Environmental test chamber drainage pressure equalization improvement structure

Abstract

This utility model provides a drainage pressure equalization improvement structure for an environmental test chamber, including an outer chamber, an inner chamber, an insulation layer, an L-shaped pipe, and a floating ball. The insulation layer is formed between the outer chamber and the inner chamber, including a connected back layer and a bottom layer, as well as a top layer connected to the top of the back layer. One side of the L-shaped pipe extends along the back layer, and the other end extends along the bottom layer. One end of the L-shaped pipe extends to the top of the outer chamber and is connected to the atmosphere. One end of the L-shaped pipe is configured as a pipe joint, which is connected to an air duct extending into the air duct at one end and to the bottom surface of the outer chamber at the other end, where a valve is installed. The floating ball is disposed inside the L-shaped pipe. This application can not only achieve pressure equalization by utilizing the gap between the L-shaped pipe and the floating ball, but the floating ball can also buffer the exhaust gas, and the condensate generated by the pre-cooling of humid air can be discharged along the L-shaped pipe.

Description

Technical Field

[0001] This utility model relates to a test chamber, and more particularly to a drainage pressure equalization improvement structure for an environmental test chamber. Background Technology

[0002] Based on the influence of the pressure difference between the inside and outside of the test chamber and the opening and closing of the door on the internal pressure, the pressure relief hole originally located on the top of the outer chamber was independent. When the internal temperature is high and the external temperature is low, condensation can easily form at the pressure relief hole when the chamber door is opened or closed. The condensation dripping into the chamber can contaminate the equipment inside, affecting the test environment and the service life of the equipment. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a drainage and pressure equalization improvement structure for an environmental test chamber. An L-shaped pipe allows exhaust gas to bypass the insulation layer, with the drain hole connected to the exhaust hole. Condensate enters the L-shaped pipe from the air duct and exits from the bottom of the outer casing, preventing condensate from affecting the equipment inside the chamber. Simultaneously, a floating ball is added within the L-shaped pipe to balance the pressure inside the chamber. The technical solution adopted by this utility model is as follows: A drainage pressure equalization improvement structure for an environmental test chamber includes: outer box; An inner box is disposed inside the outer box. The inner box is provided with a perforated partition, which divides the space inside the inner box into a test space and an air duct. An insulating interlayer is formed between the outer casing and the inner casing, including a connected back interlayer and a bottom interlayer; An L-shaped pipe has one side extending along the back interlayer and the other end extending along the bottom interlayer. One end of the L-shaped pipe extends to the top of the outer casing and connects to the atmosphere. One end of the L-shaped pipe is configured as a pipe joint. The pipe joint connects to the air duct, with one end extending into the air duct and the other end extending to the bottom surface of the outer casing and where a valve is installed. A floating ball is placed inside the L-shaped pipe, and its diameter is smaller than the inner diameter of the L-shaped pipe.

[0004] Furthermore, the insulation interlayer also includes a top interlayer connected to the top of the back interlayer.

[0005] Furthermore, the top of the outer casing is provided with a motor guard for protecting the motor.

[0006] Furthermore, the outer casing is hinged to a door on the front, and a control panel is provided on the front of the door. The test space is directly opposite the door.

[0007] Furthermore, the pipe fitting is a 1 / 4-inch internal thread.

[0008] Advantages of this utility model: Not only can the gap between the L-shaped pipe and the floating ball achieve the pressure equalization effect, but the floating ball can also buffer the exhaust. The condensate produced by the pre-cooling of humid air can also be discharged along the L-shaped pipe, solving the problem of condensate dripping from the original pressure equalization hole or being blown onto the product by the wind, which affects the product test results. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structural composition of this utility model.

[0010] In the diagram: 100 - outer casing, 200 - inner casing, 210 - perforated partition, 220 - test space, 230 - air duct, 300 - insulation interlayer, 310 - back interlayer, 320 - bottom interlayer, 330 - top interlayer, 400 - L-shaped pipe, 410 - pipe joint, 500 - floating ball, 600 - motor, 700 - door, 710 - control panel. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0012] Please see the appendix Figure 1 This application proposes a drainage pressure equalization improvement structure for an environmental test chamber, including an outer chamber 100, an inner chamber 200, an insulation interlayer 300, an L-shaped pipe 400, and a floating ball 500. The inner chamber 200 is disposed inside the outer chamber 100, and a perforated partition 210 is provided inside the inner chamber 200, which divides the space inside the inner chamber 200 into a test space 220 and an air duct 230. The insulation interlayer 300 is formed between the outer chamber 100 and the inner chamber 200, including a connected back interlayer 310 and a bottom interlayer 320, and a connection to the back interlayer 310. A top interlayer 330 at the top of layer 310; an L-shaped pipe 400 extends along one side of the back interlayer 310 and the other end extends along the bottom interlayer 320. One end of the L-shaped pipe 400 extends to the top of the outer casing 100 and connects to the atmosphere. One end of the L-shaped pipe 400 is configured as a pipe connector 410. The pipe connector 410 connects to the air duct 230, with one end extending into the air duct 230 and the other end extending to the bottom surface of the outer casing 100 and a valve is installed thereon. A floating ball 500 is disposed inside the L-shaped pipe 400, and its diameter is smaller than the inner diameter of the L-shaped pipe 400.

[0013] In one specific embodiment, as shown in the appendix Figure 1As shown, the outer casing 100 and the inner casing 200 overlap at the front. The insulation layer 300 forms the lower, back, and upper parts of the inner casing 200. The perforated partition 210 inside the inner casing allows air to flow between the test space 220 and the air duct 230. A motor installed on the top of the outer casing 100 drives the fan blades inside the air duct 230 to rotate, causing air to circulate between the test space 220 and the air duct 230. The working principle of the test chamber and the temperature and humidity system inside the equipment have been disclosed in the prior art, and this application will not elaborate on the installation positions of the internal equipment. By utilizing the space of the original insulation layer 300, the L-shaped pipe 400 is hidden, allowing the pressure equalization hole originally installed on the rear top of the outer casing to be connected from the back of the inner casing 200 to the lower side in the form of a pipe. Combined with the floating ball 500, this achieves the dual technical effects of pressure equalization and condensate drainage.

[0014] Specifically, the application scenarios where the L-shaped pipe 400 is combined with the floating ball 500 to achieve pressure equalization or condensate flow diversion include: In a test environment where the compressor is not turned on but a stable required temperature (e.g., 80°C) is needed, the heating wire inside the chamber relies on solid-state control to raise the temperature. Therefore, the temperature inside the chamber may rise to exceed the required temperature (e.g., rise to 85°C). At this time, the gap between the L-shaped pipe 400 and the floating ball 500 is used to draw in outside air for temperature neutralization, which can quickly adjust the temperature inside the chamber to the required temperature. In low-temperature testing environments (such as -40℃), there is a temperature difference between the inside of the chamber and the outside temperature (such as 25℃). Under negative pressure, the floating ball 500 gradually approaches the pipe joint 410, reducing the entry of outdoor humid air into the chamber and thus reducing the frost formation inside the chamber. When conducting high temperature and high humidity tests, without turning on the refrigeration compressor, some humid air needs to be released when the temperature inside the chamber is too high. When the humidity is high, the air pressure is high. Under the action of air pressure, the floating ball 500 moves upward along the L-shaped pipe 400, increasing the pressure equalization distance. The humid air is discharged from the gap between the floating ball 500 and the L-shaped pipe 400. At the same time, the floating ball 500 acts as an exhaust buffer to prevent a large amount of humid air from being discharged in a short period of time. The condensate produced by the pre-cooling of the humid air flows along the L-shaped pipe 400 and is finally discharged through the bottom of the pipe joint 410, solving the problem of condensate dripping from the original pressure equalization hole or being blown onto the product by the wind, which affects the product test results.

[0015] As a specific embodiment of this application, the top of the outer casing 100 is provided with a motor cover 600 for protecting the motor. The installation position of the motor cover 600 is not limited by the original pressure equalization hole position, and more installation space can be reserved for the motor. Therefore, the parameters of the holes in the perforated partition 210 can be changed with the changes in the motor installation position and the fan blade position, which is conducive to achieving the best air intake effect.

[0016] As a specific embodiment of this application, the outer casing 100 is hinged to a door 700 on its front side, and a control panel 710 is provided on the front side of the door 700. The test space 220 is directly opposite the door 700. Opening the door 700 exposes the test space 220, allowing the test product to be placed inside. Closing the door 700 seals the test space 220, and the test chamber is then opened for environmental testing. Pressure fluctuations inside the chamber are caused by the opening and closing of the door 700.

[0017] As a specific embodiment of this application, the pipe fitting 410 is a 1 / 4-inch internal thread. The 1 / 4-inch internal thread is a standard part, highly replaceable, and easy to replace. Its top passes through the bottom plate of the inner casing 200 and the bottom plate of the outer casing 100, connecting the air duct 230 to the atmosphere. By installing a valve at the pipe fitting 410, a large amount of air leakage from the lower end of the pipe fitting 410 is prevented when condensate is not discharged.

[0018] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A drainage pressure equalization improvement structure for an environmental test chamber, characterized in that, include: outer box(100); An inner box (200) is disposed inside the outer box (100). A perforated partition (210) is provided inside the inner box (200), which divides the space inside the inner box (200) into a test space (220) and an air duct (230). An insulation interlayer (300) is formed between the outer casing (100) and the inner casing (200), including a connected back interlayer (310) and a bottom interlayer (320). An L-shaped pipe (400) has one side extending along the back interlayer (310) and the other end extending along the bottom interlayer (320). One end of the L-shaped pipe (400) extends to the top of the outer casing (100) and connects to the atmosphere. One end of the L-shaped pipe (400) is configured as a pipe joint (410). The pipe joint (410) is connected to the air duct (230) with one end extending into the air duct (230) and the other end extending to the bottom surface of the outer casing (100) and a valve is installed thereon. A floating ball (500) is disposed inside the L-shaped pipe (400), and its diameter is smaller than the inner diameter of the L-shaped pipe (400).

2. The drain equalizing improvement structure for an environmental test chamber according to claim 1, characterized by: The insulation interlayer (300) also includes a top interlayer (330) connected to the top of the back interlayer (310).

3. The drain equalizing improvement structure for an environmental test chamber according to claim 1, characterized by: The top of the outer casing (100) is provided with a motor cover (600) for protecting the motor.

4. The drain equalizing improvement structure for an environmental test chamber according to claim 1, characterized by: The outer casing (100) has a door (700) hinged to its front, and a control panel (710) is provided on the front of the door (700). The test space (220) is directly opposite the door (700).

5. The drain equalizing improvement structure for an environmental test chamber according to any one of claims 1 to 4, characterized in that: The pipe fitting (410) is a 1 / 4-inch internal thread.

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