CN115257281A - Parking air conditioner, fluorine deficiency detection method and device thereof and storage medium - Google Patents
Parking air conditioner, fluorine deficiency detection method and device thereof and storage medium Download PDFInfo
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- CN115257281A CN115257281A CN202210811082.2A CN202210811082A CN115257281A CN 115257281 A CN115257281 A CN 115257281A CN 202210811082 A CN202210811082 A CN 202210811082A CN 115257281 A CN115257281 A CN 115257281A
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 116
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 116
- 239000011737 fluorine Substances 0.000 title claims abstract description 116
- 238000001514 detection method Methods 0.000 title claims abstract description 68
- 230000007812 deficiency Effects 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 claims description 49
- 230000002950 deficient Effects 0.000 claims description 28
- 238000004590 computer program Methods 0.000 claims description 15
- 238000005057 refrigeration Methods 0.000 claims description 10
- 239000003570 air Substances 0.000 description 157
- 239000003507 refrigerant Substances 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
- B60H1/00585—Means for monitoring, testing or servicing the air-conditioning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
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Abstract
The application provides a parking air conditioner and a fluorine deficiency detection method, a fluorine deficiency detection device and a storage medium thereof, wherein the fluorine deficiency detection method of the parking air conditioner obtains an input voltage value, a working frequency and a working current value of a compressor in the parking air conditioner; determining a protection current threshold of the compressor according to the input voltage value; acquiring an internal environment temperature value and an internal coil temperature value, and calculating a temperature difference value between the internal environment temperature value and the internal coil temperature value; and if the working frequency of the compressor is greater than a preset frequency threshold value, the working current value is less than a protection current threshold value and the temperature difference value is less than a preset temperature difference threshold value, determining that the parking air conditioner is in a fluorine-lacking state. By acquiring the input voltage value of the compressor, and combining the input voltage value with the determined protection current threshold value, fluorine deficiency detection is carried out according to the working frequency, the working current value, the internal environment temperature value and the temperature difference value between the internal coil temperature values, and the accuracy of fluorine deficiency detection can be improved.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to a parking air conditioner, a fluorine-lack detection method and device of the parking air conditioner and a computer readable storage medium (storage medium).
Background
The parking air conditioner is characterized in that when the vehicle is parked for waiting and has a rest, the air conditioner can continuously operate through a storage battery or other driving power supplies in the vehicle, and parameters such as temperature, humidity and flow rate of ambient air in the vehicle are adjusted and controlled. Because the parking air conditioner is installed on the automobile, the working environment has the condition of long-time jolt and vibration, the welding point of the internal pipeline of the parking air conditioner is easy to break, and the refrigerant in the parking air conditioner can be leaked to different degrees in the using process. The refrigerant leakage causes fluorine shortage, the refrigeration effect of the parking air conditioner is influenced if the refrigerant leakage is small, and the compressor is damaged if the refrigerant leakage is large.
Disclosure of Invention
In view of the above, it is desirable to provide a method and a device for detecting fluorine deficiency in a parking air conditioner, and a storage medium.
In a first aspect, the present application provides a method for detecting fluorine deficiency of a parking air conditioner, the method comprising:
acquiring an input voltage value, a working frequency and a working current value of a compressor in the parking air conditioner;
determining a protection current threshold of the compressor according to the input voltage value;
collecting an internal environment temperature value and an internal coil temperature value, and calculating a temperature difference value between the internal environment temperature value and the internal coil temperature value;
and if the working frequency of the compressor is greater than a preset frequency threshold value, the working current value is less than a protection current threshold value and the temperature difference value is less than a preset temperature difference threshold value, determining that the parking air conditioner is in a fluorine-lacking state.
In some embodiments of the present application, determining a protection current threshold of the compressor based on the input voltage value includes:
comparing the input voltage value with a preset high voltage threshold value and a preset low voltage threshold value;
if the input voltage value is larger than the preset high voltage threshold value, determining the protection current threshold value as a first current value;
if the input voltage value is smaller than or equal to the high voltage threshold value and larger than or equal to the low voltage threshold value, determining the protection current threshold value as a second current value;
and if the input voltage value is smaller than the low voltage threshold value, determining the protection current threshold value as a third current value.
In some embodiments of the present application, after the step of determining that the parking air conditioner is in the fluorine-deficient state, the method further includes:
and controlling a compressor and an outer fan in the parking air conditioner to be shut down.
In some embodiments of the present application, after controlling the compressor and the external fan in the parking air conditioner to stop, the method includes:
updating the shutdown times of the compressor;
and if the shutdown frequency does not reach the preset shutdown frequency threshold value, controlling to start the compressor and the outer fan after the first time length.
In some embodiments of the present application, after calculating the temperature difference between the internal environment temperature value and the internal coil temperature value, the method further includes:
if the working frequency of the compressor is less than or equal to a preset frequency threshold value, the working current value is greater than or equal to a protection current threshold value or the temperature difference value is less than or equal to a preset temperature difference threshold value, acquiring the working duration of the compressor;
and if the working duration is longer than a preset duration threshold, resetting the shutdown times of the compressor.
In some embodiments of the present application, updating the number of shutdowns of the compressor comprises:
adding the shutdown times of the compressor with a preset value to obtain a sum; and
the value of the number of times of shutdown of the compressor is updated to a sum value.
In some embodiments of the present application, obtaining an input voltage value, an operating frequency, and an operating current value of a compressor in a parking air conditioner includes:
responding to a refrigeration mode starting instruction, and controlling to start an outer fan in the parking air conditioner;
after the outer fan continuously works for a second time, controlling to start a compressor of the parking air conditioner;
and after the compressor continuously works for a third time, acquiring an input voltage value, a working frequency and a working current value of the compressor in the parking air conditioner.
In a second aspect, the present application provides a fluorine deficiency detection device for a parking air conditioner, the device comprising:
the working parameter acquisition module is used for acquiring an input voltage value, a working frequency and a working current value of a compressor in the parking air conditioner;
the protection current threshold value determining module is used for determining a protection current threshold value of the compressor according to the input voltage value;
the temperature value acquisition module is used for acquiring an internal environment temperature value and an internal coil temperature value and calculating a temperature difference value between the internal environment temperature value and the internal coil temperature value;
and the fluorine lack detection module is used for determining that the parking air conditioner is in a fluorine lack state when the working frequency of the compressor is greater than a preset frequency threshold value, the working current value is less than the protection current threshold value and the temperature difference value is less than a preset temperature difference threshold value.
In a third aspect, the present application further provides a parking air conditioner, including:
one or more processors;
a memory; and
one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement a fluorine deficiency detection method of a parking air conditioner.
In a fourth aspect, the present application further provides a computer readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to perform the steps in the fluorine deficiency detection method of a parking air conditioner.
In a fifth aspect, embodiments of the present application provide a computer program product or a computer program comprising computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the method provided by the first aspect.
According to the fluorine deficiency detection method and device for the parking air conditioner, the parking air conditioner and the storage medium, the input voltage value, the working frequency and the working current value of the compressor in the parking air conditioner are obtained; determining a protection current threshold value of the compressor according to the input voltage value; collecting an internal environment temperature value and an internal coil temperature value, and calculating a temperature difference value between the internal environment temperature value and the internal coil temperature value; and if the working frequency of the compressor is greater than a preset frequency threshold value, the working current value is less than a protection current threshold value and the temperature difference value is less than a preset temperature difference threshold value, determining that the parking air conditioner is in a fluorine-lacking state. The total power is unchanged in the actual operation process of the parking air conditioner, when the power supply voltage, namely the input voltage value, is increased, the working current of the compressor is reduced, and on the contrary, when the power supply voltage, namely the input voltage value, is reduced, the working current of the compressor is increased. Therefore, by obtaining the input voltage value of the compressor and combining the input voltage value with the determined protection current threshold value, fluorine deficiency detection is carried out according to the size relation among the working frequency, the working current value, the internal environment temperature value, the temperature difference value between the internal coil temperature values, the preset frequency threshold value, the protection current threshold value and the preset temperature difference threshold value, and the accuracy of fluorine deficiency detection can be improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 only some embodiments of the present application, 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 view of a method for detecting fluorine deficiency in a parking air conditioner according to an embodiment of the present application;
FIG. 2 is a schematic flow chart illustrating a method for detecting lack of fluorine in a parking air conditioner according to an embodiment of the present application;
FIG. 3 is a schematic structural view of a parking air conditioner in the embodiment of the present application;
FIG. 4 is a schematic flow chart illustrating another method for detecting fluorine deficiency in a parking air conditioner according to an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of a fluorine deficiency detection device of a parking air conditioner in an embodiment of the present application;
fig. 6 is a schematic structural diagram of a computer device in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, the word "for example" is used to mean "serving as an example, instance, or illustration". Any embodiment described herein as "for example" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
The method for detecting the lack of fluorine of the parking air conditioner provided by the embodiment of the application can be applied to a system for detecting the lack of fluorine of the parking air conditioner shown in fig. 1. The system for detecting fluorine deficiency of the parking air conditioner can comprise the parking air conditioner 100 and a fluorine deficiency detection end 200, wherein specifically, the fluorine deficiency detection end 200 obtains an input voltage value, a working frequency and a working current value of a compressor in the parking air conditioner 100; determining a protection current threshold of the compressor according to the input voltage value; collecting an internal environment temperature value and an internal coil temperature value, and calculating a temperature difference value between the internal environment temperature value and the internal coil temperature value; and if the working frequency of the compressor is greater than the preset frequency threshold, the working current value is less than the protection current threshold and the temperature difference value is less than the preset temperature difference threshold, determining that the parking air conditioner 100 is in a fluorine-lacking state.
Those skilled in the art will understand that the application environment shown in fig. 1 is only one application scenario related to the present application, and does not constitute a limitation on the application scenario of the present application, and that other application environments may further include more or less computer devices than those shown in fig. 1, for example, only 1 parking air conditioner 100 is shown in fig. 1, and it is understood that the fluorine-deficient detection system of the parking air conditioner may further include one or more other servers, which is not limited herein. In addition, as shown in fig. 1, the fluorine deficiency detection system of the parking air conditioner may further include a memory for storing data, such as air conditioning control parameters of different air conditioning unit types.
It should be further noted that the scenario diagram of the fluorine-deficient detection system of the parking air conditioner shown in fig. 1 is only an example, and the fluorine-deficient detection system and the scenario of the parking air conditioner described in the embodiment of the present invention are for more clearly illustrating the technical solution of the embodiment of the present invention, and do not constitute a limitation to the technical solution provided by the embodiment of the present invention.
Referring to fig. 2, an embodiment of the present application provides a method for detecting fluorine deficiency in a parking air conditioner, which is mainly exemplified by applying the method to the fluorine deficiency detection terminal 200 in fig. 1, and the method includes steps S210 to S240 as follows:
and S210, acquiring an input voltage value, an operating frequency and an operating current value of a compressor in the parking air conditioner.
The parking air conditioner is powered by a direct current power supply such as a storage battery and the like through a power line, and the parking air conditioner can be powered by different direct current power supplies such as 12 volts, 24 volts, 36 volts, 48 volts and the like. The input voltage value refers to a voltage value which is actually input into the parking air conditioner when a storage battery or other driving power supplies are used; specifically, a voltage detection module may be provided, by which an input voltage value is acquired.
The working frequency refers to the actual frequency of the compressor in the parking air conditioner during working operation, and the working current value refers to the actual current value of the compressor in the parking air conditioner during working operation under the condition of corresponding input voltage.
Specifically, after the parking air conditioner is started and continuously works for a certain time, the input voltage value, the working frequency and the working current value of the compressor in the parking air conditioner at the current moment can be detected.
Further, in one embodiment, acquiring an input voltage value, an operating frequency and an operating current value of a compressor in the parking air conditioner includes: responding to a refrigeration mode starting instruction, and controlling to start an outer fan in the parking air conditioner; after the outer fan continuously works for a second time, controlling to start a compressor of the parking air conditioner; and after the compressor continuously works for a third time, acquiring an input voltage value, a working frequency and a working current value of the compressor in the parking air conditioner.
The second duration and the third duration can be set according to actual conditions. Specifically, when a refrigerating mode starting instruction is received, the parking air conditioner is started in a refrigerating mode, the outer fan is controlled to be started preferentially, the compressor is started after the outer fan works continuously for a second time period, and the input voltage value, the working frequency and the working current value of the compressor in the parking air conditioner are obtained after the compressor works continuously for a third time period, so that subsequent fluorine lack detection is carried out according to the input voltage value, the working frequency and the working current value of the compressor. The parking air conditioner has the advantages that the outer fan is controlled to be started in preference to the compressor, the heat of the inner pipeline of the parking air conditioner is taken away quickly, the temperature of the inner pipeline of the parking air conditioner is reduced, the whole parking air conditioner can achieve quick refrigeration, the energy consumption is reduced, meanwhile, the accuracy of fluorine deficiency detection is improved, after the outdoor fan and the compressor work continuously for a certain time, the refrigerant circulating operation work in the parking air conditioner tends to be stable, and the accuracy of fluorine deficiency detection can be improved by performing fluorine deficiency detection at the moment.
And S220, determining a protection current threshold of the compressor according to the input voltage value.
When the compressor runs in a fluorine-deficient state, the load of the compressor is reduced, the working current of the compressor is reduced, and whether the compressor is in the fluorine-deficient running state or not can be judged through the working current of the compressor in the parking air conditioner, however, considering that the parking air conditioner usually adopts direct current power supplies with different rated voltages such as 12 volts, 24 volts, 36 volts, 48 volts and the like for power supply, the input voltage values actually input to the parking air conditioner are greatly different, and along with the difference of charging and discharging degrees of the direct current power supplies in the power supply process, the input voltage values actually input to the parking air conditioner have larger fluctuation on the basis of the rated voltage of the direct current power supplies, and the difference of the input voltage values can also influence the magnitude of the working current of the compressor, and if the unified protection current threshold is used for fluorine-deficient detection, the accuracy of fluorine-deficient detection can be poor. Therefore, after the input voltage value is obtained, different protection current thresholds can be selected according to the input voltage value, so that the accuracy of fluorine-lacking detection is improved, and the error detection of fluorine-lacking is reduced.
The total power of the parking air conditioner is always constant in the actual operation process, when the power supply voltage, namely the input voltage value, is increased, the working current of the compressor is reduced, on the contrary, when the input voltage value is reduced, the working current of the compressor is increased, therefore, the protection current threshold value is inversely proportional to the input voltage value, when the input voltage value is higher, the protection current threshold value can be set to be a lower current value, and when the input voltage value is higher, the protection current threshold value can be set to be a higher current value. For example, when the input voltage value is 22 volts, the protection current threshold value can be set to 15 amps; for another example, when the input voltage value is 27 volts, the protection current threshold may be set to 10 amps.
Specifically, the protection current threshold of the compressor is determined according to the input voltage value, which may be a preset lookup table or an association relationship between different input voltage values and the protection current threshold; after the input voltage value of the parking air conditioner at the current moment is obtained, the corresponding protection current threshold value is searched from the lookup table according to the input voltage value, or the protection current threshold value corresponding to the actual input voltage value is obtained according to the association relationship between the input voltage value and the protection current threshold value which is constructed in advance.
Further, in an embodiment, determining the protection current threshold of the compressor according to the input voltage value may further include: comparing the input voltage value with a preset high voltage threshold value and a preset low voltage threshold value; if the input voltage value is larger than the preset high voltage threshold value, determining the protection current threshold value as a first current value; if the input voltage value is smaller than or equal to the high voltage threshold value and larger than or equal to the low voltage threshold value, determining the protection current threshold value as a second current value; and if the input voltage value is smaller than the low voltage threshold value, determining the protection current threshold value as a third current value.
The protection method comprises the steps that a corresponding high-voltage threshold value and a corresponding low-voltage threshold value can be set in advance according to the rated voltage of a power supply direct-current power supply, and then after an input voltage value is obtained, the protection current threshold value of the compressor is determined according to the magnitude relation between the input voltage value and the high-voltage threshold value and the low-voltage threshold value; specifically, the protection current threshold may be set to a first current value when the input voltage value is greater than a preset high voltage threshold, set to a second current value when the input voltage value is less than or equal to the high voltage threshold and greater than or equal to a low voltage threshold, and set to a third current value when the input voltage value is less than the low voltage threshold. And the values of the first current value, the second current value and the third current value are increased in sequence.
For example, the high voltage threshold may be set to 27 volts, the low voltage threshold may be set to 22 volts, and when the input voltage value is greater than 27 volts, the protection current threshold may be set to 10 amps; when the input voltage value is less than or equal to 27 volts and greater than or equal to 22 volts, the protection current threshold value can be set to 12 amperes; when the value of the input voltage is less than 22 volts, the protection current threshold can be set to 15 amps.
S230, collecting the internal environment temperature value and the internal coil temperature value, and calculating the temperature difference between the internal environment temperature value and the internal coil temperature value.
Specifically, an internal environment temperature sensor and an internal coil temperature sensor may be disposed in an indoor unit of the parking air conditioner, so as to detect an indoor environment temperature value at a current moment in real time through the internal environment temperature sensor, acquire an internal coil temperature value at the current moment in real time through the internal coil temperature sensor, and calculate a temperature difference between the internal environment temperature value and the internal coil temperature value.
It can be understood that the temperature difference between the internal environment temperature value and the internal coil temperature value can reflect whether the parking air conditioner works normally, the internal coil temperature value is the lowest temperature at which the parking air conditioner can refrigerate in the refrigeration mode, and if the difference between the internal environment temperature value and the internal coil temperature value is large, the parking air conditioner can work normally without the condition of lacking fluorine; the accuracy of fluorine deficiency detection can be effectively improved by taking the temperature difference between the internal environment temperature value and the internal coil temperature value as a judgment condition of the fluorine deficiency detection.
S240, if the working frequency of the compressor is larger than a preset frequency threshold value, the working current value is smaller than a protection current threshold value and the temperature difference value is smaller than a preset temperature difference threshold value, it is determined that the parking air conditioner is in a fluorine-deficient state.
The preset frequency threshold value can be set as the reference operating frequency of the parking air conditioner in a non-fluorine-lacking state, and the working frequency is compared with the preset frequency threshold value to ensure that the compressor is in a normal working state in the fluorine-lacking detection process; the preset temperature difference threshold value can be set to be the minimum value of the temperature difference between the temperature of the parking air conditioner in the non-fluorine-lacking state and the indoor environment in the refrigeration mode, and fluorine-lacking detection is achieved in the dimension of temperature by comparing the temperature difference value with the preset temperature difference threshold value. Specifically, in one embodiment, the preset frequency threshold may be set to 35 hertz and the preset temperature difference threshold may be set to 3 degrees celsius.
After the working frequency of the compressor, the working current value of the compressor, and the temperature difference value between the internal environment temperature value and the internal coil temperature value are obtained, the fluorine deficiency detection can be carried out based on the working frequency of the compressor, the working current of the compressor, and the temperature difference value between the internal environment temperature value and the internal coil temperature value. Specifically, a frequency threshold and a temperature difference threshold may be preset, and when the operating frequency of the compressor is greater than the preset frequency threshold, the operating current value is less than the protection current threshold, and the temperature difference value is less than the preset temperature difference threshold, it is determined that the parking air conditioner is in the fluorine-deficient state.
In one embodiment, after the parking air conditioner is determined to be in the fluorine lack state, a compressor in the parking air conditioner and an external fan are controlled to be shut down. Specifically, when the parking air conditioner is in the fluorine lack state, the compressor and the outer fan in the parking air conditioner are shut down, and the compressor is prevented from being damaged due to continuous operation of the compressor in the fluorine lack state.
Further, the viscosity of the refrigerant becomes high when the temperature is high, so that the misjudgment of the fluorine-lacking state is caused; therefore, in one embodiment, after the refrigerant in the compressor of the parking air conditioner is stopped by controlling the compressor of the parking air conditioner and the external fan, the method includes: updating the shutdown times of the compressor; and if the shutdown frequency does not reach the preset shutdown frequency threshold value, controlling to start the compressor and the outer fan after the first time length.
The off times of the compressor are used for reflecting the times of judging the parking air conditioner to be in a fluorine-deficient state; the statistics of the shutdown times of the compressor can be counted in an accumulation mode or in a subtraction mode, and the selected preset abnormal times are larger than the initial value of the abnormal times. Correspondingly, different counting modes are adopted, and the values of the preset shutdown time threshold values are different, for example, when the statistics of the shutdown times of the compressor are counted in an accumulation mode, the initial value of the shutdown times of the compressor can be set to be zero, the preset shutdown time threshold value can be selected as the maximum sustainable times of the parking air conditioner under the refrigeration working condition, for example, the preset shutdown time threshold value can be set to be 3, namely the shutdown times of the compressor are accumulated to be 3, and the parking air conditioner can be confirmed to be in a fluorine-deficient state; when the statistics of the shutdown times of the compressor is counted in a cumulative reduction mode, the initial value of the shutdown times of the compressor can be set as the maximum times which can be borne by the parking air conditioner under the refrigeration working condition, the preset shutdown time threshold value can be set to be zero, namely the shutdown times of the compressor are reduced to 0, and the parking air conditioner can be confirmed to be in a fluorine-lacking state.
In one embodiment, the updating the shutdown times of the compressor may specifically include: adding the shutdown times of the compressor to a preset value to obtain a sum value; and updating the value of the number of times of shutdown of the compressor to a sum value. The method comprises the following steps that the value of the shutdown times of a compressor is added or subtracted, so that the shutdown times reach a preset threshold; specifically, when the shutdown time is updated in an accumulation manner, the preset value may be selected to be 1, and when the shutdown time is updated in an accumulation manner, the preset value may be selected to be minus 1, which is not limited herein.
Specifically, after the shutdown times of the compressor are updated, the shutdown times are compared with a preset shutdown time threshold, if the shutdown times are smaller than the preset shutdown time threshold, it is determined that the parking air conditioner is in a fluorine-deficient state and the possibility of misjudgment exists, and the compressor and the outer fan are restarted after a first time.
Further, if the shutdown frequency is equal to or greater than the preset shutdown frequency threshold, namely the shutdown frequency is equal to or greater than the preset shutdown frequency threshold, it is determined that the parking air conditioner is in a fluorine-deficient state, the compressor and the outer fan are shut down, and a fluorine-deficient warning message is sent out.
In the method for detecting the lack of fluorine of the parking air conditioner, an input voltage value, a working frequency and a working current value of a compressor in the parking air conditioner are obtained; determining a protection current threshold of the compressor according to the input voltage value; collecting an internal environment temperature value and an internal coil temperature value, and calculating a temperature difference value between the internal environment temperature value and the internal coil temperature value; and if the working frequency of the compressor is greater than the preset frequency threshold, the working current value is less than the protection current threshold and the temperature difference value is less than the preset temperature difference threshold, determining that the parking air conditioner is in a fluorine-deficient state. When the total power is unchanged in the actual operation process of the parking air conditioner, when the power supply voltage, namely the input voltage value is increased, the working current of the compressor is reduced, and conversely, when the power supply voltage, namely the input voltage value is reduced, the working current of the compressor is increased. Therefore, by obtaining the input voltage value of the compressor and combining the input voltage value with the determined protection current threshold value, fluorine deficiency detection is carried out according to the size relation among the working frequency, the working current value, the internal environment temperature value, the temperature difference value between the internal coil temperature values, the preset frequency threshold value, the protection current threshold value and the preset temperature difference threshold value, and the accuracy of fluorine deficiency detection can be improved.
Further, in one embodiment, after calculating the temperature difference between the internal ambient temperature value and the internal coil temperature value, the method further comprises: if the working frequency of the compressor is less than or equal to a preset frequency threshold, the working current value is greater than or equal to a protection current threshold or the temperature difference value is less than or equal to a preset temperature difference threshold, the working duration of the compressor is obtained; and if the working duration is longer than the preset duration threshold, resetting the shutdown times of the compressor.
Specifically, if the working frequency of the compressor is less than or equal to a preset frequency threshold, the working current value is greater than or equal to a protection current threshold or the temperature difference value is less than or equal to a preset temperature difference threshold, determining that the parking air conditioner is in a non-fluorine-deficient state, normally working, acquiring the working duration of the parking air conditioner after the compressor is turned off and restarted last time, determining that the compressor is in the non-fluorine-deficient state when the working duration is greater than the preset duration threshold, and resetting the turn-off times of the compressor at the moment, so that misjudgment of fluorine deficiency detection is reduced, and the accuracy of fluorine deficiency detection is improved.
The method for detecting fluorine deficiency of the parking air conditioner is further described in detail below with reference to specific application scenarios. Referring to fig. 3, the transport truck is equipped with a battery that supplies power to the parking air conditioner through a power cord. The parking air conditioner is at least provided with an air conditioner controller, a voltage detection module, a compressor working parameter detection module, a temperature detection module, an air conditioner driving module, a fluorine lack alarm module and a network connection module; specifically, the air conditioner controller is used for being connected with the voltage detection module, the temperature detection module, the air conditioner driving module, the fluorine lack alarm module and the network connection module.
The functions of each module are as follows:
the voltage detection module is used for detecting an input voltage value;
the compressor working parameter detection module is used for detecting a working circuit, working frequency and the like of the compressor;
the air conditioner driving module is used for receiving control parameters sent by the air conditioner controller so as to control the operation of actuators such as a compressor, an inner fan, an outer fan and the like, and control the parking air conditioner to operate in a refrigerating mode or a heating mode;
the temperature detection module is connected with the plurality of temperature sensors and is used for receiving temperature parameters such as the internal environment temperature and the internal coil temperature detected by each temperature sensor and sending the temperature parameters to the air conditioner controller; wherein, the temperature sensor at least comprises an inner environment temperature sensor, an inner coil temperature sensor and an outer environment sensor;
the fluorine-lacking alarm module comprises a display module and/or a voice module, the display module can be used for displaying fault information such as fluorine deficiency, and the voice module can be used for broadcasting the fault information such as fluorine deficiency;
the network connection module at least comprises a Wifi module; the network connection module can be used for transmitting fault information to an air conditioner after-sale service platform, timely reminding after-sale personnel to receive orders and carrying out maintenance work for users.
Specifically, as shown in fig. 4, when the user turns on the parking air conditioner in the cooling mode, the parking air conditioner may be operated according to the following steps:
and S410, responding to a refrigeration mode starting instruction, and controlling to start an external fan in the parking air conditioner.
And S420, after the outer fan continuously works for a second time, controlling to start the compressor of the parking air conditioner.
And after the outer fan runs for the second time period, starting a compressor of the parking air conditioner.
And S430, after the compressor continuously works for a third time, acquiring an input voltage value, a working current value and a working frequency of the compressor, and acquiring an internal environment temperature value and an internal coil temperature value.
After the compressor runs for the third time, the air conditioner controller obtains the currently input voltage value U through the voltage detection module and obtains the internal environment temperature value T through the temperature detection moduleInner ringAnd temperature value T of inner coil pipe of inner side heat exchangerInner pipeObtaining the working frequency F of the compressor and the working current value I of the compressor through the working parameter detection module of the compressorCompressor。
S440, judging whether the input voltage value, the working current value, the working frequency, the internal environment temperature value and the internal coil temperature value meet the fluorine deficiency judgment condition; if yes, go to S450; if not, go to step S490.
The air conditioner controller obtains an input voltage value U and an internal environment temperature value TInner ringTemperature value T of inner coil pipeInner pipeOperating frequency F and operating current value ICompressorThereafter, fluorine deficiency detection is performed based on these parameters.
Specifically, the fluorine deficiency judgment conditions are as follows:
1) The working frequency F of the compressor is more than or equal to FPreset of(ii) a Wherein, FPreset ofCan be set to 35 Hz;
2) Operating current I of compressorCompressorLess than or equal to protective current threshold IPreset；
The 24V supply voltage is exemplified as follows: when the input voltage value U is less than or equal to the preset low voltage threshold (for example, the preset low voltage threshold can be set to 22V), the protection current threshold IPresetCan be set to 15A; when the input voltage value U is larger than or equal to the preset high voltage threshold (for example, the preset high voltage threshold can be set to 27V), the protection current threshold IPreset ofCan be set to 10A;
3)Tinner ring-TInner pipe≤△TPreset temperature(ii) a Wherein, delta TPreset temperatureMay be set at 3 deg.c.
And S450, entering a fluorine-lacking protection state, and controlling a compressor and an outer fan in the parking air conditioner to be turned off.
When the fluorine-deficient judging condition is met, the air conditioner controller controls the parking air conditioner to enter a fluorine-deficient protection state, and under the fluorine-deficient protection state, an air conditioner driving module in the parking air conditioner controls the compressor and the external fan to stop working.
And S460, updating the shutdown times of the compressor.
Wherein, the number of times of the shutdown of the compressor is accumulated to enter the fluorine-lacking protection state.
S470, judging whether the shutdown times of the compressor are less than a preset shutdown time threshold value; if yes, entering S480; if not, the process proceeds to S490.
Wherein, the preset shutdown time threshold value can be set to be a constant more than 3; specifically, in the fluorine-deficient protection state, it is simultaneously determined whether the shutdown frequency of the compressor is less than a preset shutdown frequency threshold, that is, it is determined whether the cumulative number of times of entering the fluorine-deficient protection state is less than a preset frequency.
And S480, controlling to start the compressor and the outer fan after the first time.
If the condition that the shutdown times of the compressor are smaller than a preset shutdown time threshold value is met, restarting the compressor and the outer fan after the compressor and the outer fan stop working for a first time length; wherein the first time period may be set to 3 minutes.
Further, after restarting the compressor and the external fan, the process skips to execute S430 to continue the fluorine deficiency detection.
And S490, keeping the fluorine-lacking protection state, sending fault information, and resetting the shutdown times of the compressor.
If the condition that the accumulated times of entering the fluorine-deficient protection state is less than the preset shut-down time threshold value is not met, the condition that the fluorine deficiency is met for many times is indicated, and the parking air conditioner can be determined to be in the fluorine-deficient state. At this time, the air conditioner controller may send fault information to the fluorine-deficient alarm module, specifically, may control an indicator light of the display module to blink or display text information, and/or control the voice module to send out a warning sound or voice information, and the like; the air conditioner controller can also transmit the fluorine-lacking information to an air conditioner after-sale platform through the network connection module, so as to remind after-sale personnel to check and provide maintenance service for users in time.
In addition, the air conditioner controller continuously acquires the working duration of the compressor, and if the working duration is greater than a preset duration threshold, the shutdown times of the compressor are cleared. Wherein the preset time threshold may be set to 20 minutes.
In order to better implement the method for detecting fluorine deficiency of the parking air conditioner provided in the embodiment of the present application, on the basis of the method for detecting fluorine deficiency of the parking air conditioner provided in the embodiment of the present application, an apparatus for detecting fluorine deficiency of the parking air conditioner is further provided in the embodiment of the present application, as shown in fig. 5, the apparatus 500 for detecting fluorine deficiency of the parking air conditioner includes:
a working parameter obtaining module 510, configured to obtain an input voltage value, a working frequency, and a working current value of a compressor in the parking air conditioner;
a protection current threshold determination module 520, configured to determine a protection current threshold of the compressor according to the input voltage value;
a temperature value collecting module 530, configured to collect an internal environment temperature value and an internal coil temperature value, and calculate a temperature difference between the internal environment temperature value and the internal coil temperature value;
and a fluorine deficiency detection module 540, configured to determine that the parking air conditioner is in a fluorine deficiency state when the operating frequency of the compressor is greater than the preset frequency threshold, the operating current value is less than the protection current threshold, and the temperature difference value is less than the preset temperature difference threshold.
In some embodiments of the present application, the protection current threshold determining module 520 is configured to compare the input voltage value with a preset high voltage threshold and a preset low voltage threshold; when the input voltage value is larger than the preset high voltage threshold value, determining the protection current threshold value as a first current value; determining the protection current threshold value as a second current value when the input voltage value is less than or equal to the high voltage threshold value and greater than or equal to the low voltage threshold value; determining the protection current threshold as a third current value when the input voltage value is less than the low voltage threshold.
In some embodiments of the present application, the fluorine deficiency detection module 540 is used to control the compressor and the external fan of the parking air conditioner to shut down.
In some embodiments of the present application, the fluorine deficiency detection module 540 is configured to update the number of times the compressor is shut down; and when the shutdown frequency does not reach a preset shutdown frequency threshold value, controlling to start the compressor and the outer fan after a first time length.
In some embodiments of the present application, the fluorine deficiency detecting module 540 is configured to obtain an operating duration of the compressor when an operating frequency of the compressor is less than or equal to a preset frequency threshold, an operating current value is greater than or equal to the protection current threshold, or a temperature difference value is less than or equal to a preset temperature difference threshold; and when the working duration is greater than a preset duration threshold, clearing the shutdown times of the compressor.
In some embodiments of the present application, the fluorine deficiency detecting module 540 is configured to add the shutdown number of the compressor to a preset value to obtain a sum; and updating the value of the number of times of shutdown of the compressor to a sum value.
In some embodiments of the present application, the working parameter obtaining module 510 is configured to respond to a cooling mode starting instruction to control to start an external fan of a parking air conditioner; after the outer fan continuously works for a second time, controlling to start a compressor of the parking air conditioner; and after the compressor continuously works for a third time, acquiring an input voltage value, a working frequency and a working current value of the compressor in the parking air conditioner.
For specific limitations of the fluorine deficiency detection device of the parking air conditioner, reference may be made to the above limitations of the fluorine deficiency detection method of the parking air conditioner, and details thereof are not repeated herein. All or part of each module in the fluorine lack detection device of the parking air conditioner can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In some embodiments of the present application, the fluorine deficiency detecting device 500 of the parking air conditioner may be implemented in a form of a computer program, and the computer program may be executed on a computer apparatus as shown in fig. 5. The memory of the computer device may store various program modules constituting the fluorine deficiency detection apparatus 500 of the parking air conditioner, for example, an operating parameter acquiring module 510, a protection current threshold determining module 520, a temperature value collecting module 530, and a fluorine deficiency detecting module 540 shown in fig. 5. The program modules constitute a computer program that causes a processor to execute the steps in the method for detecting fluorine deficiency in a parking air conditioner according to the embodiments of the present application described in the present specification.
For example, the computer device shown in fig. 6 may execute step S210 through the operating parameter acquiring module 510 in the fluorine deficiency detecting device 500 of the parking air conditioner shown in fig. 5. The computer device may perform step S220 by the protection current threshold determination module 520. The computer device may perform step S230 through the temperature value collection module 530. The computer device may execute step S240 through the fluorine deficiency detecting module 540. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external computer device through a network connection. The computer program is executed by a processor to implement a fluorine deficiency detection method of a parking air conditioner.
Those skilled in the art will appreciate that the architecture shown in fig. 5 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In some embodiments of the present application, there is provided a parking air conditioner comprising one or more processors; a memory; and one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to perform the steps of the fluorine deficiency detection method of the parking air conditioner. The steps of the method for detecting lack of fluorine in the parking air conditioner herein may be the steps of the method for detecting lack of fluorine in the parking air conditioner of the above-described respective embodiments.
In some embodiments of the present application, a computer-readable storage medium is provided, which stores a computer program, where the computer program is loaded by a processor, so that the processor executes the steps of the method for detecting fluorine deficiency of a parking air conditioner. The steps of the method for detecting lack of fluorine in the parking air conditioner herein may be the steps of the method for detecting lack of fluorine in the parking air conditioner of the above-described respective embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the computer program is executed. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM may take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), for example.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above detailed description is provided for the fluorine-deficient detection method and apparatus of the parking air conditioner, the parking air conditioner and the storage medium provided in the embodiments of the present application, and the specific examples are applied herein to explain the principle and the implementation of the present invention, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A fluorine deficiency detection method of a parking air conditioner is characterized by comprising the following steps:
acquiring an input voltage value, a working frequency and a working current value of a compressor in the parking air conditioner;
determining a protection current threshold of the compressor according to the input voltage value;
acquiring an internal environment temperature value and an internal coil temperature value, and calculating a temperature difference value between the internal environment temperature value and the internal coil temperature value;
and if the working frequency of the compressor is greater than a preset frequency threshold value, the working current value is less than the protection current threshold value and the temperature difference value is less than a preset temperature difference threshold value, determining that the parking air conditioner is in a fluorine-lacking state.
2. The method of claim 1, wherein said determining a protection current threshold for said compressor based on said input voltage value comprises:
comparing the input voltage value with a preset high voltage threshold value and a preset low voltage threshold value;
if the input voltage value is larger than the preset high voltage threshold value, determining the protection current threshold value as a first current value;
if the input voltage value is smaller than or equal to the high voltage threshold value and larger than or equal to the low voltage threshold value, determining the protection current threshold value as a second current value;
and if the input voltage value is smaller than the low voltage threshold value, determining the protection current threshold value as a third current value.
3. The method of claim 1, wherein the step of determining that the parking air conditioner is in a fluorine-deficient state is followed by the step of:
and controlling a compressor and an outer fan in the parking air conditioner to be turned off.
4. The method of claim 3, wherein after the controlling the compressor in the parking air conditioner and the external fan to stop, comprises:
updating the number of times of shutdown of the compressor;
and if the shutdown times do not reach a preset shutdown time threshold value, controlling to start the compressor and the outer fan after a first time length.
5. The method of claim 4, wherein said updating the number of shutdowns of the compressor comprises:
adding the shutdown times of the compressor to a preset value to obtain a sum; and
updating the value of the number of times of shutdown of the compressor to the sum value.
6. The method of claim 1, wherein after calculating the temperature difference between the internal ambient temperature value and the internal coil temperature value, further comprising:
if the working frequency of the compressor is smaller than or equal to a preset frequency threshold value, the working current value is larger than or equal to the protection current threshold value or the temperature difference value is smaller than or equal to a preset temperature difference threshold value, the working duration of the compressor is obtained;
and if the working duration is greater than a preset duration threshold, resetting the shutdown times of the compressor.
7. The method of claim 1, wherein the obtaining of the input voltage value, the operating frequency and the operating current value of the compressor in the parking air conditioner comprises:
responding to a refrigeration mode starting instruction, and controlling to start an outer fan in the parking air conditioner;
after the outer fan continuously works for a second time, controlling to start a compressor of the parking air conditioner;
and after the compressor continuously works for a third time, acquiring an input voltage value, a working frequency and a working current value of the compressor in the parking air conditioner.
8. A lack of fluorine detection device of parking air conditioner, characterized in that, the device includes:
the working parameter acquisition module is used for acquiring an input voltage value, a working frequency and a working current value of a compressor in the parking air conditioner;
the protection current threshold value determining module is used for determining a protection current threshold value of the compressor according to the input voltage value;
the temperature value acquisition module is used for acquiring an internal environment temperature value and an internal coil temperature value and calculating a temperature difference value between the internal environment temperature value and the internal coil temperature value;
and the fluorine lack detection module is used for determining that the parking air conditioner is in a fluorine lack state when the working frequency of the compressor is greater than a preset frequency threshold value, the working current value is less than the protection current threshold value and the temperature difference value is less than a preset temperature difference threshold value.
9. A parking air conditioner, comprising:
one or more processors;
a memory; and
one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the fluorine deficiency detection method of the parking air conditioner of any one of claims 1 to 7.
10. A computer-readable storage medium, having a computer program stored thereon, which is loaded by a processor to perform the steps of the method for detecting lack of fluorine in a parking air conditioner of any one of claims 1 to 7.
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| CN202210811082.2A CN115257281A (en) | 2022-07-11 | 2022-07-11 | Parking air conditioner, fluorine deficiency detection method and device thereof and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117341432A (en) * | 2023-12-05 | 2024-01-05 | 珠海格力电器股份有限公司 | Control method and device of parking air conditioner, parking air conditioner and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117341432A (en) * | 2023-12-05 | 2024-01-05 | 珠海格力电器股份有限公司 | Control method and device of parking air conditioner, parking air conditioner and storage medium |
| CN117341432B (en) * | 2023-12-05 | 2024-03-08 | 珠海格力电器股份有限公司 | Control method and device of parking air conditioner, parking air conditioner and storage medium |
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