Screw rod type two-box cold and hot impact box

Abstract

The utility model discloses a screw rod type two-box cold and hot impact box, a high-temperature chamber and a low-temperature chamber are arranged up and down in a box body, and an elevator drives a transmission screw rod, so that a hanging basket (used for placing a sample to be tested) can quickly move between the high-temperature chamber and the low-temperature chamber along the vertical direction; therefore, efficient temperature shock testing of a sample is achieved, testing errors caused by unstable lifting are avoided, through the structural design, the capacity of the cold and hot shock box for rapidly switching different temperature environments is improved, various temperature conditions possibly encountered in actual use of a product can be accurately simulated, and the testing accuracy is improved. Therefore, the performance and the reliability of the product are accurately evaluated.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental test chambers, and more specifically to a screw-type two-chamber hot and cold shock chamber. Background Art

[0002] Hot and cold shock chamber is also called hot and cold shock machine. It is an essential testing equipment for metal, plastic, rubber, electronic and other material industries. It is particularly suitable for safety performance testing of electronic components, reliability testing, product screening testing, etc. Hot and cold shock chamber is used to test the material structure or composite material to see how much it can endure in a continuous environment of extremely high and low temperatures in an instant. It can detect chemical changes or physical damage caused by thermal expansion and contraction of the sample in the shortest time. Through this equipment test, the reliability of the product can be improved and the quality control of the product can be carried out.

[0003] The refrigeration cycle of the hot and cold shock box usually adopts the reverse Carroll cycle. The cycle consists of two isothermal processes and two adiabatic processes. The process is as follows: the refrigerant is adiabatically compressed to a higher pressure by the compressor, consuming work to increase the exhaust temperature, and then the refrigerant isothermally exchanges heat with the surrounding medium through the condenser, transferring heat to the surrounding medium; then the refrigerant adiabatically expands through the valve to do work, at which time the refrigerant temperature decreases, and finally the refrigerant isothermally absorbs heat from the object with a higher temperature through the evaporator, lowering the temperature of the cooled object, and this cycle repeats itself to achieve the purpose of cooling.

[0004] After the existing hot and cold shock box is completed, the workpiece is generally taken out directly. Since the temperature in the box cannot be cooled down in time, it is easy to cause certain damage to the user during the process of taking out the workpiece, and the safety of the user cannot be guaranteed. Based on this, a Chinese patent with publication number CN 219482697 U (named as a hot and cold shock box) proposed a technical solution of "through the setting of a protective structure, after the high-temperature test of the workpiece is completed, the workpiece is automatically moved to the outside of the box through the support plate, and the workpiece on the upper end of the support plate is taken away, so as to avoid the user from needing to take the workpiece through the inside of the hot cavity after the test is completed, thereby avoiding the high temperature remaining in the hot cavity from causing certain damage to the user, thereby protecting the user". However, this structure has obvious defects. For example, the workpiece is moved to the outside of the box through the support plate, and then the workpiece is manually taken away and then placed in a low-temperature chamber for testing. In this process, the surface temperature of the workpiece will not drop significantly, resulting in inaccurate detection accuracy of the impact test. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a screw-type two-box cold and hot shock box to improve the detection accuracy of the cold and hot shock box.

[0006] The technical solution of the utility model is as follows: A screw-type two-box hot and cold shock box, comprising:

[0007] A box body, wherein a high temperature chamber and a low temperature chamber are arranged in the box body, and the high temperature chamber and the low temperature chamber are arranged up and down in the box body;

[0008] A lifting mechanism, the lifting mechanism comprising a lifter, a transmission screw, a lifting rod and a limit column, the output end of the lifter is connected to the transmission screw to drive the slider on the transmission screw to move up and down, the lifting rod is connected to the slider to achieve synchronous movement, and the limit column is provided with an upper limit sensor and a lower limit sensor for limiting the space for the lifting rod to move up and down;

[0009] A hanging basket is connected to a slider on the transmission screw rod, and the hanging basket can be moved along a vertical direction under the drive of the elevator to enter the low-temperature chamber from the high-temperature chamber or enter the high-temperature chamber from the low-temperature chamber.

[0010] Furthermore, a sealing belt is provided on the hanging basket, and a square channel is provided between the high-temperature chamber and the low-temperature chamber. When the hanging basket passes through the square channel to enter the low-temperature chamber or the high-temperature chamber, the end surface of the hanging basket covers the square channel, and the sealing belt seals the gap between the hanging basket and the square channel.

[0011] Furthermore, a first high temperature chamber fan and a second high temperature chamber fan are arranged in the high temperature chamber, the air outlets of the first high temperature chamber fan and the second high temperature chamber fan are oriented in the same direction, and the first high temperature chamber fan and the second high temperature chamber fan are distributed up and down and staggered.

[0012] Furthermore, a high temperature chamber heater is provided in the high temperature chamber.

[0013] Furthermore, a first low-temperature chamber fan and a second low-temperature chamber fan are arranged in the low-temperature chamber, the air outlets of the first low-temperature chamber fan and the second low-temperature chamber fan are oriented in the same direction, and the first low-temperature chamber fan and the second low-temperature chamber fan are distributed up and down and staggered.

[0014] Furthermore, an evaporator is provided in the low temperature chamber.

[0015] Furthermore, a protective cover is provided at the upper end of the box body, and the protective cover is arranged around the outer circumference of the transmission screw rod, the lifting rod and the limiting column.

[0016] Furthermore, the box body is provided with a high temperature chamber door and a low temperature chamber door, the high temperature chamber door is used to seal the opening of the high temperature chamber, the low temperature chamber door is used to seal the opening of the low temperature chamber, and the high temperature chamber door is provided with an observation window.

[0017] The utility model according to the above scheme has the following beneficial effects:

[0018] (1) The utility model provides a screw-type two-chamber hot and cold shock chamber, in which a high-temperature chamber and a low-temperature chamber are arranged vertically in the chamber, so that a hanging basket (for placing samples to be tested) can be quickly moved between the high-temperature chamber and the low-temperature chamber along the vertical direction, thereby realizing efficient temperature shock testing of samples. Through such a structural design, the ability of the hot and cold shock chamber to quickly switch between different temperature environments is improved, which helps to accurately simulate various temperature conditions that the product may encounter in actual use, thereby accurately evaluating the performance and reliability of the product.

[0019] (2) The screw-type two-chamber hot and cold shock chamber provided by the utility model improves the lifting accuracy of the hanging basket by using a lifting mechanism. The lift drives the transmission screw, so that the lifting rod connected to the slider on the transmission screw can move synchronously. This design ensures the stability and accuracy of the hanging basket during the lifting process, and avoids the test error caused by the unstable lifting.

[0020] (3) The utility model provides a screw-type two-box hot and cold shock box. The upper limit sensor and the lower limit sensor on the limit column are used to limit the up and down movement space of the lifting rod, thereby preventing the hanging basket from exceeding the preset range during the lifting process, ensuring the safety of the test and the reliability of the equipment. This limit protection mechanism plays an important safety guarantee role in the operation of the equipment and avoids equipment damage caused by equipment failure or misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is one of the internal structure schematic diagrams of a screw-type two-box hot and cold shock box in an embodiment of the utility model;

[0023] Figure 2 This is a second schematic diagram of the internal structure of a screw-type two-box hot and cold shock box in an embodiment of the utility model;

[0024] Figure 3 This is one of the three-dimensional structural schematic diagrams of a screw-type two-box hot and cold shock box in the embodiment of the utility model;

[0025] Figure 4This is the second schematic diagram of the three-dimensional structure of a screw-type two-box hot and cold shock box in the embodiment of the utility model.

[0026] In the figure, 1. box body; 11. high temperature chamber; 12. low temperature chamber; 2. lifting mechanism; 21. lift; 22. transmission screw; 23. lifting rod; 24. limit column; 241. upper limit sensor; 242. lower limit sensor; 3. hanging basket; 41. first high temperature chamber fan; 42. second high temperature chamber fan; 5. high temperature chamber heater; 61. first low temperature chamber fan; 62. second low temperature chamber fan; 7. evaporator; 8. protective cover; 91. high temperature chamber door; 911. observation window; 92. low temperature chamber door. DETAILED DESCRIPTION

[0027] The following detailed description and drawings of the embodiments of the present invention are used to illustrate the principle of the present invention, but cannot be used to limit the scope of the present invention, that is, the present invention is not limited to the embodiments described.

[0028] In order to better understand the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0029] See also Figure 1 to Figure 4 As shown, an embodiment of the utility model provides a screw-type two-box hot and cold shock box, including a box body 1, a lifting mechanism 2 and a hanging basket 3. A high-temperature chamber 11 and a low-temperature chamber 12 are arranged in the box body 1. The high-temperature chamber 11 and the low-temperature chamber 12 are arranged up and down in the box body 1. This design makes the overall structure of the hot and cold shock box compact and occupies a small area. At the same time, this design is also easy to operate and maintain.

[0030] In this embodiment, the lifting mechanism 2 includes an elevator 21, a transmission screw 22, a lifting rod 23 and a limiting column 24. The output end of the elevator 21 is connected to the transmission screw 22 to drive the slider on the transmission screw 22 to move up and down. The lifting rod 23 is connected to the slider to achieve synchronous movement. The hanging basket 3 is connected to the slider on the transmission screw 22. The hanging basket 3 can move in the vertical direction under the drive of the elevator 21 to enter the low-temperature chamber 12 from the high-temperature chamber 11 or enter the high-temperature chamber 11 from the low-temperature chamber 12. Specifically, the elevator 21, the transmission screw 22, the lifting rod 23 and the limiting column 24 work together, so that the hanging basket 3 can move flexibly in the vertical direction. The output end of the elevator 21 is connected to the transmission screw 22. By driving the slider on the transmission screw 22 to move up and down, the lifting and lowering of the hanging basket 3 is achieved. This design not only simplifies the mechanical structure, but also improves the movement accuracy of the hanging basket 3.

[0031] In this embodiment, an upper limit sensor 241 and a lower limit sensor 242 for limiting the up and down movement space of the lifting rod 23 are provided on the limit column 24. This design can limit the up and down movement space of the lifting rod 23, thereby ensuring that the hanging basket 3 does not exceed a predetermined range during the movement, avoiding the hanging basket 3 from colliding with the top surface or the bottom surface of the box body 1, thereby improving the safety of the hot and cold shock box.

[0032] In the hot and cold shock test, maintaining high and low temperatures consumes a lot of energy. If there is a gap between the high temperature chamber 11 and the low temperature chamber 12, heat will be transferred through these gaps, resulting in unnecessary energy loss. Therefore, it is very important to ensure the isolation between the high temperature chamber 11 and the low temperature chamber 12 to avoid heat exchange and temperature fluctuations. Based on this, the present embodiment provides a screw-type two-box hot and cold shock box, a sealing belt is provided on the hanging basket 3, and a square channel is provided between the high temperature chamber 11 and the low temperature chamber 12. When the hanging basket 3 passes through the square channel to enter the low temperature chamber 12 or the high temperature chamber 11, the end face of the hanging basket 3 covers the square channel, and the sealing belt seals the gap between the hanging basket 3 and the square channel. This design can effectively reduce or eliminate the heat exchange between the high temperature chamber 11 and the low temperature chamber 12, thereby maintaining the stability of the test environment. The sealing belt reduces energy loss by preventing heat from being transferred through the gap, and helps to maintain the temperature stability in the high temperature chamber 11 and the low temperature chamber 12, thereby reducing energy consumption.

[0033] Preferably, a first high temperature chamber fan 41 and a second high temperature chamber fan 42 are provided in the high temperature chamber 11, and the air outlets of the first high temperature chamber fan 41 and the second high temperature chamber fan 42 are oriented in the same direction, and the first high temperature chamber fan 41 and the second high temperature chamber fan 42 are distributed up and down and staggered. With such a design, the wind delivered by the first high temperature chamber fan 41 and the second high temperature chamber fan 42 can form convection, which helps to distribute the heat more evenly in the high temperature chamber 11, avoid the occurrence of temperature gradients or hot spots, and thus ensure the uniformity of temperature in the high temperature chamber 11. Secondly, the wind delivered by the first high temperature chamber fan 41 and the second high temperature chamber fan 42 forms convection, which can transfer heat faster, so that the high temperature chamber 11 reaches the required temperature faster, thereby reducing the time required to reach stable test conditions and improving test efficiency.

[0034] Preferably, a high temperature chamber heater 5 is provided in the high temperature chamber 11 .

[0035] Preferably, a first low-temperature chamber fan 61 and a second low-temperature chamber fan 62 are provided in the low-temperature chamber 12, and the air outlets of the first low-temperature chamber fan 61 and the second low-temperature chamber fan 62 are oriented in the same direction, and the first low-temperature chamber fan 61 and the second low-temperature chamber fan 62 are distributed up and down and staggered. With this design, the wind delivered by the first low-temperature chamber fan 61 and the second low-temperature chamber fan 62 can form convection, which helps to distribute the cold more evenly in the low-temperature chamber 12, avoid the occurrence of temperature gradients or cold spots, and thus ensure the uniformity of temperature in the low-temperature chamber 12. Secondly, the wind delivered by the first low-temperature chamber fan 61 and the second low-temperature chamber fan 62 forms convection, which can transfer cold more quickly, allowing the low-temperature chamber 12 to reach the required temperature more quickly, thereby reducing the time required to reach stable test conditions and improving test efficiency.

[0036] Preferably, an evaporator 7 is disposed in the low temperature chamber 12 .

[0037] Preferably, a protective cover 8 is provided at the upper end of the box body 1 , and the protective cover 8 is arranged around the outer circumference of the transmission screw 22 , the lifting rod 23 and the limiting column 24 .

[0038] Preferably, the box body 1 is provided with a high temperature chamber door 91 and a low temperature chamber door 92, the high temperature chamber door 91 is used to seal the opening of the high temperature chamber 11, the low temperature chamber door 92 is used to seal the opening of the low temperature chamber 12, and the high temperature chamber door 91 is provided with an observation window 911 for observing the test environment and the state of the test sample in the high temperature chamber 11. Specifically, during the high temperature test process, the door is usually in a closed state to maintain the stability of the test environment, and the setting of the observation window 911 allows the user to observe the test process without opening the door, thereby avoiding heat loss and potential safety risks caused by frequent opening of the door.

[0039] The indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when used, or the orientation or position relationship commonly understood by technical personnel in this field, or the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0040] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0041] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A screw-type two-box hot and cold shock box, characterized in that: include: A box body (1), wherein a high temperature chamber (11) and a low temperature chamber (12) are arranged inside the box body (1), and the high temperature chamber (11) and the low temperature chamber (12) are arranged up and down inside the box body (1); A lifting mechanism (2), the lifting mechanism (2) comprising a lifter (21), a transmission screw (22), a lifting rod (23) and a limit column (24), the output end of the lifter (21) being connected to the transmission screw (22) for driving a slider on the transmission screw (22) to move up and down, the lifting rod (23) being connected to the slider for synchronous movement, and the limit column (24) being provided with an upper limit sensor (241) and a lower limit sensor (242) for limiting the space for the lifting rod (23) to move up and down; A hanging basket (3), wherein the hanging basket (3) is connected to a slider on the transmission screw rod (22), and the hanging basket (3) can be moved in a vertical direction under the drive of the elevator (21) to enter the low-temperature chamber (12) from the high-temperature chamber (11) or to enter the high-temperature chamber (11) from the low-temperature chamber (12).

2. A screw-type two-chamber hot and cold shock chamber as claimed in claim 1, characterized in that: A sealing belt is provided on the hanging basket (3), and a square channel is provided between the high-temperature chamber (11) and the low-temperature chamber (12); when the hanging basket (3) passes through the square channel and enters the low-temperature chamber (12) or the high-temperature chamber (11), the end surface of the hanging basket (3) covers the square channel, and the sealing belt seals the gap between the hanging basket (3) and the square channel.

3. A screw-type two-chamber hot and cold shock chamber as claimed in claim 1, characterized in that: A first high temperature chamber fan (41) and a second high temperature chamber fan (42) are arranged in the high temperature chamber (11); the air outlets of the first high temperature chamber fan (41) and the second high temperature chamber fan (42) are oriented in the same direction, and the first high temperature chamber fan (41) and the second high temperature chamber fan (42) are distributed up and down and are staggered.

4. A screw-type two-chamber hot and cold shock chamber as claimed in claim 1, characterized in that: A high temperature chamber heater (5) is arranged in the high temperature chamber (11).

5. A screw-type two-chamber hot and cold shock chamber as claimed in claim 1, characterized in that: A first low-temperature chamber fan (61) and a second low-temperature chamber fan (62) are arranged in the low-temperature chamber (12); the air outlets of the first low-temperature chamber fan (61) and the second low-temperature chamber fan (62) are oriented in the same direction, and the first low-temperature chamber fan (61) and the second low-temperature chamber fan (62) are distributed up and down and are staggered.

6. A screw-type two-chamber hot and cold shock chamber as claimed in claim 1, characterized in that: An evaporator (7) is arranged in the low-temperature chamber (12).

7. A screw-type two-chamber hot and cold shock chamber as claimed in claim 1, characterized in that: A protective cover (8) is provided at the upper end of the box body (1), and the protective cover (8) is arranged around the outer circumference of the transmission screw rod (22), the lifting rod (23) and the limiting column (24).

8. A screw-type two-chamber hot and cold shock chamber as claimed in claim 1, characterized in that: The box body (1) is provided with a high temperature chamber door (91) and a low temperature chamber door (92); the high temperature chamber door (91) is used to seal the opening of the high temperature chamber (11); the low temperature chamber door (92) is used to seal the opening of the low temperature chamber (12); and an observation window (911) is provided on the high temperature chamber door (91).

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