Automatic exhaust valve device

Abstract

The utility model relates to the technical field of liquid cooling, in particular to an automatic exhaust valve device. The projection of the upper shell is composed of a major arc and a flange, the bottom of the flange and a chord on the back face of the major arc are collinear, and the flange and the major arc are coaxial; the lower shell is detachably connected with the upper shell; the shape of the lower shell is matched with that of the upper shell; a similar convex cavity is formed between the upper shell and the lower shell; the shape of the buoy is matched with that of a cavity between the upper shell and the lower shell, and the buoy is in sliding connection with the cavity; the supporting seat is fixed on the inner wall of the lower shell below the air outlet channel; the bottom of the reset spring is fixed above the supporting seat; one end of the swing arm is hinged to the top of the buoy; the bottom of the other end is fixed to the upper end of the reset spring, and the top is in contact with the exhaust port and closes or opens the exhaust channel. The problem that an exhaust valve can be damaged during deflection due to excessive degrees of freedom of the buoy is solved.

Description

Technical Field

[0001] This utility model relates to the field of liquid cooling technology, and in particular to an automatic exhaust valve device. Background Technology

[0002] During the operation of current liquid-cooled piping systems, the temperature of the cooling medium rises continuously with increasing operating time, generating bubbles. These bubbles occupy some space within the piping. Furthermore, the cooling medium also generates bubbles upon heating, increasing the pressure within the piping and hindering its normal flow. Since the specific heat capacity of gases is much lower than that of liquids, the presence of a large number of bubbles significantly impacts cooling efficiency. To ensure the stable and efficient operation of the liquid-cooled piping system, it is necessary to promptly remove bubbles from the piping, thereby reducing internal system pressure and improving cooling efficiency.

[0003] Application No. 202323669683.3 discloses an automatic air vent valve, belonging to the field of HVAC equipment technology. The key technical features are: a valve body, valve cover, connector, float, swing arm, and seal. The valve body has an inner cavity and an inlet connecting to the inner cavity. The valve cover is connected to the valve body and covers the inner cavity. The connector is located on the valve cover and has an air vent channel connecting the inner cavity to the outside. The float is located in the inner cavity and floats according to the liquid level. The connecting end of the swing arm is hinged to the valve cover or connector, and the free end of the swing arm is connected to the float, which drives the swing arm. The seal is located on the swing arm and can seal and open the lower end of the air vent channel according to the swing state of the swing arm. This air vent valve is reasonably designed and can automatically open and close according to the gas and pressure in the inner cavity, eliminating the need for manual operation by the user. It is convenient to use and has good airtightness.

[0004] The float in the above technology is cylindrical. In actual use, in addition to the buoyancy from the bottom, it may also be subjected to impact force, which may cause the float to deflect. If deflection occurs, it will damage the exhaust valve. Utility Model Content

[0005] This invention provides an automatic exhaust valve device that can solve the problem that excessive float freedom can damage the exhaust valve when it deflects.

[0006] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0007] An automatic air venting valve device includes:

[0008] Upper housing: The projection of the upper housing consists of a superior arc shape and a flange, wherein the bottom of the flange is collinear with the chord on the back of the superior arc shape, and the flange and the superior arc shape are coaxial; the flange is provided with an air outlet channel; the flange and the chord are smoothly transitioned.

[0009] Lower housing: The lower housing and the upper housing are detachably connected; the shape of the lower housing matches that of the upper housing; a connection port is provided at the bottom of the lower housing for connecting to the liquid cooling pipeline; a convex cavity is formed between the upper housing and the lower housing;

[0010] Buoy: The shape of the buoy matches the shape of the cavity between the upper and lower shells and is slidably connected thereto;

[0011] Support base: Fixed to the inner wall of the lower housing below the air outlet channel;

[0012] Return spring: The bottom of the return spring is fixed above the support base;

[0013] Swing arm: One end of the swing arm is hinged to the top of the buoy; the bottom of the other end is fixed to the upper end of the return spring, and the top is in contact with the exhaust port, thereby closing or opening the air outlet channel.

[0014] The basic principle and beneficial effects of this scheme: This scheme uses an upper shell, a lower shell, and an internally slidingly connected float to form the main basic structure of the exhaust valve. An exhaust channel is opened on the upper shell, and a connection port is opened at the lower end of the lower shell to connect to the liquid cooling pipeline. The opening or closing of the exhaust channel is controlled by the setting of the swing arm.

[0015] When there is little gas in the pipeline, the liquid level is high, the float is in equilibrium, and a face seal is formed between the upper end of the swing arm and the upper housing, preventing gas and cooling medium from escaping into the atmosphere. When there is more gas in the pipeline, the gas rises into the upper cavity of the exhaust device, increasing the pressure inside the cavity, causing the liquid level to drop. The float then descends, deviating from its equilibrium position. During the descent, the float will cause the swing arm and sealing gasket to rotate. This will lead to partial failure of the face seal between the upper end of the swing arm and the upper housing, resulting in a leak, and the gas will be discharged into the atmosphere from the exhaust channel.

[0016] As the gas is expelled from the upper chamber of the exhaust device, the pressure inside the chamber decreases, the liquid level gradually rises, and the buoy rises to its equilibrium position. Simultaneously, the rising buoy causes the swing arm to rotate. This results in a renewed end-face seal between the upper end of the swing arm and the upper housing, closing the leakage path and preventing gas and cooling medium from escaping into the atmosphere outside the pipeline.

[0017] In this design, the upper and lower shells, as well as the buoy, are all shaped like a superimposed arc with a flange. This design better ensures contact between the buoy and the inner wall of the cavity, increasing the contact area between the buoy and the interior. Furthermore, compared to the traditional circular structure (referring to the matching shape between the buoy and the inner wall), the convex structure provides more constraints, preventing the buoy from deflecting or misaligning during sliding and reducing the risk of damage from collisions.

[0018] The irregular shape of the shell and buoy in this design reduces the volume of the exhaust valve compared to a circular structure. In actual use, this part can be used for matching and installation, which also reduces the overall weight of the exhaust valve.

[0019] Furthermore, a positioning platform is fixed on the side of the buoy away from the support base. The positioning platform consists of two limiting blocks, which are spaced apart. A limiting groove is opened on the side of the limiting block near the inner wall of the cavity. The end of the swing arm that contacts the buoy is fitted with the limiting groove and installed in the limiting groove.

[0020] Beneficial effects: During the buoy's sliding process, the swing arm is installed in the limiting groove and swings as the limiting groove slides, controlling the opening and closing of the air outlet channel. The limiting groove can prevent the swing arm from falling off during the sliding process.

[0021] Furthermore, an inner sealing gasket is fixed to the end of the swing arm near the air outlet channel.

[0022] Beneficial effect: The inner sealing gasket fits the air outlet channel, resulting in better sealing performance.

[0023] Furthermore, the buoy is provided with at least a first stepped platform and a second stepped platform on the side near the support base. When the swing arm closes the exhaust port, the height of the bottom of the support base is between the first stepped platform and the second stepped platform.

[0024] Beneficial effects: Setting multiple steps allows the position of the positioning platform to be unrestricted by the height of the support base. If there is only one plane, the entire buoy must be below the support base. This solution allows some buoys to be above the bottom height of the support base, which can effectively utilize the internal space of the upper shell and reduce the overall height of the exhaust valve.

[0025] Furthermore, an exhaust cap is detachably connected to the outside of the air outlet channel; an exhaust hole is opened on the side wall of the exhaust cap.

[0026] Beneficial effects: It can effectively prevent foreign objects from entering the air outlet channel. At the same time, the exhaust port is located on the side, which not only facilitates exhaust but also reduces the probability of foreign objects entering.

[0027] Furthermore, an exhaust sealing gasket is fixedly provided on the top of the exhaust cap.

[0028] Furthermore, the bottom of the air outlet channel is narrowed at the point where it contacts the swing arm.

[0029] Beneficial effects: The smaller contact area between the constricted opening at the swing arm and the inner sealing gasket means a smaller sealing area for the inner sealing gasket and better sealing performance.

[0030] Furthermore, a lower shell sealing ring is also fitted at the connection port.

[0031] Beneficial effects: Facilitates the connection and sealing of the connection port and liquid cooling pipeline. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of an automatic exhaust valve device;

[0033] Figure 2 A cross-sectional view of the structure of an automatic exhaust valve device (exhaust passage closed);

[0034] Figure 3 A cross-sectional view of the structure of an automatic exhaust valve device (exhaust passage open), and a cross-sectional view of its AA;

[0035] Figure 4 A structural diagram of the buoy from multiple perspectives;

[0036] Figure 5 This is an exploded view of an automatic exhaust valve device. Detailed Implementation

[0037] The following detailed description illustrates the specific implementation method:

[0038] The markings in the accompanying drawings include: upper housing 1, air outlet channel 11, lower housing 2, connection port 21, float 3, positioning platform 31, limiting groove 32, first stepped platform 33, second stepped platform 34, first arc surface 35, first convex surface 36, second arc surface 37, exhaust cap 4, exhaust sealing gasket 41, exhaust hole 42, return spring 5, inner sealing gasket 6, support base 7, swing arm 8, lower housing sealing ring 9.

[0039] Example 1 is attached. Figure 1 , 5 As shown,

[0040] An automatic air venting valve device includes:

[0041] Upper housing 1: The projection of the upper housing 1 consists of a superior arc shape and a flange, wherein the bottom of the flange is collinear with the chord on the back of the superior arc shape, and the flange and the superior arc shape are coaxial; the flange is provided with an air outlet channel 11; the flange and the chord are smoothly transitioned.

[0042] Lower housing 2: The lower housing 2 and the upper housing 1 are detachably connected; the shape of the lower housing 2 matches that of the upper housing 1; a connection port 21 is provided at the bottom of the lower housing 2 for connecting to the liquid cooling pipeline; a convex cavity is formed between the upper housing 1 and the lower housing 2;

[0043] Buoy 3: The shape of buoy 3 matches the shape of the cavity between the upper shell 1 and the lower shell 2, and is slidably connected thereto; as shown in the attached figure. Figure 4As shown, a positioning platform 31 is fixedly provided on the top side of the buoy 3 away from the support base 7. The positioning platform 31 consists of two limiting blocks, which are spaced apart. A limiting groove 32 is formed on the side of the limiting block near the inner wall of the cavity. The end of the swing arm 8 that contacts the buoy 3 is fitted into the limiting groove 32 and installed in the limiting groove 32. The side of the buoy 3 near the support base 7 is provided with a first stepped platform 33 and a second stepped platform 34, as shown in the attached figure. Figure 3 As shown, when the swing arm 8 closes the exhaust port, the height of the bottom of the support base 7 is between the first stepped platform 33 and the second stepped platform 34. The flange portion of the buoy 3 includes a first protrusion 36, with a first arc surface 35 and a second arc surface 37 on its two sides, respectively. That is, the first protrusion 36 and the second stepped platform 34 are smoothly connected by two arc surfaces. The connection with the inner wall surface is smoother.

[0044] In this design, the upper shell 1, lower shell 2, and buoy 3 are all shaped like a superimposed arc-shaped flange. This design better ensures the contact between buoy 3 and the inner wall of the cavity, thus increasing the contact area between buoy 3 and the inner wall. Furthermore, compared to the traditional circular structure (referring to the matching shape between buoy 3 and the inner wall), the convex structure provides more constraints, preventing buoy 3 from deflecting or misaligning during sliding and reducing the risk of damage from collisions.

[0045] Support 7: Fixed to the inner wall of the lower housing 2 below the air outlet channel 11;

[0046] Return spring 5: The bottom of the return spring 5 is fixed above the support base 7;

[0047] Swing arm 8: One end of the swing arm 8 is hinged to the top of the buoy 3; the bottom of the other end is fixed to the upper end of the return spring 5, and the top is in contact with the exhaust port, thus closing or opening the air outlet channel 11. One side of the swing arm 8 is T-shaped, and it is inserted into the limiting groove 32 during use, allowing it to slide and rotate relative to the limiting groove 32.

[0048] The other end is provided with a groove for installing the inner sealing gasket 6, and the bottom of the air outlet channel 11 is narrowed at the position where it contacts the swing arm 8.

[0049] As attached Figure 2 As shown, an exhaust cap 4 is detachably connected to the outside of the exhaust channel 11; an exhaust hole 42 is opened on the side wall of the exhaust cap 4. An exhaust sealing gasket 41 is fixedly provided on the top of the exhaust cap 4.

[0050] A lower shell sealing ring 9 is also fitted at the connection port 21 to facilitate the connection and sealing between the connection port 21 and the liquid cooling pipeline.

[0051] The automatic venting device functions primarily through a combination of several components, excluding the outer sealing ring of the lower housing 2 and the sealing gasket of the vent cap 4. When there is little gas in the pipeline, the liquid level is high, the float 3 is in equilibrium, and an end-face seal is formed between the sealing gasket and the upper housing 1, preventing gas and cooling medium from venting into the atmosphere outside the pipeline. When there is more gas in the pipeline, the gas rises into the upper cavity of the venting device, increasing the pressure inside the cavity and causing the liquid level to drop. The float 3 then descends, deviating from its equilibrium position. During its descent, the float 3 drives the swing arm 8 and the sealing gasket to rotate. This causes partial failure of the surface seal between the sealing gasket and the upper housing 1, creating a leakage channel, allowing gas to escape into the atmosphere outside the pipeline. As gas is expelled from the upper cavity of the venting device, the pressure inside the cavity decreases, and the liquid level gradually rises, causing the float 3 to rise to its equilibrium position. Simultaneously, the rising of the float 3 drives the swing arm 8 and the sealing gasket to rotate. This causes the sealing gasket to re-form an end-face seal between the sealing gasket and the upper housing 1, closing the leakage channel and preventing gas and cooling medium from venting into the atmosphere outside the pipeline.

[0052] The above are merely embodiments of this utility model. This utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are able to access all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims. The specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An automatic exhaust valve device, characterized in that, include: Upper housing: The projection of the upper housing consists of a superior arc shape and a flange, wherein the bottom of the flange is collinear with the chord on the back of the superior arc shape, and the flange and the superior arc shape are coaxial; the flange is provided with an air outlet channel; the flange and the chord are smoothly transitioned. Lower housing: The lower housing and the upper housing are detachably connected; the shape of the lower housing matches that of the upper housing; a connection port is provided at the bottom of the lower housing for connecting to the liquid cooling pipeline; a convex cavity is formed between the upper housing and the lower housing; Buoy: The shape of the buoy matches the shape of the cavity between the upper and lower shells and is slidably connected thereto; Support base: Fixed to the inner wall of the lower housing below the air outlet channel; Return spring: The bottom of the return spring is fixed above the support base; Swing arm: One end of the swing arm is hinged to the top of the buoy; the bottom of the other end is fixed to the upper end of the return spring, and the top is in contact with the exhaust port, thereby closing or opening the air outlet channel.

2. The automatic exhaust valve device according to claim 1, characterized in that: A positioning platform is fixed on the top of the buoy away from the support base. The positioning platform consists of two limiting blocks, which are spaced apart. A limiting groove is opened on the side of the limiting block near the inner wall of the cavity. The end of the swing arm that contacts the buoy is fitted with the limiting groove and installed in the limiting groove.

3. The automatic exhaust valve device according to claim 1, characterized in that: An inner sealing gasket is also fixed to the end of the swing arm near the air outlet channel.

4. An automatic exhaust valve device according to claim 2, characterized in that: The buoy is provided with at least a first stepped platform and a second stepped platform on the side near the support base. When the swing arm closes the exhaust port, the height of the bottom of the support base is between the first stepped platform and the second stepped platform.

5. An automatic exhaust valve device according to any one of claims 1-4, characterized in that: An exhaust cap is detachably connected to the outside of the air outlet channel; an exhaust hole is opened on the side wall of the exhaust cap.

6. An automatic exhaust valve device according to claim 5, characterized in that: An exhaust sealing gasket is fixed to the top of the exhaust cap.

7. An automatic exhaust valve device according to claim 1, characterized in that: The bottom of the air outlet channel is narrowed at the point where it contacts the swing arm.

8. An automatic exhaust valve device according to claim 1, characterized in that: A lower shell sealing ring is also fitted at the connection port.

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