Air volume test method and device of air conditioner, electronic equipment and storage medium

Abstract

The application provides an air volume test method and device of an air conditioner, an electronic device and a storage medium. The method comprises the following steps: in an inner circulation auxiliary air supply working condition, collecting a first air supply volume of an auxiliary ventilation device and a first vehicle interior static pressure corresponding to the first air supply volume; in an outer circulation auxiliary air supply working condition, collecting a second air supply volume of the auxiliary ventilation device and a second vehicle interior static pressure corresponding to the second air supply volume, and collecting an auxiliary air supply filter core pressure loss of an outer circulation flow channel; in a running working condition, collecting a test filter core pressure loss based on a damper structure of an inner and outer circulation damper; and determining a target air volume corresponding to a to-be-tested running mode according to the first air supply volume, the first vehicle interior static pressure, the second air supply volume, the second vehicle interior static pressure, the damper structure, the to-be-tested running mode, the auxiliary air supply filter core pressure loss and the test filter core pressure loss. The method is used to improve the accuracy of air volume test.

Description

Technical Field

[0001] This application relates to the field of vehicle air conditioning testing, and more particularly to a method, apparatus, electronic device, and storage medium for testing the airflow of an air conditioner. Background Technology

[0002] The energy consumption of a vehicle's air conditioning system has a significant impact on its range. The airflow of the air conditioning system is directly related to its energy consumption. Accurately measuring the airflow of the air conditioning system in different modes is key to optimizing its energy consumption.

[0003] In related technologies, air conditioning air volume is tested through bench testing. This method requires the construction of a dedicated test platform to connect the air conditioner, air supply box, pitot tube and other equipment. It is impossible to test the air volume on the whole vehicle, which causes the test results to deviate from the actual operating state and the accuracy of the air volume test is low. Summary of the Invention

[0004] The airflow testing method, apparatus, electronic device, and storage medium provided in this application are intended to improve the accuracy of airflow testing.

[0005] In a first aspect, embodiments of this application provide a method for testing the airflow of an air conditioner, comprising:

[0006] Under the internal circulation auxiliary air supply mode, the first air volume of the auxiliary ventilation equipment and the first static pressure inside the vehicle corresponding to the first air volume are collected; the internal circulation auxiliary air supply mode is the condition in which the whole vehicle is sealed, the air conditioning mode is the internal circulation mode, the air conditioning blower is turned off, and air is supplied from inside the vehicle to outside the vehicle through the auxiliary ventilation equipment.

[0007] In the external circulation auxiliary air supply mode, the second air volume of the auxiliary ventilation equipment and the second in-vehicle static pressure corresponding to the second air volume are collected, and the pressure loss of the auxiliary air supply filter element in the external circulation channel is also collected; the external circulation auxiliary air supply mode is the mode of switching the air conditioning mode of the internal circulation auxiliary air supply mode to the external circulation mode.

[0008] Under operating conditions, filter element pressure loss is collected and tested based on the damper structure of the internal and external circulation dampers; the operating conditions are when the entire vehicle is sealed, auxiliary ventilation equipment is removed, and the blower is turned on.

[0009] Based on the first air supply volume, the first vehicle interior static pressure, the second air supply volume, the second vehicle interior static pressure, the damper structure, the operating mode to be tested, the pressure loss of the auxiliary air supply filter element, and the pressure loss of the test filter element, determine the target air volume corresponding to the operating mode to be tested.

[0010] In some embodiments, the target airflow corresponding to the operating mode under test is determined based on the first airflow volume, the first in-vehicle static pressure, the second airflow volume, the second in-vehicle static pressure, the damper structure, the operating mode under test, the pressure drop of the auxiliary air supply filter, and the pressure drop of the test filter, including:

[0011] A leakage rate fitting function is constructed based on the first air supply volume and the first in-vehicle static pressure.

[0012] A hybrid air volume fitting function is constructed based on the second air supply volume and the second in-vehicle static pressure.

[0013] The external air volume entering the vehicle through the external air volume damper is obtained by solving the air leakage fitting function and the mixed air volume fitting function.

[0014] Based on the external circulation air volume and the pressure loss of the auxiliary air supply filter, a target fitting function is constructed according to the damper structure and the operating mode to be tested. Then, the target air volume corresponding to the operating mode to be tested is determined according to the pressure loss of the test filter and the target fitting function.

[0015] In some embodiments, when the damper structure is a double damper and the operating mode to be tested is a semi-internal and external circulation mode, the filter element pressure loss test includes the first external circulation test filter element pressure loss and the first internal circulation test filter element pressure loss.

[0016] Based on the external circulation air volume and the pressure drop of the auxiliary air supply filter, and according to the damper structure and the operating mode to be tested, a target fitting function is constructed. Then, based on the test filter pressure drop and the target fitting function, the target air volume corresponding to the operating mode to be tested is determined, including:

[0017] When the damper structure is a double damper and the test operation mode is a semi-internal and external circulation mode, the target fitting function of external circulation is constructed based on the external circulation air volume and the pressure loss of the auxiliary air supply filter.

[0018] Based on the area ratio of the external circulation filter element and the target fitting function of the external circulation, a target fitting function for the internal circulation is constructed.

[0019] Based on the pressure loss of the first external circulation test filter element, the pressure loss of the first internal circulation test filter element, the target fitting function of the external circulation, and the target fitting function of the internal circulation, the target air volume corresponding to the semi-internal and external circulation mode is determined.

[0020] In some embodiments, the target air volume corresponding to the semi-internal / external circulation mode is determined based on the pressure drop of the first external circulation test filter element, the pressure drop of the first internal circulation test filter element, the target fitting function of the external circulation, and the target fitting function of the internal circulation, including:

[0021] Substitute the pressure loss of the first external circulation test filter element into the external circulation target fitting function to obtain the first air volume;

[0022] Substitute the pressure loss of the first internal circulation test filter element into the internal circulation target fitting function to obtain the second air volume;

[0023] The sum of the first and second air volumes is used as the target air volume for the semi-internal / external circulation mode.

[0024] In some embodiments, based on the external circulation air volume and the pressure drop of the auxiliary air supply filter, a target fitting function is constructed according to the damper structure and the operating mode to be tested. The target air volume corresponding to the operating mode to be tested is then determined based on the test filter pressure drop and the target fitting function, including:

[0025] When the damper structure is a double damper and the test operation mode is a full external circulation mode, the external circulation target fitting function is constructed based on the external circulation air volume and the pressure loss of the auxiliary air supply filter.

[0026] Based on the pressure loss of the filter element in the second external circulation test and the target fitting function of the external circulation, the target air volume corresponding to the full external circulation mode is determined.

[0027] In some embodiments, based on the external circulation air volume and the pressure drop of the auxiliary air supply filter, a target fitting function is constructed according to the damper structure and the operating mode to be tested. The target air volume corresponding to the operating mode to be tested is then determined based on the test filter pressure drop and the target fitting function, including:

[0028] When the damper structure is a double damper and the test operation mode is a full internal circulation mode, the target fitting function of external circulation is constructed based on the external circulation air volume and the pressure loss of the auxiliary air supply filter.

[0029] Based on the area ratio of the external circulation filter element and the target fitting function of the external circulation, a target fitting function for the internal circulation is constructed.

[0030] Based on the filter pressure loss of the second internal circulation test and the internal circulation target fitting function, the target air volume corresponding to the full internal circulation mode is determined.

[0031] In some embodiments, based on the external circulation air volume and the pressure drop of the auxiliary air supply filter, a target fitting function is constructed according to the damper structure and the operating mode to be tested. The target air volume corresponding to the operating mode to be tested is then determined based on the test filter pressure drop and the target fitting function, including:

[0032] When the damper structure is a single damper, an external circulation target fitting function is constructed based on the external circulation air volume and the pressure loss of the auxiliary air supply filter.

[0033] Based on the external circulation target fitting function and the single damper test filter pressure loss corresponding to the test operation mode, the target air volume corresponding to the test operation mode is determined.

[0034] In some embodiments, based on the damper structure of the internal and external circulation dampers, the pressure drop of the test filter element corresponding to the operating mode under test is collected, including:

[0035] When the damper structure of the internal and external circulation damper is a double damper, if the operating mode to be tested is a semi-internal and external circulation mode, the pressure loss of the first external circulation test filter element corresponding to the external circulation channel and the pressure loss of the first internal circulation test filter element corresponding to the internal circulation channel are collected.

[0036] If the operating mode to be tested is the full external circulation mode, then the pressure loss of the second external circulation test filter element corresponding to the external circulation channel is collected;

[0037] If the operating mode to be tested is the full internal circulation mode, then the pressure loss of the second internal circulation test filter element corresponding to the internal circulation channel is collected.

[0038] In some embodiments, based on the damper structure of the internal and external circulation dampers, the pressure drop of the test filter element corresponding to the operating mode under test is collected, including:

[0039] When the damper structure of the internal and external circulation damper is a single damper, the pressure loss of the filter element is collected under the test operation mode.

[0040] Secondly, embodiments of this application provide an airflow testing device for an air conditioner, comprising:

[0041] The first auxiliary air supply test module is used to collect the first air volume of the auxiliary ventilation equipment and the first in-vehicle static pressure corresponding to the first air volume under the internal circulation auxiliary air supply condition. The internal circulation auxiliary air supply condition is a condition in which the whole vehicle is sealed, the air conditioning mode is internal circulation mode, the air conditioning blower is turned off, and air is supplied from inside the vehicle to outside the vehicle through the auxiliary ventilation equipment.

[0042] The second auxiliary air supply test module is used to collect the second air supply volume of the auxiliary ventilation equipment and the second in-vehicle static pressure corresponding to the second air supply volume under the external circulation auxiliary air supply condition, and to collect the pressure loss of the auxiliary air supply filter element in the external circulation channel; the external circulation auxiliary air supply condition is the condition of switching the air conditioning mode of the internal circulation auxiliary air supply condition to the external circulation mode.

[0043] The test module is used to collect and test filter element pressure loss under operating conditions, based on the damper structure of the internal and external circulation dampers. The operating conditions are: the entire vehicle is sealed, auxiliary ventilation equipment is removed, and the blower is turned on.

[0044] The air volume determination module is used to determine the target air volume corresponding to the operating mode under test based on the first air supply volume, the first static pressure inside the vehicle, the second air supply volume, the second static pressure inside the vehicle, the damper structure, the operating mode under test, the pressure loss of the auxiliary air supply filter element, and the pressure loss of the test filter element.

[0045] Thirdly, embodiments of this application provide an electronic device, including: a memory and a processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory, causing the processor to perform the first aspect and / or various possible implementations of the first aspect as described above.

[0046] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the first aspect and / or various possible implementations of the first aspect.

[0047] Fifthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the first aspect and / or various possible implementations of the first aspect.

[0048] The airflow testing method, apparatus, electronic equipment, and storage medium provided in this application embodiment collect the first airflow of the auxiliary ventilation equipment and the corresponding first vehicle interior static pressure under internal circulation auxiliary air supply conditions; and collect the second airflow of the auxiliary ventilation equipment, the corresponding second vehicle interior static pressure, and the pressure loss of the auxiliary air supply filter element under external circulation auxiliary air supply conditions. Under operating conditions, the pressure loss of the test filter element is collected based on the damper structure of the internal and external circulation dampers and the operating mode to be tested. Based on the first airflow, the first vehicle interior static pressure, the second airflow, the second vehicle interior static pressure, and the pressure loss of the auxiliary air supply filter element, a mapping relationship between pressure and airflow is constructed between the damper structure and the operating mode to be tested. Then, based on the pressure loss of the test filter element, the target airflow corresponding to the operating mode to be tested is determined. Compared with bench testing, the airflow test in this application embodiment is conducted on the basis of the actual flow channel and actual damper structure of the whole vehicle, so that the target airflow obtained by the test is consistent with the actual operating state of the whole vehicle, thus improving the accuracy of airflow testing. Attached Figure Description

[0049] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0050] Figure 1 Flowchart of the airflow testing method for the air conditioner provided in this application Figure One ;

[0051] Figure 2 A schematic diagram illustrating the application scenario of the airflow testing method for the air conditioner provided in this application;

[0052] Figure 3 Schematic diagram of the air conditioner with double damper structure provided in this application Figure One ;

[0053] Figure 4 Schematic diagram of the air conditioner with double damper structure provided in this application Figure Two ;

[0054] Figure 5 Schematic diagram of the air conditioner with double damper structure provided in this application Figure Three ;

[0055] Figure 6 A schematic diagram of a single-door air conditioning system provided in this application. Figure One ;

[0056] Figure 7 A schematic diagram of a single-door air conditioning system provided in this application. Figure Two ;

[0057] Figure 8 Flowchart of the airflow testing method for the air conditioner provided in this application Figure Two ;

[0058] Figure 9 A schematic diagram of the air volume testing device for the air conditioner provided in this application;

[0059] Figure 10 A schematic diagram of the structure of the electronic device provided in this application.

[0060] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0061] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0062] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0063] Figure 1 Flowchart of the airflow testing method for the air conditioner provided in this application Figure One ,like Figure 1 As shown, the airflow test method for air conditioners includes:

[0064] S101. Under the condition of internal circulation auxiliary air supply, the first air volume of the auxiliary ventilation equipment and the first static pressure inside the vehicle corresponding to the first air volume are collected; the condition of internal circulation auxiliary air supply is that the whole vehicle is sealed, the air conditioning mode is internal circulation mode, the air conditioning blower is turned off, and air is supplied from inside the vehicle to outside the vehicle through the auxiliary ventilation equipment.

[0065] Among them, "vehicle sealing" means that all doors, windows, and sunroofs are closed and any air leaks are sealed; "air conditioning mode" means that the internal circulation channel is open while the external circulation channel is closed; "air conditioning blower" means that the static pressure change inside the vehicle is only affected by the auxiliary ventilation equipment; "auxiliary ventilation equipment" is not a device included in the vehicle itself, but an external device.

[0066] Among them, the first air supply volume is the air supply volume of the auxiliary ventilation equipment under the internal circulation auxiliary air supply condition; the first vehicle interior static pressure is the vehicle interior pressure collected under the first air supply volume.

[0067] Specifically, refer to Figure 2 During the test, the auxiliary ventilation system was placed inside the vehicle, with its air supply duct extending outside through the window. The connection between the duct and the window was sealed to prevent air leakage. All doors and windows were closed to seal any leaks, ensuring the vehicle was sealed. The air conditioning was set to recirculation mode, the blower was turned off, and the auxiliary ventilation system was activated, supplying air from inside the vehicle to the outside. Under these conditions, outside air entered the vehicle through the airtight seal and exited through the windows, creating a negative pressure inside the vehicle during the auxiliary ventilation process.

[0068] During the air supply process of the auxiliary ventilation equipment, the first air volume supplied by the auxiliary ventilation equipment is collected. And collect the first air volume The corresponding first vehicle internal static pressure It should be noted that there are multiple first air supply volumes; adjusting the first air supply volume... To collect multiple first air supply volumes and the first vehicle interior static pressure corresponding to each of the multiple first air supply volumes.

[0069] In actual implementation, the internal pressure of the air supply duct is measured using the pressure testing unit integrated with the auxiliary ventilation equipment, and the air supply volume is calculated using Bernoulli's equation. The pressure gauges are positioned with the negative pressure side inside the vehicle and the positive pressure side outside, ensuring the locations of the pressure gauges are free from temperature and wind speed fluctuations. The initial air supply volume of the auxiliary ventilation equipment is then... At that time, the pressure gauge test result is the first air supply volume. The corresponding first vehicle internal static pressure .

[0070] It should be noted that the first air volume and the first static pressure inside the vehicle can reflect the air leakage characteristics of the whole vehicle and serve as the basis for subsequent air volume tests.

[0071] S102. Under the external circulation auxiliary air supply mode, collect the second air supply volume of the auxiliary ventilation equipment, as well as the second in-vehicle static pressure corresponding to the second air supply volume and the pressure loss of the auxiliary air supply filter element in the external circulation channel; the external circulation auxiliary air supply mode is the mode of switching the air conditioning mode from the internal circulation auxiliary air supply mode to the external circulation mode.

[0072] Among them, the external circulation auxiliary air supply mode is based on the internal circulation auxiliary air supply mode, but the internal circulation mode is switched to the external circulation mode; the external circulation auxiliary air supply mode is the condition in which the whole vehicle is sealed, the air conditioning mode is set to external circulation mode, the air conditioning blower is turned off, and air is supplied from inside the vehicle to outside the vehicle through auxiliary ventilation equipment.

[0073] The second air supply volume is the air supply volume of the auxiliary ventilation equipment under the external circulation auxiliary air supply condition; the second vehicle interior static pressure is the vehicle interior pressure collected under the second air supply volume.

[0074] Among them, the external circulation channel is the airflow path through which outside air enters the vehicle in external circulation mode; the auxiliary air supply filter pressure drop is the pressure difference between outside air entering the vehicle through the external circulation channel and before and after passing through the filter element. The auxiliary air supply filter pressure drop is used to characterize the resistance characteristics of airflow passing through the filter element.

[0075] Specifically, after completing data collection under the internal circulation auxiliary air supply mode, the air conditioning mode is switched to external circulation mode, entering the external circulation auxiliary air supply mode. Under the external circulation auxiliary air supply mode, the auxiliary ventilation equipment collects the second air volume during the air supply process. And collect the second air supply volume Corresponding second vehicle internal static pressure and auxiliary air supply filter pressure loss It should be noted that there are multiple secondary air supply volumes; adjusting the secondary air supply volume... To collect multiple secondary air volumes, and multiple secondary air volumes The corresponding static pressures inside the second vehicle and auxiliary air supply filter pressure loss .

[0076] In practice, the pressure loss of the auxiliary air supply filter element is obtained through a differential pressure gauge.

[0077] S103. Under operating conditions, based on the damper structure of the internal and external circulation dampers, the pressure loss of the test filter element corresponding to the operating mode to be tested is collected; the operating conditions are the condition of the whole vehicle being sealed, the auxiliary ventilation equipment being removed, and the blower being turned on.

[0078] Among them, the operating condition is when the auxiliary ventilation equipment is removed, the whole vehicle is sealed, the air conditioner blower is started, and the air conditioner is in actual working condition.

[0079] The internal and external circulation dampers are used to switch between the internal and external circulation airflow paths. The damper structure of the internal and external circulation dampers can be a single damper or a double damper. The operating mode to be tested is the operating mode of the air conditioner, such as the external circulation mode of the face blowing function, the internal circulation mode of the face blowing function, and the internal and external circulation mode of the foot blowing function. The filter element pressure loss test is the pressure difference on both sides of the filter element under the operating mode to be tested.

[0080] It should be noted that the damper structure is related to the operating mode under test. When the damper structure is a single damper, the operating mode under test for the face blowing (or foot blowing, or face blowing and foot blowing) function includes the external circulation mode and the internal circulation mode of the face blowing function. When the damper structure is a double damper, the operating mode under test for the face blowing (or foot blowing, or face blowing and foot blowing) function includes the external circulation mode, the internal circulation mode, and the semi-internal and external circulation mode of the face blowing function.

[0081] Specifically, after completing the data collection under the external circulation auxiliary air supply condition, the auxiliary ventilation equipment is removed and the entire vehicle is sealed. Based on the damper structure of the internal and external circulation dampers and the air conditioning function, multiple test operating modes are determined, and the air conditioning is controlled to operate under multiple test operating modes. In each test operating mode, the filter element pressure loss is collected and tested.

[0082] It should be noted that, under the actual working conditions of the air conditioner, the pressure loss of the test filter element in the test operating mode is collected according to the damper structure, so that the pressure loss of the test filter element corresponds to the damper structure and the test operating mode. This ensures that the subsequent air volume calculation is based on the actual operation of the whole vehicle and reduces the error caused by different damper structures.

[0083] S104. Based on the first air supply volume, the first vehicle interior static pressure, the second air supply volume, the second vehicle interior static pressure, the damper structure, the operating mode to be tested, the pressure loss of the auxiliary air supply filter element, and the pressure loss of the test filter element, determine the target air volume corresponding to the operating mode to be tested.

[0084] The target air volume is the actual air volume delivered by the air conditioner's blower under the tested operating mode.

[0085] Specifically, based on the first air supply volume and the first in-vehicle static pressure, a mapping relationship between air leakage volume and in-vehicle static pressure is constructed. Based on the second air supply volume and the second in-vehicle static pressure, a mapping relationship between mixed air volume and in-vehicle static pressure is constructed. Based on the constructed mapping relationship, and combined with the collected auxiliary air supply filter pressure loss, a fitting function corresponding to different damper structures and the test operation mode is constructed. Then, by testing the filter pressure loss and the fitting function, the target air volume corresponding to the test operation mode is determined.

[0086] The airflow testing method for air conditioners provided in this application embodiment collects the first airflow volume and the corresponding first in-vehicle static pressure of the auxiliary ventilation equipment under the internal circulation auxiliary air supply condition, and collects the second airflow volume, the corresponding second in-vehicle static pressure, and the pressure loss of the auxiliary air supply filter under the external circulation auxiliary air supply condition. Under the operating condition, the pressure loss of the test filter is collected based on the damper structure of the internal and external circulation dampers and the operating mode to be tested. Based on the first airflow volume, the first in-vehicle static pressure, the second airflow volume, the second in-vehicle static pressure, and the pressure loss of the auxiliary air supply filter, a mapping relationship between pressure and airflow is constructed between the damper structure and the operating mode to be tested. Then, based on the pressure loss of the test filter, the target airflow corresponding to the operating mode to be tested is determined. Compared with bench testing, this application embodiment performs airflow testing on the basis of the actual flow channel and actual damper structure of the whole vehicle, so that the target airflow obtained by the test is consistent with the actual operating state of the whole vehicle, thus improving the accuracy of airflow testing.

[0087] In some embodiments, based on the damper structure of the internal and external circulation dampers, the pressure drop of the test filter element corresponding to the operating mode under test is collected, including:

[0088] When the damper structure of the internal and external circulation damper is a double damper, if the operating mode to be tested is a semi-internal and external circulation mode, the pressure loss of the first external circulation test filter element corresponding to the external circulation channel and the pressure loss of the first internal circulation test filter element corresponding to the internal circulation channel are collected.

[0089] If the operating mode to be tested is the full external circulation mode, then the pressure loss of the second external circulation test filter element corresponding to the external circulation channel is collected;

[0090] If the operating mode to be tested is the full internal circulation mode, then the pressure loss of the second internal circulation test filter element corresponding to the internal circulation channel is collected.

[0091] Among them, such as Figure 3 As shown, when the damper structure of the internal and external circulation damper is a double damper, it includes an internal circulation damper 301 and an external circulation damper 302; Reference Figure 3 If the operating mode to be tested is a semi-internal / external circulation mode, that is, the external circulation damper 301 is open and the internal circulation damper 301 is not completely closed, the internal circulation will compensate for the external circulation air intake. Outside air will enter from the external circulation channel 304 and inside air will enter from the internal circulation channel 303. After passing through the filter element 305, they enter the vehicle through the air conditioning system 306.

[0092] like Figure 4 As shown, if the operating mode to be tested is the full external circulation mode, the external circulation damper 302 is open and the internal circulation damper 301 is completely closed. Outside air enters through the external circulation channel 304, then through the filter element 305, and then enters the vehicle through the air conditioning system 306.

[0093] like Figure 5As shown, if the operating mode to be tested is the full internal circulation mode, the external circulation damper 302 is closed and the internal circulation damper 301 is open. The air inside the vehicle enters through the internal circulation channel 303, then through the filter element 305, and finally through the air conditioning system 306 into the vehicle.

[0094] Specifically, the damper structure of the internal and external circulation damper is a double damper. When the test operating mode is a semi-internal and external circulation mode, outside air enters from the external circulation channel 304, and inside air enters from the internal circulation channel 303. After passing through the filter element, they enter the vehicle through the air conditioning system. The pressure difference of the airflow before and after passing through the filter element in the external circulation channel is collected to obtain the pressure drop of the first external circulation test filter element. The pressure difference of the airflow before and after passing through the filter element in the internal circulation channel is collected to obtain the pressure drop of the first internal circulation test filter element. .

[0095] The internal and external circulation air damper has a double damper structure. When the test operating mode is full external circulation mode, outside air enters from the external circulation channel, passes through the filter element, and then enters the vehicle through the air conditioning system. The pressure difference of the airflow before and after passing through the filter element in the external circulation channel is collected to obtain the pressure drop of the second external circulation test filter element. ;

[0096] The internal and external circulation air damper has a double damper structure. When the test operating mode is full internal circulation mode, the air inside the vehicle enters from the internal circulation channel, passes through the filter, and then enters the vehicle through the air conditioning system. The pressure difference of the airflow before and after passing through the filter in the internal circulation channel is collected to obtain the pressure drop of the second internal circulation test filter. .

[0097] In the above embodiments, the semi-internal and external circulation mode involves both external circulation channels and internal circulation channels. Therefore, after collecting the pressure loss on both sides, it can reflect the parallel ventilation status of the two channels. The full external circulation mode and the full internal circulation mode only need to collect the pressure loss of a single channel, so that the collected test filter pressure loss is consistent with the airflow path during actual operation, thereby improving the mode adaptability and result consistency of the vehicle air conditioning air volume test.

[0098] In some embodiments, based on the damper structure of the internal and external circulation dampers, the pressure drop of the test filter element corresponding to the operating mode under test is collected, including:

[0099] When the damper structure of the internal and external circulation damper is a single damper, the pressure loss of the filter element is collected under the test operation mode.

[0100] Among them, such as Figure 6 As shown, when the damper structure of the internal and external circulation damper is a single damper, the internal and external circulation is controlled by damper 401, as referenced. Figure 6If the operating mode to be tested is the external circulation mode, the damper 401 switches to the direction of the internal circulation channel 403, so that the internal circulation channel 403 is closed and the external circulation channel 404 is opened. Outside air enters from the external circulation channel 404, passes through the filter element 405, and enters the vehicle through the air conditioning system 406.

[0101] like Figure 7 As shown, if the operating mode to be tested is the internal circulation mode, the damper 401 switches to the direction of the external circulation channel 404, so that the external circulation channel 404 is closed and the internal circulation channel 403 is opened. The air inside the vehicle enters from the internal circulation channel 403, passes through the filter element 405, and then enters the vehicle through the air conditioning system 406.

[0102] Specifically, when the damper structure of the internal and external circulation damper is a single damper, regardless of whether the test operation mode is internal circulation mode or external circulation mode, all airflow enters from a single flow channel and enters the air conditioning system through the filter element. Therefore, in each test operation mode, the pressure difference of the airflow before and after passing through the filter element is collected to obtain the single damper test filter element pressure loss corresponding to the test operation mode.

[0103] In the above embodiments, for a single-door structure, the pressure loss of the single-door test filter element under the test operation mode is directly collected, so that the pressure loss of the single-door test filter element is consistent with the air conditioning operation state of the single-door structure, thereby improving the mode adaptability and result consistency of the vehicle air conditioning air volume test.

[0104] In one possible implementation, the target airflow corresponding to the operating mode under test is determined based on the first airflow volume, the first in-vehicle static pressure, the second airflow volume, the second in-vehicle static pressure, the damper structure, the operating mode to be tested, the pressure drop of the auxiliary air supply filter, and the pressure drop of the test filter, including:

[0105] A leakage rate fitting function is constructed based on the first air supply volume and the first in-vehicle static pressure.

[0106] A hybrid air volume fitting function is constructed based on the second air supply volume and the second in-vehicle static pressure.

[0107] The external air volume entering the vehicle through the external air volume damper is obtained by solving the air leakage fitting function and the mixed air volume fitting function.

[0108] Based on the external circulation air volume and the pressure loss of the auxiliary air supply filter, a target fitting function is constructed according to the damper structure and the operating mode to be tested. Then, the target air volume corresponding to the operating mode to be tested is determined according to the pressure loss of the test filter and the target fitting function.

[0109] In the internal circulation mode, the first air volume It is the air leakage caused by the air tightness problem of the whole vehicle. Therefore, the function constructed based on the first air supply volume and the corresponding first vehicle interior static pressure is called the air leakage fitting function.

[0110] In external circulation mode, the second air supply volume It is the sum of the air leakage caused by the air tightness of the whole vehicle and the air volume entering the vehicle through the external circulation channel. Therefore, the function constructed based on the second air supply volume and the corresponding second vehicle interior static pressure is called the air leakage fitting function.

[0111] Specifically, based on multiple first air volumes and the first in-vehicle static pressure corresponding to each of the multiple first air volumes, the first fitting coefficient is solved according to a preset fitting relationship; the preset fitting relationship is the fitting relationship between air volume and pressure, expressed as: Where Q represents air volume, P represents pressure, and S represents the fitting coefficient.

[0112] Based on multiple first air supply volumes, multiple first in-vehicle static pressures and first fitting coefficients, a quadratic leakage fitting function is constructed, as shown in formula (1);

[0113] Based on the multiple second air supply volumes and the second vehicle interior static pressures corresponding to the multiple second air supply volumes, the second fitting coefficients are solved according to the preset fitting relationship. Based on the multiple second air supply volumes, the multiple second vehicle interior static pressures, and the second fitting coefficients, a quadratic mixed air volume fitting function is constructed, as shown in formula (2).

[0114] Formula (1): ;

[0115] Formula (2): ;

[0116] in, It is the first air supply volume. It is the static pressure inside the first car. These are the first fitting coefficients; It is the second air supply volume. It is the static pressure inside the second car. It is the second fitting coefficient.

[0117] The second air supply volume is the sum of the air leakage volume and the air volume entering the vehicle through the external circulation channel, as shown in formula (3).

[0118] Formula (3): ;

[0119] That is, the first air supply volume and external air circulation volume The sum equals the second air supply volume .

[0120] Based on the collected multiple sets Multiple groups By combining formulas (1), (2), and (3), multiple external circulation air volumes can be calculated. Multiple external air circulation volumes With multiple secondary air supply volumes One-to-one correspondence.

[0121] Based on multiple secondary air supply volumes The corresponding external circulation air volume And the pressure loss of the auxiliary air supply filter element in the external circulation channel. Based on the damper structure and the operating mode to be tested, a target fitting function is constructed. The pressure loss of the test filter element is substituted into the target fitting function to obtain the target air volume corresponding to the operating mode to be tested.

[0122] In the above embodiments, a mapping relationship between air leakage and vehicle static pressure is established, as well as a mapping relationship between mixed air volume and vehicle static pressure. Then, the external circulation air volume is calculated in reverse. Based on the external circulation air volume and the pressure loss of the auxiliary air supply filter, a target fitting function corresponding to the damper structure and the operating mode under test is constructed. Then, the target air volume is determined based on the pressure loss of the test filter. This ensures that the target air volume corresponding to the operating mode under test can reflect the actual airflow conditions of the entire vehicle, reduce the impact of vehicle static pressure fluctuations and damper structure differences on the results, and improve the accuracy of air volume testing.

[0123] In some embodiments, when the damper structure is a double damper and the operating mode to be tested is a semi-internal and external circulation mode, the filter element pressure loss test includes the first external circulation test filter element pressure loss and the first internal circulation test filter element pressure loss.

[0124] Based on the external circulation air volume and the pressure drop of the auxiliary air supply filter, and according to the damper structure and the operating mode to be tested, a target fitting function is constructed. Then, based on the test filter pressure drop and the target fitting function, the target air volume corresponding to the operating mode to be tested is determined, including:

[0125] When the damper structure is a double damper and the test operation mode is a semi-internal and external circulation mode, the target fitting function of external circulation is constructed based on the external circulation air volume and the pressure loss of the auxiliary air supply filter.

[0126] Based on the area ratio of the external circulation filter element and the target fitting function of the external circulation, a target fitting function for the internal circulation is constructed.

[0127] Based on the pressure loss of the first external circulation test filter element, the pressure loss of the first internal circulation test filter element, the target fitting function of the external circulation, and the target fitting function of the internal circulation, the target air volume corresponding to the semi-internal and external circulation mode is determined.

[0128] When the damper structure is a double damper and the operating mode to be tested is a semi-internal and external circulation mode, the specific process of collecting the pressure loss of the first external circulation test filter element and the pressure loss of the first internal circulation test filter element can be referred to the description of the above embodiment.

[0129] The external circulation filter area ratio refers to the proportion of the filter area on one side of the external circulation channel to the total filter area.

[0130] It should be noted that the reference Figure 3 When the damper structure is a double damper, to prevent outside air from entering the air conditioning unit through the outside circulation channel 304 in the outside circulation mode, and then entering the passenger compartment through the inside circulation damper 301 and the inside circulation channel 303, causing a rapid deterioration of the air quality inside the vehicle and a reduction in the airflow from the air vents, the inside circulation damper 301, when open, forms a barrier together with the filter element 305. At the connection between the inside circulation damper 301 and the filter element 305, the filter element is divided into filter element 3051 and filter element 3052. Filter element 3051 is the filter element on the outside circulation channel side, and filter element 3052 is the filter element on the inside circulation channel side. The total area of ​​the filter element is K, the area of ​​filter element 3051 is k1, and the proportion of the outside circulation filter element area is: .

[0131] In practical applications, the area ratio of the external circulation filter element can be determined by collecting the pressure drop of the auxiliary air supply filter element under external circulation auxiliary air supply conditions. It can be obtained through synchronous measurement or preset.

[0132] Specifically, when the damper structure is a double damper and the operating mode under test is a semi-internal / external circulation mode, multiple external circulation air volumes are... As part of the preset fitting relationship, the air volume will be used to measure the pressure loss of multiple auxiliary air supply filters. As the pressure in the preset fitting relationship, the third fitting coefficient, i.e., the external circulation air volume, is calculated based on the preset fitting relationship. Auxiliary air supply filter element pressure loss and the third fitting coefficient It satisfies the mapping relationship shown in formula (4).

[0133] Formula (4): ;

[0134] According to the third fitting coefficient Constructing the outer loop target fitting function As shown in formula (5).

[0135] Formula (5): ;

[0136] According to the third fitting coefficient and the proportion of external circulation filter area Calculate the fourth fitting coefficient According to the fourth fitting coefficient Fitting function to the outer loop objective function Determine the target fitting function for the inner loop. As shown in formula (6).

[0137] Formula (6): .

[0138] It should be noted that, according to Ergun's equations, the pressure loss of porous media is determined by its equivalent particle diameter, porosity, thickness, area, and resistance coefficient. For the same filter element, the equivalent particle diameter, porosity, and thickness remain constant. Therefore, the pressure loss has a quadratic inverse relationship with the area, which is the ratio of the filter element area on the external circulation side to the total filter element area. and the outer loop objective fitting function The inner loop target fitting function can be derived. .

[0139] In the above embodiments, under the dual-door structure and semi-internal / external circulation mode, the mapping relationship of the external circulation path is first determined, and then expanded by combining the area ratio of the external circulation filter element to obtain the mapping relationship of the internal circulation path. Through the external circulation target fitting function and the internal circulation target fitting function, the actual airflow distribution state under the dual-door structure can be more accurately reflected. Then, based on the pressure loss of the first external circulation test filter element, the pressure loss of the first internal circulation test filter element, the external circulation target fitting function, and the internal circulation target fitting function, the target air volume is determined, which improves the consistency between the target air volume and the actual operating state of the vehicle.

[0140] In some embodiments, determining the target air volume corresponding to the semi-internal / external circulation mode based on the pressure loss of the first external circulation test filter element, the pressure loss of the first internal circulation test filter element, the target fitting function of the external circulation, and the target fitting function of the internal circulation includes: substituting the pressure loss of the first external circulation test filter element into the target fitting function of the external circulation to obtain the first air volume; substituting the pressure loss of the first internal circulation test filter element into the target fitting function of the internal circulation to obtain the second air volume; and using the sum of the first air volume and the second air volume as the target air volume corresponding to the semi-internal / external circulation mode.

[0141] Specifically, referring to formulas (5) and (6), let the outer loop target fitting function be... In This is equal to the pressure drop of the filter element in the first external circulation test. (Test the pressure drop of the first external circulation filter element) Substitution ),calculate The value of is used to obtain the first air volume; let the inner circulation target fitting function be... In This is equal to the pressure loss of the filter element in the first internal circulation test. (Test the pressure drop of the first internal circulation filter element) Substitution ),calculate The value of the first air volume is used to obtain the second air volume; the sum of the first and second air volumes is used as the target air volume corresponding to the semi-internal and external circulation mode.

[0142] In the above embodiment, the pressure loss of the test filter element on the external circulation side and the internal circulation side are respectively substituted into the corresponding target fitting function, and the two air volumes obtained are merged, so that the determination process of the target air volume directly corresponds to the dual-channel air supply characteristics in the semi-internal and external circulation mode, thereby making the target air volume consistent with the damper distribution state, improving the accuracy of the target air volume, and improving the consistency between the target air volume and the actual operating state of the vehicle.

[0143] In some embodiments, based on the external circulation air volume and the pressure drop of the auxiliary air supply filter, a target fitting function is constructed according to the damper structure and the operating mode to be tested. The target air volume corresponding to the operating mode to be tested is then determined based on the test filter pressure drop and the target fitting function. This includes: when the damper structure is a double damper and the operating mode to be tested is a full external circulation mode, constructing an external circulation target fitting function based on the external circulation air volume and the pressure drop of the auxiliary air supply filter; and determining the target air volume corresponding to the full external circulation mode based on the pressure drop of the second external circulation test filter and the external circulation target fitting function.

[0144] The process of constructing the outer loop objective fitting function can be referred to in the above embodiments.

[0145] Specifically, the outer loop target fitting function is obtained. Next, let the outer loop objective fitting function... In This is equal to the pressure drop of the filter element in the second external circulation test. (Test the pressure drop of the second external circulation filter element) Substitution ),calculate The value of is used to obtain the target air volume corresponding to the full external circulation mode.

[0146] It should be noted that when the test operating mode is the full external circulation mode, under the dual damper structure, the internal circulation channel is closed or maintains a minimum flow state. The pressure loss change of the external circulation channel mainly reflects the external circulation filter element and its flow channel resistance. Therefore, by substituting the pressure loss of the second external circulation test filter element into the external circulation target fitting function, the target air volume corresponding to the full external circulation mode can be calculated.

[0147] In the above embodiments, the target air volume corresponding to the full external circulation mode is determined by the pressure loss of the filter element tested by the second external circulation test and the target fitting function of the external circulation. This makes the determination of the target air volume consistent with the actual resistance state of the external circulation path, thereby improving the accuracy of the air volume test.

[0148] In some embodiments, based on the external circulation air volume and the pressure drop of the auxiliary air supply filter, a target fitting function is constructed according to the damper structure and the operating mode to be tested. The target air volume corresponding to the operating mode to be tested is then determined based on the test filter pressure drop and the target fitting function. This includes: when the damper structure is a double damper and the operating mode to be tested is a full internal circulation mode, constructing an external circulation target fitting function based on the external circulation air volume and the pressure drop of the auxiliary air supply filter; constructing an internal circulation target fitting function based on the external circulation filter area ratio and the external circulation target fitting function; and determining the target air volume corresponding to the full internal circulation mode based on the pressure drop of the second internal circulation test filter and the internal circulation target fitting function.

[0149] The process of constructing the external circulation target fitting function, and the process of constructing the internal circulation target fitting function based on the external circulation filter area ratio and the external circulation target fitting function, can be referred to the description in the above embodiments.

[0150] Specifically, the inner loop target fitting function is obtained. Next, let the inner loop target fitting function be... In This is equal to the pressure loss of the filter element in the second internal circulation test. (Test the pressure drop of the second internal circulation filter element) Substitution ),calculate The value of is used to obtain the target air volume corresponding to the full internal circulation mode.

[0151] It should be noted that in full internal circulation mode, the external circulation damper is closed and the internal circulation damper is open. The air conditioning unit only draws in air from the vehicle through the internal circulation channel. After collecting the pressure loss of the second internal circulation test filter, it is substituted into the internal circulation target fitting function to calculate the target air volume corresponding to the full internal circulation mode.

[0152] In the above embodiments, the mapping relationship of the external circulation path is first determined, and then expanded by combining the area ratio of the external circulation filter element to obtain the mapping relationship of the internal circulation path. Then, the target air volume is solved based on the pressure loss of the second internal circulation test filter element, so that the determination of the target air volume is consistent with the actual resistance state of the internal circulation path, thereby improving the accuracy of the air volume test.

[0153] In some embodiments, based on the external circulation air volume and the pressure drop of the auxiliary air supply filter, a target fitting function is constructed according to the damper structure and the operating mode to be tested. Then, based on the pressure drop of the test filter and the target fitting function, the target air volume corresponding to the operating mode to be tested is determined. This includes: when the damper structure is a single damper, constructing an external circulation target fitting function based on the external circulation air volume and the pressure drop of the auxiliary air supply filter; and determining the target air volume corresponding to the operating mode to be tested based on the external circulation target fitting function and the pressure drop of the single damper test filter corresponding to the operating mode to be tested.

[0154] It should be noted that when the air damper structure is a single damper, the airflow path of the vehicle's air conditioning is the same as that of a dual damper structure in either the full external circulation mode or the full internal circulation mode.

[0155] The specific process of constructing the external circulation target fitting function based on the external circulation air volume and the pressure drop of the auxiliary air supply filter element can be referred to the description in the above embodiment; the pressure drop of the single damper test filter element is obtained in the test operation mode, and for the single damper test filter element pressure drop collected in each test operation mode, the external circulation target fitting function is set... In This is equal to the pressure loss of the filter element in the single damper test (substituting the pressure loss of the filter element in the single damper test into the equation). ),calculate The value of is used to obtain the target air volume corresponding to the operating mode to be tested.

[0156] In the above embodiments, an external circulation target fitting function is constructed using the external circulation air volume and the pressure drop of the auxiliary air supply filter element. Based on the pressure drop of the single-door test filter element corresponding to the test operation mode, the target air volume corresponding to the test operation mode is obtained. This ensures that the determination of the target air volume is consistent with the airflow characteristics of the single-door structure, thereby improving the accuracy of the air volume test.

[0157] For example, such as Figure 8 As shown, the airflow test method for air conditioners includes:

[0158] S801. Under the condition of internal circulation auxiliary air supply, collect multiple sets of first air supply volume and corresponding first vehicle static pressure.

[0159] S802. Under the external circulation auxiliary air supply condition, collect multiple sets of second air supply volume, as well as the corresponding second vehicle interior static pressure and auxiliary air supply filter pressure loss.

[0160] S803. Determine the operating mode to be tested and the damper structure of the internal and external circulation dampers;

[0161] S804A. Under operating conditions, if the damper structure is a double damper and the operating mode to be tested is a semi-internal and external circulation mode, then the pressure loss of the first external circulation test filter element and the pressure loss of the first internal circulation test filter element are collected.

[0162] S805A: Based on multiple sets of first air supply volume and corresponding first vehicle interior static pressure, multiple sets of second air supply volume, and corresponding second vehicle interior static pressure and auxiliary air supply filter pressure loss, first external circulation test filter pressure loss and first internal circulation test filter pressure loss, the target air volume of the dual damper and semi-internal / external circulation mode is determined.

[0163] S804B. Under operating conditions, if the damper structure is a double damper and the operating mode to be tested is the full external circulation mode, then the pressure loss of the second external circulation test filter element will be collected.

[0164] S805B: Based on multiple sets of first air supply volume and corresponding first vehicle interior static pressure, multiple sets of second air supply volume, and corresponding second vehicle interior static pressure, auxiliary air supply filter pressure loss, and second external circulation test filter pressure loss, determine the target air volume for dual damper and full external circulation mode.

[0165] S804C. Under operating conditions, if the damper structure is a double damper and the operating mode to be tested is the full internal circulation mode, then the pressure loss of the filter element in the second internal circulation test will be collected.

[0166] S805C: Based on multiple sets of first air supply volume and corresponding first vehicle interior static pressure, multiple sets of second air supply volume, and corresponding second vehicle interior static pressure, auxiliary air supply filter pressure loss, and second internal circulation test filter pressure loss, determine the target air volume for dual damper and full internal circulation mode.

[0167] S804D. Under operating conditions, if the damper structure is a single damper, collect the pressure loss of the single damper test filter element under each test operating mode.

[0168] S805D determines the target air volume for a single damper and the test operating mode based on multiple sets of first air supply volumes and corresponding first vehicle interior static pressure, multiple sets of second air supply volumes, corresponding second vehicle interior static pressure, auxiliary air supply filter pressure loss, and single damper test filter pressure loss.

[0169] In a specific example, the damper structure is a single damper. The airflow testing method for the air conditioner includes testing the face blowing function and the internal / external circulation mode.

[0170] Five sets of data were collected under the condition of internal circulation auxiliary air supply. And construct a function to fit the air leakage rate;

[0171] Five sets of data were collected under the external circulation auxiliary air supply condition. And construct a hybrid air volume fitting function;

[0172] Based on the air leakage fitting function and the mixed air volume fitting function, and the mapping relationship: First air supply volume and external air circulation volume The sum equals the second air supply volume Five secondary air supply volumes were calculated. Corresponding external air circulation volume According to 5 groups By performing fitting, the outer loop target fitting function is obtained. .

[0173] With the air conditioner switched to face-blowing mode, and under different blower speeds and different internal / external circulation modes (including internal and external circulation modes), the pressure drop of the filter element at different single dampers was collected. The different pressure drops of the filter element at different single dampers were then substituted into the external circulation target fitting function. This allows us to obtain the target air volume under different blower speeds and different internal / external circulation modes.

[0174] In a specific example, the damper structure is a double damper. The airflow is tested for the foot blowing function and the internal / external circulation mode. The airflow testing method for the air conditioner includes:

[0175] Five sets of data were collected under the condition of internal circulation auxiliary air supply. And construct a function to fit the air leakage rate;

[0176] Five sets of data were collected under the external circulation auxiliary air supply condition. And construct a hybrid air volume fitting function;

[0177] Based on the air leakage fitting function and the mixed air volume fitting function, and the mapping relationship: First air supply volume and external air circulation volume The sum equals the second air supply volume Five secondary air supply volumes were calculated. Corresponding external air circulation volume According to 5 groups By performing fitting, the outer loop target fitting function is obtained. .

[0178] The area ratio of the external circulation filter element was measured. Based on the proportion of external circulation filter area Fitting function to the outer loop objective function Determine the target fitting function for the inner loop. .

[0179] Switch the air conditioner to foot blowing function and collect different filter pressure drops under different blower speeds and different internal and external circulation modes (including semi-internal and external circulation mode, internal circulation mode and external circulation mode).

[0180] For example, under different blower speeds and semi-internal / external circulation modes, the pressure drop of the filter element during the first external circulation test at different speeds was collected. And the first internal circulation test filter element pressure loss For each gear setting, test the pressure drop of the filter element in the first external circulation test for that gear setting. Substitution ,calculate The value is used to obtain the first air volume; the pressure drop of the first internal circulation test filter element is then measured. Substitution ,calculate The value is used to obtain the second air volume. The sum of the first and second air volumes is used as the target air volume for the foot blowing function and the semi-internal / external circulation mode at this level.

[0181] For example, under different blower speeds and full external circulation modes, the pressure drop of the filter element at different speeds during the second external circulation test was collected. For each gear setting, test the pressure drop of the filter element in the second external circulation test for that gear setting. Substitution ,calculate The value indicates the target airflow for the foot blowing function and full external circulation mode at that setting.

[0182] The airflow testing method for air conditioners provided in this application embodiment collects the first airflow volume and the corresponding first in-vehicle static pressure of the auxiliary ventilation equipment under the internal circulation auxiliary air supply condition, and collects the second airflow volume, the corresponding second in-vehicle static pressure, and the pressure loss of the auxiliary air supply filter under the external circulation auxiliary air supply condition. Under the operating condition, the pressure loss of the test filter is collected based on the damper structure of the internal and external circulation dampers and the operating mode to be tested. Based on the first airflow volume, the first in-vehicle static pressure, the second airflow volume, the second in-vehicle static pressure, and the pressure loss of the auxiliary air supply filter, a mapping relationship between pressure and airflow is constructed between the damper structure and the operating mode to be tested. Then, based on the pressure loss of the test filter, the target airflow corresponding to the operating mode to be tested is determined. Compared with bench testing, this application embodiment performs airflow testing on the basis of the actual flow channel and actual damper structure of the whole vehicle, so that the target airflow obtained by the test is consistent with the actual operating state of the whole vehicle, thus improving the accuracy of airflow testing.

[0183] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0184] Figure 9 A schematic diagram of the airflow testing device for the air conditioner provided in this application is shown below. Figure 9 As shown, the airflow testing device for an air conditioner provided in this embodiment includes:

[0185] The first auxiliary air supply test module 901 is used to collect the first air supply volume of the auxiliary ventilation equipment and the first vehicle static pressure corresponding to the first air supply volume under the internal circulation auxiliary air supply condition. The internal circulation auxiliary air supply condition is a condition in which the whole vehicle is sealed, the air conditioning mode is internal circulation mode, the air conditioning blower is turned off, and air is supplied from inside the vehicle to outside the vehicle through the auxiliary ventilation equipment.

[0186] The second auxiliary air supply test module 902 is used to collect the second air supply volume of the auxiliary ventilation equipment, as well as the second in-vehicle static pressure and the pressure loss of the auxiliary air supply filter element in the external circulation channel under the external circulation auxiliary air supply mode. The external circulation auxiliary air supply mode is the mode of switching the air conditioning mode from the internal circulation auxiliary air supply mode to the external circulation mode.

[0187] The test module 903 is used to collect the pressure loss of the test filter element corresponding to the test operating mode under operating conditions, based on the damper structure of the internal and external circulation dampers. The operating conditions are the condition of the whole vehicle being sealed, the auxiliary ventilation equipment being removed, and the blower being turned on.

[0188] The air volume determination module 904 is used to determine the target air volume corresponding to the test operation mode based on the first air supply volume, the first vehicle interior static pressure, the second air supply volume, the second vehicle interior static pressure, the damper structure, the test operation mode, the pressure loss of the auxiliary air supply filter element, and the pressure loss of the test filter element.

[0189] In some embodiments, the air volume determination module is used to construct a leakage volume fitting function based on a first air supply volume and a first in-vehicle static pressure; construct a mixed air volume fitting function based on a second air supply volume and a second in-vehicle static pressure; solve the leakage volume fitting function and the mixed air volume fitting function to obtain the external circulation air volume entering the vehicle through the external circulation damper; construct a target fitting function based on the external circulation air volume and the pressure loss of the auxiliary air supply filter element, according to the damper structure and the operating mode to be tested, and determine the target air volume corresponding to the operating mode to be tested based on the pressure loss of the test filter element and the target fitting function.

[0190] In some embodiments, when the damper structure is a double damper and the operating mode to be tested is a semi-internal and external circulation mode, the filter element pressure loss test includes the first external circulation test filter element pressure loss and the first internal circulation test filter element pressure loss.

[0191] The airflow determination module is used to construct an external circulation target fitting function based on the external circulation airflow and the pressure drop of the auxiliary air supply filter when the damper structure is a double damper and the test operation mode is a semi-internal / external circulation mode; construct an internal circulation target fitting function based on the external circulation filter area ratio and the external circulation target fitting function; and determine the target airflow corresponding to the semi-internal / external circulation mode based on the pressure drop of the first external circulation test filter, the pressure drop of the first internal circulation test filter, the external circulation target fitting function, and the internal circulation target fitting function.

[0192] In some embodiments, the air volume determination module is used to substitute the pressure loss of the first external circulation test filter element into the external circulation target fitting function to obtain the first air volume; substitute the pressure loss of the first internal circulation test filter element into the internal circulation target fitting function to obtain the second air volume; and use the sum of the first air volume and the second air volume as the target air volume corresponding to the semi-internal and external circulation mode.

[0193] In some embodiments, the air volume determination module is used to construct an external circulation target fitting function based on the external circulation air volume and the pressure drop of the auxiliary air supply filter element when the damper structure is a double damper and the test operation mode is a full external circulation mode; and to determine the target air volume corresponding to the full external circulation mode based on the pressure drop of the second external circulation test filter element and the external circulation target fitting function.

[0194] In some embodiments, the air volume determination module is used to construct an external circulation target fitting function based on the external circulation air volume and the pressure drop of the auxiliary air supply filter element when the damper structure is a double damper and the test operating mode is a full internal circulation mode; construct an internal circulation target fitting function based on the external circulation filter element area ratio and the external circulation target fitting function; and determine the target air volume corresponding to the full internal circulation mode based on the pressure drop of the second internal circulation test filter element and the internal circulation target fitting function.

[0195] In some embodiments, the air volume determination module is used to construct an external circulation target fitting function based on the external circulation air volume and the pressure drop of the auxiliary air supply filter element when the damper structure is a single damper; and to determine the target air volume corresponding to the test operation mode based on the external circulation target fitting function and the pressure drop of the single damper test filter element corresponding to the test operation mode.

[0196] In some embodiments, the test module is configured to, when the damper structure of the internal and external circulation dampers is a dual damper, collect the pressure loss of the first external circulation test filter element corresponding to the external circulation channel and the pressure loss of the first internal circulation test filter element corresponding to the internal circulation channel if the test operation mode is a semi-internal and external circulation mode; collect the pressure loss of the second external circulation test filter element corresponding to the external circulation channel if the test operation mode is a full external circulation mode; and collect the pressure loss of the second internal circulation test filter element corresponding to the internal circulation channel if the test operation mode is a full internal circulation mode.

[0197] In some embodiments, the test module is used to collect the pressure loss of the single-door test filter element in the test operation mode when the damper structure of the internal and external circulation damper is a single damper.

[0198] The air volume testing device for air conditioners provided in this embodiment can perform the air volume testing method for air conditioners provided in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0199] Figure 10 A schematic diagram of the structure of the electronic device provided in this application. Figure 10 As shown, the electronic device 100 provided in this embodiment includes at least one processor 1001 and a memory 1002. Optionally, the device 100 further includes a communication component 1003. The processor 1001, memory 1002, and communication component 1003 are connected via a bus.

[0200] In a specific implementation, at least one processor 1001 executes computer execution instructions stored in memory 1002, causing at least one processor 1001 to perform the above-described method.

[0201] The specific implementation process of processor 1001 can be found in the above method embodiments, and its implementation principle and technical effect are similar. It will not be repeated here.

[0202] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0203] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0204] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0205] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0206] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0207] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0208] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0209] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0210] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0211] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0212] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0213] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0214] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A method for testing the airflow of an air conditioner, characterized in that, include: Under the condition of internal circulation auxiliary air supply, the first air volume of the auxiliary ventilation equipment and the first static pressure inside the vehicle corresponding to the first air volume are collected. The internal circulation auxiliary air supply mode is a mode in which the entire vehicle is sealed, the air conditioning mode is set to internal circulation mode, the air conditioning blower is turned off, and air is supplied from inside the vehicle to outside through auxiliary ventilation equipment. In the external circulation auxiliary air supply mode, the second air supply volume of the auxiliary ventilation equipment, the second in-vehicle static pressure corresponding to the second air supply volume, and the pressure loss of the auxiliary air supply filter element in the external circulation channel are collected; the external circulation auxiliary air supply mode is the mode of switching the air conditioning mode of the internal circulation auxiliary air supply mode to the external circulation mode. Under operating conditions, based on the damper structure of the internal and external circulation dampers, the pressure loss of the test filter element corresponding to the operating mode under test is collected; The operating conditions described are those where the entire vehicle is sealed, auxiliary ventilation equipment is removed, and the blower is turned on; The target air volume corresponding to the test operating mode is determined based on the first air supply volume, the first vehicle interior static pressure, the second air supply volume, the second vehicle interior static pressure, the damper structure, the operating mode to be tested, the pressure loss of the auxiliary air supply filter element, and the pressure loss of the test filter element.

2. The method according to claim 1, characterized in that, The step of determining the target airflow corresponding to the operating mode under test based on the first air supply volume, the first vehicle interior static pressure, the second air supply volume, the second vehicle interior static pressure, the damper structure, the operating mode under test, the pressure drop of the auxiliary air supply filter element, and the pressure drop of the test filter element includes: A leakage rate fitting function is constructed based on the first air supply volume and the first vehicle interior static pressure. A mixed air volume fitting function is constructed based on the second air supply volume and the second vehicle interior static pressure. The external airflow volume entering the vehicle through the external airflow damper is obtained by solving the air leakage fitting function and the mixed airflow fitting function. Based on the external circulation air volume and the pressure drop of the auxiliary air supply filter, a target fitting function is constructed according to the damper structure and the operating mode to be tested. Based on the pressure drop of the test filter and the target fitting function, the target air volume corresponding to the operating mode to be tested is determined.

3. The method according to claim 2, characterized in that, When the damper structure is a double damper and the test operation mode is a semi-internal and external circulation mode, the test filter element pressure loss includes the first external circulation test filter element pressure loss and the first internal circulation test filter element pressure loss. The process of constructing a target fitting function based on the external circulation air volume and the pressure drop of the auxiliary air supply filter, according to the damper structure and the operating mode to be tested, and determining the target air volume corresponding to the operating mode to be tested based on the pressure drop of the test filter and the target fitting function, includes: When the damper structure is a double damper and the operating mode to be tested is a semi-internal and external circulation mode, an external circulation target fitting function is constructed based on the external circulation air volume and the pressure loss of the auxiliary air supply filter element. Based on the area ratio of the external circulation filter element and the external circulation target fitting function, an internal circulation target fitting function is constructed. Based on the pressure loss of the first external circulation test filter element, the pressure loss of the first internal circulation test filter element, the target fitting function of the external circulation, and the target fitting function of the internal circulation, the target air volume corresponding to the semi-internal and external circulation mode is determined.

4. The method according to claim 3, characterized in that, The step of determining the target airflow corresponding to the semi-internal / external circulation mode based on the pressure drop of the first external circulation test filter element, the pressure drop of the first internal circulation test filter element, the target fitting function of the external circulation, and the target fitting function of the internal circulation includes: Substituting the pressure loss of the first external circulation test filter element into the external circulation target fitting function, the first air volume is obtained; Substitute the pressure loss of the first internal circulation test filter element into the internal circulation target fitting function to obtain the second air volume; The sum of the first air volume and the second air volume is used as the target air volume corresponding to the semi-internal and external circulation mode.

5. The method according to claim 2, characterized in that, The process of constructing a target fitting function based on the external circulation air volume and the pressure drop of the auxiliary air supply filter, according to the damper structure and the operating mode to be tested, and determining the target air volume corresponding to the operating mode to be tested based on the pressure drop of the test filter and the target fitting function, includes: When the damper structure is a double damper and the test operation mode is a full external circulation mode, an external circulation target fitting function is constructed based on the external circulation air volume and the pressure loss of the auxiliary air supply filter element. Based on the pressure loss of the second external circulation test filter element and the external circulation target fitting function, the target air volume corresponding to the full external circulation mode is determined.

6. The method according to claim 2, characterized in that, The process of constructing a target fitting function based on the external circulation air volume and the pressure drop of the auxiliary air supply filter, according to the damper structure and the operating mode to be tested, and determining the target air volume corresponding to the operating mode to be tested based on the pressure drop of the test filter and the target fitting function, includes: When the damper structure is a double damper and the test operation mode is a full internal circulation mode, the target fitting function of external circulation is constructed based on the external circulation air volume and the pressure loss of the auxiliary air supply filter element. Based on the area ratio of the external circulation filter element and the external circulation target fitting function, an internal circulation target fitting function is constructed. Based on the pressure loss of the filter element in the second internal circulation test and the target fitting function of the internal circulation, the target air volume corresponding to the full internal circulation mode is determined.

7. The method according to claim 2, characterized in that, The process of constructing a target fitting function based on the external circulation air volume and the pressure drop of the auxiliary air supply filter, according to the damper structure and the operating mode to be tested, and determining the target air volume corresponding to the operating mode to be tested based on the pressure drop of the test filter and the target fitting function, includes: When the damper structure is a single damper, an external circulation target fitting function is constructed based on the external circulation air volume and the pressure loss of the auxiliary air supply filter element. Based on the external circulation target fitting function and the single damper test filter pressure loss corresponding to the test operation mode, the target air volume corresponding to the test operation mode is determined.

8. The method according to any one of claims 1 to 6, characterized in that, The damper structure based on internal and external circulation dampers collects the pressure loss of the test filter element corresponding to the operating mode under test, including: When the damper structure of the internal and external circulation damper is a double damper, if the operating mode to be tested is a semi-internal and external circulation mode, the pressure loss of the first external circulation test filter element corresponding to the external circulation channel and the pressure loss of the first internal circulation test filter element corresponding to the internal circulation channel are collected. If the operating mode to be tested is the full external circulation mode, then the pressure loss of the second external circulation test filter element corresponding to the external circulation channel is collected; If the operating mode to be tested is the full internal circulation mode, then the pressure loss of the second internal circulation test filter element corresponding to the internal circulation channel is collected.

9. The method according to claim 1 or 7, characterized in that, The damper structure based on internal and external circulation dampers collects the pressure loss of the test filter element corresponding to the operating mode under test, including: When the damper structure of the internal and external circulation damper is a single damper, the pressure loss of the filter element is collected under the test operation mode.

10. An airflow testing device for an air conditioner, characterized in that, include: The first auxiliary air supply test module is used to collect the first air supply volume of the auxiliary ventilation equipment and the first in-vehicle static pressure corresponding to the first air supply volume under the internal circulation auxiliary air supply condition. The internal circulation auxiliary air supply mode is a mode in which the entire vehicle is sealed, the air conditioning mode is set to internal circulation mode, the air conditioning blower is turned off, and air is supplied from inside the vehicle to outside through auxiliary ventilation equipment. The second auxiliary air supply test module is used to collect the second air supply volume of the auxiliary ventilation equipment, as well as the second in-vehicle static pressure and the pressure loss of the auxiliary air supply filter element in the external circulation channel, under the external circulation auxiliary air supply condition; the external circulation auxiliary air supply condition is the condition in which the air conditioning mode of the internal circulation auxiliary air supply condition is switched to the external circulation mode. The test module is used to collect the pressure loss of the test filter element corresponding to the test operating mode under operating conditions, based on the damper structure of the internal and external circulation dampers. The operating conditions described are those where the entire vehicle is sealed, auxiliary ventilation equipment is removed, and the blower is turned on; The air volume determination module is used to determine the target air volume corresponding to the operating mode under test based on the first air supply volume, the first vehicle interior static pressure, the second air supply volume, the second vehicle interior static pressure, the damper structure, the operating mode under test, the pressure loss of the auxiliary air supply filter element, and the pressure loss of the test filter element.

11. An electronic device, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 1 to 9.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1 to 9.

13. A computer program product, characterized in that, Includes computer execution instructions, which, when executed by a processor, implement the method as described in any one of claims 1 to 9.

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