A four-chamber temperature shock test chamber

Abstract

The utility model belongs to impact test box technical field discloses a four cabin formula temperature impact test box, including heat preservation box, heating system, refrigeration system and steam humidifier, is equipped with two rows of test spaces on heat preservation box, each row of test spaces is equipped with low temperature room, high temperature room, sample carrier and moving mechanism, low temperature room is connected with refrigeration system, high temperature room is connected with heating system, steam humidifier is connected with high temperature room, and connecting passage is equipped between low temperature room and high temperature room, and sample carrier can move back and forth in low temperature room and high temperature room through connecting passage, the both ends of sample carrier are installed with the spacing baffle of blocking connecting passage respectively, and the track wheel is installed under sample carrier, and the square steel track of supporting track wheel is installed in low temperature room and high temperature room, and the moving mechanism that drives sample carrier reciprocating motion on square steel track is installed on one side of high temperature room. The utility model can realize various types of impact test.

Description

Technical Field

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

[0002] Impact test chambers are devices used to test the tolerance of materials, components, and products to rapid temperature changes. They are 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 for high-temperature-normal-temperature-low-temperature impacts. These are mainly used to meet temperature shock tests within a certain range (-70℃~150℃). However, to meet the standards for environmental durability testing of automotive electrical and electronic components (GMW3172) and the standards for experimental environment testing methods for military equipment (GJB150.5A), it is necessary to meet the experimental requirements for high-temperature high-speed-low-temperature impacts, as well as ultra-high-temperature-low-temperature impact tests with a maximum temperature of 250℃, in addition to high and low temperature impacts. Therefore, improvements to existing impact test chambers are required. Utility Model Content

[0003] The purpose of this invention is to solve the problems in the background technology and provide a four-chamber temperature shock test chamber. This test chamber has four chambers, which can not only meet the experimental requirements of ultra-high temperature and low temperature, but also meet the experimental requirements of high temperature and high humidity and low temperature.

[0004] The objective of this utility model is achieved through the following technical solution: A four-chamber temperature shock test chamber includes an insulated chamber, a heating system, a cooling system, and a steam humidifier. The insulated chamber has two rows of test spaces, each row of which includes a low-temperature chamber, a high-temperature chamber, a sample carriage, and a moving mechanism. A connecting channel is provided between the low-temperature chamber and the high-temperature 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 chamber through the connecting channel. Limiting baffles that can block the connecting channel are installed at both ends of the sample carriage, and the limiting baffles are equipped with sealing devices. Track wheels are installed under the sample carriage, and square steel tracks supporting the track wheels are installed in the low-temperature chamber and the high-temperature 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 chamber. The low-temperature chamber is connected to the cooling system, and the high-temperature chamber is connected to the heating system. The steam humidifier is connected between the high-temperature chamber located below and the heating system.

[0005] The refrigeration system includes a low-temperature circulating air duct, a cold storage unit, a refrigeration evaporator, a defrosting device, and a long-shaft circulating fan. The two ends of the low-temperature circulating air duct are connected to the rear side of the low-temperature chamber. The cold storage unit, the refrigeration evaporator, the defrosting device, and the long-shaft circulating fan are installed inside the low-temperature circulating air duct. Drainage outlets are provided at the bottom of the low-temperature circulating air duct and the bottom of the low-temperature chamber.

[0006] The long-shaft circulating fan can be detachably installed on the rear side of the low-temperature circulating air duct.

[0007] The heating system includes a high-temperature circulating air duct, a heat accumulator, a heater, and a high-temperature resistant circulating fan. The two ends of the high-temperature circulating air duct are connected to the rear side of the low-temperature chamber. The heat accumulator, heater, and high-temperature resistant circulating fan are installed inside the high-temperature circulating air duct. Drainage outlets are provided at the bottom of the high-temperature circulating air duct and the bottom of the high-temperature chamber.

[0008] The high-temperature resistant circulating fan can be detachably installed on the rear side of the high-temperature circulating air duct.

[0009] The steam outlet of the steam humidifier is installed in the high-temperature circulating air duct in the direction of the high-temperature circulating fan's air outlet, and a dehumidifying evaporator is installed at the return air end of the high-temperature circulating air duct where the steam humidifier is installed.

[0010] The moving mechanism is a cylinder or a chain conveyor.

[0011] The beneficial effects of the four-chamber temperature shock test chamber provided by this utility model are: (1) By setting up two rows of test spaces, various types of impact tests can be achieved. At the same time, a steam humidifier is connected to the high-temperature chamber in the lower row to avoid the condensate from affecting the status of other low-temperature and high-temperature chambers when it is discharged. (2) The sample carrier is driven by a moving mechanism, which can quickly switch between high temperature and low temperature environments. With the help of the limiting baffle, the high temperature chamber and the low temperature chamber can be separated to avoid mutual influence between the high temperature and low temperature environments. (3) 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

[0012] 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.

[0013] Figure 1 This is a structural schematic diagram provided for an embodiment of the present utility model.

[0014] Figure 2 A schematic diagram of the installation structure of the low-temperature indoor refrigeration system provided in this embodiment of the utility model.

[0015] Figure 3 A schematic diagram of the installation structure of the high-temperature indoor heating system provided in this embodiment of the utility model.

[0016] The diagram is labeled as follows: 1. Insulation box; 11. Low temperature chamber; 12. High temperature chamber; 13. Connecting channel; 14. Sample carrier; 15. Limiting baffle; 16. Track wheel; 17. Square steel track; 18. Moving mechanism; 2. Heating system; 21. High temperature circulating air duct; 22. Heat accumulator; 23. Heater; 24. High temperature resistant circulating fan; 25. Dehumidifying evaporator; 3. Refrigeration system; 31. Low temperature circulating air duct; 32. Cold accumulator; 33. Refrigeration evaporator; 34. Defrosting device; 35. Long shaft circulating fan; 36. Refrigeration unit; 4. Steam humidifier; 5. Drain outlet; 6. Plug. Detailed Implementation

[0017] like Figures 1-3 As shown, the four-chamber temperature shock test chamber provided in this embodiment includes an insulated chamber 1, a heating system 2, a cooling system 3, and a steam humidifier 4. The insulated chamber 1 has two rows of test spaces, each row of test spaces is equipped with a low-temperature chamber 11, a high-temperature chamber 12, a sample carriage 14, and a moving mechanism 18. A connecting channel 13 is provided between the low-temperature chamber 11 and the high-temperature chamber 12 for the sample carriage 14 to pass through. The sample carriage 14 can move back and forth between the low-temperature chamber 11 and the high-temperature chamber 12 through the connecting channel 13. Limiting baffles 15 are installed at both ends of the sample carriage 14 to block the connecting channel 13. The limiting baffles 15 are equipped with... The sealing device is a sealing structure that can isolate temperature, such as a sealing strip, sealing ring, or sealing plate. The limiting baffle 15 is used to separate the low temperature chamber 11 and the high temperature chamber 12 to prevent the working environment of the high temperature chamber 12 and the low temperature chamber 11 from being interconnected. The sample carrier 14 is equipped with rotatable track wheels 16. The low temperature chamber 11 and the high temperature chamber 12 are equipped with square steel rails 17 to support the track wheels 16. The high temperature chamber 12 is equipped with a moving mechanism 18 that drives the sample carrier 14 to reciprocate on the square steel rails 17. The moving mechanism 18 is a cylinder or a chain conveyor. The chain conveyor also needs to be used with a reducer. The figure shows a cylinder.

[0018] The low-temperature chamber 11 is connected to a refrigeration system 3, said refrigeration system 3 comprises a low-temperature circulation air duct 31, a cold storage 32, a refrigeration evaporator 33, a defrosting device 34 and a long-axis circulation fan 35. Both ends of said low-temperature circulation air duct 31 are connected to the rear side of the low-temperature chamber 11, said cold storage 32, refrigeration evaporator 33, defrosting device 34 and long-axis circulation fan 35 are installed inside the low-temperature circulation air duct 31. The refrigeration evaporator 33 is externally connected with a refrigeration unit 36, and the refrigeration unit 36 ensures the normal operation of the refrigeration evaporator 33. Drain outlets 5 are provided at the bottom of the low-temperature circulation air duct 31 and the bottom of the low-temperature chamber 11. Said long-axis circulation fan 35 is detachably installed at the rear side of the low-temperature circulation air duct 31; after the long-axis circulation fan 35 is removed, the refrigeration system 3 is exposed, thereby facilitating maintenance of the refrigeration system 3. In order to reduce cold loss at the installation position of the long-axis circulation fan 35, the exterior of the long-axis circulation fan 35 is wrapped with a plug 6 having a thermal insulation effect.

[0019] The high-temperature chamber 12 is connected to a heating system 2, said heating system 2 comprises a high-temperature circulation air duct 21, a heat storage 22, a heater 23 and a high-temperature-resistant circulation fan 24. Both ends of said high-temperature circulation air duct 21 are connected to the rear side of the low-temperature chamber 11, said heat storage 22, heater 23 and high-temperature-resistant circulation fan 24 are installed inside the high-temperature circulation air duct 21. Drain outlets 5 are provided at the bottom of the high-temperature circulation air duct 21 and the bottom of the high-temperature chamber 12. Said high-temperature-resistant circulation fan 24 is detachably installed at the rear side of the high-temperature circulation air duct 21; after the high-temperature-resistant circulation fan 24 is removed, the heating system 2 is exposed, so as to facilitate maintenance of the heating system 2. In order to reduce heat loss at the installation position of the high-temperature-resistant circulation fan 24, the exterior of the high-temperature-resistant circulation fan 24 is wrapped with a plug 6 having a thermal insulation effect. Said steam humidifier 4 is connected between the lower high-temperature chamber 12 and the heating system 2, and the steam outlet of the steam humidifier 4 is specifically installed in the high-temperature circulation air duct 21 in the air outlet direction of the high-temperature-resistant circulation fan 24. Since the steam humidifier 4 will increase air humidity, in order to prevent excessive humidity from affecting the temperature inside the high-temperature chamber, a dehumidification evaporator 25 is installed at the return air end of the high-temperature circulation air duct 21 where the steam humidifier 4 is installed. The humid and hot air回流 from the high-temperature chamber 12 to the high-temperature circulation air duct 21 first passes through the dehumidification evaporator 25 to remove moisture, and then circulates again. In order to ensure the normal operation of the dehumidification evaporator 25, the dehumidification evaporator 25 is connected to the refrigeration unit 36, and the refrigeration unit 36 ensures the normal operation of the dehumidification evaporator 25.

[0020] Under the action of the refrigeration system 3, the heating system 2 and the high-temperature steam humidifier 4, the two rows of test spaces form, in a "grid" (Chinese "tian") shape distribution from top to bottom and from left to right: a low-temperature impact test space, a high-temperature impact test space, a low-temperature impact test space, and a high-temperature and high-humidity impact test space.

[0021] The application method of the present utility model is: Before use, place the sample to be tested on the sample carrier 14, start the heating system 2, the cooling system 3 and the steam humidifier 4 to create low temperature environment, high temperature environment and high temperature and high humidity environment in the corresponding room, and complete the preparation of the low temperature impact test space, high temperature impact test space and high temperature and high humidity impact test space.

[0022] In use, the sample carrier 14 is controlled by the moving device to move on the square steel track 17, so that the sample carrier 14 can carry the sample into the corresponding low temperature impact test space, high temperature impact test space or high temperature and high humidity impact test space. After the sample carrier 14 moves into place, the limiting baffle 15 blocks the connecting channel 13 to separate the high temperature-low temperature environment and the high temperature and high humidity-low temperature environment, so as to avoid mutual influence between the environments.

[0023] 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 four-chamber temperature shock test chamber, characterized in that: The system includes an insulated box (1), a heating system (2), a cooling system (3), and a steam humidifier (4). The insulated box (1) has two rows of test spaces. Each row of test spaces has a low-temperature chamber (11), a high-temperature chamber (12), a sample carrier (14), and a moving mechanism (18). A connecting channel (13) is provided between the low-temperature chamber (11) and the high-temperature chamber (12) for the sample carrier (14) to pass through. The sample carrier (14) can move back and forth between the low-temperature chamber (11) and the high-temperature chamber (12) through the connecting channel (13). The sample carrier (14) is equipped with a barrier at both ends to block the connecting channel (18). 3) A limiting baffle (15) is provided with a sealing device. A track wheel (16) is installed under the sample carrier (14). A square steel track (17) supporting the track wheel (16) is installed in the low chamber (11) and the high chamber (12). A moving mechanism (18) that drives the sample carrier (14) to reciprocate on the square steel track (17) is installed on one side of the high chamber (12). The low chamber (11) is connected to the refrigeration system (3), and the high chamber (12) is connected to the heating system (2). The steam humidifier (4) is connected between the high chamber (12) located below and the heating system (2).

2. The four-chamber temperature shock test chamber according to claim 1, characterized in that: The refrigeration system (3) includes a low-temperature circulating air duct (31), a cold storage unit (32), a refrigeration evaporator (33), a defrosting device (34), and a long-shaft circulating fan (35). The two ends of the low-temperature circulating air duct (31) are connected to the rear side of the low-temperature chamber (11). The cold storage unit (32), the refrigeration evaporator (33), the defrosting device (34), and the long-shaft circulating fan (35) are installed inside the low-temperature circulating air duct (31). Drainage outlets (5) are provided at the bottom of the low-temperature circulating air duct (31) and the bottom of the low-temperature chamber (11).

3. The four-chamber temperature shock test chamber according to claim 2, characterized in that: The long-shaft circulating fan (35) can be detachably installed on the rear side of the low-temperature circulating air duct (31).

4. The four-chamber temperature shock test chamber according to claim 1, characterized in that: The heating system (2) includes a high-temperature circulating air duct (21), a heat accumulator (22), a heater (23), and a high-temperature resistant circulating fan (24). The two ends of the high-temperature circulating air duct (21) are connected to the rear side of the low-temperature chamber (11). The heat accumulator (22), the heater (23), and the high-temperature resistant circulating fan (24) are installed inside the high-temperature circulating air duct (21). Drainage outlets (5) are provided at the bottom of the high-temperature circulating air duct (21) and the bottom of the high-temperature chamber (12).

5. The four-chamber temperature shock test chamber according to claim 4, characterized in that: The high-temperature resistant circulating fan (24) can be detachably installed on the rear side of the high-temperature circulating air duct (21).

6. The four-chamber temperature shock test chamber according to claim 4, characterized in that: The steam outlet of the steam humidifier (4) is installed in the high-temperature circulating air duct (21) in the air outlet direction of the high-temperature circulating fan (24), and a dehumidifying evaporator (25) is installed at the return air end of the high-temperature circulating air duct (21) in which the steam humidifier (4) is installed.

7. The four-chamber temperature shock test chamber according to claim 1, characterized in that: The moving mechanism (18) is a cylinder or a chain conveyor.

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