Automatic exhaust valve device

Abstract

The invention 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] The present invention relates to the technical field of liquid cooling, and particularly relates to an automatic exhaust valve device. Background Art

[0002] During the operation of the current liquid cooling pipeline system, as the working time of the cooling medium increases, its temperature will continuously rise, and at the same time, bubbles will be generated. These bubbles will occupy a part of the space inside the pipeline. Moreover, the cooling medium will also generate bubbles when heated, causing the pressure inside the pipeline to increase and hindering the normal flow of the cooling medium. Since the specific heat capacity of gas is much smaller than that of liquid, the presence of a large number of bubbles will significantly affect the cooling effect. To ensure the stable and efficient operation of the liquid cooling pipeline system, it is necessary to timely discharge the bubbles inside the pipeline, thereby reducing the internal pressure of the system and improving the cooling efficiency.

[0003] Application No. 202323669683.3 discloses an automatic exhaust valve, belonging to the technical field of heating and ventilation equipment. The key points of its technical solution are: including a valve body, a valve cover, a joint, a float, a swing arm, and a seal. The valve body has an inner cavity and a water inlet communicating with the inner cavity. The valve cover is connected to the valve body and covers the inner cavity. The joint is arranged on the valve cover, and the joint has an exhaust passage that can communicate the inner cavity with the outside. The float is arranged in the inner cavity, and the float can float along with the liquid level height in the inner cavity. The connecting end of the swing arm is hinged to the valve cover or the joint, the free end of the swing arm is connected to the float, and the swing arm is driven by the float. The seal is arranged on the swing arm, and the seal can seal and open the lower end of the exhaust passage according to the swinging state of the swing arm. This exhaust valve is reasonably designed and can be automatically opened and closed according to the gas and pressure in the inner cavity. It does not require the user to manually open and close it with tools, is convenient to use, and has better air tightness.

[0004] The float in the above technology is cylindrical. During actual use, in addition to the buoyancy from the bottom, it may also be subjected to an impact force, causing the float to have a tendency to deflect. If deflection occurs, it will damage the exhaust valve. Summary of the Invention

[0005] The present invention provides an automatic exhaust valve device, which can solve the problem that the float has too many degrees of freedom and will damage the exhaust valve when deflecting.

[0006] To solve the above technical problems, the present application provides the following technical solutions:

[0007] An automatic exhaust valve device, comprising:

[0008] An upper housing: The projection of the upper housing is composed of a major arc bow and a flange, wherein the bottom of the flange is collinear with the chord on the back of the major arc bow, and the flange and the major arc bow are coaxial; an air outlet channel is provided on the flange; the flange and the chord are smoothly transitioned;

[0009] Lower housing: The lower housing is detachably connected to the upper housing; 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 a liquid cooling pipeline; a convex-shaped cavity is formed between the upper housing and the lower housing;

[0010] Float: The shape of the float matches the shape of the cavity between the upper housing and the lower housing and is slidably connected thereto;

[0011] Support seat: Fixed on 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 seat;

[0013] Swing arm: One end of the swing arm is hinged to the top of the float; the bottom of the other end is fixed to the upper end of the return spring, and the top contacts the exhaust port and closes or opens the air outlet channel.

[0014] Basic principle and beneficial effects of this solution: This solution uses the upper housing, the lower housing, and the internally slidable float to form the main basic structure of the exhaust valve. An air outlet channel is provided on the upper housing, and a connection port is provided at the lower end of the lower housing for connecting to a liquid cooling pipeline. The opening or closing of the air outlet channel is controlled by the setting of the swing arm;

[0015] When there is less gas in the pipeline, the liquid level is higher at this time, and the float is in a balanced state. An end face seal is formed between the upper end of the swing arm and the upper housing, and the gas and the cooling medium cannot be discharged from the pipeline to the atmosphere outside; when there is more gas in the pipeline, the gas climbs to the upper cavity of the exhaust device at this time, the pressure in the cavity increases, the liquid level drops, and the float drops and deviates from the balanced position. During the dropping process of the float, the swing arm and the gasket will be driven to rotate. This will cause the end face seal between the upper end of the swing arm and the upper housing to be partially ineffective, forming a leak, and the gas is discharged from the air outlet channel to the atmosphere outside the pipeline.

[0016] As the gas in the upper cavity of the exhaust device is discharged, the air pressure in the cavity decreases, and the liquid level will gradually rise, and the float will also rise to its balanced position. At the same time, the float will drive the swing arm to rotate during the rising process. This will cause an end face seal to be formed again between the upper end of the swing arm and the upper housing, closing the leak channel, and the gas and the cooling medium cannot be discharged from the pipeline to the atmosphere outside.

[0017] The shapes of the upper housing, the lower housing, and the float in this solution are all composed of a shape similar to a major arc segment superimposed on a flange. This setting can better ensure the contact between the float and the inner wall of the cavity, that is, it increases the contact area between the float and the interior. At the same time, compared with the traditional circular structure (referring to the matching shape between the float and the inner wall), this solution can have more constraints, which can prevent the float from deflecting or sliding out of position during the sliding process, and reduce the damage caused by the collision of the float.

[0018] The special-shaped structures of the housing and the buoy in this solution reduce the volume of the exhaust valve compared with the circular structure. In actual use, this part of the position can be used for mating installation, and also reduces the overall mass of the exhaust valve.

[0019] Further, a positioning platform is fixedly provided on one side of the top of the buoy away from the support base. The positioning platform is composed of two limiting blocks, and the two limiting blocks are arranged at intervals. A limiting groove is opened on one side of the limiting block close to the inner wall of the cavity; one end of the swing arm in contact with the buoy is matched with the limiting groove and installed in the limiting groove.

[0020] Beneficial effect: During the sliding process of the buoy, 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] Further, an inner sealing gasket is also fixed at one end of the swing arm close to the air outlet channel.

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

[0023] Further, at least a first stepped platform and a second stepped platform are provided on one side of the buoy close to 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 effect: Setting multiple steps can make the position of the positioning platform not limited by the height of the support base. If there is only one plane, the entire buoy has to be below the support base. In this solution, part of the buoy can be above the bottom height of the support base, that is, the internal space of the upper housing can be effectively utilized, and the height of the overall exhaust valve can be reduced.

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

[0026] Beneficial effect: It can effectively prevent foreign objects from entering the air outlet channel. At the same time, the exhaust holes are arranged on the side. In addition to facilitating exhaust, it can also reduce the probability of foreign objects entering.

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

[0028] Further, the position where the bottom of the air outlet channel contacts the swing arm is a reduced opening.

[0029] Beneficial effect: The reduced opening has a smaller fitting area with the inner sealing gasket at the swing arm, that is, the sealing area of the inner sealing gasket is smaller, and the sealing performance is better.

[0030] Further, a lower housing sealing ring is also sleeved at the connection port.

[0031] Beneficial effects: Facilitate the connection and sealing between the connection port and the liquid cooling pipeline. Description of the drawings

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

[0033] Figure 2 It is a cross-sectional view of the structure of an automatic exhaust valve device (the air outlet channel is closed);

[0034] Figure 3 It is a cross-sectional view of the structure of an automatic exhaust valve device (the air outlet channel is open), and its cross-sectional view along A-A;

[0035] Figure 4 It is a schematic structural diagram of the float from multiple perspectives;

[0036] Figure 5 It is an exploded view of an automatic exhaust valve device. Specific implementation manners

[0037] The following is a further detailed description through specific implementation manners:

[0038] The markings in the attached drawings of the specification 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 seat 7, swing arm 8, lower housing sealing ring 9.

[0039] Example 1 is as shown in the attached Figure 1 、 5 figure,

[0040] An automatic exhaust valve device includes:

[0041] Upper housing 1: The projection of the upper housing 1 is composed of a major arc bow and a flange, wherein the bottom of the flange is collinear with the chord on the back of the major arc bow, and the flange and the major arc bow are coaxial; an air outlet channel 11 is provided on the flange; 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 opened at the bottom of the lower housing 2 for connecting to the liquid cooling pipeline; a convex-shaped cavity is formed between the upper housing 1 and the lower housing 2;

[0043] Float 3: The shape of the float 3 matches the shape of the cavity between the upper housing 1 and the lower housing 2, and is slidably connected thereto; as shown in the attached Figure 4As shown, on one side of the top of the buoy 3 away from the support base 7, a positioning platform 31 is fixedly provided. The positioning platform 31 is composed of two limiting blocks, and the two limiting blocks are arranged at intervals. A limiting groove 32 is opened on the side of the limiting block close to the inner wall of the cavity; one end of the swing arm 8 in contact with the buoy 3 is matched with the limiting groove 32 and is installed in the limiting groove 32. On one side of the buoy 3 close to the support base 7, a first stepped platform 33 and a second stepped platform 34 are provided. As shown in the appendix Figure 3 As shown, when the swing arm 8 closes the exhaust port, the height of the bottom of the support base 7 is located between the first stepped platform 33 and the second stepped platform 34. The flange part of the buoy 3 includes a first convex block 36, and on both sides thereof are a first arc surface 35 and a second arc surface 37 respectively, that is, a smooth transition is made between the first convex block 36 and the second stepped platform 34 through two arc surfaces and they are connected together. The connection with the inner wall surface is smoother.

[0044] In this solution, the shapes of the upper shell 1, the lower shell 2 and the buoy 3 are all composed of a shape similar to a major arc bow stacked with a flange. This setting can better ensure the contact between the buoy 3 and the inner wall of the cavity, that is, it increases the contact area between the buoy 3 and the inner wall. At the same time, compared with the traditional circular structure (referring to the matching shape of the buoy 3 and the inner wall), this solution can have more constraints, which can prevent the buoy 3 from deflecting or sliding out of position during the sliding process, and reduce the damage caused by the collision of the buoy 3.

[0045] Support base 7: Fixed on the inner wall of the lower shell 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 and closes or opens the air outlet channel 11. One side of the swing arm 8 is T-shaped and is buckled into the limiting groove 32 during use so that it can 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 position where the bottom of the air outlet channel 11 contacts the swing arm 8 is a reduced opening.

[0049] As shown in the appendix Figure 2 As shown, an exhaust cap 4 is detachably connected to the outside of the air outlet channel 11; exhaust holes 42 are 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 sleeved at the connection port 21. It is convenient for the connection and sealing of the connection port 21 and the liquid cooling pipeline.

[0051] The function of the automatic exhaust device is mainly achieved by the combination of several parts except the outer seal ring of the lower housing 2 and the gasket of the exhaust cap 4. When there is less gas in the pipeline and the liquid level is relatively high at this time, the buoy 3 is in a balanced state, and an end face seal is formed between the gasket and the upper housing 1, so that the gas and the cooling medium cannot be discharged into the atmosphere outside the pipeline. When there is more gas in the pipeline, the gas climbs to the upper cavity of the exhaust device at this time, the pressure in the cavity increases, the liquid level drops, and the buoy 3 drops and deviates from the balanced position accordingly. During the dropping process of the buoy 3, the swing arm 8 and the gasket will be driven to rotate. This will cause partial failure of the face seal between the gasket and the upper housing 1, forming a leakage channel, and the gas is discharged into the atmosphere outside the pipeline through the air outlet channel. As the gas in the upper cavity of the exhaust device is discharged, the air pressure in the cavity decreases, and the liquid level will gradually rise, and the buoy 3 will also rise to its balanced position. At the same time, during the rising process of the buoy 3, the swing arm 8 and the gasket will be driven to rotate. This will cause an end face seal to be formed again between the gasket and the upper housing 1, closing the leakage channel, and the gas and the cooling medium cannot be discharged into the atmosphere outside the pipeline.

[0052] The above are only embodiments of the present invention. The present invention is not limited to the fields involved in this embodiment. Common knowledge such as the specific structures and characteristics known to the public in the solution is not described in detail here. Those of ordinary skill in the art know all the common technical knowledge in the technical field to which the invention belongs before the application date or the priority date, can know all the prior arts in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, combine their own abilities to improve and implement this solution. Some typical well-known structures or well-known methods should not become obstacles for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. An automatic exhaust valve device, characterized in that: include: Upper shell: The projection of the upper shell consists of a major arc and a flange, wherein the bottom of the flange is in line with the chord on the back of the major arc, and the flange and the major arc are coaxial; an air outlet channel is provided on the flange; the flange and the chord are smoothly transitioned; Lower shell: the lower shell and the upper shell are detachably connected; the shape of the lower shell matches the upper shell; a connection port is provided at the bottom of the lower shell for connecting the liquid cooling pipeline; a convex cavity is formed between the upper shell and the lower shell; Float: The shape of the buoy matches the shape of the cavity between the upper shell and the lower shell, and is slidably connected thereto; Support seat: fixed on the inner wall of the lower shell below the air outlet channel; Return spring: The bottom of the return spring is fixed above the support seat; 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 reset spring, the top is in contact with the exhaust port, and the exhaust channel is closed or opened.

2. An automatic exhaust valve device according to claim 1, characterized in that: A positioning platform is fixedly provided on the side of the top of the buoy away from the support seat, and the positioning platform is composed of two limit blocks, which are arranged at an interval, and a limit groove is provided on the side of the limit block close to the inner wall of the cavity; the end of the swing arm that contacts the buoy cooperates with the limit groove and is installed in the limit groove.

3. An automatic exhaust valve device according to claim 1, characterized in that: An inner sealing pad is also fixed to one end of the swing arm close to 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 step platform and a second step platform on one side close to the support seat. When the swing arm closes the exhaust port, the height of the bottom of the support seat is between the first step platform and the second step platform.

5. An automatic exhaust valve device according to any one of claims 1 to 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 fixedly arranged on the top of the exhaust cap.

7. The automatic exhaust valve device according to claim 1, characterized in that: The position where the bottom of the air outlet channel contacts the swing arm is a constriction.

8. The automatic exhaust valve device according to claim 1, characterized in that: The connection port is also sleeved with a lower shell sealing ring.

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