Variable temperature zone temperature shock test box and test method

Abstract

The invention discloses a variable temperature zone temperature impact test box which comprises a rotating device and a plurality of box bodies placed on the rotating device, the box bodies are evenly arranged along a rotating disc of the rotating device, each box body is provided with an air opening, a high-temperature generator and a low-temperature generator are arranged on the two sides of the rotating device, and the box bodies rotate along with the rotating device. The high-temperature generator and the low-temperature generator are selectively and detachably connected with the air openings of the box body through the air pipes, so that a high-temperature-normal-temperature-low-temperature three-temperature area and / or a high-temperature-low-temperature two-temperature area can be constructed, and switching between the three-temperature area and the two-temperature area is achieved. Three-temperature-zone and two-temperature-zone cyclic tests are realized on the same temperature impact test box, and the high-temperature generator and the low-temperature generator can be selectively combined and detachably connected with the box body through the air pipes according to requirements, so that the test requirements of a complex temperature change scene of a test article are met; during testing, synchronous operation of a high-temperature area and a low-temperature area is achieved in second-temperature-area testing and third-temperature-area testing, and the load and energy consumption of equipment are greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of environmental testing equipment technology, and in particular to a variable temperature zone temperature shock test chamber and testing method. Background Technology

[0002] Temperature shock test chambers are used to simulate the performance of products under extreme high and low temperature rapid change environments, and to test their thermal expansion and contraction, material stability, and other characteristics. They are widely used in many fields such as electronics, machinery, aerospace, automotive, and materials. Existing two-chamber temperature shock test chambers cannot achieve a transition from room temperature to ambient temperature, making it difficult to meet the needs of multi-temperature zone cyclic testing that requires room temperature. Existing three-chamber temperature shock test chambers have high load and high energy consumption, and the high temperature zone and low temperature zone cannot be operated synchronously during three-temperature zone / two-temperature zone testing, resulting in serious energy waste. Therefore, there is an urgent need for a variable temperature zone temperature shock test chamber. Summary of the Invention

[0003] In response to the shortcomings of existing temperature shock test chambers, such as the lack of a normal temperature transition, difficulty in synchronizing high-temperature and low-temperature zones during testing, and significant energy waste, the applicant provides a reasonably structured variable temperature zone temperature shock test chamber. Through the selective combination and disassembly connection of multiple chambers with high-temperature and low-temperature generators, three-temperature zone or two-temperature zone cyclic testing can be achieved on the same temperature shock test chamber, and two-temperature zone and three-temperature zone testing can be run simultaneously.

[0004] The technical solution adopted in this invention and its beneficial effects are as follows: A variable temperature zone temperature shock test chamber includes a rotating device and several chambers placed on it. The chambers are evenly arranged along the turntable of the rotating device. Each chamber is equipped with an air vent. A high-temperature generator and a low-temperature generator are arranged on both sides of the rotating device. The chambers rotate with the rotating device. The high-temperature generator and the low-temperature generator are selectively and detachably connected to the air vents of the chambers through air ducts, thereby constructing a three-temperature zone of high temperature-normal temperature-low temperature and / or a two-temperature zone of high temperature-low temperature, realizing the switching between the three-temperature zone and the two-temperature zone.

[0005] As a further improvement to the above technical solution: The rotating device has a base and a turntable located above it. The turntable is circular and a servo motor is mounted on top of the turntable.

[0006] Several ball bearings are installed between the base and the turntable.

[0007] The chamber contains a lifting device and a test rack located on top of it.

[0008] A sealing plate is installed inside the chamber and above the test sample rack.

[0009] The top cover of the enclosure is sealed to the lifting device by a sealing strip.

[0010] The enclosure is set to four, and each enclosure has two air vents.

[0011] A testing method based on a variable temperature zone temperature shock test chamber involves rotating a turntable during a three-temperature zone test until the air vents of two of the chambers are connected to the air ducts. A high-temperature generator and a low-temperature generator supply high-temperature and low-temperature media to the two chambers respectively through the air ducts, forming a high-temperature zone and a low-temperature zone. The remaining chamber forms a normal temperature zone, thereby achieving a three-temperature zone cycle test of high temperature-normal temperature-low temperature-normal temperature or low temperature-normal temperature-high temperature-normal temperature, with the high-temperature zone and the low-temperature zone being tested simultaneously.

[0012] As a further improvement to the above technical solution: During the two-temperature zone test, the drive turntable rotates until part of the chamber is connected to the high-temperature generator and the remaining chamber is connected to the low-temperature generator, thus creating a two-temperature zone environment of high temperature-low temperature or low temperature-high temperature, and the high-temperature zone and the low-temperature zone are tested simultaneously.

[0013] The sealing plate moves up and down synchronously with the test rack driven by the lifting device. When the test rack descends, the sealing plate descends to the bottom of the chamber and seals the chamber space. When the test rack rises, the sealing plate is lifted up and the top cover of the chamber is opened.

[0014] This invention enables cyclic testing in both three and two temperature zones within the same temperature shock test chamber. The high-temperature and low-temperature generators can be selectively combined and disassembled with the chamber via ductwork, meeting the testing requirements of complex temperature change scenarios. Both the two- and three-temperature zone tests achieve simultaneous operation of the high- and low-temperature zones, significantly reducing equipment load and energy consumption, resulting in greater energy efficiency. The linkage sealing structure between the sealing plate and the sample rack effectively blocks gas convection within the chamber, ensuring temperature field stability and improving the accuracy of test data. The rotating device, driven by a servo motor and supported by ball bearings, achieves high-precision positioning of the turntable and chamber while reducing rotational resistance, ensuring precise and smooth temperature zone switching. The linkage design between the sealing plate and the sample rack simplifies the opening and sealing operations of the chamber, improving testing efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 for Figure 1 Sectional view of AA.

[0017] In the diagram: 1. Box body; 11. Sealing plate; 12. Test sample rack; 13. Sealing strip; 14. Lifting device; 15. Air outlet; 16. Top cover; 2. Rotating device; 21. Turntable; 22. Ball bearing; 23. Base; 24. Servo motor; 3. Air duct; 4. High temperature generator; 5. Low temperature generator. Detailed Implementation

[0018] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0019] like Figure 1 , Figure 2 As shown, the variable temperature zone temperature shock test chamber of the present invention has four chambers 1, all placed on a rotating device 2. Specifically, the four chambers 1 are evenly distributed circumferentially along the circular turntable 21 of the rotating device 2, and each of the four chambers 1 has two air vents 15. A high-temperature generator 4 and a low-temperature generator 5 are respectively arranged on the left and right sides of the rotating device 2. The high-temperature generator 4 generates and continuously supplies high-temperature airflow, and the low-temperature generator 5 generates and continuously supplies low-temperature airflow. The high-temperature generator 4 and the low-temperature generator 5 are connected to the air duct 3.

[0020] The rotating device 2 has a base 23 and a turntable 21 located above it. The turntable 21 is circular. Several balls 22 are arranged between the base 23 and the turntable 21 to provide support and reduce resistance due to rolling friction. The turntable 21 is driven to rotate by a servo motor 24 located on its top, so that the rotation angle of the turntable 21 can be precisely positioned.

[0021] The chamber 1 has a lifting device 14 and a test rack 12 located on it. The top cover 16 of the chamber 1 is sealed to the lifting device 14 by a sealing strip 13. A sealing plate 11 is installed inside the chamber 1 and above the test rack 12. When a temperature shock is performed, the test rack 12 descends with the lifting device 14, and the sealing plate 11 also descends and reaches the bottom, which can seal the space of the chamber 1 and prevent the gas inside the chamber 1 from being exchanged with the atmosphere. When the next set of test racks 12 rises, it will push against the sealing plate 11 and open the top cover 16 of the chamber 1.

[0022] When a three-temperature zone test is required, the two opposing chambers 1 rotate with the turntable 21 to the air outlet 15 and connect to the air duct 3. The high-temperature generator 4 and the low-temperature generator 5 can provide stable heat and cold sources to the two chambers 1 respectively through the air duct 3. At this time, the chamber 1 connected to the high-temperature generator 4 is the high-temperature zone, the chamber 1 connected to the low-temperature generator 5 is the low-temperature zone, and the other two opposing chambers 1 are the normal temperature zone, thus constructing a three-temperature zone environment (i.e., high temperature-normal temperature-low temperature-normal temperature, low temperature-normal temperature-high temperature-normal temperature), realizing the performance testing of the test sample under extreme high and low temperature rapid switching conditions. During the three-temperature zone test, the high-temperature zone and the low-temperature zone can be tested simultaneously, optimizing energy consumption and testing efficiency.

[0023] When a two-temperature zone test is required, the low-temperature generator 5 is connected to two adjacent chambers 1, and the high-temperature generator 4 is connected to the other two adjacent chambers 1, thereby creating a two-temperature zone environment (i.e., high temperature-low temperature, low temperature-high temperature). During the two-temperature zone test, the high-temperature zone and the low-temperature zone can be tested simultaneously. This solves the problem that the temperature shock of a two-chamber system cannot exceed the normal temperature. Compared with a three-chamber system, the temperature shock load is smaller and the energy consumption is lower.

[0024] The above description is an explanation of the present invention and not a limitation thereof. The present invention can be modified in any form without departing from its spirit.

Claims

1. A variable temperature zone temperature shock test chamber, comprising a rotating device (2) and several chambers (1) placed thereon, characterized in that: The housing (1) is evenly arranged along the turntable (21) of the rotating device (2). Each housing (1) is equipped with an air vent (15). High temperature generator (4) and low temperature generator (5) are set on both sides of the rotating device (2). The housing (1) rotates with the rotating device (2). The high temperature generator (4) and the low temperature generator (5) are selectively and detachably connected to the air vent (15) of the housing (1) through the air duct (3). Thus, a three-temperature zone of high temperature-normal temperature-low temperature and / or a two-temperature zone of high temperature-low temperature can be constructed to realize the switching between the three-temperature zone and the two-temperature zone.

2. The variable temperature zone temperature shock test chamber according to claim 1, characterized in that: The rotating device (2) has a base (23) and a turntable (21) located above it. The turntable (21) is circular and a servo motor (24) is installed on the top of the turntable (21).

3. The variable temperature zone temperature shock test chamber according to claim 2, characterized in that: Several ball bearings (22) are arranged between the base (23) and the turntable (21).

4. The variable temperature zone temperature shock test chamber according to claim 1, characterized in that: The box (1) has a lifting device (14) and a test rack (12) located on it.

5. The variable temperature zone temperature shock test chamber according to claim 4, characterized in that: A sealing plate (11) is installed inside the box (1) and above the test sample rack (12).

6. The variable temperature zone temperature shock test chamber according to claim 4, characterized in that: The top cover (16) of the box (1) is sealed to the lifting device (14) by a sealing strip (13).

7. The variable temperature zone temperature shock test chamber according to claim 1, characterized in that: The enclosure (1) is set to four, and each enclosure (1) has two air vents (15).

8. A test method based on the variable temperature zone temperature shock test chamber of claim 1, characterized in that: During the three-temperature zone test, the drive turntable (21) is rotated until the air outlets (15) of two of the boxes (1) are connected to the air duct (3). The high temperature generator (4) and the low temperature generator (5) supply high temperature and low temperature media to the two boxes (1) through the air duct (3) respectively, forming a high temperature zone and a low temperature zone. The remaining box (1) forms a normal temperature zone, thereby realizing a three-temperature zone cycle test of high temperature-normal temperature-low temperature-normal temperature or low temperature-normal temperature-high temperature-normal temperature, and the high temperature zone and the low temperature zone are tested synchronously.

9. The test method according to claim 8, characterized in that: During the two-temperature zone test, the drive turntable (21) is rotated until part of the chamber (1) is connected to the high temperature generator (4) and the remaining chamber (1) is connected to the low temperature generator (5), thus constructing a two-temperature zone environment of high temperature-low temperature or low temperature-high temperature, and the high temperature zone and the low temperature zone are tested simultaneously.

10. The test method according to claim 8, characterized in that: The sealing plate (11) is raised and lowered synchronously with the test rack (12) driven by the lifting device (14). When the test rack (12) descends, the sealing plate (11) descends to the bottom of the box (1) and seals the space of the box (1). When the test rack (12) rises, the sealing plate (11) is lifted and the top cover (16) of the box (1) is opened.

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