CN111998448A - Dehumidifier fault diagnosis method and system - Google Patents
Dehumidifier fault diagnosis method and system Download PDFInfo
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- CN111998448A CN111998448A CN202010902351.7A CN202010902351A CN111998448A CN 111998448 A CN111998448 A CN 111998448A CN 202010902351 A CN202010902351 A CN 202010902351A CN 111998448 A CN111998448 A CN 111998448A
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- dehumidifier
- dehumidification
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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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
- F24F11/62—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
Abstract
The invention discloses a dehumidifier fault diagnosis method and a dehumidifier fault diagnosis system, wherein the method comprises the following steps: periodically detecting a liquid level height change value in a water tank of the dehumidifier; calculating the dehumidification efficiency of the dehumidifier according to the detected liquid level height change value and the time period; acquiring the dehumidification efficiency of a plurality of continuous periods; analyzing and comparing the dehumidification efficiencies of a plurality of periods according to time sequence, and comparing the dehumidification efficiencies of the plurality of periods with preset dehumidification efficiency thresholds one by one; when the dehumidification efficiency of the plurality of periods continuously decreases and/or the dehumidification efficiency of the plurality of periods is smaller than the dehumidification efficiency threshold value, judging that the dehumidifier breaks down; otherwise, judging the dehumidifier to be normal. The method solves the problem that the dehumidifier in the prior art can generally run when in failure, so that the dehumidifier is difficult to be perceived by users, but the dehumidification effect, the noise and the like are affected, so that the use experience of the users is seriously affected.
Description
Technical Field
The invention relates to the technical field of dehumidifiers, in particular to a dehumidifier fault diagnosis method and a dehumidifier fault diagnosis system.
Background
The dehumidifier is also called dehumidifier, moisture absorber and dehumidifier, and is composed of compressor, heat exchanger, fan, water container, casing and controller, and its working principle is: the damp air is pumped into the machine by a fan, the moisture in the air is condensed into water drops through heat exchange, the treated dry air is discharged out of the machine, and the indoor humidity is reduced by circulation.
In recent years, with the continuous improvement of the living standard of people, the update of the consumption concept of people and the improvement of the health awareness degree of people, the dehumidifier is gradually expanded from the former commercial use to the household use and becomes one of the indispensable modern household electrical appliances of many families; the market prospect and market potential of dehumidifiers, as an industry closely related to human health and quality of life enhancement, are self-evident.
However, the dehumidifier in the prior art can generally run when a fault occurs, so that the dehumidifier is difficult to be perceived by a user, but the dehumidification effect, noise and the like are affected, so that the use experience of the user is seriously affected.
Therefore, the invention provides a method and a system for diagnosing the fault of the dehumidifier, which can carry out self-checking operation in the using process so as to automatically find fault information and fault types and remind a user of timely maintenance.
Disclosure of Invention
Aiming at the technical problems, the invention aims to solve the problem that the dehumidifier in the prior art can generally run when a fault occurs, so that the dehumidifier is difficult to be perceived by a user, but the dehumidification effect, the noise and the like are affected, so that the use experience of the user is seriously affected, thereby providing the fault diagnosis method and the fault diagnosis system for the dehumidifier, which can carry out self-checking operation in the use process so as to automatically find fault information and fault types and remind the user of timely maintenance.
In order to achieve the above object, the present invention provides a dehumidifier fault diagnosis method, including:
periodically detecting a liquid level height change value in a water tank of the dehumidifier;
calculating the dehumidification efficiency of the dehumidifier according to the detected liquid level height change value and the time period;
acquiring the dehumidification efficiency of a plurality of continuous periods;
analyzing and comparing the dehumidification efficiencies of a plurality of periods according to time sequence, and comparing the dehumidification efficiencies of the plurality of periods with preset dehumidification efficiency thresholds one by one; wherein the content of the first and second substances,
when the dehumidification efficiency of the plurality of periods continuously decreases and/or the dehumidification efficiency of the plurality of periods is smaller than the dehumidification efficiency threshold value, judging that the dehumidifier breaks down; otherwise, judging the dehumidifier to be normal.
Preferably, after the dehumidifier is judged to have a fault, the method further comprises:
acquiring the operating parameters of the dehumidifier;
and judging the fault type of the dehumidifier according to the operation parameters of the dehumidifier.
Preferably, the operating parameters of the dehumidifier include: working noise intensity, ambient temperature, and evaporator tube temperature.
Preferably, the fault types include at least: an air outlet blockage abnormality, a humidity sensor abnormality, a refrigerant abnormality, a compressor abnormality, and a filter blockage abnormality; wherein the content of the first and second substances,
when the fault type is that the air outlet is blocked abnormally, controlling to start the high-wind-gear operation of the dehumidifier and/or controlling the air deflector of the dehumidifier to reset;
and under the condition that the fault type is that the humidity sensor is abnormal, controlling the dehumidifier to continue dehumidifying, acquiring the current environment temperature to judge the current environment humidity, and adjusting and controlling the running state of the dehumidifier according to the current environment humidity.
Preferably, the calculation formula of the dehumidification efficiency of the dehumidifier is as follows:
wherein, the delta H is a liquid level height change value in one period; the T is a period value.
The invention also provides a dehumidifier fault diagnosis system, which comprises:
the water tank detection module is used for periodically detecting a liquid level height change value in a water tank of the dehumidifier;
the dehumidification efficiency calculation module is used for calculating the dehumidification efficiency of the dehumidifier according to the detected liquid level height change value and the time period;
the main control module is used for acquiring the continuous dehumidification efficiencies of a plurality of periods, analyzing and comparing the dehumidification efficiencies of the plurality of periods according to time sequence, and comparing the dehumidification efficiencies of the plurality of periods with a preset dehumidification efficiency threshold value one by one;
the fault judging module is used for judging that the dehumidifier breaks down when the dehumidification efficiency of the plurality of periods continuously decreases and/or the dehumidification efficiency of the plurality of periods is smaller than the dehumidification efficiency threshold value; otherwise, judging the dehumidifier to be normal.
Preferably, the system further comprises:
the dehumidifier detection module is used for acquiring the operating parameters of the dehumidifier;
and the fault type judging module is used for judging the fault type of the dehumidifier according to the operating parameters of the dehumidifier.
Preferably, the operating parameters of the dehumidifier acquired by the dehumidifier detection module include: working noise intensity, ambient temperature, and evaporator tube temperature.
Preferably, the fault types judged by the fault type judging module include air outlet blockage abnormity, humidity sensor abnormity, refrigerant abnormity, compressor abnormity and filter blockage abnormity; wherein the content of the first and second substances,
the main control module is also used for executing the following steps:
when the fault type is that the air outlet is blocked abnormally, controlling to start the high-wind-gear operation of the dehumidifier and/or controlling the air deflector of the dehumidifier to reset;
and under the condition that the fault type is that the humidity sensor is abnormal, controlling the dehumidifier to continue dehumidifying, acquiring the current environment temperature to judge the current environment humidity, and adjusting and controlling the running state of the dehumidifier according to the current environment humidity.
Preferably, the dehumidification efficiency calculation module applies the calculation formula as follows:
wherein, the delta H is a liquid level height change value in one period; the T is a period value.
According to the technical scheme, the dehumidifier fault diagnosis method and system provided by the invention have the beneficial effects that: the fault of the dehumidifier can be automatically diagnosed by analyzing and comparing the dehumidification efficiencies of a plurality of periods in time and comparing the dehumidification efficiencies of the plurality of periods with the preset dehumidification efficiency threshold value one by one, self-checking operation can be carried out, so that the fault of the dehumidifier which is difficult to be perceived by a user can be automatically found, normal operation of the dehumidifier is ensured, and the use experience of the user is improved.
Additional features and advantages of the invention will be set forth in the detailed description which follows; and the parts not involved in the invention are the same as or can be realized by the prior art.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a dehumidifier fault diagnosis method provided in a preferred embodiment of the present invention;
FIG. 2 is a flow chart of a dehumidifier fault diagnosis method provided in a preferred embodiment of the present invention;
fig. 3 is a block diagram of a dehumidifier fault diagnosis system according to a preferred embodiment of the present invention;
fig. 4 is a block diagram of a dehumidifier fault diagnosis system according to a preferred embodiment of the present invention.
Description of the reference numerals
1 water tank detection module and 2 dehumidification efficiency calculation modules
3 main control module 4 fault judgment module
5 dehumidifier detection module 6 fault type judgment module
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1 and 2, the present invention provides a dehumidifier fault diagnosis method, including:
periodically detecting a liquid level height change value in a water tank of the dehumidifier;
calculating the dehumidification efficiency of the dehumidifier according to the detected liquid level height change value and the time period;
acquiring the dehumidification efficiency of a plurality of continuous periods;
analyzing and comparing the dehumidification efficiencies of a plurality of periods according to time sequence, and comparing the dehumidification efficiencies of the plurality of periods with preset dehumidification efficiency thresholds one by one; wherein the content of the first and second substances,
when the dehumidification efficiency of the plurality of periods continuously decreases and/or the dehumidification efficiency of the plurality of periods is smaller than the dehumidification efficiency threshold value, judging that the dehumidifier breaks down; otherwise, judging the dehumidifier to be normal.
In the scheme, the dehumidification efficiencies of the dehumidifier in a plurality of continuous periods are obtained, and then whether a fault occurs is judged by analyzing the dehumidification efficiencies, because the dehumidification efficiencies (shown as dehumidification effects) of most of the dehumidifiers are obviously changed when the faults occur, generally, the dehumidification effects are poor, the invention is obtained to automatically diagnose the fault according to the principle, and generally, the dehumidification efficiencies in the plurality of continuous periods are analyzed and judged in order to further improve the judgment accuracy; wherein: when the dehumidification efficiency of the plurality of periods continuously decreases and/or the dehumidification efficiency of the plurality of periods is smaller than the dehumidification efficiency threshold, judging that the dehumidifier breaks down, wherein the judging logic can accurately self-diagnose the fault information of the dehumidifier, and is different from the conventional diagnosis method in the field, the conventional diagnosis method generally acquires the dehumidification efficiency, and then directly judges that the dehumidifier breaks down if the dehumidification efficiency is smaller than the dehumidification efficiency threshold, so that the method is too simple, and the diagnosis accuracy is low. The diagnosis logics of the invention are different, namely the dehumidification efficiencies of a plurality of periods are compared with the preset dehumidification efficiency threshold one by one, and the dehumidification efficiencies of the plurality of periods are compared with each other according to time, so that the judgment is carried out according to the result, and the judgment accuracy is ensured. And one side of the model misjudgment influences the experience of a user and the normal production work of a factory.
In a preferred embodiment of the present invention, after determining that the dehumidifier has a fault, the method further includes:
acquiring the operating parameters of the dehumidifier;
and judging the fault type of the dehumidifier according to the operation parameters of the dehumidifier.
The following partial examples are given by the following judgment logic for judging the basis of the fault type of the dehumidifier according to the operation parameters:
the dehumidifier is shut down quickly after being started and can be restarted after a long time, so that the dehumidification effect is poor; the compressor of the dehumidifier is a rotary compressor, the heat resistance is poor, the rotating speed of a fan motor is reduced, the air volume is reduced, namely the air volume flowing through a condenser is reduced, the exhaust pressure of the compressor is increased, the compressor is protected (stopped) by overheating, the temperature of the compressor can be reduced to be normal only by cooling for a long time, and therefore the compressor can be restarted after being cooled for a long time. So that it is judged that the compressor is abnormal;
the compressor and the fan are normal, but the dehumidification effect is poor, and the noise is high; when the dehumidifier is maintained, refrigerant is not filled according to the standard requirement, the filling amount is excessive, so that the noise of the compressor is increased due to liquid impact, and liquid drops in return air continue to evaporate in the return air pipe to frost the surface of the return air pipe.
The surface of the low-pressure pipe of the dehumidifier is frosted, and the dehumidification effect is poor; frosting the rear section of the capillary tube, finding oil stains at the interface of the capillary tube and the low-pressure tube, judging that the front section of the leakage capillary tube starts to be frosted when a fault occurs, and judging that the filter is blocked when no oil stains are found in the pipeline; the maintenance method comprises the steps of checking leakage, pressurizing and detecting leakage after welding maintenance, and filling a refrigerant; and (5) replacing the filter.
In a preferred embodiment of the present invention, the operation parameters of the dehumidifier include: working noise intensity, ambient temperature, and evaporator tube temperature.
In a preferred embodiment of the invention, the fault types include at least: an air outlet blockage abnormality, a humidity sensor abnormality, a refrigerant abnormality, a compressor abnormality, and a filter blockage abnormality; wherein the content of the first and second substances,
when the fault type is that the air outlet is blocked abnormally, controlling to start the high-wind-gear operation of the dehumidifier and/or controlling the air deflector of the dehumidifier to reset;
and under the condition that the fault type is that the humidity sensor is abnormal, controlling the dehumidifier to continue dehumidifying, acquiring the current environment temperature to judge the current environment humidity, and adjusting and controlling the running state of the dehumidifier according to the current environment humidity.
In the above scheme, some faults can be directly solved without immediate shutdown, and the shutdown also affects the normal production work of a factory and the use experience of a user, so that the method for realizing online solution for some faults comprises the following steps:
for the abnormal blockage of the air outlet, the high wind gear operation of the dehumidifier can be started and/or the air deflector of the dehumidifier is controlled to reset to solve the problem; the humidity sensor is abnormal, and the normal operation of the dehumidifier is not influenced, so that the solution needed is to obtain the current environment temperature to judge the current environment humidity and adjust and control the operation state of the dehumidifier according to the current environment humidity.
In a preferred embodiment of the present invention, the calculation formula of the dehumidification efficiency of the dehumidifier is:
wherein, the delta H is a liquid level height change value in one period; the T is a period value.
In the scheme, the dehumidification efficiency calculation formula provided by the invention can accurately embody the dehumidification efficiency of the dehumidifier, and the accuracy can be improved by judging the fault information of the dehumidifier according to the factor.
As shown in fig. 3 and 4, the present invention provides a dehumidifier fault diagnosis system, which includes:
the water tank detection module 1 is used for periodically detecting a liquid level height change value in a water tank of the dehumidifier;
the dehumidification efficiency calculation module 2 is used for calculating the dehumidification efficiency of the dehumidifier according to the detected liquid level height change value and the time period;
the main control module 3 is used for acquiring the continuous dehumidification efficiencies of a plurality of periods, analyzing and comparing the dehumidification efficiencies of the plurality of periods according to time sequence, and comparing the dehumidification efficiencies of the plurality of periods with preset dehumidification efficiency thresholds one by one;
the fault judgment module 4 is used for judging that the dehumidifier breaks down when the dehumidification efficiency of the plurality of periods continuously decreases and/or the dehumidification efficiency of the plurality of periods is smaller than the dehumidification efficiency threshold; otherwise, judging the dehumidifier to be normal.
In a preferred embodiment of the present invention, the system further comprises:
the dehumidifier detection module 5 is used for acquiring the operating parameters of the dehumidifier;
and the fault type judgment module 6 is used for judging the fault type of the dehumidifier according to the operation parameters of the dehumidifier.
In a preferred embodiment of the present invention, the operation parameters of the dehumidifier obtained by the dehumidifier detection module include: working noise intensity, ambient temperature, and evaporator tube temperature.
In a preferred embodiment of the present invention, the failure types determined by the failure type determining module 6 include an outlet blockage abnormality, a humidity sensor abnormality, a refrigerant abnormality, a compressor abnormality, and a filter blockage abnormality; wherein the content of the first and second substances,
the main control module 4 is further configured to perform the following steps:
when the fault type is that the air outlet is blocked abnormally, controlling to start the high-wind-gear operation of the dehumidifier and/or controlling the air deflector of the dehumidifier to reset;
and under the condition that the fault type is that the humidity sensor is abnormal, controlling the dehumidifier to continue dehumidifying, acquiring the current environment temperature to judge the current environment humidity, and adjusting and controlling the running state of the dehumidifier according to the current environment humidity.
In a preferred embodiment of the present invention, the dehumidification efficiency calculation module applies a calculation formula as follows:
wherein, the delta H is a liquid level height change value in one period; the T is a period value.
In summary, the dehumidifier fault diagnosis method and system provided by the invention overcome the problem that the dehumidifier in the prior art can generally run when a fault occurs, so that the dehumidifier is difficult to be perceived by a user, but the dehumidification effect, noise and the like are affected, so that the use experience of the user is seriously affected. The dehumidifier fault detection method can perform self-checking operation to automatically find the dehumidifier fault which is difficult to be perceived by a user, so that the normal operation of the dehumidifier is ensured, and the use experience of the user is improved.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. A dehumidifier fault diagnosis method is characterized by comprising the following steps:
periodically detecting a liquid level height change value in a water tank of the dehumidifier;
calculating the dehumidification efficiency of the dehumidifier according to the detected liquid level height change value and the time period;
acquiring the dehumidification efficiency of a plurality of continuous periods;
analyzing and comparing the dehumidification efficiencies of a plurality of periods according to time sequence, and comparing the dehumidification efficiencies of the plurality of periods with preset dehumidification efficiency thresholds one by one; wherein the content of the first and second substances,
when the dehumidification efficiency of the plurality of periods continuously decreases and/or the dehumidification efficiency of the plurality of periods is smaller than the dehumidification efficiency threshold value, judging that the dehumidifier breaks down; otherwise, judging the dehumidifier to be normal.
2. The dehumidifier fault diagnosis method according to claim 1, wherein after determining that the dehumidifier is faulty, the method further comprises:
acquiring the operating parameters of the dehumidifier;
and judging the fault type of the dehumidifier according to the operation parameters of the dehumidifier.
3. The dehumidifier fault diagnosis method of claim 2, wherein the dehumidifier operation parameters include: working noise intensity, ambient temperature, and evaporator tube temperature.
4. The dehumidifier fault diagnosis method of claim 1, wherein the fault types at least include: an air outlet blockage abnormality, a humidity sensor abnormality, a refrigerant abnormality, a compressor abnormality, and a filter blockage abnormality; wherein the content of the first and second substances,
when the fault type is that the air outlet is blocked abnormally, controlling to start the high-wind-gear operation of the dehumidifier and/or controlling the air deflector of the dehumidifier to reset;
and under the condition that the fault type is that the humidity sensor is abnormal, controlling the dehumidifier to continue dehumidifying, acquiring the current environment temperature to judge the current environment humidity, and adjusting and controlling the running state of the dehumidifier according to the current environment humidity.
5. The dehumidifier fault diagnosis method according to claim 1, wherein the calculation formula of the dehumidification efficiency of the dehumidifier is:
wherein, the delta H is a liquid level height change value in one period; the T is a period value.
6. A dehumidifier fault diagnosis system, the system comprising:
the water tank detection module is used for periodically detecting a liquid level height change value in a water tank of the dehumidifier;
the dehumidification efficiency calculation module is used for calculating the dehumidification efficiency of the dehumidifier according to the detected liquid level height change value and the time period;
the main control module is used for acquiring the continuous dehumidification efficiencies of a plurality of periods, analyzing and comparing the dehumidification efficiencies of the plurality of periods according to time sequence, and comparing the dehumidification efficiencies of the plurality of periods with a preset dehumidification efficiency threshold value one by one;
the fault judging module is used for judging that the dehumidifier breaks down when the dehumidification efficiency of the plurality of periods continuously decreases and/or the dehumidification efficiency of the plurality of periods is smaller than the dehumidification efficiency threshold value; otherwise, judging the dehumidifier to be normal.
7. The dehumidifier fault diagnosis system of claim 6, wherein said system further comprises:
the dehumidifier detection module is used for acquiring the operating parameters of the dehumidifier;
and the fault type judging module is used for judging the fault type of the dehumidifier according to the operating parameters of the dehumidifier.
8. The dehumidifier fault diagnosis system of claim 7, wherein the dehumidifier operating parameters obtained by the dehumidifier detection module include: working noise intensity, ambient temperature, and evaporator tube temperature.
9. The dehumidifier fault diagnosis system of claim 7, wherein the fault types determined by the fault type determination module include an outlet blockage abnormality, a humidity sensor abnormality, a refrigerant abnormality, a compressor abnormality, and a filter blockage abnormality; wherein the content of the first and second substances,
the main control module is also used for executing the following steps:
when the fault type is that the air outlet is blocked abnormally, controlling to start the high-wind-gear operation of the dehumidifier and/or controlling the air deflector of the dehumidifier to reset;
and under the condition that the fault type is that the humidity sensor is abnormal, controlling the dehumidifier to continue dehumidifying, acquiring the current environment temperature to judge the current environment humidity, and adjusting and controlling the running state of the dehumidifier according to the current environment humidity.
10. The dehumidifier fault diagnosis system of claim 6, wherein the dehumidification efficiency calculation module applies the calculation formula as follows:
wherein, the delta H is a liquid level height change value in one period; the T is a period value.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11821641B2 (en) | 2022-03-28 | 2023-11-21 | Haier Us Appliance Solutions, Inc. | Fault diagnosis method in a dehumidifier appliance |
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| US11821641B2 (en) | 2022-03-28 | 2023-11-21 | Haier Us Appliance Solutions, Inc. | Fault diagnosis method in a dehumidifier appliance |
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