Sandwich type air duct temperature control structure of test box

Abstract

The utility model discloses an interlayer type air duct temperature control structure of a test chamber, which comprises an inner container and an outer shell covering the outer part of the inner container, a hollow interlayer is arranged between the outer shell and the inner container, the outer shell is provided with an air inlet and an air outlet which are communicated with the hollow interlayer, and a circulation channel is connected between the air inlet and the air outlet. A fan is arranged in the circulation channel and used for enabling airflow to circularly flow between the circulation channel and the hollow interlayer, and a heating device and / or a refrigerating device are / is installed in the circulation channel. The utility model has the beneficial effects that when the heating device or the refrigerating device is started, heat energy or cold energy can circularly flow between the hollow interlayer and the circulating channel under the action of the fan, so that the temperature of the hollow interlayer can be increased or decreased, and the temperature of the hollow interlayer can be radiated into the inner container, thereby realizing the temperature increasing and decreasing of the inner container.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental test chambers, in particular to a sandwich air duct temperature control structure for a test chamber. Background Art

[0002] An environmental test chamber is a type of testing equipment that can simulate different environmental parameters. By placing a product in such a chamber and adjusting the environmental parameters within the chamber, the product's performance in the simulated environment can be tested and evaluated. Temperature test chambers are specifically designed to simulate different ambient temperatures, allowing you to test the product's operating conditions at set temperatures.

[0003] Traditional temperature test chambers mainly consist of a workroom and a temperature chamber, wherein the temperature chamber is equipped with a heating module, a cooling module, and a circulating fan, and the product to be tested is placed in the workroom. The heating module and the cooling module generate heat energy or cold energy, and then, under the action of the circulating fan, the airflow circulates between the workroom and the temperature chamber, thereby achieving the purpose of heating and cooling the workroom. However, in the fields of aerospace, automobiles, and military, the testing of some products requires the product to be in a vacuum or negative pressure state, that is, the workroom is a sealed structure with no airflow passing through it. Traditional heating and cooling methods can no longer heat and cool the workroom. Utility Model Content

[0004] In view of this, the utility model provides a test chamber sandwich air duct temperature control structure, which can achieve heating and cooling of the working room in a negative pressure environment.

[0005] To achieve the above purpose, the technical solution of this utility model is as follows:

[0006] A test chamber sandwich duct temperature control structure, the key of which is that it includes an inner liner and an outer shell covering the outside of the inner liner, wherein the inner liner is used to place the product to be tested, and a hollow interlayer is provided between the outer shell and the inner liner, and the outer shell is provided with an air inlet and an air outlet both connected to the hollow interlayer, a circulation channel is connected between the air inlet and the air outlet, a fan is arranged in the circulation channel, and the fan is used to circulate air between the circulation channel and the hollow interlayer, and a heating device and / or a cooling device is installed in the circulation channel.

[0007] With the above structure, when it is necessary to heat the inside of the inner tank under a negative pressure environment, the heating device is turned on. Under the action of the fan, the heat energy generated by the heating device can circulate between the circulation channel → air inlet → hollow interlayer → air outlet → circulation channel, thereby heating the hollow interlayer, and the temperature of the hollow interlayer can be radiated to the inside of the inner tank, thereby achieving the heating of the inner tank.

[0008] Preferably, the inner liner and outer shell are both rectangular structures, with hollow interlayers distributed on the upper, lower, left, right, and rear sides of the inner liner, forming an upper interlayer, a lower interlayer, a left interlayer, a right interlayer, and a rear interlayer, respectively. An air inlet duct and an air outlet duct are respectively provided in the upper and lower interlayers, one end of each of which is limited to pass through the rear side of the outer shell, and an air inlet and an air outlet are respectively provided at the outer ends of the air inlet duct and the air outlet duct; and first air holes are distributed on the air inlet duct and the air outlet duct. With the above structure, after the circulating air enters the air inlet duct through the air inlet, it can flow out through the first air holes on both sides, and enter the left interlayer, the right interlayer, and the rear interlayer from the upper interlayer, and finally enter the air outlet duct of the lower interlayer to merge and flow out.

[0009] Preferably, hollow tubes are fixedly installed in the upper interlayer, lower interlayer, left interlayer, right interlayer and rear interlayer, and second air holes are distributed on the side walls of the hollow tubes. The above structure ensures that the temperature of the circulating air flow can be evenly transferred to the interior of the inner tank.

[0010] Preferably, the inner liner and the front end of the outer shell are connected by a door frame, to which the test chamber door is mounted; the inner ends of the hollow tubes in the upper, lower, left, and right interlayers abut against the inner side of the door frame. With this structure, the circulating airflow transfers heat through the door frame to the door at the front end of the inner liner, thereby ensuring sufficient heat exchange across all surfaces of the inner liner.

[0011] Preferably, the hollow tubes in the upper interlayer, the lower interlayer, the left interlayer, the right interlayer and the rear interlayer are arranged in two layers, and the two layers of hollow tubes on the same interlayer are vertically staggered.

[0012] Preferably, the air inlet pipe is located at the top of the upper interlayer, and the air outlet pipe is located at the bottom of the lower interlayer.

[0013] Preferably, the plurality of hollow tubes in the hollow interlayer can be combined to form a rectangular frame. The above structure improves the structural strength of the inner liner.

[0014] Preferably, the first air hole array is distributed on both side walls of the air inlet duct and the air outlet duct.

[0015] Preferably, the hollow tube is a square tube.

[0016] As a preference, the hollow tube is made of stainless steel. The above structure ensures heat transfer efficiency.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. Using the interlayer air duct temperature control structure of the test chamber provided by the present invention, when the temperature inside the liner needs to be increased under a negative pressure environment, the heating device is turned on. Under the action of the fan, the heat energy generated by the heating device can circulate between the circulation channel → air inlet → hollow interlayer → air outlet → circulation channel, thereby increasing the temperature of the hollow interlayer. The temperature of the hollow interlayer can then be radiated to the interior of the liner, thereby increasing the temperature of the liner. Similarly, when the temperature inside the liner needs to be reduced under a negative pressure environment, the refrigeration device is turned on. Under the action of the fan, the air flow circulates between the hollow interlayer and the circulation channel, thereby reducing the temperature of the hollow interlayer.

[0019] 2. The sandwich-style air duct temperature control structure of the test chamber provided by this utility model uses the air inlet and outlet ducts and a number of hollow tubes to serve as the working chamber framework, enhancing the structural strength of the inner tank. At the same time, the air holes on the air inlet and outlet ducts and the side walls of the hollow tubes enable the circulating air to escape evenly within the hollow interlayer, fully contacting all surfaces of the inner tank, ensuring sufficient and uniform heat exchange. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the test chamber sandwich air duct temperature control structure;

[0021] Figure 2 This is a schematic diagram of the test chamber's sandwich air duct temperature control structure (circulation channel 3 is hidden);

[0022] Figure 3 This is a three-dimensional cross-sectional view of the test chamber's sandwich-type air duct temperature control structure (circulation channel 3 is hidden);

[0023] Figure 4 Another three-dimensional cross-sectional view of the test chamber's sandwich-type air duct temperature control structure (circulation channel 3 is hidden);

[0024] Figure 5 A structural diagram showing the arrangement of the hollow tube 5;

[0025] Figure 6 for Figure 5 A partial enlarged view of point A in the middle;

[0026] Figure 7 This is another structural diagram of the test chamber sandwich duct temperature control structure (the circulation channel 3 and the outer shell 2 are hidden). DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0028] like Figures 1 to 3As shown, a test chamber sandwich air duct temperature control structure includes an inner liner 1 and an outer shell 2 covering the outer liner 1, wherein the inner liner 1 is used to place the product to be tested. There is a hollow interlayer 4 between the outer shell 2 and the inner liner 1, and the outer shell 2 is provided with an air inlet 2a and an air outlet 2b both connected to the hollow interlayer 4. Figure 1 As can be seen, a circulation channel 3 is connected between the air inlet 2a and the air outlet 2b. A fan 3a is disposed within the circulation channel 3, which circulates air between the circulation channel 3 and the hollow interlayer 4. A heating device 3b and / or a cooling device 3c are installed within the circulation channel 3. In practical applications, both the heating device 3b and the cooling device 3c can be installed simultaneously, or only one of them can be selected.

[0029] Based on the above structural design, the working principle of the test chamber's sandwich-type air duct temperature control structure is as follows: the inner liner 1 is a closed chamber. When the temperature inside the inner liner 1 under a negative pressure environment needs to be increased, the heating device 3b is turned on. Under the action of the fan 3a, the heat energy generated by the heating device 3b can circulate in the circulation channel 3 → air inlet 2a → hollow interlayer 4 → air outlet 2b → circulation channel 3, thereby increasing the temperature of the hollow interlayer 4. The temperature of the hollow interlayer 4 can also be radiated to the interior of the inner liner 1, thereby increasing the temperature of the inner liner 1. Similarly, when the temperature inside the inner liner 1 under a negative pressure environment needs to be reduced, the refrigeration device 3c is turned on. Under the action of the fan 3a, the airflow circulates between the hollow interlayer 4 and the circulation channel 3, thereby reducing the temperature of the hollow interlayer 4.

[0030] For example Figures 2 to 4 As shown, the inner liner 1 and the outer shell 2 are both rectangular structures, and the hollow interlayers 4 are distributed on the upper side, lower side, left side, right side and rear side of the inner liner 1, forming an upper interlayer 4a, a lower interlayer 4b, a left interlayer 4c, a right interlayer 4d and a rear interlayer 4e respectively. Figure 1 As can be seen, an air inlet duct 6 is provided within the upper interlayer 4a, and an air outlet duct 7 is provided within the lower interlayer 4b. One end of each of the air inlet duct 6 and the air outlet duct 7 is restricted to pass through the rear side of the outer shell 2. The air inlet 2a and air outlet 2b are located at the outer ends of the air inlet duct 6 and the air outlet duct 7, respectively. First air holes a are distributed throughout the air inlet duct 6 and the air outlet duct 7. In this embodiment, the first air holes a are arranged in an array on the left and right walls of the air inlet duct 6 and the air outlet duct 7. After entering the air inlet 2a, the circulating airflow can flow out through the first air holes a on both sides, enter the left interlayer 4c, the right interlayer 4d, and the rear interlayer 4e through the upper interlayer 4a, and finally enter the air outlet duct 7 of the lower interlayer 4b to merge and flow out.

[0031] To ensure that the temperature of the circulating air flow can be evenly transferred to the interior of the inner tank 1, Figures 3 to 5As shown, the upper interlayer 4a, the lower interlayer 4b, the left interlayer 4c, the right interlayer 4d and the rear interlayer 4e are all provided with hollow tubes 5. In this embodiment, the hollow tubes 5 of each interlayer are distributed in an array. Figure 6 Second air holes b are distributed on the sidewalls of the hollow tubes 5. This design allows the circulating airflow entering the air inlet duct 6 to flow through the first air holes a on both sides into the hollow tubes 5 on either side. It is then evenly distributed to the hollow tubes 5 in the left interlayer 4c, right interlayer 4d, and rear interlayer 4e, finally converging into the air outlet duct 7 in the lower interlayer 4b and exiting through the air outlet 2b. During this process, the airflow is able to evenly escape within the hollow interlayer 4 and fully contact all surfaces of the inner liner 1, increasing the time the airflow remains in the hollow interlayer 4 and ensuring sufficient and uniform heat exchange.

[0032] Please refer to Figure 3 and Figure 5 The inner liner 1 and the front end of the outer shell 2 are connected by a door frame plate 8, and the door of the test box is installed on the door frame plate 8. The inner ends of the hollow tubes 5 in the upper interlayer 4a, the lower interlayer 4b, the left interlayer 4c, and the right interlayer 4d are in contact with the inner side of the door frame plate 8. With this design, the upper interlayer 4a, the lower interlayer 4b, the left interlayer 4c, and the right interlayer 4d are all connected to the door frame plate 8. The circulating airflow in each of the hollow tubes 5 in the upper interlayer 4a, the lower interlayer 4b, the left interlayer 4c, and the right interlayer 4d that are in contact with the door frame plate 8 can transfer the temperature to the door at the front end of the inner liner 1 through the door frame plate 8 in a heat conduction manner, thereby ensuring that all surfaces of the inner liner 1 can be fully heat exchanged and ensuring uniform heat transfer.

[0033] Re-attend Figure 5 and Figure 7 The hollow tubes 5 within the hollow interlayer 4 can be combined to form a rectangular structure along the circumference of the inner liner 1, and two connected hollow tubes 5 can communicate with each other. This design ensures uniform airflow while also ensuring that the air inlet duct 6, air outlet duct 7, and a number of hollow tubes 5 serve as the working chamber skeleton, enhancing the structural strength of the inner liner 1.

[0034] like Figure 5 and Figure 7 As shown, the hollow tubes 5 in the upper interlayer 4a, the lower interlayer 4b, the left interlayer 4c, the right interlayer 4d, and the rear interlayer 4e are each arranged in two layers, and the two layers of hollow tubes 5 on the same interlayer are arranged vertically and staggered. In this embodiment, the air inlet duct 6 is located at the top of the upper interlayer 4a, and the air outlet duct 7 is located at the bottom of the lower interlayer 4b, that is, the air inlet duct 6 is located in the middle of the duct arranged in the top layer, and the air outlet duct 7 is located in the middle of the duct arranged in the bottom layer. The advantage of this design is that the circulating airflow can stay in the space enclosed by each staggered arrangement of the hollow tubes 5, further increasing the time the airflow flows through each interlayer, so that the airflow can more fully exchange heat with each surface of the inner liner 1, further improving the uniformity of temperature radiation.

[0035] like Figure 6 As shown, in this embodiment, each hollow tube 5 is a square tube. Installing an array of square-structured hollow tubes 5 on each surface of the inner liner 1 can further improve the structural strength of the inner liner 1.

[0036] In this embodiment, the hollow tube 5 is made of stainless steel to ensure heat transfer efficiency.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention. Such changes fall within the scope of protection of the present invention.

Claims

1. A test chamber sandwich air duct temperature control structure, characterized in that: The invention comprises an inner liner (1) and an outer shell (2) arranged outside the inner liner (1), wherein the inner liner (1) is used to place a product to be tested, a hollow interlayer (4) is provided between the outer shell (2) and the inner liner (1), an air inlet (2a) and an air outlet (2b) are provided on the outer shell (2), both of which are connected to the hollow interlayer (4), a circulation channel (3) is connected between the air inlet (2a) and the air outlet (2b), a fan (3a) is arranged in the circulation channel (3), and the fan (3a) is used to circulate air between the circulation channel (3) and the hollow interlayer (4), and a heating device (3b) and / or a cooling device (3c) are installed in the circulation channel (3).

2. The test chamber sandwich air duct temperature control structure according to claim 1, characterized in that: The inner liner (1) and the outer shell (2) are both rectangular structures. The hollow interlayer (4) is distributed on the upper side, lower side, left side, right side and rear side of the inner liner (1), respectively forming an upper interlayer (4a), a lower interlayer (4b), a left interlayer (4c), a right interlayer (4d) and a rear interlayer (4e). An air inlet pipe (6) and an air outlet pipe (7) are respectively provided in the upper interlayer (4a) and the lower interlayer (4b). One end of the air inlet pipe (6) and the air outlet pipe (7) are both limited to pass through the rear side of the outer shell (2). The air inlet (2a) and the air outlet (2b) are respectively provided at the outer ends of the air inlet pipe (6) and the air outlet pipe (7); and first air holes (a) are distributed on the air inlet pipe (6) and the air outlet pipe (7).

3. The test chamber sandwich air duct temperature control structure according to claim 2, characterized in that: Hollow tubes (5) are fixedly provided in the upper interlayer (4a), the lower interlayer (4b), the left interlayer (4c), the right interlayer (4d) and the rear interlayer (4e), and second air holes (b) are distributed on the side walls of the hollow tubes (5).

4. The test chamber sandwich air duct temperature control structure according to claim 3, characterized in that: The inner liner (1) and the front end of the outer shell (2) are connected via a door frame plate (8), and the door of the test box is mounted on the door frame plate (8); the inner ends of the hollow tubes (5) in the upper interlayer (4a), the lower interlayer (4b), the left interlayer (4c), and the right interlayer (4d) abut against the inner side of the door frame plate (8).

5. The test chamber sandwich air duct temperature control structure according to claim 3, characterized in that: The hollow tubes (5) in the upper interlayer (4a), the lower interlayer (4b), the left interlayer (4c), the right interlayer (4d) and the rear interlayer (4e) are each arranged in two layers, and the two layers of hollow tubes (5) on the same interlayer are arranged vertically and staggered.

6. The test chamber sandwich air duct temperature control structure according to claim 5, characterized in that: The air inlet pipe (6) is located at the top of the upper interlayer (4a), and the air outlet pipe (7) is located at the bottom of the lower interlayer (4b).

7. The test chamber sandwich air duct temperature control structure according to claim 3, characterized in that: The plurality of hollow tubes (5) in the hollow interlayer (4) can be combined to form a rectangular frame.

8. The test chamber sandwich air duct temperature control structure according to claim 2, characterized in that: The first air holes (a) are arrayed on both side walls of the air inlet pipe (6) and the air outlet pipe (7).

9. The test chamber sandwich air duct temperature control structure according to claim 3, characterized in that: The hollow tube (5) is a square tube.

10. The test chamber sandwich air duct temperature control structure according to claim 3, characterized in that: The hollow tube (5) is made of stainless steel.

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