Outer fire cover, combustor and gas stove
By designing a rotating trough in the outer fire cover of the gas stove, the intake area is greater than the outlet area, forming a "squeezing" of the gas flowing through the rotating trough, the problem of stacking of rotating flames is solved, the sharp cone shape of the flame and efficient secondary air replenishment are achieved, and the combustion efficiency is improved.
Patent Information
- Application Number
- CN202323605798.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2033-12-27
AI Technical Summary
The rotating flames of existing gas stoves are prone to pile up in piles, which cannot effectively replenish secondary air, resulting in a decrease in combustion efficiency.
An external fire cover is designed, including a rotating fire groove. The intake area of the intake end of the rotating fire groove is greater than the outlet area of the outlet end, forming a "extrusion" to the gas flowing through the rotating fire groove, making the flame in a sharp cone shape and providing obvious secondary air replenishment space.
Through this design, the formed flame has a longer flame shape, a clear outline of the flame, and a clear secondary air replenishment space between adjacent flames, which improves the efficiency of the gas.
Smart Images
Figure CN222760886U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of kitchen appliances, in particular to an outer fire cover, a burner and a gas stove. Background Art
[0002] At present, some burners of gas stoves on the market use rotary fire covers. However, the rotary flames produced will accumulate in piles, which makes it impossible to effectively replenish secondary air and reduces combustion efficiency. Utility Model Content
[0003] In view of the shortcomings of the existing methods, the present application provides an external fire cover, a burner and a gas stove to solve the technical problem that the rotating fire flames produced by the prior art will accumulate in piles, thus failing to effectively supplement the secondary air and reducing the combustion efficiency.
[0004] In the first aspect, an embodiment of the present application provides an external fire cover, comprising: a cover body, provided with a rotating fire groove for forming a rotating fire, the rotating fire groove comprising a connected air inlet end and an air outlet end, and the air inlet area of the air inlet end is larger than the air outlet area of the air outlet end.
[0005] As an optional embodiment, the cover body includes an inner annular wall and an outer annular wall arranged at intervals, and a gas channel is formed between the inner annular wall and the outer annular wall; the fire rotation groove penetrates the inner annular wall along the thickness direction of the inner annular wall, and is connected to the gas channel and the external environment.
[0006] As an optional implementation, the inner annular wall is a structure with a large opening at one end and a small opening at the other end.
[0007] As an optional implementation, the gas outlet direction of the fire swirl groove is inclined upward.
[0008] As an optional implementation, the outer fire cover includes a plurality of the fire rotation grooves; the cover body is an annular structure; and the plurality of the fire rotation grooves are distributed along the circumference of the cover body.
[0009] As an optional implementation, the gas flow area of the swirl groove decreases along the gas flow direction of the swirl groove.
[0010] In a second aspect, an embodiment of the present application provides a burner, comprising: an external fire cover according to any one of the aforementioned embodiments of the present application.
[0011] In a third aspect, an embodiment of the present application provides a gas stove, comprising: a burner in the aforementioned embodiment of the present application.
[0012] The present application provides an external fire cover, a burner and a gas stove. The technical solution provided by the embodiments of the present application brings at least the following beneficial effects:
[0013] The air intake area at the air intake end of the swirl groove is larger than the air outlet area at the air outlet end, thereby forming "squeezing" of the fuel gas flowing through the swirl groove, so that the formed flame is in the shape of a pointed cone and has a long flame shape. The flame outline is clear, and obvious secondary air replenishment space is formed between adjacent flames to facilitate the replenishment of secondary air, thereby improving the efficiency of the fuel gas.
[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:
[0016] Figure 1 A schematic diagram of the structure of an external fire cover provided in an embodiment of the present application;
[0017] Figure 2 A bottom view of an outer fire cover provided in an embodiment of the present application;
[0018] Figure 3 A schematic diagram of a transverse cross-sectional structure of an outer fire cover provided in an embodiment of the present application;
[0019] Figure 4 A schematic diagram of the longitudinal cross-sectional structure of an outer fire cover provided in an embodiment of the present application;
[0020] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.
[0021] Reference numerals and corresponding descriptions:
[0022] 1: cover body; 11: fire-spinning groove; 12: inner ring wall; 13: outer ring wall;
[0023] 2: Gas channel. DETAILED DESCRIPTION
[0024] The present application is described in detail below, and examples of embodiments of the present application are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. In addition, if the detailed description of the known technology is unnecessary for the features of the present application shown, it will be omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application.
[0025] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, elements and / or components, but does not exclude the presence or addition of one or more other features, elements, components and / or groups thereof. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.
[0026] like Figure 1-3 As shown, an embodiment of the present application provides an external fire cover, which mainly includes a cover body 1, and the cover body 1 is provided with a rotating fire groove 11 for forming a rotating fire. The rotating fire groove 11 includes a connected air inlet end and an air outlet end, and the air inlet area of the air inlet end is larger than the air outlet area of the air outlet end.
[0027] In this embodiment, the outer fire cover is arranged on a horizontal plane. The cover body 1 is an annular cover structure, which has an annular opening with an opening direction downward. The swirl fire groove 11 is used for the fuel gas to flow from the air inlet end to the air outlet end and burn on the inner side of the cover body 1 to form a swirl fire.
[0028] The external fire cover provided in the present application forms "extrusion" of the fuel gas flowing through the swirl groove 11 by making the air intake area at the air intake end of the swirl groove 11 larger than the air outlet area at the air outlet end, so that the formed flame is in the shape of a pointed cone and has a long flame shape. The flame outline is clear, and obvious secondary air replenishment space is formed between adjacent flames to facilitate the replenishment of secondary air, thereby improving the efficiency of the fuel gas.
[0029] like Figure 1-5 As shown, as an optional embodiment, the cover body 1 includes an inner annular wall 12 and an outer annular wall 13 arranged at intervals, and a gas channel 2 is formed between the inner annular wall 12 and the outer annular wall 13; the fire rotation groove 11 is arranged on the inner annular wall 12 and connected to the gas channel 2 and the external environment.
[0030] Based on the above embodiments, in this embodiment, the outer annular wall 13 surrounds the outer side of the inner annular wall 12, and the annular gas channel 2 is formed between the inner annular wall 12 and the outer annular wall 13. The inner annular wall 12 has a certain thickness, and the swirl groove 11 penetrates the inner annular wall 12 along the thickness direction of the inner annular wall 12 to connect the opposite sides of the inner annular wall 12, that is, to connect the gas channel 2 on one side of the inner annular wall 12 and the outside on the other side, so that the gas in the gas channel 2 flows through the swirl groove 11 and burns outside (that is, inside the cover 1) to form a swirl fire.
[0031] like Figure 4 As shown, as an optional embodiment, the inner annular wall 12 is a structure with a large opening at one end and a small opening at the other end.
[0032] Based on the foregoing embodiments, in this embodiment, the top of the inner annular wall 12 is a large opening end, and the bottom of the inner annular wall 12 is an annular structure with a small opening end.
[0033] like Figure 4 As shown, as an optional implementation, the gas outlet direction of the swirl groove 11 is inclined upward.
[0034] Based on the aforementioned embodiments, in the present embodiment, the swirl groove 11 penetrates the inner annular wall 12 along the thickness direction of the inner annular wall 12, the air inlet end of the swirl groove 11 is arranged on the side of the inner annular wall 12 facing the outer annular wall 13, the air outlet end of the swirl groove 11 is arranged on the side of the inner annular wall 12 opposite to the outer annular wall 13, and the air outlet end of the swirl groove 11 is arranged to be inclined upward, so that the combustion gas is sprayed out upwardly inclined to form an upwardly inclined flame.
[0035] like Figure 1-4 As shown, as an optional embodiment, as an optional embodiment, the outer fire cover includes a plurality of fire rotation grooves 11; the cover body 1 is an annular structure; the plurality of fire rotation grooves 11 are distributed along the circumference of the cover body 1.
[0036] Based on the foregoing embodiments, in this embodiment, the swirl groove 11 is tilted, that is, the flow direction of the swirl groove 11 forms an angle with the thickness direction of the inner ring wall 12, and the swirl groove 11 is distributed along the circumference of the cover body 1 to facilitate the combustion of gas to form a swirl fire.
[0037] In some embodiments, the flow direction of the swirl groove 11 is perpendicular to the thickness direction of the inner annular wall 12 .
[0038] like Figure 5 As shown, as an optional implementation, the gas flow area of the swirl groove 11 decreases along the gas flow direction of the swirl groove 11.
[0039] Based on the above embodiments, in this embodiment, the fire swirl groove 11 is a rectangular hole structure, which is tilted, and the air inlet end and the air outlet end of the fire swirl groove 11 are both rectangular openings. The gas flow area of the fire swirl groove 11 decreases along the gas flow direction of the fire swirl groove 11, and the gas compresses the gas along the contour shape of the fire swirl groove 11 and burns to form a concentrated and powerful groove fire. Among them, the gas flow direction of the fire swirl groove 11 is from one side of the inner ring wall 12 close to the gas channel 2 to the other side of the inner ring wall 12.
[0040] Figure 5 The middle dotted line is a schematic outline of the top and bottom of the fire swirl groove 11. Figure 5 It can be known that the gas flow area of the swirl groove 11 decreases along the gas flow direction of the swirl groove 11 .
[0041] Based on the same inventive concept, an embodiment of the present application provides a burner, comprising an external fire cover of any one of the aforementioned embodiments of the present application.
[0042] Based on the aforementioned embodiments, in this embodiment, the burner also includes an ignition divider and an inner fire cover. The outer fire cover and the inner fire cover are both arranged on the ignition divider. The outer fire cover surrounds the outer side of the inner fire cover. The bottom of the swirl groove 11 of the outer fire cover has an opening. The bottom opening of the swirl groove 11 cooperates with the ignition divider to close and form a gas flow channel. The gas flow channel is used for the gas in the gas channel 2 to flow to the outside and ignite to form a flame.
[0043] Based on the same inventive concept, an embodiment of the present application provides a gas stove, including the burner in the aforementioned embodiment of the present application.
[0044] By applying the embodiments of the present application, at least the following beneficial effects can be achieved:
[0045] The air intake area at the air intake end of the swirl groove 11 is larger than the air outlet area at the air outlet end, thereby forming "squeezing" of the fuel gas flowing through the swirl groove 11, so that the formed flame is in the shape of a pointed cone and has a long flame shape. The flame outline is clear, and obvious secondary air replenishment space is formed between adjacent flames to facilitate the replenishment of secondary air, thereby improving the efficiency of the fuel gas.
[0046] In the description of the present application, it should be understood that the terms "center", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 therefore should not be understood as a limitation on the present application.
[0047] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.
[0048] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0049] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.
[0050] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.
Claims
1. An external fire cover, characterized in that: include: The cover body (1) is provided with a fire swirl groove (11) for forming a fire swirl, wherein the fire swirl groove (11) comprises an air inlet end and an air outlet end which are connected, and an air inlet area of the air inlet end is larger than an air outlet area of the air outlet end.
2. The outer fire cover according to claim 1, characterized in that: The cover body (1) comprises an inner annular wall (12) and an outer annular wall (13) which are arranged at intervals, and a gas passage (2) is formed between the inner annular wall (12) and the outer annular wall (13); The fire swirl groove (11) penetrates the inner ring wall (12) along the thickness direction of the inner ring wall (12) and is connected to the gas channel (2) and the external environment.
3. The outer fire cover according to claim 2, characterized in that: The inner annular wall (12) is a structure with a large opening at one end and a small opening at the other end.
4. The outer fire cover according to claim 3, characterized in that: The gas outlet direction of the fire swirl groove (11) is inclined upward.
5. The outer fire cover according to claim 1, characterized in that: It comprises a plurality of fire-spinning grooves (11); The cover body (1) is a ring-shaped structure; The plurality of fire-spinning grooves (11) are distributed along the circumference of the cover body (1).
6. The outer fire cover according to any one of claims 1 to 5, characterized in that: The gas flow area of the swirl groove (11) decreases along the gas flow direction of the swirl groove (11).
7. A burner, characterized in that: include: An outer fire cover as claimed in any one of claims 1 to 6.
8. A gas stove, characterized in that: include: A burner as claimed in claim 7.