A gas water heater exhaust valve

Abstract

The utility model relates to the field of smoke exhaust valve discloses a gas water heater smoke exhaust valve. It includes valve body, elastic part and elastic force adjusting assembly, and the valve body is suitable for directly installing in the top of gas water heater, and the one -way valve cover is rotatably arranged in the valve body interior, one -way valve cover is fixedly connected with elastic part one side, and the other side is connected with the inner wall of valve body, in order to be suitable for driving one -way valve cover to open, elastic force adjusting assembly is rotatably connected with valve body, and the position connection of elastic force adjusting assembly and elastic part and one -way valve cover contact, in order to be suitable for driving elastic part to occur elastic deformation, and the restraint is carried out to elastic part, causes one -way valve cover to close, one side of elastic force adjusting assembly exposes in the outside of valve body, when driving elastic force adjusting assembly to rotate, elastic part is suitable for driving one -way valve cover to open under the action of self elastic force. The utility model occupies less space and is low in cost, and the parts are less, and the production is simple, and the assembly fault tolerance is high.

Description

Technical Field

[0001] This utility model relates to the field of exhaust valve technology, and more specifically, to an exhaust valve for a gas water heater. Background Technology

[0002] Gas water heaters primarily utilize natural gas to heat water in an internal tank. An internal fan provides oxygen for combustion and also facilitates the removal of flue gas through a connected flue pipe. Utility model patent CN 223375835 U discloses a flue structure for a gas water heater. This structure includes a straight pipe with a push rod and a pushing assembly. When the check valve plate becomes stuck due to prolonged disuse, the pushing assembly can be operated to drive the push rod and separate the check valve plate from the valve seat without disassembling the straight pipe and the check valve. After this initial separation, the valve plate and seat can subsequently separate automatically under the action of the fan. However, the above technologies have high requirements for the fitting accuracy, installation accuracy, and production of the push rod, sliding sleeve, and rotating shaft. Otherwise, it is easy to cause jamming when driving the push rod to move, which will affect the user experience. In addition, a long straight pipe is required to accommodate the push rod and other components, which takes up a lot of space and is costly. Utility Model Content

[0003] To address at least one of the aforementioned problems, this utility model provides a gas water heater exhaust valve, comprising a valve body, an elastic element, and a spring force adjustment assembly. The valve body is adapted to be directly installed on the top of the gas water heater, and a one-way valve cover is rotatably provided inside the valve body. One side of the elastic element is fixedly connected to the one-way valve cover, and the other side is fixedly connected to the inner wall of the valve body, adapted to drive the one-way valve cover to open. The spring force adjustment assembly is rotatably connected to the valve body, and the spring force adjustment assembly is connected at the contact position between the elastic element and the one-way valve cover, adapted to drive the elastic element to undergo elastic deformation and constrain the elastic element, causing the one-way valve cover to close. One side of the spring force adjustment assembly is exposed outside the valve body. When the spring force adjustment assembly is driven to rotate, the elastic element is adapted to drive the one-way valve cover to open under its own elastic force.

[0004] Optionally, the valve body is provided with a torsion spring, which is adapted to drive the one-way valve cover to remain closed; when the constraint force of the elastic adjustment component on the elastic element is removed, the force of the elastic element driving the one-way valve cover to open is greater than the force of the torsion spring driving the one-way valve cover to close.

[0005] Optionally, the elastic adjustment assembly includes a hand-tightening column and a steel wire rope. The hand-tightening column is rotatably connected to the valve body, and one side of the hand-tightening column is exposed outside the valve body. The steel wire rope is wound around the hand-tightening column, with one end of the steel wire rope fixedly connected to the outer wall of the hand-tightening column and the other end fixedly connected to the elastic element.

[0006] Optionally, the valve body includes a first tube, a second tube, and a cover ring. The first tube has a flared section with an inner diameter larger than the outer diameter of the second tube. The cover ring is fitted onto the second tube and fixedly connected to it. One end of the flared section near the second tube is fixedly connected to the cover ring. One end of the second tube is inserted into the first tube. The one-way valve cover is adapted to cover the end of the second tube located inside the first tube. The elastic element is fixedly installed inside the second tube. The hand-tightening column is rotatably installed on the first tube.

[0007] Optionally, a rotating hole is provided on the outer wall of the first tube, and the hand-tightening column is rotatably inserted into the rotating hole.

[0008] Optionally, a first fluororubber ring is inserted into the rotating hole, and the hand-tightening post is inserted and passes through the first fluororubber ring, with the hand-tightening post tightly fitted to the first fluororubber ring.

[0009] Optionally, the outer wall of the second tube is provided with a through hole, the through hole being located inside the flared section, through which the wire rope passes.

[0010] Optionally, the elastic element is a V-shaped spring sheet, and a stamping ring is stamped on the side of the elastic element that is connected to the inner wall of the second tube. The stamping ring is inserted into the through hole, and the wire rope passes through the stamping ring.

[0011] Optionally, a second fluororubber ring is inserted and tightly fitted inside the stamping ring, and the steel wire rope passes through the second fluororubber ring and is in close contact with the second fluororubber ring.

[0012] Optionally, the cover plate is bent into a groove for insertion, and one end of the first tube is inserted into the groove for insertion.

[0013] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0014] 1. The valve body is directly connected to the gas water heater. The elastic element and the elastic adjustment component are both located on the valve body. There is no need to set up additional pipes to accommodate the elastic element and the elastic adjustment component. It occupies less space and has a low cost. In addition, one side of the elastic adjustment component is exposed outside the valve body for easy operation and rotation by the user. After the elastic adjustment component is rotated, it will gradually release the elastic element. The elastic element will push the valve cover open under its own elastic force. There are fewer parts, the production is simple and the production cost is low. During assembly, it is only necessary to ensure that the elastic element can push the one-way valve cover open. The error tolerance is high and high assembly precision is not required.

[0015] 2. The valve body is divided into a first tube body, a second tube body, and a cover ring. This separate manufacturing process reduces manufacturing difficulty and improves the ease of assembly of elastic components and elastic force adjustment components.

[0016] 3. The first and second fluororubber rings not only seal the mating joints to prevent the flue gas from leaking out of the valve body, but also dampen the rotation of the hand-tightening pin, preventing it from rotating under the elastic force of the elastic element. Fluororubber material itself has the characteristics of high temperature resistance, corrosion resistance and wear resistance, thus making the entire flue gas valve have a long service life. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the smoke exhaust valve in an embodiment of this utility model;

[0018] Figure 2 This is an exploded view of the smoke exhaust valve in an embodiment of this utility model;

[0019] Figure 3 This is a structural diagram of the elasticity adjustment component in an embodiment of the present invention;

[0020] Figure 4 for Figure 1 Enlarged view of part A in the middle.

[0021] Explanation of reference numerals in the attached drawings: 1. Valve body; 11. One-way valve cover; 12. First pipe body; 13. Second pipe body; 14. Cover ring; 15. Rotating frame; 16. First fluororubber ring; 17. Second fluororubber ring; 2. Elastic element; 21. Stamping ring; 3. Elasticity adjustment assembly; 31. Hand-tightening column; 32. Steel wire rope. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figure 1-4 This application will be described in further detail.

[0023] This utility model embodiment provides a gas water heater exhaust valve, see reference. Figure 1The exhaust valve of a gas water heater includes a valve body 1, an elastic element 2, and a spring adjustment assembly 3. A flue gas outlet pipe is located at the top of the gas water heater. The valve body 1 can be directly connected to the flue gas outlet pipe and sealed by a sealing structure. A stainless steel flue pipe is connected to the top of the valve body 1 to exhaust the flue gas outdoors. A one-way valve cover 11 is rotatably mounted inside the valve body 1. One side of the elastic element 2 is fixedly connected to the one-way valve cover 11, and the other side is fixedly connected to the inner wall of the valve body 1, suitable for driving the one-way valve cover 11 to open. The spring adjustment assembly 3 is rotatably connected to the valve body 1. The spring adjustment assembly 3 is connected at the contact point between the elastic element 2 and the one-way valve cover 11, suitable for driving the elastic element 2 to undergo elastic deformation and constraining the elastic element 2, causing the one-way valve cover 11 to close. One side of the spring adjustment assembly 3 is exposed outside the valve body 1; when the spring adjustment assembly is rotated, the elastic element 2 is adapted to drive the one-way valve cover 11 to open under its own elastic force. During assembly, it is only necessary to ensure that the elastic element 2 can push open the one-way valve cover 11, which has a high fault tolerance rate.

[0024] Reference Figure 1 and Figure 2 The valve body 1 comprises a first tube 12, a second tube 13, and a cover ring 14, all made of stainless steel. Manufacturing these components separately reduces manufacturing difficulty and improves the ease of assembly of the elastic element 2 and the elastic adjustment assembly 3. Both the second tube 13 and the cover ring 14 are located at the bottom of the first tube 12. The cover ring 14 is fitted onto the second tube 13 and welded to it for fixation. The top of the second tube 13 is inserted into the first tube 12, and the cover ring 14 is welded to it for fixation. A one-way valve cover 11 covers the opening at one end of the second tube 13 inside the first tube 12. The second tube 13 is connected to the flue gas outlet pipe of the gas water heater and also to the stainless steel flue pipe.

[0025] To facilitate the installation of the one-way valve cover 11, the first pipe body 12 is provided with a flared section (a section of the first pipe body 12 is flared using a flaring device to increase its inner and outer diameters). The inner diameter of the flared section is larger than the outer diameter of the second pipe body 13. The flared section is located on the side of the first pipe body 12 closer to the second pipe body 13, and its end is welded to the cover ring 14. The end of the first pipe body 12 away from the flared section has an inwardly rolled edge punched inwards. At the same time, both ends of the second pipe body 13 also have inwardly rolled edges punched inwards, reducing sharpness and preventing cuts to operators.

[0026] The top of the cover ring 14 is bent to form an insertion groove. The flared end of the first tube 12 is inserted into the insertion groove and then welded to the cover ring 14. The insertion groove not only ensures the positioning and insertion of the cover ring 14 and the first tube 12, but also increases the contact area between the cover ring 14 and the first tube 12, improving the stability of the connection between the first tube 12 and the cover ring 14 after welding.

[0027] Reference Figure 1 and Figure 2 The tops of the second tube 13 and the first tube 12 are located above the cover ring 14, thus providing space for the installation of the rotating structure of the one-way valve cover 11 and the elastic adjustment assembly 3. A U-shaped rotating frame 15 is welded to the top of the cover ring 14. The rotating frame 15 is located inside the first tube 12 and between the first tube 12 and the second tube 13. A rotating shaft is inserted through the rotating frame 15. Both ends of the rotating shaft protrude from the rotating frame 15 and abut against the inner wall of the first tube 12, so the rotating shaft is not prone to axial movement and disengagement from the rotating frame 15. The one-way valve cover 11 is rotatably connected to the rotating shaft to achieve rotation relative to the second tube 13, thereby realizing the function of opening or closing.

[0028] A torsion spring (not shown in the figure) is fitted on the rotating shaft. One leg of the torsion spring abuts against the top of the one-way valve cover 11, and the other leg abuts against the inner wall of the first pipe body 12. Thus, when the fan inside the gas water heater is not rotating, the one-way valve cover 11 can automatically close under the action of the torsion spring. When the constraint force of the elastic adjustment component 3 on the elastic element 2 is removed, the force of the elastic element 2 driving the one-way valve cover 11 to open is greater than the force of the torsion spring driving the one-way valve cover 11 to close. Therefore, the elastic element 2 can overcome the elastic force of the torsion spring to drive the one-way valve cover 11 to open.

[0029] Reference Figures 2 to 4 The elastic adjustment assembly 3 includes a hand-tightening column 31 and a steel wire rope 32. The hand-tightening column 31 is rotatably mounted on the first tube 12, with one side of the hand-tightening column 31 exposed outside the valve body 1 for user rotation. The steel wire rope 32 is wound around the hand-tightening column 31, with one end fixedly connected to the outer wall of the hand-tightening column 31 and the other end fixedly connected to the elastic element 2. The elastic element 2 is a V-shaped spring, and the included angle is obtuse when the elastic element 2 is in the relaxed state; one side of the elastic element 2 is welded to the inner wall of the second tube 13. When the elastic element 2 does not drive the one-way valve cover 11 to open, the steel wire rope 32, after being wound around the hand-tightening column 31, applies tension to the side of the elastic element 2 that contacts the one-way valve cover 11, causing the elastic element 2 to deform and thus close the one-way valve. When the elastic element 2 needs to open the one-way valve cover 11, the hand-tightening column 31 is rotated, causing the steel wire rope 32 wound on the hand-tightening column 31 to loosen. The elastic element 2 will then recover its deformation under its own elastic potential energy, opening the one-way valve cover 11. The steel wire rope 32 is welded and fixed to the hand-tightening column 31, and a fluororubber sleeve is fitted on the steel wire rope 32 to prevent it from rusting due to prolonged contact with flue gas.

[0030] In detail, the outer wall of the first tube 12 has a through-hole, and a first fluororubber ring 16 is inserted into the through-hole. The outer wall of the first fluororubber ring 16 has a first annular groove in its axial middle portion. The wall of the hole at the through-hole is tightly inserted into the first annular groove, preventing the first fluororubber ring 16 from wobbling along the direction of the through-hole, thus improving the stability and sealing of the connection. Due to the elasticity of the first fluororubber ring 16, it can be deformed and installed into the through-hole during assembly. The hand-tightening pin 31 is inserted and passes through the first fluororubber ring 16. The hand-tightening pin 31 and the first fluororubber ring 16 fit tightly together, making it difficult for flue gas in the valve body 1 to leak. It also dampens the rotation of the hand-tightening pin 31, preventing it from rotating under the elastic force of the elastic element 2. In another embodiment, the hand-tightening pin 31 can be directly inserted into the through-hole.

[0031] The hand-tightening column 31 has a head on the side exposed outside the first tube 12. The outer diameter of the head is larger than the aperture of the first rubber ring, thus the head acts as a stop. Two lugs are evenly spaced around the head to facilitate the user's rotation of the hand-tightening column 31. The steel wire rope 32 is entirely wound around the part of the hand-tightening column 31 located inside the first tube 12.

[0032] Reference Figures 2 to 4 The outer wall of the second tube 13 has a through hole located inside the flared section of the first tube 12 and above the cover ring 14. A stamped ring 21 is punched on the side of the elastic element 2 that connects to the inner wall of the second tube 13. The hole in the stamped ring 21 penetrates the corresponding part of the elastic element 2, and the stamped ring 21 is inserted into the through hole, thus providing a positioning function during assembly. A second fluororubber ring 17 is inserted into and tightly fitted within the stamped ring 21. The outer wall of the axial center of the second fluororubber ring 17 has a second annular groove. The stamped ring 21 is tightly inserted into the second annular groove, preventing the second fluororubber ring 17 from shaking along its extension direction. A steel wire rope 32 passes through the second fluororubber ring 17 and is in close contact with it, thus providing a sealing function.

[0033] A connecting piece is stamped on the bottom of the side of the elastic element 2 that contacts the one-way valve cover 11. The connecting piece has a through hole for the steel wire rope 32 to pass through. After the steel wire rope 32 passes through the through hole, it is fixed by a thin steel wire lock (existing technology, a fastener used to fix the end of the steel wire after bending it into a ring), so that the steel wire rope 32 is fixedly connected to the elastic element 2.

[0034] The implementation principle of a gas water heater exhaust valve according to an embodiment of this application is as follows: the valve body 1 is directly connected to the gas water heater. The elastic element 2 and the elastic adjustment component 3 are both located on the valve body 1, eliminating the need for additional pipes to accommodate the elastic element 2 and the elastic adjustment component 3. This reduces space requirements and lowers costs. Furthermore, one side of the elastic adjustment component 3 is exposed outside the valve body 1 for easy user operation and rotation. When the elastic adjustment component 3 is rotated, it gradually releases the elastic element 2. Under its own elastic force, the elastic element 2 pushes open the valve cover. This design involves fewer parts, simplifies production, and reduces production costs. During assembly, it is only necessary to ensure that the elastic element 2 can push open the one-way valve cover 11, resulting in a high tolerance for errors. The first fluororubber ring 16 and the second fluororubber ring 17 not only seal the mating area to prevent gas leakage from the valve body 1 but also dampen the rotation of the hand-tightening column 31, preventing it from rotating under the elastic force of the elastic element 2. The temperature of flue gas produced by gas water heaters is generally between 120℃ and 200℃. Fluororubber materials can work stably for a long time at high temperatures of 200℃ to 250℃, thus making the entire flue valve have a long service life.

[0035] Similarly, the components included in the "components," "mechanisms," and "devices" of this disclosure can also be flexibly combined. They can be modularly produced according to actual needs and assembled as an independent module; or they can be assembled separately to form a module in this device. The division of the above-mentioned components in this disclosure is only one embodiment for ease of reading and is not intended to limit the scope of protection of this disclosure. Any technical solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this disclosure.

[0036] In the description of this disclosure, 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 disclosure 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 disclosure.

[0037] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0039] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" 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.

[0040] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. A flue gas water heater exhaust valve characterized by: The device includes a valve body (1), an elastic element (2), and a spring adjustment assembly (3). The valve body (1) is adapted to be directly installed on the top of a gas water heater. A one-way valve cover (11) is rotatably provided inside the valve body (1). One side of the elastic element (2) is fixedly connected to the one-way valve cover (11), and the other side is fixedly connected to the inner wall of the valve body (1) to drive the one-way valve cover (11) to open. The spring adjustment assembly (3) is rotatably connected to the valve body (1). The component (3) is connected to the position where it contacts the elastic element (2) and the one-way valve cover (11) to be adapted to drive the elastic element (2) to undergo elastic deformation and constrain the elastic element (2) so as to close the one-way valve cover (11); one side of the elastic force adjustment component (3) is exposed outside the valve body (1); when the elastic force adjustment component (3) is driven to rotate, the elastic element (2) is adapted to drive the one-way valve cover (11) to open under its own elastic force.

2. A flue gas water heater drain valve according to claim 1, characterised in that: The valve body (1) is provided with a torsion spring, which is adapted to drive the one-way valve cover (11) to remain closed; when the constraint force of the elastic adjustment component (3) on the elastic element (2) is removed, the force of the elastic element (2) driving the one-way valve cover (11) to open is greater than the force of the torsion spring driving the one-way valve cover (11) to close.

3. The flue gas water heater exhaust valve of claim 1, wherein: The elastic adjustment component (3) includes a hand-tightening column (31) and a steel wire rope (32). The hand-tightening column (31) is rotatably connected to the valve body (1), and one side of the hand-tightening column (31) is exposed outside the valve body (1). The steel wire rope (32) is wound around the hand-tightening column (31). One end of the steel wire rope (32) is fixedly connected to the outer wall of the hand-tightening column (31), and the other end is fixedly connected to the elastic element (2).

4. A flue gas water heater drain valve according to claim 3, characterised in that: The valve body (1) includes a first tube (12), a second tube (13), and a cover ring (14). The first tube (12) has a flared section with an inner diameter larger than the outer diameter of the second tube (13). The cover ring (14) is fitted onto the second tube (13) and fixedly connected to it. The end of the flared section near the second tube (13) is fixedly connected to the cover ring (14). One end of the second tube (13) is inserted into the first tube (12). The one-way valve cover (11) is adapted to cover the end of the second tube (13) located inside the first tube (12). The elastic element (2) is fixedly installed inside the second tube (13). The hand-tightening column (31) is rotatably installed on the first tube (12).

5. A flue gas water heater drain valve according to claim 4 wherein: The outer wall of the first tube (12) is provided with a rotating hole, and the hand-tightening column (31) is rotatably inserted into the rotating hole.

6. A flue gas water heater drain valve according to claim 5 wherein: A first fluororubber ring (16) is inserted into the rotating hole, and a hand-tightening post (31) is inserted and passes through the first fluororubber ring (16). The hand-tightening post (31) is in close contact with the first fluororubber ring (16).

7. A flue gas water heater drain valve according to claim 4 wherein: The outer wall of the second tube (13) is provided with a through hole, which is located inside the flared section, and the wire rope (32) passes through the through hole.

8. A flue gas water heater drain valve according to claim 7, characterised in that: The elastic element (2) is a V-shaped spring sheet. A stamping ring (21) is stamped on the side of the elastic element (2) that is connected to the inner wall of the second tube (13). The stamping ring (21) is inserted into the through hole, and the steel wire rope (32) passes through the stamping ring (21).

9. The flue gas valve for a gas water heater according to claim 8, characterized in that: A second fluororubber ring (17) is inserted and tightly fitted inside the stamping ring (21), and the steel wire rope (32) passes through the second fluororubber ring (17) and is in close contact with the second fluororubber ring (17).

10. The flue gas valve for a gas water heater according to claim 4, characterized in that: The cover ring (14) is bent to have a plug-in ring groove, and one end of the first tube (12) is inserted into the plug-in ring groove.

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