Testing device

Abstract

The invention discloses a test device, and relates to the technical field of low-temperature tests. The test device comprises a test box body, a test air pipe, an air blowing assembly, a temperature recording module and an air speed recording module. Wherein the test air pipe comprises a first end and a second end; the test air pipe penetrates through the test box body; the air blowing assembly is arranged at the second end; the air blowing assembly can enable environmental gas outside the test box body to flow from the first end to the second end; the tested equipment is arranged at the first end, and at least part of the tested equipment is located in the test air pipe; the temperature recording module can record the temperature of the surface of one side, deviating from the interior of the test air pipe, of the tested equipment; the wind speed recording module can record the speed of the environment gas flowing through the tested equipment. The test device is used for verifying the use performance of the low-temperature equipment in a low-temperature environment, and the low-temperature equipment can be conveniently designed and optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of low-temperature testing, and in particular to a testing device. Background Art

[0002] In extremely cold regions, the requirements for cryogenic equipment differ from those for ships operating in more moderate climates. Electric heated antifreeze shutters are typically installed in key locations throughout the ship—at the air inlets and outlets of the air conditioning and ventilation systems—and are crucial for ensuring safe navigation.

[0003] However, there are currently no standards or specifications for the design and testing of electric-heated antifreeze blinds, either domestically or internationally. There are also no specific requirements or verification methods for low-temperature testing of electric-heated antifreeze blinds for use in extremely cold regions. Internationally, there are no design and testing requirements for electric-heated antifreeze blinds. This makes it difficult to verify the performance of electric-heated antifreeze blinds in extremely cold environments after they are manufactured, leading to a long design and optimization cycle for these devices.

[0004] Therefore, a test device is needed urgently to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a test device for verifying the performance of cryogenic equipment in a low-temperature environment, so as to facilitate the design and optimization of the cryogenic equipment.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The present invention provides a test device, which includes a test box, a test air duct, a blower assembly, a temperature recording module, and a wind speed recording module. The test air duct includes a first end and a second end; the test air duct is arranged to penetrate the test box; the blower assembly is arranged at the second end; the blower assembly is capable of causing ambient air outside the test box to flow from the first end to the second end; the test device is arranged at the first end and is at least partially located inside the test air duct; the temperature recording module is capable of recording the temperature of the surface of the test device on a side facing away from the inside of the test air duct; and the wind speed recording module is capable of recording the speed of the ambient air flowing through the test device.

[0008] In some embodiments, the temperature recording module includes a temperature recorder and a first temperature sensor; the temperature recorder is arranged on the outside of the test box and is coupled to the first temperature sensor; the first temperature sensor is arranged on a side surface of the test equipment facing away from the inside of the test air duct.

[0009] In some embodiments, the wind speed recording module includes a flow recorder and a flow sensor; the flow recorder is arranged on the outside of the test box and is coupled to the flow sensor; the flow sensor is arranged between the outer wall of the test air duct and the inner wall of the test box, and is located on the side of the blowing assembly away from the first end in the first direction.

[0010] In some embodiments, the test device also includes a first temperature control module, which is arranged between the outer wall of the test air duct and the inner wall of the test box; the first temperature control module can control the temperature of the ambient gas flowing through the blowing assembly to a first preset temperature.

[0011] In some embodiments, the first temperature control module includes a first temperature controller and a second temperature sensor coupled to each other; the first temperature controller and the second temperature sensor are both arranged between the outer wall of the test air duct and the inner wall of the test box; the first temperature controller can control the temperature inside the test box to a first preset temperature based on the temperature value inside the test box monitored by the second temperature sensor.

[0012] In some embodiments, the test device further includes a heat-insulating layer applied to the inner wall of the test box.

[0013] In some embodiments, the test device also includes a second temperature control module, which is arranged between the outer wall of the test air duct and the inner wall of the test box, and is located between the test equipment and the blower assembly in the first direction; the second temperature control module can control the temperature of the ambient gas flowing through the blower assembly to a second preset temperature.

[0014] In some embodiments, the second temperature control module includes a second temperature controller and a third temperature sensor coupled to each other; the second temperature controller and the third temperature sensor are both disposed between the outer wall of the test air duct and the inner wall of the test box, and are located between the test device and the air blowing assembly in the first direction;

[0015] The second temperature controller can control the temperature of the ambient gas flowing through the air blowing assembly to a second preset temperature according to the temperature value inside the test air duct monitored by the third temperature sensor.

[0016] In some embodiments, the test device also includes a fourth temperature sensor coupled to the blower assembly; the fourth temperature sensor is arranged between the outer wall of the test air duct and the inner wall of the test box; the side of the blower assembly close to the first end is the air inlet, and the side close to the second end is the air outlet; in the first direction, the fourth temperature sensor is located on the air inlet side of the blower assembly, for monitoring the temperature of the ambient gas flowing through the air inlet; the blower assembly can be started or stopped according to the temperature of the ambient gas at the air inlet monitored by the fourth temperature sensor.

[0017] In some embodiments, the test device further includes a test control module, which is disposed outside the test box and coupled to the electronic components and electric parts in the test device to receive electronic signals generated by the electronic components and control the operation of the electric parts.

[0018] Beneficial effects of the present invention:

[0019] The present invention provides a test device, which is provided by setting a test box and a test air duct that passes through the test box and includes a first end and a second end, and setting an air blowing assembly at the second end of the test air duct, and setting a test equipment at the first end of the test air duct and at least partially located inside the test air duct. The air blowing assembly can make the ambient gas outside the test box flow from the first end of the test air duct to the second end of the test air duct. In addition, a temperature recording module that can record the surface temperature of the side of the test equipment facing away from the inside of the test air duct is provided, and a wind speed recording module that can record the speed of the ambient gas flowing through the test equipment is provided. In this way, after the test device is set at the first end of the test air duct, the blower assembly is started, and the blower assembly forms a continuous airflow from the first end to the second end inside the test air duct. The airflow can directly act on the side surface of the test device away from the second end of the test air duct, so that the scene of the test device being blown by the outdoor ambient gas can be simulated. At the same time, according to the temperature data and wind speed data recorded by the temperature recording module and the wind speed recording module, the actual use performance and use performance of the test device (such as whether it can operate normally or various functional parameters during operation, etc.) can be correlated with the corresponding ambient temperature and ambient wind speed, providing a reliable basis for the design of the test device, thereby facilitating the subsequent targeted optimization or improvement of the test device. In the above process of verifying the use performance of the test device, there is no need to place the test device in a real use scenario. The test process is simple and convenient, and the test conditions are low, which is convenient for designers to conduct repetitive tests, greatly shortening the design and optimization cycle of the test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a structural diagram of a test device provided by a specific embodiment of the present invention.

[0021] In the picture:

[0022] 1. Test equipment; 2. Test chamber; 3. Test air duct; 31. First end; 32. Second end; 4. Air blast assembly; 5. Temperature recording module; 51. Temperature recorder; 52. First temperature sensor; 6. Wind speed recording module; 61. Flow recorder; 62. Flow sensor; 7. First temperature control module; 71. First temperature controller; 72. Second temperature sensor; 8. Insulation layer; 9. Second temperature control module; 91. Second temperature controller; 92. Third temperature sensor; 10. Fourth temperature sensor; 20. Test control module;

[0023] X1, first direction. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0025] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense. For ordinary technicians in this field, they can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0026] In the present invention, unless otherwise clearly stipulated and limited, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0027] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0028] like Figure 1As shown, this embodiment provides a test apparatus for testing the performance of a test device 1 (i.e., relevant test indicators such as the actual application effect, performance, and safety of the test device 1 during use). The test device 1 may be, for example, an electrically heated antifreeze shutter or other low-temperature equipment such as an antifreeze ventilator. The actual test environment of the test device 1 may be, for example, a natural extreme cold environment of -60°C to -20°C or an artificial low-temperature environment of -70°C to -60°C. The test apparatus includes a test chamber 2, a test air duct 3, an air blowing assembly 4, a temperature recording module 5, and a wind speed recording module 6.

[0029] The above-mentioned test box 2 is a cubic shell structure, for example, a rectangular cubic shell structure or a cylindrical cubic shell structure. The above-mentioned test air duct 3 includes a first end 31 and a second end 32, and the test air duct 3 is arranged to pass through the above-mentioned test box 2. In other words, installation openings are opened on the two opposite side walls of the test box 2, and the first end 31 and the second end 32 of the test air duct 3 are respectively installed in the above-mentioned two installation openings. The test air duct 3 is, for example, a circular pipe or a square pipe, and the "circular" and "square" here refer to the cross-sectional shape of the pipe being circular or square. It is easy to understand that in order to adapt to test equipment 1 of different sizes, the above-mentioned test air duct 3 can also be subjected to diameter-changing processing, that is, as shown in FIG. Figure 1 As shown, if the size of the test device 1 is larger, the diameter of the first end 31 of the test air duct 3 can be adaptively set to a larger size. Similarly, if the size of the test device 1 is smaller, the diameter of the first end 31 of the test air duct 3 can also be adaptively set to a smaller size.

[0030] like Figure 1As shown, the blower assembly 4 is disposed at the second end 32 of the test air duct 3, and the test device 1 is disposed at the first end 31 of the test air duct 3 and is at least partially located inside the test air duct 3. The blower assembly 4 is capable of causing ambient air outside the test chamber 2 to flow from the first end 31 to the second end 32. Exemplarily, the blower assembly 4 is an axial-flow variable-frequency fan or a centrifugal variable-frequency fan, which has an air outlet (air outlet) and an air inlet (air inlet) disposed oppositely. The variable-frequency fan is disposed at the second end 32 of the test air duct 3, and the air inlet of the variable-frequency fan is disposed directly opposite the first end 31 of the test air duct 3. In this way, after the variable-frequency fan is started, the ambient air outside the test chamber 2 can be sucked into the air inlet of the variable-frequency fan from the first end 31. After being pressurized and accelerated by the impeller of the variable-frequency fan, the air is discharged from the air outlet of the variable-frequency fan to the second end 32, thereby forming a continuous airflow path from the first end 31 to the second end 32 of the test air duct 3. It is easy to understand that by changing the rotation speed (operating power) of the blower assembly 4, the wind speed of the airflow flowing from the first end 31 to the second end 32 of the test air duct 3 can be changed. Specifically, after the rotation speed of the blower assembly 4 is changed, the air volume flowing through the inside of the test air duct 3 changes, but because the cross-sectional area (ventilation area) of the test air duct 3 does not change, according to air volume = wind speed × ventilation area, it can be known that the wind speed flowing through the test air duct 3 will also change at this time. In other words, the wind speed of the airflow flowing through the test device 1 can be changed by the blower assembly 4, and further, the wind speed flowing through the side surface of the test device 1 away from the inside of the test air duct 3 can be changed. In this way, the test device can simulate test environments with different wind speeds, thereby improving the practicality of the test device.

[0031] The temperature recording module 5 is capable of recording the surface temperature of the side of the test device 1 facing away from the interior of the test air duct 3. The wind speed recording module 6 is capable of recording the velocity of the ambient gas flowing through the test device 1. That is, by providing the temperature recording module 5 and the wind speed recording module 6, the surface temperature and surface wind speed of the side of the test device 1 facing away from the interior of the test air duct 3 under different environments can be recorded. For example, when the test device 1 is an electrically heated antifreeze blind, the temperature recording module 5 and the wind speed recording module 6 are capable of recording the surface temperature and surface wind speed of the blades of the electrically heated antifreeze blind under different environments.

[0032] Therefore, the present embodiment provides a test device, which is provided by setting a test box 2, and setting a test air duct 3 that passes through the test box 2 and includes a first end 31 and a second end 32, and setting a blowing assembly 4 at the second end 32 of the test air duct 3, and setting the test equipment 1 at the first end 31 of the test air duct 3 and at least partially located inside the test air duct 3. The blowing assembly 4 can make the ambient gas outside the test box 2 flow from the first end 31 of the test air duct 3 to the second end 32 of the test air duct 3. In addition, a temperature recording module 5 is provided that can record the surface temperature of the side of the test equipment 1 facing away from the inside of the test air duct 3, and a wind speed recording module 6 is provided that can record the speed of the ambient gas flowing through the test equipment 1. In this way, after the test device 1 is set at the first end 31 of the test air duct 3, the blower assembly 4 is started, and the blower assembly 4 forms a continuous airflow from the first end 31 to the second end 32 inside the test air duct 3. The airflow can directly act on the side surface of the test device 1 away from the second end 32 of the test air duct 3, so that the scene of the test device 1 being blown by the outdoor ambient gas can be simulated. At the same time, according to the temperature data and wind speed data recorded by the temperature recording module 5 and the wind speed recording module 6, the actual use performance and use performance of the test device 1 (such as whether it can operate normally or various functional parameters during operation, etc.) can be correlated with the corresponding ambient temperature and ambient wind speed, providing a reliable basis for the design of the test device 1, thereby facilitating the subsequent targeted optimization or improvement of the test device 1. In the above process of verifying the use performance of the test device 1, there is no need to place the test device 1 in a real use scenario. The test process is simple and convenient, and the test conditions are low, which is convenient for designers to conduct repetitive tests, greatly shortening the design and optimization cycle of the test device 1.

[0033] In some embodiments, as Figure 1As shown, the temperature recording module 5 includes a temperature recorder 51 and a first temperature sensor 52. The temperature recorder 51 is arranged on the outside of the test box 2, and the first temperature sensor 52 is arranged on the side surface of the test device 1 facing away from the inside of the test air duct 3. The temperature recorder 51 is coupled to the first temperature sensor 52, and the coupling here includes electrical connection and signal connection. Exemplarily, the temperature recorder 51 is arranged on the outer wall of the test box 2. The temperature recorder 51 is, for example, a paperless temperature recorder 51, which has a microprocessor and a memory. The temperature data can be stored in digital form or graphical form. The temperature recorder 51 is, for example, a testo 175 series temperature recorder, or a sauermann KT320 series temperature recorder. The first temperature sensor 52 is a contact temperature sensor, such as a thermocouple temperature sensor or a thermistor temperature sensor, or a wireless temperature sensor with an integrated radio frequency module (such as LoRa, ZigBee). The temperature of the surface of the test equipment 1 on the side facing away from the inside of the test air duct 3 is collected by the first temperature sensor 52, and then the collected temperature data is sent to the temperature recorder 51. The temperature data is recorded by the temperature recorder 51 to facilitate the comparison of the actual use effect of the test equipment 1 with the ambient temperature, providing a basis for the subsequent design and optimization of the test equipment 1.

[0034] It is readily understood that the first temperature sensor 52 may also be a non-contact temperature sensor, such as an infrared temperature sensor. Those skilled in the art may flexibly select and configure the sensor based on actual usage requirements, and this is not intended to be limiting. Furthermore, the number of first temperature sensors 52 may also be multiple, with the multiple first temperature sensors 52 evenly spaced and disposed on a side of the test device 1 facing away from the interior of the test chamber 1.

[0035] In some embodiments, as Figure 1 As shown, the wind speed recording module 6 includes a flow recorder 61 and a flow sensor 62. The flow recorder 61 is arranged outside the test box 2, and the flow sensor 62 is arranged between the outer wall of the test air duct 3 and the inner wall of the test box 2. In the first direction X1 (herein, the first direction X1 refers to the extension direction of the test air duct 3), the flow sensor 62 is located on the side of the blower assembly 4 away from the first end 31 of the test air duct 3, that is, Figure 1Taking the perspective shown as an example, in the horizontal direction, the flow sensor 62 is located on the right side of the above-mentioned blower assembly 4. The flow recorder 61 is coupled to the flow sensor 62. Exemplarily, the above-mentioned flow recorder 61 is an independent flow recorder 61, such as a DS 500 series intelligent paperless recorder. The flow recorder 61 can be connected to multiple flow sensors 62 to achieve multi-channel data acquisition and storage. The above-mentioned flow sensor 62 is, for example, a guided pulse probe sensor, or a differential pressure probe sensor, or an inserted vortex probe sensor. Of course, the above-mentioned flow sensor 62 can also be a non-probe flow sensor. In this case, the flow sensor 62 needs to be arranged inside the above-mentioned test air duct 3. The volume of the ambient gas (i.e., air volume) flowing through the test equipment 1 is collected through the flow sensor 62, and the collected air volume data is then sent to the flow recorder 61. The flow recorder 61 converts the air volume data into wind speed data (i.e., wind speed data on the side surface of the test equipment 1 facing away from the inside of the test air duct 3) based on the air inlet area flowing through the test equipment 1, and records the wind speed data to facilitate the comparison between the actual use effect of the test equipment 1 and the ambient wind speed, thereby providing a basis for the subsequent design and optimization of the test equipment 1.

[0036] In some embodiments, as Figure 1 As shown, the test apparatus further includes a first temperature control module 7. The first temperature control module 7 is disposed between the outer wall of the test air duct 3 and the inner wall of the test chamber 2. The first temperature control module 7 is capable of controlling the temperature inside the test chamber 2 to a first preset temperature, such as +5°C, +10°C, or 0°C. By so configuring, the temperature inside the test chamber 2 can be controlled to the first preset temperature, ensuring that the outer surface of the test device 1 facing the interior of the test chamber 2 (i.e., the side facing the second end 32 of the test air duct 3) is exposed to an environment with a temperature of the first preset temperature. This allows for a more realistic simulation of the actual operating environment of the test device 1 (for example, if the test device 1 is an electrically heated antifreeze blind, one side of the electrically heated antifreeze blind faces the lower outdoor environment (approximately -60°C to -20°C) during use, and the other side faces the higher indoor environment (approximately +5°C). This ensures that the test process of the test device 1 is more realistic and the test data is more accurate.

[0037] For example, Figure 1As shown, the first temperature control module 7 includes a first temperature controller 71 and a second temperature sensor 72 coupled to each other. Here, the two can be directly coupled or coupled through other intermediate components (such as the test control module 20). The first temperature controller 71 and the second temperature sensor 72 are both arranged between the outer wall of the test air duct 3 and the inner wall of the test box 2. Specifically, the first temperature controller 71 and the second temperature sensor 72 can be arranged between the outer wall of the test air duct 3 and the inner wall of the test box 2 through a support frame. For example, one end of the support frame is connected to the outer wall of the test air duct 3 and the other end is used to fix electronic components. For another example, one end of the support frame is connected to the inner wall of the test box 2 and the other end is used to fix electronic components.

[0038] The first temperature controller 71 can control the temperature inside the test chamber 2 to a first preset temperature based on the temperature value inside the test chamber 2 monitored by the second temperature sensor 72. The first temperature controller 71 can be an electric airflow heater that converts electrical energy into thermal energy through a resistance wire, silicon carbon rod, or thin film element, enabling precise temperature control. An example of the first temperature controller 71 is a CFM-2000 series electric airflow heater. The first temperature controller 71 can also be an infrared radiation airflow heater that directly heats gas molecules through infrared radiation emitted by carbon fiber or quartz tubes, enabling contactless and rapid temperature increase. An example of the first temperature controller 71 is an IR-800 series silicon carbide infrared tubular heater. The second temperature sensor 72 can be, for example, a thermocouple probe temperature sensor, a thermal resistor probe temperature sensor, or a thermistor probe temperature sensor.

[0039] Through the above-mentioned setting, the first temperature controller 71 can adaptively control the temperature inside the test box 2 according to the temperature inside the test box 2 monitored by the second temperature sensor 72. That is, when the temperature inside the test box 2 is lower than the first preset temperature, the first temperature controller 71 starts to run, and when the temperature inside the test box 2 reaches the first preset temperature, the first temperature controller 71 stops running, thereby avoiding invalid working time of the first temperature controller 71 and saving energy; in other words, when the difference between the temperature inside the test box 2 and the first preset temperature is large, the first temperature controller 71 starts with a higher power, and when the difference between the temperature inside the test box 2 and the first preset temperature is small, the first temperature controller 71 starts with normal power or starts with a lower power, thereby avoiding redundant work of the first temperature controller 71 and further saving energy.

[0040] In some embodiments, as Figure 1As shown, the above-mentioned test device also includes an insulation layer 8, which is laid on the inner wall of the test box 2. The insulation layer 8 can be an insulation layer 8 made of an organic polymer material (such as polyurethane foam material, polystyrene, foamed polypropylene and other materials), or an insulation layer 8 made of an inorganic material (such as rock wool, glass wool, silicate composite material and other materials), or an insulation layer 8 made of a composite structural material (such as polyurethane + aluminum foil reflective layer, PU foam + non-woven polyester, silicate + vacuum board, etc.). Those skilled in the art can make selective settings according to actual use requirements, and no excessive restrictions are made here. By laying the insulation layer 8 on the inner wall of the test device, the first preset temperature can be maintained inside the test device, thereby ensuring that the test device can more realistically simulate the actual use environment of the test device 1, ensuring that the test process of the test device 1 is more realistic and the test data is more accurate.

[0041] In some embodiments, as Figure 1 As shown, the above-mentioned test device also includes a second temperature control module 9, which is arranged between the outer wall of the above-mentioned test air duct 3 and the inner wall of the test box 2, and in the first direction X1, the second temperature control module 9 is located between the test device 1 and the blower assembly 4. The second temperature control module 9 can control the temperature of the ambient gas flowing through the blower assembly 4 to a second preset temperature, and the second preset temperature is greater than or equal to -25°C. For example, the second preset temperature is -25°C, and for another example, the second preset temperature is -10°C, and for another example, the second preset temperature is +5°C. Through the above-mentioned setting, it can be ensured that the ambient gas flowing through the blower assembly 4 is the second preset temperature, thereby placing the blower assembly 4 in a suitable working environment, avoiding failure of the blower assembly 4 when operating in a harsh working environment, and improving the reliability of the entire test device during use.

[0042] For example, Figure 1 As shown, the second temperature control module 9 includes a second temperature controller 91 and a third temperature sensor 92 coupled to each other. Here, the two can be directly coupled or coupled through other intermediate components (such as the test control module 20). The second temperature controller 91 and the third temperature sensor 92 are both arranged between the outer wall of the test air duct 3 and the inner wall of the test box 2. Specifically, the second temperature controller 91 and the third temperature sensor 92 can be arranged between the outer wall of the test air duct 3 and the inner wall of the test box 2 through a support frame. For example, one end of the support frame is connected to the outer wall of the test air duct 3 and the other end is used to fix electronic components. For another example, one end of the support frame is connected to the inner wall of the test box 2 and the other end is used to fix electronic components. In the first direction X1, the second temperature controller 91 and the third temperature sensor 92 are located between the test device 1 and the blast assembly 4. In other words, Figure 1Taking the perspective shown as an example, from left to right, the device under test 1, the third temperature sensor 92, the second temperature controller 91, and the air blower assembly 4 are shown. The second temperature controller 91 controls the temperature of the ambient air flowing through the air blower assembly 4 to a second preset temperature based on the temperature inside the test air duct 3 monitored by the third temperature sensor 92. The second temperature controller 91 is, for example, the same as the first temperature controller 71 described above, and the third temperature sensor 92 is, for example, the same as the second temperature sensor 72 described above, and their descriptions are not repeated here.

[0043] Through the above-mentioned setting, the second temperature controller 91 can adaptively control the temperature inside the test air duct 3 according to the temperature inside the test air duct 3 monitored by the third temperature sensor 92, that is, when the temperature inside the test air duct 3 is lower than the second preset temperature, the second temperature controller 91 starts to run, and when the temperature inside the test air duct 3 reaches the second preset temperature, the second temperature controller 91 stops running, thereby avoiding invalid working time of the second temperature controller 91 and saving energy; in other words, when the difference between the temperature inside the test air duct 3 and the second preset temperature is large, the second temperature controller 91 starts with a higher power, and when the difference between the temperature inside the test box 2 and the first preset temperature is small, the second temperature controller 91 starts with normal power or starts with a lower power, thereby avoiding redundant work of the second temperature controller 91 and further saving energy.

[0044] In some embodiments, as Figure 1 As shown, the above-mentioned test device also includes a fourth temperature sensor 10 coupled to the above-mentioned air blast assembly 4. Here, the two can be directly coupled or coupled through other intermediate components (such as the test control module 20). The fourth temperature sensor 10 is arranged between the outer wall of the test air duct 3 and the inner wall of the test box 2. Specifically, the fourth temperature sensor 10 can be arranged between the outer wall of the test air duct 3 and the inner wall of the test box 2 through a support frame. For example, one end of the support frame is connected to the outer wall of the test air duct 3 and the other end is used to fix electronic components. For another example, one end of the support frame is connected to the inner wall of the test box 2 and the other end is used to fix electronic components. Among them, the side of the air blast assembly 4 close to the first end 31 of the test air duct 3 is the air inlet, and the side close to the second end 32 of the test air duct 3 is the air outlet. In the first direction X1, the fourth temperature sensor 10 is located on the air inlet side of the air blast assembly 4, that is, with Figure 1Taking the perspective shown as an example, the fourth temperature sensor 10 is located horizontally to the left of the blower assembly 4. This fourth temperature sensor 10 is used to monitor the temperature of the ambient air flowing through the air inlet of the blower assembly 4. This fourth temperature sensor 10 is, for example, the same as the second temperature sensor 72 and the third temperature sensor 92 described above, and their descriptions are not repeated here. Furthermore, the blower assembly 4 can be started or stopped based on the ambient air temperature at the air inlet monitored by the fourth temperature sensor 10. Specifically, when the fourth temperature sensor 10 detects that the ambient air temperature at the air inlet of the blower assembly 4 is below a second preset temperature, the blower assembly 4 stops operating; when the fourth temperature sensor 10 detects that the ambient air temperature at the air inlet of the blower assembly 4 is greater than or equal to the second preset temperature, the blower assembly 4 starts operating. This configuration further ensures that the blower assembly 4 only starts operating when it is in a suitable operating environment (i.e., the temperature is equal to or greater than the second preset temperature), preventing malfunctions of the blower assembly 4 when operating in harsh operating environments and further improving the reliability of the entire test device during use.

[0045] In some embodiments, as Figure 1 As shown, the test device further includes a test control module 20. The test control module 20 is arranged outside the test box 2 and is coupled to the electronic components and electric components in the test device to receive the electronic signals generated by these electronic components and control the operation of the electric components. It is not difficult to understand that the electronic components include the temperature recorder 51, the first temperature sensor 52, the flow recorder 61, the flow sensor 62, the second temperature sensor 72, the third temperature sensor 92, and the fourth temperature sensor 10 described above, and the electric components include the first temperature controller 71, the second temperature controller 91, and the blast assembly 4 described above. By such an arrangement, the test device can change the test environment according to the test requirements of different test equipment 1 (that is, change the temperature in the test box 2, change the temperature in the test air duct 3, and change the wind speed of the blast assembly 4), thereby improving the practicality of the test device.

[0046] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A test device for testing the performance of a test device (1), characterized in that: include: Test chamber (2); A test air duct (3) includes a first end (31) and a second end (32); the test air duct (3) is arranged to pass through the test box (2); An air blowing assembly (4) is arranged at the second end (32); the air blowing assembly (4) is capable of causing ambient air outside the test box (2) to flow from the first end (31) to the second end (32); the test device (1) is arranged at the first end (31) and is at least partially located inside the test air duct (3); a temperature recording module (5) capable of recording the temperature of a surface of the test device (1) on a side facing away from the interior of the test air duct (3); A wind speed recording module (6) is capable of recording the speed of the ambient gas flowing through the test device (1).

2. The test device according to claim 1, characterized in that The temperature recording module (5) comprises a temperature recorder (51) and a first temperature sensor (52); The temperature recorder (51) is arranged outside the test box (2) and is coupled to the first temperature sensor (52); The first temperature sensor (52) is arranged on a surface of the test device (1) facing away from the interior of the test air duct (3).

3. The test device according to claim 1, characterized in that The wind speed recording module (6) includes a flow recorder (61) and a flow sensor (62); The flow recorder (61) is arranged outside the test box (2) and is coupled to the flow sensor (62); The flow sensor (62) is arranged between the outer wall of the test air duct (3) and the inner wall of the test box (2), and is located on the side of the air blowing assembly (4) away from the first end (31) in the first direction (X1).

4. The test device according to claim 1, characterized in that It also includes a first temperature control module (7) disposed between the outer wall of the test air duct (3) and the inner wall of the test box (2); the first temperature control module (7) is capable of controlling the temperature inside the test box (2) to be a first preset temperature.

5. The test device according to claim 4, characterized in that The first temperature control module (7) comprises a first temperature controller (71) and a second temperature sensor (72) coupled to each other; the first temperature controller (71) and the second temperature sensor (72) are both arranged between the outer wall of the test air duct (3) and the inner wall of the test box (2); the first temperature controller (71) can control the temperature inside the test box (2) to a first preset temperature based on the temperature value inside the test box (2) monitored by the second temperature sensor (72).

6. The test device according to claim 1, characterized in that It also includes a heat-insulating layer (8) which is laid on the inner wall of the test box (2).

7. The test device according to claim 1, characterized in that The invention also includes a second temperature control module (9), which is arranged between the outer wall of the test air duct (3) and the inner wall of the test box (2), and is located between the test device (1) and the blower assembly (4) in the first direction (X1); the second temperature control module (9) is capable of controlling the temperature of the ambient gas flowing through the blower assembly (4) to be a second preset temperature.

8. The test device according to claim 7, characterized in that The second temperature control module (9) comprises a second temperature controller (91) and a third temperature sensor (92) coupled to each other; the second temperature controller (91) and the third temperature sensor (92) are both arranged between the outer wall of the test air duct (3) and the inner wall of the test box (2), and are located between the test device (1) and the air blowing assembly (4) in the first direction (X1); The second temperature controller (91) can control the temperature of the ambient gas flowing through the blowing assembly (4) to a second preset temperature based on the temperature value inside the test air duct (3) monitored by the third temperature sensor (92).

9. The test device according to claim 8, characterized in that It also includes a fourth temperature sensor (10) coupled to the air blast assembly (4); the fourth temperature sensor (10) is arranged between the outer wall of the test air duct (3) and the inner wall of the test box (2); the side of the air blast assembly (4) close to the first end (31) is an air inlet, and the side close to the second end (32) is an air outlet; in the first direction (X1), the fourth temperature sensor (10) is located on the air inlet side of the air blast assembly (4) and is used to monitor the temperature of the ambient gas flowing through the air inlet; The air blowing assembly (4) can be started or stopped according to the temperature of the ambient gas at the air inlet monitored by the fourth temperature sensor (10).

10. The test device according to any one of claims 1 to 9, characterized in that: It also includes a test control module (20) which is arranged outside the test box (2) and is coupled to the electronic components and electric parts in the test device to receive the electronic signals generated by the electronic components and control the operation of the electric parts.

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