CN217464524U

CN217464524U - Valve assembly and gas stove

Info

Publication number: CN217464524U
Application number: CN202221195437.1U
Authority: CN
Inventors: 廖东升; 孙飞; 张炳卫
Original assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-09-20
Anticipated expiration: 2032-05-17

Abstract

The utility model discloses a valve component and a gas stove, wherein the valve component comprises a valve seat and a valve, the valve seat is provided with a gas distribution pipe, and the outer wall of the gas distribution pipe is provided with at least one first mounting part; the valve is connected to the valve seat and comprises a first flange; the first installation part is provided with an installation groove used for embedding the first flange, the shape of the installation groove is matched with that of the first flange, and the first flange is fixedly connected with the first installation part through a fastening piece. The valve is fixed in the first installation department of disk seat, the mounting groove of the first installation department of first flange embedding of valve to the shape of mounting groove matches with the shape of first flange, the first flange of lateral wall butt of mounting groove, thereby prescribe a limit to first flange, play the effect that the restriction rocked, the problem that the screw pine takes off and causes gas leakage when having eliminated long-time use or collision, improves structure steadiness and use reliability.

Description

Valve assembly and gas stove

Technical Field

The utility model relates to a cooking utensils technical field, in particular to valve member and gas-cooker.

Background

The gas-cooker usually has valves such as gas valve or automatically controlled proportional valve in order to control the work of combustor, and among the correlation technique, part gas-cooker has a plurality of combustors, adopts the structure of intake pipe welding flange piece as the disk seat in order to install a plurality of valves, and the flange of valve and the flange piece of disk seat are face contact to adopt the screw fixation, only rely on the screw atress, when using for a long time or colliding, can lead to the screw pine to take off, even cause gas leakage.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a valve component can effectively fixed valve, eliminates not hard up and the problem of gas leakage.

The utility model discloses propose the gas-cooker that has above-mentioned valve member simultaneously.

The valve component according to the embodiment of the first aspect of the utility model comprises a valve seat and a valve, wherein the valve seat is provided with a gas distribution pipe, and the outer wall of the gas distribution pipe is provided with at least one first installation part; the valve is connected to the valve seat and comprises a first flange; the first installation part is provided with an installation groove used for embedding the first flange, the shape of the installation groove is matched with that of the first flange, and the first flange is fixedly connected with the first installation part through a fastening piece.

According to the utility model discloses valve member of first aspect embodiment has following beneficial effect at least: the valve is fixed in the first installation department of disk seat, the mounting groove of the first installation department of first flange embedding of valve to the shape of mounting groove matches with the shape of first flange, the first flange of lateral wall butt of mounting groove, thereby prescribe a limit to first flange, play the effect that the restriction rocked, the problem that the screw pine takes off and causes gas leakage when having eliminated long-time use or collision, improves structure steadiness and use reliability.

According to some embodiments of the first aspect of the present invention, the valve seat is provided with a plurality of the first mounting portions, a plurality of the first mounting portions are along the axial interval distribution of the distribution pipe.

According to the utility model discloses some embodiments of first aspect, the valve includes mechanical valve and automatically controlled valve, mechanical valve includes first flange, automatically controlled valve includes the second flange, the outer wall of gas distribution pipe still is provided with the second installation department, the second flange passes through fastener fixed connection the second installation department.

According to some embodiments of the first aspect of the present invention, the second mounting portion is provided with a convex surface, the second flange is provided with a concave surface, the convex surface with the concave surface looks butt and the shape matches.

According to some embodiments of the first aspect of the present invention, the concave surface is provided with a cartridge portion, the convex surface is provided with a receptacle that cooperates with the cartridge portion.

According to some embodiments of the first aspect of the present invention, the first mounting portion is provided with a plurality of mounting grooves, a plurality of the mounting grooves are along the axial distribution of the distribution pipe.

According to some embodiments of the first aspect of the present invention, two of the mounting grooves are adjacent to each other.

According to some embodiments of the first aspect of the present invention, the valve seat is an integrally formed casting.

According to some embodiments of the first aspect of the present invention, the periphery of the first mounting portion is provided with an annular rib plate, the rib plate forming part of the side wall of the mounting groove.

According to the utility model discloses some embodiments of the first aspect, the outer wall integrated into one piece of distribution pipe has the strengthening rib, the strengthening rib is including crossing a plurality of axial protruding muscle and a plurality of circumference protruding muscle, the protruding muscle of axial is followed the axial of distribution pipe is arranged, the protruding muscle of circumference is followed the circumference of distribution pipe is arranged.

According to the utility model discloses some embodiments of the first aspect, the disk seat is provided with the stabilizer blade, the one end of stabilizer blade is connected the distribution pipe, the other end of stabilizer blade is provided with the bottom plate, the bottom plate is provided with the through-hole for the installation.

According to the second aspect of the present invention, a gas stove comprises a valve assembly according to the first aspect of the present invention.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a first schematic structural view of a valve assembly according to some embodiments of the first aspect of the present invention;

FIG. 2 is a second schematic structural view of the valve assembly of FIG. 1;

FIG. 3 is a first exploded view of the valve assembly of FIG. 1;

FIG. 4 is a second exploded view of the valve assembly of FIG. 1;

FIG. 5 is a schematic illustration of a mechanical valve of the valve assembly of FIG. 1;

FIG. 6 is a schematic diagram of the structure of an electrically controlled valve of the valve assembly of FIG. 1;

FIG. 7 is a schematic view of the valve seat of the valve assembly of FIG. 1;

fig. 8 is a schematic view of a valve assembly according to another embodiment of the first aspect of the present invention;

FIG. 9 is an exploded view of the valve assembly of FIG. 8;

fig. 10 is a schematic view of a valve assembly according to another embodiment of the first aspect of the present invention;

FIG. 11 is an exploded view of the valve assembly of FIG. 10;

fig. 12 is a schematic structural view illustrating that the first flange is embedded in the mounting groove in some embodiments of the first aspect of the present invention.

The reference numbers are as follows:

the valve seat 100, the air distribution pipe 110, the reinforcing rib 111, the first mounting part 120, the mounting groove 121, the rib plate 122, the second mounting part 130, the convex surface 131, the jack 132, the connecting pipe 140, the plug 150, the support leg 160, the bottom plate 161 and the through hole 162;

the valve 200, the mechanical valve 201, the electric control valve 202, the first flange 210, the air inlet hole 211, the second flange 220, the vent hole 221, the concave surface 222 and the inserting part 223.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The gas stove is a stove which is heated by direct fire with gas fuels such as liquefied petroleum gas, artificial gas, natural gas and the like, is convenient to use, is deeply popular with people, especially with Chinese food which is vigorously fried by big fire, and has a wide application range. One type of gas stove is provided with a plurality of burners, and supplies gas through a gas pipe, generally adopts a steel gas pipe welding flange piece as a valve seat, so as to install the valves of the plurality of burners, the flange of the valve and the flange piece of the valve seat are in surface contact, and are fixed by screws, only depend on the stress of the screws, when the gas stove is used for a long time or is collided, the screws can be loosened, even gas leakage is caused, potential safety hazards exist, and the use is influenced.

Therefore, referring to fig. 1 to 7, a first aspect of the present invention provides a valve assembly for a gas stove, which improves a connection structure of a valve and effectively eliminates a problem of valve loosening.

The valve assembly comprises a valve seat 100 and a valve 200, wherein the valve seat 100 is provided with a gas distribution pipe 110, and it should be understood that the gas distribution pipe 110 can be a single pipe or a gas supply channel processed on the valve seat 100, so as to achieve the purpose of supplying gas; the number of the valves 200 may be one or more, and is selected according to actual requirements. The outer wall of the gas distribution pipe 110 is provided with at least one first mounting part 120, the valve 200 includes a first flange 210, wherein the first mounting part 120 is provided with a mounting groove 121 for embedding the first flange 210, the shape of the mounting groove 121 matches the shape of the first flange 210, where matching refers to that the first flange 210 is embedded in the mounting groove 121 and can be limited, and substantially eliminate shaking, and may be that the shape of the mounting groove 121 is consistent with the shape of the first flange 210, the side wall of the mounting groove 121 wraps the first flange 210, or may be that a part of the side wall of the mounting groove 121 abuts against the first flange 210, for example, along the circumferential direction of the first flange 210, three or more side walls abut against the first flange 210, or may limit the first flange 210, or a part of the side wall of the mounting groove 121 is convex, and the first flange 210 has a groove, the convex side wall cooperates with the groove to limit the first flange 210, and other structural forms are not listed, as long as the purpose of substantially eliminating sloshing of the first flange 210 is achieved.

It can be understood that, referring to fig. 5 and 7, the first flange 210 is substantially diamond-shaped in shape, the mounting groove 121 is also configured as a matching diamond, here, the mounting groove 121 may be a complete diamond or a part of a diamond, for example, both ends of the mounting groove 121 are tips of the diamond, which not only can play a role of defining the first flange 210, but also can reduce the processing difficulty of the mounting groove 121, as shown in fig. 12, the first flange 210 is embedded into the mounting groove 121, the first flange 210 is defined by using the diamond-shaped side walls at both ends of the mounting groove 121, after the fastening member is assembled, the first flange 210 and the valve 200 can be prevented from shaking, and the reliability of use is improved. Of course, the first flange 210 may also take other shapes to achieve the purpose of eliminating the sloshing.

In addition, the first flange 210 and the first mounting portion 120 are fixedly connected through a fastener, the most common fastener is a bolt, a through hole can be formed in the first mounting portion 120, a threaded hole is formed in the first flange 210, the bolt penetrates through the through hole of the first mounting portion 120 and is screwed into the threaded hole of the first flange 210, and the fixed connection is achieved. Or the fastener adopts a rivet or a pin, and the first flange 210 is fixed on the first mounting part 120 by the rivet or the pin, so that the purpose of fixed connection can be achieved.

It should be understood that the valve 200 is communicated with the gas distribution pipe 110 for gas to flow through, an air inlet hole 211 is generally formed in the middle of the first flange 210, a hole is drilled at a corresponding position on the first mounting portion 120 according to the position of the air inlet hole 211 to communicate with the gas distribution pipe 110, and a sealing ring is disposed between the first flange 210 and the first mounting portion 120 to prevent gas from leaking out, thereby improving safety. Correspondingly, two fasteners are adopted and distributed on two sides of the vent hole 221, so that connection is firmer and stress is more balanced.

Adopt the valve assembly of above-mentioned structure, when the equipment, first flange 210 of earlier valve 200 imbeds the mounting groove 121 of first installation department 120, reuse first flange 210 of fastener fixed connection and first installation department 120, realize that valve 200 is fixed in the first installation department 120 of disk seat 100, because the shape of mounting groove 121 matches with the shape of first flange 210, the lateral wall of mounting groove 121 can butt first flange 210, thereby prescribe a limit to first flange 210, play the effect that the restriction was rocked, long-time use or when bumping, the problem that the screw pine takes off and causes gas leakage has been eliminated, eliminate the potential safety hazard, improve structure steadiness and use reliability.

It is understood that the first flange 210 may also be used to wrap the first mounting portion 120, but the valve 200 is usually a purchased or standard component, so that the valve seat 100 can be designed conveniently without changing the structure of the valve 200.

It will be appreciated that a plurality of first mounting portions 120 may be provided on the valve seat 100, and typically three first mounting portions 120 are provided, with the three first mounting portions 120 being spaced apart along the axial direction of the air distribution pipe 110. As shown in fig. 1, the valve assembly employs two valves 200, the two valves 200 are a mechanical valve 201 and an electric control valve 202, and two first installation parts 120 can be selected to install the mechanical valve 201 and the electric control valve 202 according to actual use positions. As shown in fig. 8, the valve assembly employs three valves 200, each of the three valves 200 is a mechanical valve 201, and the three mechanical valves 201 are mounted to the three first mounting portions 120, respectively. As shown in fig. 10, the valve assembly employs two valves 200, and both of the two valves 200 are mechanical valves 201, and the two mechanical valves 201 can be respectively mounted on one first mounting portion 120 according to actual use positions.

It should be understood that, the communication between the valve 200 and the gas distribution pipe 110 requires to open a hole on the gas distribution pipe 110, and the valve seat 100 does not open a hole in advance, and after the position of the opening is determined according to the actual use requirement, drilling is performed, so that redundant holes are avoided, the risk of gas leakage is reduced, the universality of the valve seat 100 is improved, and the valve seat 100 can be applied to gas stoves with various specifications, so that the mold opening cost is reduced, and the cost is reduced.

Of course, a corresponding plug can be arranged to plug the opening on the gas distribution pipe 110, and the valve seat 100 with the same opening structure can be applied to gas stoves with various specifications, so that the mold opening cost is reduced, and the cost is reduced.

It can be understood that the valve 200 includes a mechanical valve 201 and an electronic control valve 202, the mechanical valve 201 is manually adjusted, the electronic control valve 202 is electronically adjusted, and the valve is applied to different types of gas cookers, the mounting structures of the mechanical valve 201 and the electronic control valve 202 may be the same or different, for example, the mechanical valve 201 includes a first flange 210, the electronic control valve 202 includes a second flange 220, a second mounting portion 130 is further disposed on the outer wall of the gas distribution pipe 110, the second mounting portion 130 is mounted in cooperation with the second flange 220, the second flange 220 is also fixedly connected to the second mounting portion 130 through a fastener, the most commonly used fastener is a bolt, a through hole may be disposed on the second mounting portion 130, a threaded hole is disposed on the second flange 220, the bolt passes through the through hole of the second mounting portion 130 and is screwed to the threaded hole of the second flange 220, so as to achieve fixed connection. Or the fastener adopts a rivet or a pin, and the second flange 220 is fixed on the second mounting part 130 by the rivet or the pin, so that the purpose of fixed connection can be achieved. The number and distribution positions of the second mounting portions 130 are determined according to the number of the electrically controlled valves 202.

It should be understood that the electric control valve 202 is communicated with the gas distribution pipe 110 for gas to flow through, a vent hole 221 is generally formed in the middle of the second flange 220, a hole is drilled in the second mounting portion 130 at a corresponding position according to the position of the vent hole 221 to communicate with the gas distribution pipe 110, and a sealing ring is disposed between the second flange 220 and the second mounting portion 130 to prevent gas from leaking out, thereby improving safety. Correspondingly, two fasteners are adopted and distributed on two sides of the vent hole 221, so that connection is firmer and stress is more balanced.

It can be understood that, referring to fig. 6 and 7, the second mounting portion 130 is provided with a convex surface 131, the second flange 220 is provided with a concave surface 222, the shape of the convex surface 131 matches that of the concave surface 222, during the assembly process, the convex surface 131 abuts against the concave surface 222, so as to achieve accurate positioning, and then the fasteners are assembled, so as to achieve the fixed connection between the electronic control valve 202 and the second mounting portion 130. The convex surface 131 is tightly attached to the concave surface 222, so that the second flange 220 and the electronic control valve 202 can be prevented from shaking, and the use reliability is improved. In addition, the shape matching of the convex surface 131 and the concave surface 222 means that at least a part of the convex surface 131 and the concave surface 222 can be attached to each other, and after the fastener is locked, the convex surface 131 and the concave surface 222 can be prevented from shaking, for example, the convex surface 131 and the concave surface 222 adopt attached arc surfaces or curved surfaces with other shapes, and after the fastener is assembled, the concave surface 222 can be limited by the convex surface 131, and the second flange 220 is prevented from shaking.

It can be understood that, referring to fig. 6 and 7, the middle of the concave surface 222 is provided with the insertion portion 223, the convex surface 131 is provided with the insertion hole 132 matched with the insertion portion 223, and when the insertion portion 223 is inserted into the insertion hole 132 during assembly, the insertion portion 223 and the insertion hole 132 are matched and positioned, so that the stability is improved. The plug portion 223 may be provided in the same shape as the insertion hole 132, and the plug portion 223 cooperates with the insertion hole 132 to help prevent the second flange 220 from shaking. The insertion hole 132 is a circular hole, and the insertion portion 223 is preferably cylindrical and can be tightly fitted and relatively rotated, which is beneficial to aligning and fitting the convex surface 131 and the concave surface 222 and assembling the fastener. In addition, the middle part of the insertion part 223 is provided with a vent hole 221, the insertion hole 132 penetrates through the gas distribution pipe 110, the gas is conveyed, and a sealing ring can be sleeved on the insertion part 223 to prevent gas leakage.

It can be understood that the first mounting portion 120 may be provided with one mounting groove 121, or may be provided with a plurality of mounting grooves 121, and considering that the positions of the valves 200 in different gas cookers are different or the mounting deviation is taken into consideration, the plurality of mounting grooves 121 are provided on the first mounting portion 120, which can satisfy various use conditions, improve the universality and reduce the manufacturing cost. Since the valve 200 must communicate with the distribution pipe 110 to achieve ventilation, a plurality of installation grooves 121 are distributed along the axial direction of the distribution pipe 110. In addition, the air distribution pipe 110 may be provided with a plurality of first installation parts 120, the number of the installation grooves 121 of each first installation part 120 may be systematic or different, as shown in fig. 7, the valve seat 100 has three first installation parts 120, the first installation parts 120 located at both ends of the air distribution pipe 110 are provided with four installation grooves 121, which is convenient for adjusting the position of the valve 200, and the first installation part 120 located in the middle of the air distribution pipe 110 is provided with one installation groove 121.

It can be understood that the first installation part 120 is provided with the plurality of installation grooves 121, and considering that each valve 200 only needs one installation groove 121, two adjacent installation grooves 121 are communicated and closely arranged, so that the occupied space is reduced, the volume of the first installation part 120 can be reduced, the manufacturing cost is reduced, and the position of the fine adjustment valve 200 is facilitated, and the accuracy is improved.

It can be understood that the valve seat 100 is an integrally formed casting, such as an aluminum alloy material of the valve seat 100, and has the advantages of high strength and light specific gravity, the valve seat 100 adopts a die casting process, and the integrally formed gas distribution pipe 110, the first mounting portion 120 and the second mounting portion 130 have higher shape precision and size precision compared with a structure that a steel gas pipe is welded with a flange plate, so that the problem of position deviation of the welded flange plate is eliminated, and the assembly operation is facilitated.

It is understood that, as shown in fig. 7, the valve seat 100 has a connection pipe 140 connected to the gas distribution pipe 110 for connecting a gas pipeline, the connection pipe 140 and the gas distribution pipe 110 are generally intersected, and the gas distribution pipe 110 can be manufactured by deep drilling, as shown in fig. 3 and 4, a plug 150 is provided at the brightness of the gas distribution pipe 110 for preventing gas leakage, and the connection pipe 140 is also deep drilled to penetrate the gas distribution pipe 110.

It can be understood that, referring to fig. 4 and 7, the annular rib 122 is disposed on the periphery of the first mounting portion 120, the structural strength of the first mounting portion 120 is increased by the rib 122, which is beneficial to reducing deformation and supporting the valve 200, and the rib 122 forms part of the side wall of the mounting groove 121, which is convenient for manufacturing and improves the supporting stability of the first flange 210. The rib plates 122 extend to the air distribution pipe 110, so that the strength of the connection structure of the air distribution pipe 110 and the first installation part 120 is improved, the force is favorably shared, and the durability is improved. Similarly, the annular rib plates 122 are also arranged on the periphery of the second mounting portion 130, and the structural strength of the second mounting portion 130 is increased by the rib plates 122, so that the deformation is reduced, the valve 200 is supported, and the support stability of the second flange 220 is improved. The rib plates 122 extend to the air distribution pipe 110, so that the strength of the connection structure between the air distribution pipe 110 and the second installation part 130 is improved, the force is favorably shared, and the durability is improved.

It can be understood that, referring to fig. 4 and 7, a reinforcing rib 111 is integrally formed on the outer wall of the air distribution pipe 110, and the reinforcing rib 111 includes a plurality of axial ribs and a plurality of circumferential ribs which intersect each other, the axial ribs being arranged along the axial direction of the air distribution pipe 110, and the circumferential ribs being arranged along the circumferential direction of the air distribution pipe 110. Through being provided with the strengthening rib 111 of grid form, increase the structural strength of distribution pipe 110, strengthening rib 111 is connected and integrated into one piece with floor 122 moreover for distribution pipe 110 is connected for inseparabler, more firm whole with first installation department 120, second installation department 130, promotes structural strength and rigidity, improves the durability.

It can be understood that, referring to fig. 4 and 7, the valve seat 100 is provided with a support leg 160, the support leg 160 is used for installing the valve seat 100 in the gas stove, one end of the support leg 160 is connected with the gas distribution pipe 110, the other end of the support leg 160 is provided with a bottom plate 161, the bottom plate 161 is provided with a through hole 162, and the valve seat can be installed in the gas stove by penetrating a bolt in the through hole 162. In consideration of the requirement of force balance and stable support, two legs 160 are adopted, the two legs 160 are distributed at the two ends of the air distribution pipe 110, and the two legs 160 and the three first mounting portions 120 are arranged in a staggered manner, so that the legs 160 are prevented from obstructing the assembly of the valve 200. The support leg 160 may be integrally formed with the valve seat 100 or may be a separate component that is secured to the support leg 160 by welding or fasteners to support the valve assembly.

The embodiment of the second aspect of the present invention provides a gas stove, the gas stove includes a valve assembly, the valve assembly includes a valve seat 100 and a valve 200, the valve seat 100 has a gas distribution pipe 110, it should be understood that the gas distribution pipe 110 may be an independent pipe, or a gas supply channel processed on the valve seat 100, and the purpose of gas supply can be achieved; the number of the valves 200 may be one or more, and is selected according to actual requirements. The outer wall of the gas distribution pipe 110 is provided with a first mounting part 120, the valve 200 is provided with a first flange 210, wherein the first mounting part 120 is provided with a mounting groove 121 for embedding the first flange 210, the shape of the mounting groove 121 matches the shape of the first flange 210, where the shape matching means that the first flange 210 can be fixed by being embedded in the mounting groove 121, and substantially eliminates shaking, the shape of the mounting groove 121 may be the same as the shape of the first flange 210, the side wall of the mounting groove 121 wraps the first flange 210, or a part of the side wall of the mounting groove 121 abuts against the first flange 210, for example, along the circumferential direction of the first flange 210, three or more side walls abut against the first flange 210, and can also limit the first flange 210, or a part of the side wall of the mounting groove 121 is convex, while the first flange 210 has a groove, the convex side wall cooperates with the groove to limit the first flange 210, as long as it can limit the first flange 210, the shaking can be basically eliminated.

In addition, the first flange 210 and the first mounting portion 120 are fixedly connected by fasteners, and the most common fasteners are bolts.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art.

Claims

1. A valve assembly, comprising:

the valve seat is provided with a gas distribution pipe, and the outer wall of the gas distribution pipe is provided with at least one first mounting part;

a valve coupled to the valve seat, the valve including a first flange;

the first installation part is provided with an installation groove used for embedding the first flange, the shape of the installation groove is matched with that of the first flange, and the first flange is fixedly connected with the first installation part through a fastening piece.

2. A valve assembly according to claim 1, wherein the valve seat is provided with a plurality of said first mounting portions, the plurality of said first mounting portions being spaced apart in the axial direction of the gas distribution pipe.

3. The valve assembly according to claim 2, wherein the valve comprises a mechanical valve and an electric control valve, the mechanical valve comprises the first flange, the electric control valve comprises a second flange, the outer wall of the gas distribution pipe is further provided with a second mounting part, and the second flange is fixedly connected with the second mounting part through a fastener.

4. A valve assembly according to claim 3, wherein the second mounting portion is provided with a convex surface and the second flange is provided with a concave surface, the convex surface abutting and being form-fit with the concave surface.

5. A valve assembly according to claim 4, wherein the concave surface is provided with a plug portion and the convex surface is provided with a socket for engaging the plug portion.

6. The valve assembly of claim 1, wherein the first mounting portion is provided with a plurality of mounting grooves distributed along an axial direction of the gas distribution pipe.

7. A valve assembly according to claim 6, wherein adjacent mounting slots are in communication.

8. A valve assembly according to any one of claims 1 to 7, wherein the valve seat is an integrally formed casting.

9. A valve assembly according to claim 8, wherein the periphery of the first mounting portion is provided with an annular rib which forms part of the side wall of the mounting groove.

10. The valve assembly of claim 8, wherein the outer wall of the gas distribution pipe is integrally formed with a reinforcing rib, the reinforcing rib comprising a plurality of intersecting axial ribs and a plurality of circumferential ribs, the axial ribs being arranged along the axial direction of the gas distribution pipe, and the circumferential ribs being arranged along the circumferential direction of the gas distribution pipe.

11. A valve assembly according to claim 8, wherein the valve seat is provided with a leg, one end of the leg being connected to the gas distribution pipe, the other end of the leg being provided with a base plate provided with a through hole for mounting.

12. Gas burner comprising a valve assembly according to any one of claims 1 to 11.