CN115899946A - Fault detection method and device for air conditioning unit, air conditioner and storage medium - Google Patents
Fault detection method and device for air conditioning unit, air conditioner and storage medium Download PDFInfo
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Abstract
The invention discloses a fault detection method and device of an air conditioning unit, an air conditioner and a storage medium, wherein the method comprises the following steps: when an internal fan of the air conditioner is started to a preset time, acquiring the outdoor environment temperature and the indoor environment temperature; respectively matching the outdoor environment temperature and the indoor environment temperature with a preset temperature interval to determine the current detection mode of the air conditioner; sequentially acquiring parameters corresponding to units to be detected in the air conditioner to obtain parameters of the units to be detected, and sequentially comparing the parameters of the units to be detected with parameter intervals corresponding to a current detection mode to judge whether each unit to be detected is in an abnormal state; and if all the units to be tested are judged to be in the abnormal state, judging that the air conditioning unit is in the abnormal state, and starting the air conditioner to run. The invention realizes the comprehensive detection of the air conditioner, reduces the maintenance cost of the commercial air conditioner and improves the reliability of the operation of the whole air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a fault detection method and device for an air conditioning unit, an air conditioner and a storage medium.
Background
With the improvement of living standard, commercial air-conditioning occasions are more widely applied. International standards specify that commercial air conditioners are a generic term for air conditioning units above 3 HP. In the actual use process, the commercial air conditioner has large cooling capacity, is more convenient and quicker to use and has low overall comprehensive cost. In addition, commercial air conditioners are widely applied in various aspects, particularly in the aspects of freezing and refrigerating and data rooms, and the equipment needs to be cooled frequently to maintain the normal operation of the equipment. However, when the unit is in operation, a fault inevitably occurs, the refrigerating effect of the unit can be influenced if the fault is small, and the service life of the unit can be influenced if the fault is large, so that fault detection needs to be carried out on the air conditioning unit.
The conventional fault detection method is only used for detecting a certain fault of the air conditioner, for example, only detecting the refrigerant quantity of the air conditioner. Therefore, the existing fault detection mode is difficult to comprehensively detect the air conditioner, so that the component devices are checked before being damaged, the maintenance cost is increased, and the operation reliability of the whole air conditioner is reduced.
Disclosure of Invention
The embodiment of the invention provides a fault detection method and device for an air conditioning unit, an air conditioner and a storage medium, which are used for comprehensively detecting the air conditioner, reducing the maintenance cost of a commercial air conditioner and improving the running reliability of the whole air conditioner.
In a first aspect, an embodiment of the present invention provides a fault detection method for an air conditioning unit, including:
when an internal fan of the air conditioner is started to a preset time, acquiring the outdoor environment temperature and the indoor environment temperature;
matching the outdoor environment temperature and the indoor environment temperature with a preset temperature interval respectively to determine a current detection mode of the air conditioner;
sequentially acquiring parameters corresponding to units to be detected in the air conditioner to obtain parameters of the units to be detected, and sequentially comparing the parameters of the units to be detected with parameter intervals corresponding to the current detection mode to judge whether each unit to be detected is in an abnormal state;
and if all the units to be tested are judged to be in the abnormal state, judging that the air conditioning unit is in the abnormal state, and starting the air conditioner to run.
In a second aspect, an embodiment of the present invention provides a fault detection device for an air conditioning unit, including:
the air conditioner comprises an ambient temperature acquisition unit, a control unit and a control unit, wherein the ambient temperature acquisition unit is used for acquiring outdoor ambient temperature and indoor ambient temperature when an internal fan of the air conditioner is started to preset time;
the detection mode determining unit is used for respectively matching the outdoor environment temperature and the indoor environment temperature with a preset temperature interval so as to obtain a current detection mode of the air conditioner;
the abnormal state judging unit is used for sequentially acquiring parameters corresponding to the units to be detected in the air conditioner to obtain parameters of the units to be detected, and sequentially comparing the parameters of the units to be detected with the parameter intervals corresponding to the current detection mode to judge whether each unit to be detected is in an abnormal state;
and the unit detection and judgment unit is used for judging that the air conditioning unit is in an abnormal state and starting the air conditioner to operate if all the units to be detected are judged to be in the abnormal state.
In a third aspect, an embodiment of the present invention provides an air conditioner, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the fault detection method for the air conditioning unit according to the first aspect when executing the computer program.
In a fourth aspect, the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and the computer program, when executed by a processor, causes the processor to execute the fault detection method for an air conditioning unit according to the first aspect.
The embodiment of the invention provides a fault detection method and device for an air conditioning unit, an air conditioner and a storage medium, wherein the method comprises the following steps: when an internal fan of the air conditioner is started to a preset time, acquiring the outdoor environment temperature and the indoor environment temperature; respectively matching the outdoor environment temperature and the indoor environment temperature with a preset temperature interval to determine the current detection mode of the air conditioner; sequentially acquiring parameters corresponding to units to be detected in the air conditioner to obtain parameters of the units to be detected, and sequentially comparing the parameters of the units to be detected with parameter intervals corresponding to a current detection mode to judge whether each unit to be detected is in an abnormal state; and if all the units to be tested are judged to be in the abnormal state, judging that the air conditioning unit is in the abnormal state, and starting the air conditioner to run. The embodiment of the invention can select different detection modes based on different environmental temperatures, sequentially detect the units to be detected in the air conditioner, and judge whether each unit to be detected is in an abnormal state one by one, thereby realizing the comprehensive detection of the air conditioner, reducing the maintenance cost of the commercial air conditioner and improving the operation reliability of the whole air conditioner.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a fault detection method for an air conditioning unit according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a fault detection method for an air conditioning unit according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a fault detection method for an air conditioning unit according to another embodiment of the present invention;
fig. 4 is a schematic flow chart of a fault detection method for an air conditioning unit according to another embodiment of the present invention;
fig. 5 is a schematic flowchart of a fault detection method for an air conditioning unit according to another embodiment of the present invention;
fig. 6 is a schematic flowchart of a fault detection method for an air conditioning unit according to another embodiment of the present invention;
fig. 7 is a schematic block diagram of a fault detection device of an air conditioning unit according to an embodiment of the present invention;
fig. 8 is a schematic block diagram of an air conditioner according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a fault detection method for an air conditioning unit according to an embodiment of the present invention. The fault detection method of the air conditioning unit provided by the embodiment of the invention is applied to an air conditioner.
S1, when an inner fan of the air conditioner is started to a preset time, obtaining the outdoor environment temperature and the indoor environment temperature.
In this embodiment, this application mainly detects to commercial air conditioner's important part, prevents that latent unusual the unit can not normal operating that leads to, causes the unit reliability to reduce. Therefore, when the air conditioner needs to be started, the unit of the air conditioner is detected firstly, and when the unit of the air conditioner is detected, the inner fan of the air conditioner is started to a preset time, and the indoor air outlet of the air conditioner is uniform and stable; and then the outdoor ambient temperature and the indoor ambient temperature at that time are acquired.
It should be noted that the preset time is set according to the actual condition of the fan, and the preset time is not limited herein, and in a specific embodiment, the ambient temperature is obtained after the internal fan is turned on for two minutes.
Referring to fig. 2, fig. 2 shows an embodiment of step S1, which is described in detail as follows:
s11: and when an instruction of starting the air conditioner is received, the internal fan is started, and the current time is recorded.
S12: and judging whether the inner fan is started to preset time or not based on the current time.
S13: when the inner fan is started to the preset time, the current temperature of the outer machine environment temperature sensing bulb is obtained and used as the outdoor environment temperature, and the current temperature of the air outlet temperature sensing bulb is obtained and used as the indoor environment temperature.
In this embodiment, when an instruction for starting the air conditioner is received, that is, when the air conditioner needs to be started, the internal fan is started, and the current time is recorded; and then recording the time interval of starting the internal fan in real time based on the current time. When the time interval reaches the preset time, the temperature measured by the external unit environment temperature sensing bulb can be regarded as the outdoor environment temperature because the compressor of the air conditioner is not started at the moment; and the temperature measured by the air-out temperature sensing bulb at the moment is taken as the indoor environment temperature.
Further, a specific embodiment before step S1 is also provided in the present application, which is detailed as follows:
and acquiring preset detection modes corresponding to different preset temperature intervals, and storing the preset detection modes, wherein the preset detection modes comprise parameter intervals when each unit to be detected is in normal operation.
Specifically, since the air conditioner is not determined in the after-sales use condition, the system parameters of the normal operation of the air conditioner under different indoor temperature intervals and different outdoor environment temperature intervals need to be matched in advance, so as to determine whether the unit is operated normally. Therefore, the air conditioner developer generates different detection modes according to different indoor temperature intervals and different outdoor environment temperature intervals. Each detection mode comprises a parameter range corresponding to the unit allowed by the air conditioner in normal operation, and each detection mode corresponds to a temperature interval.
In a specific embodiment, under the working conditions that the indoor temperature is 15-20 degrees and the outdoor temperature is 30-35 degrees, a set of parameters (including the frequency of the compressor, the opening degree of the electronic expansion valve, the high pressure and the low pressure) of normal operation of the unit are matched, and the detection mode is set as the detection mode a. In the subsequent fault detection of the air conditioning unit, if 20 degrees indoor and 35 degrees outdoor are detected, and the temperature just falls in the temperature interval of the detection mode A, the unit uses the set parameters of the detection mode A to judge whether the unit normally operates.
And S2, respectively matching the outdoor environment temperature and the indoor environment temperature with a preset temperature interval to determine the current detection mode of the air conditioner.
In this embodiment, since the detection modes corresponding to the respective temperature intervals are already stored in the air conditioner, when the outdoor ambient temperature and the indoor ambient temperature at which the current air conditioner is located are obtained, the outdoor ambient temperature and the indoor ambient temperature are respectively matched with the preset temperature intervals, and the temperature interval in which the ambient temperature at that time falls is identified, so as to determine which detection mode is adopted.
And S3, sequentially acquiring parameters corresponding to the units to be detected in the air conditioner to obtain the parameters of the units to be detected, and sequentially comparing the parameters of the units to be detected with the parameter intervals corresponding to the current detection mode to judge whether each unit to be detected is in an abnormal state.
In this embodiment, since the current detection mode includes the parameter interval corresponding to each unit to be detected, when each parameter corresponding to one unit to be detected is obtained, the parameter of the unit to be detected is compared with the parameter interval corresponding to the current detection mode. And if the parameter of the unit to be detected is not in the parameter interval corresponding to the current detection mode, judging that the unit to be detected is in an abnormal state, generating and sending alarm information corresponding to the unit to be detected, and then stopping the air conditioner. And if the parameter of the unit to be detected is in the parameter interval corresponding to the current detection mode, judging that the unit to be detected has no abnormal state, and continuously detecting whether the next unit to be detected is in the abnormal state until all the units to be detected are detected.
The unit to be tested comprises a motor, a filter, a compressor, a refrigerant quantity and a temperature sensing bulb.
Referring to fig. 3, fig. 3 shows an embodiment of step S3, which is described in detail as follows:
s31: and acquiring a current value and a voltage value of the motor, and judging whether the current value and the voltage value of the motor are in a first preset current interval and a first preset voltage interval of the current detection mode so as to judge whether the motor is in an abnormal state.
Referring to fig. 4, fig. 4 shows an embodiment of step S31, which is described in detail as follows:
s311: and acquiring the rotating speed of the inner fan and the rotating speed of the outer fan corresponding to the current detection mode.
S312: the inner fan and the outer fan of the air conditioner are correspondingly adjusted to be the rotating speed of the inner fan and the rotating speed of the outer fan.
S313: and acquiring a current value and a voltage value of the inner fan and acquiring a current value and a voltage value of the outer fan.
S314: and judging whether the current value and the voltage value of the inner fan are in a first preset current interval and a first preset voltage interval of the inner fan in the current detection mode so as to judge whether the inner fan is in an abnormal state.
S315: and judging whether the current value and the voltage value of the outer fan are in a first preset current interval and a first preset voltage interval of the outer fan in the current detection mode so as to judge whether the outer fan is in an abnormal state.
In the present embodiment, in the current detection mode, it is specified at which rotation speed of the inner and outer fans the fault detection is performed for the inner and outer fans. Therefore, the rotating speed of the inner fan and the rotating speed of the outer fan corresponding to the current detection mode are obtained firstly, then the inner fan and the outer fan are adjusted to the corresponding rotating speeds, and when the rotating speeds of the inner fan and the outer fan reach the specified rotating speeds, the current value and the voltage value of the inner fan at the moment are obtained, and the current value and the voltage value of the outer fan are obtained. The current detection mode comprises a first preset current interval and a first preset voltage interval of the inner fan, and comprises a first preset current interval and a first preset voltage interval of the outer fan. Therefore, whether the current value and the voltage value of the inner fan are in a first preset current interval and a first preset voltage interval of the inner fan in the current detection mode or not is judged, if yes, the inner fan is judged to be in an abnormal state, and if not, the inner fan is judged to be in an abnormal state. Similarly, whether the current value and the voltage value of the outer fan are in the first preset current interval and the voltage interval of the outer fan in the current detection mode is judged, if yes, the outer fan is judged to be in an abnormal state, and if not, the outer fan is judged to be in an abnormal state.
It should be noted that the first preset current interval and the first preset voltage interval include a first preset current interval and a first preset voltage interval of the inner fan, and include a first preset current interval and a first preset voltage interval of the outer fan, and the preset current interval and the voltage interval are set according to actual conditions, which is not limited herein. Wherein, the motor includes interior fan and outer fan.
S32: when the motor is in an abnormal state, acquiring the pressure difference between the front and the back of the filter, and judging whether the pressure difference is in a pressure difference setting interval of the current detection mode so as to judge whether the filter is in an abnormal state.
In this embodiment, when the motor determines that there is no abnormality, it is necessary to perform failure detection on the filter. In the embodiment of the application, the pressure difference switch is utilized to detect the pressure difference between the front part and the rear part of the condenser and the front part and the rear part of the evaporator, so that the pressure difference between the front part and the rear part of the filter can be monitored. When the pressure difference detected by the pressure difference switch reaches the pressure difference setting interval of the current detection mode, judging that the filter is in an abnormal state; otherwise, the filter is in an abnormal state, and the user should be reminded that the filter screen of the filter needs to be replaced.
The differential pressure setting section is set according to actual conditions, and is not limited here.
S33: and when the filter is in an abnormal state, acquiring the current value and the voltage value of the compressor, and judging whether the current value and the voltage value of the compressor are in a second preset current interval and a second preset voltage interval of the current detection mode so as to judge whether the compressor is in an abnormal state.
Referring to fig. 5, fig. 5 shows an embodiment of step S33, which is described in detail as follows:
s331: and when the filter is in an abnormal state, acquiring the frequency of the compressor and the opening of the electronic expansion valve corresponding to the current detection mode.
S332: the compressor is adjusted to a compressor frequency and the electronic expansion valve is adjusted to an electronic expansion valve opening.
S333: and acquiring a current value and a voltage value of the compressor, and judging whether the current value and the voltage value of the compressor are in a second preset current interval and a second preset voltage interval of the current detection mode so as to judge whether the compressor is in an abnormal state.
In this embodiment, when the filter is in an abnormal state, the fault detection needs to be performed on the compressor. The compressor frequency and the electronic expansion valve opening degree are specified in the current detection mode, the compressor and the electronic expansion valve of the air conditioner at the moment are adjusted to the corresponding compressor frequency and the electronic expansion valve opening degree, and then the current value and the voltage value of the compressor at the moment are obtained. In a specific embodiment, the compressor operation current and voltage are returned to the voltage and current of the compressor driving plate, and the corresponding values of the current and voltage at the moment are used as the current value and the voltage value of the compressor of the application. Then judging whether the current value and the voltage value of the compressor are in a second preset current interval and a second preset voltage interval of the current detection mode, and if so, judging that the compressor is in an abnormal state; if the compressor is not in the corresponding section, the compressor is judged to be in an abnormal state.
S34: when the compressor is in an abnormal state, the pressures of the front end and the rear end of the compressor are obtained to obtain a high pressure and a low pressure, and whether the high pressure and the low pressure are in a pressure interval corresponding to the current detection mode is judged to judge whether the refrigerant quantity is in an abnormal state.
In this embodiment, when the compressor is in an abnormal state, the refrigerant amount needs to be detected. High-pressure and low-pressure at the front end and the rear end of the compressor are detected through high-pressure and low-pressure sensors. Then judging whether the high pressure and the low pressure are in a pressure interval corresponding to the current detection mode, and if so, judging that the refrigerant quantity is in an abnormal state; if the refrigerant quantity is not in the corresponding pressure interval, the refrigerant quantity is judged to be in an abnormal state. The refrigerant amount refers to the refrigerant filling amount.
S35: when the refrigerant quantity is in the abnormal state, the temperature of the thermal bulb is obtained, and whether the temperature of the thermal bulb is in the temperature interval corresponding to the current detection mode or not is judged so as to judge whether the thermal bulb is in the abnormal state or not.
The temperature sensing bulb comprises an evaporator inlet pipe temperature sensing bulb, an evaporator outlet pipe temperature sensing bulb, an exhaust temperature sensing bulb and a condenser pipe temperature sensing bulb.
In this embodiment, when the refrigerant volume is in the abnormal state, fault detection is performed on various thermal bulbs to obtain the temperature in each thermal bulb, and then whether the temperature of the thermal bulb is in the temperature range corresponding to the current detection mode is determined to determine whether the thermal bulb is in the abnormal state. As long as the temperature in the temperature sensing bulb can be measured, the temperature sensing bulb is in an abnormal state, so that the temperature range corresponding to the current detection mode is the temperature range among all the components when the air conditioner works.
And S4, if all the units to be tested are judged to be in the abnormal state, judging that the air conditioning unit is in the abnormal state, and starting the air conditioner to operate.
In this embodiment, if all the units to be tested are in the abnormal state, it is indicated that the air conditioning unit is in the abnormal state, and the air conditioning unit can normally operate, so that the air conditioner is started to operate. Furthermore, after the air conditioner is started, the technical means of the method can be adopted again to detect the air conditioner again, so that the fault self-checking function of the unit which starts to operate every time can be ensured, the operation reliability of the whole machine is enhanced, and the maintenance and operation cost is reduced.
Referring to fig. 6, fig. 6 shows an embodiment of step S4, which is described in detail as follows:
s41: and if the unit to be tested is in the abnormal state, taking the unit to be tested in the abnormal state as the abnormal unit.
S42: and generating alarm information corresponding to the abnormal unit.
S43: and alarming based on the alarm information, and stopping the air conditioner.
In this embodiment, if any unit to be tested is in an abnormal state, the unit to be tested in the abnormal state is taken as an abnormal unit, alarm information corresponding to the abnormal unit is generated, and finally, an alarm is given based on the alarm information, and the air conditioner is stopped. For example, if the current value and the voltage value of the inner fan and the outer fan are not in the corresponding interval, it is determined that the motor is abnormal, then alarm information corresponding to the motor abnormality is generated, and the air conditioner is stopped, so that the user can remove the air conditioner fault, and the air conditioner is started again.
In the embodiment, when an internal fan of the air conditioner is started to reach the preset time, the outdoor environment temperature and the indoor environment temperature are obtained; respectively matching the outdoor environment temperature and the indoor environment temperature with a preset temperature interval to determine the current detection mode of the air conditioner; sequentially acquiring parameters corresponding to units to be detected in the air conditioner to obtain the parameters of the units to be detected, and sequentially comparing the parameters of the units to be detected with the parameter intervals corresponding to the current detection mode to judge whether each unit to be detected is in an abnormal state; and if all the units to be tested are judged to be in the abnormal state, judging that the air conditioning unit is in the abnormal state, and starting the air conditioner to run. According to the embodiment of the invention, different detection modes can be selected based on different environmental temperatures, the units to be detected in the air conditioner are sequentially detected, and whether each unit to be detected is in an abnormal state or not is judged one by one, so that the air conditioner is comprehensively detected, the maintenance cost of a commercial air conditioner is reduced, and the operation reliability of the whole air conditioner is improved.
The embodiment of the invention also provides a fault detection device of the air conditioning unit, which is used for executing any embodiment of the fault detection method of the air conditioning unit. Specifically, referring to fig. 7, fig. 7 is a schematic block diagram of a fault detection device of an air conditioning unit according to an embodiment of the present invention.
As shown in fig. 7, the fault detection device 5 of the air conditioning unit includes an ambient temperature acquisition unit 51, a detection mode determination unit 52, an abnormal state determination unit 53, and a unit detection determination unit 54.
An ambient temperature obtaining unit 51 for obtaining an outdoor ambient temperature and an indoor ambient temperature when an internal fan of the air conditioner is turned on for a preset time;
a detection mode determining unit 52, configured to match the outdoor environment temperature and the indoor environment temperature with a preset temperature interval, respectively, so as to obtain a current detection mode of the air conditioner;
the abnormal state judging unit 53 is configured to sequentially obtain parameters corresponding to the units to be detected in the air conditioner to obtain parameters of the units to be detected, and sequentially compare the parameters of the units to be detected with a parameter interval corresponding to the current detection mode to judge whether each unit to be detected is in an abnormal state;
and the unit detection judging unit 54 is configured to judge that the air conditioning unit is in an abnormal state if all the units to be detected are judged to be in the abnormal state, and start up the air conditioner.
Further, the ambient temperature acquisition unit 51 includes:
the internal fan starting unit is used for starting the internal fan when receiving an air conditioner starting instruction and recording the current time;
the time judging unit is used for judging whether the inner fan is started to reach the preset time or not based on the current time;
and the temperature acquisition unit is used for acquiring the current temperature of the outer machine environment temperature sensing bulb as the outdoor environment temperature when the inner fan is started to the preset time, and acquiring the current temperature of the air outlet temperature sensing bulb as the indoor environment temperature.
Further, the ambient temperature acquiring unit 51 previously includes:
and the detection mode storage unit is used for acquiring preset detection modes corresponding to different preset temperature intervals and storing the preset detection modes, wherein the preset detection modes comprise parameter intervals when each unit to be detected is in normal operation.
Further, the abnormal state judgment unit 53 includes:
the motor detection unit is used for acquiring a current value and a voltage value of the motor and judging whether the current value and the voltage value of the motor are in a first preset current interval and a first preset voltage interval of a current detection mode so as to judge whether the motor is in an abnormal state;
the filter detection unit is used for acquiring the pressure difference before and after the filter when the motor is in an abnormal state, and judging whether the pressure difference is in a pressure difference setting interval of a current detection mode so as to judge whether the filter is in an abnormal state;
the compressor detection unit is used for acquiring the current value and the voltage value of the compressor when the filter is in an abnormal state, and judging whether the current value and the voltage value of the compressor are in a second preset current interval and a second preset voltage interval of the current detection mode so as to judge whether the compressor is in the abnormal state;
the refrigerant quantity detection unit is used for acquiring pressures at the front end and the rear end of the compressor when the compressor is in an abnormal state, obtaining a high pressure and a low pressure, and judging whether the high pressure and the low pressure are in a pressure interval corresponding to a current detection mode so as to judge whether the refrigerant quantity is in an abnormal state;
and the temperature sensing bulb detection unit is used for acquiring the temperature of the temperature sensing bulb when the refrigerant quantity is in a no-abnormal state, judging whether the temperature of the temperature sensing bulb is in a temperature interval corresponding to the current detection mode or not, and judging whether the temperature sensing bulb is in an abnormal state or not, wherein the temperature sensing bulb comprises an evaporator inlet pipe temperature sensing bulb, an evaporator outlet pipe temperature sensing bulb, an exhaust temperature sensing bulb and a condenser pipe temperature sensing bulb.
Further, the motor detection unit includes:
the fan rotating speed acquisition unit is used for acquiring the rotating speed of the inner fan and the rotating speed of the outer fan corresponding to the current detection mode;
the fan rotating speed adjusting unit is used for correspondingly adjusting the inner fan and the outer fan of the air conditioner into the rotating speed of the inner fan and the rotating speed of the outer fan;
the current value acquisition unit is used for acquiring a current value and a voltage value of the inner fan and acquiring a current value and a voltage value of the outer fan;
the first motor judgment unit is used for judging whether the current value and the voltage value of the inner fan are in a first preset current interval and a first preset voltage interval of the inner fan in the current detection mode so as to judge whether the inner fan is in an abnormal state;
and the second motor judgment unit is used for judging whether the current value and the voltage value of the outer fan are in a first preset current interval and a first preset voltage interval of the outer fan in the current detection mode so as to judge whether the outer fan is in an abnormal state.
Further, the compressor detecting unit includes:
the compressor frequency acquisition unit is used for acquiring the compressor frequency and the opening of the electronic expansion valve corresponding to the current detection mode when the filter is in an abnormal state;
a compressor frequency adjusting unit for adjusting a compressor to the compressor frequency and an electronic expansion valve to an electronic expansion valve opening degree;
and the compressor state judging unit is used for acquiring the current value and the voltage value of the compressor and judging whether the current value and the voltage value of the compressor are in a second preset current interval and a second preset voltage interval of the current detection mode so as to judge whether the compressor is in an abnormal state.
Further, the abnormal state judgment unit 53 is followed by:
the abnormal unit determining unit is used for taking the unit to be tested in the abnormal state as the abnormal unit if the unit to be tested is in the abnormal state;
the alarm information generating unit is used for generating alarm information corresponding to the abnormal unit;
and the shutdown processing unit is used for giving an alarm based on the alarm information and performing shutdown processing on the air conditioner.
In the embodiment, when the internal fan of the air conditioner is started to the preset time, the outdoor environment temperature and the indoor environment temperature are obtained; respectively matching the outdoor environment temperature and the indoor environment temperature with a preset temperature interval to determine the current detection mode of the air conditioner; sequentially acquiring parameters corresponding to units to be detected in the air conditioner to obtain parameters of the units to be detected, and sequentially comparing the parameters of the units to be detected with parameter intervals corresponding to a current detection mode to judge whether each unit to be detected is in an abnormal state; and if all the units to be tested are judged to be in the abnormal state, judging that the air conditioning unit is in the abnormal state, and starting the air conditioner to run. According to the embodiment of the invention, different detection modes can be selected based on different environmental temperatures, the units to be detected in the air conditioner are sequentially detected, and whether each unit to be detected is in an abnormal state or not is judged one by one, so that the air conditioner is comprehensively detected, the maintenance cost of a commercial air conditioner is reduced, and the operation reliability of the whole air conditioner is improved.
The fault detection device of the air conditioning unit may be implemented in the form of a computer program that can be run on the air conditioner as shown in fig. 8.
Referring to fig. 8, fig. 8 is a schematic block diagram of an air conditioner according to an embodiment of the present invention. The air conditioner 500 includes a processor 502, a memory, which may include a storage medium 503 and an internal memory 504, and a network interface 505 connected by a device bus 501.
The storage medium 503 may store an operating device 5031 and a computer program 5032. The computer program 5032, when executed, may cause the processor 502 to perform a fault detection method for an air conditioning unit.
The processor 502 is used to provide computing and control capabilities to support the operation of the overall air conditioner 500.
The internal memory 504 provides an environment for running the computer program 5032 in the storage medium 503, and when the computer program 5032 is executed by the processor 502, the processor 502 may execute a fault detection method for the air conditioning unit.
The network interface 505 is used for network communication, such as providing transmission of data information. It will be understood by those skilled in the art that the configuration shown in fig. 5 is a block diagram of only a portion of the configuration associated with the inventive arrangements and does not constitute a limitation of the air conditioner 500 to which the inventive arrangements are applied, and that a particular air conditioner 500 may include more or less components than those shown, or combine certain components, or have a different arrangement of components.
The processor 502 is configured to run the computer program 5032 stored in the memory, so as to implement the fault detection method for the air conditioning unit disclosed in the embodiment of the present invention.
Those skilled in the art will appreciate that the embodiment of the air conditioner shown in fig. 5 is not meant to be limiting as to the specific configuration of the air conditioner, and in other embodiments, the air conditioner may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. For example, in some embodiments, the air conditioner may only include a memory and a processor, and in such embodiments, the structures and functions of the memory and the processor are the same as those of the embodiment shown in fig. 5, which are not repeated herein.
It should be understood that, in the embodiment of the present invention, the processor 502 may be a Central Processing Unit (CPU), and the processor 502 may also be other general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. Wherein a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
In another embodiment of the invention, a computer-readable storage medium is provided. The computer-readable storage medium may be a nonvolatile computer-readable storage medium or a volatile computer-readable storage medium. The computer readable storage medium stores a computer program, wherein the computer program, when executed by the processor, implements the method for detecting a fault of an air conditioning unit disclosed in the embodiments of the present invention.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described devices, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided by the present invention, it should be understood that the disclosed apparatus, device and method can be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of units is only a logical division, and there may be other divisions when the actual implementation is implemented, or units having the same function may be grouped into one unit, for example, multiple units or components may be combined or integrated into another device, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a separate product, may be stored in a storage medium. Based on such understanding, the technical solution of the present invention essentially or partly contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a background server, or a network device, etc.) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a magnetic disk, or an optical disk.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A fault detection method of an air conditioning unit is characterized by comprising the following steps:
when an internal fan of the air conditioner is started to a preset time, acquiring the outdoor environment temperature and the indoor environment temperature;
matching the outdoor environment temperature and the indoor environment temperature with a preset temperature interval respectively to determine a current detection mode of the air conditioner;
sequentially acquiring parameters corresponding to units to be detected in the air conditioner to obtain parameters of the units to be detected, and sequentially comparing the parameters of the units to be detected with parameter intervals corresponding to the current detection mode to judge whether each unit to be detected is in an abnormal state;
and if all the units to be tested are judged to be in the abnormal state, judging that the air conditioning unit is in the abnormal state, and starting the air conditioner to run.
2. The method for detecting faults of air conditioning units according to claim 1, wherein when an internal fan of an air conditioner is started for a preset time, the method for acquiring the outdoor environment temperature and the indoor environment temperature comprises the following steps:
when receiving the instruction of starting the air conditioner, starting the inner fan, and recording the current time;
judging whether the inner fan is started to the preset time or not based on the current time;
and when the inner fan is started to the preset time, acquiring the current temperature of the outer machine environment temperature sensing bulb as the outdoor environment temperature, and acquiring the current temperature of the air outlet temperature sensing bulb as the indoor environment temperature.
3. The method for detecting faults of an air conditioning unit according to claim 1, wherein when an inner fan of an air conditioner is started to a preset time, before the outdoor environment temperature and the indoor environment temperature are obtained, the method further comprises the following steps:
and acquiring different preset detection modes corresponding to the preset temperature intervals, and storing the preset detection modes, wherein the preset detection modes comprise parameter intervals when each unit to be detected is in normal operation.
4. The fault detection method of the air conditioning unit according to claim 1, wherein the unit to be tested comprises a motor, a filter, a compressor, a refrigerant quantity and a temperature sensing bulb; the method includes the steps of sequentially acquiring parameters corresponding to units to be detected in the air conditioner, acquiring parameters of the units to be detected, and sequentially comparing the parameters of the units to be detected with parameter intervals corresponding to the current detection mode to judge whether each unit to be detected is in an abnormal state or not:
acquiring a current value and a voltage value of the motor, and judging whether the current value and the voltage value of the motor are in a first preset current interval and a first preset voltage interval of the current detection mode so as to judge whether the motor is in an abnormal state;
when the motor is in an abnormal state, acquiring the pressure difference between the front and the back of the filter, and judging whether the pressure difference is in a pressure difference setting interval of the current detection mode so as to judge whether the filter is in an abnormal state;
when the filter is in an abnormal state, acquiring a current value and a voltage value of the compressor, and judging whether the current value and the voltage value of the compressor are in a second preset current interval and a second preset voltage interval of the current detection mode so as to judge whether the compressor is in an abnormal state;
when the compressor is in an abnormal state, acquiring pressures at the front end and the rear end of the compressor to obtain a high pressure and a low pressure, and judging whether the high pressure and the low pressure are in a pressure interval corresponding to the current detection mode to judge whether the refrigerant quantity is in an abnormal state;
and when the refrigerant quantity is in an abnormal state, acquiring the temperature of the thermal bulb, and judging whether the temperature of the thermal bulb is in a temperature interval corresponding to the current detection mode to judge whether the thermal bulb is in an abnormal state, wherein the thermal bulb comprises an evaporator inlet pipe thermal bulb, an evaporator outlet pipe thermal bulb, an exhaust thermal bulb and a condenser pipe thermal bulb.
5. The fault detection method of an air conditioning unit according to claim 4, wherein the motor includes an inner fan and an outer fan; the acquiring a current value and a voltage value of the motor, and determining whether the current value and the voltage value of the motor are in a first preset current interval and a first preset voltage interval of the current detection mode to determine whether the motor is in an abnormal state, includes:
acquiring the rotating speed of an inner fan and the rotating speed of an outer fan corresponding to the current detection mode;
correspondingly adjusting the inner fan and the outer fan of the air conditioner to the rotating speed of the inner fan and the rotating speed of the outer fan;
acquiring a current value and a voltage value of the inner fan, and acquiring a current value and a voltage value of the outer fan;
judging whether the current value and the voltage value of the inner fan are in a first preset current interval and a first preset voltage interval of the inner fan in the current detection mode so as to judge whether the inner fan is in an abnormal state;
and judging whether the current value and the voltage value of the outer fan are in a first preset current interval and a first preset voltage interval of the outer fan in the current detection mode so as to judge whether the outer fan is in an abnormal state.
6. The method as claimed in claim 4, wherein when the filter is in an abnormal state, the step of obtaining a current value and a voltage value of the compressor and determining whether the current value and the voltage value of the compressor are in a second preset current interval and a second preset voltage interval of the current detection mode to determine whether the compressor is in the abnormal state comprises:
when the filter is in an abnormal state, acquiring the frequency of the compressor and the opening of the electronic expansion valve corresponding to the current detection mode;
adjusting the compressor to the compressor frequency and an electronic expansion valve to the electronic expansion valve opening;
and acquiring a current value and a voltage value of the compressor, and judging whether the current value and the voltage value of the compressor are in a second preset current interval and a second preset voltage interval of the current detection mode so as to judge whether the compressor is in an abnormal state.
7. The method for detecting faults of air conditioning units according to any one of claims 1 to 6, wherein the method sequentially obtains parameters corresponding to units to be detected in the air conditioner to obtain parameters of the units to be detected, and sequentially compares the parameters of the units to be detected with parameter intervals corresponding to the current detection mode to judge whether each unit to be detected is in an abnormal state, and the method further comprises:
if the unit to be tested is in the abnormal state, taking the unit to be tested in the abnormal state as an abnormal unit;
generating alarm information corresponding to the abnormal unit;
and alarming based on the alarm information, and stopping the air conditioner.
8. A fault detection device of an air conditioning unit is characterized by comprising:
the air conditioner comprises an ambient temperature acquisition unit, a control unit and a control unit, wherein the ambient temperature acquisition unit is used for acquiring outdoor ambient temperature and indoor ambient temperature when an internal fan of the air conditioner is started to preset time;
the detection mode determining unit is used for respectively matching the outdoor environment temperature and the indoor environment temperature with a preset temperature interval so as to obtain a current detection mode of the air conditioner;
the abnormal state judging unit is used for sequentially acquiring parameters corresponding to the units to be detected in the air conditioner to obtain parameters of the units to be detected, and sequentially comparing the parameters of the units to be detected with the parameter intervals corresponding to the current detection mode to judge whether each unit to be detected is in an abnormal state;
and the unit detection and judgment unit is used for judging that the air conditioning unit is in an abnormal state and starting the air conditioner to operate if all the units to be detected are judged to be in the abnormal state.
9. An air conditioner comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method for detecting a fault in an air conditioning unit according to any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when executed by a processor, causes the processor to execute the fault detection method of an air conditioning unit according to any one of claims 1 to 7.
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