Adapter-free vertical gas proportional valve

Abstract

The utility model relates to the technical field of proportional valves, and particularly provides a non-switching vertical gas proportional valve which comprises a valve body, a gas cut-off part, a gas proportional control part, a first valve cavity and a second valve cavity, the first valve cavity and the second valve cavity are communicated and arranged in the valve body, and the first valve cavity and the second valve cavity are communicated and arranged in the valve body. The first valve cavity is internally provided with a first valve hole, the fuel gas cut-off part is fixedly connected to the first valve cavity, the first valve cavity is further provided with an air inlet hole to be connected with a fuel gas source, the second valve cavity is divided into an upper proportional cavity and a lower proportional cavity which are communicated with each other, the first valve cavity is communicated with the upper proportional cavity, and the lower proportional cavity is communicated with the lower proportional cavity. The gas proportion control part controls the size of the communicating position between the upper proportion cavity and the lower proportion cavity, and a gas outlet hole is formed in the second valve cavity and communicates with the lower proportion cavity. According to the utility model, the risk of gas leakage is reduced.

Description

Technical Field

[0001] This utility model relates to the field of proportional valve technology, and in particular to a non-interchangeable vertical column gas proportional valve. Background Technology

[0002] Currently, in the field of RV water heaters, gas proportional valves are an important component.

[0003] Currently, proportional valves on the market require metal bends to connect their inlets to the valve itself, and vice versa. This not only makes installation cumbersome and costly but also increases the number of gas connection points, raising the risk of gas leaks. Therefore, this application proposes a direct-connection vertical column gas proportional valve. Utility Model Content

[0004] The purpose of this utility model is to provide a vertical gas proportional valve without adapters to solve the problems of complicated installation and high risk of gas leakage in current RV proportional valves.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A transitionless vertical gas proportional valve includes a valve body, a gas shut-off section, and a gas proportional control section. The valve body has a first valve chamber and a second valve chamber that communicate with each other. The first valve chamber has a first valve orifice. The gas shut-off section is fixedly connected to the first valve chamber and is used to control the opening of the first valve orifice. The first valve chamber also has an air inlet for connecting to a gas source. The second valve chamber is divided into an upper proportional chamber and a lower proportional chamber that communicate with each other. The first valve chamber communicates with the upper proportional chamber. The gas proportional control section controls the size of the connection between the upper and lower proportional chambers. The second valve chamber has an air outlet that communicates with the lower proportional chamber.

[0007] Furthermore, the valve body is provided with a flange and a threaded connection hole at the position of the air outlet.

[0008] Furthermore, a first machining hole is provided on the side of the valve body opposite to the gas cut-off part and the gas proportional control part, and the first machining hole is sealed by a sealing plate.

[0009] Furthermore, the sealing plate is also provided with a mounting base, which is perpendicular to the operating direction of the gas cut-off part and the gas proportional control part actuator.

[0010] Furthermore, the gas shut-off part and the gas proportional control part are installed on the same surface of the valve body.

[0011] Furthermore, an air inlet nozzle is also provided on the air inlet.

[0012] Furthermore, the proportional valve also includes:

[0013] The air distribution rod is fixedly connected to the air outlet.

[0014] In summary, the present invention has the following advantages compared with the prior art:

[0015] The non-interchangeable vertical gas proportional valve disclosed in this embodiment integrates the gas cut-off part and the gas proportional control part into a single valve body. The gas cut-off part and the gas proportional control part are connected by a channel inside the valve body. Compared with the prior art, it eliminates the pipes between the air inlet, the gas source, the air outlet, and the gas distribution rod, which not only reduces costs but also reduces the risk of gas leakage. Attached Figure Description

[0016] Figure 1 This is a first-view structural schematic diagram of the non-transfer vertical gas proportional valve disclosed in Embodiment 1 of this utility model.

[0017] Figure 2 This is a structural schematic diagram of the non-transfer vertical gas proportional valve disclosed in Embodiment 1 of this utility model from a second perspective.

[0018] Figure 3 This is a front view of the non-transfer vertical gas proportional valve disclosed in an embodiment of this utility model.

[0019] Figure 4 for Figure 3 Sectional view of AA.

[0020] Figure 5 for Figure 3 The left view.

[0021] Figure 6 for Figure 5 A cross-sectional view of BB.

[0022] Figure 7 This is a schematic diagram of the structure of the vertical gas ratio without transfer disclosed in Embodiment 2 of this utility model.

[0023] Figure label:

[0024] 100. Valve body; 101. Sealing plate; 102. Mounting base; 110. First valve chamber; 111. First valve hole; 112. Air inlet; 113. Upper shut-off chamber; 114. Lower shut-off chamber; 120. Second valve chamber; 121. Connecting hole; 122. Air outlet; 123. Upper proportional chamber; 124. Lower proportional chamber; 125. Second valve hole; 200. Gas shut-off section; 300. Gas proportional control section; 400. Air inlet nozzle; 500. Gas distributor rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] like Figures 1 to 6 As shown in the figure, an embodiment of the present invention provides a non-transfer vertical gas proportional valve. The proportional valve includes a valve body 100, a gas shut-off part 200, and a gas proportional control part 300. The valve body 100 is provided with a first valve chamber 110 and a second valve chamber 120 that communicate with each other. The first valve chamber 110 is provided with a first valve hole 111. The gas shut-off part 200 is fixedly connected to the first valve chamber 110 and is used to control the opening of the first valve hole 111. The first valve hole 111 is also provided with an air inlet 112 for connecting to a gas source. The first valve chamber 110 communicates with the interior of the gas proportional control part 300. The gas proportional control part 300 is fixed to the second valve chamber 120 to control the gas flow rate. The second valve chamber 120 is provided with an air outlet 122 for connecting to a gas device.

[0028] In this embodiment, both the first valve chamber 110 and the second valve chamber 120 are located within the valve body 100. The gas cut-off part 200 and the gas proportional control part 300 are fixed to the valve body 100. The channel between the gas cut-off part 200 and the gas proportional control part 300 is formed by the valve body 100, eliminating the need for pipeline connections between them, thus saving on interfaces and pipelines and reducing costs. Simultaneously, the first valve chamber 110 and the second valve chamber 120 are connected by an internal channel, reducing the risk of gas leakage. When the proportional valve is operating, gas enters the first valve chamber 110 through the first valve hole 111 and is controlled by the gas cut-off part 200 to open and close the first valve chamber 110. When the gas cut-off part 200 is open, the gas entering the second valve chamber 120 has its flow rate controlled by the gas proportional control part 300, thereby controlling the ratio of gas to air.

[0029] The non-interchangeable vertical gas proportional valve disclosed in this embodiment integrates the gas cut-off part 200 and the gas proportional control part 300 into a valve body 100. The gas cut-off part 200 and the gas proportional control part 300 are connected by a channel inside the valve body 100. Compared with the prior art, the pipes between the air inlet 112 and the gas source, and between the air outlet 122 and the gas distribution rod 500 are eliminated, which not only reduces costs, but also reduces the risk of gas leakage.

[0030] Specifically, in this embodiment, the valve body 100 is manufactured by casting. The valve body 100 is a cast iron structure and has a square structure. The first valve cavity 110 and the second valve cavity 120 are respectively disposed on different sides of the valve body 100. The first valve gun is divided into an upper stop cavity 113 and a lower stop cavity 114 by a first partition. The air inlet 112 is connected to the upper stop cavity 113. The first valve hole 111 is disposed on the first partition to connect the upper stop hole and the lower stop hole. The second valve cavity 120 is divided into an upper proportional cavity 123 and a lower proportional cavity 124 by a second partition. A second valve hole 125 is disposed on the upper second partition to connect the upper proportional cavity 123 and the lower proportional cavity 124. The upper proportional cavity 124 is connected to the stop cavity 114 through the connecting hole 121.

[0031] Both the gas shut-off part 200 and the gas proportional control part 300 are existing technologies. They are fixedly connected to the valve body 100 by bolts. The first valve chamber 110 and the second valve chamber 120 are respectively provided with mounting holes on the top of the valve body 100 for mounting the gas shut-off part 200 and the gas proportional control part 300. The actuators of the gas shut-off part 200 and the gas proportional control part 300 are respectively installed in the first valve chamber 110 and the second valve chamber 120 through the mounting holes. In this embodiment, the... The gas shut-off section 200 and the gas proportional control section 300 are respectively the electromagnetic actuators in the shut-off valve and proportional valve in the prior art. For example, the gas shut-off section 200 includes a first solenoid valve and a first valve core. The first solenoid valve drives the first valve core to move up and down, so that the first valve core blocks or opens the first valve hole 111, thereby opening or closing the gas passage. The gas proportional control section 300 includes a second solenoid valve and a second valve core. The second solenoid valve controls the passage between the second valve core and the second valve hole 125 by moving the second valve core up and down, thereby controlling the gas flow rate.

[0032] In a preferred embodiment of this invention, the valve body 100 has a first machining hole on the side opposite to the gas shut-off part 200 and the gas proportional control part 300. The first machining hole facilitates the machining of the first valve chamber 110 and the second valve chamber 120 by a machine tool. The first machining hole is sealed by a mounting base 101, which is fixedly connected to the first machining hole by screws. A sealing ring is provided between the mounting base 101 and the valve body 100 to improve the sealing effect.

[0033] Preferably, the mounting base 101 is further provided with a mounting base 102, which is perpendicular to the operating direction of the gas shut-off part 200 and the gas proportional control part 300 actuator. The gas shut-off part 200 and the gas proportional control part 300 are mounted on the same surface of the valve body 100. This ensures that when the proportional valve is installed, the direction of the inner membrane of the gas shut-off part 200 and the gas proportional control part 300 is parallel to the mounting base 102, and the operating direction is perpendicular to the mounting base 102. When the mounting base 102 is installed horizontally, the direction of the inner membrane of the gas shut-off part 200 and the gas proportional control part 300 is parallel to the horizontal plane, and the operating direction of the gas shut-off part 200 and the gas proportional control part 300 coincides with the direction of gravity.

[0034] In a preferred embodiment of this invention, an air inlet 400 is also provided on the first valve hole 111 for connecting to an air source.

[0035] Example 2

[0036] As another embodiment of this utility model, such as Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that the proportional valve further includes:

[0037] The air distribution rod 500 is fixedly connected to the air outlet 122;

[0038] In this embodiment, the gas distribution rod 500 is a prior art technology, and the gas distribution rod 500 is provided with a gas nozzle for injecting gas into the burner.

[0039] In a preferred embodiment of this invention, the air outlet 122 is provided with a flange and a threaded connection hole, and the air distribution rod 500 is connected to the valve body 100 by threads.

[0040] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0041] It should be understood that although the terms first, second, third, etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-interchangeable vertical gas proportional valve, comprising a valve body, a gas shut-off section, and a gas proportional control section, characterized in that, The valve body is provided with a first valve chamber and a second valve chamber that are connected to each other. The first valve chamber is provided with a first valve hole. The gas shut-off part is fixedly connected to the first valve chamber and is used to control the opening of the first valve hole. The first valve chamber is also provided with an air inlet for connecting to a gas source. The second valve chamber is divided into an upper proportional chamber and a lower proportional chamber that are interconnected. The first valve chamber is connected to the upper proportional chamber. The gas proportional control unit controls the size of the connection between the upper and lower proportional chambers. The second valve chamber is provided with an air outlet that is connected to the lower proportional chamber.

2. The non-interchangeable vertical gas proportional valve according to claim 1, characterized in that, The valve body is provided with a flange and a threaded connection hole at the air outlet position.

3. The non-interchangeable vertical gas proportional valve according to claim 1, characterized in that, The valve body has a first machining hole on the side opposite to the gas cut-off part and the gas proportional control part, and the first machining hole is sealed by a sealing plate.

4. The non-interchangeable vertical gas proportional valve according to claim 3, characterized in that, The sealing plate is also provided with a mounting base, which is perpendicular to the operating direction of the gas cut-off part and the gas proportional control part actuator.

5. The non-interchangeable vertical gas proportional valve according to claim 4, characterized in that, The gas shut-off section and the gas proportional control section are installed on the same side of the valve body.

6. The non-interchangeable vertical gas proportional valve according to any one of claims 1-5, characterized in that, The air inlet is also equipped with an air inlet nozzle.

7. The non-interchangeable vertical gas proportional valve according to any one of claims 1-5, characterized in that, The proportional valve also includes: The air distribution rod is fixedly connected to the air outlet.

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