CN113587374A - Self-checking method and device of refrigeration equipment and refrigeration equipment - Google Patents
Self-checking method and device of refrigeration equipment and refrigeration equipment Download PDFInfo
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- CN113587374A CN113587374A CN202110855926.9A CN202110855926A CN113587374A CN 113587374 A CN113587374 A CN 113587374A CN 202110855926 A CN202110855926 A CN 202110855926A CN 113587374 A CN113587374 A CN 113587374A
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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
- F24F11/49—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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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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
- F24F11/88—Electrical aspects, e.g. circuits
Abstract
The self-checking method of the refrigeration equipment comprises the steps of obtaining the flow direction of a refrigerant when the refrigeration equipment runs, determining the self-checking sequence of each load in the refrigeration equipment according to the flow direction of the refrigerant when the refrigeration equipment runs, and sequentially carrying out self-checking according to the self-checking sequence of each load. The sequence of self-checking in this application is the sequencing of following system running state, and laminating unit actual operation consequently feedback out of the problem of unit actual operation more accurately at the self-checking in-process.
Description
Technical Field
The application belongs to the technical field of refrigeration equipment, and particularly relates to a self-checking method and device of refrigeration equipment and the refrigeration equipment.
Background
With the continuous progress of science and technology, the air conditioning system is continuously developing towards intellectualization with the increasingly innovative technology and the improvement of the taste of customers. When the air conditioner is required by customers for after-sale maintenance, after-sale personnel cannot quickly identify the failure reason and the working state of the air conditioner and can only manually perform comprehensive detection on the air conditioner, so that the waste of resources such as manpower, material resources and the like is caused, and the customer satisfaction rate is low; in addition, for manufacturers, to ensure the qualified rate of their products when they leave the factory, the functions of the air conditioning unit need to be comprehensively checked, and the comprehensive checking is also completed manually, so that the product quality cannot be ensured well and quickly.
In the related art, a power-on self-checking function is set in an air conditioner, a self-checking key is pressed under the condition that the air conditioner is powered on, so that the air conditioner enters a self-checking mode, at the moment, the air conditioner outputs all load information such as a display screen, a fan, a compressor, temperature signals and the like at intervals according to a preset self-checking sequence of each load, and when the air conditioner exits the self-checking mode, all input/output feedback information is collected. In the self-checking process, the preset self-checking sequence is set randomly or according to the sequence with easy failure, and the actual running state of the air conditioner is separated, so that the accuracy of the self-checking result is low.
Disclosure of Invention
In order to overcome the problem that the self-checking result accuracy is low due to the fact that the traditional flow of self-checking according to the refrigeration equipment and the load according to the preset self-checking sequence is separated from the actual running state of the refrigeration equipment to at least a certain extent, the self-checking method and device of the refrigeration equipment and the refrigeration equipment are provided.
In a first aspect, the present application provides a self-test method for a refrigeration apparatus, comprising:
acquiring the flow direction of a refrigerant when the refrigeration equipment operates;
determining the self-checking sequence of each load in the refrigeration equipment according to the flow direction of a refrigerant when the refrigeration equipment operates;
and sequentially carrying out self-checking according to the self-checking sequence of each load.
Further, after determining the self-checking sequence of each load in the refrigeration equipment, the method further includes:
and setting the fixed time of the corresponding load starting self-checking according to the function of the load.
Further, the load includes a non-sensor load, and the self-checking of the non-sensor load includes:
setting an opening state acquisition frequency, opening state continuous acquisition times and an opening state passing time threshold;
when the fixed time of the load opening self-checking is reached, detecting corresponding load opening information according to the opening state acquisition frequency and the opening state continuous acquisition times;
and if the corresponding load information meets the number of times of the qualified criterion of the corresponding load in the opening state reaches the threshold value of the passing number of times of the opening state, judging that the opening state of the corresponding load is normal, otherwise, judging that the opening state of the corresponding load is abnormal.
Further, the performing self-test on the non-sensor load further includes:
setting an off-state acquisition frequency, an off-state continuous acquisition frequency and an off-state passing frequency threshold;
after the self-checking of the opening state is finished, detecting corresponding load information according to the closing state acquisition frequency and the closing state continuous acquisition times;
and if the corresponding load information meets the times of the qualified criteria of the corresponding load in the closed state, the corresponding load is judged to be normal, otherwise, the corresponding load is judged to be abnormal.
Further, the method also comprises the following steps:
and displaying corresponding load self-checking states, wherein the self-checking states comprise normal load opening state, abnormal load opening state, normal load closing state and abnormal load closing state.
Further, the open state corresponds to a load qualification criterion, including:
the current of the unit is in the range of 4A-10A or 0.5A-5A.
Further, the closed state corresponds to a load qualification criterion, including:
the current of the unit is in the range of 0A-0.5A.
Further, the load includes a sensor load, and performing a self-test on the sensor load includes:
setting continuous acquisition time;
and judging that the sensor is normal if the circuit where the sensor is located is not open or short-circuited within the continuous acquisition time, otherwise, judging that the sensor is abnormal.
Further, the sensor includes:
temperature sensors and pressure sensors.
Further, the method also comprises the following steps:
when a certain load is subjected to self-checking, the running states of other loads are controlled to be kept unchanged.
Further, the refrigeration plant includes air conditioning unit, air conditioning unit includes electronic expansion valve, electric heater, centrifugal fan, compressor, axial fan and sensor, according to each load self-checking order in the refrigeration plant is confirmed to the flow direction of refrigerant when refrigeration plant operates, include:
and self-checking the electronic expansion valve, the electric heater, the centrifugal fan, the compressor, the axial flow fan and the sensor in sequence.
Further, the method also comprises the following steps:
and respectively carrying out self-checking on the low-grade state and the high-grade state of the centrifugal fan.
Further, the method also comprises the following steps:
and respectively carrying out self-checking on the low-grade state and the high-grade state of the axial flow fan.
In a second aspect, the present application provides a self-test apparatus for a refrigeration device, including:
the acquisition module is used for acquiring the flow direction of a refrigerant when the refrigeration equipment runs;
the determining module is used for determining the self-checking sequence of each load in the refrigeration equipment according to the flow direction of a refrigerant when the refrigeration equipment runs;
and the self-checking module is used for sequentially carrying out self-checking according to the self-checking sequence of each load.
In a third aspect, the present application provides a refrigeration apparatus comprising:
the self-inspection device of the refrigeration equipment as described in the second aspect.
Further, the refrigeration plant includes an air conditioning unit, and the air conditioning unit includes:
the system comprises an electronic expansion valve, an electric heater, a centrifugal fan, a compressor, an axial flow fan and a sensor;
the self-checking device of the refrigeration equipment controls the electronic expansion valve, the electric heater, the centrifugal fan, the compressor, the axial flow fan and the sensor to carry out self-checking in sequence.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
the self-checking method of the refrigeration equipment comprises the steps of obtaining the flow direction of a refrigerant when the refrigeration equipment runs, determining the self-checking sequence of each load in the refrigeration equipment according to the flow direction of the refrigerant when the refrigeration equipment runs, and sequentially carrying out self-checking according to the self-checking sequence of each load.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a flowchart of a self-test method of a refrigeration apparatus according to an embodiment of the present disclosure.
Fig. 2 is a flowchart of a self-test method of a refrigeration apparatus according to another embodiment of the present application.
Fig. 3 is a functional block diagram of a self-inspection device of a refrigeration apparatus according to an embodiment of the present application.
Fig. 4 is a functional structure diagram of an air conditioning unit according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a flowchart of a self-test method of a refrigeration apparatus according to an embodiment of the present application, and as shown in fig. 1, the self-test method of the refrigeration apparatus includes:
s11: acquiring the flow direction of a refrigerant when the refrigeration equipment operates;
s12: determining the self-checking sequence of each load in the refrigeration equipment according to the flow direction of a refrigerant when the refrigeration equipment operates;
s13: and sequentially carrying out self-checking according to the self-checking sequence of each load.
When the traditional air conditioning unit is subjected to power-on self-test, all load information such as a display screen, a fan, a compressor, temperature signals and the like is sequentially output at intervals according to a preset self-test sequence of each load, and all input/output feedback information can be collected while the traditional air conditioning unit exits from a self-test mode. In the self-checking process, the preset self-checking sequence is set randomly or according to the sequence with easy failure, and the actual running state of the air conditioner is separated, so that the accuracy of the self-checking result is low.
In this embodiment, the self-checking method of the refrigeration equipment includes obtaining a flow direction of a refrigerant when the refrigeration equipment operates, determining a self-checking sequence of each load in the refrigeration equipment according to the flow direction of the refrigerant when the refrigeration equipment operates, and performing self-checking in sequence according to the self-checking sequence of each load, wherein the self-checking sequence is ordered according to an operation state of a system and is attached to actual operation of a unit, so that the problem of actual operation of the unit is fed back more accurately in a self-checking process.
An embodiment of the present invention provides another self-checking method for a refrigeration device, as shown in a flowchart in fig. 2, the self-checking method for a refrigeration device includes:
s21: acquiring the flow direction of a refrigerant when the refrigeration equipment operates;
s22: determining the self-checking sequence of each load in the refrigeration equipment according to the flow direction of a refrigerant when the refrigeration equipment operates;
s23: setting fixed time corresponding to load starting self-checking according to the function of the load;
s24: and sequentially carrying out self-checking according to the fixed time of the load starting self-checking and the self-checking sequence of each load.
S25: when a certain load is subjected to self-checking, the running states of other loads are controlled to be kept unchanged.
In some embodiments, the load comprises a sensor load and a non-sensor load, and the self-test of the non-sensor load comprises:
s241: setting an opening state acquisition frequency, opening state continuous acquisition times and an opening state passing time threshold;
s242: when the fixed time of the load opening self-checking is reached, detecting corresponding load opening information according to the opening state acquisition frequency and the opening state continuous acquisition times;
s243: and if the corresponding load information meets the number of times of the qualified criterion of the corresponding load in the opening state reaches the threshold value of the passing number of times of the opening state, judging that the opening state of the corresponding load is normal, otherwise, judging that the opening state of the corresponding load is abnormal.
In some embodiments, the on state corresponds to a load qualifying criterion, including:
the current of the unit is in the range of 4A-10A or 0.5A-5A.
S244: setting an off-state acquisition frequency, an off-state continuous acquisition frequency and an off-state passing frequency threshold;
s245: after the self-checking of the opening state is finished, detecting corresponding load information according to the closing state acquisition frequency and the closing state continuous acquisition times;
s246: and if the corresponding load information meets the times of the qualified criterion of the corresponding load in the closed state, the corresponding load is judged to be in the normal closed state, otherwise, the corresponding load is judged to be in the abnormal closed state.
Some embodiments summarize that the closed state corresponds to load qualifying criteria, including:
the current of the unit is in the range of 0A-0.5A.
In some embodiments, further comprising:
and displaying corresponding load self-checking states, wherein the self-checking states comprise normal load opening state, abnormal load opening state, normal load closing state and abnormal load closing state.
In some embodiments, self-checking the sensor load comprises:
setting continuous acquisition time;
and judging that the sensor is normal if the circuit where the sensor is located is not open or short-circuited in the continuous acquisition time, otherwise, judging that the sensor is abnormal.
Sensors include, but are not limited to: temperature sensors and pressure sensors, etc.
For example, the air conditioning unit includes electronic expansion valve, electric heater, centrifugal fan, compressor, axial fan and sensor, and each load self-checking order in the refrigeration plant is confirmed according to the flow direction of the refrigerant when refrigeration plant operates, includes:
to electronic expansion valve, electric heater, centrifugal fan, compressor, axial fan and sensor self-checking in proper order, specifically include:
step 1: starting the self-checking stroke, displaying the whole stroke on the display panel, executing the reset action by the electronic expansion valve, wherein the reset action comprises 480 steps of opening, 540 steps of closing and finally staying at 200 steps of closing.
Step 2: after the self-checking stroke is started for 5s, the electric heater is switched on, the rest loads are kept unchanged, the electric heater is continuously collected for 15 times once in 1s, when the current of the whole machine is detected to be within the range of 4A-10A for 8 times or more, the fact that the electric heater is normal is indicated, the self-checking is passed, and otherwise, the fact that the electric heater is abnormal is indicated, and the fact that the self-checking fails is indicated.
And (3) turning off the electric heater, collecting once for 1s, continuously collecting for 10 times, keeping the rest loads unchanged, and when the current of the whole machine is detected to be within the range of 0A-0.5A for 5 times or more, indicating that the electric heater is normal and the self-checking is passed, or else, indicating that the electric heater is abnormal and the self-checking is failed.
And step 3: after the self-checking stroke is started for 36s, the centrifugal fan is switched on to be in a low gear, the rest loads are kept unchanged, the centrifugal fan is collected once in 1s and continuously collected for 15 times, when the current of the whole machine is detected to be in the range of 0.5A-5A for 8 times or more, the low gear of the centrifugal fan is normal, the self-checking is displayed to be passed, otherwise, the centrifugal fan is abnormal, and the self-checking is displayed to be failed;
and closing the centrifugal fan to be in a low gear, collecting for one time in 1s, continuously collecting for 10 times, keeping the rest loads unchanged, and when the current of the whole machine is detected to be in the range of 0A-0.5A for 5 times or more, indicating that the centrifugal fan is in a normal low gear and displaying that the self-checking is passed, or else, indicating that the centrifugal fan is in an abnormal low gear and displaying that the self-checking is failed.
Switching on the centrifugal fan to be in a high-grade state, keeping the rest loads unchanged, collecting for one time in 1s, continuously collecting for 15 times, and when the current of the whole machine is detected to be in the range of 0.5A-5A for 8 times or more, indicating that the centrifugal fan is in a high-grade normal state, and displaying that the self-checking is passed, or else, indicating that the centrifugal fan is in a high-grade abnormal state, and displaying that the self-checking is failed;
and (3) closing the high-grade centrifugal fan, collecting once for 1s, continuously collecting for 10 times, keeping the rest loads unchanged, and displaying that the high-grade centrifugal fan is normal when the current of the whole machine is detected to be within the range of 0A-0.5A for 5 times or more, and the self-checking is passed, or else, displaying that the high-grade centrifugal fan is abnormal and the self-checking fails.
And 4, step 4: after the self-checking stroke is started for 126s, the compressor is switched on, the rest of loads are kept unchanged, the acquisition is carried out once in 1s and continuously for 15 times, when the current of the whole machine is detected to be within the range of 0.5A-5A for 8 times or more, the condition that the compressor is normal is indicated, the self-checking is passed, and otherwise, the condition that the compressor is abnormal is indicated, and the self-checking is failed is indicated;
and (3) closing the compressor, collecting once for 1s, continuously collecting for 10 times, keeping the rest loads unchanged, and when the current of the whole machine is detected to be within the range of 0A-0.5A for 5 times or more, indicating that the compressor is normal and displaying that the self-checking is passed, otherwise, indicating that the compressor is abnormal and displaying that the self-checking fails.
And 5: after the self-checking stroke is started for 180s, the axial flow fan is switched on to be in a low gear, the rest loads are kept unchanged, the axial flow fan is collected once in 1s and continuously collected for 15 times, when the current of the whole machine is detected to be in the range of 0.5A-5A for 8 times or more, the condition that the low gear of the axial flow fan is normal is indicated, the self-checking is passed, and otherwise, the condition that the low gear of the axial flow fan is abnormal is indicated, and the self-checking failure is indicated;
closing the axial flow fan at a low gear, collecting once for 1s, continuously collecting for 10 times, keeping the rest loads unchanged, and when the current of the whole machine is detected to be within the range of 0A-0.5A for 5 times or more, indicating that the low gear of the axial flow fan is normal and displaying that the self-checking is passed, otherwise, indicating that the low gear of the axial flow fan is abnormal and displaying that the self-checking is failed;
switching on the axial flow fan at high grade, keeping the rest loads unchanged, collecting for one time in 1s, continuously collecting for 15 times, when the current of the whole machine is detected to be within the range of 0.5A-5A for 8 times or more, indicating that the axial flow fan is at high grade and normal, and displaying that the self-checking is passed, or else, indicating that the axial flow fan is at high grade and abnormal, and displaying that the self-checking fails;
closing the high-grade axial flow fan, collecting once for 1s, continuously collecting for 10 times, keeping the rest loads unchanged, when the current of the whole machine is detected to be within the range of 0A-0.5A for 5 times or more, indicating that the high-grade axial flow fan is normal, and displaying that the self-checking is passed, or else, indicating that the high-grade axial flow fan is abnormal, and displaying that the self-checking fails.
Step 6: and after the self-checking stroke is started for 200s, checking the pressure sensor/thermal bulb, keeping the rest loads unchanged, continuously collecting for 5 seconds, and when the condition that the open circuit or the short circuit does not occur for 5 seconds continuously is detected, indicating that the pressure sensor/thermal bulb is normal, displaying that the self-checking is passed, otherwise, indicating that the pressure sensor/thermal bulb is abnormal, and displaying that the self-checking fails.
In some embodiments, the air conditioning unit performs self-checking when being started, the self-checking step is executed, and after all the loads used on the existing unit are checked, the state of the unit load can be judged more accurately through continuous and repeated detection.
In this embodiment, confirm specific load detection order according to the direction of unit actual operation, set up fixed check-out time according to the load characteristic, guarantee that the operation of system, the flow direction of refrigerant accord with the unit normal condition, because the operation that the self-checking order can be more close to the unit reality to guarantee that this testing result is more close to the unit actual operation, testing result is more accurate, more laminates in reality.
An embodiment of the present invention provides a self-inspection device for a refrigeration apparatus, as shown in a functional structure diagram in fig. 3, the self-inspection device for a refrigeration apparatus includes:
the acquisition module 31 is used for acquiring the flow direction of a refrigerant when the refrigeration equipment runs;
the determining module 32 is configured to determine a self-checking sequence of each load in the refrigeration equipment according to a flow direction of a refrigerant during operation of the refrigeration equipment;
and the self-checking module 33 is used for sequentially performing self-checking according to the self-checking sequence of each load.
In some embodiments, further comprising:
and the setting module 34 is configured to set a fixed time corresponding to the load power-on self-test according to the function of the load.
In the embodiment, the flow direction of the refrigerant during the operation of the refrigeration equipment is obtained through the obtaining module; the determining module determines a self-checking sequence of each load in the refrigeration equipment according to the flow direction of a refrigerant when the refrigeration equipment operates, the self-checking module 3 performs self-checking in sequence according to the self-checking sequence of each load, the setting module sets fixed time corresponding to the starting of the load for self-checking according to the function of the load, the self-checking sequence is ordered according to the operation state of the system, and the self-checking sequence is attached to the actual operation of the unit, so that the problem of the actual operation of the unit can be fed back more accurately in the self-checking process.
An embodiment of the present invention provides a refrigeration apparatus, as shown in a functional structure diagram of fig. 4, the refrigeration apparatus includes:
the self-inspection device 41 of the refrigeration equipment according to the embodiment is described above.
Refrigeration plant includes air conditioning unit, and air conditioning unit includes:
an electronic expansion valve 42, an electric heater 43, a centrifugal fan 44, a compressor 45, an axial flow fan 46, and a sensor 47;
the self-test device 41 of the refrigeration equipment controls an electronic expansion valve 42, an electric heater 43, a centrifugal fan 44, a compressor 45, an axial flow fan 46 and a sensor 47.
The method specifically comprises the following steps:
step 1: starting the self-checking stroke, displaying the whole stroke on the display panel, executing the reset action by the electronic expansion valve, wherein the reset action comprises 480 steps of opening, 540 steps of closing and finally staying at 200 steps of closing.
Step 2: after the self-checking stroke is started for 5s, the electric heater is switched on, the rest loads are kept unchanged, the electric heater is continuously collected for 15 times once in 1s, when the current of the whole machine is detected to be within the range of 4A-10A for 8 times or more, the fact that the electric heater is normal is indicated, the self-checking is passed, and otherwise, the fact that the electric heater is abnormal is indicated, and the fact that the self-checking fails is indicated.
And (3) turning off the electric heater, collecting once for 1s, continuously collecting for 10 times, keeping the rest loads unchanged, and when the current of the whole machine is detected to be within the range of 0A-0.5A for 5 times or more, indicating that the electric heater is normal and the self-checking is passed, or else, indicating that the electric heater is abnormal and the self-checking is failed.
And step 3: after the self-checking stroke is started for 36s, the centrifugal fan is switched on to be in a low gear, the rest loads are kept unchanged, the centrifugal fan is collected once in 1s and continuously collected for 15 times, when the current of the whole machine is detected to be in the range of 0.5A-5A for 8 times or more, the low gear of the centrifugal fan is normal, the self-checking is displayed to be passed, otherwise, the centrifugal fan is abnormal, and the self-checking is displayed to be failed;
and closing the centrifugal fan to be in a low gear, collecting for one time in 1s, continuously collecting for 10 times, keeping the rest loads unchanged, and when the current of the whole machine is detected to be in the range of 0A-0.5A for 5 times or more, indicating that the centrifugal fan is in a normal low gear and displaying that the self-checking is passed, or else, indicating that the centrifugal fan is in an abnormal low gear and displaying that the self-checking is failed.
Switching on the centrifugal fan to be in a high-grade state, keeping the rest loads unchanged, collecting for one time in 1s, continuously collecting for 15 times, and when the current of the whole machine is detected to be in the range of 0.5A-5A for 8 times or more, indicating that the centrifugal fan is in a high-grade normal state, and displaying that the self-checking is passed, or else, indicating that the centrifugal fan is in a high-grade abnormal state, and displaying that the self-checking is failed;
and (3) closing the high-grade centrifugal fan, collecting once for 1s, continuously collecting for 10 times, keeping the rest loads unchanged, and displaying that the high-grade centrifugal fan is normal when the current of the whole machine is detected to be within the range of 0A-0.5A for 5 times or more, and the self-checking is passed, or else, displaying that the high-grade centrifugal fan is abnormal and the self-checking fails.
And 4, step 4: after the self-checking stroke is started for 126s, the compressor is switched on, the rest of loads are kept unchanged, the acquisition is carried out once in 1s and continuously for 15 times, when the current of the whole machine is detected to be within the range of 0.5A-5A for 8 times or more, the condition that the compressor is normal is indicated, the self-checking is passed, and otherwise, the condition that the compressor is abnormal is indicated, and the self-checking is failed is indicated;
and (3) closing the compressor, collecting once for 1s, continuously collecting for 10 times, keeping the rest loads unchanged, and when the current of the whole machine is detected to be within the range of 0A-0.5A for 5 times or more, indicating that the compressor is normal and displaying that the self-checking is passed, otherwise, indicating that the compressor is abnormal and displaying that the self-checking fails.
And 5: after the self-checking stroke is started for 180s, the axial flow fan is switched on to be in a low gear, the rest loads are kept unchanged, the axial flow fan is collected once in 1s and continuously collected for 15 times, when the current of the whole machine is detected to be in the range of 0.5A-5A for 8 times or more, the condition that the low gear of the axial flow fan is normal is indicated, the self-checking is passed, and otherwise, the condition that the low gear of the axial flow fan is abnormal is indicated, and the self-checking failure is indicated;
closing the axial flow fan at a low gear, collecting once for 1s, continuously collecting for 10 times, keeping the rest loads unchanged, and when the current of the whole machine is detected to be within the range of 0A-0.5A for 5 times or more, indicating that the low gear of the axial flow fan is normal and displaying that the self-checking is passed, otherwise, indicating that the low gear of the axial flow fan is abnormal and displaying that the self-checking is failed;
switching on the axial flow fan at high grade, keeping the rest loads unchanged, collecting for one time in 1s, continuously collecting for 15 times, when the current of the whole machine is detected to be within the range of 0.5A-5A for 8 times or more, indicating that the axial flow fan is at high grade and normal, and displaying that the self-checking is passed, or else, indicating that the axial flow fan is at high grade and abnormal, and displaying that the self-checking fails;
closing the high-grade axial flow fan, collecting once for 1s, continuously collecting for 10 times, keeping the rest loads unchanged, when the current of the whole machine is detected to be within the range of 0A-0.5A for 5 times or more, indicating that the high-grade axial flow fan is normal, and displaying that the self-checking is passed, or else, indicating that the high-grade axial flow fan is abnormal, and displaying that the self-checking fails.
Step 6: and after the self-checking stroke is started for 200s, checking the pressure sensor/thermal bulb, keeping the rest loads unchanged, continuously collecting for 5 seconds, and when the condition that the open circuit or the short circuit does not occur for 5 seconds continuously is detected, indicating that the pressure sensor/thermal bulb is normal, displaying that the self-checking is passed, otherwise, indicating that the pressure sensor/thermal bulb is abnormal, and displaying that the self-checking fails.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
It should be noted that the present invention is not limited to the above-mentioned preferred embodiments, and those skilled in the art can obtain other products in various forms without departing from the spirit of the present invention, but any changes in shape or structure can be made within the scope of the present invention with the same or similar technical solutions as those of the present invention.
Claims (16)
1. A method of self-testing a refrigeration apparatus, comprising:
acquiring the flow direction of a refrigerant when the refrigeration equipment operates;
determining the self-checking sequence of each load in the refrigeration equipment according to the flow direction of a refrigerant when the refrigeration equipment operates;
and sequentially carrying out self-checking according to the self-checking sequence of each load.
2. The self-test method for the refrigeration equipment as claimed in claim 1, wherein after determining the self-test sequence of the loads in the refrigeration equipment, the method further comprises the following steps:
and setting the fixed time of the corresponding load starting self-checking according to the function of the load.
3. The self-test method of a refrigeration appliance according to claim 2, wherein the load comprises a non-sensor load, and the self-test of the non-sensor load comprises:
setting an opening state acquisition frequency, opening state continuous acquisition times and an opening state passing time threshold;
when the fixed time of the load opening self-checking is reached, detecting corresponding load opening information according to the opening state acquisition frequency and the opening state continuous acquisition times;
and if the corresponding load information meets the number of times of the qualified criterion of the corresponding load in the opening state reaches the threshold value of the passing number of times of the opening state, judging that the opening state of the corresponding load is normal, otherwise, judging that the opening state of the corresponding load is abnormal.
4. The self-test method of a refrigeration appliance according to claim 3, wherein the self-testing the non-sensor load further comprises:
setting an off-state acquisition frequency, an off-state continuous acquisition frequency and an off-state passing frequency threshold;
after the self-checking of the opening state is finished, detecting corresponding load information according to the closing state acquisition frequency and the closing state continuous acquisition times;
and if the corresponding load information meets the times of the qualified criteria of the corresponding load in the closed state, the corresponding load is judged to be normal, otherwise, the corresponding load is judged to be abnormal.
5. The self-test method of a refrigeration appliance according to claim 4, further comprising:
and displaying corresponding load self-checking states, wherein the self-checking states comprise normal load opening state, abnormal load opening state, normal load closing state and abnormal load closing state.
6. A self-test method for a refrigeration device as recited in claim 3 wherein said on-state corresponds to a load qualification criterion comprising:
the current of the unit is in the range of 4A-10A or 0.5A-5A.
7. The self-test method of a refrigeration appliance as set forth in claim 4 wherein said off condition corresponds to a load qualification criterion comprising:
the current of the unit is in the range of 0A-0.5A.
8. The self-test method of a refrigeration appliance according to claim 2, wherein the load comprises a sensor load, and the self-test of the sensor load comprises:
setting continuous acquisition time;
and judging that the sensor is normal if the circuit where the sensor is located is not open or short-circuited within the continuous acquisition time, otherwise, judging that the sensor is abnormal.
9. The self-test method of a refrigeration appliance according to claim 8, wherein the sensor comprises:
temperature sensors and pressure sensors.
10. The self-inspection method of a refrigeration apparatus according to any one of claims 1 to 9, further comprising:
when a certain load is subjected to self-checking, the running states of other loads are controlled to be kept unchanged.
11. The self-checking method of the refrigeration equipment according to any one of claims 1 to 9, wherein the refrigeration equipment comprises an air conditioning unit, the air conditioning unit comprises an electronic expansion valve, an electric heater, a centrifugal fan, a compressor, an axial flow fan and a sensor, the self-checking sequence of each load in the refrigeration equipment is determined according to the flow direction of a refrigerant when the refrigeration equipment operates, and the self-checking method comprises the following steps:
and self-checking the electronic expansion valve, the electric heater, the centrifugal fan, the compressor, the axial flow fan and the sensor in sequence.
12. The self-test method of a refrigeration appliance according to claim 11, further comprising:
and respectively carrying out self-checking on the low-grade state and the high-grade state of the centrifugal fan.
13. The self-test method of a refrigeration appliance according to claim 11, further comprising:
and respectively carrying out self-checking on the low-grade state and the high-grade state of the axial flow fan.
14. A self-test device for a refrigeration appliance, comprising:
the acquisition module is used for acquiring the flow direction of a refrigerant when the refrigeration equipment runs;
the determining module is used for determining the self-checking sequence of each load in the refrigeration equipment according to the flow direction of a refrigerant when the refrigeration equipment runs;
and the self-checking module is used for sequentially carrying out self-checking according to the self-checking sequence of each load.
15. A refrigeration apparatus, comprising: the self-test device of the refrigeration equipment according to claim 14.
16. The refrigeration appliance of claim 15 wherein the refrigeration appliance comprises an air conditioning unit comprising:
the system comprises an electronic expansion valve, an electric heater, a centrifugal fan, a compressor, an axial flow fan and a sensor;
the self-checking device of the refrigeration equipment controls the electronic expansion valve, the electric heater, the centrifugal fan, the compressor, the axial flow fan and the sensor to carry out self-checking in sequence.
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