WO2020047936A1

WO2020047936A1 - Burner and gas cooker

Info

Publication number: WO2020047936A1
Application number: PCT/CN2018/109356
Authority: WO
Inventors: 林梦; 施国生; 孙明雪
Original assignee: 佛山市顺德区美的洗涤电器制造有限公司
Priority date: 2018-09-04
Filing date: 2018-10-08
Publication date: 2020-03-12

Abstract

Disclosed are a burner (200) and a gas cooker, wherein a flamer (230) is provided on a bottom cup (210); a nozzle holder (220) is installed at a side edge of the bottom cup (210); a first nozzle is installed at a gas outlet of a first gas intake channel (221), and a gas outlet of a second gas intake channel (222) is connected to an inner ring gas intake pipe (270); a second nozzle is installed at a gas outlet of the inner ring gas intake pipe (270); the material of the inner ring gas intake pipe (270) is different from that of the bottom cup (210); an outer ring cavity (233) surrounds an inner ring cavity (234); the bottom cup (210) is provided with a first injection channel (201), and the first nozzle is opposite to the first injection channel (201); mixed gas of an outer gas mixing cavity (2331) is supplied by the first injection channel (201); the inner ring cavity (234) is provided with an inner gas mixing cavity (2341) and a second injection channel (2340), and the second injection channel (2340) is opposite to the second nozzle; and mixed gas of the inner gas mixing cavity (2341) is supplied by the second injection channel (2340). The manufacturing process of the burner is simple, and the airtightness of the gas intake pipe is improved.

Description

Burner and gas cooker

Priority information

This application requests the priority and rights of the patent application filed with the State Intellectual Property Office of China on September 4, 2018, with a patent application number of 2018110275013, and the patent application number of 2018214477838, which was filed with the Chinese State Intellectual Property Office on September 4, 2018 , And incorporated by reference in its entirety.

Technical field

The present application relates to the technical field of cooking appliances, and in particular, to a burner and a gas cooker.

Background technique

The intake pipe in the burner in the related art for supplying air to the inner ring cavity is manufactured by a core-pulling process. However, the processing steps for preparing the intake pipe by the core-pulling process are complicated, and the intake pipe is prone to defects during processing, which may lead to poor sealing performance of the intake pipe and then affect the normal gas supply of the burner.

Summary of the Invention

The application provides a burner and a gas cooker.

The burner according to the embodiment of the present application includes a bottom cup, a flame sprayer, and a nozzle holder. The flame sprayer is disposed on the bottom cup. The nozzle holder is installed on the side of the bottom cup. An air inlet channel and a second air inlet channel, a first nozzle is installed at an air outlet of the first air inlet channel, and an inner ring air inlet pipe is connected to the air outlet of the second air inlet channel; A second nozzle is installed at the air outlet of the valve. The material of the inner ring intake pipe is different from that of the bottom cup. The flamethrower includes an outer ring cavity and an inner ring cavity. The outer ring cavity surrounds the An inner ring cavity, the bottom cup is provided with a first ejection channel, the first nozzle is opposite to the first ejection channel, and the outer ring cavity is provided with an outer gas mixing cavity, and the outer gas is mixed The mixed gas in the cavity is supplied by the first injection channel. The inner ring cavity is provided with an internal gas mixing cavity and a second injection channel. The second injection channel is opposite to the second nozzle. The mixed gas in the inner gas mixing chamber is supplied from the second injection channel.

In the above burner, the inner ring intake pipe is connected to the air outlet of the second intake channel and the second nozzle. The inner ring intake pipe can be manufactured separately and processed with the bottom cup to make a burner, so that the inner ring intake pipe is not prone to defects. And can have better sealing performance, which can ensure the normal gas supply of the burner, and can simplify the processing process of the burner.

In some embodiments, the material of the inner ring air inlet pipe is a stainless steel pipe.

In some embodiments, the bottom cup includes a bottom cup lid and a bottom cup holder. The bottom cup lid includes a top wall and a first mounting wall. The top wall is provided with an air outlet. A mounting wall is convexly arranged on the top wall, the flamethrower is mounted on the top wall, the air outlet is connected to the external gas mixing cavity and the first ejection channel, and the bottom cup cover is mounted on The bottom cup holder includes a bottom wall and a second mounting wall, the second mounting wall is convexly disposed on the bottom wall, the top wall is opposite to the bottom wall, and the bottom The wall and the second mounting wall together form a mounting groove, and the first mounting wall is at least partially embedded in the mounting groove and at least partially overlaps and engages with the second mounting wall.

In some embodiments, the bottom cup cover body includes a first channel portion, the first channel portion is convexly disposed on the top wall, the first mounting wall surrounds the first channel, and the first The channel portion is provided with a first groove, and the bottom cup base includes a second channel portion, the second channel portion is located at the bottom of the mounting groove, and the first channel portion and the second channel portion are connected, The second mounting wall surrounds a second channel portion, and the second channel portion is provided with a second groove. The first groove and the second groove together form the first ejection channel.

In some embodiments, the bottom cup lid body is formed with a first joint surface, the bottom wall is opposite to the first joint surface, the top surface of the bottom wall is formed with a second joint surface, and the second mounting surface A wall surrounds the second joint surface, the first joint surface and the second joint surface are joined, and at least one of the first joint surface and the second joint surface is processed by a finishing process.

In some embodiments, an end surface of the first mounting wall is in contact with a top surface of the bottom wall.

In some embodiments, a contact between an end surface of the first mounting wall and a top surface of the bottom wall is processed by a finishing process.

In some embodiments, a first connection channel is provided in the bottom cup, and the connection channel connects the air outlet end of the first injection channel and the air outlet.

In some embodiments, the connection channel is tapered along the direction of air flow.

In some embodiments, the connection channel includes a first connection channel and a second connection channel, and the first connection channel and the second connection channel are respectively connected to both sides of an air outlet end of the first ejection channel. The first connection channel is arc-shaped connected to the air outlet end of the first ejection channel, and the second connection channel is arc-shaped connected to the air outlet end of the first ejection channel.

In some embodiments, the bottom cup includes a primary air cavity protruding from a side of at least one of the bottom cup lid body and the bottom cup base, the primary air cavity The air cavity is provided with a primary air cavity that communicates with the first ejection channel.

In some embodiments, the primary air cavity includes a first cavity portion and a second cavity portion, the first cavity portion protrudes from a side edge of the bottom cup lid, and the first A first matching groove is formed in a cavity portion, the second cavity portion protrudes from a side wall of the bottom cup seat body, a second matching groove is formed in the second cavity portion, and the first cavity A part is connected to the second cavity partly, and the first matching groove and the second matching groove together form the primary air cavity.

In some embodiments, the first cavity portion includes a ring-shaped member and a first connecting wall, the ring-shaped member protrudes from a side edge of the bottom cup lid body, and the first connecting wall connects the ring-shaped member. Side of the piece, the annular member is located between the first connecting wall and the side of the bottom cup cover body, the first connecting wall surrounds the first mating groove, and the first connecting wall and The air inlets of the first ejection channels are opposite, the second cavity portion includes a second connection wall, the second connection wall is provided with a mounting port, and the second connection wall surrounds the second fitting A groove, the first connection wall is installed at the installation opening to cooperate with the second connection wall.

In some embodiments, a planar shape of the ring member is an arc shape, and a planar shape of the second cavity portion is an arc shape.

In some embodiments, at least one of the bottom cup lid body and the bottom cup base body has a first center, the primary air cavity has a second center, and the first center and the second center Off-center setting.

In some embodiments, the planar shape of the bottom cup base is an arc shape, the first center is the center of the circle where the plane of the bottom cup base is, and the planar shape of the primary air cavity. It is arc-shaped, and the second center is the center of the circle where the plane of the primary air cavity is located.

In some embodiments, the flamethrower has a first center, the flamethrower is formed with an outer ring fire hole and an inner ring fire hole, the outer ring fire hole communicates with the outer gas mixing cavity, and the inner ring A fire hole communicates with the inner gas mixing cavity, the bottom cup has a second center, and the first center is eccentrically disposed with the second center.

In some embodiments, the root of the outer ring fire hole and / or the inner ring fire hole is arc-shaped.

In some embodiments, the nozzle holder includes a first air inlet pipe and a second air inlet pipe, the first air inlet pipe is provided with the first air inlet passage, and the second air inlet pipe is provided with the second air inlet pipe. Intake channel.

In some embodiments, the burner includes a fire cover, the fire cover includes an outer ring fire cover and an inner ring fire cover, the outer ring fire cover covers the outer ring cavity, and the inner ring fire cover The cover is provided with the inner ring cavity, the outer ring fire cover and the inner ring fire cover are spaced apart, and the middle part of the inner ring fire cover is a solid structure.

A gas cooker according to an embodiment of the present application includes the burner according to any one of the foregoing embodiments.

In the above gas cooker, the inner ring air inlet pipe is connected to the air outlet of the second air inlet channel and the second nozzle. The inner ring air inlet pipe can be manufactured separately and processed with the bottom cup to make a burner, so that the inner ring air pipe is not prone to defects. And can have better sealing performance, which can ensure the normal gas supply of the burner, and can simplify the processing process of the burner.

Additional aspects and advantages of the embodiments of the present application will be partially given in the following description, and part of them will become apparent from the following description, or be learned through practice of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

1 is a schematic perspective view of a burner according to an embodiment of the present application;

2 is a plan view of a burner according to an embodiment of the present application;

3 is an exploded schematic view of a burner according to an embodiment of the present application;

4 is a schematic cross-sectional view of a burner according to an embodiment of the present application;

5 is another schematic cross-sectional view of a burner according to an embodiment of the present application;

6 is a schematic perspective view of a bottom cup and a nozzle holder of a burner according to an embodiment of the present application;

7 is an exploded schematic view of a bottom cup and a nozzle holder of a burner according to an embodiment of the present application;

8 is a schematic perspective view of a bottom cup cover of a burner according to an embodiment of the present application;

9 is another perspective view of the bottom cup cover of the burner according to the embodiment of the present application;

FIG. 10 is another perspective view of the bottom cup cover of the burner according to the embodiment of the present application.

11 is a schematic perspective view of a bottom cup base of a burner according to an embodiment of the present application;

12 is another schematic perspective view of the bottom cup base of the burner according to the embodiment of the present application;

13 is a schematic perspective view of a burner of a burner according to an embodiment of the present application;

FIG. 14 is another schematic perspective view of a flame burner of the burner according to the embodiment of the present application.

Explanation of main component symbols:

Burner 200;

Bottom cup 210, first injection channel 201, connection channel 202, bottom cup cover 211, first joint surface 2110, first channel joint surface 21101, first connection joint surface 21102, top wall 2111, air outlet 2114, first A mounting wall 2112, a first channel portion 2113, a first groove 21131, a cover connection groove 2116, a bottom cup seat 212, a bottom wall 2121, a bottom wall connection groove 21211, a second joint surface 2210, and a second joint connection surface 22101, second channel joint surface 22102, third connection joint surface 22103, second mounting wall 2122, second channel portion 2123, primary air cavity 213, primary air cavity 2131, first cavity portion 2133, ring 2135, First connecting wall 2136, first mating groove 21331, second cavity portion 2134, second connecting wall 2137, mounting port 21371, second mating groove 21341,

The nozzle holder 220, the first intake passage 221, the second intake passage 222, the third intake pipe 223, the fourth intake pipe 224, the inner ring intake pipe 270, and the third nozzle 271;

Flame thrower 230, outer ring fire hole 2301, inner ring fire hole 2302, outer ring cavity 233, outer gas mixing cavity 2331, inner ring cavity 234, inner gas mixing cavity 2341;

The fire cover 240, the outer ring fire cover 241, and the inner ring fire cover 242.

detailed description

The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and should not be construed as limiting the present application.

In the description of this application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Rear "," left "," right "," vertical "," horizontal "," top "," bottom "," inside "," outside "," clockwise "," counterclockwise ", etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, structure and operation in a specific orientation, Therefore, it cannot be understood as a limitation on this application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality" is two or more, unless specifically defined otherwise.

In the description of this application, it should be noted that the terms "installation", "connected", and "connected" should be understood in a broad sense unless explicitly stated and limited otherwise. For example, they may be fixed connections or removable. Connected, or integrated. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

Please refer to FIGS. 1 to 14. The burner 200 according to the embodiment of the present application includes a bottom cup 210, a nozzle holder 220, a flame burner 230, and a fire cover 240. The nozzle holder 220 is mounted on a side of the bottom cup 210. The flamethrower 230 is disposed on the bottom cup 210. The burner 200 according to the embodiment of the present application can be applied to a gas cooker according to the embodiment of the present application.

With reference to FIG. 7, the bottom cup 210 includes a bottom cup lid body 211 and a bottom cup base 212. The bottom cup 210 is provided with a primary air cavity 213 (as shown in FIG. 1). The bottom cup lid body 211 is mounted on the bottom cup base body 212, for example, the bottom cup lid body 211 and the bottom cup base body 212 are riveted. In order to allow air to sufficiently enter the primary air cavity 213, the primary air cavity 213 is protruded from the side of at least one of the bottom cup lid body 11 and the bottom cup base body 12.

Referring to FIG. 5, a first ejection channel 201 having a Venturi effect is provided in the bottom cup 210. A connection channel 202 is opened in the bottom cup 210 (as shown in FIG. 5). The connection channel 202 has a guiding effect on the gas. In order to ensure the flow velocity of the airflow flowing out of the connection channel 202, the connection channel 202 may be gradually changed along the flow direction of the airflow. It can be understood that, in order to reduce the resistance of the air flow, the connection channel 202 can be arc-connected with the air outlet end of the first ejection channel 201. It should be noted that the connection channel 202 and the first ejection channel 201 may together constitute a mixed gas channel of gas and air of the bottom cup 210.

The connection channel 202 of this embodiment includes a first connection channel 2021 and a second connection channel 2022 (as shown in FIG. 4). The first connection channel 2021 and the second connection channel 2022 are respectively connected to both sides of the air outlet end of the first ejection channel 201. The first connection channel 2021 and the second connection channel 2022 are both arc-shaped, which can reduce the resistance of airflow flowing in the first connection channel 2021 and the second connection channel 2022. In addition, a single first ejection channel 201 is opened in the bottom cup according to the embodiment of the present application.

With reference to FIG. 2, at least one of the bottom cup lid body 211 and the bottom cup base body 212 has a first center y (the dotted line m1 in FIG. 5 is the central axis where the first center y is located). The primary air cavity 213 has a second center x (the dotted line m2 in FIG. 5 is the central axis where the second center x is located). The first center y is offset from the second center x. Specifically, the planar shape of at least one of the bottom cup lid body 211 and the bottom cup base body 212 is regular, and the planar shape of the primary air cavity 213 is regular. For example, the planar shape of the bottom cup holder 212 is circular, the first center y is the center of the circle where the plane of the bottom cup holder 212 is located, the planar shape of the primary air cavity 213 is circular, and the second center x Is the center of the circle where the plane of the primary air cavity 213 is located. For another example, the planar shape of the bottom cup holder 212 is square, and the first center y is the intersection of the diagonals of the square where the plane of the bottom cup holder 212 is located. The planar shape of the primary air cavity 213 is square, and the second center x is the intersection of the diagonals of the square where the plane of the primary air cavity 213 is located. This can ensure that the air can fully enter the primary air cavity 213, so that the gas and air are mixed in the primary air cavity 213. Of course, it can be understood that the bottom cup lid body 211, the bottom cup base body 212, and the primary air cavity 213 may also have other regular shapes (such as an oval shape, etc.).

6-10, the bottom cup cover body 211 includes a top wall 2111 (shown in FIG. 6), a first mounting wall 2112 (shown in FIG. 8), and a first channel portion 2113 (shown in FIG. 10). The bottom cup lid body 211 is formed with a first joint surface 2110 (as shown in FIG. 10). The bottom cup lid body 211 is provided with a lid body connecting groove 2116 (as shown in FIG. 10). The cover connecting groove 2116 is located between the first channel portion 2113 and the first mounting wall 2112.

The top wall 2111 is provided with an air outlet 2114 (as shown in FIG. 9). The first ejection channel 201 communicates with the air outlet 2114. In this way, the mixture of gas and air ejected from the first ejection channel 201 can be supplied to the flamethrower 230 for combustion by the air outlet 2114.

The first mounting wall 2112 is protruded from the top wall 2111. The flamethrower 230 is mounted on the top wall 2111. The connection channel 202 connects the air outlet end and the air outlet 2114 of the first ejection channel 201. The first channel portion 2113 is protruded from the top wall 2111. The first mounting wall 2112 surrounds the first passage portion 2113.

Referring to FIG. 10, the first channel portion 2113 is provided with a first groove 21131 (as shown in FIG. 10). The first channel portion 2113 is formed with first channel engaging surfaces 21101 on both sides of the first groove 21131. The first channel portion 2113 is formed with a first connection joint surface 21102. End surfaces of the first channel joint surface 21101, the first connection joint surface 21102, and the first mounting wall 2112 are coplanar. The first joint surface 2110 includes a first channel joint surface 21101 and a first connection joint surface 21102.

11-12, the bottom cup base 212 includes a bottom wall 2121 (as shown in FIG. 11), a second mounting wall 2122 (as shown in FIG. 11), and a second channel portion 2123 (as shown in FIG. 11). An end surface of the first mounting wall 2112 is in contact with a top surface of the bottom wall 2121. The second mounting wall 2122 is protruded from the bottom wall 2121. The top wall 2111 and the bottom wall 2121 are opposed. The bottom wall 2121 is opposed to the first joint surface 2110. The bottom cup base 212 is formed with a mounting groove 2124 (as shown in FIG. 11). Specifically, the bottom wall 2121 and the second mounting wall 2122 form a mounting groove 2124 together. The first mounting wall 2112 is at least partially embedded in the mounting groove 2124 and at least partially overlaps with the second mounting wall 2122. That is, the bottom cup cover body 211 is mounted on the bottom cup seat body 212 and partially located in the mounting groove 2124. In the embodiment of the present application, the first mounting wall 2112 is closer to the center y of the bottom cup 10 than the second mounting wall 122.

Specifically, the first mounting wall 2112 and the second mounting wall 2122 are overlapped and joined to each other along the inside of the burner 200, that is, overlapped and joined in the horizontal direction. In this way, during the heating or cooling process of the burner 200, the connection between the first mounting wall 2112 and the second mounting wall 2122 can be expanded and contracted to further ensure better sealing performance, so that the bottom cup lid body 211 is mounted on The bottom cup base 212 has better sealing performance. The bottom cup 210 is unlikely to leak air. Hidden security risks. In one example, the bottom cup 210 may be made of cast aluminum.

Referring to FIG. 11, the bottom wall 2121 is provided with a bottom wall connecting groove 21211. The cover connecting groove 2116 and the bottom wall connecting groove 21211 together form a connecting channel 202. A second joint surface 2210 is formed on the top surface of the bottom wall 2121 (as shown in FIG. 11). The second mounting wall 2122 surrounds the second joint surface 2210. The first joint surface 2110 and the second joint surface 2210 are joined. At least one of the first joint surface 2110 and the second joint surface 2210 is processed by a finishing process. In this way, the sealing effect is better. At least one of the first joint surface 2110 and the second joint surface 2210 is processed by a finishing process. In this way, the sealing effect is better. The second joint surface 2210 includes a second connection joint surface 22101 (as shown in FIG. 11), a second channel joint surface 22102 (as shown in FIG. 11), and a third connection joint surface 22103 (as shown in FIG. 11). An end surface of the first mounting wall 2112 is joined to the second connection joint surface 22101.

In order to improve the sealing effect, the end surface of the first mounting wall 2112 is in contact with the top surface of the bottom wall 2121. It should be noted that the contact between the end surface of the first mounting wall 2112 and the top surface of the bottom wall 2121 may be processed by a precision turning process. That is, the end surface of the first mounting wall 2112 may be processed by a precision turning process, or the portion of the top surface of the bottom wall 2121 that is in contact with the first mounting wall 2112 may be processed by a precision turning process, or Both the end surface and the top surface of the bottom wall 2121 that is in contact with the first mounting wall 2112 are processed by a precision turning process.

With reference to FIGS. 7 and 11, the second channel portion 2123 is located at the bottom of the mounting groove 2124. The first channel portion 2113 and the second channel portion 2123 are connected. The second mounting wall 2122 surrounds the second passage portion 2123. The second channel portion 2123 is provided with a second groove 21231 (as shown in FIG. 11). The first groove 21131 and the second groove 21231 together form a first ejection channel 201. This facilitates processing and molding of the first injection channel 101. The second channel portion 2123 forms second channel engaging surfaces 22102 on both sides of the second groove 21231. The first channel joint surface 21101 and the second channel joint surface 22102 are joined. At least one of the first channel joint surface 21101 and the second channel joint surface 22102 is processed by a finishing process. The second channel portion 2123 forms a third connection joint surface 22103. The first connection joint surface 21102 and the third connection joint surface 22103 are joined. The second connection joint surface 22101 and the third connection joint surface 22103 surround the bottom wall connection groove 21211. The second connection joint surface 22101, the second channel joint surface 22102, and the third connection joint surface 22103 are coplanar.

6 and 8-11, the primary air cavity 213 is provided with a primary air cavity 2131 (as shown in FIG. 6) communicating with the first ejection channel 201. The primary air cavity 213 includes a first cavity portion 2133 and a second cavity portion 2134 (as shown in FIG. 7). The first cavity portion 2133 protrudes from the side of the bottom cup lid body 211. The first cavity portion 2133 is formed with a first fitting groove 21331 (as shown in FIG. 8). The second cavity portion 2134 protrudes from a side wall of the bottom cup base 212. The second cavity portion 2134 is formed with a second fitting groove 21341 (as shown in FIG. 11). The first mating groove 21331 and the second mating groove 21341 together form a primary air cavity 2131.

With reference to FIG. 8, the first cavity portion 2133 includes a ring 2135 and a first connection wall 2136 (as shown in FIG. 8). The ring member 2135 protrudes from the side of the bottom cup cover body 211. The first connecting wall 2136 connects the sides of the ring 2135. The ring member 2135 is located between the first connection wall and the side of the bottom cup lid body 211. The first connection wall 2136 surrounds the first fitting groove 21331. The first connection wall 2136 is opposite to the air inlet of the first ejection channel 201. The ring member 2135 has an opening communicating with the first fitting groove 21331.

With reference to FIG. 11, the second cavity portion 2134 includes a second connection wall 2137. The second connecting wall 2137 is provided with a mounting port 21371 (as shown in FIG. 11). The second connection wall 2137 surrounds the second fitting groove 21341. The mounting opening 21371 communicates with the second fitting groove 21341. The first connection wall 2136 is installed at the installation port 21371 to be mated with the second connection wall 2137. The planar shape of the ring member 2135 is an arc shape, and the planar shape of the second cavity portion 2134 is an arc shape.

3 and 5, the nozzle holder 220 is provided with a first air inlet passage 221 (as shown in FIG. 3) and a second air inlet passage 222 (as shown in FIG. 5). A second nozzle (not shown) is installed at the air outlet of the first intake passage 221. The second nozzle is opposed to the first ejection channel 201. An air inlet of the second intake passage 222 is connected to an inner ring intake pipe 270 (as shown in FIG. 3). A third nozzle 271 is installed at the air outlet of the inner ring air inlet pipe 270 (as shown in FIG. 3). The material of the inner ring intake pipe 270 is different from that of the bottom cup 210. In this way, the inner ring intake pipe 270 is connected to the air outlet of the second intake passage 26 and the third nozzle 271, and the inner ring intake pipe 270 can be manufactured separately and processed with the bottom cup 210 to form a burner 200. In this way, the inner ring intake pipe 270 Defects are not easy to occur, and can have better sealing performance, which can ensure the normal gas supply of the burner, and can simplify the processing process of the burner. It is not necessary to use core-pulling process, which can reduce processing steps, and the inner ring air inlet pipe 270 is less prone to defects, and can have better sealing performance. The material of the inner ring air inlet pipe 270 may be a stainless steel pipe.

It should be particularly noted that, in the above embodiment, the second nozzle represents the first nozzle in the claims, and the third nozzle 271 represents the second nozzle in the claims.

It should be noted that the inner ring air inlet pipe 270 can be casted with the bottom cup 210. The nozzle holder 220 is mounted on the first connection wall 2136. The nozzle holder 220 includes a third intake pipe 223 and a fourth intake pipe 224. The third intake pipe 223 is provided with a first intake passage 221. The fourth intake pipe 224 is provided with a second intake passage 222. One end of the inner ring air intake pipe 270 is fixed to the fourth air intake pipe 224, and the other end thereof is fixedly connected to the first connection wall 2136, the ring member 2135, the bottom cup cover 211, and the third nozzle 271.

5 and 13-14, the flamethrower 230 is installed on the top wall 2111. The flamethrower 230 is formed with an outer ring fire hole 2301 (as shown in FIG. 13) and an inner ring fire hole 2302 (as shown in FIG. 13). In order to increase the area of the fire hole and improve the ejection ability of the fire hole, the roots of the outer ring fire hole 2301 and / or the inner ring fire hole 2302 can be arc-shaped, such as a circular arc, which is also convenient for processing.

With reference to FIG. 13, the flamethrower 230 includes an outer ring cavity 233 and an inner ring cavity 234. The outer ring cavity 233 surrounds the inner ring cavity 234 at intervals. The outer ring cavity 233 is provided with an outer gas mixing cavity 2331. The outer ring fire hole 2301 communicates with the outer gas mixing cavity 2331. The air outlet 2114 opened on the top wall 2111 is an outer ring air outlet. The air outlet 2114 communicates with the external gas mixing chamber 2331 and the first ejection channel 201. The inner ring cavity 234 is provided with an inner gas mixing cavity 2341. The inner ring fire hole 2302 communicates with the inner gas mixing cavity 2341. The mixed gas in the external gas mixing chamber 2331 is supplied from the first injection channel 201. The inner ring cavity 234 is provided with a second ejection channel 2340. The second ejection channel 2340 is opposite to the third nozzle 271 installed at the air outlet of the inner ring intake pipe 270. The mixed gas in the inner gas mixing chamber 2341 is supplied from the second injection channel 2340. In this way, the inner ring air inlet pipe 270 is connected to the air outlet of the second air inlet passage 222 and the second nozzle, and the inner ring air inlet pipe 270 does not need to be processed by a core-drawing process, which can reduce processing steps, and the inner ring air inlet pipe does not Defects are prone to occur and can have better sealing performance, which in turn can ensure the normal gas supply of the burner 200.

During the intake (the flow of the air is shown by the dashed arrows in FIG. 5), the gas can enter the first intake passage 221 and the second intake passage 222, respectively. Then, the gas in the first intake passage 221 is ejected from the second nozzle to the primary air cavity 2131. The air and the gas are mixed into a mixed gas in the primary air cavity 2131 and enter the ejection channel 201, and are respectively ejected to the connection channel 202 by the ejection channel 201. Then, the mixed gas coming out of the connecting channel 202 enters the external gas mixing chamber 2331 through the air outlet 2114 for combustion. At the same time, the gas in the second intake passage 222 passes through the inner ring intake pipe 270 and is ejected from the third nozzle 271, and is mixed with the air. The gas-air-mixed gas mixture enters the second injection channel 2340 and is injected by the second injection channel 2340 to the inner gas mixing chamber 2341 for combustion. That is, the inner ring cavity 234 is supplied separately, and the outer ring cavity 233 is supplied separately.

The fire cover 240 includes an outer ring fire cover 241 and an inner ring fire cover 242. The outer ring fire cover 241 covers an outer ring cavity 233. The inner ring fire cover 242 covers the inner ring cavity 234. The outer ring fire cover 241 and the inner ring fire cover 242 are spaced apart. The inner part of the inner ring fire cover 242 is a solid structure.

In this application, unless explicitly stated and limited otherwise, the "first" or "under" of the second feature may include the first and second features in direct contact, and may also include the first and second features. Not directly, but through another characteristic contact between them. Moreover, the first feature is "above", "above", and "above" the second feature, including that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature is higher in level than the second feature. The first feature is “below”, “below”, and “below” of the second feature, including the fact that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature is less horizontal than the second feature.

The above disclosure provides many different implementations or examples for implementing different structures of the present application. In order to simplify the disclosure of this application, the components and settings of the specific examples are described above. Of course, they are merely examples and are not intended to limit the application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, examples of various specific processes and materials are provided in this application, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

In the description of this specification, the description with reference to the terms “one embodiment”, “some embodiments”, “exemplary embodiments”, “examples”, “specific examples”, or “some examples”, etc., means that the embodiments are combined The specific features, structures, materials, or characteristics described by the examples are included in at least one implementation or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same implementation or example. Moreover, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more implementations or examples.

Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, The scope of the application is defined by the claims and their equivalents.

Claims

A burner is characterized in that it comprises a bottom cup, a flame sprayer and a nozzle holder, the flame sprayer is arranged on the bottom cup, the nozzle holder is installed on the side of the bottom cup, and the nozzle holder is opened There are a first air inlet channel and a second air inlet channel. A first nozzle is installed at an air outlet of the first air inlet channel, and an inner ring air inlet pipe is connected to the air outlet of the second air inlet channel. A second nozzle is installed at the air outlet of the air intake pipe, and the material of the inner ring air intake pipe is different from that of the bottom cup;

The flamethrower includes an outer ring cavity and an inner ring cavity. The outer ring cavity surrounds the inner ring cavity. The bottom cup is provided with a first ejection channel, and the first nozzle and the first An ejection channel is opposite, the outer ring cavity is provided with an outer gas mixing cavity, the mixed gas of the outer gas mixing cavity is supplied by the first ejection channel, and the inner ring cavity is provided with an inner gas mixing cavity. And a second injection channel, the second injection channel is opposite to the second nozzle, and the mixed gas of the inner gas mixing chamber is supplied by the second injection channel.
The burner of claim 1, wherein the material of the inner ring intake pipe is a stainless steel pipe.
The burner of claim 1, wherein the bottom cup comprises:

Bottom cup lid body, the bottom cup lid body includes a top wall and a first mounting wall, the top wall is provided with an air outlet, the first mounting wall is protruded from the top wall, and the flamethrower is installed On the top wall, the air outlet communicates with the external gas mixing cavity and the first ejection channel;

A bottom cup base body, the bottom cup lid body being mounted on the bottom cup base body, the bottom cup base body comprising a bottom wall and a second mounting wall, the second mounting wall being convexly provided on the bottom wall, The top wall and the bottom wall are opposite to each other, and the bottom wall and the second mounting wall jointly form a mounting groove, and the first mounting wall is at least partially embedded in the mounting groove and is at least partially connected to the second mounting wall. Partially overlapping.
The burner according to claim 3, wherein the bottom cup cover body includes a first channel portion, the first channel portion is convexly disposed on the top wall, and the first mounting wall surrounds the first A channel, the first channel portion is provided with a first groove,

The bottom cup base includes a second channel portion, which is located at the bottom of the mounting groove, the first channel portion is connected to the second channel portion, and the second mounting wall surrounds the second A channel portion, the second channel portion is provided with a second groove, and the first groove and the second groove together form the first ejection channel.
The burner according to claim 3, wherein the bottom cup lid body is formed with a first joint surface, the bottom wall is opposite to the first joint surface, and the top surface of the bottom wall is formed with a second joint Surface, the second mounting wall surrounds the second joint surface, the first joint surface and the second joint surface are joined, and at least one of the first joint surface and the second joint surface is Turning process.
The burner according to claim 3, wherein an end surface of the first mounting wall is in contact with a top surface of the bottom wall.
The bottom cup of the burner according to claim 6, wherein the contact between the end surface of the first mounting wall and the top surface of the bottom wall is processed by a precision turning process.
The burner according to claim 3, wherein a connection channel is provided in the bottom cup, and the connection channel connects the air outlet end of the first ejection channel and the air outlet.
The combustor according to claim 8, wherein the connection passage gradually changes along the flow direction of the airflow.
The burner according to claim 9, wherein the connection channel comprises a first connection channel and a second connection channel, and the first connection channel and the second connection channel are respectively connected to the first pilot channel. On both sides of the outlet end of the injection channel, the first connection channel is arc-connected to the outlet end of the first ejection channel, and the second connection channel is arc-connected to the outlet end of the first ejection channel.
The burner according to claim 3, wherein the bottom cup comprises a primary air cavity, and the primary air cavity is protruded from at least one of the bottom cup lid body and the bottom cup base body. On the side, the primary air cavity is provided with a primary air cavity that communicates with the first ejection channel.
The burner according to claim 11, wherein the primary air cavity comprises a first cavity portion and a second cavity portion, and the first cavity portion is from a side of the bottom cup lid body Protruding, the first cavity portion is formed with a first mating groove, the second cavity portion is protruded from a side wall of the bottom cup seat body, and the second cavity portion is formed with a second mating groove The first cavity portion and the second cavity portion are connected in a cooperative manner, and the first matching groove and the second matching groove jointly form the primary air cavity.
The burner according to claim 12, wherein the first cavity portion includes an annular member and a first connecting wall, the annular member is protruded from a side edge of the bottom cup cover body, and the first A connecting wall is connected to the side of the annular member, the annular member is located between the first connecting wall and the side of the bottom cup cover body, and the first connecting wall surrounds the first mating groove, The first connection wall is opposite to the air inlet of the first ejection channel;

The second cavity portion includes a second connection wall, the second connection wall is provided with a mounting port, the second connection wall surrounds the second fitting groove, and the first connection wall is mounted on the mounting port. To cooperate with the second connecting wall.
The burner according to claim 13, wherein a planar shape of the annular member is an arc shape, and a planar shape of the second cavity portion is an arc shape.
The burner according to claim 13, wherein at least one of the bottom cup lid body and the bottom cup base body has a first center, the primary air cavity has a second center, and the first A center is disposed off-center from the second center.
The burner according to claim 15, wherein a planar shape of the bottom cup base is an arc shape, and the first center is a center of a circle where a plane of the bottom cup base is located, and The planar shape of the primary air cavity is an arc, and the second center is the center of the circle where the plane of the primary air cavity is located.
The burner of claim 1, wherein the flamethrower has a first center, the flamethrower is formed with an outer ring fire hole and an inner ring fire hole, and the outer ring fire hole communicates with the outer gas In the mixing cavity, the inner ring fire hole communicates with the inner gas mixing cavity, the bottom cup has a second center, and the first center and the second center are eccentrically disposed.
The burner according to claim 17, wherein the root of the outer ring fire hole and / or the inner ring fire hole has an arc shape.
The burner according to claim 1, wherein the nozzle holder comprises a first intake pipe and a second intake pipe, and the first intake pipe is provided with the first intake passage, and the second intake pipe The air pipe is provided with the second intake passage.
A gas cooker, comprising the burner according to any one of claims 1-19.