CN115111816B - Method, device and storage medium for detecting electronic expansion valve - Google Patents
Method, device and storage medium for detecting electronic expansion valveInfo
- Publication number
- CN115111816B CN115111816B CN202210661983.8A CN202210661983A CN115111816B CN 115111816 B CN115111816 B CN 115111816B CN 202210661983 A CN202210661983 A CN 202210661983A CN 115111816 B CN115111816 B CN 115111816B
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- expansion valve
- electronic expansion
- opening
- variation
- determining
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
本申请涉及电子膨胀阀检测技术领域，公开一种用于检测电子膨胀阀的方法，包括：获得空调压缩机的运行频率；在压缩机的运行频率不低于预设频率的情况下，确定电子膨胀阀的开度变化量及排气温度修正量；根据电子膨胀阀的开度变化量及排气温度修正量，确定电子膨胀阀的检测信息。以此方案，能够结合电子膨胀阀的开度变化量及排气温度修正量，确定电子膨胀阀的检测信息，避免了部分异常情况被忽视的问题，为用户提供了一种更加精准地电子膨胀阀故障检测方案。本申请还公开一种用于检测电子膨胀阀的装置及存储介质。
The present application relates to the technical field of electronic expansion valve detection, and discloses a method for detecting an electronic expansion valve, including: obtaining the operating frequency of an air-conditioning compressor; determining the opening change of the electronic expansion valve and the exhaust temperature correction when the operating frequency of the compressor is not lower than a preset frequency; determining the detection information of the electronic expansion valve according to the opening change of the electronic expansion valve and the exhaust temperature correction. With this scheme, the detection information of the electronic expansion valve can be determined in combination with the opening change of the electronic expansion valve and the exhaust temperature correction, thereby avoiding the problem of some abnormal conditions being ignored, and providing users with a more accurate electronic expansion valve fault detection scheme. The present application also discloses a device and storage medium for detecting an electronic expansion valve.
Description
Technical Field
The present application relates to the field of electronic expansion valve detection technology, and for example, to a method, an apparatus, and a storage medium for detecting an electronic expansion valve.
Background
At present, air conditioners have become an essential choice for people's home, especially when the outdoor temperature is higher or lower, users can control the air conditioner to operate in a corresponding mode so as to adjust the temperature of the indoor space where the air conditioner is located. The electronic expansion valve is used as a necessary throttling device in the air conditioner, and a fault detection mode of the electronic expansion valve is also a focus of attention of research and development personnel.
The existing detection scheme of the electronic expansion valve comprises the steps of obtaining the current exhaust temperature of a compressor, calculating the temperature difference between the exhaust temperature of the compressor and the exhaust temperature of the compressor after the current opening of the electronic expansion valve is increased by a preset opening degree when an electronic expansion valve fault detection instruction is detected, and determining that the electronic expansion valve has a fault when the temperature difference is out of a preset temperature difference range. Therefore, the existing detection scheme of the electronic expansion valve can detect partial fault conditions of the electronic expansion valve, but the detection scheme still cannot detect fault conditions caused by the fact that the coil of the electronic expansion valve is not installed in place or the electronic expansion valve is clamped, so that inaccurate detection information output by the electronic expansion valve is caused.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.
The embodiment of the disclosure provides a method, a device and a storage medium for detecting an electronic expansion valve, so as to provide a more accurate detection method of the electronic expansion valve.
In some embodiments, the method for detecting the electronic expansion valve comprises the steps of obtaining the operating frequency of an air conditioner compressor, determining the opening change amount and the exhaust temperature correction amount of the electronic expansion valve under the condition that the operating frequency of the compressor is not lower than a preset frequency, and determining detection information of the electronic expansion valve according to the opening change amount and the exhaust temperature correction amount of the electronic expansion valve.
In some embodiments, the method for detecting the electronic expansion valve comprises determining that detection information of the electronic expansion valve is faulty when the opening variation of the electronic expansion valve is smaller than a first opening threshold value and the exhaust temperature correction amount is smaller than a first temperature threshold value, determining that detection information of the electronic expansion valve is normal when the opening variation of the electronic expansion valve is not smaller than the first opening threshold value and not higher than a second opening threshold value, and determining that detection information of the electronic expansion valve is faulty when the opening variation of the electronic expansion valve is larger than the second opening threshold value and the exhaust temperature correction amount is larger than the second temperature threshold value.
In some embodiments, the method for detecting the electronic expansion valve comprises the steps of obtaining an initial opening of the electronic expansion valve under the condition that the operation frequency of the compressor is a preset frequency, obtaining a current opening of the electronic expansion valve after a preset time period, and determining a difference value between the current opening and the initial opening as an opening variation of the electronic expansion valve.
In some embodiments, the method for detecting the electronic expansion valve comprises obtaining an exhaust gas temperature variation and an ambient temperature variation, and determining a difference between the exhaust gas temperature variation and the ambient temperature variation as an exhaust gas temperature correction amount.
In some embodiments, the method for detecting the electronic expansion valve comprises the steps of obtaining an initial discharge temperature of the compressor when the operation frequency of the compressor is a preset frequency, obtaining a current discharge temperature of the compressor after a preset time period, and taking a difference value between the current discharge temperature and the initial discharge temperature as a discharge temperature variation.
In some embodiments, the method for detecting the electronic expansion valve comprises the steps of obtaining an initial environmental temperature of an environment where the air conditioner is located under the condition that the operation frequency of the compressor is a preset frequency, obtaining a current environmental temperature of the environment where the air conditioner is located after a preset time period, and taking a difference value between the current environmental temperature and the initial environmental temperature as an environmental temperature variation.
In some embodiments, the method for detecting an electronic expansion valve includes pushing detection information to a target user to make the target user aware of an operational state of the electronic expansion valve.
In some embodiments, the device for detecting the electronic expansion valve comprises an obtaining module, a first determining module and a second determining module, wherein the obtaining module is configured to obtain the operation frequency of the air conditioner compressor, the first determining module is configured to determine the opening degree variation and the exhaust temperature correction amount of the electronic expansion valve under the condition that the operation frequency of the compressor is not lower than a preset frequency, and the second determining module is configured to determine the detection information of the electronic expansion valve according to the opening degree variation and the exhaust temperature correction amount of the electronic expansion valve.
In some embodiments, the apparatus for detecting an electronic expansion valve includes a processor and a memory storing program instructions, the processor being configured to perform the aforementioned method for detecting an electronic expansion valve when the program instructions are executed.
In some embodiments, the storage medium stores program instructions that, when executed, perform the aforementioned method for detecting an electronic expansion valve.
The method, the device and the storage medium for detecting the electronic expansion valve have the advantages that the operating frequency of the air conditioner compressor is obtained, the opening change amount and the exhaust temperature correction amount of the electronic expansion valve are determined under the condition that the operating frequency of the compressor is not lower than the preset frequency, and the detection information of the electronic expansion valve is determined according to the opening change amount and the exhaust temperature correction amount of the electronic expansion valve. With this scheme, can combine the aperture variation and the exhaust temperature correction of electronic expansion valve, confirm the detection information of electronic expansion valve, avoid partial unusual condition to be ignored's problem, provide a more accurate electronic expansion valve fault detection scheme for the user.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:
FIG. 1 is a schematic diagram of a method for detecting an electronic expansion valve provided by an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a method for determining opening variation provided by an embodiment of the present disclosure;
FIG. 3 is a schematic illustration of a method for determining an exhaust temperature correction amount provided by an embodiment of the present disclosure;
FIG. 4 is a schematic illustration of a method for obtaining exhaust gas temperature variation provided by an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of an apparatus for detecting an electronic expansion valve provided in an embodiment of the present disclosure;
fig. 6 is a schematic diagram of another apparatus for detecting an electronic expansion valve provided by an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, 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 still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.
The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The term "plurality" means two or more, unless otherwise indicated.
In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents A or B.
The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, A and/or B, represent A or B, or three relationships of A and B.
The term "corresponding" may refer to an association or binding relationship, and the correspondence between a and B refers to an association or binding relationship between a and B.
In the embodiment of the disclosure, the intelligent home appliance refers to a home appliance formed after a microprocessor, a sensor technology and a network communication technology are introduced into the home appliance, and has the characteristics of intelligent control, intelligent sensing and intelligent application, the operation process of the intelligent home appliance often depends on the application and processing of modern technologies such as the internet of things, the internet and an electronic chip, for example, the intelligent home appliance can realize remote control and management of a user on the intelligent home appliance by connecting the electronic appliance.
In the embodiment of the disclosure, the terminal device refers to an electronic device with a wireless connection function, and the terminal device can be in communication connection with the intelligent household electrical appliance through connecting with the internet, and can also be in communication connection with the intelligent household electrical appliance through Bluetooth, wifi and other modes. In some embodiments, the terminal device is, for example, a mobile device, a computer, or an in-vehicle device built into a hover vehicle, etc., or any combination thereof. The mobile device may include, for example, a cell phone, smart home device, wearable device, smart mobile device, virtual reality device, etc., or any combination thereof, wherein the wearable device includes, for example, a smart watch, smart bracelet, pedometer, etc.
Fig. 1 is a schematic diagram of a method for detecting an electronic expansion valve according to an embodiment of the present disclosure, and in combination with fig. 1, the embodiment of the present disclosure provides a method for detecting an electronic expansion valve, including:
S11, the air conditioner obtains the operation frequency of a compressor of the air conditioner.
S12, under the condition that the operation frequency of the compressor is not lower than a preset frequency, the air conditioner determines the opening degree variation of the electronic expansion valve and the exhaust temperature correction quantity.
S13, the air conditioner determines detection information of the electronic expansion valve according to the opening change amount and the exhaust temperature correction amount of the electronic expansion valve.
In this scheme, the air conditioner may obtain the operating frequency of the compressor. Further, the air conditioner may compare the operation frequency of the compressor with a preset frequency, and may determine that the operation frequency of the compressor tends to be stable in the case that the operation frequency of the compressor is not lower than/reaches the preset frequency. Here, the preset frequency may be a frequency at which the compressor stably operates. In this way, the opening degree variation of the electronic expansion valve and the timing for acquiring the exhaust gas temperature correction amount can be determined, and the opening degree variation of the electronic expansion valve and the exhaust gas temperature correction amount with higher acquisition accuracy can be ensured.
Further, the air conditioner may determine the detection information of the electronic expansion valve by combining the opening change amount of the electronic expansion valve and the exhaust temperature correction amount after determining the opening change amount of the electronic expansion valve and the exhaust temperature correction amount. Here, the detection information of the electronic expansion valve may include a malfunction or a normal.
The method for detecting the electronic expansion valve comprises the steps of obtaining the operating frequency of an air conditioner compressor, determining the opening change amount and the exhaust temperature correction amount of the electronic expansion valve under the condition that the operating frequency of the compressor is not lower than a preset frequency, and determining detection information of the electronic expansion valve according to the opening change amount and the exhaust temperature correction amount of the electronic expansion valve. With this scheme, can combine the aperture variation and the exhaust temperature correction of electronic expansion valve, confirm the detection information of electronic expansion valve, avoid partial unusual condition to be ignored's problem, provide a more accurate electronic expansion valve fault detection scheme for the user.
Optionally, S13, the air conditioner determines detection information of the electronic expansion valve according to the opening variation of the electronic expansion valve and the exhaust temperature correction amount, including:
When the opening change amount of the electronic expansion valve is smaller than the first opening threshold value and the exhaust temperature correction amount is smaller than the first temperature threshold value, the air conditioner determines that the detection information of the electronic expansion valve is a fault. The air conditioner determines that the detection information of the electronic expansion valve is normal in the case where the opening variation amount of the electronic expansion valve is not lower than the first opening threshold value and not higher than the second opening threshold value. The air conditioner determines that the detection information of the electronic expansion valve is a failure when the opening variation of the electronic expansion valve is greater than the second opening threshold and the exhaust temperature correction amount is greater than the second temperature threshold.
In this aspect, the air conditioner determines that the detection information of the electronic expansion valve is a failure when the opening amount variation of the electronic expansion valve is smaller than the first opening threshold value and the exhaust temperature correction amount is smaller than the first temperature threshold value. Here, the first opening threshold value and the first temperature threshold value may be stored in the air conditioner in advance, and as an example, the first opening threshold value may be-50 steps, and the first temperature threshold value may be 2 ℃. In this way, the air conditioner can determine that the detection information of the electronic expansion valve is a fault when the opening variation of the electronic expansion valve is smaller than-50 steps and the exhaust temperature correction amount is smaller than 2 ℃, and can determine that the detection information of the electronic expansion valve is normal when the opening variation of the electronic expansion valve is not lower than the first opening threshold value and not higher than the second opening threshold value. Here, the second opening degree threshold value may be stored in the air conditioner in advance, and as an example, the second opening degree threshold value 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 opening variation of the electronic expansion valve is not lower than-50 steps and not higher than 50 steps, and can determine that the detection information of the electronic expansion valve is faulty when the opening variation of the electronic expansion valve is greater than a second opening threshold and the exhaust temperature correction amount is greater than a second temperature threshold. Here, the second temperature threshold value may be pre-stored in the air conditioner, and as an example, the second temperature threshold value may be-2 ℃. In this way, the air conditioner can determine that the detection information of the electronic expansion valve is a failure in the case where the opening amount variation of the electronic expansion valve is greater than 50 steps and the exhaust temperature correction amount is greater than-2 ℃. With this scheme, can take into account the aperture change condition and the exhaust temperature correction condition of electronic expansion valve comprehensively, confirm the detection information of more accurate electronic expansion valve.
Fig. 2 is a schematic diagram of a method for determining an opening variation according to an embodiment of the present disclosure, and optionally, with reference to fig. 2, S12, the air conditioner determines an opening variation of an electronic expansion valve, including:
s21, under the condition that the operation frequency of the compressor is a preset frequency, the air conditioner obtains the initial opening degree of the electronic expansion valve.
S22, after a preset time, the air conditioner obtains the current opening of the electronic expansion valve.
S23, the air conditioner determines a difference value between the current opening and the initial opening as an opening variation of the electronic expansion valve.
In the scheme, under the condition that the operation frequency of the compressor is the preset frequency, the air conditioner is determined to be in a stable operation state at present, and then the air conditioner can obtain the current opening of the electronic expansion valve. Here, the current opening degree of the electronic expansion valve is the opening degree of the electronic expansion valve when the compressor operation frequency is a preset frequency. Further, the air conditioner may 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. Thus, the air conditioner can combine the initial opening of the electronic expansion valve and the current opening of the electronic expansion valve to determine the opening variation of the electronic expansion valve. Specifically, the opening degree variation of the electronic expansion valve may be determined by Δf=f Currently, the method is that -F Initial initiation , where Δf is the opening degree variation of the electronic expansion valve, F Currently, the method is that is the current opening degree of the electronic expansion valve, and F Initial initiation is the initial opening degree of the electronic expansion valve. According to the scheme, the difference value between the current opening and the initial opening can be determined as the opening variation of the electronic expansion valve, so that the accurate acquisition of the opening variation is realized, and an accurate data basis is provided for the determination of the detection information of the electronic expansion valve.
FIG. 3 is a schematic diagram of a method for determining an exhaust temperature correction amount according to an embodiment of the present disclosure, and optionally, with reference to FIG. 3, S12, the air conditioner determines the exhaust temperature correction amount, including:
s31, the air conditioner obtains exhaust temperature variation and environment temperature variation.
S32, the air conditioner determines a difference between the exhaust temperature variation and the ambient temperature variation as an exhaust temperature correction amount.
In this scheme, in order to determine the exhaust temperature correction amount with higher accuracy, the air conditioner may obtain the exhaust temperature variation and the ambient temperature variation, and determine the exhaust temperature correction amount in combination with the exhaust temperature variation and the ambient temperature variation. Specifically, the exhaust temperature correction amount may be determined by Δu= Δt- Δs, where Δu is the exhaust temperature correction amount, Δt is the exhaust temperature variation amount, and Δs is the ambient temperature variation amount. With this scheme, can be with the difference of exhaust temperature variation and environment temperature variation, confirm as exhaust temperature correction, realize the accurate acquisition of exhaust temperature correction, provide accurate data basis for the determination of electronic expansion valve detection information.
Fig. 4 is a schematic diagram of a method for obtaining an exhaust gas temperature variation according to an embodiment of the present disclosure, and in combination with fig. 4, optionally, S31, the air conditioner obtains an exhaust gas temperature variation, including:
S41, in the case that the operation frequency of the compressor is a preset frequency, the air conditioner obtains the initial discharge temperature of the compressor.
S42, after a preset time period, the air conditioner obtains the current exhaust temperature of the compressor.
S43, the air conditioner takes the difference between the current exhaust temperature and the initial exhaust temperature as the exhaust temperature variation.
In the scheme, under the condition that the operation frequency of the compressor is the preset frequency, the air conditioner can obtain the initial exhaust temperature of the compressor by determining that the air conditioner compressor is in a stable operation state currently. Here, the initial discharge temperature of the compressor is a discharge temperature of the compressor when the compressor operation frequency is a preset frequency. Further, the air conditioner may obtain the current discharge temperature of the compressor after a preset period of time. As an example, the preset duration may be 3 minutes. Thus, the air conditioner can determine the discharge temperature variation amount in combination with the initial discharge temperature of the compressor and the current discharge temperature of the compressor. Specifically, the discharge temperature variation may be determined by Δt=t Currently, the method is that -T Initial initiation , where Δt is the discharge temperature variation, T Currently, the method is that is the current discharge temperature of the compressor, and T Initial initiation is the initial discharge temperature of the compressor. With the adoption of the scheme, the difference value between the current exhaust temperature and the initial exhaust temperature can be used as the exhaust temperature variation, so that the exhaust temperature variation can be accurately acquired, and an accurate data basis is provided for the determination of the exhaust temperature correction quantity.
Optionally, S31, the air conditioner obtains an ambient temperature variation amount, including:
Under the condition that the operation frequency of the compressor is a preset frequency, the air conditioner obtains the initial environment temperature of the environment where the air conditioner is located.
After a preset time period, the air conditioner obtains the current environmental temperature of the environment where the air conditioner is located.
The air conditioner takes the difference between the current ambient temperature and the initial ambient temperature as the ambient temperature variation.
In the scheme, under the condition that the operation frequency of the compressor is the preset frequency, the air conditioner is determined to be in a stable operation state at present, and then the air conditioner can obtain the initial environment temperature of the environment in which the air conditioner is located. Here, the initial ambient temperature of the environment in which the air conditioner is located is the ambient temperature of the environment in which the air conditioner is located when the operation frequency of the compressor is a preset frequency. Further, the air conditioner may obtain the current ambient temperature of the environment in which the air conditioner is located after a preset period of time. As an example, the preset duration may be 3 minutes. Thus, the air conditioner can determine the change amount of the environmental temperature by combining the initial environmental temperature and the current environmental temperature of the environment in which the air conditioner is positioned. Specifically, the environmental temperature change amount may be determined by Δs=s Currently, the method is that -S Initial initiation , where Δs is the environmental temperature change amount, S Currently, the method is that is the current environmental temperature of the environment where the air conditioner is located, and S Initial initiation is the initial environmental temperature of the environment where the air conditioner is located. According to the scheme, the difference between the current ambient temperature and the initial ambient temperature can be used as the ambient temperature variation, so that the ambient temperature variation can be accurately acquired, and an accurate data basis is provided for determining the exhaust temperature correction quantity.
Optionally, after determining the detection information of the electronic expansion valve, the method further includes:
The air conditioner pushes detection information to a target user so that the target user knows the running state of the electronic expansion valve.
In the scheme, after the detection information of the electronic expansion valve is determined, in order to enable a target user to know the running state of the electronic expansion valve in time so as to make timely and effective countermeasures aiming at the running state, the air conditioner can be controlled to push the detection information to the target user. Here, the target user may be the highest priority user among home users or a maintenance person associated with the air conditioner. Specifically, the pushing mode of the detection information is not limited to text pushing, image pushing, lamplight pushing and the like. With this scheme, can make the target user in time know the running state of electronic expansion valve, help under the circumstances that electronic expansion valve breaks down, carry out timely effective maintenance to electronic expansion valve, reduce because electronic expansion valve is malfunctioning and to the adverse effect that air conditioner intelligent control caused.
Fig. 5 is a schematic diagram of an apparatus for detecting an electronic expansion valve according to an embodiment of the present disclosure, and in conjunction with fig. 5, an apparatus for detecting an electronic expansion valve according to an embodiment of the present disclosure includes an obtaining module 51, a first determining module 52, and a second determining module 53. The obtaining module 51 is configured to obtain an operation frequency of the air conditioner compressor, the first determining module 52 is configured to determine an opening degree variation amount of the electronic expansion valve and an exhaust temperature correction amount in a case where the operation frequency of the compressor is not lower than a preset frequency, and the second determining module 53 is configured to determine detection information of the electronic expansion valve according to the opening degree variation amount of the electronic expansion valve and the exhaust temperature correction amount.
The device for detecting the electronic expansion valve is used for obtaining the operating frequency of the air conditioner compressor, determining the opening change amount and the exhaust temperature correction amount of the electronic expansion valve under the condition that the operating frequency of the compressor is not lower than the preset frequency, and determining the detection information of the electronic expansion valve according to the opening change amount and the exhaust temperature correction amount of the electronic expansion valve. With this scheme, can combine the aperture variation and the exhaust temperature correction of electronic expansion valve, confirm the detection information of electronic expansion valve, avoid partial unusual condition to be ignored's problem, provide a more accurate electronic expansion valve fault detection scheme for the user.
Fig. 6 is a schematic diagram of another apparatus for detecting an electronic expansion valve according to an embodiment of the present disclosure, and in conjunction with fig. 6, an apparatus for detecting an electronic expansion valve according to an embodiment of the present disclosure includes a processor (processor) 100 and a memory (memory) 101. Optionally, the apparatus may further comprise a communication interface (Communication Interface) 102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via the bus 103. The communication interface 102 may be used for information transfer. Processor 100 may invoke logic instructions in memory 101 to perform the method for detecting an electronic expansion valve of the above-described embodiments.
Further, the logic instructions in the memory 101 described above may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand alone product.
The memory 101 is a computer readable storage medium that can be used to store a software program, a computer executable program, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing by running program instructions/modules stored in the memory 101, i.e., implements the method for detecting an electronic expansion valve in the above-described embodiments.
The memory 101 may include a storage program area that may store an operating system, application programs required for at least one function, and a storage data area that may store data created according to the use of the terminal device, etc. Further, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for detecting an electronic expansion valve.
The disclosed embodiments provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the above-described method for detecting an electronic expansion valve.
The computer readable storage medium may be a transitory computer readable storage medium or a non-transitory computer readable storage medium.
Embodiments of the present disclosure may be embodied in a software product stored on a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of a method according to embodiments of the present disclosure. The storage medium may be a non-transitory storage medium, including a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or may be a transitory storage medium.
The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (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 disclosure is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, when used in the present disclosure, the terms "comprises," "comprising," and/or variations thereof, mean that the recited features, integers, steps, operations, elements, and/or components are present, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising one..+ -." does not exclude the presence of additional identical elements in a process, method or apparatus comprising said element. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.
Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the embodiments disclosed herein, the disclosed methods, articles of manufacture (including but not limited to devices, apparatuses, etc.) may be practiced in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units may be merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form. The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to implement the present embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in 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, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown 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 description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (8)
1. A method for detecting an electronic expansion valve, comprising:
Obtaining the operating frequency of an air conditioner compressor;
Determining an opening variation amount and an exhaust temperature correction amount of the electronic expansion valve under the condition that the operation frequency of the compressor is not lower than a preset frequency;
determining detection information of the electronic expansion valve according to the opening variation of the electronic expansion valve and the exhaust temperature correction quantity;
the determining the detection information of the electronic expansion valve according to the opening variation of the electronic expansion valve and the exhaust temperature correction amount includes:
Determining that the detection information of the electronic expansion valve is a fault under the condition that the opening variation of the electronic expansion valve is smaller than a first opening threshold value and the exhaust temperature correction amount is smaller than a first temperature threshold value;
Determining that the detection information of the electronic expansion valve is normal under the condition that the opening variation of the electronic expansion valve is not lower than the first opening threshold and not higher than the second opening threshold;
determining that the detection information of the electronic expansion valve is a fault when the opening variation of the electronic expansion valve is greater than the second opening threshold and the exhaust temperature correction amount is greater than a second temperature threshold;
the determining an exhaust temperature correction amount includes:
obtaining exhaust temperature variation and ambient temperature variation;
And determining a difference between the exhaust gas temperature variation and the ambient temperature variation as the exhaust gas temperature correction amount.
2. The method of claim 1, wherein the determining the opening variation of the electronic expansion valve comprises:
obtaining an initial opening degree of the electronic expansion valve under the condition that the operation frequency of the compressor is a preset frequency;
After a preset time length, obtaining the current opening of the electronic expansion valve;
and determining the difference value between the current opening and the initial opening as the opening variation of the electronic expansion valve.
3. The method according to claim 1, characterized in that the obtaining of the exhaust gas temperature variation amount includes:
obtaining an initial discharge temperature of the compressor under the condition that the operation frequency of the compressor is a preset frequency;
after a preset time period, obtaining the current exhaust temperature of the compressor;
And taking the difference between the current exhaust temperature and the initial exhaust temperature as an exhaust temperature variation.
4. A method according to claim 3, wherein said obtaining an ambient temperature variation comprises:
under the condition that the operation frequency of the compressor is a preset frequency, obtaining the initial environment temperature of the environment where the air conditioner is located;
After a preset time length, obtaining the current environment temperature of the environment where the air conditioner is located;
and taking the difference value between the current ambient temperature and the initial ambient temperature as an ambient temperature variation.
5. The method of claim 1, wherein after determining the detection information of the electronic expansion valve, the method further comprises:
and pushing the detection information to a target user so that the target user knows the operating state of the electronic expansion valve.
6. An apparatus for detecting an electronic expansion valve, comprising:
An obtaining module configured to obtain an operating frequency of the air conditioner compressor;
A first determination module configured to determine an opening degree variation amount and an exhaust gas temperature correction amount of the electronic expansion valve in a case where an operation frequency of the compressor is not lower than a preset frequency;
a second determination module configured to determine detection information of the electronic expansion valve according to an opening change amount of the electronic expansion valve and the exhaust temperature correction amount;
the determining the detection information of the electronic expansion valve according to the opening variation of the electronic expansion valve and the exhaust temperature correction amount includes:
Determining that the detection information of the electronic expansion valve is a fault under the condition that the opening variation of the electronic expansion valve is smaller than a first opening threshold value and the exhaust temperature correction amount is smaller than a first temperature threshold value;
Determining that the detection information of the electronic expansion valve is normal under the condition that the opening variation of the electronic expansion valve is not lower than the first opening threshold and not higher than the second opening threshold;
determining that the detection information of the electronic expansion valve is a fault when the opening variation of the electronic expansion valve is greater than the second opening threshold and the exhaust temperature correction amount is greater than a second temperature threshold;
the determining an exhaust temperature correction amount includes:
obtaining exhaust temperature variation and ambient temperature variation;
And determining a difference between the exhaust gas temperature variation and the ambient temperature variation as the exhaust gas temperature correction amount.
7. An apparatus for detecting an electronic expansion valve comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for detecting an electronic expansion valve according to any of claims 1 to 5 when the program instructions are run.
8. A storage medium storing program instructions which, when executed, perform the method for detecting an electronic expansion valve according to any one of claims 1 to 5.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210661983.8A CN115111816B (en) | 2022-06-13 | 2022-06-13 | Method, device and storage medium for detecting electronic expansion valve |
| PCT/CN2023/075190 WO2023241071A1 (en) | 2022-06-13 | 2023-02-09 | Method and apparatus for performing detection on electronic expansion valve, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210661983.8A CN115111816B (en) | 2022-06-13 | 2022-06-13 | Method, device and storage medium for detecting electronic expansion valve |
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| Publication Number | Publication Date |
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| CN115111816A CN115111816A (en) | 2022-09-27 |
| CN115111816B true CN115111816B (en) | 2025-07-18 |
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| CN202210661983.8A Active CN115111816B (en) | 2022-06-13 | 2022-06-13 | Method, device and storage medium for detecting electronic expansion valve |
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| CN (1) | CN115111816B (en) |
| WO (1) | WO2023241071A1 (en) |
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| CN115111816B (en) * | 2022-06-13 | 2025-07-18 | 青岛海尔空调器有限总公司 | Method, device and storage medium for detecting electronic expansion valve |
| CN117309371B (en) * | 2023-11-30 | 2024-02-23 | 珠海格力电器股份有限公司 | Electronic expansion valve and fan module detection method of water source heat pump unit |
| CN119826412B (en) * | 2025-01-14 | 2026-01-20 | Tcl家用电器（合肥）有限公司 | Temperature control method, device, medium and equipment |
| CN120292770B (en) * | 2025-06-13 | 2025-09-12 | 珠海格力电器股份有限公司 | Correction method and device of electronic expansion valve, air-cooled chiller unit and storage medium |
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| CN104482638A (en) * | 2014-12-09 | 2015-04-01 | 广东美的制冷设备有限公司 | Air conditioner and fault detection method for electronic expansion valve of air conditioner |
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| JP2500518B2 (en) * | 1990-12-25 | 1996-05-29 | ダイキン工業株式会社 | Refrigeration system operation controller |
| JP3590499B2 (en) * | 1997-02-27 | 2004-11-17 | 三菱電機株式会社 | Air conditioner |
| JP5241872B2 (en) * | 2011-03-16 | 2013-07-17 | 三菱電機株式会社 | Refrigeration cycle equipment |
| CN106404371B (en) * | 2016-10-10 | 2019-03-08 | 广东美的暖通设备有限公司 | Electric expansion valve detection method and device, air-conditioning system |
| CN107219412A (en) * | 2017-07-28 | 2017-09-29 | 广东美的暖通设备有限公司 | Coil line sequence detection method, device and system and the air-conditioning system of electric expansion valve |
| CN111023433B (en) * | 2019-12-31 | 2021-10-22 | 宁波奥克斯电气股份有限公司 | A multi-line undercooled medium control method, device, storage medium and air conditioning system |
| CN111425996B (en) * | 2020-02-26 | 2022-11-22 | 青岛海尔空调电子有限公司 | Control method of air conditioner |
| CN111550904B (en) * | 2020-04-13 | 2021-10-15 | 宁波奥克斯电气股份有限公司 | Electronic expansion valve control method and device and air conditioner |
| CN113719978B (en) * | 2020-05-25 | 2022-09-16 | 广东美的制冷设备有限公司 | Control method and device of air conditioner and air conditioner |
| CN111664559B (en) * | 2020-06-28 | 2021-08-24 | 珠海拓芯科技有限公司 | Electronic expansion valve control method, device and air conditioner |
| CN113357746B (en) * | 2021-05-18 | 2022-11-18 | 青岛海尔空调器有限总公司 | Electronic expansion valve abnormity detection control method and device, air conditioner and storage medium |
| CN113587338B (en) * | 2021-06-28 | 2022-11-29 | 宁波奥克斯电气股份有限公司 | Compressor exhaust temperature control method and device and air conditioner |
| CN115111816B (en) * | 2022-06-13 | 2025-07-18 | 青岛海尔空调器有限总公司 | Method, device and storage medium for detecting electronic expansion valve |
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- 2023-02-09 WO PCT/CN2023/075190 patent/WO2023241071A1/en not_active Ceased
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| CN104482638A (en) * | 2014-12-09 | 2015-04-01 | 广东美的制冷设备有限公司 | Air conditioner and fault detection method for electronic expansion valve of air conditioner |
| CN108613335A (en) * | 2018-03-12 | 2018-10-02 | 珠海格力电器股份有限公司 | Fault detection method and device of air conditioner, storage medium and processor |
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| WO2023241071A1 (en) | 2023-12-21 |
| CN115111816A (en) | 2022-09-27 |
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