Burner with upper air inlet and gas stove

Abstract

The utility model relates to the technical field of gas stoves, and particularly discloses an upper air inlet burner and a gas stove. The upper air inlet burner comprises a base and a burner body arranged above the base, two nozzle seats are arranged on the top face of the base, and a first nozzle and a second nozzle are arranged on the two nozzle seats respectively; an outer ring gas mixing cavity and an inner ring gas mixing cavity are formed in the combustor body, and a first injection pipe and a second injection pipe are arranged at the bottom of the combustor body. The first nozzle faces the first injection pipe, the first injection pipe is communicated with the outer ring gas mixing cavity, the second nozzle faces the second injection pipe, and the second injection pipe is communicated with the inner ring gas mixing cavity; the first injection pipe and the second injection pipe extend in the radial direction of the combustor body, and a preset included angle is formed between the extending direction of the first injection pipe and the extending direction of the second injection pipe. The gas distribution uniformity in the outer ring gas mixing cavity and the inner ring gas mixing cavity can be improved, and the combustion condition of flames is improved.

Description

Technical Field

[0001] This utility model relates to the field of gas stove technology, and in particular to a top-intake burner and a gas stove. Background Technology

[0002] Many existing gas stoves adopt a top-intake air intake design, meaning that the air required for gas combustion enters the stove from the top of the burner. For example, Chinese utility model patent CN221005135U discloses a top-intake gas stove where the ejector tubes connecting the outer and inner ring mixing chambers are parallel to each other and eccentrically positioned relative to the center of the burner. The outer ring mixing chamber is usually circular, while the inner ring mixing chamber is usually circular. Because the ejector tubes are eccentric, the gas entering the mixing chambers from the ejector tubes diffuses unevenly to both sides, resulting in uneven gas distribution in the outer and inner ring mixing chambers, and consequently, uneven flame. Utility Model Content

[0003] This invention provides a burner and gas stove with top air intake, which can improve the uniformity of gas distribution in the outer and inner ring mixing chambers and improve the combustion of the flame.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] According to a first aspect of the present invention, an embodiment of the present invention provides a top-inlet burner, comprising a base and a burner body disposed above the base. Two nozzle seats are disposed on the top surface of the base, and a first nozzle and a second nozzle are respectively disposed on the two nozzle seats. The burner body has an outer annular mixing chamber and an inner annular mixing chamber inside, and a first ejector tube and a second ejector tube are disposed at the bottom of the burner body. The first nozzle faces the inlet end of the first ejector tube, and the outlet end of the first ejector tube communicates with the outer annular mixing chamber. The second nozzle faces the inlet end of the second ejector tube, and the outlet end of the second ejector tube communicates with the inner annular mixing chamber. Both the first ejector tube and the second ejector tube extend radially along the burner body, and the extension directions of the first ejector tube and the second ejector tube form a predetermined angle with each other.

[0006] In some embodiments, the outlet end of the second ejector tube is fixedly connected to the first ejector tube, and the outer wall of the first ejector tube forms a guide wall for guiding the gas in the second ejector tube to flow into the inner annular mixing chamber.

[0007] In some embodiments, the guide wall is arc-shaped.

[0008] In some embodiments, the bottom of the burner body is further provided with a protrusion, the interior of which has a connecting groove communicating with the outer ring mixing chamber, the outlet end of the first ejector tube communicating with the connecting groove, and the connecting groove being symmetrically arranged relative to the axis of the first ejector tube.

[0009] In some embodiments, the burner body includes a burner base, a middle cover, an inner ring flame cap, and an outer ring flame cap. The middle cover is disposed on the burner base, and the inner and outer ring flame caps are both disposed on the middle cover. The burner base, the middle cover, and the inner ring flame cap together form an inner ring mixing chamber, and the burner base, the middle cover, and the outer ring flame cap together form an outer ring mixing chamber. The first ejector tube and the second ejector tube are both disposed at the bottom of the burner base.

[0010] In some embodiments, the middle cover includes a first ring body, a second ring body, and a third ring body arranged coaxially, the second ring body being located inside the first ring body, the third ring body being located inside the second ring body, the middle cover also includes a plurality of external connectors connecting the first ring body and the second ring body, and an internal connector connecting the second ring body and the third ring body, the outer ring mixing chamber being located between the first ring body and the second ring body, and the inner ring mixing chamber being located between the second ring body and the third ring body.

[0011] In some embodiments, one of the external connectors is located above the outlet end of the first ejector tube, and the external connector located above the outlet end of the first ejector tube is provided with a plurality of vent holes penetrating through it.

[0012] In some embodiments, a positioning post is provided on the top surface of the nozzle seat with the first nozzle, and two positioning posts are provided on the top surface of the base. The two positioning posts on the top surface of the base are symmetrically distributed relative to the injection center of the first nozzle. The bottom surface of the burner body is provided with three positioning holes that are adapted to the three positioning posts respectively, and the three positioning posts are respectively inserted into the positioning holes that are adapted to them.

[0013] In some embodiments, the preset included angle is 90°.

[0014] According to a second aspect of the present invention, an embodiment of the present invention provides a gas stove, including an upward-intake burner as described in any of the first aspects above.

[0015] This invention has at least the following beneficial effects: the first ejector tube and the second ejector tube of this invention both extend radially along the burner body, and the extension directions of the first ejector tube and the second ejector tube form a preset angle with each other; the outer ring mixing chambers on both sides of the outlet end of the first ejector tube are relatively symmetrically arranged, and the inner ring mixing chambers on both sides of the outlet end of the second ejector tube are also relatively symmetrically arranged, so that the gas flowing out from the first ejector tube and the second ejector tube can flow relatively evenly to both sides, thereby improving the uniformity of gas distribution in the outer ring mixing chamber and the inner ring mixing chamber and improving the combustion condition of the flame. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a top-inlet burner according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of an upper-inlet burner according to one embodiment of the present invention from another perspective;

[0018] Figure 3 This is a schematic diagram of the base structure according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the burner body according to an embodiment of the present invention;

[0020] Figure 5 for Figure 4 The diagram shows a cross-sectional view of the burner body taken out along a vertical plane parallel to the axis of the second ejector tube.

[0021] Figure 6 for Figure 4 The diagram shows a cross-sectional view of the burner body taken out along a vertical plane parallel to the axis of the first ejector tube.

[0022] Figure 7 This is a schematic diagram of the burner body after removing the flame cap according to an embodiment of the present invention;

[0023] Figure 8 This is an exploded view of the burner body according to one embodiment of the present invention.

[0024] The attached figures are labeled as follows:

[0025] The burner body 100, first ejector tube 101, second ejector tube 102, outer ring mixing chamber 103, inner ring mixing chamber 104, guide wall 105, protrusion 106, connecting groove 107, positioning hole 108, burner head base 110, middle cover 120, first ring body 121, second ring body 122, third ring body 123, outer connector 124, inner connector 125, vent hole 126, outer ring burner cover 130, inner ring burner cover 140;

[0026] Base 200, nozzle seat 210, first nozzle 221, second nozzle 222, positioning post 230. Detailed Implementation

[0027] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0028] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intervening element (e.g., the third element) between the element and the other element.

[0030] An embodiment of this utility model provides a top-inlet burner, such as... Figure 1-4 As shown, the device includes a base 200 and a burner body 100 disposed above the base 200. Two nozzle seats 210 are provided on the top surface of the base 200, each with a first nozzle 221 and a second nozzle 222. Both the first nozzle 221 and the second nozzle 222 inject combustion gas towards their front sides. The burner body 100 has an outer ring mixing chamber 103 and an inner ring mixing chamber 104. Both chambers are used for mixing combustion gas and air. The mixture in the outer ring mixing chamber 103 forms an outer ring flame after combustion, and the mixture in the inner ring mixing chamber 104 forms an inner ring flame after combustion.

[0031] The burner body 100 has a first ejector tube 101 and a second ejector tube 102 at its bottom. Both the first ejector tube 101 and the second ejector tube 102 have an inlet end and an outlet end. Gas and air enter from the inlet end and exit from the corresponding outlet end. The first nozzle 221 faces the inlet end of the first ejector tube 101, and the outlet end of the first ejector tube 101 is connected to the outer ring mixing chamber 103. When the first nozzle 221 injects gas, gas and air can enter the first ejector tube 101 and eventually flow to the outer ring mixing chamber 103. The second nozzle 222 faces the inlet end of the second ejector tube 102, and the outlet end of the second ejector tube 102 is connected to the inner ring mixing chamber 104. When the second nozzle 222 injects gas, gas and air can enter the second ejector tube 102 and eventually flow to the inner ring mixing chamber 104.

[0032] The burner body 100 is generally circular in shape. The first ejector tube 101 and the second ejector tube 102 both extend radially along the burner body 100. Specifically, the extension directions of the first ejector tube 101 and the second ejector tube 102 can point towards the center of the inner annular mixing chamber 104. At the same time, the extension directions of the first ejector tube 101 and the second ejector tube 102 form a predetermined angle with each other and are not parallel to each other to avoid interference.

[0033] Since the outer ring mixing chamber 103 is usually annular and the inner ring mixing chamber 104 is usually circular, when both the first ejector tube 101 and the second ejector tube 102 extend radially along the burner body 100, the outer ring mixing chambers 103 on both sides of the outlet end of the first ejector tube 101 are symmetrically arranged with respect to the axis of the first ejector tube 101, and the inner ring mixing chambers 104 on both sides of the outlet end of the second ejector tube 102 are symmetrically arranged with respect to the axis of the second ejector tube 102. The gas flowing out from the first ejector tube 101 and the second ejector tube 102 can flow relatively evenly to both sides, so that it is relatively evenly distributed in the outer ring mixing chamber 103 and the inner ring mixing chamber 104, thereby improving the uniformity of gas distribution in the outer ring mixing chamber 103 and the inner ring mixing chamber 104, improving the combustion condition of the flame, and making the outer ring flame and the inner ring flame relatively uniform. Meanwhile, since the second ejector tube 102 extends radially along the burner body 100, its length is shorter than in other directions, allowing the gas and air to enter the inner ring mixing chamber 104 more quickly.

[0034] In some embodiments, such as Figure 5 and Figure 7As shown, the outlet end of the second ejector tube 102 is fixedly connected to the first ejector tube 101. Specifically, they can be fixed together by a fixed structure or connected by an integral molding process. The outer wall of the first ejector tube 101 forms a guide wall 105 to guide the gas in the second ejector tube 102 to the inner ring mixing chamber 104. This arrangement prevents the first ejector tube 101 and the second ejector tube 102 from communicating, ensuring that the gas and air in their respective channels do not interfere with each other. At the same time, when the gas flows along the second ejector tube 102, it will encounter the guide wall 105, which guides the gas to flow further into the inner ring mixing chamber 104, making the gas flow smoother.

[0035] Furthermore, the guide wall 105 is arc-shaped. The arc-shaped structure reduces the resistance to gas flow, allowing the gas to flow more smoothly along the guide wall 105, thereby further improving gas flowability. Specifically, the guide wall 105 can be an outwardly convex arc or an inwardly concave arc.

[0036] In some embodiments, such as Figure 4 and Figure 5 As shown, a protrusion 106 is also provided at the bottom of the burner body 100. The interior of the protrusion 106 has a connecting groove 107 that communicates with the outer ring mixing chamber 103. The outlet end of the first ejector tube 101 communicates with the connecting groove 107. The connecting groove 107 is symmetrically arranged with respect to the axis of the first ejector tube 101. The gas and air in the first ejector tube 101 first enter the connecting groove 107, and then enter the outer ring mixing chamber 103 through the connecting groove 107. Since the connecting groove 107 is symmetrically arranged, the gas can flow relatively evenly to both ends of the connecting groove 107 after flowing out of the first ejector tube 101, which ensures that the gas can enter the outer ring mixing chamber 103 relatively evenly. At the same time, this structure also allows the extension direction of the first ejector tube 101 to be parallel to the bottom surface of the outer ring mixing chamber 103, without the need for an oblique setting. This makes it easier to align the orientation of the first nozzle 221 with the extension direction of the first ejector tube 101, and makes it easier to arrange the first nozzle 221.

[0037] In some embodiments, such as Figure 4 and Figure 8 As shown, the burner body 100 includes a burner base 110, a middle cover 120, an inner ring flame cap 140, and an outer ring flame cap 130. The middle cover 120 is placed on the burner base 110, and the inner ring flame cap 140 and the outer ring flame cap 130 are both placed on the middle cover 120. The burner base 110, the middle cover 120, and the inner ring flame cap 140 enclose an inner ring mixing chamber, and the burner base 110, the middle cover 120, and the outer ring flame cap 130 enclose an outer ring mixing chamber. The first ejector tube 101 and the second ejector tube 102 are both located at the bottom of the burner base 110.

[0038] The burner body 100 in this embodiment adopts a split structure. The burner base 110, middle cover 120, inner ring burner cover 140 and outer ring burner cover 130 are easier to form. After assembly, the required outer ring mixing chamber 103 and inner ring mixing chamber 104 can be formed.

[0039] Furthermore, the middle cover 120 includes a first ring body 121, a second ring body 122, and a third ring body 123 coaxially arranged. The second ring body 122 is located inside the first ring body 121, and the third ring body 123 is located inside the second ring body 122. The middle cover 120 also includes a plurality of outer connectors 124 connecting the first ring body 121 and the second ring body 122, and an inner connector 125 connecting the second ring body 122 and the third ring body 123. The outer ring mixing chamber is located between the first ring body 121 and the second ring body 122, and the inner ring mixing chamber is located between the second ring body 122 and the third ring body 123.

[0040] In this embodiment, the third ring 123 forms the peripheral wall structure of the inner ring mixing chamber, and the first ring 121 and the second ring 122 form the outer peripheral wall and inner peripheral wall of the outer ring mixing chamber, respectively, to effectively isolate the inner ring mixing chamber and the outer ring mixing chamber. The inner connector 125 keeps the positions of the second ring 122 and the third ring 123 relatively fixed, and the outer connector 124 keeps the positions of the first ring 121 and the second ring 122 relatively fixed.

[0041] Both the outer connector 124 and the inner connector 125 can extend radially along the third ring body 123, and both the outer connector 124 and the inner connector 125 can be uniformly and symmetrically distributed relative to the axis of the third ring body 123.

[0042] Furthermore, one of the external connectors 124 is located above the outlet end of the first ejector tube 101, and the external connector 124 located above the outlet end of the first ejector tube 101 is provided with several through-holes 126. Since the outlet end of the first ejector tube 101 is connected to the connecting groove 107, there is a large gap here. The external connector 124 located above this position can strengthen the connection strength of the first ring body 121 and the second ring body 122 at this location, and reduce the deformation of the first ring body 121 and the second ring body 122. At the same time, some gas can directly enter the outer ring mixing chamber through the through-holes 126 on the external connector 124, so as to reduce the obstruction of the airflow and facilitate the uniform diffusion of gas into the outer ring mixing chamber.

[0043] In some embodiments, the first ejector tube 101 and the second ejector tube 102 can be integrally formed with the burner base 110, so that the first ejector tube 101, the second ejector tube 102 and the burner base 110 can be integrally formed, thereby strengthening the connection between them.

[0044] In some embodiments, the middle cover 120 and the stove base 110 can be locked together by screws or other fasteners to prevent loosening.

[0045] In some embodiments, the top surface of the burner base 110 may be provided with an opening, which is connected to the second ejector tube 102 and the inner ring mixing chamber respectively, and one side wall of the opening is the guide wall 105 of the above embodiment.

[0046] In some embodiments, such as Figure 3 and Figure 4 As shown, the top surface of the nozzle seat 210, which is equipped with the first nozzle 221, is provided with a positioning post 230, and the top surface of the base 200 is provided with two positioning posts 230, making a total of three positioning posts 230. The two positioning posts 230 on the top surface of the base 200 are symmetrically distributed with respect to the injection center of the first nozzle 221, and the three positioning posts are arranged in a layout similar to an isosceles triangle. The bottom surface of the burner body 100 is provided with three positioning holes 108 that are adapted to the three positioning posts 230, and the three positioning posts 230 are respectively inserted into the corresponding positioning holes 108.

[0047] In this embodiment, the burner body 100 is positioned by the cooperation of the positioning post 230 and the positioning hole 108, which facilitates the accurate placement of the burner body 100 on the base 200, and the burner body 100 is not prone to lateral movement relative to the base 200 once in place. At the same time, this arrangement of the three positioning posts can ensure that the burner body 100 is subjected to uniform force, so as to stably support the burner body 100.

[0048] In some embodiments, the preset included angle of the above embodiments is 90°. The included angle of 90° facilitates the arrangement of the first nozzle 221 and the second nozzle 222. Of course, other angles can be used as needed.

[0049] An embodiment of this utility model provides a gas stove, including an upper-air-intake burner of any of the above embodiments. For a detailed description of the upper-air-intake burner, please refer to the above embodiments, which will not be repeated here.

[0050] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A top-inlet burner, characterized in that: The device includes a base and a burner body disposed on top of the base. The top surface of the base has two nozzle seats, each with a first nozzle and a second nozzle. The burner body has an outer annular mixing chamber and an inner annular mixing chamber. The bottom of the burner body has a first ejector tube and a second ejector tube. The first nozzle faces the inlet end of the first ejector tube, and the outlet end of the first ejector tube communicates with the outer annular mixing chamber. The second nozzle faces the inlet end of the second ejector tube, and the outlet end of the second ejector tube communicates with the inner annular mixing chamber. Both the first and second ejector tubes extend radially along the burner body, and the extension directions of the first and second ejector tubes form a predetermined angle with each other.

2. The burner with top air intake according to claim 1, characterized in that: The outlet end of the second ejector tube is fixedly connected to the first ejector tube, and the outer wall of the first ejector tube forms a guide wall for guiding the gas in the second ejector tube to flow into the inner ring mixing chamber.

3. The top-inlet burner according to claim 2, characterized in that: The guide wall is arc-shaped.

4. The top-inlet burner according to claim 1, characterized in that: The bottom of the burner body is also provided with a protrusion, the interior of which has a connecting groove communicating with the outer ring mixing chamber. The outlet end of the first ejector tube is connected to the connecting groove, and the connecting groove is symmetrically arranged relative to the axis of the first ejector tube.

5. The top-inlet burner according to any one of claims 1-4, characterized in that: The burner body includes a burner base, a middle cover, an inner ring flame cover, and an outer ring flame cover. The middle cover is placed on the burner base, and the inner and outer ring flame covers are placed on the middle cover. The burner base, the middle cover, and the inner ring flame cover together form an inner ring mixing chamber, and the burner base, the middle cover, and the outer ring flame cover together form an outer ring mixing chamber. The first ejector tube and the second ejector tube are both located at the bottom of the burner base.

6. The top-inlet burner according to claim 5, characterized in that: The middle cover includes a first ring body, a second ring body, and a third ring body arranged coaxially. The second ring body is located inside the first ring body, and the third ring body is located inside the second ring body. The middle cover also includes multiple external connectors connecting the first ring body and the second ring body, as well as internal connectors connecting the second ring body and the third ring body. The outer ring mixing chamber is located between the first ring body and the second ring body, and the inner ring mixing chamber is located between the second ring body and the third ring body.

7. The top-inlet burner according to claim 6, characterized in that: One of the external connectors is located above the outlet end of the first ejector tube, and the external connector located above the outlet end of the first ejector tube is provided with several vent holes that penetrate through it.

8. The top-inlet burner according to any one of claims 1-4, characterized in that: The top surface of the nozzle seat with the first nozzle is provided with a positioning post, and the top surface of the base is provided with two positioning posts. The two positioning posts on the top surface of the base are symmetrically distributed relative to the injection center of the first nozzle. The bottom surface of the burner body is provided with three positioning holes that are adapted to the three positioning posts respectively, and the three positioning posts are respectively inserted into the positioning holes that are adapted to them.

9. The top-inlet burner according to any one of claims 1-4, characterized in that: The preset included angle is 90°.

10. A gas stove, characterized in that: Including the top-inlet burner as described in any one of claims 1-9.

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