A wet freeze test box and test method

Abstract

The present invention discloses a wet freeze test box and a test method, and relates to the field of wet freeze test boxes, including a wet freeze test box body, wherein a temperature variable structure is arranged inside the wet freeze test box body, a positioning structure is arranged inside the wet freeze test box body, and a ventilation structure is arranged on the top of the wet freeze test box body. The present invention controls the operation of a refrigerator through a control panel by arranging a cold air hood, a connecting pipe, a first cold air pipe, a second cold air pipe, and a third cold air pipe. After the refrigerator is operated, a cold air flow is generated, and the cold air flow enters the three connecting pipes respectively through the cold air hood, and flows out through the first cold air pipe, the second cold air pipe, and the third cold air pipe respectively, so that low-temperature tests are performed on items on three shelves, and the items on the three shelves can be affected by low temperatures at the same time. When two heating devices are in operation, the environment of the items on the shelves is heated at the same time, and the objects can be evenly cooled and heated at the same time, effectively improving the effect of the wet freeze test.

Description

Technical Field

[0001] The invention relates to the field of humidity and freeze test chambers, in particular to a humidity and freeze test chamber and a test method. Background Art

[0002] The humidity and freeze test chamber is used to test the parameters and performance of an object after the temperature environment changes during high temperature, low temperature, alternating humidity and heat or constant tests; or the parameters and performance after the temperature environment changes during constant humidity and heat tests. It is suitable for testing the resistance of products such as electronics, automotive parts, rubber, military industry, aerospace technology and communication equipment to repeated changes in temperature and humidity. The reliability and stability of the product can be judged based on the test results. It is an ideal test equipment for researching, developing and improving product quality. At the same time, the humidity and freeze test chamber is a commonly used equipment in physical and chemical experiments.

[0003] In the existing wet-freeze test chamber used for testing, the positions of the cold air outlet and the hot air outlet are fixed, which makes the temperature distribution inside the test chamber uneven, thereby affecting the wet-freeze test results. Therefore, a wet-freeze test chamber and a test method are urgently needed. Summary of the invention

[0004] The purpose of the present invention is to solve the problems that in the existing wet-freeze test box used for testing, the positions of the cold air outlet and the hot air outlet are fixed, resulting in uneven temperature distribution inside the test box, which in turn affects the results of the wet-freeze test; if the objects to be tested are placed together, the flow of air will be affected, and the temperature distribution will be affected, which will in turn affect the test effect; and the dust-proof net on the ventilation fan of the test box is prone to accumulate dust, and the dust accumulation will affect the air intake rate. A wet-freeze test box and a test method are provided.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a wet-freeze test chamber and a test method, comprising a wet-freeze test chamber main body, a temperature-changing structure is arranged inside the wet-freeze test chamber main body, a positioning structure is arranged on the inner side of the wet-freeze test chamber main body, and a ventilation structure is arranged on the top of the wet-freeze test chamber main body.

[0006] The temperature-changing structure includes a refrigerator, an end of the refrigerator is connected to a cold air hood, a connecting pipe is connected to the left side of the cold air hood, a first cold air pipe is installed on the left side of the connecting pipe, a second cold air pipe is arranged below the first cold air pipe, a third cold air pipe is arranged below the second cold air pipe, and heating equipment is installed on both sides of the second cold air pipe.

[0007] The positioning structure includes a placement rack, a first card slot is opened on the inner side of the placement rack, and a vertical plate is clamped on the inner side of the placement rack, a horizontal plate is arranged on the right side of the vertical plate, a card block is arranged on the outer wall of the horizontal plate, and a second card slot is opened below the first card slot.

[0008] The ventilation structure includes a heat dissipation fan shell, a driving structure is installed inside the heat dissipation fan shell, and a dustproof net is connected to the top of the heat dissipation fan shell, a rotating seat is installed at the top of the driving structure, the outer wall of the rotating seat is connected to fan blades, and a micro cylinder is installed at the top of the rotating seat, a pushing block is provided at the output end of the micro cylinder, a push plate is attached to the front end of the pushing block, a rotating block is fixed to the left side of the push plate, a movable plate is connected to the left side of the rotating block, and a bearing is sleeved on the outer side of the rotating block, and a cleaning brush is connected to the inner wall of the movable plate.

[0009] Preferably, a cabinet door is movably provided at the front end of the humidity and freeze test box body, and a water tank is installed on the outer wall of the humidity and freeze test box body. A control panel is provided on the humidity and freeze test box body, a humidifier is installed on the left side of the water tank, a water pipe is connected to the left side of the humidifier, and a moisture hood is provided on the top of the water pipe.

[0010] Preferably, the positioning structure and the wet-freeze test box body are detachably mounted via a support seat, a water inlet plate is provided at the top of the water tank, the moisture hood penetrates into the interior of the wet-freeze test box body, and the water pipe penetrates into the interior of the water tank.

[0011] Preferably, the refrigerator and the humidity test chamber body are fixedly installed through a mounting frame, the connecting pipe is connected to the cold air hood, the number of the connecting pipes is three, the number of the heating devices is two, and the first cold air pipe, the second cold air pipe and the third cold air pipe are all fixedly connected to the refrigerator through the cold air hood and the connecting pipe.

[0012] Preferably, ventilation holes are provided on the inner side of the placement rack, blocks are provided at the bottom ends of the vertical plate and the first card slot, and magnetic stickers are provided on the outer walls of the vertical plate and the first card slot, and the vertical plate, the first card slot and the placement rack are fixed by adsorption through the magnetic stickers.

[0013] Preferably, the clamping block is clamped and connected with the first clamping slot and the second clamping slot, the vertical plate is clamped and fixed with the first clamping slot via the clamping block, and the horizontal plate is clamped and fixed with the second clamping slot via the clamping block.

[0014] Preferably, the heat dissipation fan housing and the humidity-freeze test chamber body are fixedly mounted via a mounting groove, the driving structure is welded to the inner wall of the heat dissipation fan housing, and the micro cylinder and the rotating seat are fixedly mounted via a mounting seat.

[0015] Preferably, the push plate is welded to the outer wall of the rotating block, the rotating block is rotatably connected to the dustproof net via a bearing, and the cleaning brush is fixedly connected to the movable plate via glue.

[0016] Preferably, the method comprises the following steps: Step 1: Place the items to be tested on the shelf and separate them with vertical and horizontal boards. After separation, close the cabinet door; Step 2: Check the water level in the water tank and the power supply of the equipment before the test; Step 3: Set the test value through the control panel, connect the test hole to electricity, and then perform the wet freeze test.

[0017] Compared with the prior art, the present invention has the following beneficial effects: First, the present invention sets a cold air hood, a connecting pipe, a first cold air pipe, a second cold air pipe and a third cold air pipe, and controls the operation of the refrigerator through a control panel. After the refrigerator is running, a cold air flow is generated, and the cold air flow enters the three connecting pipes through the cold air hood, and flows out through the first cold air pipe, the second cold air pipe and the third cold air pipe respectively, so that the low temperature test is performed on the items on the three shelves, and the items on the three shelves can be affected by the low temperature at the same time. When the two heating devices are in operation, the environment of the items on the shelves is heated at the same time, and the objects can be cooled and heated evenly at the same time, which effectively improves the effect of the wet freeze test.

[0018] Second, the present invention is configured to first take out four vertical boards and three horizontal boards from the inner side of the placement rack, and place the objects to be tested on the three placement racks respectively. After separating gaps according to the sizes of the objects, multiple objects are placed in order, and the vertical boards are fixed by the clamping blocks at the bottom and the first clamping grooves at both ends, or the horizontal boards are fixed by the clamping blocks at the bottom and the second clamping grooves on both sides, so that the objects are divided into three groups on the placement rack, and there are gaps between the three groups, which are convenient for gas flow and temperature conduction, so that the test results are more accurate.

[0019] Third, the present invention controls the operation of the driving structure inside the heat dissipation fan casing during the operation of the wet-freeze test box body by setting up, and the driving structure controls the rotation of the rotating seat and the fan blades, so that the external airflow can be filtered through the dustproof net and then transported to the inside of the wet-freeze test box body to achieve ventilation. After the ventilation fan has been used for a period of time, the micro-cylinder on the rotating seat is controlled to operate. The internal technology of the micro-cylinder is the existing technology. After the micro-cylinder is operated, it drives the output end push block to extend and move up to the right side of the rotating block. When the rotating seat is controlled to rotate, the push block rotates at the same time, and pushes the push plate to rotate, thereby driving the rotating block to rotate under the support of the outer bearing, and driving the outer wall movable plate to move on the dustproof net during rotation, and finally allowing the cleaning brush on the inner wall of the movable plate to clean the dust on the dustproof net to prevent dust clogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the side section structure of the present invention; Figure 4It is a schematic diagram of the positioning structure of the present invention; Figure 5 It is a schematic diagram of a horizontal plate of the present invention; Figure 6 It is a schematic diagram of the ventilation structure of the present invention; Figure 7 For the present invention Figure 6 A is an enlarged schematic diagram; Figure 8 It is a schematic diagram of a movable plate of the present invention; Fig. 9 It is a schematic diagram of a push plate of the present invention.

[0021] In the figure: 1. Wet-freeze test box body; 2. Cabinet door; 3. Temperature change structure; 301. Refrigerator; 302. Cold air cover; 303. Connecting pipe; 304. First cold air pipe; 305. Second cold air pipe; 306. Third cold air pipe; 307. Heating device; 4. Positioning structure; 401. Placement rack; 402. Ventilation hole; 403. Vertical plate; 404. First card slot; 405. Horizontal plate; 406. Card block; 407. 07. Second card slot; 5. Ventilation structure; 501. Cooling fan housing; 502. Driving structure; 503. Rotating seat; 504. Fan blades; 505. Micro cylinder; 506. Push block; 507. Push plate; 508. Rotating block; 509. Bearing; 510. Moisture hood; 511. Cleaning brush; 512. Dustproof net; 6. Control panel; 7. Water tank; 8. Humidifier; 9. Water pipe; 10. Moisture hood. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-3A wet freeze test box and a test method, comprising a wet freeze test box body 1, a temperature variable structure 3 is arranged inside the wet freeze test box body 1, and a positioning structure 4 is arranged on the inner side of the wet freeze test box body 1, a ventilation structure 5 is arranged on the top of the wet freeze test box body 1, the temperature variable structure 3 comprises a refrigerator 301, an end of the refrigerator 301 is connected to a cold air cover 302, a left side of the cold air cover 302 is connected to a connecting pipe 303, a first cold air pipe 304 is installed on the left side of the connecting pipe 303, and a second cold air pipe 304 is arranged below the first cold air pipe 304. 5, a third cold air pipe 306 is arranged below the second cold air pipe 305, and heating devices 307 are installed on both sides of the second cold air pipe 305, a cabinet door 2 is movably arranged at the front end of the wet-freeze test box body 1, and a water tank 7 is installed on the outer wall of the wet-freeze test box body 1, a control panel 6 is arranged on the wet-freeze test box body 1, a humidifier 8 is installed on the left side of the water tank 7, a water pipe 9 is connected to the left side of the humidifier 8, a moisture cover 10 is arranged on the top of the water pipe 9, the positioning structure 4 and the wet-freeze test box body 1 are detachably installed through the support seat, and the top of the water tank 7 is arranged There is a water inlet plate, the moisture cover 10 penetrates into the interior of the wet freeze test box body 1, the water pipe 9 penetrates into the interior of the water tank 7, the refrigerator 301 and the wet freeze test box body 1 are fixedly installed through the mounting frame, the connecting pipe 303 is connected with the cold air cover 302, the number of connecting pipes 303 is three, the number of heating devices 307 is two, the first cold air pipe 304, the second cold air pipe 305 and the third cold air pipe 306 are fixedly connected to the refrigerator 301 through the cold air cover 302 and the connecting pipe 303, and the operation of the refrigerator 301 is controlled by the control panel 6 After the refrigerator 301 is running, a cold air flow is generated. The cold air flow enters the three connecting pipes 303 through the cold air hood 302, and flows out through the first cold air pipe 304, the second cold air pipe 305, and the third cold air pipe 306 respectively, so as to perform a low-temperature test on the items on the three placement racks 401, so that the items on the three placement racks 401 can be affected by the low temperature at the same time, and when the two heating devices 307 are running, the environment of the items on the placement racks 401 is heated at the same time, and the objects can be evenly cooled and heated at the same time, which effectively improves the effect of the wet freeze test.

[0024] See also Figure 4-5A wet freeze test box and a test method, wherein the positioning structure 4 comprises a placement rack 401, a first card slot 404 is provided on the inner side of the placement rack 401, and a vertical plate 403 is engaged with the inner side of the placement rack 401, a horizontal plate 405 is provided on the right side of the vertical plate 403, a card block 406 is provided on the outer wall of the horizontal plate 405, a second card slot 407 is provided below the first card slot 404, a ventilation hole 402 is provided on the inner side of the placement rack 401, a card block 406 is provided at the bottom ends of the vertical plate 403 and the first card slot 404, and a magnetic sticker is provided on the outer wall of the vertical plate 403 and the first card slot 404, the vertical plate 403, the first card slot 404 and the placement rack 401 are fixed by adsorption through the magnetic sticker, and the card block 406 is engaged and connected with the first card slot 404 and the second card slot 407 , the vertical plate 403 is fixed to the first slot 404 by the block 406, and the horizontal plate 405 is fixed to the second slot 407 by the block 406. First, take out the four vertical plates 403 and the three horizontal plates 405 from the inner side of the placement rack 401, and place the objects to be tested on the three placement racks 401 respectively. After separating the gaps according to the sizes of the objects, multiple objects are placed in order, and the vertical plate 403 is fixed by the block 406 at the bottom and the first slots 404 at both ends, or the horizontal plate 405 is fixed by the block 406 at the bottom and the second slots 407 on both sides, so that the objects are divided into three groups on the placement rack 401, and there are gaps between the three groups, which are convenient for gas flow and temperature conduction, so that the test results are more accurate.

[0025] See also Figure 6-9A wet freeze test box and a test method, wherein the ventilation structure 5 comprises a heat dissipation fan housing 501, a driving structure 502 is installed inside the heat dissipation fan housing 501, and a dustproof net 512 is connected to the top of the heat dissipation fan housing 501, a rotating seat 503 is installed at the top of the driving structure 502, a fan blade 504 is connected to the outer wall of the rotating seat 503, and a micro cylinder 505 is installed at the top of the rotating seat 503, and a push block 506 is provided at the output end of the micro cylinder 505, and a push plate 507 is attached to the front end of the push block 506, and the push plate A rotating block 508 is fixed on the left side of 507, a movable plate 510 is connected to the left side of the rotating block 508, and a bearing 509 is sleeved on the outer side of the rotating block 508. A cleaning brush 511 is connected to the inner wall of the movable plate 510. The cooling fan housing 501 and the wet freeze test chamber body 1 are fixedly installed through the installation groove, the driving structure 502 is welded to the inner wall of the cooling fan housing 501, the micro cylinder 505 and the rotating seat 503 are fixedly installed through the mounting seat, the push plate 507 is welded to the outer wall of the rotating block 508, and the rotating block 508 is connected to the dustproof net 511. 2 is rotatably connected through the bearing 509, and the cleaning brush 511 is fixedly connected to the movable plate 510 by glue. During the operation of the humidity and freezing test box body 1, the driving structure 502 inside the heat dissipation fan housing 501 is controlled to operate, and the driving structure 502 controls the rotating seat 503 and the fan blades 504 to rotate, so that the external airflow can be filtered through the dustproof net 512 and then transported to the inside of the humidity and freezing test box body 1 to achieve ventilation. After the ventilation fan is used for a period of time, the micro cylinder 505 on the rotating seat 503 is controlled to operate, and the micro cylinder 504 is controlled to rotate. The internal technology is the existing technology. After the micro cylinder 505 is running, it drives the output end push block 506 to extend and move up to the right side of the rotating block 508. When the rotating seat 503 is controlled to rotate, the push block 506 rotates at the same time and drives the push plate 507 to rotate, thereby driving the rotating block 508 to rotate under the support of the outer bearing 509. When rotating, the outer wall movable plate 510 is driven to move on the dustproof net 512, and finally the cleaning brush 511 on the inner wall of the movable plate 510 cleans the dust on the dustproof net 512 to prevent dust clogging.

[0026] A test method for a humidity and freeze test chamber comprises the following steps: Step 1: Place the items to be tested on the placement rack 401 and separate them by the vertical plate 403 and the horizontal plate 405. After separation, close the cabinet door 2; Step 2: Check the water level of the water tank 7 and the power supply of the equipment before the test; Step 3: Set the test value through the control panel 6, connect the test hole to electricity, and then perform the wet freeze test.

[0027] Working principle: When the present invention is used, firstly, four vertical plates 403 and three horizontal plates 405 are taken out from the inner side of the placement rack 401, and the objects to be tested are placed on the three placement racks 401 respectively. After the gaps are separated according to the sizes of the objects, multiple objects are placed in order, and the vertical plates 403 are fixed by the clamping blocks 406 at the bottom and the first clamping grooves 404 at both ends, or the horizontal plates 405 are fixed by the clamping blocks 406 at the bottom and the second clamping grooves 407 at both sides, so that the objects are separated into three groups on the placement rack 401, and there are gaps between the three groups, which is convenient for gas flow and temperature conduction, so that the test results are more accurate. After the items are placed, close the cabinet door 2. Before the test, check the water level of the water tank 7 and the power supply of the equipment to ensure that the main body 1 of the wet freeze test box is operating normally. The operation of the refrigerator 301 can be controlled by the control panel 6. After the refrigerator 301 is running, a cold air flow is generated. The cold air flow enters the three connecting pipes 303 through the cold air cover 302, and flows out through the first cold air pipe 304, the second cold air pipe 305, and the third cold air pipe 306 respectively, so as to perform a low temperature test on the items on the three placement racks 401. The items on the three placement racks 401 can be affected by the low temperature at the same time, and when the two heating devices 307 are running, the items on the placement racks 401 are heated at the same time. The objects are heated in the environment, and the objects can be cooled and heated evenly at the same time, which effectively improves the effect of the wet freeze test. The humidifier 8 on the water tank 7 can be controlled to operate, and the water is atomized. The water mist is transported to the moisture cover 10 through the water pipe 9, so that the moisture enters the interior of the wet freeze test box body 1, creating a humid environment. During the operation of the wet freeze test box body 1, the driving structure 502 inside the heat dissipation fan housing 501 is controlled to operate. The driving structure 502 controls the rotation of the rotating seat 503 and the fan blades 504 to rotate, and the external airflow can be filtered through the dustproof net 512 and then transported to the interior of the wet freeze test box body 1 to achieve ventilation. The ventilation fan is used After a period of time, the micro cylinder 505 on the rotating seat 503 is controlled to operate. The internal technology of the micro cylinder 505 is the existing technology. After the micro cylinder 505 is running, it drives the output end push block 506 to extend and move up to the right side of the rotating block 508. When the rotating seat 503 is controlled to rotate, the push block 506 rotates at the same time, and pushes the push plate 507 to rotate, thereby driving the rotating block 508 to rotate under the support of the outer bearing 509. When rotating, the outer wall movable plate 510 is driven to move on the dustproof net 512, and finally the cleaning brush 511 on the inner wall of the movable plate 510 cleans the dust on the dustproof net 512 to prevent dust clogging.

[0028] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A humidity and freeze test chamber and a test method, comprising a humidity and freeze test chamber body (1), characterized in that: A temperature changing structure (3) is arranged inside the main body (1) of the humidity and frost test box, a positioning structure (4) is arranged on the inner side of the main body (1) of the humidity and frost test box, and a ventilation structure (5) is arranged on the top of the main body (1) of the humidity and frost test box; The temperature-changing structure (3) comprises a refrigerator (301), an end of the refrigerator (301) is connected to a cold air cover (302), a left side of the cold air cover (302) is connected to a connecting pipe (303), a first cold air pipe (304) is installed on the left side of the connecting pipe (303), a second cold air pipe (305) is arranged below the first cold air pipe (304), a third cold air pipe (306) is arranged below the second cold air pipe (305), and heating devices (307) are installed on both sides of the second cold air pipe (305); The positioning structure (4) comprises a placement rack (401), a first card slot (404) is provided on the inner side of the placement rack (401), a vertical plate (403) is engaged on the inner side of the placement rack (401), a horizontal plate (405) is provided on the right side of the vertical plate (403), a card block (406) is provided on the outer wall of the horizontal plate (405), and a second card slot (407) is provided below the first card slot (404); The ventilation structure (5) comprises a heat dissipation fan housing (501), a driving structure (502) is installed inside the heat dissipation fan housing (501), and a dustproof net (512) is connected to the top of the heat dissipation fan housing (501), a rotating seat (503) is installed at the top of the driving structure (502), a fan blade (504) is connected to the outer wall of the rotating seat (503), and a micro cylinder (505) is installed at the top of the rotating seat (503), a pushing block (506) is arranged at the output end of the micro cylinder (505), a push plate (507) is attached to the front end of the pushing block (506), a rotating block (508) is fixed to the left side of the push plate (507), a movable plate (510) is connected to the left side of the rotating block (508), a bearing (509) is sleeved on the outer side of the rotating block (508), and a cleaning brush (511) is connected to the inner wall of the movable plate (510).

2. A humidity freeze test chamber and test method according to claim 1, characterized in that: The front end of the humidity and frost test box body (1) is movably provided with a cabinet door (2), and the outer wall of the humidity and frost test box body (1) is provided with a water tank (7), the humidity and frost test box body (1) is provided with a control panel (6), a humidifier (8) is installed on the left side of the water tank (7), the left side of the humidifier (8) is connected to a water pipe (9), and a moisture cover (10) is provided on the top of the water pipe (9).

3. A humidity freeze test chamber and test method according to claim 2, characterized in that: The positioning structure (4) and the humidity and freezing test box body (1) are detachably mounted via a support seat, a water inlet plate is provided at the top of the water tank (7), the moisture cover (10) penetrates into the interior of the humidity and freezing test box body (1), and the water pipe (9) penetrates into the interior of the water tank (7).

4. A humidity freeze test chamber and test method according to claim 1, characterized in that: The refrigerator (301) is fixedly mounted to the humidity and freeze test chamber body (1) via a mounting frame, the connecting pipe (303) is connected to the cold air cover (302), the number of the connecting pipes (303) is three, the number of the heating devices (307) is two, and the first cold air pipe (304), the second cold air pipe (305) and the third cold air pipe (306) are fixedly connected to the refrigerator (301) via the cold air cover (302) and the connecting pipe (303).

5. A humidity freeze test chamber and test method according to claim 1, characterized in that: A ventilation hole (402) is provided on the inner side of the placement rack (401); a clamping block (406) is provided at the bottom end of the vertical plate (403) and the first clamping slot (404); and a magnetic sticker is provided on the outer wall of the vertical plate (403) and the first clamping slot (404); the vertical plate (403), the first clamping slot (404) and the placement rack (401) are fixed by adsorption via the magnetic sticker.

6. A humidity freeze test chamber and test method according to claim 1, characterized in that: The clamping block (406) is clamped and connected with the first clamping slot (404) and the second clamping slot (407); the vertical plate (403) is clamped and fixed with the first clamping slot (404) via the clamping block (406); and the horizontal plate (405) is clamped and fixed with the second clamping slot (407) via the clamping block (406).

7. A humidity freeze test chamber and test method according to claim 1, characterized in that: The heat dissipation fan housing (501) and the humidity and freezing test chamber body (1) are fixedly mounted via a mounting groove, the driving structure (502) is welded to the inner wall of the heat dissipation fan housing (501), and the micro cylinder (505) and the rotating seat (503) are fixedly mounted via a mounting seat.

8. A humidity freeze test chamber and test method according to claim 1, characterized in that: The push plate (507) is welded to the outer wall of the rotating block (508); the rotating block (508) is rotatably connected to the dustproof net (512) via a bearing (509); and the cleaning brush (511) is fixedly connected to the movable plate (510) via glue.

9. The test method of a humidity freeze test chamber according to claim 1, characterized in that: The steps include: Step 1: Place the items to be tested on the placement rack (401) and separate them using the vertical board (403) and the horizontal board (405). After separation, close the cabinet door (2); Step 2: Check the water level in the water tank (7) and the power supply of the equipment before the test; Step 3: Set the test value through the control panel (6), connect the test hole to electricity, and then conduct the wet freeze test.

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