A three-box cold and hot shock test chamber

Abstract

This utility model belongs to the technical field of test chambers, and specifically relates to a three-chamber thermal shock test chamber. It includes: a test chamber, located inside the test chamber, for placing the product to be tested; a high-temperature chamber, located behind the test chamber, for providing high-temperature airflow to the test chamber; and high-temperature channels symmetrically formed on the left and right sides of the front sidewall of the high-temperature chamber, for connecting to the test chamber; a low-temperature chamber, located below the test chamber, for providing low-temperature airflow to the test chamber; and low-temperature channels symmetrically formed on the left and right sides of the top of the low-temperature chamber, for connecting to the test chamber; and a sealing door, located at the high-temperature channel and the low-temperature channel, for automatically opening and closing the high-temperature channel and the low-temperature channel. This utility model allows the test chamber to switch between a preheated high-temperature chamber and a precooled low-temperature chamber, enabling rapid switching between high and low temperatures, thus improving the thermal shock effect and testing efficiency of the product under test.

Description

Technical Field

[0001] This utility model belongs to the field of test chamber technology, and specifically relates to a three-chamber thermal shock test chamber. Background Technology

[0002] High and low temperature thermal shock testing machines can be used to test the degree to which material structures or composite materials can withstand continuous exposure to extremely high and low temperatures in an instant. This allows for the testing of physical environmental changes caused by thermal expansion and contraction in the shortest possible time. Applicable materials include metals, plastics, rubber, electronics, etc., and can serve as a basis or reference for product improvement.

[0003] Currently available thermal shock test chambers are typically single-chamber structures, integrating the cold source and heat source into a single test chamber. However, when conducting thermal shock tests, it is necessary to cool down from a high temperature to a low temperature or heat up from a low temperature to a high temperature. This temperature conversion process consumes a lot of time and has a slow switching speed, making it impossible to achieve a sudden temperature change, which affects the thermal shock effect and testing efficiency of the product under test. Utility Model Content

[0004] The purpose of this utility model is to provide a three-chamber thermal shock test chamber. By designing a high-temperature chamber, a low-temperature chamber, and a test chamber, the test chamber can be switched and connected with a preheated high-temperature chamber or a precooled low-temperature chamber when the product placed in the test chamber is subjected to high and low temperature tests. This enables rapid switching between high and low temperatures, improving the thermal shock effect and testing efficiency of the product under test.

[0005] To solve the above-mentioned technical problems, this utility model provides a three-chamber thermal shock test chamber, comprising:

[0006] The test chamber, located inside the test chamber, is used to hold the product to be tested;

[0007] A high-temperature chamber is located behind the test chamber and is used to provide high-temperature airflow to the test chamber; and high-temperature channels are symmetrically opened on the left and right sides of the front sidewall of the high-temperature chamber for connecting the test chamber.

[0008] A low-temperature chamber, located below the test chamber, is used to provide low-temperature airflow to the test chamber; and low-temperature channels are symmetrically opened on the left and right sides of the top of the low-temperature chamber for connecting the test chamber.

[0009] Sealed doors are installed in the high-temperature channel and the low-temperature channel to enable automatic opening and closing of the high-temperature channel and the low-temperature channel, thereby enabling switching between high-temperature and low-temperature testing of the test chamber.

[0010] Preferably, it also includes an air inlet grille and an air return grille, which are symmetrically arranged on the left and right sides of the test chamber, respectively.

[0011] Preferably, the high-temperature chamber further includes: a circulating fan, a heating unit, and a preheating duct; the circulating fan is installed on the right side of the high-temperature chamber, and the heating unit is installed on the left side. The two ends of the preheating duct are distributed at 90° to the high-temperature channels on the left and right sides, and the sealing door located at the high-temperature channel can automatically open and close the port of the preheating duct by rotating back and forth at 90°. When the port of the preheating duct is open, the circulating fan can drive the high-temperature airflow generated by the heating unit to circulate back into the high-temperature chamber through the preheating duct.

[0012] Preferably, the low-temperature cavity further includes: a second circulating fan, a refrigeration unit, and a pre-cooling air duct; the second circulating fan is installed on the right side of the high-temperature cavity, and the refrigeration unit is installed on the left side. The two ports of the pre-cooling air duct are distributed at 90° to the low-temperature channels on the left and right sides, and the sealing door located at the low-temperature channel can automatically open and close the port of the pre-cooling air duct by rotating back and forth at 90°. When the port of the pre-cooling air duct is open, the second circulating fan can drive the low-temperature airflow generated by the refrigeration unit to circulate back into the low-temperature cavity through the pre-cooling air duct.

[0013] Preferably, it also includes a gas distribution grid, and the gas distribution grid is also provided on the ports of the high-temperature channel and the low-temperature channel near the test chamber.

[0014] Preferably, it further includes an actuator, which includes a cylinder, a connecting rod, and a rotating shaft; the cylinder is hinged to the test chamber, the driving end of the cylinder is hinged to one end of the connecting rod, the other end of the connecting rod is fixedly sleeved on the end of the rotating shaft, the rotating shaft is rotatably mounted on the test chamber, and the rotation of the rotating shaft can drive the sealing door to achieve a 90° reciprocating rotation.

[0015] Preferably, it also includes a pressure relief port, which is symmetrically located on the top of the test chamber and extends to the pressure relief channel, which is located inside the test chamber and connected to the outside.

[0016] Preferably, it also includes a pressure relief cover, which is rotatably fastened to the pressure relief port via a flip shaft, and the flip shaft is connected via a flip motor.

[0017] Preferably, it also includes a PLC control cabinet and a door, wherein the PLC control cabinet is integrated on the right side of the test chamber and the door is fastened to the front of the test cavity.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] This invention, through the design of a high-temperature chamber, a low-temperature chamber, and a testing chamber, enables the testing chamber to be switched and connected with a preheated high-temperature chamber or a precooled low-temperature chamber when conducting high and low temperature tests on products placed in the testing chamber. This allows for rapid switching between high and low temperatures, improving the thermal shock effect and testing efficiency of the products under test. Attached Figure Description

[0020] Figure 1 This is a structural diagram of a three-chamber thermal shock test chamber according to this utility model.

[0021] Figure 2 This is a partial internal view of a three-chamber thermal shock test chamber according to this utility model.

[0022] Figure 3 This is a structural cross-sectional view of a three-chamber thermal shock test chamber according to this utility model.

[0023] Figure 4 This is a structural diagram of the actuator and pressure relief cover in this utility model.

[0024] Figure 5 This is a structural diagram of the high-temperature cavity in this utility model.

[0025] In the diagram: 1-Test chamber, 2-Test cavity, 21-Inlet air grille, 22-Return air grille, 3-High temperature cavity, 31-High temperature channel, 32-Circulating fan one, 33-Preheating air duct, 4-Low temperature cavity, 41-Low temperature channel, 42-Circulating fan two, 43-Refrigeration unit, 44-Precooling air duct, 5-Sealed door, 6-Air distribution grille, 7-Actuator, 71-Cylinder, 72-Connecting rod, 73-Rotating shaft, 8-Pressure relief port, 81-Pressure relief channel, 82-Pressure relief cover, 83-Tilting shaft, 9-PLC control cabinet, 10-Box door. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0027] like Figures 1-5 As shown, this utility model embodiment provides a three-chamber thermal shock test chamber, including:

[0028] Test chamber 2, located inside test chamber 1, is used to place the product to be tested;

[0029] The high-temperature chamber 3 is located behind the test chamber 2. When the sealing door 5 at the high-temperature channel 31 is opened, the sealing door 5 at the low-temperature channel 41 is closed, and high-temperature airflow is provided to the test chamber 2 through the high-temperature channel 31. High-temperature channels 31 are symmetrically opened on the left and right sides of the front sidewall of the high-temperature chamber 3 to connect the test chamber 2.

[0030] The low-temperature chamber 4 is located below the test chamber 2. When the sealing door 5 at the low-temperature channel 41 is opened, the sealing door 5 at the low-temperature channel 41 is closed, and the low-temperature airflow is provided to the test chamber 2 through the low-temperature channel 41. The low-temperature channel 41 is symmetrically opened on the left and right sides of the top of the low-temperature chamber 4 to connect the test chamber 2.

[0031] The sealing door 5 is installed at the high temperature channel 31 and the low temperature channel 41 to realize the automatic opening and closing of the high temperature channel 31 and the low temperature channel 41, so as to realize the switching of high temperature or low temperature test of the test chamber 2.

[0032] It also includes an air inlet grille 21 and a return air grille 22, which are symmetrically arranged on the left and right sides of the test chamber 2 to achieve uniform distribution of high-temperature airflow or low-temperature airflow.

[0033] The high-temperature chamber 3 also includes: a circulating fan 32, a heating unit, and a preheating duct 33. The circulating fan 32 is installed on the right side of the high-temperature chamber 3, and the heating unit is installed on the left side. The two ends of the preheating duct 33 are distributed at 90° with the high-temperature channels 31 on the left and right sides. The sealing door 5 located at the high-temperature channel 31 can automatically open and close the ends of the preheating duct 33 by rotating back and forth at 90°. When the ends of the preheating duct 33 are open, the circulating fan 32 can drive the high-temperature airflow generated by the heating unit to circulate back into the high-temperature chamber 3 through the preheating duct 33. When the ends of the preheating duct 33 are closed, the high-temperature channel 31 is opened, and the high-temperature airflow enters the test chamber 2 for high-temperature testing. Moreover, the operation of the circulating fan 32 drives the high-temperature airflow to form a circulating airflow in the test chamber 2, improving the temperature uniformity in the test chamber 2. The aforementioned preheating air duct 33 can form a heating circulating airflow in the high-temperature cavity 3, thereby accelerating the heating efficiency of the high-temperature airflow in the high-temperature cavity 3.

[0034] The low-temperature chamber 4 also includes: a second circulating fan 42, a refrigeration unit 43, and a pre-cooling air duct 44; the second circulating fan 42 is installed on the right side of the high-temperature chamber 3, and the refrigeration unit 43 is installed on the left side. The two ports of the pre-cooling air duct 44 are distributed at 90° with the low-temperature channels 41 on the left and right sides. The sealing door 5 located at the low-temperature channel 41 can automatically open and close the port of the pre-cooling air duct 44 by rotating back and forth at 90°. When the port of the pre-cooling air duct 44 is open, the second circulating fan 42 can drive the low-temperature airflow generated by the refrigeration unit 43 to circulate back into the low-temperature chamber 4 through the pre-cooling air duct 44. When the port of the pre-cooling air duct 44 is closed, the low-temperature channel 41 is opened, and the low-temperature airflow enters the test chamber 2 for low-temperature testing. Moreover, the operation of the second circulating fan 42 drives the low-temperature airflow to form a circulating airflow in the test chamber 2, improving the temperature uniformity in the test chamber 2. The pre-cooling air duct 44, as described above, can form a cooling circulating airflow in the low-temperature cavity 4, thereby accelerating the cooling efficiency of the low-temperature airflow in the low-temperature cavity 4.

[0035] It also includes a gas distribution grid 6. The high temperature channel 31 and the low temperature channel 41 near the test chamber 2 are also provided with a gas distribution grid 6, which can evenly distribute the high temperature or low temperature airflow.

[0036] It also includes an actuator 7, which comprises a cylinder 71, a connecting rod 72, and a rotating shaft 73. The cylinder 71 is hinged to the test chamber 1, and the driving end of the cylinder 71 is hinged to one end of the connecting rod 72. The other end of the connecting rod 72 is fixedly sleeved on the end of the rotating shaft 73. The rotating shaft 73 is rotatably mounted on the test chamber 1, and by rotating the rotating shaft 73, the sealing door 5 can be driven to reciprocate 90°. By actuating the cylinder 71, the connecting rod 72 is driven to deflect, thereby driving the rotating shaft 73 to reciprocate the sealing door 5 by 90°, realizing the automatic opening and closing of the ports of the high-temperature channel 31 or the low-temperature channel 41 and the preheating air duct 33 or the precooling air duct 44.

[0037] It also includes a pressure relief port 8, which is symmetrically located on the top of the test chamber 2 and extends to the pressure relief channel 81. The pressure relief channel 81 is located inside the test chamber 1 and is connected to the outside. By opening and closing the pressure relief port 8, the air pressure inside the test chamber 2 can be balanced.

[0038] It also includes a pressure relief cover 82, which is rotatably fastened to the pressure relief port 8 via a flip shaft 83, and the flip shaft 83 is connected to a flip motor. By operating the flip motor, the flip shaft 83 is rotated 90° to open and close the pressure relief cover 82.

[0039] It also includes a PLC control cabinet 9 and a door 10. The PLC control cabinet 9 is integrated on the right side of the test chamber 1, and the door 10 is fastened to the front of the test chamber 2. The above electrical components are connected and controlled by the PLC control cabinet 9.

[0040] It also includes the following working principles:

[0041] During the above tests, the product under test can be placed in test chamber 2, and then the chamber door 10 is closed. When conducting high and low temperature tests, the high-temperature chamber 3 and the low-temperature chamber 4 are preheated and cooled to ensure that the high-temperature and low-temperature airflows in the high-temperature chamber 3 and low-temperature chamber 4 reach the preset temperature thresholds. Then, the sealing door 5 at the high-temperature channel 31 can be opened, allowing the high-temperature airflow from the high-temperature chamber 3 to enter test chamber 2 for high-temperature testing. When conducting low-temperature tests, the sealing door 5 at the high-temperature channel 31 can be closed, and the sealing door 5 at the low-temperature channel 41 can be opened, allowing the low-temperature airflow from the low-temperature chamber 4 to enter test chamber 2 for low-temperature testing. In this way, high and low temperature switching tests can be quickly performed on the product under test in test chamber 2.

[0042] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A three-chamber thermal shock test chamber, characterized in that, include: The test chamber (2) is located inside the test chamber (1) and is used to place the product to be tested. The high-temperature chamber (3) is located behind the test chamber (2) and is used to provide high-temperature airflow to the test chamber (2); and the high-temperature chamber (3) has high-temperature channels (31) symmetrically opened on the left and right sides of the front sidewall of the high-temperature chamber (3) for connecting the test chamber (2); The low-temperature chamber (4) is located below the test chamber (2) and is used to provide low-temperature airflow to the test chamber (2); and the low-temperature chamber (4) has symmetrical low-temperature channels (41) on the top left and right sides for connecting the test chamber (2); A sealing door (5) is installed in the high-temperature channel (31) and the low-temperature channel (41) to realize the automatic opening and closing of the high-temperature channel (31) and the low-temperature channel (41) so as to realize the switching of high-temperature or low-temperature testing of the test chamber (2).

2. The three-chamber thermal shock test chamber as described in claim 1, characterized in that, It also includes an air inlet grille (21) and an air return grille (22), which are symmetrically arranged on the left and right sides of the test chamber (2), respectively.

3. A three-chamber thermal shock test chamber as described in claim 1, characterized in that, The high-temperature chamber (3) also includes: a circulating fan (32), a heating unit and a preheating duct (33); the circulating fan (32) is installed on the right side of the high-temperature chamber (3) and the heating unit is installed on the left side. The two ports of the preheating duct (33) are distributed at 90° with the high-temperature channels (31) on the left and right sides. The sealing door (5) located at the high-temperature channel (31) can automatically open and close the port of the preheating duct (33) by rotating back and forth at 90°. When the port of the preheating duct (33) is open, the circulating fan (32) can drive the high-temperature airflow generated by the heating unit to circulate back to the high-temperature chamber (3) through the preheating duct (33).

4. A three-chamber thermal shock test chamber as described in claim 1, characterized in that, The low-temperature chamber (4) also includes: a second circulating fan (42), a refrigeration unit (43), and a pre-cooling air duct (44); the second circulating fan (42) is installed on the right side of the high-temperature chamber (3), and the refrigeration unit (43) is installed on the left side. The two ports of the pre-cooling air duct (44) are distributed at 90° with the low-temperature channels (41) on the left and right sides. The sealing door (5) located at the low-temperature channel (41) can automatically open and close the port of the pre-cooling air duct (44) by rotating back and forth at 90°. When the port of the pre-cooling air duct (44) is open, the second circulating fan (42) can drive the low-temperature airflow generated by the refrigeration unit (43) to circulate back to the low-temperature chamber (4) through the pre-cooling air duct (44).

5. A three-chamber thermal shock test chamber as described in claim 1, characterized in that, It also includes a gas distribution grid (6), and the gas distribution grid (6) is also provided on the ports of the high temperature channel (31) and the low temperature channel (41) near the test chamber (2).

6. A three-chamber thermal shock test chamber as described in claim 1, characterized in that, It also includes an actuator (7), which includes a cylinder (71), a connecting rod (72), and a rotating shaft (73). The cylinder (71) is hinged to the test chamber (1), and the driving end of the cylinder (71) is hinged to one end of the connecting rod (72). The other end of the connecting rod (72) is fixedly sleeved on the end of the rotating shaft (73). The rotating shaft (73) is rotatably mounted on the test chamber (1), and by rotating the rotating shaft (73), the sealing door (5) can be driven to achieve a 90° reciprocating rotation.

7. A three-chamber thermal shock test chamber as described in claim 1, characterized in that, It also includes a pressure relief port (8), which is symmetrically opened on the top of the test chamber (2) and extends to the pressure relief channel (81), which is arranged inside the test chamber (1) and connected to the outside.

8. A three-chamber thermal shock test chamber as described in claim 7, characterized in that, It also includes a pressure relief cover (82), which is rotatably fastened to the pressure relief port (8) by a flip shaft (83), and the flip shaft (83) is connected by a flip motor.

9. A three-chamber thermal shock test chamber as described in any one of claims 1 to 8, characterized in that, It also includes a PLC control cabinet (9) and a door (10), the PLC control cabinet (9) being integrated on the right side of the test chamber (1), and the door (10) being fastened to the front side of the test chamber (2).

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