CN108917091B - Intelligent testing method for air conditioner and air conditioner thereof - Google Patents
Intelligent testing method for air conditioner and air conditioner thereof Download PDFInfo
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- CN108917091B CN108917091B CN201811136647.1A CN201811136647A CN108917091B CN 108917091 B CN108917091 B CN 108917091B CN 201811136647 A CN201811136647 A CN 201811136647A CN 108917091 B CN108917091 B CN 108917091B
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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 provides an intelligent test method for an air conditioner and the air conditioner thereof, wherein the test method comprises the following steps: acquiring a current working mode of the air conditioner, and acquiring a corresponding system balance pressure parameter and an indoor temperature parameter in the working mode; obtaining corresponding saturation pressure according to the obtained indoor temperature parameter, determining a pressure range of the air conditioner in normal operation in the working mode according to the saturation pressure, and setting the pressure range as a pressure steady-state range; judging whether the collected pressure parameters fall into the preset pressure steady-state range or not, if so, judging that the air conditioner normally operates; and if not, judging that the air conditioner fails in operation, and performing fault protection. The air conditioner intelligent test method and the air conditioner thereof provided by the invention can automatically detect the on-line condition of the air conditioner and whether the air conditioner can normally run or not according to the working state of the air conditioner, thereby exposing the problem air conditioner in advance and ensuring the good state of the air conditioner leaving the factory.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner intelligent testing method and an air conditioner thereof.
Background
If the air conditioner has the phenomena of unsmooth operation, liquid blockage, liquid absence and the like in the operation process, the compressor can be damaged after the unit operates, and the compressor can be seriously damaged and catches fire and the like. Therefore, the air conditioning system needs to be subjected to an online test before leaving the factory to detect the connection condition of the internal unit and the external unit, and also needs to be subjected to an operation detection after being installed to detect whether the air conditioning system can normally operate and whether the performance parameters of the air conditioning system meet the requirements. At present, the detection and debugging processes of the air conditioning system are all manually controlled, so that the detection efficiency is low, and human resources are wasted.
Disclosure of Invention
In view of this, the present invention is directed to an intelligent testing method for an air conditioner and an air conditioner thereof, which can automatically determine whether an operation condition meets a requirement according to an operation state of a unit.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an intelligent test method for an air conditioner comprises the following steps:
acquiring a current working mode of the air conditioner, and acquiring a corresponding system balance pressure parameter and an indoor temperature parameter in the working mode;
obtaining corresponding saturation pressure according to the obtained indoor temperature parameter, determining a pressure range of the air conditioner in normal operation in the working mode according to the saturation pressure, and setting the pressure range as a pressure steady-state range;
judging whether the collected pressure parameters fall into the preset pressure steady-state range or not, if so, judging that the air conditioner normally operates; and if not, judging that the air conditioner fails in operation, and performing fault protection.
Further, the current operating mode of the air conditioner includes: the method comprises the steps of online detection state and air conditioner running state, wherein the air conditioner running state comprises air conditioner heating running and air conditioner cooling running.
Further, the acquiring a current working mode of the air conditioner and acquiring a corresponding system equilibrium pressure parameter and a corresponding system equilibrium temperature parameter in the working mode includes:
in the on-line detection state, at a first preset time t1In the method, a first temperature parameter T is obtained1A first pressure parameter P1And obtaining the first temperature parameter T1Corresponding first saturation pressure P1 full ofPresetting a first pressure steady-state range P1 stable；
Further, the acquiring a current working mode of the air conditioner and acquiring a corresponding system equilibrium pressure parameter and a corresponding system equilibrium temperature parameter in the working mode includes:
in the heating operation of the air conditioner, the second preset timeTime t2In the method, a second temperature parameter T is obtained2Second pressure parameter P2And obtaining the second temperature parameter T2Corresponding second saturation pressure P2 full ofPresetting a second pressure steady-state range P2 stable。
Further, the first pressure parameter P is judged1Whether it falls within the first pressure steady-state range P1 stableThe method specifically comprises the following steps:
if P1≥P1 full ofFirst predetermined value, then first pressure parameter P1Falls within a first pressure steady-state range P1 stableThe air conditioner operates normally;
if P1 < P1 full ofFirst predetermined value, then first pressure parameter P1Does not fall within the first pressure steady-state range P1 stableAnd the air conditioner is in fault during operation, and fault protection is carried out.
Further, the second pressure parameter P is judged2Whether it falls within the second pressure steady-state range P2 stableThe method specifically comprises the following steps:
if P2≥P2 full ofSecond predetermined value, then second pressure parameter P2Falls within a second pressure steady-state range P2 stableThe air conditioner operates normally;
if P2＜P2 full ofSecond predetermined value, then second pressure parameter P2Does not fall within the second pressure steady-state range P2 stableAnd the air conditioner is in fault during operation, and fault protection is carried out.
Further, after the air conditioner normally operates, the method also comprises the following steps:
under the refrigeration operation of the air conditioner, the air conditioner operates according to a preset frequency, and the valve step opening degree of the electronic expansion valve is controlled;
acquiring a third pressure parameter P of the air conditioner in a minimum step angle state3Presetting the operating pressure range of the electronic expansion valve in the normal state as a third pressure steady-state range P3 stable；
If P3≤PSmallThird preset value, then the third pressure parameter P3Falls within the third pressure steady-state range P3 stableInternal; the electronic expansion valve operates normally;
if P3＞PSmallThird preset value, then the third pressure parameter P3Does not fall within the third pressure steady-state range P3 stableInternal; and the electronic expansion valve is abnormally operated to carry out fault protection.
Wherein, PSmallAnd setting a standard value for the air conditioner in the minimum step angle state.
Further, after the air conditioner normally operates, the method also comprises the following steps:
under the refrigeration operation of the air conditioner, the air conditioner operates according to a preset frequency; and controlling the opening degree of the electronic expansion valve;
acquiring a fourth pressure parameter P of the air conditioner in a rated step angle state4Presetting the operating pressure range of the electronic expansion valve in the normal state as a fourth pressure steady-state range P4 stable；
If PForehead (forehead)P is less than or equal to fourth preset value4≤PForehead (forehead)Third predetermined value, then said fourth pressure parameter P4Falls within the fourth pressure steady-state range P4 stableThe electronic expansion valve operates normally;
if P4＞PForehead (forehead)Third predetermined value or P4＜PForehead (forehead)Fourth preset value, then P4Does not fall within the fourth pressure steady-state range P4 stableThe electronic expansion valve is abnormally operated to carry out fault protection;
wherein, PForehead (forehead)And setting a standard value for the air conditioner in a rated step angle state.
Further, the range of the first preset value is 0.8-0.9, the range of the second preset value is 1.03-1.07, the range of the third preset value is 1.08-1.12, and the range of the fourth preset value is 0.88-0.92.
Compared with the prior art, the control method of the intelligent air conditioner has the following advantages:
(1) according to the intelligent testing method for the air conditioner, the online condition of the indoor unit and the outdoor unit of the air conditioner, whether the air conditioning system can normally operate and whether the performance parameters of the air conditioner meet requirements can be automatically detected according to the working state of the air conditioner, and a problem air conditioner can be exposed in advance, so that the good state of the air conditioner leaving a factory is ensured; meanwhile, the intelligent detection of the air conditioner can save human resources and improve the detection efficiency and the detection accuracy.
(2) The intelligent testing method of the air conditioner can simulate the conditions of no opening of the small valve of the air conditioner, no liquid in the unit, no opening of the large valve of the air conditioner, tripping of the coil of the electronic expansion valve and the like by detecting the system pressure in different working states, thereby realizing the error prevention before the air conditioner leaves the factory.
Another objective of the present invention is to provide an air conditioner, which includes a non-transitory computer-readable storage medium, wherein the storage medium stores computer instructions, and the computer instructions, when executed, implement the above intelligent testing method for the air conditioner.
Compared with the prior art, the air conditioner and the intelligent testing method for the air conditioner have the same advantages, and are not repeated herein.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is a schematic diagram of an intelligent testing method for an air conditioner according to the present invention;
FIG. 2 is a schematic diagram of an intelligent testing method for an air conditioner according to the present invention in an online testing state;
FIG. 3 is a schematic diagram of an intelligent testing method for an air conditioner according to the present invention during heating operation of the air conditioner;
FIG. 4 is a schematic diagram of an intelligent testing method for an air conditioner under the cooling operation of the air conditioner according to the present invention;
fig. 5 is a second schematic diagram of the intelligent testing method for an air conditioner according to the present invention under the cooling operation of the air conditioner.
Detailed Description
The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The intelligent testing method of the air conditioner and the air conditioner thereof are further explained below by combining the attached drawings and an actual variable frequency air conditioning system.
Example 1
Referring to fig. 1, the present embodiment provides an intelligent testing method for an air conditioner, including the following steps:
s1, acquiring the current working mode of the air conditioner, and acquiring the corresponding system balance pressure parameter and indoor temperature parameter in the working mode; wherein, the current working mode of the air conditioner comprises: the method comprises the following steps of (1) online detecting states and air conditioner running states, wherein the air conditioner running states comprise air conditioner heating running and air conditioner cooling running;
s2, obtaining corresponding saturation pressure according to the obtained temperature parameters, and presetting the pressure range of the normal operation of the air conditioner in the working mode as a pressure steady-state range according to the corresponding saturation pressure;
in an online state or an operating state of the air conditioner, when the air conditioner is normally operated, a pressure interval can be detected by a pressure sensor arranged on a connecting thick pipe (namely an air pipe) of the indoor unit and the outdoor unit, the pressure interval is the pressure steady-state range, and the pressure steady-state range can be set according to the saturation pressure.
S3, judging whether the acquired pressure parameters fall into a preset pressure steady-state range, if so, judging that the air conditioner normally operates; otherwise, the air conditioner is in fault during operation, and fault protection is carried out.
Wherein the fault protection comprises: the air conditioner stops running and lights the warning light, and in the embodiment, the warning light is a red light.
The intelligent air conditioner control method of the embodiment can automatically detect the online condition of the indoor unit and the outdoor unit of the air conditioner, whether the air conditioning system can normally run or not and whether the performance parameters of the air conditioner meet the requirements or not; through intelligent detection of the air conditioner, the problem air conditioner can be exposed in advance, so that the good state of the air conditioner leaving a factory is ensured; meanwhile, the intelligent detection of the air conditioner can save human resources and improve the detection efficiency and the detection accuracy.
Example 2
With reference to fig. 2, a difference between the present embodiment and embodiment 1 is that the present embodiment is an intelligent testing method for an air conditioner when the current working mode of the air conditioner is in an online detection state in step S1, and specifically includes the following steps:
s11, the obtained current working mode of the air conditioner is in an online detection state, and the current working mode is in an online detection state at a first preset time t1In the method, a first temperature parameter T is obtained1A first pressure parameter P1；
Specifically, after the indoor unit and the outdoor unit of the air conditioner are connected and powered on, the main program of the air conditioning system automatically calls the online test function module, and an operator sends a test signal to the air conditioning system through a button on the controller of the air conditioning system, so that the online test module starts to run automatically. At a prescribed first preset time t1In the method, the balance pressure of the air conditioning system is detected through a pressure sensor to obtain a first pressure parameter P1The pressure sensor is arranged on a thick connecting pipe (namely an air pipe) of the indoor unit and the outdoor unit, and can automatically detect the real-time pressure value in the air pipe; meanwhile, a first temperature parameter T is obtained by setting a temperature sensor on the indoor unit1The temperature sensor can automatically detect the real-time temperature in a room. The first preset time t in this embodiment1In the range of 4 to 6 seconds, the detection efficiency is affected by a long operation time, preferably 5 seconds.
S12, acquiring the first temperature parameter T1Corresponding first saturation pressure P1 full ofPresetting the normal operation pressure range of the air conditioner in the online detection state as a first pressure steady-state range P1 stable；
Wherein the first pressure steady-state range P1 stableThe air conditioner can be set by workers according to experience values, and the air conditioner can also be set by experimental determination. The first pressure steady-state range P in the present embodiment1 stableHas a critical value of P1 full ofA first preset value, based on the comprehensive statistics of air conditioners by operators, wherein the states of the air conditioner units are not completely consistent in an operating air conditioner unit roomThe critical value is set to P according to practical experience1 full ofThe operability of the first preset value is strong, wherein the range of the first preset value is 0.8-0.9, and the preferred embodiment is 0.85.
In practical application, in the same working environment, the pressure parameter of the air conditioning system is influenced and controlled by the temperature parameter, namely the temperature parameter of the air conditioning system determines the pressure parameter, for example, when steam is in a dynamic equilibrium state, namely a saturation state, the temperature is a saturation temperature, the pressure corresponding to the saturation temperature is a saturation pressure, and one saturation temperature parameter corresponds to one saturation pressure parameter; for different refrigerants, the prior art provides corresponding refrigerant physical property tables. Therefore, the first temperature parameter T corresponding to the air conditioning system can be adjusted1Mapping the saturation temperature parameter of the refrigerant to obtain a first saturation pressure P corresponding to the mapped saturation temperature according to a pre-stored refrigerant physical property table1 full of。
S13, the test module judges the first pressure parameter P1Whether it falls within the first pressure steady-state range P1 stable(ii) a The method specifically comprises the following steps:
if P1 is not less than P1Full ofFirst predetermined value, then first pressure parameter P1Falls within a first pressure steady-state range P1 stableThe normal operation of the air conditioner is explained;
if P1＜P1 full ofFirst predetermined value, then first pressure parameter P1Does not fall within the first pressure steady-state range P1 stableAnd the operation of the air conditioner is failed, and fault protection is carried out. The operation fault may be the condition that a small valve of the air conditioner is not opened, and a refrigerant is lacked; and at the moment, the fault can be fed back to the air conditioning system controller, the controller sends a feedback signal to an air conditioner external unit and displays the feedback signal through the external unit, and the air conditioner automatically stops running after the display is finished.
It can be understood that, according to the refrigeration and heating cycle, in order to prevent the refrigerant (gas-liquid) from flowing backwards in the system, the system is divided into a gas stop valve and a liquid stop valve, wherein the gas stop valve is large (generally called as a large valve), and the liquid stop valve is small in pipe diameter (generally called as a small valve) because of low density of the gas; wherein, the big valve is connected with the air pipe (thick pipe), and the small valve is connected with the liquid pipe (liquid pipe).
According to the embodiment, whether the small valve of the air conditioner is not opened or the refrigerant is leaked or not added is detected and judged by directly detecting the pressure and the indoor temperature in the connecting pipe, the testing method is simple, states of the small valve of the air conditioner, no liquid in a unit and the like are simulated, so that the mistake proofing is realized, and the method is suitable for air conditioners of any specification, has reliability and is suitable for popularization.
Example 3
With reference to fig. 3, a difference between this embodiment and embodiment 1 is that this embodiment is an air conditioner intelligent test method when the current operating mode of the air conditioner is the air conditioner heating operation in step S1, and specifically includes the following steps:
s21, the obtained current working mode of the air conditioner is heating operation, and the heating operation is carried out within a second preset time t2In the method, a second temperature parameter T is obtained2Second pressure parameter P2。
Specifically, in the air conditioner running process, the air conditioner is in a heating running mode, a main program of the air conditioning system can automatically call a heating test function module, and an operator sends a test signal to the air conditioning system through a button on an air conditioning system controller, so that the heating test module starts to run automatically. Detecting the operating pressure of the air conditioning system through a pressure sensor within a specified second preset time t2 to obtain a second pressure parameter P2, wherein the pressure sensor is arranged on a thick connecting pipe (namely an air pipe) of an indoor unit and an outdoor unit and can automatically detect the real-time pressure value in the air pipe; meanwhile, a temperature sensor arranged on the indoor unit is used for acquiring a second temperature parameter T2, and the temperature sensor can automatically detect the real-time indoor temperature.
The second preset time t in this embodiment225s, a second preset time t2A long operation time affects the detection efficiency, and a short operation time of less than 25 seconds affects the failure detection rate.
S22, acquiring the second temperature parameter T2Corresponding second saturation pressure P2 full ofPresetting the pressure range of the normal operation of the air conditioner in the heating operation state of the air conditioner as a second pressure steady-state range P2 stable。
The second temperature parameter to be obtainedT2Mapping the saturation temperature parameter of the refrigerant to obtain a second saturation pressure P corresponding to the mapped saturation temperature according to a pre-stored refrigerant physical property table2 full of. Wherein the second pressure steady-state range P2 stableThe air conditioner can be set by workers according to experience values, and the air conditioner can also be set by experimental determination. The second pressure steady-state range P in the present embodiment2 stableHas a critical value of P2 full ofA second preset value, based on the comprehensive statistics of the air conditioners by the operator, in an operating air conditioner unit room, the states of all the air conditioner units are not completely consistent, and the critical value is set as P according to the actual experience2 full ofThe operability of the second preset value is strong, wherein the second preset value is in a range of 1.03 to 1.07, and the embodiment is preferably 1.05.
S23, the test module judges the second pressure parameter P1Whether it falls within the second pressure steady-state range P2 stableInternal; the method specifically comprises the following steps:
if P2≥P2 full ofSecond predetermined value, then second pressure parameter P2Falls within a second pressure steady-state range P2 stableThe air conditioner operates normally;
if P2＜P2 full ofSecond predetermined value, then second pressure parameter P2Does not fall within the second pressure steady-state range P2 stableWhen the air conditioner is in fault during operation, fault protection is carried out; the fault can be that the air conditioner big valve is not opened, and the fault can be fed back to the air conditioning system controller this moment, and the controller sends the feedback signal to the outer machine of air conditioner to show through the outer machine, the air conditioner automatic shutdown after showing to finish.
In the heating operation state of the air conditioner, the refrigerant enters the standard indoor unit through the big valve, the pressure of the air conditioning system rises at the moment and generally rises to about 2 times of the saturation pressure, and therefore the normal operation of the air conditioner can be judged as long as the obtained second pressure parameter is slightly larger than the saturation pressure.
If the air conditioner big valve is in a closed state, the refrigerant can not enter the standard indoor unit through the big valve, although the air conditioner compressor is still continuously pressurized, the pressure sensor on the thick pipe is not changed from the detected second pressure, and at the moment, the abnormal operation of the air conditioner can be judged, and the shutdown protection is required.
Whether this embodiment detects the judgement through the pressure in the direct detection connection thick pipe and indoor temperature and whether the air conditioner main valve does not open, and analog system main valve is in the closed condition to realize the mistake proofing, be applicable to the air conditioner of any specification, improved detection efficiency and detection accuracy.
Example 4
As shown in fig. 4, the present embodiment is different from the above-mentioned embodiments in that, after determining that the air conditioner is normally operated in step S23, the present embodiment further includes the following steps:
s4, under the normal state of the air conditioner, the air conditioner is in a refrigeration operation mode, the main program of the air conditioning system automatically calls a refrigeration test function module, an operator sends a test signal to the air conditioning system through a button on the air conditioning system controller, the refrigeration test module starts to automatically operate, and the air conditioner operates at a set frequency; meanwhile, a controller of the air conditioning system controls the opening degree of the electronic expansion valve;
specifically, the opening cycle period of a group of electronic expansion valves is preset, and a controller of the air conditioning system controls the electronic expansion valves to reset from the existing state at a certain valve opening rate, then gradually open to the maximum opening, and then gradually reduce the opening to the specified minimum opening. The valve opening rate is not rigidly specified, as long as the electronic expansion valve can be opened and closed in a set cycle.
S5, in an opening circulation period of the electronic expansion valve, detecting the operating pressure of the air conditioner at the minimum step angle through the pressure sensor to obtain a third pressure parameter P3(ii) a Presetting the operating pressure range of the electronic expansion valve in the normal state as a third pressure steady-state range P3 stable。
Wherein the third pressure steady-state range P3 stableThe air conditioner can be set by workers according to experience values, and the air conditioner can also be set by experimental determination. The third pressure steady-state range P in the present embodiment3 stableHas a critical value of PSmallThird predetermined value, PSmallA standard value set for the air conditioner in the minimum step angle stateThe three preset values are based on the comprehensive statistics of the air conditioner by operators, the operation pressure at the minimum step angle generally does not exceed about 10 percent of the minimum standard value, and therefore the critical value is set to be P according to practical experienceSmallThe third preset value has the strongest operability, wherein the third preset value ranges from 1.08 to 1.12, and the third preset value is preferably 1.10 in the embodiment.
S6, judging a third pressure parameter P through a refrigeration test module3Whether it falls within the third pressure steady-state range P3 stableInternal; the method specifically comprises the following steps:
if P3≤PSmallThird preset value, then the third pressure parameter P3Falls within the third pressure steady-state range PStent 3Internal; the electronic expansion valve operates normally;
if P3＞PSmallThird preset value, then the third pressure parameter P3Does not fall within the third pressure steady-state range P3 stableInternal; the electronic expansion valve is abnormally operated to carry out fault protection; the fault can be tripping of an electronic expansion valve coil of the air conditioner, the fault can be fed back to the air conditioning system controller, the controller sends a feedback signal to an air conditioner external unit and displays the feedback signal through the external unit, and the air conditioner automatically stops running after the display is finished.
The embodiment detects and judges whether the coil of the electronic expansion valve of the air conditioner is tripped or not by directly detecting the operating pressure in the connecting thick pipe and comparing the operating pressure with the standard value, the test method is simple, the tripping of the coil of the electronic expansion valve of the air conditioner system can be simulated, the mistake proofing is realized, and the method is suitable for air conditioners of any specification, reliable in use and suitable for popularization.
Example 5
In the normal cooling operation process of the air conditioner, whether the coil of the electronic expansion valve is tripped or not can be judged by detecting the operating pressure at the rated step angle in addition to the above-mentioned operating pressure at the detected minimum step angle, specifically, as shown in fig. 5, the present embodiment is different from embodiment 4 in that after step S4, the present embodiment further includes the steps of:
s7, in one opening circulation period of the electronic expansion valve, passingThe pressure sensor detects the operating pressure of the air conditioner at a rated step angle to obtain a fourth pressure parameter P4(ii) a Presetting the operating pressure range of the electronic expansion valve in the normal state as a fourth pressure steady-state range P4 stable。
Wherein the fourth pressure steady-state range P4 stableThe air conditioner can be set by workers according to experience values, and the air conditioner can also be set by experimental determination. In the present embodiment, since the operating pressure at the rated pitch angle does not generally exceed about 10% of the rated reference value in the upper and lower directions, the fourth pressure steady-state range P4 stableIs PForehead (forehead)Fourth Preset value to PForehead (forehead)Third predetermined value, PForehead (forehead)The third preset value and the fourth preset value are set according to actual experience based on comprehensive statistics of an operator on the air conditioner; wherein the third preset value range is 1.08-1.12, the fourth preset value range is 0.88-0.92, in this embodiment, preferably, the third preset value range is 1.10, and the fourth preset value range is 0.9.
S8, judging a fourth pressure parameter P through a refrigeration test module4Whether or not it falls within the fourth pressure steady-state range P4 stableInternal; the method specifically comprises the following steps:
if PForehead (forehead)P is less than or equal to fourth preset value4≤PForehead (forehead)Third predetermined value, then fourth pressure parameter P4Falls within the fourth pressure steady-state range P4 stableIn the interior, the electronic expansion valve operates normally;
if P4＞PForehead (forehead)Third predetermined value or P4＜PForehead (forehead)Fourth predetermined value, then P4Does not fall within the fourth pressure steady-state range P4 stableIn the method, the electronic expansion valve is abnormally operated to carry out fault protection; the fault can be tripping of an electronic expansion valve coil of the air conditioner, the fault can be fed back to the air conditioning system controller, the controller sends a feedback signal to an air conditioner external unit and displays the feedback signal through the external unit, and the air conditioner automatically stops running after the display is finished.
It can be understood that if the electronic expansion valve coil is not tripped, in the process of adjusting the valve step opening of the electronic expansion valve, the operating pressure of the air conditioner at the rated step angle and the operating pressure at the minimum step angle do not exceed 10% of the standard value, that is, the operating pressure does not change much in the normal state; when the coil of the electronic expansion valve is tripped, the instruction of the controller cannot be executed, and the opening degree of the electronic expansion valve cannot act according to the instruction requirement, so that the operating pressure of the air conditioner is greatly changed at the moment.
The embodiment detects and judges whether the coil of the electronic expansion valve of the air conditioner is tripped or not by directly detecting the operating pressure in the connecting thick pipe and comparing the operating pressure with the standard value, the test method is simple, the tripping of the coil of the electronic expansion valve of the air conditioner system can be simulated, the mistake proofing is realized, and the method is suitable for air conditioners of any specification, reliable in use and suitable for popularization.
Example 6
The embodiment provides an air conditioner, which comprises a non-transitory computer readable storage medium, wherein the storage medium stores computer instructions, and when the computer instructions are executed, the intelligent testing method of the air conditioner can be realized according to the embodiments 1 to 5.
The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative and not limiting. It will be understood by those skilled in the art that various changes, modifications and equivalents may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An intelligent testing method for an air conditioner is characterized by comprising the following steps:
acquiring a current working mode of the air conditioner, and acquiring a corresponding system balance pressure parameter and an indoor temperature parameter in the working mode;
obtaining corresponding saturation pressure according to the obtained indoor temperature parameter, determining a pressure range of the air conditioner in normal operation in the working mode according to the saturation pressure, and setting the pressure range as a pressure steady-state range;
judging whether the acquired pressure parameters fall into the pressure steady-state range or not, if so, judging that the air conditioner normally operates; and if not, judging that the air conditioner fails in operation, and performing fault protection.
2. The intelligent test method for the air conditioner according to claim 1, wherein the current working mode of the air conditioner comprises the following steps: the method comprises the steps of online detection state and air conditioner running state, wherein the air conditioner running state comprises air conditioner heating running and air conditioner cooling running.
3. The intelligent testing method for the air conditioner according to claim 2, wherein the obtaining of the current working mode of the air conditioner and the obtaining of the corresponding system balance pressure parameter and temperature parameter in the working mode comprises:
in the on-line detection state, at a first preset time t1In the method, a first temperature parameter T is obtained1A first pressure parameter P1And obtaining the first temperature parameter T1Corresponding first saturation pressure
Presetting a first pressure steady state range
4. The intelligent testing method for the air conditioner according to claim 3, wherein the step of obtaining the current working mode of the air conditioner and obtaining the corresponding system balance pressure parameter and temperature parameter in the working mode further comprises the following steps:
in the heating operation of the air conditioner, at a second preset time t2In the method, a second temperature parameter T is obtained2Second pressure parameter P2And obtaining the second temperature parameter T2Corresponding second saturation pressure
Presetting a second pressure steady-state range
5. The intelligent test method for air conditioners as claimed in claim 4, wherein the first pressure parameter P is judged1Whether it falls within the first pressure steady state range
The method specifically comprises the following steps:
if it is
The first pressure parameter P1Falls within a first pressure steady state range
In the interior, the air conditioner normally operates;
if it is
The first pressure parameter P1Does not fall within the first pressure steady-state range
And the air conditioner breaks down during operation, and fault protection is carried out.
6. The intelligent test method for air conditioners as claimed in claim 5, wherein the second pressure parameter P is judged2Whether it falls within the second pressure steady state range
The method specifically comprises the following steps:
if it is
The second pressure parameter P2Falls within a second pressure steady state range
In the interior, the air conditioner normally operates;
if it is
The second pressure parameter P2Does not fall within the second pressure steady state range
And the air conditioner breaks down during operation, and fault protection is carried out.
7. The intelligent test method for the air conditioner according to claim 6, wherein after the air conditioner normally operates, the method further comprises the following steps:
under the refrigeration operation of the air conditioner, the air conditioner operates according to a preset frequency, and the valve step opening degree of the electronic expansion valve is controlled;
acquiring a third pressure parameter P of the air conditioner in a minimum step angle state3Presetting the operating pressure range of the electronic expansion valve in the normal state as a third pressure steady-state range
If P3≤PSmallThird preset value, then the third pressure parameter P3Falls within the third pressure steady-state range
Internal; the electronic expansion valve operates normally;
if P3＞PSmallThird preset value, then the third pressure parameter P3Does not fall within the third pressure steady state range
Internal; the electronic expansion valve is abnormally operated to carry out fault protection;
wherein, PSmallFor the air conditioner at the minimum step pitchThe standard value set in the angular state.
8. The intelligent test method for the air conditioner according to claim 7, further comprising the steps of, after the air conditioner normally operates:
under the refrigeration operation of the air conditioner, the air conditioner operates according to a preset frequency; and controlling the opening degree of the electronic expansion valve;
acquiring a fourth pressure parameter P of the air conditioner in a rated step angle state4Presetting the operating pressure range of the electronic expansion valve in the normal state as a fourth pressure steady-state range
If PForehead (forehead)P is less than or equal to fourth preset value4≤PForehead (forehead)Third predetermined value, then said fourth pressure parameter P4Falls within the fourth pressure steady state range
The electronic expansion valve operates normally;
if P4＞PForehead (forehead)Third predetermined value or P4＜PForehead (forehead)Fourth preset value, then P4Does not fall within the fourth pressure steady state range
And the electronic expansion valve operates abnormally to carry out fault protection
Wherein, PForehead (forehead)And setting a standard value for the air conditioner in a rated step angle state.
9. The intelligent testing method for the air conditioner according to claim 8, wherein the first preset value ranges from 0.8 to 0.9, the second preset value ranges from 1.03 to 1.07, the third preset value ranges from 1.08 to 1.12, and the fourth preset value ranges from 0.88 to 0.92.
10. An air conditioner comprising a non-transitory computer readable storage medium having stored thereon computer instructions, wherein the computer instructions, when executed, implement the intelligent test method of air conditioner according to any one of claims 1-9.
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| CN113669880A (en) * | 2021-07-29 | 2021-11-19 | 青岛海尔空调器有限总公司 | Air conditioner control method and device, electronic equipment and storage medium |
| CN114033689B (en) * | 2021-10-27 | 2023-12-22 | 宁波德曼压缩机有限公司 | Method, system, intelligent terminal and medium for judging air filtering blocking degree of variable-frequency screw air compressor |
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| CN102679482B (en) * | 2012-05-25 | 2014-09-17 | 宁波奥克斯空调有限公司 | Heat recovery multiplex system based on variable-frequency air conditioner and control method thereof |
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