Novel gas valve

Abstract

The utility model relates to a novel gas valve which comprises a valve body and a valve rod movably arranged on the valve body, and a gas conveying pipeline, a side gas inlet channel and a gas inlet switch valve are arranged on the valve body. The fuel gas conveying pipeline is used for conveying fuel gas to center fire and outer ring fire of the gas stove; the side gas inlet channel is communicated with a fuel gas conveying pipeline; the air inlet switch valve is arranged on the side air inlet channel and used for opening and closing the air outlet end of the side air inlet channel. A transmission assembly used for triggering the air inlet switch valve to be opened is arranged between the valve body and the valve rod, and the position heights of the transmission assembly and the air inlet switch valve on the valve body correspond to each other. The gas inlet switch valve is in an open state, and gas enters the gas conveying pipeline along the side gas inlet channel. The position heights of the transmission assembly and the gas inlet switch valve on the valve body correspond to each other, a transmission structure for opening an electromagnetic valve at the bottom of the valve body of the gas valve is omitted, and the gas leakage phenomenon at the bottom of the valve body of the gas valve is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gas stove accessories, in particular to a novel gas valve. Background Art

[0002] The working principle and structure of the gas valve of the gas stove mainly include the following aspects: The gas valve is the core component of the gas stove, which is mainly responsible for controlling the flow of gas. When the knob of the gas stove is pressed, the ejector pin and the crank rod in the valve body will be pushed, thereby opening the solenoid valve.

[0003] The transmission parts such as the ejector pin and the crank lever are usually arranged at the bottom of the gas valve body, which makes the gas valve body larger and also causes gas leakage at the bottom of the gas valve body. For example, Chinese Patent No. ZL201611007248.6 discloses a gas valve for a gas stove, including a body, a bottom cover plate, a valve cover, a valve core, a valve stem, a spring, a transmission driver and a solenoid valve. The body is provided with a valve core cavity, a bottom cavity with a lower opening, a solenoid valve core cavity, an air inlet interface, a first air outlet interface and a second air outlet interface. The air inlet interface is communicated with the solenoid valve core cavity, the inner interface of the cover body of the valve cover is plugged with the outer interface of the valve core cavity, the valve cover is fixedly connected to the body, the upper end of the valve core cooperates with the top plate of the cover body to stop; the upper end of the valve stem passes through the valve stem channel and extends out of the valve cover, the lower end of the valve stem is located in the upper cylinder of the valve core, and the guide rod is slidably matched with the axial guide groove; the ejector rod is located in the lower inverted frustum cone cylinder and cooperates with the driver.

[0004] In addition, the installation position of the solenoid valve is parallel to the gas delivery pipeline, which causes interference when the gas valve is installed on the gas stove. Utility Model Content

[0005] The utility model aims to provide a new type of gas valve, in which the transmission assembly and the air intake switch valve are arranged at corresponding heights on the valve body, and the transmission structure for opening the solenoid valve at the bottom of the gas valve body is eliminated, thereby avoiding gas leakage at the bottom of the gas valve body.

[0006] A new type of gas valve designed for this purpose includes a valve body and a valve stem movably arranged on the valve body, the valve body is provided with a gas delivery pipeline, a side air intake channel and an air intake switch valve, and the valve body is also provided with a valve cavity for installing the valve stem;

[0007] The gas delivery pipeline is used to deliver gas to the center fire and the outer ring fire of the gas stove;

[0008] The side air intake channel is connected to the gas delivery pipeline;

[0009] The air intake switch valve is arranged on the side air intake passage and is used to open and close the air outlet end of the side air intake passage;

[0010] A transmission assembly for triggering the opening of the intake switch valve is provided between the valve body and the valve stem. The positions of the transmission assembly and the intake switch valve on the valve body are correspondingly arranged in terms of height. The transmission assembly is arranged between the valve cavity and the side intake passage. When the intake switch valve is in the open state, gas enters the gas transmission pipeline along the side intake passage. The positions of the transmission assembly and the intake switch valve on the valve body are correspondingly arranged in terms of height. The transmission structure for opening the solenoid valve at the bottom of the gas valve body is cancelled, and the bottom intake structure of the gas valve is cancelled, avoiding air leakage at the bottom of the gas valve body.

[0011] The side intake passage is inclinedly arranged on the valve body, and an included angle A is formed between the axes of the side intake passage and the gas transmission pipeline.

[0012] The included angle A is 25° to 40°.

[0013] The included angle A is 25°, 30°, 35° or 40°.

[0014] The transmission assembly includes a rotating block arranged on the valve stem.

[0015] A first limiting part is arranged between the rotating block and the valve body.

[0016] When the valve stem is in a pending state, the first limiting part acts on the rotating block to prevent the valve stem from driving the rotating block to rotate, avoiding the user accidentally triggering the opening of the solenoid valve when the valve stem is in the pending state.

[0017] The transmission assembly includes a push rod that reciprocates elastically along the intake switch valve and a rotating block sleeved on the outer side of the valve stem.

[0018] A first limiting part is arranged between the rotating block and the valve body. The valve stem drives the rotating block to move axially in the up and down direction of the valve body. The rotating block disengages from the first limiting part, and the valve stem drives the rotating block to rotate to a corresponding position and drives the push rod to move to trigger the opening of the intake switch valve. Only when the user presses down the valve stem and the rotating block disengages from the first limiting part can the user then drive the rotating block to move, avoiding the user freely rotating the valve stem when the valve stem is in the pending state.

[0019] A second limiting part is arranged between the rotating block and the valve body. During the process that the valve stem drives the rotating block to rotate to a corresponding position to drive the push rod to move, the rotating block acts on the second limiting part to limit the rotational displacement of the rotating block in the valve body.

[0020] The rotating block is provided with a convex block, and the convex block protrudes from the outer side of the rotating block. The rotating block rotates to a corresponding position and drives the push rod to move through the convex block.

[0021] The valve body is provided with a notch and a limiting groove corresponding to the ejector rod. One end of the ejector rod is inserted into the notch. The ejector rod is provided with a limiting ring that acts on the notch. The ejector rod is provided with a first spring. The ejector rod is inserted into the limiting groove, and the other end of the ejector rod is inserted into the notch. The first spring is sleeved outside the ejector rod. One end of the first spring abuts against the limiting ring of the ejector rod, and the other end of the first spring abuts against the limiting groove. Under the elastic action of the first spring, the limiting ring abuts against one side of the notch. The ejector rod makes an elastic reciprocating motion along the limiting groove and the intake switch valve through the first spring.

[0022] The valve body is provided with a metal sheet for contacting the switch wire of the pulse igniter. When the intake switch valve is in the open state, the metal sheet cooperates with the switch wire of the pulse igniter to trigger ignition.

[0023] The valve body is provided with a valve cavity for installing a rotating block, a valve core and a second spring. The valve rod is inserted into the valve cavity and connected to the rotating block and the valve core. The second spring is arranged between the rotating block and the valve core. The valve rod drives the rotating block to make an up-and-down elastic motion along the valve core through the second spring. When the valve rod drives the rotating block and the valve core to rotate, the rotating block and the valve core are limited to rotate in the valve cavity;

[0024] The bottom end of the valve cavity is a closed end, avoiding the phenomenon of air leakage (gas leakage) at the bottom of the gas valve cavity;

[0025] The intake switch valve is a solenoid valve, a self-priming valve or a steady-state valve.

[0026] The utility model has the following beneficial effects:

[0027] The positions and heights of the transmission assembly and the intake switch valve on the valve body are correspondingly arranged. The transmission structure for opening the solenoid valve at the bottom of the gas valve body is cancelled, avoiding the phenomenon of air leakage at the bottom of the gas valve body and saving the installation space of the gas valve body;

[0028] The side intake passage is inclinedly arranged on the valve body. An included angle A is formed between the axes of the side intake passage and the gas transmission pipeline, avoiding interference between the solenoid valve and the gas transmission pipeline when the gas valve is installed on the gas stove, and also avoiding interference between the solenoid valve and the gas transmission pipeline when the gas valve needs to be repaired and disassembled on the gas stove. Brief Description of the Drawings

[0029] Figure 1 It is a three-dimensional structural schematic diagram of a gas valve according to an embodiment of the utility model.

[0030] Figure 2 It is a planar structural schematic diagram of a gas valve according to an embodiment of the utility model.

[0031] Figure 3 It is an internal structural schematic diagram of a gas valve according to an embodiment of the utility model.

[0032] Figure 4 Schematic diagram of the internal cross-sectional structure of a gas valve according to an embodiment of the present utility model.

[0033] Figure 5 Schematic diagram of the three-dimensional cross-sectional structure of a gas valve according to an embodiment of the present utility model.

[0034] Figure 6 Schematic diagram of the structure of a gas valve with a limiting portion according to an embodiment of the present utility model.

[0035] Figure 7 Schematic diagram of the disassembled structure of the valve stem, rotating block and valve core assembly according to an embodiment of the present utility model.

[0036] Figure 8 Schematic diagram of the three-dimensional structure of the valve stem, transmission assembly and intake switch valve according to an embodiment of the present utility model.

[0037] Figure 9 Schematic diagram of another orientation structure of a gas valve with a limiting portion according to an embodiment of the present utility model. Detailed implementation manners

[0038] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0039] Refer to Figures 1-9 , a new type of gas valve, including a valve body 1 and a valve stem 2 movably arranged on the valve body 1. A gas transmission pipeline 3, a side air intake passage 4 and an intake switch valve 5 are provided on the valve body 1. A valve cavity 17 for installing the valve stem 2 is also provided on the valve body 1;

[0040] The gas transmission pipeline 3 is used to transport natural gas to the central fire and outer ring fire of the gas stove;

[0041] The side air intake passage 4 is communicated with the gas transmission pipeline 3;

[0042] The intake switch valve 5 is arranged on the side air intake passage 4 and is used to open and close the outlet end of the side air intake passage 4;

[0043] A transmission assembly 6 for triggering the opening of the intake switch valve 5 is provided between the valve body 1 and the valve stem 2. The positions of the transmission assembly 6 and the intake switch valve 5 on the valve body 1 are correspondingly arranged in height. The transmission assembly 6 is arranged between the valve cavity 17 and the side air intake passage 4. When the intake switch valve 5 is in the open state, gas enters the gas transmission pipeline 3 along the side air intake passage 4.

[0044] The side air intake passage 4 is inclinedly arranged on the valve body 1, and an included angle A is formed between the axes of the side air intake passage 4 and the gas transmission pipeline 3;

[0045] The included angle A is 25° to 40°.

[0046] The included angle A is 25°, 30°, 35° or 40°.

[0047] The transmission assembly 6 includes a rotating block 8 provided on the valve stem 2;

[0048] A first limiting portion 9 is provided between the rotating block 8 and the valve body 1;

[0049] The valve stem 2 is in a pending state, and the first limiting portion 9 acts on the rotating block 8 to prevent the valve stem 2 from driving the rotating block 8 to rotate.

[0050] The transmission assembly 6 includes a push rod 7 that reciprocates elastically along the intake switch valve 5 and a rotating block 8 sleeved on the outer side of the valve stem 2;

[0051] A first limiting portion 9 is provided between the rotating block 8 and the valve body 1. The valve stem 2 drives the rotating block 8 to perform an axial movement in the up and down direction of the valve body 1. The rotating block 8 disengages from the first limiting portion 9. The valve stem 2 drives the rotating block 8 to rotate to a corresponding position and drives the push rod 7 to move to trigger the intake switch valve 5 to open.

[0052] A second limiting portion 10 is provided between the rotating block 8 and the valve body 1. During the process that the valve stem 2 drives the rotating block 8 to rotate to a corresponding position to drive the push rod 7 to move, the rotating block 8 acts on the second limiting portion 10 to limit the rotational displacement of the rotating block 8 in the valve body 1.

[0053] The rotating block 8 is provided with a convex block 11, and the convex block 11 protrudes from the outer side of the rotating block 8. The rotating block 8 rotates to a corresponding position and drives the push rod 7 to move through the convex block 11.

[0054] The valve body 1 is provided with a notch 12 and a limiting groove 14 corresponding to the push rod 7. One end of the push rod 7 is inserted into the notch 12. The push rod 7 is provided with a limiting ring 13 that acts on the notch 12. The push rod 7 is provided with a first spring 15. The push rod 7 is inserted into the limiting groove 14, and the other end of the push rod 7 is inserted into the notch 12. The first spring 15 is sleeved on the outer side of the push rod 7. One end of the first spring 15 abuts against the limiting ring 13 of the push rod 7, and the other end of the first spring 15 abuts against the limiting groove 14. The limiting ring 13 abuts against one side of the notch 12 under the elastic action of the first spring 15. The push rod 7 reciprocates elastically along the limiting groove 14 and the intake switch valve 5 through the first spring 15.

[0055] The valve body 1 is provided with a metal sheet 16 for contacting the switch wire of the pulse igniter. When the intake switch valve 5 is in the open state, the metal sheet 16 cooperates with the switch wire of the pulse igniter and triggers ignition.

[0056] The valve body 1 is provided with a valve cavity 17 for installing a rotating block 8, a valve core 18 and a second spring 19. A valve rod 2 is inserted into the valve cavity 17 and connected to the rotating block 8 and the valve core 18. The second spring 19 is arranged between the rotating block 8 and the valve core 18. The valve rod 2 drives the rotating block 8 to make an up-and-down elastic movement along the valve core 18 through the second spring 19. When the valve rod 2 drives the rotating block 8 and the valve core 18 to rotate, the rotating block 8 and the valve core 18 are rotationally limited within the valve cavity 17;

[0057] The bottom end of the valve cavity 17 is a closed end;

[0058] The intake switch valve 5 is a solenoid valve, a self-priming valve or a steady-state valve.

[0059] The solenoid valve is responsible for keeping the valve open when gas passes through and quickly closing the valve in case of accidental flameout to prevent gas leakage.

[0060] The flameout protection function of the gas stove is realized by a thermocouple sensing needle. When the flame is burning, the thermocouple generates an electromotive force to keep the solenoid valve open. Once the flame goes out, the electromotive force of the thermocouple disappears, and the solenoid valve closes to cut off the gas passage and prevent gas leakage.

[0061] In this embodiment, the rotating block 8 is provided with a square-shaped insertion hole 20, the valve rod 2 is provided with a plug-in block 21 inserted into the insertion hole 20, the valve core 18 is inserted into the rotating block 8, and the plug-in block 21 of the valve rod 2 is inserted into the rotating block 8 along the insertion hole 20 and inserted onto the insertion slot 22 of the valve core 18. When the valve rod 2 is pressed down, the plug-in block 21 moves downward along the insertion slot 22, and the insertion slot 22 plays a guiding role.

[0062] In this embodiment, the outer side of the convex block 11 is arc-shaped.

[0063] In this embodiment, the top of the rotating block 8 is provided with a first limiting convex block 23 that cooperates with the first limiting portion 9. Two first limiting portions 9 are horizontally spaced apart in the valve body 1, and two first limiting convex blocks 23 are horizontally spaced apart on the top of the rotating block 8.

[0064] In this embodiment, the outer side of the rotating block 8 is provided with a second limiting convex block 24 that cooperates with the second limiting portion 10. There are two second limiting convex blocks 24, which are convenient for identifying that the valve rod 2 rotates from the initial position to the final position. When one second limiting convex block 24 acts on one end of the second limiting portion 10, the valve rod 2 is in the initial position. When the valve rod 2 rotates and the other second limiting convex block 24 acts on the other end of the second limiting portion 10, the valve rod 2 is in the final position.

[0065] In this embodiment, the gas delivery pipeline 3 includes a first gas delivery section 26 and a second gas delivery section 27.

[0066] In this embodiment, a gas inlet hole 25 communicating with the outlet end of the side air inlet passage 4 is provided in the valve cavity 17. A first through hole 28 communicating with the first gas delivery section 26 is provided in the valve cavity 17. A second through hole 29 communicating with the second gas delivery section 27 is provided in the valve cavity 17.

[0067] In this embodiment, a connecting passage 30 for connecting to a gas source through a pipeline is provided on the valve body 1. One end of the connecting passage 30 communicates with the inlet end of the side air inlet passage 4. When the intake switch valve 5 is in the closed state, the valve core of the intake switch valve 5 plugs the inlet end of the air inlet passage 4 under the action of elasticity.

[0068] In this embodiment, when the intake switch valve 5 is in the open state, gas enters the valve cavity 17 along the connecting passage 30 and the inlet end of the air inlet passage 4. Part of the gas enters the first gas delivery section 26 through the gas inlet hole 25 and the first through hole 28, and another part of the gas enters the second gas delivery section 27 through the gas inlet hole 25 and the second through hole 29.

[0069] In this embodiment, when the valve rod 2 drives the valve core 18 to rotate and the opening overlapping area between the valve core 18 and each through hole changes, the gas delivery volume can be controlled, thereby controlling the firepower of the center fire and the outer ring fire of the gas stove. This is common general knowledge in the art and will not be elaborated here.

[0070] In this embodiment, the gas enters the valve cavity 17 directly through the connecting passage 30 and into the side air inlet passage 4, eliminating the transmission structure for triggering the opening of the solenoid valve provided at the bottom of the valve cavity 17 of the traditional gas valve and the cover body for fixing the transmission structure, thereby avoiding the phenomenon of gas leakage at the bottom of the valve cavity 17 of the gas valve.

[0071] The above is the preferred solution of the present invention, showing and describing the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of gas valve, comprising a valve body (1) and a valve stem (2) movably arranged on the valve body (1), characterized in that: The valve body (1) is provided with a gas transmission pipeline (3), a side air intake channel (4) and an air intake switch valve (5). The valve body (1) is also provided with a valve cavity (17) for installing a valve stem (2). The gas transmission pipeline (3) is used for delivering gas to the center fire and outer ring fire of the gas stove. The side air intake channel (4) communicates with the gas transmission pipeline (3). The air intake switch valve (5) is arranged on the side air intake channel (4) and is used to open and close the outlet end of the side air intake channel (4). A transmission assembly (6) for triggering the opening of the air intake switch valve (5) is arranged between the valve body (1) and the valve stem (2). The positions and heights of the transmission assembly (6) and the air intake switch valve (5) on the valve body (1) are correspondingly arranged. The transmission assembly (6) is arranged between the valve cavity (17) and the side air intake channel (4). When the air intake switch valve (5) is in the open state, gas enters the gas transmission pipeline (3) along the side air intake channel (4).

2. The novel gas valve according to claim 1, wherein: The side air intake channel (4) is inclinedly arranged on the valve body (1). An included angle A is formed between the axes of the side air intake channel (4) and the gas transmission pipeline (3). The included angle A is 25° to 40°.

3. The novel gas valve according to claim 2, wherein: The included angle A is 25°, 30°, 35° or 40°.

4. The novel gas valve according to claim 1, characterized in that: The transmission assembly (6) includes a rotating block (8) arranged on the valve stem (2). A first limiting part (9) is arranged between the rotating block (8) and the valve body (1). When the valve stem (2) is in a pending state, the first limiting part (9) acts on the rotating block (8) to prevent the valve stem (2) from driving the rotating block (8) to rotate.

5. The novel gas valve according to claim 1, characterized in that: The transmission assembly (6) includes a push rod (7) that reciprocates elastically along the air intake switch valve (5) and a rotating block (8) sleeved on the outer side of the valve stem (2). A first limiting part (9) is arranged between the rotating block (8) and the valve body (1). The valve stem (2) drives the rotating block (8) to move axially in the up and down direction of the valve body (1). The rotating block (8) disengages from the first limiting part (9). The valve stem (2) drives the rotating block (8) to rotate to a corresponding position and drives the push rod (7) to move to trigger the opening of the air intake switch valve (5).

6. The novel gas valve according to claim 5, characterized in that: A second limiting part (10) is arranged between the rotating block (8) and the valve body (1). During the process that the valve stem (2) drives the rotating block (8) to rotate to a corresponding position to drive the push rod (7) to move, the rotating block (8) acts on the second limiting part (10) to limit the rotational displacement of the rotating block (8) in the valve body (1).

7. The novel gas valve according to claim 5, characterized in that: The rotating block (8) is provided with a convex block (11). The convex block (11) protrudes from the outer side of the rotating block (8). The rotating block (8) rotates to a corresponding position and drives the push rod (7) to move through the convex block (11).

8. The novel gas valve according to claim 5, wherein: The valve body (1) is provided with a notch (12) and a limit groove (14) corresponding to the ejector rod (7). One end of the ejector rod (7) is inserted into the notch (12). The ejector rod (7) is provided with a limit ring (13) whose limit action is on the notch (12). The ejector rod (7) is provided with a first spring (15). The ejector rod (7) is inserted into the limit groove (14). The other end of the ejector rod (7) is inserted into the notch (12). The first spring (15) is sleeved outside the ejector rod (7). One end of the first spring (15) abuts against the limit ring (13) of the ejector rod (7), and the other end of the first spring (15) abuts against the limit groove (14). The limit ring (13) abuts against one side of the notch (12) under the elastic action of the first spring (15). The ejector rod (7) makes an elastic reciprocating motion along the limit groove (14) and the intake switch valve (5) through the first spring (15).

9. The novel gas valve according to claim 1, wherein: The valve body (1) is provided with a metal sheet (16) for contacting the switch wire of the pulse igniter. When the intake switch valve (5) is in the open state, the metal sheet (16) cooperates with the switch wire of the pulse igniter and triggers ignition.

10. The novel gas valve according to claim 1, characterized in that: On the valve cavity (17) of the valve body (1), there are provided a rotating block (8), a valve core (18) and a second spring (19). The valve rod (2) is inserted into the valve cavity (17) and is connected to the rotating block (8) and the valve core (18). The second spring (19) is arranged between the rotating block (8) and the valve core (18). The valve rod (2) drives the rotating block (8) to make an up-and-down elastic motion along the valve core (18) through the second spring (19). When the valve rod (2) drives the rotating block (8) and the valve core (18) to rotate, the rotating block (8) and the valve core (18) are rotationally limited within the valve cavity (17); The bottom end of the valve cavity (17) is a closed end; The intake switch valve (5) is a solenoid valve, a self-priming valve or a steady-state valve.

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