Method and device for cleaning outdoor unit of stationary air conditioner, stationary air conditioner and storage medium

Abstract

The application discloses a kind of external machine cleaning method, device, parking air conditioner and storage medium of parking air conditioner, the method includes: based on the cumulative start-up time of parking air conditioner, the dust amount of filter screen of vehicle outside heat exchanger, the inner tube temperature of parking air conditioner and the operating parameter of vehicle outside fan, the dirty block condition of filter screen of vehicle outside heat exchanger is reminded to determine that the filter screen of vehicle outside heat exchanger needs to be cleaned;The dust amount of filter screen of vehicle outside heat exchanger and the inner tube temperature of parking air conditioner are combined, and the dirty block condition of filter screen of vehicle outside heat exchanger is reminded to be removed;According to the operating condition of internal machine, control parking air conditioner enters preset self-cleaning mode, to realize the self-cleaning of filter screen of vehicle outside heat exchanger.The scheme, by combining infrared sensor to detect the filter screen of the condenser of the external machine of parking air conditioner, control the condenser of the external machine of parking air conditioner to carry out self-cleaning, reduce cleaning difficulty, and guarantee cleaning effect.

Description

Technical Field

[0001] This invention belongs to the field of parking air conditioning technology, specifically relating to a method, device, parking air conditioner and storage medium for cleaning the outdoor unit of a parking air conditioner, and particularly to a method, device, parking air conditioner and storage medium for implementing the self-cleaning control logic of a parking air conditioner outdoor unit based on an infrared sensor. Background Technology

[0002] As an important segment of the air conditioning industry, parking air conditioners are used in harsher environments than household air conditioners due to long-distance transportation across multiple regions. This results in a much faster accumulation of dust and dirt on the outdoor units of parking air conditioners compared to household air conditioners. Consequently, the cleaning of the outdoor unit condenser of parking air conditioners has become an urgent problem to be solved in the industry.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The purpose of this invention is to provide a method, apparatus, air conditioner, and storage medium for cleaning the outdoor unit of a parking air conditioner, in order to solve the problem that the harsh operating environment of parking air conditioners leads to rapid dust accumulation on the outdoor unit, making it difficult to clean the outdoor unit condenser. This invention achieves the goal of controlling the outdoor unit condenser to self-clean by combining an infrared sensor to detect the dust accumulation on the filter screen, thereby reducing the difficulty of cleaning the outdoor unit condenser and ensuring effective cleaning.

[0005] This invention provides a method for cleaning the outdoor unit of a parking air conditioner. The parking air conditioner includes an indoor unit and an outdoor unit. The indoor unit has an in-vehicle heat exchanger; the outdoor unit has an external heat exchanger and an external fan. A filter screen is installed in a localized area of ​​the external heat exchanger as a reference for determining the dust accumulation on the external heat exchanger. An infrared detection device is installed between the chassis of the vehicle where the parking air conditioner is located and the filter screen of the external heat exchanger. The infrared detection device can detect the dust accumulation on the filter screen of the external heat exchanger by emitting infrared light to the filter screen and receiving the reflected light. The cleaning method for the outdoor unit of the parking air conditioner includes: acquiring the dust accumulation on the filter screen of the external heat exchanger detected by the infrared detection device and recording it as the dust amount of the filter screen; acquiring the pipe temperature of the in-vehicle heat exchanger and recording it as the internal pipe temperature of the parking air conditioner; and cleaning the parking air conditioner after it is turned on. The system accumulates the operating time of the parking air conditioner to obtain its cumulative operating time; and, when the parking air conditioner is running after being turned on, it acquires the operating parameters of the outdoor fan; based on the cumulative operating time of the parking air conditioner, combined with the amount of dust on the filter of the outdoor heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the outdoor fan, it alerts the user to the clogging status of the filter of the outdoor heat exchanger to determine if the filter needs to be cleaned; after alerting the user to the clogging status of the filter, it clears the alert based on the amount of dust on the filter and the internal pipe temperature of the parking air conditioner; if it is determined that the filter of the outdoor heat exchanger needs to be cleaned, it controls the parking air conditioner to enter a preset self-cleaning mode according to the operating status of the indoor unit to achieve self-cleaning of the filter of the outdoor heat exchanger.

[0006] In some embodiments, the infrared detection device is specifically installed on the chassis of the vehicle where the parking air conditioner is located, in an area where the flatness of the fins of the external heat exchanger reaches a set flatness range, and inside the filter screen of the external heat exchanger; after the infrared light emitting end of the infrared detection device emits infrared light, the angle range at which the infrared light reaches the filter screen of the external heat exchanger is within a set angle range; and the distance between the infrared light emitting end of the infrared detection device and the filter screen of the external heat exchanger is within a set distance range.

[0007] In some embodiments, the amount of dust initially acquired in the filter of the external heat exchanger is recorded as the initial dust amount of the filter of the external heat exchanger; and the amount of dust currently acquired in the filter of the external heat exchanger is recorded as the current dust amount of the filter of the external heat exchanger; the operating parameters of the external fan initially acquired are recorded as the initial operating parameters of the external fan; and the operating parameters of the external fan currently acquired during its operation are recorded as the current operating parameters of the external fan; based on the cumulative operating time of the parking air conditioner, combined with the amount of dust in the filter of the external heat exchanger, the internal pipe temperature of the parking air conditioner, and the external fan... The system uses operating parameters to alert users to the clogging status of the external heat exchanger's filter, determining if cleaning is necessary. This includes: if the cumulative operating time of the parking air conditioner is less than or equal to a set operating time, determining whether the absolute value of the difference between the current dust level and the initial dust level of the external heat exchanger's filter is greater than or equal to a first set dust level, and whether the difference between the current operating parameters and the initial operating parameters of the external fan is greater than a set operating parameter. If these conditions are met, an alert message regarding the clogging status of the external heat exchanger's filter is issued. If the cumulative operating time of the parking air conditioner is greater than the set operating time but less than or equal to three times the set operating time, then determine whether the absolute value of the difference between the current dust amount of the filter screen of the vehicle's external heat exchanger and the initial dust amount of the filter screen is greater than or equal to a first set dust amount, and whether the difference between the current operating parameters of the vehicle's external fan and the initial operating parameters of the vehicle's external fan is greater than the set operating parameters: if these conditions are met, then a reminder message regarding the clogging of the filter screen of the vehicle's external heat exchanger is issued to alert the user to the clogging of the filter screen; if the cumulative operating time of the parking air conditioner is greater than three times the set operating time but less than or equal to five times the set operating time... If the system operates for a certain period of time, it determines whether the absolute value of the difference between the current dust level and the initial dust level of the external heat exchanger filter is greater than or equal to a first set dust level, or whether the difference between the current operating parameters and the initial operating parameters of the external fan is greater than a set operating parameter. If these conditions are met, a reminder message regarding the clogging of the external heat exchanger filter is issued. If the cumulative operating time of the parking air conditioner is greater than five times the set operating time, a reminder message regarding the clogging of the external heat exchanger filter is issued.

[0008] In some implementations, based on the cumulative operating time of the parking air conditioner, combined with the dust level of the filter of the external heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the external fan, a reminder is given regarding the clogging status of the filter of the external heat exchanger to determine if cleaning of the filter is necessary. This further includes: if the cumulative operating time of the parking air conditioner equals a set operating time, and the absolute value of the difference between the current dust level and the initial dust level of the filter of the external heat exchanger is less than a first set dust level, then: if the absolute value of the difference between the current dust level and the initial dust level of the filter of the external heat exchanger is less than a second set dust level, the recorded current cumulative operating time of the parking air conditioner is reset to zero, and then the operating time of the parking air conditioner is re-accumulated to obtain a new cumulative operating time; the second set dust level is less than the first set dust level.

[0009] In some implementations, within a set time interval, the amount of dust on the filter of the vehicle's external heat exchanger is recorded once at a set detection interval, and denoted as the i-th dust amount of the filter, where i is a positive integer; wherein, within the i-th dust amount of the filter of the external heat exchanger, the current i-th dust amount of the filter of the external heat exchanger is denoted as the current dust amount of the filter of the external heat exchanger; after alerting the external heat exchanger to the clogging status of its filter, the dust amount of the filter and the internal pipe temperature of the parking air conditioner are combined to assess the external heat exchanger's... The alert for filter clogging is cleared, including: when the internal pipe temperature of the parking air conditioner is greater than or equal to the set pipe temperature, if the absolute value of the difference between the current dust amount and the previous dust amount of the filter of the external heat exchanger is greater than or equal to a third set dust amount for a consecutive set number of times, then it is determined that the external heat exchanger has been cleaned; and, if an alert for filter clogging has already been issued: the alert for filter clogging is cleared; the recorded cumulative operating time of the parking air conditioner is reset to zero, and then... The operating time of the parking air conditioner is recalculated to obtain a new cumulative operating time. The initial dust amount of the filter screen of the external heat exchanger is cleared, and the current dust amount of the filter screen of the external heat exchanger is recorded as the new initial dust amount of the filter screen of the external heat exchanger. The third set dust amount is less than the first set dust amount and greater than or equal to the second set dust amount. If the internal pipe temperature of the parking air conditioner is greater than or equal to the set pipe temperature, and the cumulative operating time of the parking air conditioner is greater than or equal to the set operating time but the external heat exchanger is not activated... When the filter of the air conditioner is clogged, it is determined whether the current dust amount detected within a continuous set time is greater than or equal to the difference between the initial dust amount and the second set dust amount of the filter of the external heat exchanger, and less than or equal to the sum of the initial dust amount and the second set dust amount of the filter of the external heat exchanger. If this condition is met, it is determined that the external heat exchanger has been cleaned, and the recorded cumulative operating time of the parking air conditioner is reset to zero. Then, the operating time of the parking air conditioner is re-accumulated to obtain a new cumulative operating time of the parking air conditioner.

[0010] In some implementations, when it is determined that the filter of the vehicle's external heat exchanger needs cleaning, the parking air conditioner is controlled to enter a preset self-cleaning mode based on the operating status of the indoor unit to achieve self-cleaning of the filter of the vehicle's external heat exchanger. This includes: determining whether the indoor unit is in an operating state or an inactive state; if it is determined that the indoor unit is in an operating state, then upon receiving a cleaning command initiated by the user, controlling the parking air conditioner to enter the preset self-cleaning mode to frost and remove dust from the external heat exchanger based on the current dust level of the filter, thereby achieving self-cleaning of the filter; if it is determined that the indoor unit is in an inactive state, then controlling the parking air conditioner to enter the preset self-cleaning mode to frost and remove dust from the external heat exchanger based on the current dust level of the filter, thereby achieving self-cleaning of the filter.

[0011] In conjunction with the above method, another aspect of the present invention provides a cleaning device for the outdoor unit of a parking air conditioner. The parking air conditioner includes an indoor unit and an outdoor unit; the indoor unit includes an in-vehicle heat exchanger; the outdoor unit includes an external heat exchanger and an external fan; a filter screen is provided in a localized area of ​​the external heat exchanger as a reference for determining the dust accumulation on the external heat exchanger; an infrared detection device is provided between the chassis of the vehicle where the parking air conditioner is located and the filter screen of the external heat exchanger; the infrared detection device is capable of detecting the dust accumulation on the filter screen of the external heat exchanger by emitting infrared light to the filter screen and receiving reflected light; the cleaning device for the outdoor unit of the parking air conditioner includes: an acquisition unit configured to acquire the dust accumulation on the filter screen of the external heat exchanger detected by the infrared detection device, and record it as the dust amount on the filter screen of the external heat exchanger; acquire the pipe temperature of the in-vehicle heat exchanger, and record it as the internal pipe temperature of the parking air conditioner; and, after the parking air conditioner is turned on, record the operating time of the parking air conditioner. The system accumulates the cumulative operating time of the parking air conditioner; and, when the parking air conditioner is running after being turned on, acquires the operating parameters of the outdoor fan. The control unit is configured to, based on the cumulative operating time of the parking air conditioner, combined with the amount of dust on the filter of the outdoor heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the outdoor fan, remind the user of the filter's clogging status to determine if the filter needs cleaning. The control unit is also configured to, after reminding the user of the clogging status, clear the reminder based on the amount of dust on the filter and the internal pipe temperature of the parking air conditioner. Furthermore, the control unit is configured to, when it is determined that the filter needs cleaning, control the parking air conditioner to enter a preset self-cleaning mode based on the operating status of the indoor unit to achieve self-cleaning of the filter of the outdoor heat exchanger.

[0012] In some embodiments, the infrared detection device is specifically installed on the chassis of the vehicle where the parking air conditioner is located, in an area where the flatness of the fins of the external heat exchanger reaches a set flatness range, and inside the filter screen of the external heat exchanger; after the infrared light emitting end of the infrared detection device emits infrared light, the angle range at which the infrared light reaches the filter screen of the external heat exchanger is within a set angle range; and the distance between the infrared light emitting end of the infrared detection device and the filter screen of the external heat exchanger is within a set distance range.

[0013] In some embodiments, the control unit is further configured to record the initially acquired dust amount of the filter screen of the vehicle exterior heat exchanger as the initial dust amount of the filter screen of the vehicle exterior heat exchanger; and to record the currently acquired dust amount of the filter screen of the vehicle exterior heat exchanger as the current dust amount of the filter screen of the vehicle exterior heat exchanger; the control unit is further configured to record the initially acquired operating parameters of the vehicle exterior fan as the initial operating parameters of the vehicle exterior fan; and to record the currently acquired operating parameters of the vehicle exterior fan during the operation of the vehicle exterior fan as the current operating parameters of the vehicle exterior fan; the control unit, based on the cumulative operating time of the parking air conditioner, combined with the dust amount of the filter screen of the vehicle exterior heat exchanger... The system uses dust levels, the internal pipe temperature of the parking air conditioner, and the operating parameters of the external fan to alert users to the clogging status of the filter in the external heat exchanger, thus determining whether the filter needs cleaning. This includes: if the cumulative operating time of the parking air conditioner is less than or equal to a set operating time, determining whether the absolute value of the difference between the current dust level and the initial dust level of the external heat exchanger filter is greater than or equal to a first set dust level, and whether the difference between the current operating parameters and the initial operating parameters of the external fan is greater than a set operating parameter. If these conditions are met, an alert message regarding the clogging status of the external heat exchanger filter is issued to alert users to the need for cleaning. The system alerts the user to potential clogging of the heat exchanger filter. If the cumulative operating time of the parking air conditioner is greater than the set operating time but less than or equal to three times the set operating time, it determines whether the absolute value of the difference between the current dust level and the initial dust level of the external heat exchanger filter is greater than or equal to a first set dust level, and whether the difference between the current operating parameters and the initial operating parameters of the external fan is greater than a set operating parameter. If these conditions are met, an alert message is issued regarding the clogging of the external heat exchanger filter. If the cumulative operating time of the parking air conditioner is greater than five times the set operating time, then it is determined whether the absolute value of the difference between the current dust amount of the filter screen of the vehicle's external heat exchanger and the initial dust amount of the filter screen is greater than or equal to the first set dust amount, or whether the difference between the current operating parameters of the vehicle's external fan and the initial operating parameters of the external fan is greater than the set operating parameters. If these conditions are met, a reminder message regarding the clogging of the filter screen of the vehicle's external heat exchanger is issued to alert the user. If the cumulative operating time of the parking air conditioner is greater than five times the set operating time, a reminder message regarding the clogging of the filter screen of the vehicle's external heat exchanger is issued to alert the user.

[0014] In some implementations, the control unit, based on the cumulative operating time of the parking air conditioner, combined with the dust level of the filter of the external heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the external fan, alerts the control unit to the clogging status of the filter of the external heat exchanger to determine whether the filter needs to be cleaned. This further includes: if the cumulative operating time of the parking air conditioner equals a set operating time, and the absolute value of the difference between the current dust level and the initial dust level of the filter of the external heat exchanger is less than a first set dust level, then: if the absolute value of the difference between the current dust level and the initial dust level of the filter of the external heat exchanger is less than a second set dust level, the recorded current cumulative operating time of the parking air conditioner is reset to zero, and then the operating time of the parking air conditioner is re-accumulated to obtain a new cumulative operating time; the second set dust level is less than the first set dust level.

[0015] In some embodiments, the control unit is further configured to record the amount of dust on the filter of the vehicle's external heat exchanger at a set detection interval within a set time interval, denoted as the i-th dust amount of the filter of the vehicle's external heat exchanger, where i is a positive integer; wherein, in the i-th dust amount of the filter of the vehicle's external heat exchanger, the current i-th dust amount of the filter of the vehicle's external heat exchanger is recorded as the current dust amount of the filter of the vehicle's external heat exchanger; after alerting the vehicle's external heat exchanger filter to its clogging status, the control unit combines the dust amount of the filter of the vehicle's external heat exchanger with the parking space... The system adjusts the internal pipe temperature and clears the alerts regarding the clogging of the external heat exchanger's filter. This includes: when the internal pipe temperature of the parking air conditioner is greater than or equal to a set pipe temperature, if the absolute value of the difference between the current dust amount and the previous dust amount of the external heat exchanger's filter is greater than or equal to a third set dust amount for a consecutive set number of times, then it is determined that the external heat exchanger has been cleaned; and, if an alert regarding the clogging of the external heat exchanger's filter has already been issued: clearing the alert regarding the clogging of the external heat exchanger's filter; and clearing the recorded cumulative operating time of the parking air conditioner. The operating time is reset to zero, and then the operating time of the parking air conditioner is accumulated again to obtain a new cumulative operating time. The initial dust amount of the filter screen of the vehicle's external heat exchanger is cleared, and then the current dust amount of the filter screen of the vehicle's external heat exchanger is recorded as the new initial dust amount of the filter screen of the vehicle's external heat exchanger. The third set dust amount is less than the first set dust amount and greater than or equal to the second set dust amount. If the internal pipe temperature of the parking air conditioner is greater than or equal to the set pipe temperature, and the cumulative operating time of the parking air conditioner is greater than or equal to the set operating time but no dust has been removed, the parking air conditioner will be automatically activated. When a reminder is issued regarding the clogging of the filter screen of the vehicle's external heat exchanger, it is determined whether the current dust amount detected within a continuously set time period is greater than or equal to the difference between the initial dust amount and the second set dust amount of the filter screen, and less than or equal to the sum of the initial dust amount and the second set dust amount of the filter screen. If this condition is met, it is determined that the external heat exchanger has been cleaned, and the recorded cumulative operating time of the parking air conditioner is reset to zero. Then, the operating time of the parking air conditioner is re-accumulated to obtain a new cumulative operating time of the parking air conditioner.

[0016] In some embodiments, when the control unit determines that the filter of the external heat exchanger needs to be cleaned, it controls the parking air conditioner to enter a preset self-cleaning mode based on the operating status of the indoor unit to achieve self-cleaning of the filter of the external heat exchanger. This includes: determining whether the indoor unit is in an operating state or an inactive state; if the indoor unit is in an operating state, then upon receiving a cleaning command initiated by the user, controlling the parking air conditioner to enter the preset self-cleaning mode to frost and remove dust from the external heat exchanger based on the current dust level of the filter, thereby achieving self-cleaning of the filter; if the indoor unit is in an inactive state, then controlling the parking air conditioner to enter the preset self-cleaning mode to frost and remove dust from the external heat exchanger based on the current dust level of the filter, thereby achieving self-cleaning of the filter.

[0017] In conjunction with the above-mentioned device, the present invention further provides a parking air conditioner, including: the outdoor unit cleaning device of the parking air conditioner described above.

[0018] In conjunction with the above method, the present invention further provides a storage medium comprising a stored program, wherein, when the program is executed, the device containing the storage medium is controlled to perform the above-described method for cleaning the outdoor unit of a parking air conditioner.

[0019] Therefore, the solution of this invention involves installing an infrared sensor at the outdoor unit condenser of the parking air conditioner. This sensor detects the dust accumulation on the filter of the outdoor unit condenser and determines whether to enter the self-cleaning mode based on the dust accumulation. When the dust accumulation on the filter reaches a certain level, the parking air conditioner is controlled to enter the self-cleaning mode, causing the outdoor unit condenser to frost and remove dust, thus achieving a self-cleaning function. When the outdoor unit condenser is in self-cleaning mode and frosting and dust removal is performed, the frost area of ​​the outdoor unit condenser is matched with the dust accumulation on the filter screen of the outdoor unit condenser, based on the dust accumulation detected by the infrared sensor. The frost is also sufficient and uniform, ensuring the effectiveness of frosting and dust removal. Thus, by combining the detection of dust accumulation on the filter screen of the outdoor unit condenser by the infrared sensor, the self-cleaning of the outdoor unit condenser is controlled, reducing the difficulty of cleaning the outdoor unit condenser while ensuring the cleaning effect.

[0020] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0021] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] Figure 1 This is a schematic flowchart of an embodiment of the method for cleaning the outdoor unit of a parking air conditioner according to the present invention;

[0023] Figure 2 This is a schematic flowchart of an embodiment of the method of the present invention for controlling the parking air conditioner to enter a preset self-cleaning mode;

[0024] Figure 3 This is a schematic diagram of a structure of an embodiment of the outdoor unit cleaning device for a parking air conditioner according to the present invention;

[0025] Figure 4 This is a schematic diagram of the detection structure of the infrared sensor in the parking air conditioner outdoor unit based on the infrared sensor of the present invention;

[0026] Figure 5 This is a schematic diagram of an embodiment of the parking air conditioner outdoor unit based on an infrared sensor according to the present invention, wherein (a) is a schematic diagram of the structure of the parking air conditioner outdoor unit, and (b) is a schematic diagram of the AA cross-sectional structure of the parking air conditioner outdoor unit;

[0027] Figure 6 A partial structural schematic diagram of an embodiment of the condenser and infrared sensor in the outdoor unit of a parking air conditioner based on an infrared sensor according to the present invention;

[0028] Figure 7 This is a flowchart illustrating an embodiment of the self-cleaning control logic for the outdoor unit condenser of a parking air conditioner based on an infrared sensor, according to the present invention.

[0029] Referring to the accompanying drawings, the reference numerals in the embodiments of the present invention are as follows:

[0030] 10-Chassis; 20-Infrared sensor; 30-Outdoor unit condenser; 40-Filter; 102-Acquisition unit; 104-Control unit. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0032] To address the issue of parking air conditioners operating in harsh environments, which leads to rapid dust accumulation on the outdoor unit and makes cleaning the outdoor unit condenser difficult, current solutions rely on user-controlled frosting and dust removal via remote control, resulting in limited intelligence. Furthermore, users rarely use this self-cleaning function, and many are unaware of its functionality. Therefore, a robust, automated control logic is needed to enable self-cleaning of the parking air conditioner's outdoor unit condenser.

[0033] Therefore, the present invention proposes a method for cleaning the outdoor unit of a parking air conditioner, specifically a method for implementing the self-cleaning control logic of the outdoor unit of a parking air conditioner based on an infrared sensor. By using an infrared sensor to detect the dust accumulation on the filter screen of the outdoor unit condenser, when the dust accumulation reaches a certain level, the parking air conditioner is controlled to enter the self-cleaning mode of the outdoor unit condenser, causing the condenser to frost and remove dust, thus achieving the self-cleaning function. While controlling the parking air conditioner to enter the self-cleaning mode and perform frosting and dust removal, the frosting area of ​​the outdoor unit condenser is matched to the dust accumulation on the filter screen based on the dust accumulation detected by the infrared sensor, and the degree of frosting is sufficient and uniform. This results in a better cleaning effect for the outdoor unit condenser, reducing the cleaning difficulty and ensuring the cleaning effect.

[0034] According to embodiments of the present invention, a method for cleaning the outdoor unit of a parking air conditioner is provided, such as... Figure 1 The diagram shows a flowchart of an embodiment of the method of the present invention. The parking air conditioner has an indoor unit and an outdoor unit; the indoor unit has an in-vehicle heat exchanger; the outdoor unit has an external heat exchanger and an external fan; a filter 40 is provided in a localized area of ​​the external heat exchanger as a reference for determining the dust accumulation on the external heat exchanger, such as an outdoor unit condenser 30; an infrared detection device, such as an infrared sensor 20, is provided between the chassis 10 of the vehicle where the parking air conditioner is located and the filter 40 of the external heat exchanger; the infrared detection device can detect the dust accumulation on the filter 40 of the external heat exchanger by emitting infrared light to the filter 40 and receiving the reflected light, thus providing the amount of dust on the filter 40. Specifically, Figure 4This is a schematic diagram of the detection structure of the infrared sensor in the parking air conditioner outdoor unit based on the infrared sensor of the present invention. Figure 5 This is a schematic diagram of an embodiment of the parking air conditioner outdoor unit based on an infrared sensor according to the present invention, wherein (a) is a schematic diagram of the structure of the parking air conditioner outdoor unit, and (b) is a schematic diagram of the AA cross-sectional structure of the parking air conditioner outdoor unit. Figure 6 A partial structural schematic diagram of an embodiment of the condenser and infrared sensor in the outdoor unit of a parking air conditioner based on an infrared sensor according to the present invention. (See attached diagram.) Figure 4 , Figure 5 and Figure 6 As shown, an infrared sensor 20 is installed on the chassis 10 of the vehicle where the parking air conditioner is located. The infrared sensor 20 is located inside the filter 40 of the outdoor unit condenser 30 of the parking air conditioner. Here, "inside the filter 40 of the outdoor unit condenser 30" means that the filter 40 is located on the side of the vehicle inside the parking air conditioner. The area where the filter 40 is installed is only the infrared detection area of ​​the outdoor unit condenser 30; that is, the area covered by the filter 40 is only the infrared detection area of ​​the infrared sensor 20.

[0035] Among them, the infrared sensor 20 uses infrared light to detect the dust accumulation on the filter 40 of the outdoor unit condenser 30, which can be found in [reference needed]. Figure 4 The example shown. For example... Figure 4 As shown, an adapter box for an infrared sensor 20 is installed on the PCB board of the parking air conditioner's display. The adapter box for the infrared sensor 20 has a controller transmitter and a controller receiver. Infrared light emitted by the controller transmitter on the adapter box is reflected after passing through the filter 40 of the outdoor unit condenser 30 and is received by the controller receiver on the adapter box. The intensity of the received reflected infrared light is converted to a value corresponding to the intensity of the received reflected infrared light. This value indicates the dust accumulation on the filter 40 of the outdoor unit condenser 30. This value is displayed on the parking air conditioner's display to show the dust accumulation on the filter 40 of the outdoor unit condenser 30, indicating the degree of clogging.

[0036] If the filter 40 of the outdoor unit condenser 30 is severely clogged, the infrared light emitted by the controller transmitter on the adapter box of the infrared sensor 20 will have difficulty passing through the filter 40 before being emitted. Therefore, the amount of reflected infrared light received is large, and the corresponding value of the intensity of the received reflected infrared light is relatively large. If the filter 40 of the outdoor unit condenser 30 is only slightly clogged, some of the infrared light emitted by the controller transmitter on the adapter box of the infrared sensor 20 will pass through the filter 40 before being emitted. Therefore, the amount of reflected infrared light received is small, and the corresponding value of the intensity of the received reflected infrared light is relatively small.

[0037] In some embodiments, the infrared detection device is specifically installed on the chassis 10 of the vehicle where the parking air conditioner is located, in an area where the flatness of the fin surface of the external heat exchanger reaches a set flatness range, and inside the filter 40 of the external heat exchanger; after the infrared light emitting end of the infrared detection device emits infrared light, the angle range at which the infrared light reaches the filter 40 of the external heat exchanger is within a set angle range, such as within an angle range of 80° to 100°, and the distance between the infrared light emitting end of the infrared detection device and the filter 40 of the external heat exchanger is within a set distance range, such as within a distance range of 50mm to 100mm.

[0038] Specifically, such as Figure 5 As shown, the infrared sensor is mounted on the chassis 10, located on the inner side of a relatively flat area on the fin surface of the outdoor unit condenser 30 of the parking air conditioner. Figure 6 As shown, the infrared sensor 20 is positioned inside the filter 40 of the outdoor unit condenser 30. This can be the transparent area in the center of the infrared sensor 20 that emits infrared light, corresponding to a corner of the outdoor unit condenser 30 (where dust is less likely to accumulate). Specifically, the infrared light emitted from the controller transmitter on the adapter box of the infrared sensor 20 must reach the filter 40 of the outdoor unit condenser 30 at an angle α (80°≤α≤100°), and the distance between the filter 40 of the outdoor unit condenser 30 and the controller transmitter or receiver on the adapter box of the infrared sensor 20 must be d (50mm≤α≤100mm). The angle at which the infrared light emitted from the controller transmitter on the adapter box of the infrared sensor 20 reaches the filter 40 of the outdoor unit condenser 30 refers to the angle between the infrared light emitted from the controller transmitter on the adapter box and the edge line of the filter 40 reaching its maximum range.

[0039] In the solution of the present invention, such as Figure 1 As shown, the method for cleaning the outdoor unit of the parking air conditioner includes steps S110 to S140.

[0040] In step S110, the dust accumulation on the filter 40 of the external heat exchanger, detected by the infrared detection device, is recorded as the dust amount on the filter 40 of the external heat exchanger; the pipe temperature of the internal heat exchanger is also recorded as the internal pipe temperature of the parking air conditioner, such as T. 内管 After the parking air conditioner is turned on, the operating time of the parking air conditioner is accumulated to obtain the cumulative operating time of the parking air conditioner, such as the cumulative operating time T; and, when the parking air conditioner is running after being turned on, the operating parameters of the outdoor fan are obtained.

[0041] Specifically, Figure 7 This is a flowchart illustrating an embodiment of the self-cleaning control logic for the outdoor unit condenser of a parking air conditioner based on an infrared sensor, according to the present invention. Figure 7 The infrared dirt blockage warning function logic shown is designed to address the situation where dust accumulates on the filter 40 of the outdoor unit condenser 30, without considering a sudden increase in dust. For example... Figure 7 As shown, the self-cleaning control logic for the outdoor unit condenser of the parking air conditioner based on infrared sensors includes: Step 1: When executing the self-cleaning control logic for the outdoor unit condenser of the parking air conditioner based on infrared sensors, Step 11 needs to be executed to detect the operating parameters of the outdoor fan of the parking air conditioner; Step 12 needs to be executed to detect the dust accumulation on the filter screen 40 of the outdoor unit condenser 30; Step 13 needs to be executed to detect the cumulative operating time T of the parking air conditioner; and Step 14 needs to be executed to detect the pipe temperature T of the indoor heat exchanger of the parking air conditioner. 内管 Then, step 2 is executed to bring the infrared dirt detection process into the alert stage.

[0042] Step 11: Detect the operating parameters of the parking air conditioner's outdoor fan, such as the PWM sampling value. Pre-set a threshold parameter, such as operating parameter threshold A, to determine whether to enter the self-cleaning mode of the parking air conditioner's outdoor unit condenser 30 based on the operating parameters of the outdoor fan. Here, A is a constant, a parameter threshold set in the controller, where 150 ≤ A ≤ 300.

[0043] Step 12: Using the infrared sensor 20 installed between the chassis 10 and the outdoor unit condenser 30, detect the dust accumulation on the filter screen 40 of the outdoor unit condenser 30, and record it as the infrared detection value Li, where i is the number of detections. Pre-set threshold parameters based on the infrared detection value Li detected by the infrared sensor 20 to determine whether to enter the self-cleaning mode of the parking air conditioner outdoor unit condenser 30, such as dust accumulation thresholds B, D, and E. Here, B, D, and E are constants, which are parameter thresholds set in the controller: 500≤B≤1000, 150≤D≤300, 200≤E≤400, while simultaneously satisfying D≤E.

[0044] Step 13: Detect the cumulative operating time T of the parking air conditioner. Specifically, after the parking air conditioner is turned on, the operating time is accumulated to obtain the cumulative operating time T. A threshold parameter, such as a time threshold C, is preset to determine whether to enter the self-cleaning mode of the outdoor unit condenser 30 of the parking air conditioner based on the cumulative operating time T. Here, C is a constant, and 150 ≤ C ≤ 250.

[0045] Step 14: Detect the pipe temperature T of the indoor heat exchanger of the parking air conditioner. 内管 During the process of using the infrared sensor 20 installed between the chassis 10 and the outdoor unit condenser 30 to detect the dust accumulation on the filter screen 40 of the outdoor unit condenser 30, if the infrared detection value Li ≤ the initial infrared detection value Lo-B, or the infrared detection value Li ≥ the initial infrared detection value Lo+B, then based on the infrared detection value Li detected by the infrared sensor 20, it is determined whether to enter the self-cleaning mode of the parking air conditioner outdoor unit condenser 30. This requires checking the pipe temperature T of the indoor heat exchanger of the parking air conditioner. 内管 Performed at ≥5℃.

[0046] In step S120, based on the cumulative operating time of the parking air conditioner, combined with the amount of dust on the filter 40 of the external heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the external fan, a reminder is issued regarding the clogging status of the filter 40 of the external heat exchanger to determine if cleaning of the filter 40 is necessary. Specifically, as... Figure 7 As shown, the self-cleaning control logic of the parking air conditioner outdoor unit condenser based on infrared sensors also includes: step 2, the infrared dirt blockage detection process enters the reminder stage, and then step 3 is executed to execute the infrared dirt blockage detection process enters the exit reminder stage.

[0047] In some embodiments, during step S110, when the dirt and clogging status of the filter 40 of the vehicle exterior heat exchanger detected by the infrared detection device is obtained and recorded as the dust amount of the filter 40 of the vehicle exterior heat exchanger, the initially obtained dust amount of the filter 40 of the vehicle exterior heat exchanger is recorded as the initial dust amount of the filter 40 of the vehicle exterior heat exchanger; and the currently obtained dust amount of the filter 40 of the vehicle exterior heat exchanger is recorded as the current dust amount of the filter 40 of the vehicle exterior heat exchanger. Specifically, as... Figure 7 As shown, in step 12, at the start of detection, the initial infrared detection value Li is recorded as the initial infrared detection value Lo. After detection begins, the currently detected infrared detection value Li is recorded as the current infrared detection value Ln.

[0048] In step S110, during the process of acquiring the operating parameters of the external fan after the parking air conditioner is turned on and running, the initially acquired operating parameters of the external fan are recorded as the initial operating parameters of the external fan; and the currently acquired operating parameters of the external fan during its operation are recorded as the current operating parameters of the external fan. The operating parameters of the external fan can be motor drive parameters of the external fan, such as PWM parameters.

[0049] In step S120, based on the cumulative operating time of the parking air conditioner, combined with the amount of dust on the filter 40 of the external heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the external fan, a reminder is issued regarding the clogging status of the filter 40 of the external heat exchanger to determine if cleaning of the filter 40 is necessary. This includes any of the following situations that determine the clogging status of the filter 40: Figure 7 As shown, the reminder stage of the infrared dirt detection process in step 2 is specifically divided into four stages: namely, steps 21, 22, 23, and 24.

[0050] The first scenario for determining the clogging status of the filter 40 of the vehicle's external heat exchanger is as follows: If the cumulative operating time of the parking air conditioner is less than or equal to a set operating time, it is determined whether the absolute value of the difference between the current dust level and the initial dust level of the filter 40 of the vehicle's external heat exchanger is greater than or equal to a first set dust level, and whether the difference between the current operating parameters and the initial operating parameters of the external fan is greater than a set operating parameter. If these conditions are met, a reminder message regarding the clogging status of the filter 40 of the vehicle's external heat exchanger is issued to alert the user. Here, the set operating time is, for example, C hours; the first set dust level is, for example, B; and the set operating parameters are, for example, A.

[0051] Specifically, such as Figure 7 As shown, in step 21, the first stage, the cumulative operating time of the parking air conditioner is T≤C. If T is less than 240h, when the change in the infrared detection value Li detected by the infrared sensor 20, that is, the change in dust on the filter 40 of the outdoor unit condenser 30 of the parking air conditioner |Ln-Lo|≥B, and the fan blockage warning condition is met at the same time, the display box (such as the display of the parking air conditioner) will light up to remind that the filter 40 of the outdoor unit condenser 30 of the parking air conditioner is blocked and needs to be cleaned; otherwise, if the above conditions are not met, the next stage (i.e., the second stage) will be entered.

[0052] The condition for alerting the fan to be dirty or clogged can be as follows: compare the current operating parameters of the outdoor fan of the parking air conditioner, such as the current value of the PWM sampling value, with the initial operating parameters of the outdoor fan of the parking air conditioner, such as the initial value of the PWM sampling value. If the difference between the two is greater than A, it is determined that the self-cleaning mode of the outdoor unit condenser 30 of the parking air conditioner needs to be entered.

[0053] The second method for determining the clogging status of the filter 40 of the vehicle's external heat exchanger is as follows: If the cumulative operating time of the parking air conditioner is greater than the set operating time but less than or equal to three times the set operating time, then it is determined whether the absolute value of the difference between the current dust amount and the initial dust amount of the filter 40 of the vehicle's external heat exchanger is greater than or equal to a first set dust amount, and whether the difference between the current operating parameters and the initial operating parameters of the external fan is greater than a set operating parameter. If these conditions are met, a reminder message regarding the clogging status of the filter 40 of the vehicle's external heat exchanger is issued to alert the user. Here, the set operating time is, for example, C hours; the first set dust amount is, for example, B; and the set operating parameters are, for example, A.

[0054] Specifically, such as Figure 7 As shown, in step 22, the second stage, the cumulative operating time of the parking air conditioner is C < T ≤ 3C, such as 240h ≤ T < 720h: when the dust change in the filter 40 of the outdoor unit condenser 30 of the parking air conditioner |Ln-Lo| ≥ B, and the fan blockage warning condition is met simultaneously, the display box (such as the parking air conditioner's display) will light up to remind that the filter 40 of the outdoor unit condenser 30 of the parking air conditioner is blocked and needs to be cleaned. Otherwise, if the aforementioned conditions are not met, the process proceeds to the next stage (i.e., the third stage).

[0055] The third scenario for determining the clogging status of the filter 40 of the vehicle's external heat exchanger: If the cumulative operating time of the parking air conditioner is greater than three times the set operating time and less than or equal to five times the set operating time, then it is determined whether the absolute value of the difference between the current dust amount and the initial dust amount of the filter 40 of the vehicle's external heat exchanger is greater than or equal to a first set dust amount, or whether the difference between the current operating parameters and the initial operating parameters of the external fan is greater than a set operating parameter. If these conditions are met, a reminder message regarding the clogging status of the filter 40 of the vehicle's external heat exchanger is issued to alert the user. Here, the set operating time is, for example, C hours; the first set dust amount is, for example, B; and the set operating parameters are, for example, A.

[0056] Specifically, such as Figure 7As shown, in step 23, the third stage, the cumulative operating time of the parking air conditioner is 3C < T ≤ 5C, such as 720h ≤ T < 1200h: when the dust change |Ln-Lo| ≥ B or the fan blockage warning condition is met, the display box (such as the parking air conditioner's display) will light up to remind that the filter 40 of the outdoor unit condenser 30 of the parking air conditioner is blocked and needs to be cleaned. Otherwise, if the aforementioned conditions are not met, the process proceeds to the next stage (i.e., the fourth stage).

[0057] The fourth scenario for determining the clogging status of the filter 40 of the vehicle's external heat exchanger: If the cumulative operating time of the parking air conditioner exceeds five times the set operating time, a reminder message regarding the clogging status of the filter 40 of the external heat exchanger will be issued to alert the user. The set operating time is, for example, C hours; the first set dust level is, for example, B; and the set operating parameters are, for example, A.

[0058] Specifically, such as Figure 7 As shown in step 24, the fourth stage, when the cumulative operating time of the parking air conditioner is 5C < T, such as 1200h ≤ T, the display box will light up, directly reminding the user that the outdoor unit condenser of the parking air conditioner needs to be cleaned 30.

[0059] In some implementations, step S120, based on the cumulative operating time of the parking air conditioner, combined with the dust level of the filter 40 of the external heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the external fan, provides a reminder regarding the clogging status of the filter 40 of the external heat exchanger to determine if cleaning of the filter 40 is necessary. This further includes: in the first scenario of determining the clogging status of the filter 40 of the external heat exchanger, if the cumulative operating time of the parking air conditioner equals the set operating time, and the current dust level of the filter 40 of the external heat exchanger... If the absolute value of the difference between the current dust level and the initial dust level of the filter 40 of the external heat exchanger is less than the first set dust level, then: if the absolute value of the difference between the current dust level and the initial dust level of the filter 40 of the external heat exchanger is less than the second set dust level, the recorded cumulative operating time of the parking air conditioner is reset to zero, and then the operating time of the parking air conditioner is re-accumulated to obtain a new cumulative operating time of the parking air conditioner, such as the new cumulative operating time T; the second set dust level is less than the first set dust level. The second set dust level is, for example, D.

[0060] Specifically, such as Figure 7As shown, in step 21, if the change in dust on the filter 40 of the outdoor unit condenser 30 of the parking air conditioner is |Ln-Lo| < B, and the cumulative operating time T of the parking air conditioner is T = C: if the change in dust on the filter 40 of the outdoor unit condenser 30 of the parking air conditioner is |Ln-Lo| < D, then the cumulative operating time T of the parking air conditioner is set to 0 (i.e., the cumulative operating time T of the parking air conditioner is reset to zero and the timer is restarted); otherwise, if the aforementioned conditions are not met, then the next stage (i.e., the second stage) is entered.

[0061] In step S130, after alerting the user to the clogging status of the filter 40 of the external heat exchanger, the user cleans the clogging status of the filter 40 based on the amount of dust on the filter 40 and the internal pipe temperature of the parking air conditioner. Specifically, as follows... Figure 7 As shown, the self-cleaning control logic of the parking air conditioner outdoor unit condenser based on infrared sensors also includes: step 3, the logic of entering and exiting the reminder after the entire infrared dirt detection process.

[0062] In some embodiments, during the process of recording the current dust amount of the filter screen 40 of the vehicle exterior heat exchanger in step S110, specifically, the dust amount of the filter screen 40 of the vehicle exterior heat exchanger is recorded once at a set detection interval within a set time interval, and is recorded as the i-th dust amount of the filter screen 40 of the vehicle exterior heat exchanger, where i is a positive integer; wherein, in the i-th dust amount of the filter screen 40 of the vehicle exterior heat exchanger, the current i-th dust amount of the filter screen 40 of the vehicle exterior heat exchanger is recorded as the current dust amount of the filter screen 40 of the vehicle exterior heat exchanger; wherein, the detection interval is set to, for example, 1 minute.

[0063] Specifically, such as Figure 7 As shown, in step 12, after the initial infrared detection value Lo is detected, the infrared detection value Li is recorded every set interval (e.g., 30s) within a set time interval. For example, the infrared detection value L1 is detected in the first 30s, L2 in the second 30s, L3 in the third 30s, ..., Lm in the mth 30s, and Ln in the nth 30s, where m and n are both positive integers. The change in infrared detection value Li between two consecutive detections is ΔL, such as ΔL = Lm - Ln.

[0064] In step S130, after alerting the user to the dirt and clogging status of the filter 40 of the external heat exchanger, the user then clears the dirt and clogging status of the filter 40 of the external heat exchanger based on the amount of dust on the filter 40 and the internal pipe temperature of the parking air conditioner. This includes any of the following scenarios for clearing the dirt and clogging status of the filter 40 of the external heat exchanger:

[0065] The first scenario for alerting the vehicle's external heat exchanger filter 40 to clean its clogged state is as follows: If the internal pipe temperature of the parking air conditioner is greater than or equal to a set pipe temperature, and the absolute value of the difference between the current dust level and the previous dust level of the external heat exchanger filter 40 for a consecutive set number of times is greater than or equal to a third set dust level, then it is determined that the external heat exchanger has been cleaned. Furthermore, if an alert has already been issued regarding the clogged state of the external heat exchanger filter 40: the alert regarding the clogged state of the external heat exchanger filter 40 is then... The following steps are performed: Clear the recorded cumulative operating time of the parking air conditioner; then, re-accumulate the operating time of the parking air conditioner to obtain a new cumulative operating time, such as the new cumulative operating time T; clear the recorded initial dust amount of the filter 40 of the external heat exchanger; then, record the newly acquired current dust amount of the filter 40 of the external heat exchanger as the new initial dust amount of the filter 40 of the external heat exchanger; the third set dust amount is less than the first set dust amount and greater than or equal to the second set dust amount. The third set dust amount is, for example, E, and the set pipe temperature is, for example, 5°C.

[0066] Specifically, in step 3, the logic for entering and exiting the infrared dirt detection process includes: Step 31, comparing the current infrared sampling value every 1 minute with the previously saved sampling value. If the change (i.e., |Lm-Ln|) is ≥E twice consecutively, the outdoor unit condenser 30 of the parking air conditioner is considered clean. If the outdoor unit condenser 30 of the parking air conditioner is considered clean, and a previous reminder has been issued, the reminder is cleared, and the cumulative operating time T is reset to zero. Afterward, the initial infrared detection value Lo needs to be re-acquired, and the initial operating parameters of the vehicle's outdoor fan also need to be re-acquired. In step 31, the outdoor unit condenser 30 needs to frost during self-cleaning. If the initial outside temperature is too low, it will affect the frosting effect, so it needs to be adjusted according to T. 内管 Performed at ≥5℃.

[0067] The second scenario involves cleaning the filter 40 of the external heat exchanger in response to a warning about clogging: If the internal pipe temperature of the parking air conditioner is greater than or equal to the set pipe temperature, and if the cumulative operating time of the parking air conditioner is greater than or equal to the set operating time but no warning is issued regarding clogging of the filter 40 of the external heat exchanger, it is determined whether the current dust amount detected within a continuous set time is greater than or equal to the difference between the initial dust amount and the second set dust amount of the filter 40, and less than or equal to the sum of the initial dust amount and the second set dust amount of the filter 40. If this condition is met, it is determined that the external heat exchanger has been cleaned, and the recorded current cumulative operating time of the parking air conditioner is reset to zero. Then, the operating time of the parking air conditioner is re-accumulated to obtain a new cumulative operating time, such as the new cumulative operating time T. Here, the second set dust amount is such as D, the set pipe temperature is such as 5°C, and the continuous set time is such as 30 seconds.

[0068] Specifically, such as Figure 7 As shown, in step 3, the logic for the entire infrared dirt detection process, from entering the alert stage to exiting the alert stage, also includes: step 32, in T... 内管 When the temperature is ≥5℃, if the cumulative operating time T≥C and the reminder stage has not been entered, and simultaneously the following conditions are met: the initial infrared detection value Lo-D≤Li≤the initial infrared detection value Lo+D is detected for 30 consecutive seconds, then the outdoor unit condenser 30 of the parking air conditioner is considered to have been cleaned. Only the cumulative operating time T is reset to zero and recounted; the recorded initial infrared detection value Lo and the initial operating parameters of the outdoor fan are not cleared. Step 32 is the protection logic for exiting the dirt / clogging reminder.

[0069] In step S140, if it is determined that the filter 40 of the external heat exchanger needs to be cleaned, the parking air conditioner is controlled to enter a preset self-cleaning mode according to the operating status of the indoor unit, so as to achieve self-cleaning of the filter 40 of the external heat exchanger. Specifically, as follows... Figure 7 As shown, the self-cleaning control logic of the outdoor unit condenser of the parking air conditioner based on the infrared sensor also includes: Step 4: When the cleaning conditions of the outdoor unit condenser 30 of the parking air conditioner are met, the system selects whether to enter the self-cleaning mode of the outdoor unit condenser 30 of the parking air conditioner based on the user's cleaning command or to automatically enter the self-cleaning mode of the outdoor unit condenser 30 of the parking air conditioner, depending on the operation of the indoor unit of the parking air conditioner.

[0070] The present invention proposes a method for implementing the self-cleaning control logic of a parking air conditioner outdoor unit based on an infrared sensor. This method uses an infrared sensor to detect the dust accumulation on the filter 40 of the outdoor unit condenser. When the dust accumulation on the filter 40 reaches a certain level, the parking air conditioner is controlled to enter a self-cleaning mode, causing the outdoor unit condenser to frost and remove dust, thus achieving a self-cleaning function. While the parking air conditioner is in self-cleaning mode and frosting and removing dust, the method ensures that the frosting area of ​​the outdoor unit condenser matches the dust accumulation on the filter 40, and that the frosting is sufficient and uniform, based on the dust accumulation detected by the infrared sensor. This results in a better cleaning effect for the outdoor unit condenser.

[0071] In some embodiments, in step S140, when it is determined that the filter 40 of the vehicle exterior heat exchanger needs to be cleaned, the parking air conditioner is controlled to enter a preset self-cleaning mode according to the operating status of the indoor unit, so as to realize the specific process of self-cleaning the filter 40 of the vehicle exterior heat exchanger. See the following exemplary description.

[0072] The following is combined with Figure 2 The flowchart shown is a schematic diagram of an embodiment of the method of the present invention for controlling the parking air conditioner to enter a preset self-cleaning mode. It further illustrates the specific process of controlling the parking air conditioner to enter the preset self-cleaning mode in step S140, including steps S210 to S230.

[0073] Step S210: Determine whether the indoor unit is in a running state or a non-running state.

[0074] Step S220: If it is determined that the indoor unit is in operation, then upon receiving a cleaning command initiated by the user, such as a cleaning command initiated by the user based on a reminder of the dirt and clogging status of the filter 40 of the vehicle's external heat exchanger, the parking air conditioner is controlled to enter a preset self-cleaning mode, so as to frost and remove dust from the external heat exchanger according to the current amount of dust on the filter 40 of the external heat exchanger, thereby achieving self-cleaning of the filter 40 of the external heat exchanger.

[0075] Step S230: If it is determined that the indoor unit is in a non-operational state, the parking air conditioner is controlled to enter a preset self-cleaning mode, so as to frost and remove dust from the outdoor heat exchanger according to the current dust amount of the filter screen 40 of the outdoor heat exchanger, thereby achieving self-cleaning of the filter screen 40 of the outdoor heat exchanger.

[0076] Specifically, such as Figure 7 As shown, the self-cleaning control logic for the outdoor unit condenser of the parking air conditioner based on infrared sensors further includes: In step 4, when the cleaning conditions for the outdoor unit condenser 30 of the parking air conditioner are met, if the indoor unit of the parking air conditioner is running, the user needs to select whether to enter the self-cleaning mode of the outdoor unit condenser 30 of the parking air conditioner via remote control; when the indoor unit is not running, self-cleaning will be performed automatically. During self-cleaning, the infrared sensor ensures that the frost area of ​​the outdoor unit condenser of the parking air conditioner is sufficiently uniform, thereby achieving a better cleaning effect for the outdoor unit condenser of the parking air conditioner.

[0077] In this invention, an infrared sensor is used to detect the dust accumulation on the filter 40 of the outdoor unit condenser of the parking air conditioner. Based on the dust accumulation on the filter 40, the system determines whether to enter self-cleaning mode. When self-cleaning mode is entered, the infrared sensor ensures that the frosting area on the outdoor unit condenser is sufficiently uniform. One function of the infrared sensor 20 is to monitor temperature and generate a temperature rise graph. Frosting on the outdoor unit condenser 30 occurs when the entire pipe cools down and frost forms on the fins. Therefore, as long as the infrared sensor 20 ensures a sufficiently thick frost layer in the detectable area, sufficient frost formation is guaranteed, resulting in a better cleaning effect for the outdoor unit condenser. Thus, the infrared sensor can detect the dust accumulation on the filter 40 of the outdoor unit condenser more promptly, and the self-cleaning control logic of the outdoor unit condenser enables timely cleaning, ensuring the cooling and heating effects of the parking air conditioner.

[0078] The technical solution of this embodiment involves installing an infrared sensor at the outdoor unit condenser of the parking air conditioner. The infrared sensor detects the dust accumulation on the filter 40 of the outdoor unit condenser and determines whether to enter the self-cleaning mode based on the dust accumulation. When the dust accumulation on the filter 40 reaches a certain level, the parking air conditioner is controlled to enter the self-cleaning mode, causing the outdoor unit condenser to frost and remove dust, thus achieving the self-cleaning function. The system controls the parking air conditioner to enter the self-cleaning mode when it is in parking mode. When the outdoor unit condenser of the air conditioner enters the self-cleaning mode and performs frosting and dust removal, the infrared sensor detects the dust accumulation on the filter screen 40 of the outdoor unit condenser of the parking air conditioner. This ensures that the frosting area of ​​the outdoor unit condenser matches the dust accumulation on the filter screen 40, and that the frosting is sufficient and uniform, thus guaranteeing the effectiveness of frosting and dust removal. Therefore, by combining the detection of dust accumulation on the filter screen 40 of the outdoor unit condenser of the parking air conditioner with the infrared sensor, the self-cleaning of the outdoor unit condenser of the parking air conditioner is controlled, reducing the difficulty of cleaning the outdoor unit condenser of the parking air conditioner while ensuring the cleaning effect.

[0079] According to an embodiment of the present invention, a cleaning device for the outdoor unit of a parking air conditioner, corresponding to a method for cleaning the outdoor unit of a parking air conditioner, is also provided. See also Figure 3 The diagram shows a structural schematic of an embodiment of the device of the present invention. The parking air conditioner includes an indoor unit and an outdoor unit; the indoor unit includes an in-vehicle heat exchanger; the outdoor unit includes an external heat exchanger and an external fan; a filter screen 40 is provided in a localized area of ​​the external heat exchanger, serving as a reference for determining the dust accumulation on the external heat exchanger, such as an outdoor unit condenser 30; an infrared detection device, such as an infrared sensor 20, is provided between the chassis 10 of the vehicle where the parking air conditioner is located and the filter screen 40 of the external heat exchanger; the infrared detection device can detect the dust accumulation on the filter screen 40 of the external heat exchanger by emitting infrared light to the filter screen 40 and receiving the reflected light, thus providing the amount of dust on the filter screen 40. Specifically, Figure 4 This is a schematic diagram of the detection structure of the infrared sensor in the parking air conditioner outdoor unit based on the infrared sensor of the present invention. Figure 5 This is a schematic diagram of an embodiment of the parking air conditioner outdoor unit based on an infrared sensor according to the present invention, wherein (a) is a schematic diagram of the structure of the parking air conditioner outdoor unit, and (b) is a schematic diagram of the AA cross-sectional structure of the parking air conditioner outdoor unit. Figure 6 A partial structural schematic diagram of an embodiment of the condenser and infrared sensor in the outdoor unit of a parking air conditioner based on an infrared sensor according to the present invention. (See attached diagram.) Figure 4 , Figure 5and Figure 6 As shown, an infrared sensor 20 is installed on the chassis 10 of the vehicle where the parking air conditioner is located; the infrared sensor 20 is located inside the filter 40 of the outdoor unit condenser 30 of the parking air conditioner. Here, "inside the filter 40 of the outdoor unit condenser 30" means that the filter 40 of the outdoor unit condenser 30 is located on the side inside the vehicle where the parking air conditioner is located.

[0080] Among them, the infrared sensor 20 uses infrared light to detect the dust accumulation on the filter 40 of the outdoor unit condenser 30, which can be found in [reference needed]. Figure 4 The example shown. For example... Figure 4 As shown, an adapter box for an infrared sensor 20 is installed on the PCB board of the parking air conditioner's display. The adapter box for the infrared sensor 20 has a controller transmitter and a controller receiver. Infrared light emitted by the controller transmitter on the adapter box is reflected after passing through the filter 40 of the outdoor unit condenser 30 and is received by the controller receiver on the adapter box. The intensity of the received reflected infrared light is converted to a value corresponding to the intensity of the received reflected infrared light. This value indicates the dust accumulation on the filter 40 of the outdoor unit condenser 30. This value is displayed on the parking air conditioner's display to show the dust accumulation on the filter 40 of the outdoor unit condenser 30, indicating the degree of clogging.

[0081] If the filter 40 of the outdoor unit condenser 30 is severely clogged, the infrared light emitted by the controller transmitter on the adapter box of the infrared sensor 20 will have difficulty passing through the filter 40 before being emitted. Therefore, the amount of reflected infrared light received is large, and the corresponding value of the intensity of the received reflected infrared light is relatively large. If the filter 40 of the outdoor unit condenser 30 is only slightly clogged, some of the infrared light emitted by the controller transmitter on the adapter box of the infrared sensor 20 will pass through the filter 40 before being emitted. Therefore, the amount of reflected infrared light received is small, and the corresponding value of the intensity of the received reflected infrared light is relatively small.

[0082] In some embodiments, the infrared detection device is specifically installed on the chassis 10 of the vehicle where the parking air conditioner is located, in an area where the flatness of the fin surface of the external heat exchanger reaches a set flatness range, and inside the filter 40 of the external heat exchanger; after the infrared light emitting end of the infrared detection device emits infrared light, the angle range at which the infrared light reaches the filter 40 of the external heat exchanger is within a set angle range, such as within an angle range of 80° to 100°, and the distance between the infrared light emitting end of the infrared detection device and the filter 40 of the external heat exchanger is within a set distance range, such as within a distance range of 50mm to 100mm.

[0083] Specifically, such as Figure 5 As shown, the infrared sensor is mounted on the chassis 10, located on the inner side of a relatively flat area on the fin surface of the outdoor unit condenser 30 of the parking air conditioner. Figure 6 As shown, the placement of the infrared sensor 20 inside the filter 40 of the outdoor unit condenser 30 must ensure that the infrared light emitted from the controller transmitter on the adapter box of the infrared sensor 20 reaches the filter 40 of the outdoor unit condenser 30 at an angle α (80°≤α≤100°), and the distance between the filter 40 of the outdoor unit condenser 30 and the controller transmitter on the adapter box of the infrared sensor 20 is d (50mm≤α≤100mm). The angle at which the infrared light emitted from the controller transmitter on the adapter box of the infrared sensor 20 reaches the filter 40 of the outdoor unit condenser 30 refers to the angle between the infrared light emitted from the controller transmitter on the adapter box and the edge line reaching the maximum range of the filter 40 of the outdoor unit condenser 30.

[0084] In the solution of the present invention, such as Figure 3 As shown, the outdoor unit cleaning device for the parking air conditioner includes: an acquisition unit 102 and a control unit 104.

[0085] The acquisition unit 102 is configured to acquire the dust accumulation on the filter 40 of the external heat exchanger detected by the infrared detection device, and record it as the amount of dust on the filter 40 of the external heat exchanger; and to acquire the pipe temperature of the internal heat exchanger, and record it as the internal pipe temperature of the parking air conditioner, such as T. 内管 After the parking air conditioner is turned on, the operating time of the parking air conditioner is accumulated to obtain the cumulative operating time of the parking air conditioner, such as the cumulative operating time T; and, when the parking air conditioner is running after being turned on, the operating parameters of the external fan are acquired. The specific functions and processing of this acquisition unit 102 are described in step S110.

[0086] Specifically, Figure 7This is a flowchart illustrating an embodiment of the self-cleaning control logic for the outdoor unit condenser of a parking air conditioner based on an infrared sensor, according to the present invention. Figure 7 The infrared dirt blockage warning function logic shown is designed to address the situation where dust accumulates on the filter 40 of the outdoor unit condenser 30, without considering a sudden increase in dust. For example... Figure 7 As shown, the self-cleaning control logic for the outdoor unit condenser of the parking air conditioner based on infrared sensors includes: Step 1: When executing the self-cleaning control logic for the outdoor unit condenser of the parking air conditioner based on infrared sensors, Step 11 needs to be executed to detect the operating parameters of the outdoor fan of the parking air conditioner; Step 12 needs to be executed to detect the dust accumulation on the filter screen 40 of the outdoor unit condenser 30; Step 13 needs to be executed to detect the cumulative operating time T of the parking air conditioner; and Step 14 needs to be executed to detect the pipe temperature T of the indoor heat exchanger of the parking air conditioner. 内管 Then, step 2 is executed to bring the infrared dirt detection process into the alert stage.

[0087] Step 11: Detect the operating parameters of the parking air conditioner's outdoor fan, such as the PWM sampling value. Pre-set a threshold parameter, such as operating parameter threshold A, to determine whether to enter the self-cleaning mode of the parking air conditioner's outdoor unit condenser 30 based on the operating parameters of the outdoor fan. Where A is a constant, 150 ≤ A ≤ 300.

[0088] Step 12: Using the infrared sensor 20 installed between the chassis 10 and the outdoor unit condenser 30, detect the dust accumulation on the filter screen 40 of the outdoor unit condenser 30, and record it as the infrared detection value Li, where i is the number of detections. Pre-set threshold parameters for determining whether to enter the self-cleaning mode of the parking air conditioner outdoor unit condenser 30 based on the infrared detection value Li detected by the infrared sensor 20, such as dust accumulation thresholds B, D, and E. Where B, D, and E are constants, 500≤B≤1000, 150≤D≤300, 200≤E≤400, and D≤E is satisfied simultaneously.

[0089] Step 13: Detect the cumulative operating time T of the parking air conditioner. Specifically, after the parking air conditioner is turned on, the operating time is accumulated to obtain the cumulative operating time T. A threshold parameter, such as a time threshold C, is preset to determine whether to enter the self-cleaning mode of the outdoor unit condenser 30 of the parking air conditioner based on the cumulative operating time T. Here, C is a constant, and 150 ≤ C ≤ 250.

[0090] Step 14: Detect the pipe temperature T of the indoor heat exchanger of the parking air conditioner. 内管During the process of using the infrared sensor 20 installed between the chassis 10 and the outdoor unit condenser 30 to detect the dust accumulation on the filter screen 40 of the outdoor unit condenser 30, if the infrared detection value Li ≤ the initial infrared detection value Lo-B, or the infrared detection value Li ≥ the initial infrared detection value Lo+B, then based on the infrared detection value Li detected by the infrared sensor 20, it is determined whether to enter the self-cleaning mode of the parking air conditioner outdoor unit condenser 30. This requires checking the pipe temperature T of the indoor heat exchanger of the parking air conditioner. 内管 Performed at ≥5℃.

[0091] The control unit 104 is configured to, based on the cumulative operating time of the parking air conditioner, combined with the amount of dust on the filter 40 of the external heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the external fan, to alert the user to the clogging status of the filter 40 of the external heat exchanger, and to determine whether the filter 40 needs cleaning. The specific functions and processing of this control unit 104 are described in step S120. Specifically, as... Figure 7 As shown, the self-cleaning control logic of the parking air conditioner outdoor unit condenser based on infrared sensors also includes: step 2, the infrared dirt blockage detection process enters the reminder stage, and then step 3 is executed to execute the infrared dirt blockage detection process enters the exit reminder stage.

[0092] In some embodiments, the control unit 104 is further configured to, during the process of the acquisition unit 102 acquiring the dirt and clogging status of the filter 40 of the vehicle exterior heat exchanger detected by the infrared detection device and recording it as the amount of dust on the filter 40 of the vehicle exterior heat exchanger, record the initially acquired amount of dust on the filter 40 of the vehicle exterior heat exchanger as the initial amount of dust on the filter 40 of the vehicle exterior heat exchanger; and record the currently acquired amount of dust on the filter 40 of the vehicle exterior heat exchanger as the current amount of dust on the filter 40 of the vehicle exterior heat exchanger. Specifically, as... Figure 7 As shown, in step 12, at the start of detection, the initial infrared detection value Li is recorded as the initial infrared detection value Lo. After detection begins, the currently detected infrared detection value Li is recorded as the current infrared detection value Ln.

[0093] The control unit 104 is further configured to, when the parking air conditioner is turned on and the control unit 104 is acquiring the operating parameters of the external fan, record the initially acquired operating parameters of the external fan as the initial operating parameters of the external fan; and record the currently acquired operating parameters of the external fan as the current operating parameters of the external fan during the operation of the external fan. The operating parameters of the external fan may be motor drive parameters of the external fan, such as PWM parameters.

[0094] Accordingly, the control unit 104, based on the cumulative operating time of the parking air conditioner, combined with the amount of dust on the filter 40 of the external heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the external fan, provides a reminder regarding the clogging status of the filter 40 of the external heat exchanger to determine if cleaning of the filter 40 is necessary. This includes any of the following situations that determine the clogging status of the filter 40 of the external heat exchanger: Figure 7 As shown, the reminder stage of the infrared dirt detection process in step 2 is specifically divided into four stages: namely, steps 21, 22, 23, and 24.

[0095] The first scenario for determining the clogging status of the filter 40 of the vehicle's external heat exchanger is as follows: Specifically, the control unit 104 is further configured to determine whether the absolute value of the difference between the current dust level and the initial dust level of the filter 40 of the vehicle's external heat exchanger is greater than or equal to a first set dust level, and whether the difference between the current operating parameters and the initial operating parameters of the external fan is greater than a set operating parameter, if the conditions are met, a reminder message regarding the clogging status of the filter 40 of the vehicle's external heat exchanger is issued. Here, the set operating time is, for example, C hours; the first set dust level is, for example, B; and the set operating parameters are, for example, A.

[0096] Specifically, such as Figure 7 As shown, in step 21, the first stage, the cumulative operating time of the parking air conditioner is T≤C. If T is less than 240h, when the change in the infrared detection value Li detected by the infrared sensor 20, that is, the change in dust on the filter 40 of the outdoor unit condenser 30 of the parking air conditioner |Ln-Lo|≥B, and the fan blockage warning condition is met at the same time, the display box (such as the display of the parking air conditioner) will light up to remind that the filter 40 of the outdoor unit condenser 30 of the parking air conditioner is blocked and needs to be cleaned; otherwise, if the above conditions are not met, the next stage (i.e., the second stage) will be entered.

[0097] The condition for alerting the fan to be dirty or clogged can be as follows: compare the current operating parameters of the outdoor fan of the parking air conditioner, such as the current value of the PWM sampling value, with the initial operating parameters of the outdoor fan of the parking air conditioner, such as the initial value of the PWM sampling value. If the difference between the two is greater than A, it is determined that the self-cleaning mode of the outdoor unit condenser 30 of the parking air conditioner needs to be entered.

[0098] The second scenario for determining the clogging status of the filter 40 of the vehicle's external heat exchanger: The control unit 104 is further configured to determine whether the absolute value of the difference between the current dust level and the initial dust level of the filter 40 of the vehicle's external heat exchanger is greater than or equal to a first set dust level, and whether the difference between the current operating parameters and the initial operating parameters of the external fan is greater than a set operating parameter, if the cumulative operating time of the parking air conditioner is greater than a set operating time but less than or equal to three times the set operating time, is satisfied. If satisfied, a reminder message regarding the clogging status of the filter 40 of the vehicle's external heat exchanger is issued to alert the user. Here, the set operating time is, for example, C hours; the first set dust level is, for example, B; and the set operating parameters are, for example, A.

[0099] Specifically, such as Figure 7 As shown, in step 22, the second stage, the cumulative operating time of the parking air conditioner is C < T ≤ 3C, such as 240h ≤ T < 720h: when the dust change in the filter 40 of the outdoor unit condenser 30 of the parking air conditioner |Ln-Lo| ≥ B, and the fan blockage warning condition is met simultaneously, the display box (such as the parking air conditioner's display) will light up to remind that the filter 40 of the outdoor unit condenser 30 of the parking air conditioner is blocked and needs to be cleaned. Otherwise, if the aforementioned conditions are not met, the process proceeds to the next stage (i.e., the third stage).

[0100] The third scenario for determining the clogging status of the filter 40 of the vehicle's external heat exchanger: The control unit 104 is further configured to determine whether the absolute value of the difference between the current dust level and the initial dust level of the filter 40 of the vehicle's external heat exchanger is greater than or equal to a first set dust level, or the difference between the current operating parameters and the initial operating parameters of the external fan is greater than a set operating parameter, if the cumulative operating time of the parking air conditioner is greater than three times the set operating time and less than or equal to five times the set operating time, is satisfied. If satisfied, a reminder message regarding the clogging status of the filter 40 of the vehicle's external heat exchanger is issued to alert the user. Here, the set operating time is, for example, C hours; the first set dust level is, for example, B; and the set operating parameters are, for example, A.

[0101] Specifically, such as Figure 7As shown, in step 23, the third stage, the cumulative operating time of the parking air conditioner is 3C < T ≤ 5C, such as 720h ≤ T < 1200h: when the dust change |Ln-Lo| ≥ B or the fan blockage warning condition is met, the display box (such as the parking air conditioner's display) will light up to remind that the filter 40 of the outdoor unit condenser 30 of the parking air conditioner is blocked and needs to be cleaned. Otherwise, if the aforementioned conditions are not met, the process proceeds to the next stage (i.e., the fourth stage).

[0102] The fourth scenario for determining the clogging status of the filter 40 of the vehicle's external heat exchanger: Specifically, the control unit 104 is further configured to issue a reminder message regarding the clogging status of the filter 40 of the external heat exchanger if the cumulative operating time of the parking air conditioner exceeds five times the set operating time. Here, the set operating time is, for example, C hours; the first set dust quantity is, for example, B; and the set operating parameters are, for example, A.

[0103] Specifically, such as Figure 7 As shown in step 24, the fourth stage, when the cumulative operating time of the parking air conditioner is 5C < T, such as 1200h ≤ T, the display box will light up, directly reminding the user that the outdoor unit condenser of the parking air conditioner needs to be cleaned 30.

[0104] In some embodiments, the control unit 104, based on the cumulative operating time of the parking air conditioner, combined with the amount of dust on the filter 40 of the external heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the external fan, provides a reminder regarding the clogging status of the filter 40 of the external heat exchanger to determine whether the filter 40 needs to be cleaned. This also includes:

[0105] In the first scenario of determining the clogging status of the filter 40 of the external heat exchanger, the control unit 104 is further configured to: if the cumulative operating time of the parking air conditioner equals a set operating time, and the absolute value of the difference between the current dust level and the initial dust level of the filter 40 of the external heat exchanger is less than a first set dust level, then: if the absolute value of the difference between the current dust level and the initial dust level of the filter 40 of the external heat exchanger is less than a second set dust level, the recorded current cumulative operating time of the parking air conditioner is reset to zero, and then the operating time of the parking air conditioner is re-accumulated to obtain a new cumulative operating time of the parking air conditioner, such as the new cumulative operating time T; the second set dust level is less than the first set dust level. The second set dust level is, for example, D.

[0106] Specifically, such as Figure 7As shown, in step 21, if the change in dust on the filter 40 of the outdoor unit condenser 30 of the parking air conditioner is |Ln-Lo| < B, and the cumulative operating time T of the parking air conditioner is T = C: if the change in dust on the filter 40 of the outdoor unit condenser 30 of the parking air conditioner is |Ln-Lo| < D, then the cumulative operating time T of the parking air conditioner is set to 0 (i.e., the cumulative operating time T of the parking air conditioner is reset to zero and the timer is restarted); otherwise, if the aforementioned conditions are not met, then the next stage (i.e., the second stage) is entered.

[0107] The control unit 104 is further configured to, after alerting the user to the clogging status of the filter 40 of the external heat exchanger, clean the filter 40 based on the amount of dust on the filter 40 and the internal pipe temperature of the parking air conditioner. The specific functions and processing of this control unit 104 are further described in step S130. Specifically, as... Figure 7 As shown, the self-cleaning control logic of the parking air conditioner outdoor unit condenser based on infrared sensors also includes: step 3, the logic of entering and exiting the reminder after the entire infrared dirt detection process.

[0108] In some embodiments, the control unit 104 is further configured to, during the recording of the current dust quantity of the filter 40 of the vehicle exterior heat exchanger, specifically, record the currently acquired dust quantity of the filter 40 of the vehicle exterior heat exchanger once at a set detection interval within a set time interval, and record it as the i-th dust quantity of the filter 40 of the vehicle exterior heat exchanger, where i is a positive integer; wherein, among the i-th dust quantity of the filter 40 of the vehicle exterior heat exchanger, the current i-th dust quantity of the filter 40 of the vehicle exterior heat exchanger is recorded as the current dust quantity of the filter 40 of the vehicle exterior heat exchanger. The detection interval is, for example, 1 minute.

[0109] Specifically, such as Figure 7 As shown, in step 12, after the initial infrared detection value Lo is detected, the infrared detection value Li is recorded every set interval (e.g., 30s) within a set time interval. For example, the infrared detection value L1 is detected in the first 30s, L2 in the second 30s, L3 in the third 30s, ..., Lm in the mth 30s, and Ln in the nth 30s, where m and n are both positive integers. The change in infrared detection value Li between two consecutive detections is ΔL, such as ΔL = Lm - Ln.

[0110] Accordingly, after alerting the control unit 104 about the clogging status of the filter 40 of the external heat exchanger, it cleans the clogging status of the filter 40 of the external heat exchanger based on the amount of dust on the filter 40 and the internal pipe temperature of the parking air conditioner. This includes any of the following scenarios for cleaning the clogging status of the filter 40 of the external heat exchanger:

[0111] The first scenario for clearing the filter 40 of the vehicle's external heat exchanger due to dirt clogging is as follows: Specifically, the control unit 104 is further configured to, when the internal pipe temperature of the parking air conditioner is greater than or equal to a set pipe temperature, determine that the external heat exchanger has been cleaned if, for a consecutive set number of times, the absolute value of the difference between the current dust amount and the previous dust amount of the filter 40 of the external heat exchanger is greater than or equal to a third set dust amount; and, if a reminder has already been given regarding the dirt clogging of the filter 40 of the external heat exchanger: the filter 40 of the external heat exchanger is cleaned. The system clears any warnings about dirt or blockage; it resets the recorded cumulative operating time of the parking air conditioner to zero, then re-accumulates the operating time to obtain a new cumulative operating time, denoted as T; it clears the recorded initial dust level of the filter 40 of the external heat exchanger, then records the newly acquired current dust level of the filter 40 as the new initial dust level; the third set dust level is less than the first set dust level and greater than or equal to the second set dust level. The third set dust level is, for example, E, and the set pipe temperature is, for example, 5°C.

[0112] Specifically, in step 3, the logic for entering and exiting the infrared dirt detection process includes: Step 31, comparing the current infrared sampling value every 1 minute with the previously saved sampling value. If the change (i.e., |Lm-Ln|) is ≥E twice consecutively, the outdoor unit condenser 30 of the parking air conditioner is considered clean. If the outdoor unit condenser 30 of the parking air conditioner is considered clean, and a previous alert has already been issued, the alert is cleared, and the cumulative operating time T is reset to zero. Afterwards, the initial infrared detection value Lo needs to be re-acquired, and the initial operating parameters of the outdoor fan also need to be re-acquired. In step 31, it is necessary to... 内管 Performed at ≥5℃.

[0113] The second scenario involves clearing the clogged filter 40 of the vehicle's external heat exchanger: Specifically, the control unit 104 is further configured to, when the internal pipe temperature of the parking air conditioner is greater than or equal to a set pipe temperature, if the cumulative operating time of the parking air conditioner is greater than or equal to a set operating time but no clogged filter 40 of the vehicle's external heat exchanger is detected, determine whether the current dust amount detected within a continuously set time is greater than or equal to the difference between the initial dust amount and the second set dust amount of the filter 40 of the vehicle's external heat exchanger, and less than or equal to the sum of the initial dust amount and the second set dust amount of the filter 40 of the vehicle's external heat exchanger. If this condition is met, it is determined that the external heat exchanger has been cleaned, and the recorded current cumulative operating time of the parking air conditioner is reset to zero. Then, the operating time of the parking air conditioner is re-accumulated to obtain a new cumulative operating time of the parking air conditioner, such as the new cumulative operating time T. The second set dust quantity is D, the set pipe temperature is 5°C, and the continuous set time is 30s.

[0114] Specifically, such as Figure 7 As shown, in step 3, the logic for the entire infrared dirt detection process, from entering the alert stage to exiting the alert stage, also includes: step 32, in T... 内管 When the temperature is ≥5℃, if the cumulative operating time T≥C and the reminder stage has not been entered, and simultaneously the following conditions are met: the initial infrared detection value Lo-D≤Li≤the initial infrared detection value Lo+D is detected for 30 consecutive seconds, then the outdoor unit condenser 30 of the parking air conditioner is considered to have been cleaned. Only the cumulative operating time T is reset to zero and recounted; the recorded initial infrared detection value Lo and the initial operating parameters of the outdoor fan are not cleared. Step 32 is the protection logic for exiting the dirt / clogging reminder.

[0115] The control unit 104 is further configured to, when it is determined that the filter 40 of the external heat exchanger needs to be cleaned, control the parking air conditioner to enter a preset self-cleaning mode based on the operating status of the indoor unit, so as to achieve self-cleaning of the filter 40 of the external heat exchanger. The specific functions and processing of this control unit 104 are further described in step S140. Specifically, as... Figure 7 As shown, the self-cleaning control logic of the outdoor unit condenser of the parking air conditioner based on the infrared sensor also includes: Step 4: When the cleaning conditions of the outdoor unit condenser 30 of the parking air conditioner are met, the system selects whether to enter the self-cleaning mode of the outdoor unit condenser 30 of the parking air conditioner based on the user's cleaning command or to automatically enter the self-cleaning mode of the outdoor unit condenser 30 of the parking air conditioner, depending on the operation of the indoor unit of the parking air conditioner.

[0116] The present invention proposes a device for implementing the self-cleaning control logic of a parking air conditioner outdoor unit based on an infrared sensor. This device uses an infrared sensor to detect the dust accumulation on the filter 40 of the outdoor unit condenser. When the dust accumulation on the filter 40 reaches a certain level, the device controls the parking air conditioner to enter a self-cleaning mode, causing the outdoor unit condenser to frost and remove dust, thus achieving the self-cleaning function. While the parking air conditioner is in self-cleaning mode and frosting and removing dust, the device ensures that the frosting area matches the dust accumulation on the filter 40, and that the frosting is sufficient and uniform, based on the dust accumulation detected by the infrared sensor. This results in a better cleaning effect for the outdoor unit condenser.

[0117] In some embodiments, when the control unit 104 determines that the filter 40 of the external heat exchanger needs to be cleaned, it controls the parking air conditioner to enter a preset self-cleaning mode based on the operating status of the indoor unit, thereby achieving self-cleaning of the filter 40 of the external heat exchanger, including:

[0118] The control unit 104 is further configured to determine whether the indoor unit is in an operating state or a non-operating state. The specific functions and processing of the control unit 104 are further described in step S210.

[0119] The control unit 104 is further configured to, if it is determined that the indoor unit is in operation, upon receiving a cleaning command initiated by the user, such as a cleaning command initiated by the user based on a reminder of the dirt clogging status of the filter 40 of the outdoor heat exchanger, control the parking air conditioner to enter a preset self-cleaning mode, so as to frost and remove dust from the outdoor heat exchanger filter 40 according to the current amount of dust, thereby achieving self-cleaning of the filter 40 of the outdoor heat exchanger. The specific functions and processing of this control unit 104 are further described in step S220.

[0120] The control unit 104 is further configured to, if it is determined that the indoor unit is in a non-operating state, control the parking air conditioner to enter a preset self-cleaning mode, so as to frost and remove dust from the outdoor heat exchanger based on the current dust level of the filter 40, thereby achieving self-cleaning of the filter 40. The specific functions and processing of this control unit 104 are further described in step S230.

[0121] Specifically, such as Figure 7As shown, the self-cleaning control logic for the outdoor unit condenser of the parking air conditioner based on infrared sensors further includes: In step 4, when the cleaning conditions for the outdoor unit condenser 30 of the parking air conditioner are met, if the indoor unit of the parking air conditioner is running, the user needs to select whether to enter the self-cleaning mode of the outdoor unit condenser 30 of the parking air conditioner via remote control; when the indoor unit is not running, self-cleaning will be performed automatically. During self-cleaning, the infrared sensor ensures that the frost area of ​​the outdoor unit condenser of the parking air conditioner is sufficiently uniform, thereby achieving a better cleaning effect for the outdoor unit condenser of the parking air conditioner.

[0122] In this invention, an infrared sensor is used to detect the dust accumulation on the filter of the outdoor unit condenser of the parking air conditioner. Based on the dust accumulation, the system determines whether to enter self-cleaning mode. When self-cleaning mode is activated, the infrared sensor ensures that the frost area on the outdoor unit condenser is sufficiently uniform, resulting in better cleaning. Thus, the infrared sensor can detect the dust accumulation on the filter of the outdoor unit condenser more promptly, and the self-cleaning control logic enables timely cleaning, ensuring the cooling and heating performance of the parking air conditioner.

[0123] Since the processing and functions implemented by the device in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0124] The technical solution of this invention involves installing an infrared sensor at the outdoor unit condenser of the parking air conditioner. This sensor detects the dust accumulation on the filter screen of the outdoor unit condenser and determines whether to enter the self-cleaning mode based on this dust accumulation. When the dust accumulation on the filter screen reaches a certain level, the parking air conditioner is controlled to enter the self-cleaning mode, causing the outdoor unit condenser to frost and remove dust, thus achieving a self-cleaning function. While the parking air conditioner is in self-cleaning mode and frosting and dust removal are being performed, the frosting area of ​​the outdoor unit condenser matches the dust accumulation on the filter screen, ensuring sufficient and uniform frosting to guarantee effective dust removal. This provides good user convenience and improves the heat exchange efficiency of the parking air conditioner.

[0125] According to an embodiment of the present invention, a parking air conditioner corresponding to the outdoor unit cleaning device of a parking air conditioner is also provided. This parking air conditioner may include the outdoor unit cleaning device of the parking air conditioner described above.

[0126] Since the processing and functions implemented by the parking air conditioner in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned device, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0127] The technical solution of this invention involves installing an infrared sensor at the outdoor unit condenser of a parking air conditioner. This sensor detects the dust accumulation on the filter of the outdoor unit condenser and determines whether to enter the self-cleaning mode based on this dust accumulation. When the dust accumulation on the filter reaches a certain level, the parking air conditioner is controlled to enter the self-cleaning mode, causing the outdoor unit condenser to frost and remove dust, thus achieving its self-cleaning function. While the parking air conditioner is in self-cleaning mode and frosting and dust removal are being performed, the frosting area of ​​the outdoor unit condenser matches the dust accumulation on the filter, ensuring sufficient and uniform frosting to guarantee effective dust removal and improve the user experience.

[0128] According to an embodiment of the present invention, a storage medium corresponding to a method for cleaning the outdoor unit of a parking air conditioner is also provided. The storage medium includes a stored program, wherein, when the program is executed, the device where the storage medium is located controls the execution of the above-described method for cleaning the outdoor unit of a parking air conditioner.

[0129] Since the processing and functions implemented by the storage medium in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0130] The technical solution of this invention involves installing an infrared sensor at the outdoor unit condenser of a parking air conditioner. This sensor detects the dust accumulation on the filter screen of the outdoor unit condenser and determines whether to enter the self-cleaning mode based on this dust accumulation. When the dust accumulation on the filter screen reaches a certain level, the parking air conditioner is controlled to enter the self-cleaning mode, causing the outdoor unit condenser to frost and remove dust, thus achieving its self-cleaning function. While the parking air conditioner is in self-cleaning mode and frosting and removing dust, the infrared sensor detects the dust accumulation on the filter screen to ensure that the frosting area matches the dust accumulation on the filter screen, and that the frosting is sufficient and uniform, guaranteeing effective frosting and dust removal and improving the heat exchange efficiency of the parking air conditioner.

[0131] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous methods can be freely combined and superimposed.

[0132] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A method for cleaning the outdoor unit of a parking air conditioner, characterized in that, The parking air conditioner has an indoor unit and an outdoor unit; the indoor unit has an in-vehicle heat exchanger; the outdoor unit has an external heat exchanger and an external fan; a filter screen is provided in a local area of ​​the external heat exchanger as a reference for determining the dust accumulation on the external heat exchanger; an infrared detection device is provided between the chassis (10) of the vehicle where the parking air conditioner is located and the filter screen of the external heat exchanger; the infrared detection device can detect the dust accumulation on the filter screen of the external heat exchanger by emitting infrared light to the filter screen and receiving the reflected light; the cleaning method of the outdoor unit of the parking air conditioner includes: The dust accumulation on the filter screen of the vehicle's external heat exchanger, detected by the infrared detection device, is recorded as the dust amount on the filter screen of the vehicle's external heat exchanger; the pipe temperature of the vehicle's internal heat exchanger is recorded as the internal pipe temperature of the parking air conditioner; after the parking air conditioner is turned on, the operating time of the parking air conditioner is accumulated to obtain the cumulative operating time of the parking air conditioner; and, when the parking air conditioner is running after being turned on, the operating parameters of the vehicle's external fan are obtained. Based on the cumulative operating time of the parking air conditioner, combined with the dust amount on the filter of the external heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the external fan, a reminder is issued regarding the clogging status of the external heat exchanger filter to determine if cleaning is necessary. The reminder is issued when the cumulative operating time of the parking air conditioner T≤3C, the dust change in the external heat exchanger filter |Ln-Lo|≥B, and the fan clogging warning conditions are simultaneously met; or when the cumulative operating time of the parking air conditioner 3C<T≤5C, and the external heat exchanger… The filter screen of the vehicle's external heat exchanger is alerted when the dust change amount |Ln-Lo| ≥ B or the fan clogging warning condition is met, or when the cumulative operating time of the parking air conditioner is 5C < T. The fan clogging warning condition is: the difference between the current operating parameters of the parking air conditioner's external fan and the initial value of the initial operating parameters of the parking air conditioner's external fan is greater than A; C represents the set operating time, B represents the first set dust amount, A represents the set operating parameters, Lo represents the first detected infrared detection value, and Ln represents the currently detected infrared detection value. After alerting the user to the dirt and clogging status of the filter screen of the external heat exchanger, the user then clears the alert based on the amount of dust on the filter screen and the internal pipe temperature of the parking air conditioner. If it is determined that the filter of the vehicle's external heat exchanger needs to be cleaned, the parking air conditioner is controlled to enter a preset self-cleaning mode according to the operating status of the indoor unit, so as to achieve self-cleaning of the filter of the vehicle's external heat exchanger.

2. The method for cleaning the outdoor unit of a parking air conditioner according to claim 1, characterized in that, in, The infrared detection device is specifically installed on the chassis (10) of the vehicle where the parking air conditioner is located, in the area where the flatness of the fin surface of the external heat exchanger reaches the set flatness range, and is located inside the filter screen of the external heat exchanger. After the infrared light emitting end of the infrared detection device emits infrared light, the angle range at which the infrared light reaches the filter screen of the vehicle's external heat exchanger is within a set angle range; and the distance between the infrared light emitting end of the infrared detection device and the filter screen of the vehicle's external heat exchanger is within a set distance range.

3. The method for cleaning the outdoor unit of a parking air conditioner according to claim 1, characterized in that, in, The amount of dust on the filter screen of the external heat exchanger initially obtained is recorded as the initial amount of dust on the filter screen of the external heat exchanger. The amount of dust on the filter screen of the external heat exchanger is recorded as the current amount of dust on the filter screen of the external heat exchanger. The initially obtained operating parameters of the vehicle exterior fan are recorded as the initial operating parameters of the vehicle exterior fan. The operating parameters of the external fan currently acquired during its operation are recorded as the current operating parameters of the external fan. Based on the cumulative operating time of the parking air conditioner, combined with the dust content of the filter of the external heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the external fan, the system alerts users to the clogging status of the filter of the external heat exchanger to determine when cleaning is necessary, including: If the cumulative operating time of the parking air conditioner is less than or equal to three times the set operating time, then determine whether the absolute value of the difference between the current dust amount of the filter screen of the vehicle's external heat exchanger and the initial dust amount of the filter screen of the vehicle's external heat exchanger is greater than or equal to the first set dust amount, and whether the difference between the current operating parameters of the vehicle's external fan and the initial operating parameters of the vehicle's external fan is greater than the set operating parameters: if these conditions are met, then issue a reminder message about the dirt and clogging status of the filter screen of the vehicle's external heat exchanger to remind the user of the dirt and clogging status of the filter screen of the vehicle's external heat exchanger. If the cumulative operating time of the parking air conditioner is greater than three times the set operating time and less than or equal to five times the set operating time, then it is determined whether the absolute value of the difference between the current dust amount of the filter screen of the vehicle exterior heat exchanger and the initial dust amount of the filter screen of the vehicle exterior heat exchanger is greater than or equal to the first set dust amount, or whether the difference between the current operating parameters of the vehicle exterior fan and the initial operating parameters of the vehicle exterior fan is greater than the set operating parameters. If the conditions are met, then a reminder message about the dirt and clogging of the filter screen of the vehicle exterior heat exchanger is issued to remind the user of the dirt and clogging of the filter screen of the vehicle exterior heat exchanger. If the cumulative operating time of the parking air conditioner exceeds five times the set operating time, a reminder message will be sent regarding the clogging of the filter screen of the external heat exchanger.

4. The method for cleaning the outdoor unit of a parking air conditioner according to claim 3, characterized in that, Based on the cumulative operating time of the parking air conditioner, combined with the amount of dust on the filter of the external heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the external fan, the system alerts users to the clogging status of the external heat exchanger filter to determine when cleaning is necessary. This also includes: If the cumulative operating time of the parking air conditioner is equal to the set operating time, and the absolute value of the difference between the current dust level of the filter of the external heat exchanger and the initial dust level of the filter of the external heat exchanger is less than the first set dust level, then: If the absolute value of the difference between the current dust level of the filter screen of the vehicle's external heat exchanger and the initial dust level of the filter screen of the vehicle's external heat exchanger is less than the second set dust level, the recorded cumulative operating time of the parking air conditioner is reset to zero. Then, the operating time of the parking air conditioner is re-accumulated to obtain a new cumulative operating time of the parking air conditioner; the second set dust level is less than the first set dust level.

5. The method for cleaning the outdoor unit of a parking air conditioner according to claim 1, characterized in that, in, Within a set time interval, the amount of dust on the filter screen of the vehicle's external heat exchanger is recorded once at a set detection interval, and is denoted as the i-th dust amount on the filter screen of the vehicle's external heat exchanger, where i is a positive integer; wherein, in the i-th dust amount on the filter screen of the vehicle's external heat exchanger, the current i-th dust amount on the filter screen of the vehicle's external heat exchanger is denoted as the current dust amount on the filter screen of the vehicle's external heat exchanger. After alerting the user to the clogged condition of the external heat exchanger filter, and considering the amount of dust on the filter and the internal pipe temperature of the parking air conditioner, the user proceeds to clear the clogged condition, including: If the internal pipe temperature of the parking air conditioner is greater than or equal to the set pipe temperature, and if the absolute value of the difference between the current dust amount of the filter screen of the vehicle's external heat exchanger and the previous dust amount of the filter screen of the vehicle's external heat exchanger is greater than or equal to the third set dust amount for a consecutive set number of times, then it is determined that the vehicle's external heat exchanger has been cleaned. Also, if a warning has been given regarding the clogging of the filter screen of the vehicle's external heat exchanger: The system reminds users to clean the filter screen of the external heat exchanger when it is clogged. The recorded cumulative operating time of the parking air conditioner is reset to zero, and then the operating time of the parking air conditioner is re-accumulated to obtain a new cumulative operating time of the parking air conditioner. The initial dust amount of the filter screen of the vehicle exterior heat exchanger that has been recorded is cleared. Then, the current dust amount of the filter screen of the vehicle exterior heat exchanger that is re-acquired is recorded as the new initial dust amount of the filter screen of the vehicle exterior heat exchanger. The third set dust amount is less than the first set dust amount and greater than or equal to the second set dust amount. If the internal pipe temperature of the parking air conditioner is greater than or equal to the set pipe temperature, and if the cumulative operating time of the parking air conditioner is greater than or equal to the set operating time but no warning is given regarding the clogging of the filter screen of the external heat exchanger, it is determined whether the current dust amount detected within a continuous set time is greater than or equal to the difference between the initial dust amount and the second set dust amount of the external heat exchanger filter, and less than or equal to the sum of the initial dust amount and the second set dust amount of the external heat exchanger filter. If this condition is met, it is determined that the external heat exchanger has been cleaned, and the recorded current cumulative operating time of the parking air conditioner is reset to zero. Then, the operating time of the parking air conditioner is re-accumulated to obtain a new cumulative operating time of the parking air conditioner.

6. The method for cleaning the outdoor unit of a parking air conditioner according to any one of claims 1 to 5, characterized in that, If it is determined that the filter of the vehicle's external heat exchanger needs to be cleaned, the parking air conditioner is controlled to enter a preset self-cleaning mode based on the operating status of the indoor unit, in order to achieve self-cleaning of the filter of the vehicle's external heat exchanger, including: Determine whether the indoor unit is in an operating state or an inactive state; If it is determined that the indoor unit is in operation, then upon receiving a cleaning command initiated by the user, the parking air conditioner is controlled to enter a preset self-cleaning mode, so as to frost and remove dust from the outdoor heat exchanger based on the current amount of dust on the filter screen of the outdoor heat exchanger, thereby achieving self-cleaning of the filter screen of the outdoor heat exchanger. If it is determined that the indoor unit is in a non-operational state, the parking air conditioner is controlled to enter a preset self-cleaning mode, so as to frost and remove dust from the outdoor heat exchanger based on the current amount of dust on the filter screen, thereby achieving self-cleaning of the filter screen of the outdoor heat exchanger.

7. A cleaning device for the outdoor unit of a parking air conditioner, characterized in that, The parking air conditioner has an indoor unit and an outdoor unit; the indoor unit has an in-vehicle heat exchanger; the outdoor unit has an out-of-vehicle heat exchanger and an out-of-vehicle fan. A filter screen is installed in a localized area of ​​the external heat exchanger to serve as a reference for determining the dust accumulation on the external heat exchanger; an infrared detection device is installed between the chassis (10) of the vehicle where the parking air conditioner is located and the filter screen of the external heat exchanger; the infrared detection device can detect the dust accumulation on the filter screen of the external heat exchanger by emitting infrared light to the filter screen and receiving the reflected light; the outdoor unit cleaning device of the parking air conditioner includes: The acquisition unit is configured to acquire the dust accumulation on the filter screen of the vehicle exterior heat exchanger detected by the infrared detection device, and record it as the dust amount on the filter screen of the vehicle exterior heat exchanger; acquire the pipe temperature of the vehicle interior heat exchanger, and record it as the internal pipe temperature of the parking air conditioner; after the parking air conditioner is turned on, accumulate the operating time of the parking air conditioner to obtain the cumulative operating time of the parking air conditioner; and, when the parking air conditioner is running after being turned on, acquire the operating parameters of the vehicle exterior fan. The control unit is configured to alert the user to the clogging status of the outdoor heat exchanger filter based on the cumulative operating time of the parking air conditioner, combined with the dust amount on the filter of the outdoor heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the outdoor fan, to determine whether the filter needs cleaning. The alert is triggered when the cumulative operating time of the parking air conditioner T≤3C, the dust change in the outdoor heat exchanger filter |Ln-Lo|≥B, and the fan clogging alert conditions are also met; or when the cumulative operating time of the parking air conditioner 3C<T≤5C, the... The filter of the vehicle's external heat exchanger is alerted when the change in dust level |Ln-Lo| is greater than or equal to B, or when the cumulative operating time of the parking air conditioner is less than T (5C < T). The alert condition for a clogged fan is that the difference between the current operating parameters of the parking air conditioner's external fan and the initial value of the initial operating parameters is greater than A. C represents the set operating time, B represents the first set dust level, A represents the set operating parameters, Lo represents the first detected infrared value, and Ln represents the currently detected infrared value. The control unit is further configured to, after alerting the user to the dirt and clogging status of the filter screen of the external heat exchanger, clear the alert based on the amount of dust on the filter screen of the external heat exchanger and the internal pipe temperature of the parking air conditioner. The control unit is further configured to, when it is determined that the filter of the external heat exchanger needs to be cleaned, control the parking air conditioner to enter a preset self-cleaning mode according to the operating status of the indoor unit, so as to achieve self-cleaning of the filter of the external heat exchanger.

8. The outdoor unit cleaning device for a parking air conditioner according to claim 7, characterized in that, in, The infrared detection device is specifically installed on the chassis (10) of the vehicle where the parking air conditioner is located, in the area where the flatness of the fin surface of the external heat exchanger reaches the set flatness range, and is located inside the filter screen of the external heat exchanger. After the infrared light emitting end of the infrared detection device emits infrared light, the angle range at which the infrared light reaches the filter screen of the vehicle's external heat exchanger is within a set angle range; and the distance between the infrared light emitting end of the infrared detection device and the filter screen of the vehicle's external heat exchanger is within a set distance range.

9. The outdoor unit cleaning device for a parking air conditioner according to claim 7, characterized in that, in, The control unit is further configured to record the amount of dust on the filter screen of the external heat exchanger as the initial amount of dust on the filter screen of the external heat exchanger; and to record the amount of dust on the filter screen of the external heat exchanger as the current amount of dust on the filter screen of the external heat exchanger. The control unit is further configured to record the initially acquired operating parameters of the external wind turbine as the initial operating parameters of the external wind turbine. The operating parameters of the external fan currently acquired during its operation are recorded as the current operating parameters of the external fan. The control unit, based on the cumulative operating time of the parking air conditioner, combined with the amount of dust on the filter of the external heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the external fan, provides a reminder regarding the clogging status of the filter of the external heat exchanger to determine whether cleaning of the filter is necessary, including: If the cumulative operating time of the parking air conditioner is less than or equal to three times the set operating time, then determine whether the absolute value of the difference between the current dust amount of the filter screen of the vehicle's external heat exchanger and the initial dust amount of the filter screen of the vehicle's external heat exchanger is greater than or equal to the first set dust amount, and whether the difference between the current operating parameters of the vehicle's external fan and the initial operating parameters of the vehicle's external fan is greater than the set operating parameters: if these conditions are met, then issue a reminder message about the dirt and clogging status of the filter screen of the vehicle's external heat exchanger to remind the user of the dirt and clogging status of the filter screen of the vehicle's external heat exchanger. If the cumulative operating time of the parking air conditioner is greater than three times the set operating time and less than or equal to five times the set operating time, then it is determined whether the absolute value of the difference between the current dust amount of the filter screen of the vehicle exterior heat exchanger and the initial dust amount of the filter screen of the vehicle exterior heat exchanger is greater than or equal to the first set dust amount, or whether the difference between the current operating parameters of the vehicle exterior fan and the initial operating parameters of the vehicle exterior fan is greater than the set operating parameters. If the conditions are met, then a reminder message about the dirt and clogging of the filter screen of the vehicle exterior heat exchanger is issued to remind the user of the dirt and clogging of the filter screen of the vehicle exterior heat exchanger. If the cumulative operating time of the parking air conditioner exceeds five times the set operating time, a reminder message will be sent regarding the clogging of the filter screen of the external heat exchanger.

10. The outdoor unit cleaning device for a parking air conditioner according to claim 9, characterized in that, The control unit, based on the cumulative operating time of the parking air conditioner, combined with the amount of dust on the filter of the external heat exchanger, the internal pipe temperature of the parking air conditioner, and the operating parameters of the external fan, provides a reminder regarding the clogging status of the filter of the external heat exchanger to determine if cleaning of the filter is necessary. It also includes: If the cumulative operating time of the parking air conditioner is equal to the set operating time, and the absolute value of the difference between the current dust level of the filter of the external heat exchanger and the initial dust level of the filter of the external heat exchanger is less than the first set dust level, then: If the absolute value of the difference between the current dust level of the filter screen of the vehicle's external heat exchanger and the initial dust level of the filter screen of the vehicle's external heat exchanger is less than the second set dust level, the recorded cumulative operating time of the parking air conditioner is reset to zero. Then, the operating time of the parking air conditioner is re-accumulated to obtain a new cumulative operating time of the parking air conditioner; the second set dust level is less than the first set dust level.

11. The outdoor unit cleaning device for a parking air conditioner according to claim 7, characterized in that, in, The control unit is further configured to record the amount of dust on the filter screen of the vehicle exterior heat exchanger at a set detection interval within a set time interval, and record it as the i-th dust amount on the filter screen of the vehicle exterior heat exchanger, where i is a positive integer; wherein, in the i-th dust amount on the filter screen of the vehicle exterior heat exchanger, the current i-th dust amount on the filter screen of the vehicle exterior heat exchanger is recorded as the current dust amount on the filter screen of the vehicle exterior heat exchanger. After alerting the control unit to the clogging of the filter of the external heat exchanger, the control unit, based on the amount of dust on the filter and the internal pipe temperature of the parking air conditioner, clears the clogging alert, including: If the internal pipe temperature of the parking air conditioner is greater than or equal to the set pipe temperature, and if the absolute value of the difference between the current dust amount of the filter screen of the vehicle's external heat exchanger and the previous dust amount of the filter screen of the vehicle's external heat exchanger is greater than or equal to the third set dust amount for a consecutive set number of times, then it is determined that the vehicle's external heat exchanger has been cleaned. Also, if a warning has been given regarding the clogging of the filter screen of the vehicle's external heat exchanger: The system reminds users to clean the filter screen of the external heat exchanger when it is clogged. The recorded cumulative operating time of the parking air conditioner is reset to zero, and then the operating time of the parking air conditioner is re-accumulated to obtain a new cumulative operating time of the parking air conditioner. The initial dust amount of the filter screen of the vehicle exterior heat exchanger that has been recorded is cleared. Then, the current dust amount of the filter screen of the vehicle exterior heat exchanger that is re-acquired is recorded as the new initial dust amount of the filter screen of the vehicle exterior heat exchanger. The third set dust amount is less than the first set dust amount and greater than or equal to the second set dust amount. If the internal pipe temperature of the parking air conditioner is greater than or equal to the set pipe temperature, and if the cumulative operating time of the parking air conditioner is greater than or equal to the set operating time but no warning is given regarding the clogging of the filter screen of the external heat exchanger, it is determined whether the current dust amount detected within a continuous set time is greater than or equal to the difference between the initial dust amount and the second set dust amount of the external heat exchanger filter, and less than or equal to the sum of the initial dust amount and the second set dust amount of the external heat exchanger filter. If this condition is met, it is determined that the external heat exchanger has been cleaned, and the recorded current cumulative operating time of the parking air conditioner is reset to zero. Then, the operating time of the parking air conditioner is re-accumulated to obtain a new cumulative operating time of the parking air conditioner.

12. The outdoor unit cleaning device for a parking air conditioner according to any one of claims 7 to 11, characterized in that, When the control unit determines that the filter of the external heat exchanger needs to be cleaned, it controls the parking air conditioner to enter a preset self-cleaning mode based on the operating status of the indoor unit, thereby achieving self-cleaning of the filter of the external heat exchanger, including: Determine whether the indoor unit is in an operating state or an inactive state; If it is determined that the indoor unit is in operation, then upon receiving a cleaning command initiated by the user, the parking air conditioner is controlled to enter a preset self-cleaning mode, so as to frost and remove dust from the outdoor heat exchanger based on the current amount of dust on the filter screen of the outdoor heat exchanger, thereby achieving self-cleaning of the filter screen of the outdoor heat exchanger. If it is determined that the indoor unit is in a non-operational state, the parking air conditioner is controlled to enter a preset self-cleaning mode, so as to frost and remove dust from the outdoor heat exchanger based on the current amount of dust on the filter screen, thereby achieving self-cleaning of the filter screen of the outdoor heat exchanger.

13. A parking air conditioner, characterized in that, include: The outdoor unit cleaning device for a parking air conditioner as described in any one of claims 7 to 12.

14. A storage medium, characterized in that, The storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the storage medium to perform the outdoor unit cleaning method of any one of claims 1 to 6.

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