Three-box high-low temperature impact test box with up-down structure

Abstract

The utility model discloses a three-box high and low temperature impact test box with an up-down structure, the three-box high and low temperature impact test box with the up-down structure comprises a box body, a high temperature chamber, a low temperature chamber and a test chamber, the high temperature chamber, the low temperature chamber and the test chamber are all arranged in the box body, the high temperature chamber is arranged at the top of the box body, the low temperature chamber is arranged at the bottom of the box body, and the test chamber is arranged in the box body. The test chamber is arranged between the high-temperature chamber and the low-temperature chamber; the high-temperature chamber and the low-temperature chamber are respectively communicated with the test chamber through the box body; the box body further comprises a first air door mechanism and a second air door mechanism; the first air door mechanism is arranged between the high-temperature chamber and the test chamber; and the second air door mechanism is arranged between the low-temperature chamber and the test chamber. In the high and low temperature impact test process, the to-be-tested sample does not need to be moved into the high temperature box or the low temperature box to complete high and low temperature impact, the conditions of test errors, mechanical impact, uneven heating and the like possibly caused by sample movement are effectively avoided, and therefore the effectiveness and result accuracy of the high and low temperature impact test are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high and low temperature shock test chambers, in particular to a three-chamber high and low temperature shock test chamber with an up-and-down structure. Background Art

[0002] The function of a thermal shock test chamber is to test products in various industries such as electronic and electrical components, automation parts, communication components, automotive parts, metals, chemical materials, plastics, etc., and in various fields such as aerospace, military industry, BGA, PCB substrates, electronic chips IC, semiconductor ceramics, etc.

[0003] A thermal shock test chamber is mainly used for temperature shock tests. Its characteristic is that the temperature conversion time is short and the change is fast to form a temperature shock on the product. The degree that can be endured under the continuous environment of extremely high temperature and extremely low temperature in an instant, and test the chemical changes or physical damages caused by thermal expansion and contraction within a short time to confirm the quality of the product.

[0004] A three-chamber shock test chamber is mainly a test device for three temperature points of high temperature, normal temperature, and low temperature, and can also be set as a test device for two temperature points of high temperature and low temperature through a program. Its special performance is reflected in the conversion rate from high temperature to low temperature, or from low temperature to high temperature in an instant. It can be converted from a high temperature of 150°C to a low temperature of -65°C within only 10 seconds, reach the established target low temperature or target low temperature within 5 minutes, and can perform temperature change at a rate of 40°C / min. This is the performance of the conversion rate of the thermal shock test chamber.

[0005] The equipment area of the three-chamber shock test chamber is divided into three parts: a high temperature chamber, a low temperature chamber, and a test chamber. The test product is placed in the test chamber. During impact, the high temperature air in the high temperature chamber or the low temperature air in the low temperature chamber rushes into the test chamber for impact, and the test product is in a static state.

[0006] However, the test chamber air door of the existing three-chamber shock test chamber has a mechanical structure that slides up and down driven by a cylinder, with poor sealing performance, complex processing technology, and is prone to jamming and low reliability during use. Summary of the Utility Model

[0007] Based on this, in view of the technical problems of low reliability and sealing performance of the test chamber air door of the existing three-chamber shock test chamber, it is necessary to provide a three-chamber high and low temperature shock test chamber with an up-and-down structure.

[0008] A three-chamber high and low temperature shock test chamber with an upper and lower structure. The three-chamber high and low temperature shock test chamber with an upper and lower structure includes a box body, a high temperature chamber, a low temperature chamber, and a test chamber. The high temperature chamber, the low temperature chamber, and the test chamber are all arranged inside the box body, so as to ensure the sealing performance of the high temperature chamber, the low temperature chamber, and the test chamber respectively. Among them, the high temperature chamber, the test chamber, and the low temperature chamber are stacked in sequence. The high temperature chamber is arranged at the top of the box body, the low temperature chamber is arranged at the bottom of the box body, and the test chamber is arranged between the high temperature chamber and the low temperature chamber. And the high temperature chamber and the low temperature chamber are respectively communicated with the test chamber through the box body.

[0009] The box body is also provided with a first air door mechanism and a second air door mechanism. The first air door mechanism and the second air door mechanism are arranged inside the box body. The first air door mechanism is arranged between the high temperature chamber and the test chamber in a swinging manner. The second air door mechanism is arranged between the low temperature chamber and the test chamber in a swinging manner.

[0010] In one embodiment, the outer walls of the above-mentioned high temperature chamber, low temperature chamber, and test chamber are respectively coated with glass fiber cotton, so as to effectively improve the heat preservation performance of the high temperature chamber, low temperature chamber, and test chamber.

[0011] In one embodiment, the above-mentioned first air door mechanism includes two first air doors and two first cylinders. The two first air doors are respectively arranged on both sides of the top of the test chamber and are respectively rotatably connected to the inner wall of the box body. The two first cylinders are respectively corresponding to the two first air doors and are respectively arranged on the surface of the box body. The output end of each first cylinder is drivingly connected to the corresponding first air door, so that the first cylinder can drive the corresponding first air door to swing open and close relative to the inner wall of the box body.

[0012] In one embodiment, the above-mentioned second air door mechanism includes two second air doors and two second cylinders. The two second air doors are respectively arranged on both sides of the bottom of the test chamber and are respectively rotatably connected to the inner wall of the box body. The two second cylinders are respectively corresponding to the two second air doors and are respectively arranged on the surface of the box body. The output end of each second cylinder is drivingly connected to the corresponding second air door, so that the second cylinder can drive the corresponding second air door to swing open and close relative to the inner wall of the box body.

[0013] In one embodiment, the above-mentioned test chamber is provided with an exhaust port and a pneumatic valve. The exhaust port is arranged on one side wall of the test chamber, and the exhaust port penetrates through the corresponding side wall of the test chamber and communicates with the inside of the test chamber. The pneumatic valve is connected to the exhaust port

[0014] In one embodiment, the above-mentioned test chamber is also provided with an exhaust fan. The exhaust fan is connected to the end of the exhaust port connected to the external atmosphere.

[0015] In one embodiment, the above-mentioned test chamber is also provided with a smoke exhaust pipe. The smoke exhaust pipe is arranged outside the test chamber, and the smoke exhaust pipe communicates with the inside of the test chamber through one side wall of the test chamber.

[0016] In one embodiment, the above-mentioned three-chamber high and low temperature shock test chamber with an up-and-down structure further includes a heating unit, which is arranged inside the high temperature chamber.

[0017] In one embodiment, the above-mentioned high temperature chamber is provided with a first circulation fan, which is arranged on the side wall of the high temperature chamber and communicates the high temperature chamber with the box body.

[0018] In one embodiment, the above-mentioned three-chamber high and low temperature shock test chamber with an up-and-down structure further includes a refrigeration unit, a cooling water circuit and an evaporator. The refrigeration unit and the cooling water circuit are arranged inside the interlayer between the low temperature chamber and the box body; the evaporator is arranged inside the low temperature chamber; the refrigeration unit is connected to the evaporator through a pipeline; the cooling water circuit is connected to the refrigeration unit.

[0019] In one embodiment, the above-mentioned low temperature chamber is provided with a second circulation fan, which is arranged on the side wall of the low temperature chamber and communicates the low temperature chamber with the box body.

[0020] In one embodiment, the above-mentioned three-chamber high and low temperature shock test chamber with an up-and-down structure further includes an electric control box, which is arranged inside the box body. Moreover, the output end of the electric control box is electrically connected to two first cylinders, two second cylinders, a pneumatic valve, an exhaust fan, a heating unit, a first circulation fan, a refrigeration unit, a cooling water circuit and a second circulation fan.

[0021] The three - chamber high - low temperature shock test chamber with an up - down structure disclosed by the present utility model stacks a high - temperature chamber, a test chamber, and a low - temperature chamber in sequence. The high - temperature chamber is arranged at the top of the box body, the low - temperature chamber is arranged at the bottom of the box body, and the test chamber is arranged between the high - temperature chamber and the low - temperature chamber. Moreover, the high - temperature chamber and the low - temperature chamber are respectively communicated with the test chamber through the box body. Thus, during the high - temperature test process of the three - chamber high - low temperature shock test chamber with an up - down structure, the high - temperature air in the high - temperature chamber can conduct gas circulation with the internal gas environment of the test chamber; during the low - temperature process, the low - temperature air in the low - temperature chamber can conduct gas circulation with the internal gas environment of the test chamber. During the high - low temperature shock test process, the sample to be tested arranged inside the test chamber does not need to be moved to the high - temperature box or the low - temperature box by moving, effectively avoiding situations such as test errors, mechanical shocks, and uneven heating that may be caused by sample movement, thereby improving the effectiveness and result accuracy of the high - low temperature shock test. The box body is also provided with a first air - door mechanism and a second air - door mechanism, and the first air - door mechanism and the second air - door mechanism are arranged inside the box body; the first air - door mechanism is arranged between the high - temperature chamber and the test chamber; the second air - door mechanism is arranged between the low - temperature chamber and the test chamber. Compared with the traditional high - low temperature shock test chamber, in this embodiment, the traditional sliding - opening - and - closing air - door between the high - temperature chamber, the low - temperature chamber and the test chamber is cancelled, and a swinging - opening - and - closing air - door is adopted, thus effectively solving the problem that the sliding - opening - and - closing air - door is prone to incomplete closing, and further greatly improving the sealing performance of the first air - door and the second air - door, thereby improving the heating and cooling efficiency of the test chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a three - chamber high - low temperature shock test chamber with an up - down structure in an embodiment;

[0023] Figure 2 It is a schematic partial structural diagram of a three - chamber high - low temperature shock test chamber with an up - down structure in an embodiment;

[0024] Figure 3 It is a schematic partial structural diagram of a three - chamber high - low temperature shock test chamber with an up - down structure in an embodiment;

[0025] Figure 4 It is a schematic cross - sectional structural diagram of a three - chamber high - low temperature shock test chamber with an up - down structure in an embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following provides a detailed description of the specific embodiments of the present utility model in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0029] In the present utility model, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0032] Please refer to Figures 1 to 4 , the present utility model discloses a three-chamber high and low temperature shock test chamber with an up-and-down structure. The three-chamber high and low temperature shock test chamber with an up-and-down structure includes a box body 1, a high temperature chamber 2, a low temperature chamber 3 and a test chamber 4. The high temperature chamber 2, the low temperature chamber 3 and the test chamber 4 are all disposed inside the box body 1, so as to ensure the sealing performance of the high temperature chamber 2, the low temperature chamber 3 and the test chamber 4 respectively. Among them, the high temperature chamber 2, the test chamber 4 and the low temperature chamber 3 are stacked in sequence. The high temperature chamber 2 is disposed at the top of the box body 1, the low temperature chamber 3 is disposed at the bottom of the box body 1, and the test chamber 4 is disposed between the high temperature chamber 2 and the low temperature chamber 3; and, the high temperature chamber 2 and the low temperature chamber 3 are respectively communicated with the test chamber 4 through the box body 1, so that in the high temperature test process of the three-chamber high and low temperature shock test chamber with an up-and-down structure, the high temperature air in the high temperature chamber 2 can perform gas circulation with the internal gas environment of the test chamber 4; in the low temperature process, the low temperature air in the low temperature chamber 3 can perform gas circulation with the internal gas environment of the test chamber 4. In this embodiment, the outer walls of the high temperature chamber 2, the low temperature chamber 3 and the test chamber 4 are respectively coated with glass fiber cotton, so as to effectively improve the heat preservation performance of the high temperature chamber 2, the low temperature chamber 3 and the test chamber 4.

[0033] Specifically, the box body 1 is further provided with a first air door mechanism 11 and a second air door mechanism 12, and the first air door mechanism 11 and the second air door mechanism 12 are arranged inside the box body 1; the first air door mechanism 11 is arranged between the high-temperature chamber 2 and the test chamber 4 in a swinging manner; the second air door mechanism 12 is arranged between the low-temperature chamber 3 and the test chamber 4 in a swinging manner. When the temperature of the test chamber 4 in this embodiment is rising, the second air door mechanism 12 is closed, so that the test chamber 4 is relatively isolated from the low-temperature chamber 3. At this time, the first air door mechanism 11 is opened, and the high-temperature air inside the high-temperature chamber 2 circulates with the gas in the test chamber 4 through the first air door mechanism 11, so as to raise the temperature inside the test chamber 4 to the preset value; when the temperature of the test chamber 4 in this embodiment is falling, the first air door mechanism 11 is closed, so that the test chamber 4 is relatively isolated from the high-temperature chamber 2. At this time, the second air door mechanism 12 is opened, and the low-temperature air inside the low-temperature chamber 3 circulates with the gas in the test chamber 4 through the second air door mechanism 12, so as to lower the temperature inside the test chamber 4 to the preset value.

[0034] Furthermore, the first air door mechanism 11 includes two first air doors 111 and two first cylinders 112. The two first air doors 111 are respectively arranged on both sides of the top of the test chamber 4 and are respectively rotatably connected to the inner wall of the box body 1; the two first cylinders 112 respectively correspond to the two first air doors 111 and are respectively arranged on the surface of the box body 1; the output end of each first cylinder 112 is drivingly connected to the corresponding first air door 111, so that the first cylinder 112 can drive the corresponding first air door 111 to swing open and close relative to the inner wall of the box body 1. When the first cylinder 112 drives the first air door 111 to open, the high-temperature air inside the high-temperature chamber 2 enters the interlayer between the box body 1 and the high-temperature chamber 2 and enters the test chamber 4 through the two first air doors 111 on both sides.

[0035] Furthermore, the second air door mechanism 12 includes two second air doors 121 and two second cylinders 122. The two second air doors 121 are respectively arranged on both sides of the bottom of the test chamber 4 and are respectively rotatably connected to the inner wall of the box body 1; the two second cylinders 122 respectively correspond to the two second air doors 121 and are respectively arranged on the surface of the box body 1; the output end of each second cylinder 122 is drivingly connected to the corresponding second air door 121, so that the second cylinder 122 can drive the corresponding second air door 121 to swing open and close relative to the inner wall of the box body 1. When the second cylinder 122 drives the second air door 121 to open, the low-temperature air inside the low-temperature chamber 3 enters the interlayer between the box body 1 and the low-temperature chamber 3 and enters the test chamber 4 through the two second air doors 121 on both sides.

[0036] Compared with the traditional high and low temperature shock test chamber, in this embodiment, the traditional sliding opening and closing air door is cancelled between the high temperature chamber 2, the low temperature chamber 3 and the test chamber 4, and a swinging opening and closing air door is adopted, thus effectively solving the problem that the sliding opening and closing air door is prone to incomplete closing, and further greatly improving the sealing performance of the first air door 111 and the second air door 121, so as to improve the heating and cooling efficiency of the test chamber 4.

[0037] Furthermore, the test chamber 4 is provided with an air outlet 41 and a pneumatic valve 42. The air outlet 41 is arranged on one side wall of the test chamber 4, and the air outlet 41 penetrates through the corresponding side wall of the test chamber 4 and communicates with the inside of the test chamber 4; the pneumatic valve 42 is connected to the air outlet 41 to control the circulation between the internal gas environment of the test chamber 4 and the external atmosphere, so as to effectively improve the switching rate of the internal gas environment temperature of the test chamber 4 between high temperature, room temperature and low temperature. When the three-chamber high and low temperature shock test chamber with the up-and-down structure of this embodiment actually operates, the high temperature chamber 2 generates high temperature air flow with a preset temperature, which can lead to the test chamber 4 to heat the internal environment of the test chamber 4; the low temperature chamber 3 generates low temperature air flow with a preset temperature, which can lead to the test chamber 4 to cool the internal environment of the test chamber 4; the test chamber 4 selects to communicate with either the high temperature chamber 2 or the low temperature chamber 3 according to the actual heating and cooling requirements, so as to realize the high and low temperature shock test of the products to be tested inside the test chamber 4. During the high and low temperature shock test, the samples to be tested arranged inside the test chamber 4 do not need to be moved to the high temperature box or the low temperature box by moving to complete the high and low temperature shock, effectively avoiding the test errors, mechanical shocks and uneven heating that may be caused by the movement of the samples, thus improving the effectiveness and result accuracy of the high and low temperature shock test.

[0038] Furthermore, the test chamber 4 is also provided with an exhaust fan 43. The exhaust fan 43 is connected to one end of the air outlet 41 connected to the external atmosphere. In this embodiment, the exhaust fan 43 can provide driving force for the internal gas environment of the test chamber 4 to drive the internal gas of the test chamber 4 to circulate and exchange with the external gas environment. Specifically, the test chamber 4 is also provided with a smoke exhaust pipe 44. The smoke exhaust pipe 44 is arranged outside the test chamber 4, and the smoke exhaust pipe 44 communicates with the inside of the test chamber 4 through one side wall of the test chamber 4, so as to cooperate with the exhaust fan 43 and the air outlet 41 to realize the circulation between the internal gas and the external gas of the test chamber 4. In this embodiment, the gas, smoke, water vapor, etc. inside the test chamber 4 can be discharged to the outside of the test chamber 4 through the smoke exhaust pipe 44.

[0039] Furthermore, the three-chamber high and low temperature shock test chamber with an up-and-down structure further includes a heating unit 5, which is arranged inside the high-temperature chamber 2 to heat the air temperature inside the high-temperature chamber 2 to a preset temperature. Specifically, the high-temperature chamber 2 is provided with a first circulation fan 21, which is arranged on the side wall of the high-temperature chamber 2 and communicates the high-temperature chamber 2 with the box body 1. In practical applications, the heating unit 5 heats the air inside the high-temperature chamber 2, and the hot air is blown out through the first circulation fan 21 into the interlayer between the high-temperature chamber 2 and the box body 1, and then introduced into the test chamber 4 through the first air door 111 to raise the internal gas environment of the test chamber 4 to the preset temperature value.

[0040] Furthermore, the three-chamber high and low temperature shock test chamber with an up-and-down structure further includes a refrigeration unit 6, a cooling water circuit 7 and an evaporator 8. The refrigeration unit 6 and the cooling water circuit 7 are arranged inside the interlayer between the low-temperature chamber 3 and the box body 1; the evaporator 8 is arranged inside the low-temperature chamber 3; the refrigeration unit 6 is connected to the evaporator 8 through a pipeline; the cooling water circuit 7 is connected to the refrigeration unit 6 to dissipate heat and cool the refrigeration unit 6. Specifically, the low-temperature chamber 3 is provided with a second circulation fan 31, which is arranged on the side wall of the low-temperature chamber 3 and communicates the low-temperature chamber 3 with the box body 1. In practical applications, the refrigeration unit 6 transports the low-temperature and high-pressure refrigerant to the evaporator 8. After the refrigerant evaporates in the evaporator 8, it forms high-temperature and low-pressure steam and returns to the refrigeration unit 6. The cooling water circuit 7 dissipates heat and cools the refrigeration unit 6 and the refrigerant inside it to complete a refrigeration cycle. During this process, the air inside the low-temperature chamber 3 is cooled to the preset temperature through the evaporator 8, and the cold air is blown out through the second circulation fan 31 into the interlayer between the low-temperature chamber 3 and the box body 1, and then introduced into the test chamber 4 through the second air door 121 to lower the internal gas environment of the test chamber 4 to the preset temperature value.

[0041] Furthermore, the three-chamber high and low temperature shock test chamber with an up-and-down structure further includes an electric control box 9, which is arranged inside the box body 1. Moreover, the output end of the electric control box 9 is electrically connected to two first cylinders 112, two second cylinders 122, a pneumatic valve 42, an exhaust fan 43, a heating unit 5, a first circulation fan 21, a refrigeration unit 6, a cooling water circuit 7 and a second circulation fan 31, so that the electric control box 9 realizes the automatic control of the overall three-chamber high and low temperature shock test chamber with an up-and-down structure.

[0042] In summary, the three-chamber high and low temperature shock test chamber with an up-and-down structure disclosed by the present utility model stacks the high temperature chamber, the test chamber, and the low temperature chamber in sequence. The high temperature chamber is arranged at the top of the box body, the low temperature chamber is arranged at the bottom of the box body, and the test chamber is arranged between the high temperature chamber and the low temperature chamber. Moreover, the high temperature chamber and the low temperature chamber are respectively communicated with the test chamber through the box body, so that during the high temperature test of the three-chamber high and low temperature shock test chamber with an up-and-down structure, the high temperature air in the high temperature chamber can circulate with the internal gas environment of the test chamber; during the low temperature process, the low temperature air in the low temperature chamber can circulate with the internal gas environment of the test chamber. During the high and low temperature shock test, the sample to be tested arranged inside the test chamber does not need to be moved to the high temperature box or the low temperature box by moving to complete the high and low temperature shock, effectively avoiding situations such as test errors, mechanical shocks, and uneven heating that may be caused by the movement of the sample, thereby improving the effectiveness and result accuracy of the high and low temperature shock test. The box body is also provided with a first air door mechanism and a second air door mechanism, and the first air door mechanism and the second air door mechanism are arranged inside the box body; the first air door mechanism is arranged between the high temperature chamber and the test chamber; the second air door mechanism is arranged between the low temperature chamber and the test chamber. Compared with the traditional high and low temperature shock test chamber, in this embodiment, the traditional sliding open-and-close air door between the high temperature chamber, the low temperature chamber and the test chamber is cancelled, and a swinging open-and-close air door is adopted, thus effectively solving the problem that the sliding open-and-close air door is prone to incomplete closing, and further greatly improving the sealing performance of the first air door and the second air door, thereby improving the heating and cooling efficiency of the test chamber.

[0043] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0044] The above-described embodiments only represent several implementation manners of the present utility model, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A three-chamber high and low temperature shock test chamber with an upper and lower structure, characterized in that Comprising: A box body, a high-temperature chamber, a low-temperature chamber and a test chamber. The high-temperature chamber, the low-temperature chamber and the test chamber are all arranged inside the box body. The high-temperature chamber, the test chamber and the low-temperature chamber are stacked in sequence. The high-temperature chamber is arranged at the top of the box body, the low-temperature chamber is arranged at the bottom of the box body, and the test chamber is arranged between the high-temperature chamber and the low-temperature chamber. And the high-temperature chamber and the low-temperature chamber are respectively communicated with the test chamber through the box body. The box body is also provided with a first air door mechanism and a second air door mechanism. The first air door mechanism and the second air door mechanism are arranged inside the box body. The first air door mechanism is arranged between the high-temperature chamber and the test chamber in a swinging manner. The second air door mechanism is arranged between the low-temperature chamber and the test chamber in a swinging manner.

2. The three-chamber high and low temperature shock test chamber with an up-and-down structure according to claim 1, characterized in that, The first air door mechanism includes two first air doors and two first cylinders. The two first air doors are respectively arranged on both sides of the top of the test chamber and are respectively rotatably connected to the inner wall of the box body. The two first cylinders are respectively corresponding to the two first air doors and are respectively arranged on the surface of the box body. The output end of each first cylinder is drivingly connected to the corresponding first air door, so that the first cylinder can drive the corresponding first air door to swing and open and close relative to the inner wall of the box body.

3. The three-chamber high and low temperature shock test chamber with an up-and-down structure according to claim 2, characterized in that, The second air door mechanism includes two second air doors and two second cylinders. The two second air doors are respectively arranged on both sides of the bottom of the test chamber and are respectively rotatably connected to the inner wall of the box body. The two second cylinders are respectively corresponding to the two second air doors and are respectively arranged on the surface of the box body. The output end of each second cylinder is drivingly connected to the corresponding second air door, so that the second cylinder can drive the corresponding second air door to swing and open and close relative to the inner wall of the box body.

4. The three-chamber high and low temperature shock test chamber with an upper and lower structure according to claim 3, wherein The test chamber is provided with an exhaust port and a pneumatic valve. The exhaust port is arranged on one side wall of the test chamber, and the exhaust port penetrates through the corresponding side wall of the test chamber and communicates with the inside of the test chamber. The pneumatic valve is connected to the exhaust port.

5. The three-chamber high and low temperature shock test chamber with upper and lower structures according to claim 4, characterized in that The test chamber is also provided with an exhaust fan, and the exhaust fan is connected to the end of the exhaust port connecting to the external atmosphere.

6. The three-chamber high and low temperature shock test chamber with an upper and lower structure according to claim 5, characterized in that, The test chamber is also provided with a smoke exhaust pipe. The smoke exhaust pipe is arranged outside the test chamber, and the smoke exhaust pipe communicates with the inside of the test chamber through one side wall of the test chamber.

7. The three-chamber high and low temperature shock test chamber with an up-and-down structure according to claim 6, characterized in that, The three-chamber high and low temperature shock test chamber with the above structure also includes a heating unit, and the heating unit is arranged inside the high-temperature chamber.

8. The three-chamber high and low temperature shock test chamber with upper and lower structures according to claim 7, characterized in that, The high-temperature chamber is provided with a first circulation fan. The first circulation fan is arranged on the side wall of the high-temperature chamber and communicates the high-temperature chamber with the box body.

9. The three-chamber high and low temperature shock test chamber with upper and lower structures according to claim 8, characterized in that, The three-chamber high and low temperature shock test chamber with the above structure also includes a refrigeration unit, a cooling water circuit and an evaporator. The refrigeration unit and the cooling water circuit are arranged inside the sandwich layer between the low-temperature chamber and the box body. The evaporator is arranged inside the low-temperature chamber. The refrigeration unit is connected to the evaporator through a pipeline. The cooling water circuit is connected to the refrigeration unit.

10. The three-chamber high and low temperature shock test chamber with upper and lower structures according to claim 9, characterized in that, The low-temperature chamber is provided with a second circulation fan, which is arranged on the side wall of the low-temperature chamber and communicates the low-temperature chamber with the box body.

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