CN116659068A - Method and device for detecting falling-off of exhaust gas sensor, air conditioner and storage medium - Google Patents
Method and device for detecting falling-off of exhaust gas sensor, air conditioner and storage medium Download PDFInfo
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- CN116659068A CN116659068A CN202310814185.9A CN202310814185A CN116659068A CN 116659068 A CN116659068 A CN 116659068A CN 202310814185 A CN202310814185 A CN 202310814185A CN 116659068 A CN116659068 A CN 116659068A
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- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000001514 detection method Methods 0.000 claims abstract description 37
- 230000001965 increasing effect Effects 0.000 claims description 14
- 239000003507 refrigerant Substances 0.000 claims description 12
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000013021 overheating Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
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Classifications
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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
- 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
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
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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
- 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
- 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
- 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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application relates to the technical field of air conditioners, and discloses a method for detecting falling of an exhaust sensor, which comprises the following steps: acquiring the current running frequency of a compressor in an air conditioner; under the condition that the current running frequency of the compressor meets the preset condition, acquiring a first valve opening of the electronic expansion valve and a first detection temperature detected by an exhaust sensor; and determining whether the exhaust gas sensor falls off according to the first valve opening and the first detection temperature. By using the valve opening of the electronic expansion valve and the detection temperature of the exhaust gas sensor under the condition that the operation frequency of the compressor meets the preset condition, whether the exhaust gas sensor falls off or not can be judged more accurately, so that the accuracy of determining whether the exhaust gas sensor falls off or not can be improved. The application also discloses a device for detecting the falling-off of the exhaust sensor, an air conditioner and a storage medium.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to a method and a device for detecting falling of an exhaust gas sensor, an air conditioner and a storage medium.
Background
The refrigerating and heating effects of the air conditioner are mainly achieved by means of a compressor. When the air conditioner compressor works normally, the exhaust temperature of the compressor is in a set temperature range. When the discharge temperature of the compressor is greater than the maximum value within the set temperature range, the compressor may be overheated or overloaded to be damaged, so that the air conditioner may not work normally. In this case, the discharge temperature of the compressor can be reduced to within the set discharge temperature range by increasing the valve opening of the electronic expansion valve that controls the flow rate of the refrigerant flowing into the compressor. When the discharge temperature of the compressor is less than the minimum value within the set temperature range, the air conditioner may not work normally. At this time, the valve opening of the electronic expansion valve is reduced, so that the discharge temperature of the compressor can be increased to within the set discharge temperature range. Therefore, an exhaust gas sensor is usually installed at the top of the compressor discharge pipe or cylinder to detect the exhaust gas temperature of the compressor. And under the condition that the exhaust temperature is not in the set range, the valve opening of the electronic expansion valve is adjusted according to the temperature detected by the exhaust sensor, so that the exhaust temperature of the compressor can be changed, and the air conditioner can work normally. However, the compressor can vibrate during operation, and the exhaust sensor is easily driven to vibrate and fall off. And the exhaust gas sensor cannot accurately detect the exhaust gas temperature of the compressor in the case of falling off. The valve opening of the electronic expansion valve cannot be accurately adjusted, so that the normal operation of the air conditioner cannot be ensured.
Currently, in order to determine whether an exhaust gas sensor is dropped, the related art determines whether the exhaust gas sensor is dropped by a difference between a detected temperature detected by the exhaust gas sensor and a set temperature. That is, if the difference between the detected temperature and the set temperature is smaller than the threshold value, it is determined that the exhaust gas sensor is not detached. However, when the compressor is operated, the ambient temperature in the compressor compartment gradually increases, and even if the exhaust gas actuator is detached, the difference between the detected temperature and the set temperature is small, and the exhaust gas sensor is easily misjudged to be detached when the exhaust gas sensor is detached. Therefore, the accuracy of determining whether the exhaust gas sensor falls off or not is low according to the difference between the detected temperature and the set temperature.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.
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 and a device for detecting the falling-off of an exhaust gas sensor, an air conditioner and a storage medium, so that the accuracy of determining whether the exhaust gas sensor falls off can be improved.
In some embodiments, the method for detecting the falling-off of the exhaust gas sensor is applied to an air conditioner, an electronic expansion valve and an exhaust gas sensor are arranged in the air conditioner, the electronic expansion valve is used for controlling the flow of the refrigerant entering a compressor, and the exhaust gas sensor is used for detecting the exhaust gas temperature of the compressor in the air conditioner, and the method comprises: acquiring the current running frequency of a compressor in an air conditioner; under the condition that the current running frequency of the compressor meets the preset condition, acquiring a first valve opening of the electronic expansion valve and a first detection temperature detected by an exhaust sensor; and determining whether the exhaust gas sensor falls off according to the first valve opening and the first detection temperature.
In some embodiments, the apparatus comprises: a processor and a memory storing program instructions configured to perform the method for detecting an exhaust gas sensor fallout when the program instructions are executed.
In some embodiments, the air conditioner includes: an air conditioner body; the device for detecting the falling-off of the exhaust gas sensor is mounted to the air conditioner body.
In some embodiments, the storage medium stores program instructions that, when executed, perform the method for detecting an exhaust gas sensor fallout.
The method and the device for detecting the falling of the exhaust gas sensor, the air conditioner and the storage medium provided by the embodiment of the disclosure can realize the following technical effects:
the method comprises the steps of obtaining the current operating frequency of a compressor in an air conditioner, and obtaining the valve opening of an electronic expansion valve and the detection temperature detected by an exhaust sensor under the condition that the current operating frequency meets the preset condition. And determining whether the exhaust gas sensor falls off based on the valve opening and the detected temperature. Since, in the case where the discharge temperature of the compressor is lowered, the valve opening degree of the electronic expansion valve for controlling the flow rate of the refrigerant into the compressor may be reduced and/or the operation frequency of the compressor may be increased. In contrast, in the case where the exhaust gas sensor falls off, the detection temperature detected by the exhaust gas sensor may be lowered. Therefore, by using the valve opening of the electronic expansion valve and the detected temperature of the exhaust gas sensor in the case where the operation frequency of the compressor satisfies the preset condition, whether the exhaust gas sensor falls off can be more accurately determined, and thus the accuracy of determining whether the exhaust gas sensor falls off can be improved.
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 illustration of a method for detecting an exhaust gas sensor fallout provided by an embodiment of the present disclosure;
FIG. 2 is a schematic illustration of another method for detecting an exhaust gas sensor fallout provided by an embodiment of the present disclosure;
FIG. 3 is a schematic illustration of another method for detecting an exhaust gas sensor fallout provided by an embodiment of the present disclosure;
FIG. 4 is a schematic illustration of another method for detecting an exhaust gas sensor fallout provided by an embodiment of the present disclosure;
FIG. 5 is a schematic illustration of an apparatus for detecting an exhaust gas sensor fallout provided by an embodiment of the present disclosure;
fig. 6 is a schematic structural view of an air conditioner according to 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, 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.
When the compressor in the air conditioner is in operation, the larger the flow rate of the refrigerant passing through the compressor is, the lower the suction temperature and the discharge temperature of the compressor are. And when the air conditioner compressor works normally, the exhaust temperature of the compressor is in a set temperature range. For example, the temperature is set in the range of 65℃to 90 ℃. Wherein the refrigerant flow rate is controlled by the valve opening of the electronic expansion valve. And the valve opening of the electronic expansion valve is adjusted according to the discharge temperature of the compressor. The temperature at the compressor discharge port is typically detected by providing a discharge sensor at the discharge port on the discharge pipe of the compressor, and the detected temperature at the discharge port is determined as the discharge temperature of the compressor. Therefore, the valve opening degree of the electronic expansion valve is actually adjusted according to the detected temperature detected by the exhaust gas sensor. Therefore, when the exhaust temperature detected by the exhaust sensor is abnormal, that is, the exhaust temperature is not within the set temperature range, the valve opening of the electronic expansion valve is adjusted, so that the exhaust temperature of the compressor can be adjusted, and the compressor can be protected from damage due to overheating or overload. Wherein the valve opening of the electronic expansion valve is increased with the increase of the detected temperature, and the decrease of the detected temperature is decreased. And when the exhaust gas sensor is not dropped, the detected temperature detected by the exhaust gas sensor is the exhaust gas temperature of the compressor. Therefore, in the case where the exhaust gas sensor does not fall off within the set time period, the difference between the detected temperatures obtained before and after the set time period will be small. The difference between the valve openings of the corresponding electronic expansion valves will also be small. When the exhaust sensor falls off, the detection temperature detected by the exhaust sensor is the ambient temperature in the press bin. While the temperature at the exhaust port in the press cabin is highest. Therefore, the temperature detected when the exhaust gas sensor falls off is reduced from the temperature detected when it does not fall off, and is lower than the set temperature. At the same time, the valve opening of the electronic expansion valve is reduced. The valve opening of the electronic expansion valve is reduced, so that the exhaust temperature of the compressor is increased, but the exhaust sensor only can detect the ambient temperature in the compressor bin because the exhaust sensor falls off, and therefore, the detection temperature of the exhaust sensor cannot be obviously increased. Therefore, in the case where the exhaust gas sensor falls off, the difference between the detected temperatures obtained before and after the set period of time will be small. However, the difference between the valve openings of the corresponding electronic expansion valves may be large. Therefore, the falling-off of the exhaust gas sensor is determined by the difference of the valve opening degrees obtained before and after the set time period being greater than the first threshold value, and the detected temperatures obtained before and after the set time period being both smaller than the set temperature, and the difference of the two detected temperatures being smaller than the second threshold value. Therefore, the falling-off condition of the exhaust gas sensor can be accurately determined.
Referring to fig. 1, an embodiment of the present disclosure provides a method for detecting falling of an exhaust sensor, which is applied to an air conditioner, wherein an electronic expansion valve and an exhaust sensor are disposed in the air conditioner, the electronic expansion valve is used for controlling a flow rate of a refrigerant entering a compressor, and the exhaust sensor is mounted at an exhaust port on an exhaust pipe of the compressor in the air conditioner. The exhaust gas sensor is used for detecting the exhaust gas temperature of a compressor in an air conditioner, and comprises:
step S101, the air conditioner obtains a current operation frequency of a compressor in the air conditioner.
Step S102, the air conditioner obtains a first valve opening degree of the electronic expansion valve and a first detection temperature detected by the exhaust gas sensor under the condition that the current operation frequency of the compressor meets the preset condition.
Step S103, the air conditioner determines whether the exhaust gas sensor falls off according to the first valve opening and the first detected temperature.
By adopting the method for detecting the falling of the exhaust gas sensor, provided by the embodiment of the disclosure, the current operating frequency of the compressor in the air conditioner is obtained, and under the condition that the current operating frequency meets the preset condition, the valve opening of the electronic expansion valve and the detection temperature detected by the exhaust gas sensor are obtained. And determining whether the exhaust gas sensor falls off based on the valve opening and the detected temperature. Since, in the case where the discharge temperature of the compressor is lowered, the valve opening degree of the electronic expansion valve for controlling the flow rate of the refrigerant into the compressor may be reduced and/or the operation frequency of the compressor may be increased. In contrast, in the case where the exhaust gas sensor falls off, the detection temperature detected by the exhaust gas sensor may be lowered. Therefore, by using the valve opening of the electronic expansion valve and the detected temperature of the exhaust gas sensor in the case where the operation frequency of the compressor satisfies the preset condition, whether the exhaust gas sensor falls off can be more accurately determined, and thus the accuracy of determining whether the exhaust gas sensor falls off can be improved.
Further, the preset condition is that the current running frequency of the compressor is greater than or equal to the set frequency and lasts for a second set duration. The second set duration is any value within 3min or more and 10min or less. The set frequency is any value within 40Hz or more and 60Hz or less. When the operating frequency of the compressor is greater than or equal to the set frequency, the generated discharge gas temperature may be higher than the maximum value in the set temperature range. The set temperature range is a temperature range in which the exhaust temperature of the compressor is in when the air conditioner is in normal operation. In the case where the time period during which the compressor is operated at the operation frequency is longer than or equal to the second set time period, the compressor may be damaged by continuous overheat or continuous overload. At this time, it is necessary to adjust the valve opening of the electronic expansion valve by using the exact discharge temperature of the compressor detected by the discharge sensor, thereby maintaining the discharge temperature of the compressor within a set temperature range. Therefore, in the case where the current operating frequency of the compressor is greater than or equal to the set frequency, it is necessary to determine whether the discharge gas sensor falls off. In this way, only when the operating frequency of the compressor is greater than or equal to the set frequency, it is determined whether the exhaust gas sensor falls off, and the number of times of determining whether the exhaust gas sensor falls off can be reduced. Thereby enabling a reduction in energy consumption.
Further, determining whether the exhaust gas sensor is dropped according to the first valve opening and the first detected temperature includes: and starting timing when the first valve opening and the first detection temperature are acquired, and acquiring a target duration. And under the condition that the target duration reaches the first set duration, acquiring a second valve opening of the electronic expansion valve and a second detection temperature of the exhaust gas sensor. And determining whether the exhaust gas sensor falls off according to the first valve opening, the second valve opening, the first detection temperature and the second detection temperature. The first set duration is any value within 30s or more and 120s or less. Since the difference between the detected temperatures obtained before and after the first set time period is small in the case where the exhaust gas sensor does not fall off within the first set time period. The difference between the valve openings of the corresponding electronic expansion valves will also be small. When the exhaust sensor falls off, the detection temperature detected by the exhaust sensor is the ambient temperature in the press bin. While the temperature at the exhaust port in the press cabin is highest. Therefore, the temperature detected when the exhaust gas sensor falls off is reduced from the temperature detected when it does not fall off, and is lower than the set temperature. At the same time, the valve opening of the electronic expansion valve is reduced. The valve opening of the electronic expansion valve is reduced, so that the exhaust temperature of the compressor is increased, but the exhaust sensor only can detect the ambient temperature in the compressor bin because the exhaust sensor falls off, and therefore, the detection temperature of the exhaust sensor cannot be obviously increased. Therefore, in the case where the exhaust gas sensor falls off, the difference between the detected temperatures obtained before and after the first set period of time will be small. However, the difference between the valve openings of the corresponding electronic expansion valves may be large. Therefore, the falling-off condition of the exhaust gas sensor can be accurately determined through the valve opening degrees acquired before and after the set time period and the detection temperatures acquired before and after the set time period.
Further, determining whether the exhaust gas sensor falls off according to the first valve opening, the second valve opening, the first detected temperature, and the second detected temperature, includes: and subtracting the second valve opening from the first valve opening to obtain a first difference, and calculating the absolute value of the difference between the first detected temperature and the second detected temperature to obtain a second difference. And determining that the exhaust gas sensor falls off under the condition that the first difference value is larger than a first threshold value, the second difference value is smaller than a second threshold value and both the first detection temperature and the second detection temperature are smaller than the set temperature. Wherein the first threshold is any value within 15b or greater and 40b or less. The second threshold is any value within 1.5 ℃ or higher and 4 ℃ or lower. Since, in the case where the exhaust gas sensor falls off, the difference between the detected temperatures obtained before and after the first set period of time is small. However, the difference between the valve openings of the corresponding electronic expansion valves may be large. Therefore, the exhaust gas sensor is determined to fall off under the conditions that the difference of the valve opening degrees acquired before and after the first set time period is larger than the first threshold value, the detected temperatures acquired before and after the set time period are smaller than the set temperature, and the difference of the two detected temperatures is smaller than the second threshold value. Therefore, the falling-off condition of the exhaust gas sensor can be accurately determined.
Optionally, after determining whether the exhaust gas sensor is detached, the method for detecting detachment of the exhaust gas sensor further includes: when the exhaust sensor falls off, the valve opening of the electronic expansion valve is increased to the set valve opening; wherein the set valve opening is larger than the second valve opening. When the discharge sensor falls off, the valve opening of the electronic expansion valve is adjusted to a set valve opening, and the flow rate of the refrigerant passing through the compressor is increased. Thereby enabling the discharge temperature of the compressor to be in a set temperature range, and protecting the compressor from damage due to overheating or overload. Therefore, under the conditions that the exhaust sensor falls off and the running frequency of the compressor is higher than the set frequency, the air conditioner can still perform refrigeration and heating, and the user experience is improved.
As shown in conjunction with fig. 2, an embodiment of the present disclosure provides another method for detecting an exhaust gas sensor falling off, applied to an air conditioner, including:
in step S201, the air conditioner obtains a current operating frequency of a compressor in the air conditioner.
In step S202, the air conditioner obtains a first valve opening of the electronic expansion valve and a first detection temperature detected by the exhaust gas sensor when a current operation frequency of the compressor satisfies a preset condition.
In step S203, the air conditioner starts timing when the first valve opening and the first detected temperature are acquired, and the target time length is obtained.
Step S204, the air conditioner obtains a second valve opening of the electronic expansion valve and a second detection temperature of the exhaust sensor under the condition that the target duration reaches the first set duration.
In step S205, the air conditioner determines whether the exhaust gas sensor falls off according to the first valve opening, the second valve opening, the first detected temperature, and the second detected temperature.
In step S206, when the exhaust gas sensor falls off, the air conditioner increases the valve opening of the electronic expansion valve to the set valve opening. Wherein the set valve opening is larger than the second valve opening.
By adopting the method for detecting the falling of the exhaust gas sensor, which is provided by the embodiment of the disclosure, under the condition that the operation frequency of the compressor meets the preset condition, whether the exhaust gas sensor falls off or not can be more accurately judged by utilizing the valve opening of the electronic expansion valve and the detection temperature of the exhaust gas sensor, so that the accuracy of determining whether the exhaust gas sensor falls off or not can be improved. When the discharge sensor is disengaged, the valve opening of the electronic expansion valve is adjusted to a set valve opening, and the flow rate of the refrigerant passing through the compressor is increased. Thereby enabling the discharge temperature of the compressor to be in a set temperature range, and protecting the compressor from damage due to overheating or overload. Therefore, under the conditions that the exhaust sensor falls off and the running frequency of the compressor is higher than the set frequency, the air conditioner can still perform refrigeration and heating, and the user experience is improved.
In some embodiments, the first set period of time is 100s. The second set time period is 3min. The frequency was set to 50Hz. The first threshold is 40b. The second threshold is 3 ℃. The temperature was set at 65 ℃. The current operating frequency of the compressor in the air conditioner is 65Hz, the operating frequency is larger than the set frequency, and the compressor is continuously operated for 3min in a second set period. The current first valve opening degree of the electronic expansion valve is 200b and the first detection temperature detected by the exhaust gas sensor is 45 c. Then, the second valve opening of the electronic expansion valve after 100s was obtained as 150b. Wherein the valve opening is set to be any value within 300b or more and 350b or less. The second detected temperature detected by the exhaust gas sensor is 43 ℃. For example, the valve opening is set to 300b. Since the value obtained by subtracting the second valve opening 150b from the first valve opening 200b is 50b. That is, the difference between the first valve opening and the second valve opening is greater than the first threshold, and the first valve opening is greater than the second valve opening. Since the value of the first detected temperature 45 ℃ minus the second detected temperature 43 ℃ is 2 ℃. That is, the absolute value of the difference between the first detected temperature and the second detected temperature is smaller than the second threshold, and both the first detected temperature and the second detected temperature are smaller than the set temperature. Therefore, it is determined that the exhaust gas sensor has fallen off at this time. When the exhaust gas sensor falls off, the valve opening of the electronic expansion valve is increased to 300b.
Optionally, after determining whether the exhaust gas sensor is detached, the method for detecting detachment of the exhaust gas sensor further includes: under the condition that the exhaust sensor falls off, the running frequency of the compressor in the air conditioner is reduced to a set frequency; wherein the set frequency is less than the current operating frequency of the compressor. In this way, when the exhaust gas sensor falls off, the operating frequency of the compressor is reduced to the set frequency, so that the exhaust gas temperature of the compressor can be within the set temperature range, and the compressor can be protected from damage due to overheating or overload. Therefore, under the condition that the exhaust sensor falls off, the air conditioner can still perform refrigeration and heating, and the user experience is improved.
As shown in conjunction with fig. 3, an embodiment of the present disclosure provides another method for detecting an exhaust gas sensor falling off, applied to an air conditioner, including:
in step S301, the air conditioner obtains the current operating frequency of the compressor in the air conditioner.
In step S302, the air conditioner obtains a first valve opening of the electronic expansion valve and a first detection temperature detected by the exhaust gas sensor when a current operation frequency of the compressor satisfies a preset condition.
In step S303, the air conditioner determines whether the exhaust gas sensor falls off according to the first valve opening and the first detected temperature.
Step S304, the air conditioner reduces the running frequency of a compressor in the air conditioner to a set frequency under the condition that an exhaust sensor falls off; wherein the set frequency is less than the current operating frequency of the compressor.
By adopting the method for detecting the falling of the exhaust gas sensor, which is provided by the embodiment of the disclosure, under the condition that the operation frequency of the compressor meets the preset condition, whether the exhaust gas sensor falls off or not can be more accurately judged by utilizing the valve opening of the electronic expansion valve and the detection temperature of the exhaust gas sensor, so that the accuracy of determining whether the exhaust gas sensor falls off or not can be improved. In addition, when the exhaust gas sensor falls off, the operating frequency of the compressor is reduced to the set frequency, so that the exhaust gas temperature of the compressor can be within the set temperature range, and the compressor can be protected from damage caused by overheating or overload. Therefore, under the condition that the exhaust sensor falls off, the air conditioner can still perform refrigeration and heating, and the user experience is improved.
In some embodiments, the set frequency is any value greater than or equal to 30Hz and less than 40 Hz. For example, the frequency is set to 35Hz. The current operating frequency of the compressor in the air conditioner is obtained to be 65Hz. And under the condition that the exhaust gas sensor falls off, the running frequency of the compressor in the air conditioner is reduced to 35Hz.
Optionally, after determining whether the exhaust gas sensor is detached, the method for detecting detachment of the exhaust gas sensor further includes: and under the condition that the exhaust sensor falls off, sending prompt information to a preset terminal. Therefore, the user is reminded by sending the prompt information, so that the user can timely know that the exhaust gas sensor is in a falling state.
As shown in connection with fig. 4, an embodiment of the present disclosure provides another method for detecting an exhaust gas sensor falling off, which is applied to an air conditioner, including:
in step S401, the air conditioner obtains a current operating frequency of a compressor in the air conditioner.
In step S402, the air conditioner obtains a first valve opening of the electronic expansion valve and a first detection temperature detected by the exhaust gas sensor when a current operation frequency of the compressor satisfies a preset condition.
In step S403, the air conditioner determines whether the exhaust gas sensor falls off according to the first valve opening and the first detected temperature.
Step S404, the air conditioner sends prompt information to a preset terminal under the condition that the exhaust sensor falls off.
By adopting the method for detecting the falling of the exhaust gas sensor, which is provided by the embodiment of the disclosure, under the condition that the operation frequency of the compressor meets the preset condition, whether the exhaust gas sensor falls off or not can be more accurately judged by utilizing the valve opening of the electronic expansion valve and the detection temperature of the exhaust gas sensor, so that the accuracy of determining whether the exhaust gas sensor falls off or not can be improved. And under the condition that the exhaust sensor falls off, a prompt message is sent to a preset terminal. Therefore, the user is reminded by sending the prompt information, so that the user can timely know that the exhaust gas sensor is in a falling state.
In some embodiments, the preset terminal comprises a smart phone, tablet, smart watch, computer, or the like. For example, the preset terminal is a smart phone. The prompt information is' alarm! Alert-! Air conditioner A exhaust sensor drop ≡! Please repair in time-! ".
Optionally, after determining whether the exhaust gas sensor is detached, the method for detecting detachment of the exhaust gas sensor further includes: under the condition that the exhaust sensor falls off, the air conditioner is triggered to alarm. Therefore, the air conditioner alarms to prompt the user, so that the user can timely know that the exhaust sensor is in a falling state.
Further, be provided with bee calling organ on the air conditioner, trigger the air conditioner and report to the police, include: triggering the buzzer sounds an alarm.
As shown in connection with fig. 5, an embodiment of the present disclosure provides an apparatus 1 for detecting an exhaust gas sensor drop, including a processor (processor) 11 and a memory (memory) 12. Optionally, the apparatus may further comprise a communication interface (communication interface) 13 and a bus 14. The processor 11, the communication interface 13 and the memory 12 may communicate with each other via the bus 14. The communication interface 13 may be used for information transmission. Processor 11 may invoke logic instructions in memory 12 to perform the method for detecting an exhaust gas sensor fallout of the above-described embodiments.
Further, the logic instructions in the memory 12 described above may be implemented in the form of software functional units and stored in a computer readable storage medium when sold or used as a stand alone product.
The memory 12 serves as a computer readable storage medium for storing 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 11 executes functional applications and data processing by executing program instructions/modules stored in the memory 12, i.e., implements the method for detecting the fall-off of the exhaust gas sensor in the above-described embodiment.
Memory 12 may include a storage program area that may store an operating system, at least one application program required for functionality, and a storage data area; the storage data area may store data created according to the use of the terminal device, etc. In addition, the memory 12 may include high-speed random access memory, and may also include nonvolatile memory.
As shown in conjunction with fig. 6, an embodiment of the present disclosure provides an air conditioner 2, including: an air conditioner body, an exhaust gas sensor, an electronic expansion valve, and the device 1 for detecting falling-off of the exhaust gas sensor. The exhaust gas sensor is used for detecting the exhaust gas temperature of the compressor in the air conditioner. The electronic expansion valve is used to control the flow of refrigerant into the compressor. The device 1 for detecting the falling-off of the exhaust gas sensor is mounted to an air conditioner body. The mounting relationship described herein is not limited to being placed inside the air conditioner, but also includes mounting connections with other components of the air conditioner, including but not limited to physical connections, electrical connections, or signal transmission connections, etc. It will be appreciated by those skilled in the art that the device 1 for detecting the falling-off of an exhaust gas sensor may be adapted to a viable air conditioning body, thereby realizing other viable embodiments.
The disclosed embodiments provide a storage medium storing program instructions that, when executed, perform the above-described method for detecting an exhaust gas sensor fallout.
The 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. And the aforementioned storage medium may be a non-transitory storage medium including: a plurality of media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a random access memory (RAM, randomAccessMemory), a magnetic disk, or an optical disk, or 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 other like elements in a process, method or apparatus comprising such elements. 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 (10)
1. A method for detecting a drop of an exhaust gas sensor, which is applied to an air conditioner, wherein an electronic expansion valve and an exhaust gas sensor are arranged in the air conditioner, the exhaust gas sensor is used for detecting the exhaust gas temperature of a compressor in the air conditioner, and the electronic expansion valve is used for controlling the flow of refrigerant entering the compressor, and the method comprises:
acquiring the current running frequency of a compressor in an air conditioner;
under the condition that the current running frequency of the compressor meets the preset condition, acquiring a first valve opening of the electronic expansion valve and a first detection temperature detected by an exhaust sensor;
and determining whether the exhaust gas sensor falls off according to the first valve opening and the first detection temperature.
2. The method of claim 1, wherein determining whether the exhaust gas sensor is shed based on the first valve opening and the first detected temperature comprises:
starting timing when the first valve opening and the first detection temperature are acquired, and acquiring target duration;
acquiring a second valve opening of the electronic expansion valve and a second detection temperature of the exhaust sensor under the condition that the target duration reaches the first set duration;
and determining whether the exhaust gas sensor falls off according to the first valve opening, the second valve opening, the first detection temperature and the second detection temperature.
3. The method of claim 2, wherein determining whether the exhaust gas sensor is shed based on the first valve opening, the second valve opening, the first detected temperature, and the second detected temperature comprises:
subtracting the second valve opening from the first valve opening to obtain a first difference, and calculating the absolute value of the difference between the first detected temperature and the second detected temperature to obtain a second difference;
and determining that the exhaust gas sensor falls off under the condition that the first difference value is larger than a first threshold value, the second difference value is smaller than a second threshold value and both the first detection temperature and the second detection temperature are smaller than the set temperature.
4. A method according to claim 2 or 3, wherein after determining whether the exhaust gas sensor is detached, further comprising:
when the exhaust sensor falls off, the valve opening of the electronic expansion valve is increased to the set valve opening; wherein the set valve opening is larger than the second valve opening.
5. A method according to any one of claims 1 to 3, wherein after determining whether the exhaust gas sensor is detached, further comprising:
under the condition that the exhaust sensor falls off, the running frequency of the compressor in the air conditioner is reduced to a set frequency; wherein the set frequency is less than the current operating frequency of the compressor.
6. A method according to any one of claims 1 to 3, wherein after determining whether the exhaust gas sensor is detached, further comprising:
and under the condition that the exhaust sensor falls off, sending prompt information to a preset terminal.
7. A method according to any one of claims 1 to 3, wherein after determining whether the exhaust gas sensor is detached, further comprising:
under the condition that the exhaust sensor falls off, the air conditioner is triggered to alarm.
8. An apparatus for detecting an exhaust gas sensor fall-out comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for detecting an exhaust gas sensor fall-out of any of claims 1 to 7 when the program instructions are executed.
9. An air conditioner, comprising:
an air conditioner body;
the exhaust sensor is used for detecting the exhaust temperature of the compressor in the air conditioner;
an electronic expansion valve for controlling the flow of refrigerant into the compressor;
the apparatus for detecting falling off of an exhaust gas sensor according to claim 8, being mounted to the air conditioner body.
10. A storage medium storing program instructions which, when executed, perform the method for detecting an exhaust gas sensor fallout of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310814185.9A CN116659068A (en) | 2023-07-04 | 2023-07-04 | Method and device for detecting falling-off of exhaust gas sensor, air conditioner and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310814185.9A CN116659068A (en) | 2023-07-04 | 2023-07-04 | Method and device for detecting falling-off of exhaust gas sensor, air conditioner and storage medium |
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| CN116659068A true CN116659068A (en) | 2023-08-29 |
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| CN202310814185.9A Pending CN116659068A (en) | 2023-07-04 | 2023-07-04 | Method and device for detecting falling-off of exhaust gas sensor, air conditioner and storage medium |
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| CN (1) | CN116659068A (en) |
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- 2023-07-04 CN CN202310814185.9A patent/CN116659068A/en active Pending
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