Ultra-fast cold and hot impact test equipment convenient to use and method

Abstract

The invention discloses ultrafast cold and hot impact test equipment convenient to use and a method, relates to the technical field of cold and hot impact test equipment, and solves the problems that an existing cold and hot impact test box is inconvenient to observe a test process and is difficult to realize fast cold and hot impact. Comprising a test machine body, a workpiece bin, a refrigerating system and a heating system are arranged in the test machine body, the workpiece bin comprises a workbench and a rotary drum, the workbench is located in the rotary drum and used for placing or clamping a test piece, and the rotary drum is connected to a rotation driving piece; two ventilation holes are connected to the periphery of the rotary drum, each of the refrigerating system and the heating system comprises an air inlet and an air outlet, and when the rotary drum rotates, one ventilation hole is aligned to the air inlet / air outlet of the refrigerating system, and the other ventilation hole is aligned to the air outlet / air inlet of the heating system. According to the invention, the test process is convenient to observe, the consumption is reduced, the switching efficiency of cold and hot shock is improved, and the effect of convenient test is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of thermal shock test equipment, and in particular to ultra-fast thermal shock test equipment and method that are easy to use. Background Art

[0002] Thermal shock test chambers are mainly used to test the safety performance of electronic components and provide reliability tests, product screening tests, etc. Thermal shock test chamber tests can effectively improve product reliability and effectively control product quality. As product quality requirements continue to increase, thermal shock test chambers are widely used in aviation, automobile, home appliances and other technical fields; However, in the existing hot and cold shock test chamber, the product is subjected to high-temperature test in a high-temperature chamber and low-temperature test in a low-temperature chamber. It is necessary to lift the device to reciprocate between the high-temperature chamber and the low-temperature chamber, which is not convenient for observing the test process, increases the consumption of the device, reduces the test efficiency, and makes it difficult to achieve rapid hot and cold shock. Summary of the invention

[0003] The purpose of the present invention is to provide an ultra-fast thermal shock test device and method that is easy to use, which is convenient for observing the test process, reduces consumption, improves the switching efficiency of thermal shock, and is convenient for testing.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: A convenient ultra-fast thermal shock test device comprises a test body, wherein a workpiece bin, a refrigeration system and a heating system are arranged in the test body, the workpiece bin comprises a workbench and a rotating drum, the workbench is located in the rotating drum and a test piece is placed or clamped thereon, the rotating drum is connected to a rotating driving member; two ventilation holes are connected to the outer periphery of the rotating drum, the refrigeration system and the heating system both comprise an air inlet and an air outlet, when the rotating drum rotates, one ventilation hole is aligned with the air inlet / air outlet of the refrigeration system, and the other ventilation hole is aligned with the air outlet / air inlet of the heating system.

[0005] By adopting the above technical solution, the connection with the air inlet / outlet of the refrigeration system and the air outlet / inlet of the heating system can be achieved through the rotation of the drum without affecting the overall position of the workbench, which is convenient for observation of the test process. Compared with the up and down lifting process, the reciprocating swing reduces consumption and improves the switching efficiency of cold and hot shocks, which is convenient for testing.

[0006] Furthermore, two patch blocks are connected to the outer periphery of the rotating drum, and a first through hole is opened on the patch block. The inner end of the first through hole is connected to the ventilation hole, and the outer end is connected to the corresponding refrigeration system / heating system.

[0007] By adopting the above technical solution, the patch block realizes the connection between the ventilation hole and the corresponding refrigeration system / heating system.

[0008] Furthermore, a second air return port is provided on the patch block, and when the first through hole is aligned with the air outlet of the heating system / cooling system, the second air return port is aligned with the air inlet of the heating system / cooling system.

[0009] By adopting the above technical solution, the air outlet in the heating system and the cooling system is facilitated. When the air is not passed into the drum, the air can be returned through the second return air port, which is convenient for heat exchange and reduces energy consumption.

[0010] Furthermore, the second return air port is connected to the return air duct.

[0011] By adopting the above technical solution, the return air duct facilitates return air heat exchange.

[0012] Furthermore, the air inlet and the air outlet include abutments at the ends, and the abutments abut against the outer periphery of the patch block.

[0013] By adopting the above technical solution, a close fit between the air inlet and the air outlet and the patch is achieved.

[0014] Furthermore, the air inlets and air outlets of the refrigeration system and the heating system are symmetrically arranged up and down.

[0015] By adopting the above technical solution, the efficiency of cooling and heating is improved, and the test effect is improved.

[0016] Furthermore, the patch block is further extended with an arc section on the side of the first through hole away from the second return air outlet. When the drum rotates, the air inlet and the air outlet are respectively aligned with the first through hole and the arc section, or respectively aligned with the second return air outlet and the first through hole.

[0017] By adopting the above technical solution, the air inlet and the air outlet are kept always in contact with the outside of the patch, thereby avoiding loose fitting or interference and collision caused by elasticity and other problems before and after rotation.

[0018] A convenient ultra-fast thermal shock test method, the test piece is placed or clamped on the workbench, and then the cooling system and heating system are working. Its working modes include cooling mode, heating mode and thermal shock mode. In cooling mode, the drum rotates so that one vent is aligned with the air inlet of the cooling system and the other vent is aligned with the air outlet of the heating system, with the air inlet direction passing through the workbench; In heating mode, the drum rotates so that one vent is aligned with the air inlet of the heating system and the other vent is aligned with the air outlet of the cooling system, and the air inlet direction passes through the workbench; In the hot and cold shock mode, the drum swings back and forth, one vent hole moves back and forth between the air inlet and outlet of the cooling system, and the other vent hole moves back and forth between the air inlet and outlet of the heating system.

[0019] By adopting the above technical solution, the rotation of the drum realizes the connection with the air inlet / outlet of the refrigeration system and the air outlet / inlet of the heating system, which is convenient for observation of the test process. The reciprocating swing reduces consumption, improves the switching efficiency of cold and hot shocks, and is convenient for testing.

[0020] In summary, the present invention has the following beneficial effects: The test machine body can be connected to the air inlet / outlet of the refrigeration system and the air outlet / inlet of the heating system through the rotation of the drum without affecting the overall position of the workbench, which is convenient for observing the test process. Compared with the up and down lifting process, the reciprocating swing reduces consumption and improves the switching efficiency of cold and hot shocks, which is convenient for testing. When the air is not passed into the drum, the return air can be achieved through the second return air port, which is convenient for heat exchange to reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a convenient ultra-fast thermal shock test device of the present invention; Figure 2 It is a schematic structural diagram of the internal rotating drum part of a convenient ultra-fast thermal shock test device of the present invention; Figure 3 It is a schematic diagram of the internal rotating drum part of a convenient ultra-fast thermal shock testing device of the present invention in another working state.

[0022] In the figure, 1, test machine body; 11, compartment door; 2, workbench; 3, rotating drum; 31, ventilation hole; 4, air inlet; 41, patch; 5, air outlet; 6, patch block; 61, first through hole; 62, second return air outlet; 63, return air duct; 64, arc segment. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings, and this embodiment does not constitute a limitation of the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0024] A convenient ultra-fast thermal shock test equipment, such as Figure 1 and Figure 2As shown, it includes a test body 1, and the outer side of the test body 1 is connected to a warehouse door 11, and the warehouse door 11 can be a sealed warehouse door or other structures. The test body 1 is provided with a workpiece warehouse, a refrigeration system and a heating system. The workpiece warehouse includes a workbench 2 and a rotating drum 3 (the workbench 2 can be fixed in the test body 1, or it can be a hollow table with a corresponding arc structure, which is placed in the workbench 2 through the bottom rollers, and relies on gravity to maintain the relative stability of the test piece when the rotating drum reciprocates). The workbench 2 is located in the rotating drum 3 and the test piece is placed or clamped. After the warehouse door 11 is opened, the workbench 2 is loaded and unloaded. The warehouse door 11 can be transparent for easy observation, and the observation window can also be set at other positions.

[0025] like Figure 2 and Figure 3 As shown, the inner end of the drum 3 is connected to a rotating drive member, which can be a driving structure such as a motor, to drive the drum 3 to rotate. In this embodiment, the drum only swings within ±20 degrees; the upper and lower sides of the outer circumference of the drum 3 are respectively penetrated by ventilation holes 31, and the refrigeration system and the heating system both include an air inlet 4 and an air outlet 5. In this embodiment, the air inlet 4 and the air outlet 5 of the refrigeration system and the heating system are symmetrically arranged up and down (the heating system is on the top, and the refrigeration system is on the bottom). When the drum 3 rotates, the lower The square ventilation hole 31 is aligned with the air inlet 4 / air outlet 5 of the refrigeration system, and the upper ventilation hole 31 is aligned with the air outlet 5 / air inlet 4 of the heating system. Air is taken in through the air inlet 4 and air is exhausted from the drum 3 through the air outlet 5. The wind from the air outlet 5 can be discharged or discharged after heat exchange. For example, during heating, the air inlet 4 of the heating system takes air in from the drum 3, and the air outlet 5 of the refrigeration system corresponds to exhaust. The exhaust air can exchange heat with the air source end of the heating system to save energy.

[0026] like Figure 2 As shown, the rotary drum 3 includes two symmetrical patches 6 connected at the periphery, and a first through hole 61 is provided on the patch block 6. The inner end of the first through hole 61 is connected to the corresponding ventilation hole 31, and the outer end is connected to the corresponding refrigeration system / heating system; a second return air port 62 is provided on the patch block 6. When the rotary drum 3 is rotated until the first through hole 61 is aligned with the air outlet 5 of the heating system / refrigeration system, the second return air port 62 is aligned with the air inlet 4 of the heating system / refrigeration system, and the second return air port 62 is connected to the return air duct 63 at the same time, so that when the air inlet 4 of the heating system and the refrigeration system does not take air into the rotary drum 3, the return air is realized through the return air duct 63. The return air can exchange heat with the inside of the corresponding system through the heat exchanger, thereby reducing the energy consumption of the refrigeration or heating system.

[0027] like Figure 2As shown, the air inlet 4 and the air outlet 5 include a patch 41 detachably connected to the end, the patch 41 abuts against the outer periphery of the patch block 6 to achieve fitting, and the patch block 6 is further extended with an arc segment 64 on the side of the first through hole 61 away from the second return air outlet 62. When the drum 3 rotates, the air inlet 4 and the air outlet 5 are respectively aligned with the first through hole 61 and the arc segment 64 (to achieve closed abutment of the air inlet and the air outlet 5 into the drum 3), or are respectively aligned with the second return air outlet 62 and the first through hole 61 (to achieve return air heat exchange and exhaust).

[0028] like Figure 2 and Figure 3 As shown, this embodiment also discloses a convenient ultra-fast thermal shock test method. After opening the door 11, the test piece is placed or clamped on the workbench 2 and then the door 11 is tightly closed; then the refrigeration system and the heating system work, and the working modes include the refrigeration mode, the heating mode and the thermal shock mode. In the heating mode, the heating system starts heating, while the cooling system does not work, the drum 3 rotates until the upper ventilation hole 31 is aligned with the air inlet 4 of the heating system, and the lower ventilation hole 31 is aligned with the air outlet 5 of the cooling system, and the air inlet direction passes through the workbench 2, and the air outlet 5 of the cooling system can exchange heat with the air source end of the heating system, or it can be discharged directly; In the cooling mode, the cooling system starts heating, while the heating system does not work, the drum 3 rotates until the lower ventilation hole 31 is aligned with the air inlet 4 of the cooling system, and the upper ventilation hole 31 is aligned with the air outlet 5 of the heating system, and the air inlet direction passes through the workbench 2, and the air outlet 5 of the heating system can exchange heat with the air source end of the cooling system, or it can be discharged directly; In the hot and cold shock mode, the refrigeration system and the heating system are started at the same time, the drum 3 swings back and forth, the lower ventilation holes 31 reciprocate between the air inlet 4 and the air outlet 5 of the refrigeration system, and the upper ventilation holes 31 reciprocate between the air inlet 4 and the air outlet 5 of the heating system. When the air inlet 4 of the heating system and the refrigeration system does not take air into the drum 3, the second return air outlet 62 returns air through the return air duct 63, and the return air exchanges heat with the corresponding refrigeration / heating system through the heat exchanger.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the technical solution of the present invention.

Claims

1. A convenient ultra-fast thermal shock test equipment, characterized by: The test machine comprises a test body, wherein a workpiece bin, a refrigeration system and a heating system are arranged in the test body, the workpiece bin comprises a workbench and a rotating drum, the workbench is located in the rotating drum and a test piece is placed or clamped thereon, the rotating drum is connected to a rotating driving member; two ventilation holes are connected to the outer periphery of the rotating drum, the refrigeration system and the heating system both comprise an air inlet and an air outlet, and when the rotating drum rotates, one ventilation hole is aligned with the air inlet / air outlet of the refrigeration system, and the other ventilation hole is aligned with the air outlet / air inlet of the heating system.

2. The ultra-fast thermal shock test equipment according to claim 1 is characterized in that: Two patch blocks are connected to the outer periphery of the rotating drum. A first through hole is opened on the patch block. The inner end of the first through hole is connected to the ventilation hole, and the outer end is connected to the corresponding refrigeration system / heating system.

3. The ultra-fast thermal shock test equipment according to claim 2 is characterized in that: The patch block is provided with a second air return port. When the first through hole is aligned with the air outlet of the heating system / refrigeration system, the second air return port is aligned with the air inlet of the heating system / refrigeration system.

4. The ultra-fast thermal shock test equipment according to claim 3 is characterized in that: The second return air port is communicated with the return air duct.

5. The ultra-fast thermal shock test equipment according to claim 3 is characterized in that: The air inlet and the air outlet include end portions of the adhesive openings, which abut against the outer periphery of the patch block.

6. The ultra-fast thermal shock test equipment according to claim 1 or 2, which is convenient to use, is characterized in that: The air inlet and the air outlet of the refrigeration system and the heating system are symmetrically arranged up and down.

7. A convenient ultra-fast thermal shock test equipment according to claim 3 or 5, characterized in that: The patch block is further extended with an arc section on the side of the first through hole away from the second return air outlet. When the drum rotates, the air inlet and the air outlet are respectively aligned with the first through hole and the arc section, or respectively aligned with the second return air outlet and the first through hole.

8. A test method based on the convenient-to-use ultra-fast thermal shock test equipment according to claim 1, characterized in that: The test piece is placed or clamped on the workbench, and then the cooling system and heating system work. The working modes include cooling mode, heating mode and cold and hot shock mode. In cooling mode, the drum rotates so that one vent is aligned with the air inlet of the cooling system and the other vent is aligned with the air outlet of the heating system, with the air inlet direction passing through the workbench; In heating mode, the drum rotates so that one vent is aligned with the air inlet of the heating system and the other vent is aligned with the air outlet of the cooling system, and the air inlet direction passes through the workbench; In the hot and cold shock mode, the drum swings back and forth, one vent hole moves back and forth between the air inlet and outlet of the cooling system, and the other vent hole moves back and forth between the air inlet and outlet of the heating system.

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