Tidal state pretreatment device

Abstract

The utility model provides a tidal state pretreatment device which is used for performing tidal state pretreatment on electrical equipment. The wet state pretreatment device comprises an air film which forms a closed air film space in an open state and is used for accommodating the electrical equipment; the hot air circulation assembly is used for generating heating gas; the humidity regulation and control assembly is used for generating steam; and one end of the air supply pipe communicates with the air film space, the other end of the air supply pipe communicates with the hot air circulation assembly and the humidity regulation and control assembly, and the air supply pipe is used for conveying the heating air and the steam into the air film space, so that the temperature and the humidity in the air film space reach preset values correspondingly.

Description

Technical Field

[0001] This application relates to the technical field of safety testing, and particularly to a damp state pre-treatment device for withstand voltage testing. Background Art

[0002] In order to ensure that electrical equipment complies with corresponding international standards, it is necessary to conduct various tests on the electrical equipment to ensure quality and safety. Among them, the withstand voltage test (also known as the dielectric strength test) is one of the most common test items required by most electrical safety standards (such as UL, IEC, etc.).

[0003] During the use of electrical equipment, it may be exposed to high-temperature and high-humidity environments, which may affect the insulation performance and electrical safety of the electrical equipment. Therefore, it is necessary to perform damp heat pre-treatment on the electrical equipment before the withstand voltage test to simulate high-temperature and high-humidity conditions.

[0004] Due to reasons such as site and test equipment, traditional damp heat pre-treatment devices require high costs. Especially for large electrical equipment, limited by the space size and cost of traditional damp heat pre-treatment devices, it is difficult to conduct compliant electrical safety tests. Utility Model Content

[0005] This application provides a damp state pre-treatment device for performing damp state pre-treatment on electrical equipment; the damp state pre-treatment device includes: an air film that forms a closed air film space in the expanded state for accommodating the electrical equipment; a hot air circulation component for generating heated gas; a humidity control component for generating steam; and a supply pipe with one end communicating with the air film space and the other end communicating with the hot air circulation component and the humidity control component respectively for delivering the heated gas and the steam into the air film space so that the temperature and humidity in the air film space reach preset values respectively.

[0006] In at least one embodiment of this application, the humidity control component is connected between the air film and the hot air circulation component, and the heated gas drives the steam to be delivered into the air film space through the supply pipe.

[0007] In at least one embodiment of this application, the air film includes a top, a bottom and a side, the top and the bottom are opposite and spaced apart, and the side is connected between the top and the bottom; the top, the bottom and the side enclose to form the air film space.

[0008] In at least one embodiment of this application, the inner wall of the top is an arc surface or an inclined surface.

[0009] In at least one embodiment of this application, the top includes an outer film and an inner film arranged at intervals.

[0010] In at least one embodiment of the present application, a locking structure is provided on the side portion, and the opening and closing of the locking structure can be used to control the opening or closing of the air film space.

[0011] In at least one embodiment of the present application, an observation window is formed on the side portion. One side of the observation window contacts air, and the other side contacts the air film space. An anti-fog film is formed on the side of the observation window that contacts the air film space.

[0012] In at least one embodiment of the present application, the damp state preprocessing device further includes a sensor, which is electrically connected to the hot air circulation component and the humidity control component respectively; the sensor is used to detect the temperature detection value and humidity detection value in the air film space; the temperature detection value is used to feedback and adjust the working parameters of the hot air circulation component, and the humidity detection value is used to feedback and adjust the working parameters of the humidity control component.

[0013] In at least one embodiment of the present application, the sensor is fixedly connected to the side portion.

[0014] In at least one embodiment of the present application, the damp state preprocessing device further includes an alarm electrically connected to the sensor, which is used to emit light when the detected temperature value and / or the detected humidity value reaches the alarm value.

[0015] The above-mentioned damp state preprocessing device forms an air film space for accommodating electrical equipment and testers by using a low-cost and foldable air film, reducing the cost of damp heat preprocessing tests, and helping to truly evaluate the insulation performance and reliability of products in high-temperature and high-humidity environments; on this basis, according to different electrical equipment, the air film can be expanded to different sizes to form air film spaces of different volumes, so the size of the air film space can be flexibly adjusted according to different sizes of electrical equipment; moreover, the air film has good airtightness and heat preservation, and can maintain the preset temperature value and preset humidity value for a long time after reaching the preset temperature value and preset humidity value for the first time. During this period, the hot air circulation component and the humidity control component do not need to work continuously, and the standby power is low. Therefore, the damp state preprocessing device 1 of the present application is beneficial to energy saving; in addition, the damp state preprocessing device can form an air film space that allows testers to directly enter. Therefore, when performing a withstand voltage test on electrical equipment, it is not necessary to first remove the electrical equipment from the air film space, and the detection can be carried out in a timely manner, avoiding the detection not meeting the standard requirements due to the decrease in temperature and humidity during the process of the electrical equipment entering and leaving. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structure diagram of the damp state preprocessing device according to an embodiment of the present application.

[0017] Figure 2 It is another three-dimensional structure diagram of the damp state preprocessing device according to an embodiment of the present application.

[0018] Figure 3 The Figure 1 schematic cross-sectional structure diagram of the damp-state preprocessing device along the III-III line.

[0019] Figure 4 is Figure 3 the enlarged view of part A of

[0020] Description of main component symbols

[0021] Damp-state preprocessing device 1

[0022] Air film 10

[0023] Air film space 11

[0024] Top 12

[0025] Inner membrane 121

[0026] Outer membrane 122

[0027] Gap 123

[0028] Bottom 13

[0029] Sides 14, 14a, 14b, 14c, 14d

[0030] Locking structure 141

[0031] Observation window 142

[0032] Hot air circulation component 20

[0033] Air intake grille 21

[0034] Humidity control component 30

[0035] Sensor 40

[0036] Supply air pipe 50

[0037] Return air pipe 60

[0038] Alarm 70

[0039] The following specific embodiments will further illustrate the present application in combination with the above-mentioned drawings. Specific embodiments

[0040] The present application provides a damp-state preprocessing device, which is used to simulate a high-temperature and high-humidity environment to perform damp-state preprocessing on electrical equipment. Subsequently, a withstand voltage test is performed on the preprocessed electrical equipment, and various performances of the electrical equipment in a high-temperature and high-humidity environment can be evaluated. The damp-state preprocessing device of the present application has the advantages of low cost, adjustable size, automation, etc. compared with traditional devices.

[0041] Please also read Figure 1 and Figure 2 The humid pretreatment device 1 of the embodiment of the present application includes an air film 10, a hot air circulation component 20, a humidity control component 30, a sensor 40, an air supply pipe 50, an air return pipe 60 and an alarm 70. The hot air circulation component 20, the humidity control component 30, the sensor 40, the air supply pipe 50, the air return pipe 60 and the alarm 70 are connected to the air film 10.

[0042] The hot air circulation component 20 is used to generate hot air, and the humidity control component 30 is used to generate steam. The hot air and steam flow into the air membrane 10 through the air supply pipe 50 and the return air pipe 60 to simulate a high temperature and high humidity environment in the air membrane 10. The sensor 40 is used to monitor the temperature and humidity in the air membrane 10 in real time, so as to realize feedback adjustment of the hot air circulation component 20 and the humidity control component 30. The alarm 70 is used to emit light and / or sound a whistle to remind when the temperature and / or humidity reaches the alarm value.

[0043] The air film 10 (i.e., the air-supported membrane structure) is a flexible structure as a whole, and has good airtightness and heat preservation, and can reduce the heat exchange between the inner and outer spaces of the air film 10. The air film 10 is stretched open ( Figure 1-2 The air film space 11 is formed in a closed state. Figure 3 ). After the hot air and steam enter the air membrane space 11, they fill the entire air membrane space 11 so that the air membrane space 11 can simulate a high temperature and high humidity environment (specific temperature and humidity values ​​are pre-set). The air membrane space 11 can accommodate multiple large-sized electrical equipment, thereby supporting the tidal pretreatment of multiple large electrical equipment. In addition, the air membrane space 11 can also accommodate inspection personnel, so that the inspection personnel can directly enter the air membrane space 11 to inspect the electrical equipment.

[0044] The air membrane 10 can be folded and stored when the tidal pretreatment device 1 is in an idle state. Therefore, even for the air membrane 10 described in this embodiment that can accommodate one or more large electrical equipment and can accommodate detection personnel, it can be folded into a smaller volume when idle, which is beneficial to reducing its footprint.

[0045] The air film 10 has a top 12, a bottom 13 and a side 14. The top 12 and the bottom 13 are opposite and spaced apart, and the side 14 is connected between the top 12 and the bottom 13. The top 12, the bottom 13 and the side 14 enclose the air film space 11. In this embodiment, the bottom 13 is rectangular, and the air film 10 includes four side portions 14, namely side portions 14a, 14b, 14c, and 14d. The side portions 14a, 14b, 14c, and 14d are connected in sequence and are respectively connected to the four sides of the bottom 13. That is, two adjacent side portions are perpendicular to each other.

[0046] In this embodiment, the top 12 is arched, so that the inner wall of the top 12 is an arc surface. When the air film space 11 is in a high-temperature and high-humidity environment, the inner wall of the air film 10 is in direct contact with the high-temperature gas, and the outer wall is in direct contact with the relatively low-temperature air. Affected by the temperature difference between the inside and outside, condensed water may be generated on the inner wall of the top 12. The accumulated condensed water is likely to drip. In this embodiment, the inner wall of the top 12 is set as an arc surface, so that the condensed water can slide down along the arc-shaped inner wall of the top 12 to the side portions 14b and 14d of the air film 10, effectively preventing the condensed water from directly dripping onto the electrical equipment in the air film space 11.

[0047] In other embodiments of the present application, the inner wall of the top 12 can also be set as an inclined surface. In this way, the condensed water can also slide down along the inclined inner wall of the top 12 to the side portions 14b and 14d of the air film 10, preventing the condensed water from directly dripping onto the electrical equipment in the air film space 11. In other embodiments of the present application, the inner wall of the top 12 can also form diversion grooves extending towards the side portions 14b and 14d of the air film 10 and water collecting tanks provided at the joints of the side portions 14b and 14d and the bottom 13, guiding the condensed water to the side portions 14b and 14d of the air film 10 and collecting it through the water collecting tanks, preventing the condensed water from directly dripping onto the electrical equipment in the air film space 11.

[0048] Please refer to Figure 3 and Figure 4 In this embodiment, the top 12 is a double-layer structure, including an inner film 121 and an outer film 122, and there is a gap 123 between the inner film 121 and the outer film 122. By inflating the gap 123, the top 12 can be supported, so that the air film 10 is in a stretched state, forming a relatively large air film space 11. In other embodiments of the present application, the moisture pretreatment device 1 may further include a plurality of support skeletons located inside the air film 10. The support skeletons can be telescopic to stretch or fold the air film 10. And by adjusting the telescopic degree of the support skeletons, the degree of folding and stretching of the air film 10 can also be adjusted, thereby adjusting the size of the air film space 11 to adapt to the sizes of different electrical equipment to be measured.

[0049] During the working process of the moisture pretreatment device 1, the air film space 11 is in a high-temperature and high-humidity state. Since the top 12 is a double-layer structure composed of the outer film 122 and the inner film 121, the inner side of the inner film 121 is in contact with the high-temperature gas, and the outer side is not directly in contact with the external low-temperature air due to the existence of the outer film 122. Therefore, the temperature difference between the two sides of the inner film 121 is reduced to a certain extent, effectively reducing the generation of condensed water. In addition, for the outer film 122, even if condensed water is generated on its inner side, it will be blocked by the inner film 121 and will not drip onto the electrical equipment. Therefore, in this embodiment, by setting the top 12 to include the outer film 122 and the inner film 121, the problem of misjudgment caused by condensed water dripping onto the electrical equipment can be further solved.

[0050] In this embodiment, the material of the inner film 121 is thermoplastic polyurethane elastomer (TPU), which has the characteristics of toughness and aging resistance; the material of the outer film 122 is polyvinyl chloride (PVC), which has ductility and good heat insulation.

[0051] Please also refer to Figure 1 - Figure 2 , a locking structure 141 is provided on the side portion 14a of the air film 10. In this embodiment, the locking structure 141 is a zipper. The locking structure 141 extends from a position near the top 12 of the side portion 14a to a position near the bottom 13. When the locking structure 141 is closed, it can enclose the air film 10 to form a closed air film space 11 (see Figure 3 ), when the locking structure 141 is opened, an opening almost the same size as the side portion 14a can be formed, which is convenient for the testers and electrical equipment to enter and exit. And the locking structure 141 is easy to operate, which is beneficial to improving the user experience and the testing efficiency of the electrical equipment.

[0052] An observation window 142 is provided on the side portion 14b of the air film 10. The observation window 142 is made of a transparent material, which can facilitate the testers to observe the conditions inside the air film space 11 at any time when the locking structure 141 is closed, and avoid the fluctuations of temperature and humidity inside the air film space 11 caused by opening the locking structure 141. In this embodiment, an anti-fog film (not shown in the figure) is formed on the inner wall of the observation window 142 to prevent the fog from affecting the line of sight.

[0053] The hot air circulation component 20 and the humidity control component 30 are located on one side of the side portion 14c of the air film 10. The hot air circulation component 20 may include components such as a blower and a heating device that can heat and convey gas. It is used to generate and output high-temperature gas into the air supply pipe 50. In this embodiment, the hot air circulation component 20 is also provided with an air intake grid as a channel for air to enter the hot air circulation component 20. The humidity control component 30 may include components such as a steam hose and an atomizing nozzle that can generate water vapor, and is used to generate and output water vapor.

[0054] The air supply pipe 50 surrounds the outside of the side portions 14c and 14d and is arranged near the bottom 13. One end of the air supply pipe 50 is connected to the humidity control component 30 and the hot air circulation component 20 in sequence, and the other end is connected to the air film space 11. One end of the return air pipe 60 is connected to the air film space 11, and the other end is connected to the hot air circulation component 20. That is, the air film 10, the return air pipe 60, the hot air circulation component 20, the humidity control component 30, and the air supply pipe 50 are connected in sequence. The high-temperature gas output by the hot air circulation component 20 drives the water vapor generated by the humidity control component 30 to be conveyed into the air film space 11 through the air supply pipe 50.

[0055] In this embodiment, the sensor 40 is connected to the side portion 14d. The sensor 40 is an integrated humidity and temperature sensor, which is used to monitor the temperature and humidity in the air film space 11 in real time, and output a temperature detection value and a humidity detection value. For different electrical devices, it is necessary to simulate environments with different temperatures and humidities during damp heat pretreatment, and it is necessary to keep the air film space 11 at a specific temperature and a specific humidity continuously. Therefore, the real-time monitoring of temperature and humidity can be realized through the sensor 40.

[0056] The sensor 40 is electrically connected to the hot air circulation component 20 and the humidity control component 30 respectively. The temperature detection value output by the sensor 40 is used to feedback and adjust the working parameters of the hot air circulation component 20, and the humidity detection value output by the sensor 40 is used to feedback and adjust the working parameters of the humidity control component 30.

[0057] For example, when the temperature detection value transmitted back by the sensor 40 is lower than the preset temperature value, the heating power of the hot air circulation component 20 is triggered, so that the hot air circulation component 20 generates gas with a higher temperature and transports it into the air film space 11 to increase the temperature in the air film space 11 until the temperature in the air film space 11 reaches the preset temperature value and the hot air circulation component 2 stops working. For example, when the humidity detection value transmitted back by the sensor 40 is lower than the preset humidity value, the humidity control component 30 is triggered to start releasing water molecules to increase the humidity in the air film space 11 until the humidity in the air film space 11 reaches the preset humidity value and the humidity control component 30 stops working.

[0058] In at least one embodiment of the present application, the damp heat pretreatment device 1 may further include a control unit (not shown in the figure). The control unit is electrically connected to the hot air circulation component 20, the humidity control component 30 and the sensor 40 respectively, and is used to feedback and adjust the working parameters of the hot air circulation component 20 and the humidity control component 30 according to the temperature data and humidity data transmitted back by the sensor 40.

[0059] In at least one embodiment of the present application, the control unit may be an independent circuit board or a control chip, such as a circuit board or a control chip integrated in the hot air circulation component 20, the humidity control component 30 or the sensor. In at least one embodiment of the present application, the control unit may be a remotely connected intelligent terminal, such as a computer.

[0060] In at least one embodiment of the present application, the damp heat pretreatment device 1 may include an independent temperature sensor and humidity sensor.

[0061] In this embodiment, the alarm 70 is fixedly connected to the hot air circulation component 20 and is electrically connected to the sensor 40 or the control unit, and is used to emit light and / or sound a siren to remind the detection personnel when the temperature data and / or humidity data exceed the preset value. In other embodiments of the present application, the alarm 70 may be set at any other obvious position to emit light and / or sound a siren to remind.

[0062] The damp-state pretreatment device 1 according to the embodiment of the present application can realize automatic feedback regulation of the temperature in the air film space 11 by setting the sensor 40 to monitor the temperature and humidity in the air film space 11 in real time, which is beneficial to maintaining the stability of the environmental parameters in the air film space 11 and reducing manual operation.

[0063] The following is an introduction to the usage method of the above damp-state pretreatment device 1:

[0064] (1) Assemble the air film 10, the hot air circulation component 20, the humidity control component 30, the sensor 40, the air supply pipe 50, the return air pipe 60 and the alarm 70 to build the air film space 11;

[0065] (2) Open the locking structure 141, put the electrical equipment to be tested into the air film space 11, and close the locking structure 141 to seal the air film space 11;

[0066] (3) Set the preset temperature value and the preset humidity value;

[0067] (4) The sensor 40 works to continuously monitor the temperature and humidity in the air film space 11 to feedback and control the operation of the hot air circulation component 20 and the humidity control component 30; among them, the dew point temperature curve at different humidities is calculated according to the function of the saturated vapor pressure, and based on this dew point temperature curve, the temperature and humidity in the air film space 11 are feedback-regulated according to the data detected by the sensor 40 to avoid the problem that moisture condenses on the electrical equipment due to the too low temperature of the electrical equipment itself during the process of increasing the humidity in the air film space 11;

[0068] (5) When the sensor 40 detects that the air film space 11 reaches the preset temperature value and the preset humidity value, the hot air circulation component 20 and the humidity control component 30 stop working;

[0069] (6) Keep the electrical equipment to be tested in the air film space 11 for a preset duration to make the equipment to be tested fully adapt to the high-temperature and high-humidity environment; during this period, the sensor 40 continuously monitors the temperature and humidity in the air film space 11, and when the temperature and humidity drop below the preset temperature value and the preset humidity value, it triggers the hot air circulation component 20 and the humidity control component 30 to work until it stops working again when it reaches the preset temperature value and the preset humidity value;

[0070] (7) After the electrical equipment to be tested has been in the air film space 11 for a preset duration, the tester opens the locking structure 141 and enters the air film space 11 to perform a withstand voltage test on the electrical equipment;

[0071] (8) Wait for the electrical equipment to return to room temperature, perform a function test on the electrical equipment, and record the environmental parameters, equipment status and safety regulations test results during the damp-state pretreatment process.

[0072] Traditional damp heat treatment uses an environmental test chamber or a thermo-hygrostat chamber. The chamber body of the test chamber is usually made of steel plates or stainless steel with heat-insulating materials sandwiched in the middle, and a microcomputer temperature and humidity controller is adopted. The adjustable upper and lower temperature limits have a relatively large setting range, generally -40 to 150 °C, resulting in extremely high requirements for the heat resistance and sealing performance of the chamber wall, and increasing the manufacturing cost of the chamber body. The temperature range requirements for safety standard damp heat pretreatment are generally 25 °C and 40 °C. The large floor area, high price, and redundant functions of the test chamber have become the main factors restricting the damp heat pretreatment in the laboratory. In addition, the electrical standard requires that the electrical test be carried out immediately after the damp heat treatment, and the equipment entering and leaving the environmental test chamber cannot meet the requirements of the standard for the detection time limit.

[0073] In at least one embodiment of the present application, the damp heat pretreatment device 1 is used for safety testing of the gene sequencer DNBSEQ-T7. The gene sequencer is relatively large in size and cannot be accommodated in a traditional thermo-hygrostat chamber. Therefore, it is impossible to place the gene sequencer to be tested in a damp heat environment for 48 hours according to the standard requirements using a traditional thermo-hygrostat chamber. However, since the damp heat pretreatment device 1 in the embodiment of the present application adopts a flexible and deformable air film 10, in the use state, the air film 10 can be expanded to form an air film space 11 that can accommodate the gene sequencer. In this way, the gene sequencer can be placed in the damp heat air film space 11 for 48 hours, meeting the standard requirements.

[0074] In this at least one embodiment, according to the safety standard GB 4793.1-2007 applicable to the gene sequencer, conditions such as the target temperature, humidity, and duration are selected. After 1 hour, the temperature in the air film space 11 can rise to 40 °C, and the humidity can rise from 55% to 93%, ensuring that the temperature and humidity in the air film space 11 reach the specified stable state. During the damp heat test process, the temperature data and humidity data are continuously monitored. After the damp heat treatment is completed, the gene sequencer is subjected to a withstand voltage test according to relevant test specifications, and the results meet the test requirements. The damp heat pretreatment device can meet the pre-test treatment requirements for electrical equipment placed in a damp heat environment. In at least one embodiment of the present application, the damp heat pretreatment device 1 may further include a withstand voltage tester. After the gene sequencer is placed in the damp heat air film space 11 for 48 hours, the tester directly enters the air film space 11 and uses the high-voltage probe of the withstand voltage tester to test the electrical equipment.

[0075] Therefore, the damp heat pretreatment device 1 of the present application forms an air film space 11 that accommodates electrical equipment and testers by adopting a low-cost and foldable air film 10, reducing the cost of damp heat pretreatment testing and helping to truly evaluate the insulation performance and reliability of products in a high-temperature and high-humidity environment. On this basis, according to different electrical equipment, the air film 10 can be expanded to different sizes to form air film spaces 11 of different volumes. Therefore, the size of the air film space 11 can be flexibly adjusted according to different sizes of electrical equipment.

[0076] Moreover, the air film 10 has good airtightness and heat preservation performance. After reaching the preset temperature value and preset humidity value for the first time, it can maintain the preset temperature value and preset humidity value for a long time. During this period, the hot air circulation component 20 and the humidity control component 30 do not need to work continuously, and the standby power is low. Therefore, the humid state preprocessing device 1 of the present application is beneficial to energy saving.

[0077] In addition, by setting the inner wall of the top 12 of the humid state preprocessing device 1 of the present application to be arc-shaped or inclined, it can effectively prevent the condensed water from dripping onto the electrical equipment and causing misjudgment during the endurance test. By setting the top 12 to be a double-layer structure, it can further prevent the condensed water from directly dripping onto the electrical equipment.

[0078] Furthermore, the humid state preprocessing device 1 of the embodiment of the present application can form an air film space 11 that allows the inspection personnel to directly enter. Therefore, when performing a withstand voltage test on the electrical equipment, it is not necessary to first remove the electrical equipment from the air film space 11, and the inspection can be carried out in a timely manner, avoiding the detection not meeting the standard requirements due to the decrease in temperature and humidity during the process of the electrical equipment entering and leaving.

[0079] Those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the present application, rather than to limit the present application. As long as within the scope of the substantial spirit of the present application, appropriate changes and variations made to the above embodiments fall within the scope of protection required by the present application.

Claims

1. A tidal pretreatment device, characterized in that: Used for performing moisture pretreatment on electrical equipment; the moisture pretreatment device comprises: An air membrane, which forms a closed air membrane space when in an expanded state, for accommodating the electrical equipment; A hot air circulation component for generating heating gas; a humidity control assembly for generating steam; and An air supply pipe, one end of which is connected to the air film space, and the other end of which is respectively connected to the hot air circulation component and the humidity control component, is used to transport the heating gas and the steam into the air film space so that the temperature and humidity in the air film space reach preset values.

2. The tidal pretreatment device according to claim 1, characterized in that: The humidity control component is connected between the air film and the hot air circulation component, and the heated gas drives the steam to be transported into the air film space through the air supply pipe.

3. The tidal pretreatment device according to claim 1, characterized in that: The air film comprises a top, a bottom and a side portion, the top and the bottom are opposite to each other and spaced apart, and the side portion is connected between the top and the bottom; The top, bottom and side parts are enclosed to form the air film space.

4. The tidal pretreatment device according to claim 3, characterized in that: The inner wall of the top is a curved surface or a sloped surface.

5. The tidal pretreatment device according to claim 3, characterized in that: The top portion includes an outer membrane and an inner membrane which are spaced apart.

6. The tidal pretreatment device according to claim 3, characterized in that: A locking structure is arranged on the side portion, and the air film space can be opened or closed by opening and closing the locking structure.

7. The tidal pretreatment device according to claim 3, characterized in that: An observation window is formed on the side portion, one side of the observation window contacts the air, and the other side contacts the air film space, and an anti-fogging film is formed on the side of the observation window contacting the air film space.

8. The tidal pretreatment device according to claim 3, characterized in that: It also includes a sensor, which is electrically connected to the hot air circulation component and the humidity control component respectively; The sensor is used to detect the temperature detection value and the humidity detection value in the air film space; The temperature detection value is used to feedback and adjust the working parameters of the hot air circulation component, and the humidity detection value is used to feedback and adjust the working parameters of the humidity control component.

9. The tidal pretreatment device according to claim 8, characterized in that: The sensor is fixedly connected to the side portion.

10. The tidal pretreatment device according to claim 8, characterized in that: It also includes an alarm electrically connected to the sensor, which is used to emit light and / or sound a whistle when the detected temperature value and / or the detected humidity value reaches an alarm value.

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