, the first opening threshold and the first temperature threshold may be stored in the air conditioner in advance. As an example, the first opening threshold may be -50 steps, and the first temperature threshold may be 2°C. In this way, when the change in the opening of the electronic expansion valve is less than -50 steps and the exhaust temperature correction is less than 2°C, the air conditioner can determine that the detection information of the electronic expansion valve is a fault; If it is not lower than the first opening threshold and not higher than the second opening threshold, the air conditioner determines that the detection information of the electronic expansion valve is normal. Here, the second opening threshold may be stored in the air conditioner in advance. As an example, the second opening threshold may be 50 steps. In this way, the air conditioner can determine that the detection information of the electronic expansion valve is normal when the change in the opening of the electronic expansion valve is not less than -50 steps and not higher than 50 steps; it can be determined that the change in the opening of the electronic expansion valve is greater than When the second opening threshold value and the exhaust gas temperature correction amount are greater than the second temperature threshold value, the air conditioner determines that the detection information of the electronic expansion valve is a fault. Here, the second temperature threshold may be stored in the air conditioner in advance. As an example, the second temperature threshold may be -2°C. In this way, when the opening change amount of the electronic expansion valve is greater than 50 steps and the exhaust temperature correction amount is greater than -2°C, the air conditioner can determine that the detection information of the electronic expansion valve is a fault. With this solution, the opening changes of the electronic expansion valve and the correction of the exhaust gas temperature can be comprehensively considered to determine more accurate detection information of the electronic expansion valve.

Figure 2 is a schematic diagram of a method for determining the opening change amount provided by an embodiment of the present disclosure. As shown in Figure 2, optionally, in S12, the air conditioner determines the opening change amount of the electronic expansion valve, including:

S21, when the operating frequency of the compressor is the preset frequency, the air conditioner obtains the initial opening of the electronic expansion valve.

S22, after the preset time period, the air conditioner obtains the current opening of the electronic expansion valve.

S23, the air conditioner determines the difference between the current opening and the initial opening as the opening change of the electronic expansion valve.

In this solution, when the operating frequency of the compressor is the preset frequency and it is determined that the air conditioner compressor is currently in a stable operating state, the air conditioner can obtain the current opening of the electronic expansion valve. Here, the current opening of the electronic expansion valve is the opening of the electronic expansion valve when the compressor operating frequency is the preset frequency. Furthermore, the air conditioner can obtain the current opening of the electronic expansion valve after a preset period of time. As an example, the preset duration may be 3 minutes. In this way, the air conditioner can determine the opening change of the electronic expansion valve by combining the initial opening of the electronic expansion valve and the current opening of the electronic expansion valve. Specifically, the opening change amount of the electronic expansion valve can be determined in the following way: △F = F _current - F _initial ; where △F is the opening change amount of the electronic expansion valve, and F _current is the current opening of the electronic expansion valve. , F is _initially the initial opening of the electronic expansion valve. In this way The solution can determine the difference between the current opening and the initial opening as the opening change of the electronic expansion valve, achieving accurate acquisition of the opening change, and providing an accurate data basis for determining the electronic expansion valve detection information.

Figure 3 is a schematic diagram of a method for determining the exhaust gas temperature correction amount provided by an embodiment of the present disclosure; combined with what is shown in Figure 3, optionally, S12, the air conditioner determines the exhaust gas temperature correction amount, including:

S31, the air conditioner obtains the exhaust gas temperature change amount and the ambient temperature change amount.

S32, the air conditioner determines the difference between the exhaust gas temperature change amount and the ambient temperature change amount as the exhaust gas temperature correction amount.

In this solution, in order to determine the exhaust temperature correction with higher accuracy, the air conditioner can obtain the exhaust temperature change and the ambient temperature change, and determine the exhaust temperature correction based on the exhaust temperature change and the ambient temperature change. quantity. Specifically, the exhaust temperature correction amount can be determined in the following way: △U=△T-△S; where △U is the exhaust temperature correction amount, △T is the exhaust temperature change amount, and △S is the ambient temperature change amount. . With this solution, the difference between the exhaust gas temperature change and the ambient temperature change can be determined as the exhaust temperature correction amount, achieving accurate acquisition of the exhaust temperature correction amount, and providing accurate information for determining the electronic expansion valve detection information. Data base.

Figure 4 is a schematic diagram of a method for obtaining the exhaust gas temperature change provided by an embodiment of the present disclosure; combined with what is shown in Figure 4, optionally, in S31, the air conditioner obtains the exhaust gas temperature change, including:

S41, when the operating frequency of the compressor is the preset frequency, the air conditioner obtains the initial exhaust temperature of the compressor.

S42, after the preset time period, the air conditioner obtains the current exhaust temperature of the compressor.

S43, the air conditioner uses the difference between the current exhaust temperature and the initial exhaust temperature as the exhaust temperature change amount.

In this solution, when the operating frequency of the compressor is the preset frequency and it is determined that the air conditioning compressor is currently in a stable operating state, the air conditioner can obtain the initial exhaust temperature of the compressor. Here, the initial discharge temperature of the compressor is the discharge temperature of the compressor when the operating frequency of the compressor is the preset frequency. Furthermore, the air conditioner can obtain the current exhaust temperature of the compressor after a preset period of time. As an example, the preset duration may be 3 minutes. In this way, the air conditioner can determine the amount of exhaust temperature change based on the initial exhaust temperature of the compressor and the current exhaust temperature of the compressor. Specifically, the exhaust gas temperature change amount can be determined in the following way: ΔT = T _current - T _initial ; where ΔT is the exhaust temperature change amount, T _current is the current exhaust temperature of the compressor, and T _initial is the compressor the initial exhaust temperature. With this solution, the difference between the current exhaust gas temperature and the initial exhaust temperature can be used as the exhaust temperature change amount to achieve accurate acquisition of the exhaust gas temperature change amount, providing an accurate data basis for determining the exhaust gas temperature correction amount. .

Optionally, in S31, the air conditioner obtains the ambient temperature change, including:

When the operating frequency of the compressor is the preset frequency, the air conditioner obtains the initial ambient temperature of its environment.

After a preset period of time, the air conditioner obtains the current ambient temperature of its environment.

The air conditioner takes the difference between the current ambient temperature and the initial ambient temperature as the ambient temperature change.

In this solution, when the operating frequency of the compressor is the preset frequency, it is determined that the air conditioning compressor is currently in a stable state. If the operating state is determined, the air conditioner can obtain the initial ambient temperature of its environment. Here, the initial ambient temperature of the environment where the air conditioner is located is the ambient temperature of the environment where the air conditioner is located when the operating frequency of the compressor is the preset frequency. Furthermore, the air conditioner can obtain the current ambient temperature of its environment after a preset period of time. As an example, the preset duration may be 3 minutes. In this way, the air conditioner can determine the amount of ambient temperature change based on the initial ambient temperature and current ambient temperature of the environment in which it is located. Specifically, the ambient temperature change amount can be determined in the following way: △S = S _current - S _initial ; where △S is the ambient temperature change amount, S _current is the current ambient temperature of the environment where the air conditioner is located, and S _initial is the ambient temperature of the environment where the air conditioner is located. Initial ambient temperature. With this solution, the difference between the current ambient temperature and the initial ambient temperature can be used as the ambient temperature change to achieve accurate acquisition of the ambient temperature change, providing an accurate data basis for determining the exhaust temperature correction.

Optionally, after determining the detection information of the electronic expansion valve, it also includes:

The air conditioner pushes detection information to the target user so that the target user knows the operating status of the electronic expansion valve.

In this solution, after the detection information of the electronic expansion valve is determined, in order to let the target users know the operating status of the electronic expansion valve in time and make timely and effective response measures to the operating status, the air conditioner can be controlled to push the detection information to the target user. Here, the target user may be the user with the highest priority among home users or the maintenance personnel associated with the air conditioner. Specifically, the push method of detecting information is not limited to text push, image push, light push, etc. This solution can enable target users to know the operating status of the electronic expansion valve in a timely manner, which will help to perform timely and effective maintenance of the electronic expansion valve when the electronic expansion valve fails, and reduce the risk of intelligent control of the air conditioner due to electronic expansion valve failure. adverse effects.

FIG. 5 is a schematic diagram 50 of a device for detecting an electronic expansion valve provided by an embodiment of the present disclosure; as shown in FIG. 5 , an embodiment of the present disclosure provides a device 50 for detecting an electronic expansion valve, including an acquisition module 51, a third A determining module 52 and a second determining module 53 . The obtaining module 51 is configured to obtain the operating frequency of the air conditioning compressor; the first determining module 52 is configured to determine the opening change amount of the electronic expansion valve and the exhaust gas when the operating frequency of the compressor is not lower than the preset frequency. Temperature correction amount; the second determination module 53 is configured to determine the detection information of the electronic expansion valve according to the opening change amount of the electronic expansion valve and the exhaust gas temperature correction amount.

The device for detecting the electronic expansion valve provided by the embodiment of the present disclosure is used to obtain the operating frequency of the air-conditioning compressor; when the operating frequency of the compressor is not lower than the preset frequency, the opening change amount of the electronic expansion valve is determined and the exhaust gas temperature correction amount; determine the detection information of the electronic expansion valve based on the opening change of the electronic expansion valve and the exhaust gas temperature correction amount. This solution can combine the opening change of the electronic expansion valve and the exhaust temperature correction amount to determine the detection information of the electronic expansion valve, avoiding the problem of some abnormal conditions being ignored, and providing users with a more accurate electronic expansion method. Valve failure detection scheme.

FIG. 6 is a schematic diagram 60 of another device for detecting an electronic expansion valve provided by an embodiment of the present disclosure. As shown in FIG. 6 , an embodiment of the present disclosure provides a device 60 for detecting an electronic expansion valve, including a processor. )100 and memory 101. Optionally, the device may also include a communication interface (Communication Interface) 102 and a bus 103. Among them, 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 transmission. The processor 100 can call logical instructions in the memory 101 to execute the method for detecting the electronic expansion valve in the above embodiment.

In addition, the above-mentioned logical 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, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes program instructions/modules stored in the memory 101 to execute functional applications and data processing, that is, to implement the method for detecting the electronic expansion valve in the above embodiment.

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

Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions configured to execute the above method for detecting an electronic expansion valve.

Embodiments of the present disclosure provide a computer program product. The computer program product includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the The computer executes the above method for detecting the electronic expansion valve.

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

An embodiment of the present disclosure provides a computer program that, when executed by a computer, causes the computer to implement the above method for detecting an electronic expansion valve.

Embodiments of the present disclosure provide a computer program product. The computer program product includes computer instructions stored on a computer-readable storage medium. When the program instructions are executed by a computer, the computer implements the above-mentioned method for detecting electronic components. Expansion valve method.

The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product. The computer software product is stored in a storage medium and includes 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 media can be non-transitory storage media, including: U disk, mobile 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 code or a temporary storage medium.

The foregoing description and drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples represent only possible variations. Unless explicitly required, individual components and features 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. Furthermore, the words used in this application are used only to describe the embodiments and not to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "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 encompass any and all possible combinations of one or more of the associated listed items. In addition, when used in this application, the term "comprise" and its variations "comprises" and/or "comprising" etc. refer to stated features, integers, steps, operations, elements, and/or The presence of a component does not exclude 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 defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method or apparatus including the stated element. In this article, each embodiment may focus on its differences from other embodiments, and the same and similar parts among various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiment, then the relevant parts can be referred to the description of the method part.

Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with 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. The skilled person may use different methods to implement the described functionality for each specific application, but such implementations should not be considered to be beyond the scope of the disclosed embodiments. The skilled person can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again 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. Either it can be integrated into another system, or some features can be ignored, or not implemented. In addition, the coupling or direct coupling or communication connection between each other shown or discussed 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 the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure can be integrated In one processing unit, each unit may exist physically alone, or two or more units may be integrated into one unit.

The flowcharts 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 components for implementing the specified logical function(s). 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 consecutive blocks may actually execute substantially in parallel, or they may sometimes execute in the reverse order, depending on 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 a sequence different from that disclosed in the description, and sometimes there is no specific distinction between different operations or steps. order. For example, two consecutive operations or steps may actually be performed substantially in parallel, or they may sometimes be performed in reverse order, depending on the functionality involved. Each block in the block diagram and/or flowchart illustration, and combinations of blocks in the block diagram and/or flowchart illustration, may be implemented by special purpose hardware-based systems that perform the specified functions or actions, or may be implemented using special purpose hardware implemented in combination with computer instructions.

Claims

A method for detecting an electronic expansion valve, characterized by including:

Obtain the operating frequency of the air conditioning compressor;

When the operating frequency of the compressor is not lower than the preset frequency, determine the opening change amount of the electronic expansion valve and the exhaust gas temperature correction amount;

The detection information of the electronic expansion valve is determined based on the opening change amount of the electronic expansion valve and the exhaust gas temperature correction amount.
The method of claim 1, wherein determining the detection information of the electronic expansion valve based on the opening change of the electronic expansion valve and the exhaust gas temperature correction includes:

When the opening change amount of the electronic expansion valve is less than the first opening threshold and the exhaust gas temperature correction amount is less than the first temperature threshold, determine that the detection information of the electronic expansion valve is a fault;

When the opening change amount of the electronic expansion valve is not lower than the first opening threshold and not higher than the second opening threshold, it is determined that the detection information of the electronic expansion valve is normal;

When the opening change amount of the electronic expansion valve is greater than the second opening threshold value and the exhaust gas temperature correction amount is greater than the second temperature threshold value, the detection information of the electronic expansion valve is determined to be a fault.
The method according to claim 1 or 2, characterized in that determining the opening change of the electronic expansion valve includes:

When the operating frequency of the compressor is a preset frequency, obtain the initial opening of the electronic expansion valve;

After a preset period of time, obtain the current opening of the electronic expansion valve;

The difference between the current opening and the initial opening is determined as the opening change of the electronic expansion valve.
The method according to any one of claims 1 to 3, characterized in that determining the exhaust gas temperature correction amount includes:

Obtain the exhaust gas temperature change and ambient temperature change;

The difference between the exhaust gas temperature change amount and the ambient temperature change amount is determined as the exhaust gas temperature correction amount.
The method of claim 4, wherein obtaining the exhaust gas temperature change includes:

When the operating frequency of the compressor is a preset frequency, obtain the initial exhaust temperature of the compressor;

After a preset period of time, obtain the current exhaust temperature of the compressor;

The difference between the current exhaust gas temperature and the initial exhaust gas temperature is taken as the exhaust gas temperature change amount.
The method according to claim 4, characterized in that obtaining the ambient temperature change includes:

When the operating frequency of the compressor is the preset frequency, the initial environment of the environment where the air conditioner is located is obtained. ambient temperature;

After a preset period of time, obtain the current ambient temperature of the environment where the air conditioner is located;

The difference between the current ambient temperature and the initial ambient temperature is taken as the ambient temperature change amount.
The method according to any one of claims 1 to 6, characterized in that, after determining the detection information of the electronic expansion valve, the method further includes:

Push the detection information to target users so that the target users know the operating status of the electronic expansion valve.
A device for detecting an electronic expansion valve, which is characterized by including:

an obtaining module configured to obtain the operating frequency of the air conditioning compressor;

A first determination module configured to determine the opening change amount and the exhaust gas temperature correction amount of the electronic expansion valve when the operating frequency of the compressor is not lower than the preset frequency;

The second determination module is configured to determine the detection information of the electronic expansion valve according to the opening change amount of the electronic expansion valve and the exhaust gas temperature correction amount.
A device for detecting an electronic expansion valve, including a processor and a memory storing program instructions, characterized in that the processor is configured to execute any one of claims 1 to 7 when running the program instructions. The method for detecting the electronic expansion valve described in the item.
A storage medium stores program instructions, characterized in that, when the program instructions are run, the method for detecting an electronic expansion valve according to any one of claims 1 to 7 is executed.
A computer program, when the computer program is executed by a computer, causes the computer to implement the method for detecting an electronic expansion valve according to any one of claims 1 to 7.
A computer program product. The computer program product includes computer instructions stored on a computer-readable storage medium. When the program instructions are executed by a computer, the computer implements any one of claims 1 to 7. Method for detecting electronic expansion valves.