A damp heat test chamber

Abstract

The utility model belongs to impact test box technical field discloses a kind of damp heat impact test chamber, including low temperature room, high temperature damp heat room and sample carrier car, low temperature room and high temperature damp heat room are arranged side by side, and connecting passage for sample carrier car is equipped between low temperature room and high temperature damp heat room, sample carrier car can move back and forth in low temperature room and high temperature damp heat room by connecting passage, the limiting baffle that can block connecting passage is respectively installed in the both ends of sample carrier car, track wheel is installed below sample carrier car, square steel track for supporting track wheel is installed in low temperature room and high temperature damp heat room, the moving mechanism for driving sample carrier car reciprocating motion on square steel track is installed in one end of low temperature room or high temperature damp heat room, and steam humidifier is connected on high temperature damp heat room.The utility model can realize the quick switching of high temperature damp heat environment and low temperature environment, cooperate limiting baffle, can separate high temperature damp heat room and low temperature room.

Description

Technical Field

[0001] This utility model belongs to the technical field of impact test chambers, specifically relating to a damp heat impact test chamber. Background Technology

[0002] An impact test chamber is a device used to test the tolerance of materials, components, and products to rapid temperature changes. It is widely used in electronics, electrical engineering, automotive, aerospace, and other fields. Existing impact test chambers generally include two-chamber types that switch between high and low temperature chambers via a basket, three-chamber types that switch between high and low temperature impacts via a damper, and three-chamber types with a blower system that handles high-temperature, room-temperature, and low-temperature impacts. These are primarily used to meet temperature shock tests within a certain range (-70℃~150℃). However, to meet the environmental durability testing standards for automotive electrical and electronic components (GMW3172), the equipment needs to meet humidity (10%~98%RH) variation requirements within a certain range, in addition to high and low temperature impact requirements. Therefore, improvements to existing impact test chambers are necessary. Utility Model Content

[0003] The purpose of this invention is to solve the problems in the background technology and provide a damp heat shock test chamber that can simultaneously meet the impact test requirements of temperature and humidity.

[0004] The objective of this utility model is achieved through the following technical solution: A damp heat shock test chamber includes a low-temperature chamber, a high-temperature damp heat chamber, and a sample carriage. The low-temperature chamber and the high-temperature damp heat chamber are arranged side by side, and a connecting channel is provided between the low-temperature chamber and the high-temperature damp heat chamber for the sample carriage to pass through. The sample carriage can move back and forth between the low-temperature chamber and the high-temperature damp heat chamber through the connecting channel. Limiting baffles that can block the connecting channel are installed at both ends of the sample carriage. The limiting baffles are equipped with sealing devices. Track wheels are installed under the sample carriage. Square steel tracks supporting the movement of the track wheels are installed in the low-temperature chamber and the high-temperature damp heat chamber. A moving mechanism that drives the sample carriage to reciprocate on the square steel tracks is installed on one side of the high-temperature damp heat chamber. A steam humidifier is connected to the high-temperature damp heat chamber.

[0005] The low-temperature chamber is equipped with a low-temperature circulating air duct, which contains a cold storage unit, a refrigeration evaporator, a defrosting device, and a low-temperature resistant long-shaft fan. Drainage outlets are provided at the bottom of the low-temperature chamber and the low-temperature circulating air duct.

[0006] The high-temperature and humid heat chamber is equipped with a high-temperature circulating air duct, which contains a heater, a heat accumulator, a dehumidifier, and a high-temperature resistant long-shaft fan. The steam humidifier is connected to the high-temperature circulating air duct, and the bottom of the high-temperature and humid heat chamber and the high-temperature circulating air duct are equipped with drain outlets.

[0007] The moving mechanism is a cylinder or a chain conveyor.

[0008] The beneficial effects of the damp heat shock test chamber provided by this utility model are: (1) By connecting a steam humidifier to the high temperature and humidity chamber, the impact test chamber also has a humidity impact function. At the same time, by driving the sample carrier through the moving mechanism, the high temperature and humidity environment and the low temperature environment can be quickly switched. With the limit baffle with sealing device, the high temperature and humidity chamber and the low temperature chamber can be separated to avoid mutual influence between the high temperature and humidity environment and the low temperature environment. (2) By setting up a drain outlet, the condensate and defrost water of the evaporator can be discharged in time, avoiding water accumulation that could affect the impact test environment. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a structural schematic diagram provided for an embodiment of the present utility model.

[0011] Figure 2 A schematic diagram of the structure of the low-temperature greenhouse provided in an embodiment of this utility model.

[0012] Figure 3 This is a schematic diagram of the structure of the high-temperature and humid heat chamber provided in an embodiment of the present invention.

[0013] The diagram is labeled as follows: 1. Low-temperature chamber; 11. Low-temperature circulating air duct; 12. Cold accumulator; 13. Refrigeration evaporator; 14. Defrosting device; 15. Low-temperature resistant long-shaft fan; 16. Refrigeration unit; 2. High-temperature humidity chamber; 21. High-temperature circulating air duct; 22. Heater; 23. Dehumidifier; 24. High-temperature resistant long-shaft fan; 25. Heat accumulator; 3. Sample carrier; 4. Connecting channel; 5. Limiting baffle; 6. Track wheel; 7. Square steel track; 8. Drain outlet; 9. Moving mechanism; 10. Steam humidifier. Detailed Implementation

[0014] like Figures 1-3As shown, the damp heat shock test chamber provided in this embodiment includes a low-temperature chamber 1, a high-temperature damp heat chamber 2, a sample carrier 3, and a steam humidifier 10. The low-temperature chamber 1 and the high-temperature damp heat chamber 2 are arranged side by side. The low-temperature chamber 1 is equipped with a low-temperature circulating air duct 11. The low-temperature circulating air duct 11 is equipped with a cold accumulator 12, a refrigeration evaporator 13, a defrosting device 14, and a low-temperature resistant long-shaft fan 15. The low-temperature circulating air duct 11 cools the chamber through the cold accumulator 12 and the refrigeration evaporator 13. The refrigeration evaporator 13 is connected to a refrigeration unit 16, which is externally installed. The low-temperature resistant long-shaft fan 15 is used to make the temperature in the low-temperature chamber 1 uniform. The low-temperature circulating air duct 11 and the low-temperature chamber 1 are provided with a drain outlet 8 at the bottom. The drain outlet 8 in the low-temperature chamber 1 is used to drain the condensate and overflow water generated by the defrosting device in the low-temperature chamber 1. The high-temperature and humid heat chamber 2 is provided with a high-temperature circulating air duct 21. The high-temperature circulating air duct 21 is equipped with a heater 22, a heat storage device 25, a dehumidifier 23 and a high-temperature resistant long-shaft fan 24. The steam humidifier 10 is connected to the high-temperature circulating air duct 21. The steam humidifier 10 is an external type. The high-temperature and humid heat chamber 2 and the high-temperature circulating air duct 21 are provided with a drain outlet 8 at the bottom. The drain outlet 8 in the high-temperature and humid heat chamber 2 is used to drain the condensate and water generated by the dehumidifier 23 in the high-temperature and humid heat chamber 2. A connecting channel 4 is provided between the low-temperature chamber 1 and the high-temperature and humidity chamber 2 for the sample carrier 3 to pass through. The sample carrier 3 can switch back and forth between the low-temperature chamber 1 and the high-temperature and humidity chamber 2 through the connecting channel 4. Limiting baffles 5 are installed at both ends of the sample carrier 3 to block the connecting channel 4. The limiting baffles 5 are equipped with sealing devices, such as sealing strips, sealing rings, or sealing plates, which can isolate temperature. The limiting baffles 5 are used to separate the low-temperature chamber 1 and the high-temperature and humidity chamber 2 to prevent the working environments of the two from being interconnected. Track wheels 6 are installed under the sample carrier 3. Square steel rails 7 that support the movement of the track wheels 6 are installed in the low-temperature chamber 1 and the high-temperature and humidity chamber 2. A moving mechanism 9 is installed on one side of the high-temperature and humidity chamber 2 to drive the sample carrier 3 to reciprocate on the square steel rails 7. The moving mechanism 9 is a cylinder or a chain conveyor. The chain conveyor also needs to be used with a reducer. The figure shows a cylinder.

[0015] The method of using this utility model is as follows: Before use, place the sample to be tested on the sample carrier 3. Control the high-temperature and humidity chamber 2 to work alone to create a high-temperature environment; control the high-temperature and humidity chamber 2 and the steam humidifier 10 to work together to create a high-temperature and humidity environment; control the low-temperature chamber 1 to work together to create a low-temperature environment.

[0016] In use, the sample carrier 3 is controlled by the moving device 9 to move on the square steel track 7, so that the sample carrier 3 can enter the high temperature and humidity chamber 2 or the low temperature chamber 1 to conduct temperature and humidity shock tests. Under the action of the limiting baffle 5, after the sample carrier 3 moves into place, it can separate the high temperature and humidity environment and the low temperature environment.

[0017] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications and substitutions based on the technical solutions and inventive concepts provided by the present invention should be covered within the scope of protection of the present invention.

Claims

1. A damp heat shock test chamber, comprising a low-temperature chamber (1), a high-temperature damp heat chamber (2), and a sample carrier (3), characterized in that: The low-temperature chamber (1) and the high-temperature humidity chamber (2) are arranged side by side, and a connecting channel (4) is provided between the low-temperature chamber (1) and the high-temperature humidity chamber (2) for the sample carrier (3) to pass through. The sample carrier (3) can move back and forth between the low-temperature chamber (1) and the high-temperature humidity chamber (2) through the connecting channel (4). Limiting baffles (5) that can block the connecting channel (4) are installed at both ends of the sample carrier (3). A sealing device is provided on the limiting baffles (5). Track wheels (6) are installed under the sample carrier (3). Square steel rails (7) that support the movement of the track wheels (6) are installed in the low-temperature chamber (1) and the high-temperature humidity chamber (2). A moving mechanism (9) that drives the sample carrier (3) to move back and forth on the square steel rails (7) is installed on one side of the high-temperature humidity chamber (2). A steam humidifier (10) is connected to the high-temperature humidity chamber (2).

2. The damp heat shock test chamber according to claim 1, characterized in that: The low-temperature chamber (1) is provided with a low-temperature circulating air duct (11), and a cold storage device (12), a refrigeration evaporator (13), a defrosting device (14) and a low-temperature resistant long-shaft fan (15) are installed in the low-temperature circulating air duct (11). Drainage outlets (8) are provided at the bottom of the low-temperature chamber (1) and the low-temperature circulating air duct (11).

3. The damp heat shock test chamber according to claim 1, characterized in that: The high temperature and humidity chamber (2) is provided with a high temperature circulating air duct (21). The high temperature circulating air duct (21) is equipped with a heater (22), a heat accumulator (25), a dehumidifier (23) and a high temperature resistant long shaft fan (24). The steam humidifier (10) is connected to the high temperature circulating air duct (21). The bottom of the high temperature and humidity chamber (2) and the high temperature circulating air duct (21) are provided with a drain outlet (8).

4. The damp heat shock test chamber according to claim 1, characterized in that: The moving mechanism (9) is a cylinder or a chain conveyor.

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