Drainage system for environmental test chamber and environmental test chamber

Abstract

The application discloses an environmental test chamber drainage system and an environmental test chamber, and belongs to the technical field of environmental test chambers. The application is designed to solve the problems of existing drainage structure pipelines, such as air blockage leading to difficult drainage, and low-difference water being unable to be drained. The environmental test chamber drainage system comprises a first water collecting pipe, a first water collecting exhaust port arranged on the first water collecting pipe, a second water collecting pipe, and a drainage pipeline. When the first water collecting pipe drains water into the drainage pipeline, kinetic energy negative pressure is formed, and the kinetic energy negative pressure is used to suck the drainage in the second water collecting pipe. The environmental test chamber drainage system and the environmental test chamber can form kinetic energy negative pressure when the first water collecting pipe drains water into the drainage pipeline, and can suck the drainage in the second water collecting pipe. The first water collecting pipe is connected with the first water collecting exhaust port at a high point, and the bubbles collected in the first water collecting pipe can be discharged through the first water collecting exhaust port, so that the proportion of gas is reduced, and the air resistance of water flow is reduced.

Description

Technical Field

[0001] This invention relates to the field of environmental test chamber technology, and more particularly to a drainage system for environmental test chambers and an environmental test chamber. Background Technology

[0002] During temperature and humidity alternating tests in the environmental test chamber, water vapor will condense inside the chamber and on some flow-through components when the dew point temperature is reached. A water collection structure is required to collect the condensate and discharge it into a designated drainage pipe to prevent the condensate from affecting the environmental test chamber and the customer's site.

[0003] To reduce energy consumption, some environmental test chambers now use non-mechanically powered drainage structures. Specifically, silicone hoses are used as drainage pipes. One end of the drainage pipe is inserted into the water collection tray, the chamber body, and the door, while the other end is connected to the drain outlet, using gravity to drain the condensate.

[0004] The defects of existing drainage structures include: they are greatly affected by the initial water flow and its continuity. If the initial water flow in the drainage pipe is not smooth, subsequent drainage will be difficult, especially for condensate in devices such as the water collection pan, which are located at low positions and cannot be discharged by gravity; drainage pipes are usually long and it is difficult to maintain continuous drainage, which makes it easy for air to mix into the drainage pipes. Water seals or air seals can easily form at the high points of the silicone hoses, resulting in high water flow resistance and affecting subsequent drainage; relying on natural evaporation to remove moisture takes a long time and is prone to causing corrosion of metal parts. Summary of the Invention

[0005] The purpose of this invention is to propose a drainage system for an environmental test chamber and an environmental test chamber, which solves the problem of high water flow resistance in existing drainage structures and provides good drainage performance.

[0006] To achieve this objective, the present invention employs the following technical solution: A drainage system for an environmental test chamber includes: a first water collection pipe with a first water collection and exhaust port; a second water collection pipe with its intake port positioned lower than the intake port of the first water collection pipe; and a drainage pipeline, wherein the first water collection pipe and the second water collection pipe are respectively connected to the drainage pipeline, or the first water collection pipe and the second water collection pipe merge and are connected to the drainage pipeline together, wherein when the first water collection pipe drains water into the drainage pipeline, it can generate a kinetic negative pressure, and the kinetic negative pressure is used to draw the drainage in the second water collection pipe.

[0007] In one preferred embodiment, the inlet end of the first water collection pipe is connected to at least two sub-water collection pipes, and any two of the sub-water collection pipes are connected by a sub-pipe venting passage, which is higher than the water level line.

[0008] In one preferred embodiment, the sub-pipe exhaust passage is inclined relative to the horizontal plane.

[0009] In one preferred embodiment, a second water collection check valve is provided on the second water collection pipe. The second water collection check valve is used to prevent water in the first water collection pipe from flowing back into the front end of the second water collection pipe.

[0010] In one preferred embodiment, a first water collection high point is formed on the first water collection pipe, and a first water collection vent is connected to the first water collection high point.

[0011] In one preferred embodiment, a drain pipe vent is connected to the drain pipe, and a drain pipe vent check valve is provided between the drain pipe vent and the drain pipe.

[0012] In one preferred embodiment, a high point is formed on the drainage pipe, and the vent of the drainage pipe is located between the high point of the drainage pipe and the first water collection pipe.

[0013] In one preferred embodiment, the end of the drainage pipe is connected to a drain outlet, and a flow control valve is provided on the drainage pipe between the drain outlet and the drain outlet. The flow control valve is used to control the water flow rate in the first water collection pipe and the drainage pipe.

[0014] In one preferred embodiment, the drainage system for the environmental test chamber further includes a humidification device connected to the first water collection pipe or the drainage pipe.

[0015] On the other hand, the present invention adopts the following technical solution: An environmental test chamber includes a door, a chamber body, and a water collection tray. The environmental test chamber also includes the aforementioned drainage system for the environmental test chamber, with a first water collection pipe connected to the door and / or the chamber body, and a second water collection pipe connected to the water collection tray.

[0016] The environmental test chamber drainage system disclosed in this invention can generate a kinetic negative pressure when the first water collection pipe drains into the drainage pipeline, which can draw the drainage in the second water collection pipe, thus solving the problem that the low position of the water collection tray leads to low gravitational potential energy of drainage and easy obstruction of drainage; a first water collection vent is provided on the first water collection pipe, and the air bubbles collected in the first water collection pipe can be discharged through the first water collection vent, reducing the proportion of gas, thereby reducing the air resistance of water flow, solving the problem of drainage difficulties caused by air resistance in the pipeline in the existing drainage structure.

[0017] The environmental test chamber disclosed in this invention utilizes the kinetic negative pressure generated during high-level water collection and drainage from the chamber door and / or body to drive the low-level accumulated water in the water collection tray into the second water collection pipe. This results in high drainage efficiency and smooth water flow. The drainage pipeline is sealed, preventing deterioration and odor generation. It eliminates the need for mechanical or power components such as motors, requiring no electricity or gas supply, thus avoiding damage to mechanical or power components. It is maintenance-free, low-cost, and noiseless. Furthermore, it requires no electricity or gas supply, has a simple and reliable structure, and stable function. Attached Figure Description

[0018] Figure 1 This is one of the structural schematic diagrams of the drainage system for an environmental test chamber provided in a specific embodiment of the present invention; Figure 2 This is the second structural schematic diagram of the drainage system for the environmental test chamber provided in a specific embodiment of the present invention.

[0019] In the picture: 1. First water collection pipe; 2. Second water collection pipe; 3. Drainage pipe; 4. Humidifier; 11. First water collection high point; 12. First water collection vent; 13. First water collection vent check valve; 14. Sub-water collection pipe; 15. Sub-pipe vent passage; 16. Water level line; 21. Second water collection check valve; 22. Second water collection high point; 31. Drainage pipe high point; 32. Drainage pipe vent; 33. Drainage pipe vent check valve; 34. Drain outlet; 35. Flow control valve; 100. Box door; 200. Box body; 300. Water collection tray. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Examples of embodiments of the present invention are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening 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 intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] This embodiment discloses a drainage system for an environmental test chamber and an environmental test chamber including the drainage system, eliminating the need for mechanical power such as water pumps for drainage. Figure 1 and Figure 2 As shown, the environmental test chamber includes a door 100, a chamber body 200, a water collection tray 300, and a drainage system. The drainage system is connected to the door 100, the chamber body 200, and the water collection tray 300. The door 100 and the chamber body 200 are usually positioned higher than the water collection tray 300. Water entering the drainage system from the door 100 and the chamber body 200 has greater gravitational potential energy, making it easier to drain. Water in the water collection tray 300 has lower gravitational potential energy, making it more susceptible to drainage problems due to pipework and gas flow.

[0028] The drainage system of this environmental test chamber includes a first water collection pipe 1, a second water collection pipe 2, and a drainage pipe 3. The first water collection pipe 1 connects to the chamber door 100 and / or the chamber body 200, and the second water collection pipe 2 connects to the water collection tray 300. The first water collection pipe 1 and the second water collection pipe 2 are each connected to the drainage pipe 3, or the first water collection pipe 1 and the second water collection pipe 2 merge and connect to the drainage pipe 3. The location of the chamber door 100 and / or the chamber body 200 is the water inlet location of the first water collection pipe 1, and the location of the water collection tray 300 is the water inlet location of the second water collection pipe 2.

[0029] When the environmental test chamber is working, water entering the chamber door 100, chamber body 200, and water collection tray 300 will drain into the first water collection pipe 1 and the second water collection pipe 2. Because the chamber door 100 and chamber body 200 are positioned higher, a kinetic negative pressure (or a negative pressure siphon effect) can be formed when the first water collection pipe 1 drains water into the drainage pipe 3. This kinetic negative pressure can be used to draw water from the second water collection pipe 2, solving the problem of low gravitational potential energy and easy obstruction of drainage caused by the low position of the water collection tray 300. It can be understood that as long as the position of the chamber door 100 and chamber body 200 is higher than the position of the water collection tray 300, a kinetic negative pressure can be formed when the first water collection pipe 1 drains water into the drainage pipe 3. The positions of the first water collection pipe 1 and the second water collection pipe 2 can be basically the same, without affecting the use of kinetic negative pressure for drainage.

[0030] When draining water at the door 100 and / or the body 200, air occasionally gets into the first water collection pipe 1. These air bubbles affect the normal flow of water in the first water collection pipe 1, and because gas is compressible, the stability and controllability of the water flow in the first water collection pipe 1 decreases as the proportion of gas increases. To improve stability, a first water collection vent 12 is provided on the first water collection pipe 1, through which air bubbles in the first water collection pipe 1 can be discharged. In some embodiments, a first water collection high point 11 is formed on the first water collection pipe 1, connected to the first water collection vent 12. Air bubbles in the first water collection pipe 1 gather at the first water collection high point 11 and are then discharged through the first water collection vent 12, reducing the proportion of gas and thus reducing air resistance in the water flow, solving the problem of drainage difficulties caused by air resistance in the existing drainage structure.

[0031] This drainage system utilizes the kinetic negative pressure generated during the high-level water collection and drainage of the box door 100 and / or box body 200 to drive the low-level accumulated water in the water collection tray 300 into the second water collection pipe 2. It has high drainage efficiency and smooth water flow; the drainage pipeline is closed, so there is no deterioration or odor; it does not require the use of motors or other mechanical or power components, and there is no need for power supply or gas supply. There is no problem of damage to mechanical or power components, it is maintenance-free, low-cost, and noiseless; it has no need for power supply or gas supply, and its structure is simple, reliable, and stable in function.

[0032] To prevent outside air from entering the first water collection pipe 1 through the first water collection vent 12, in some embodiments, a first water collection vent check valve 13 is provided between the first water collection vent 12 and the first water collection pipe 1. Gas in the first water collection pipe 1 can be discharged to the atmosphere or other locations through the first water collection vent check valve 13, but air from the atmosphere or other locations cannot enter the first water collection pipe 1 through the first water collection vent check valve 13, ensuring smoother drainage in the first water collection pipe 1.

[0033] Air can also mix into the drainage of the second water collection pipe 2 at the water collection pan 300. Since the second water collection pipe 2 relies on kinetic negative pressure to increase drainage power, installing a similar water collection and venting port on it would affect the drainage effect. Furthermore, air can be present at any bend in the pipe, and when water flows over the bend in the first water collection pipe 1, located behind the first water collection venting port 12, air bubbles may still be introduced into the drainage. To address this issue, in some embodiments, a drain pipe venting port 32 is connected to the drainage pipe 3. Air bubbles from the drainage of the second water collection pipe 2 and residual air bubbles from the first water collection pipe 1 are collected at the drain pipe venting port 32. A drain pipe venting check valve 33 is installed between the drain pipe venting port 32 and the drainage pipe 3 to ensure that air bubbles in the drainage pipe 3 can be discharged through the drain pipe venting port 32, while outside air cannot enter the drainage pipe 3 through the drain pipe venting port 32, resulting in a better user experience.

[0034] In order to ensure that the air bubbles in the drain pipe 3 can be discharged smoothly and fully through the drain pipe vent 32, a pressurizing device can be installed in the drain pipe 3 before the drain pipe vent 32. By increasing the water pressure, the air bubbles in the drain pipe 3 can be gathered at the drain pipe vent 32, and the venting can be smoother.

[0035] In some embodiments, a high point 31 is formed on the drain pipe 3, and a drain pipe vent 32 is located between the high point 31 and the first water collection pipe 1. That is, along the water flow direction, the high point 31 is located behind the drain pipe vent 32. The high point 31 can increase the water flow resistance and reduce the water flow at the drain pipe vent 32, allowing air bubbles in the drain pipe 3 to collect more thoroughly at the drain pipe vent 32, resulting in better venting effect.

[0036] One important factor affecting the number of air bubbles in the drainage pipe 3 is the water flow rate. When the water flow is fast, the time for gas to escape from the water inlet and the first water collection vent 12 is limited, resulting in more gas entering the drainage pipe 3. Additionally, a faster water flow can entrain air stored at pipe bends into the drainage. To address this, in some embodiments, the end of the drainage pipe 3 is connected to the drain outlet 34, and a flow control valve 35 is installed on the drainage pipe 3 between the drain outlet 32 ​​and the drain outlet 34. The flow control valve 35 controls the water flow rate in the first water collection pipe 1 and the drainage pipe 3, thereby controlling the amount of gas introduced and discharged, ensuring that as many air bubbles as possible in the first water collection pipe 1 are discharged at the first water collection vent 12, thus improving the stability of the drainage system.

[0037] The combined structure of the drain pipe vent 32, the drain pipe vent check valve 33, and the flow control valve 35 can effectively discharge the gas in the drain pipe 3, reduce the introduction of gas, allow more sufficient venting time at the first water collection vent 12, and improve the stability of the system.

[0038] Based on the above structure, a second water collection check valve 21 is installed on the second water collection pipe 2. The second water collection check valve 21 only allows water to flow in the direction of the drain pipe 3, preventing water in the first water collection pipe 1 from flowing back into the front end of the second water collection pipe 2, especially preventing drainage from flowing back into the water collection pan 300, thus avoiding overflow of the water collection pan 300. In some embodiments, a second water collection high point 22 is formed on the second water collection pipe 2, and the second water collection check valve 21 is located between the water collection pan 300 and the second water collection high point 22. The second water collection high point 22 can initially prevent water backflow and reduce the pressure at the second water collection check valve 21. The specific height of the second water collection high point 22 is not limited, that is, it should be able to prevent water backflow, but should not increase the water flow resistance too much, so as not to affect the normal drainage of the second water collection pipe 2.

[0039] When both the door 100 and the body 200 are connected to the first water collection pipe 1, in some embodiments, the inlet end of the first water collection pipe 1 is connected to at least two sub-water collection pipes 14. One sub-water collection pipe 14 is connected to the door 100, and the other sub-water collection pipe 14 is connected to the body 200. A sub-pipe vent passage 15 is connected between any two sub-water collection pipes 14, and the sub-pipe vent passage 15 is higher than the water level line 16. When the water in the first water collection pipe 1 accumulates to the water level line 16, the air entering the sub-water collection pipes 14 cannot be discharged through the first water collection vent 12 on the first water collection pipe 1. The design of the sub-pipe exhaust passage 15 allows air entering the sub-collection pipe 14 from the tank door 100 to enter the tank body 200 through the sub-pipe exhaust passage 15; similarly, air entering the sub-collection pipe 14 from the tank body 200 can enter the tank door 100 through the sub-pipe exhaust passage 15. The water flow after exhaust is smoother, which can provide initial kinetic energy for subsequent drainage, that is, the gravitational potential energy of water is converted into the kinetic energy of the water flow, solving the problem of water with low elevation difference not being able to be discharged.

[0040] In some embodiments, the sub-pipe exhaust passage 15 is inclined relative to the horizontal plane. When the drainage reaches the lower end of the sub-pipe exhaust passage 15, the air in the drainage can be discharged into another sub-collector pipe 14 along the sub-pipe exhaust passage 15, but the drainage is difficult to discharge into the other sub-collector pipe 14 through the sub-pipe exhaust passage 15, thus avoiding drainage splashing into the other sub-collector pipe 14. The specific inclination direction of the sub-pipe exhaust passage 15 is not limited. The upper end of the sub-pipe exhaust passage 15 is usually connected to the one with less drainage volume between the door 100 and the box body 200, and the lower end of the sub-pipe exhaust passage 15 is usually connected to the one with more drainage volume between the door 100 and the box body 200. The one with less drainage volume between the door 100 and the box body 200 may be in a state of no water or low water volume for a long time. When the gas arrives through the sub-pipe exhaust passage 15 and the sub-collector pipe 14, it will not cause the water stored in it to splash, resulting in a better user experience.

[0041] Based on the above structure, the drainage system for the environmental test chamber also includes a humidification device 4. Due to control issues, excess water may overflow during the water replenishment process of the humidification device 4, and this excess water needs to be drained. In one structure, such as... Figure 1 As shown, the humidifying device 4 is connected to the first water collection pipe 1; in another structure, such as Figure 2 As shown, the humidifier 4 is connected to the drain pipe 3. When the humidifier 4 drains water, it also creates a kinetic negative pressure (or a negative pressure siphon effect) at the second water collection pipe 2, improving the drainage effect of the second water collection pipe 2. When the humidifier 4 is connected to the first water collection pipe 1 and the drain pipe 3 is equipped with a drain pipe vent 32, the air bubbles brought into the first water collection pipe 1 and the drain pipe 3 by the humidifier 4 can also be discharged through the drain pipe vent 32, avoiding a decrease in the drainage speed of the first water collection pipe 1 and the drain pipe 3, resulting in a better user experience.

[0042] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A drainage system for an environmental test chamber, characterized in that, include: The first water collection pipe (1) is equipped with a first water collection vent (12). The second water collection pipe (2) has its water inlet located lower than the water inlet of the first water collection pipe (1); and, The drainage pipe (3) is connected to the first water collection pipe (1) and the second water collection pipe (2) respectively, or the first water collection pipe (1) and the second water collection pipe (2) are connected to the drainage pipe (3) together. When the first water collection pipe (1) drains water into the drainage pipe (3), it can form a kinetic negative pressure. The kinetic negative pressure is used to draw the drainage in the second water collection pipe (2).

2. The drainage system for the environmental test chamber according to claim 1, characterized in that, The inlet end of the first water collection pipe (1) is connected to at least two sub-water collection pipes (14), and any two of the sub-water collection pipes (14) are connected by a sub-pipe vent passage (15), which is higher than the water level line (16).

3. The drainage system for the environmental test chamber according to claim 2, characterized in that, The exhaust passage (15) of the sub-pipe is inclined relative to the horizontal plane.

4. The drainage system for the environmental test chamber according to claim 1, characterized in that, The second water collection pipe (2) is provided with a second water collection check valve (21), which is used to prevent water in the first water collection pipe (1) from flowing back into the front end of the second water collection pipe (2).

5. The drainage system for an environmental test chamber according to any one of claims 1 to 4, characterized in that, A first water collection high point (11) is formed on the first water collection pipe (1), and a first water collection vent (12) is connected to the first water collection high point (11).

6. The drainage system for an environmental test chamber according to any one of claims 1 to 4, characterized in that, A drain pipe vent (32) is connected to the drain pipe (3), and a drain pipe vent check valve (33) is provided between the drain pipe vent (32) and the drain pipe (3).

7. The drainage system for an environmental test chamber according to claim 6, characterized in that, The drainage pipe (3) has a drainage pipe high point (31), and the drainage pipe exhaust port (32) is located between the drainage pipe high point (31) and the first water collection pipe (1).

8. The drainage system for an environmental test chamber according to claim 6, characterized in that, The end of the drainage pipe (3) is connected to the drain outlet (34). A flow control valve (35) is provided on the drainage pipe (3) between the drain outlet (32) and the drain outlet (34). The flow control valve (35) is used to control the water flow speed in the first water collection pipe (1) and the drainage pipe (3).

9. The drainage system for an environmental test chamber according to any one of claims 1 to 4, characterized in that, The drainage system for the environmental test chamber also includes a humidification device (4), which is connected to the first water collection pipe (1) or the drainage pipe (3).

10. An environmental test chamber, comprising a door (100), a chamber body (200), and a water collection tray (300), characterized in that, The environmental test chamber further includes a drainage system for the environmental test chamber as described in any one of claims 1 to 9, wherein a first water collection pipe (1) is connected to the chamber door (100) and / or the chamber body (200), and a second water collection pipe (2) is connected to the water collection tray (300).

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