Commercial high-fire combustion system

Abstract

The utility model discloses a commercial high-fire combustion system. The commercial high-fire combustion system comprises a combustor, a plug valve and a furnace plate, the combustor is provided with a furnace seat and an injection pipe; the furnace seat is provided with an annular inner ring gas mixing cavity and an annular outer ring gas mixing cavity; the inner ring gas mixing cavity and the outer ring gas mixing cavity are provided with a plurality of fire spraying openings. The outer ring gas mixing cavity is annularly arranged on the periphery of the inner ring gas mixing cavity at intervals; the upper plate surface of the inner ring gas mixing cavity is lower than the upper plate surface of the outer ring gas mixing cavity; the stove plates are annularly arranged on the periphery of the outer ring gas mixing cavity at intervals. According to the utility model, more spans are provided for burning flames ejected from the fire ejection port of the inner ring gas mixing cavity, the bottom of a round-bottom pot can be in contact with a flame core part of the flames, the high-fire effect of a commercial stove is improved, and meanwhile, the upper plate surfaces of the inner ring gas mixing cavity and the outer ring gas mixing cavity are of a staggered structure, so that the space height of gas and air mixing can be staggered; and the overall combustion heat efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of commercial high-power stoves, in particular to a commercial high-power combustion system. Background Art

[0002] Existing commercial gas stoves are mostly composed of a cock valve and a burner assembly. When in use, the unit air intake of the burner assembly is adjusted by screwing the cock valve, thereby controlling the firepower. Low-cost commercial gas stoves usually adopt an atmospheric direct injection burner structure formed by integral casting; the burner usually has inner and outer ring mixing cavities arranged on a flat stove base structure, and a plurality of direct fire holes are opened on the mixing cavities to spray gas. However, during the cooking process of commercial gas stoves, round-bottom cookware is usually used. There are differences in the height gaps between the bottom and the side of the round-bottom cookware and the stove base. The bottom of the round-bottom cookware is closer to the stove base, and there is a lack of sufficient height space for combustion, resulting in a lower combustion thermal efficiency in the central region. Therefore, further improvement is needed. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a commercial high-power combustion system.

[0004] A technical solution adopted by an embodiment of the utility model to solve its technical problems is: a commercial high-power combustion system, including: a burner, a cock valve, and a stove top;

[0005] The burner is provided with a stove base and an ejector pipe; the stove base is provided with an annular inner ring mixing cavity and an outer ring mixing cavity; two ejector pipes are arranged side by side, and the air outlet ends are respectively connected to the inner ring mixing cavity and the outer ring mixing cavity, and the air inlet ends are connected to the nozzles of the cock valve; a plurality of fire holes are arranged in the inner ring mixing cavity and the outer ring mixing cavity;

[0006] The outer ring mixing cavity is spaced around the outer periphery of the inner ring mixing cavity; the upper plate surface height of the inner ring mixing cavity is lower than the upper plate surface height of the outer ring mixing cavity; the stove top is spaced around the outer periphery of the outer ring mixing cavity.

[0007] Optionally, a plurality of connecting ribs are arranged between the inner ring mixing cavity and the outer ring mixing cavity.

[0008] Optionally, the height of one end of the connecting rib close to the inner ring mixing cavity is lower than the upper plate surface height of the inner ring mixing cavity.

[0009] Optionally, a fire guiding extension cavity is arranged between the inner ring mixing cavity and the ejector pipe; a plurality of fire guiding holes are opened above the fire guiding extension cavity.

[0010] Optionally, two circles of the flame nozzles are annularly arranged at the upper inner edge and outer edge of the inner ring mixing chamber; two circles of the flame nozzles are annularly arranged at the upper inner edge and outer edge of the outer ring mixing chamber.

[0011] Optionally, the ejector tube is sequentially provided with an intake section, a contraction section, a steady flow section, an expansion section and an extension section from the intake end to the outlet end; the contraction section has a horn-shaped structure with a gradually narrowing cross-section, the expansion section has a horn-shaped structure with a gradually expanding cross-section, and the steady flow section has a cylindrical tube structure with an unchanged cross-section.

[0012] Optionally, connection holes for installing a shielding shell are provided above and on the side of the intake end of the ejector tube; the shielding shell covers the outside of the cock valve, the nozzle and the intake end of the ejector tube.

[0013] Optionally, the cooking plate is provided with a heat concentrating ring wall.

[0014] The beneficial effects of the present utility model are as follows: the upper plate surface height of the inner ring mixing chamber is lower than the upper plate surface height of the outer ring mixing chamber; the overall height of the inner ring mixing chamber is reduced, providing more span for the flame ejected from the flame nozzles of the inner ring mixing chamber to burn, enabling the bottom of the round-bottom cookware to contact the core part of the flame, improving the high-fire effect of the commercial stove. At the same time, the stepped structure of the upper plate surfaces of the inner ring mixing chamber and the outer ring mixing chamber can stagger the spatial height of the gas-air mixture, effectively improving the overall combustion thermal efficiency.

[0015] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following specific preferred embodiments are given in conjunction with the accompanying drawings and are described in detail as follows. Description of the Drawings

[0016] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a schematic structural diagram of the commercial high-fire combustion system of the present utility model;

[0018] Figure 2 is Figure 1 the exploded view of the commercial high-fire combustion system in

[0019] Figure 3 is Figure 1 the cross-sectional view of the commercial high-fire combustion system in

[0020] Main Component Symbol Description:

[0021] 10. Burner; 11. Furnace base; 111. Inner ring gas mixing chamber; 112. Outer ring gas mixing chamber; 113. Pilot flame extension chamber; 12. Ejector pipe; 121. Intake section; 122. Converging section; 123. Steady flow section; 124. Diverging section; 125. Extension section; 13. Flame outlet; 14. Connecting rib; 15. Pilot flame port; 16. Connecting hole; 20. Plug valve; 30. Burner grate; 31. Energy-gathering ring wall; 40. Nozzle; 50. Shielding shell. Detailed implementation manners

[0022] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0023] In the description of the present invention, "a plurality of" means two or more. Understandings such as "greater than", "less than", and "exceeding" do not include the present number, and understandings such as "above", "below", and "within" include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0024] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by "up", "down", "front", "rear", "left", "right", etc., is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 construed as a limitation on the present invention.

[0025] In the present invention, unless otherwise clearly defined, words such as "set", "installed", and "connected" should be understood in a broad sense. For example, they can be directly connected, or indirectly connected through an intermediate medium; they can be fixedly connected, or detachably connected, or integrally formed; they can be mechanically connected; they can be the communication inside two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0026] Embodiment

[0027] Referring to Figures 1 to 3 , a commercial high-power combustion system proposed by the present invention includes: a burner 10, a plug valve 20, and a burner grate 30;

[0028] The burner 10 is provided with a furnace base 11 and an ejector pipe 12; the furnace base 11 is provided with an annular inner-ring gas mixing cavity 111 and an outer-ring gas mixing cavity 112; two ejector pipes 12 are arranged side by side, and the air outlet ends are respectively connected to the inner-ring gas mixing cavity 111 and the outer-ring gas mixing cavity 112, and the air inlet ends are connected to the nozzle 40 of the cock valve 20; a plurality of flame outlets 13 are arranged in the inner-ring gas mixing cavity 111 and the outer-ring gas mixing cavity 112;

[0029] The outer-ring gas mixing cavity 112 is spaced around the outer periphery of the inner-ring gas mixing cavity 111; the upper plate surface height of the inner-ring gas mixing cavity 111 is lower than the upper plate surface height of the outer-ring gas mixing cavity 112; the cooking plate 30 is spaced around the outer periphery of the outer-ring gas mixing cavity 112.

[0030] In the present utility model, the upper plate surface height of the inner-ring gas mixing cavity 111 is lower than the upper plate surface height of the outer-ring gas mixing cavity 112; the overall height of the inner-ring gas mixing cavity 111 is reduced, providing more span for the flames ejected from the flame outlets 13 of the inner-ring gas mixing cavity 111 to burn, enabling the bottom of the round-bottom cookware to contact the core part of the flame, improving the fierce-fire effect of the commercial stove. At the same time, the stepped structure of the upper plate surfaces of the inner-ring gas mixing cavity 111 and the outer-ring gas mixing cavity 112 can stagger the spatial height of the gas-air mixture, effectively improving the overall combustion thermal efficiency.

[0031] In this embodiment, in order to strengthen the structural strength between the inner-ring gas mixing cavity 111 and the outer-ring gas mixing cavity 112 with a spaced annular structure; a plurality of connecting ribs 14 are arranged between the inner-ring gas mixing cavity 111 and the outer-ring gas mixing cavity 112.

[0032] Furthermore, in order to avoid the blocking of the air flow for the flame holes by the connecting ribs 14, the height of the end of the connecting rib 14 close to the inner-ring gas mixing cavity 111 is lower than the upper plate surface height of the inner-ring gas mixing cavity 111.

[0033] In this embodiment, an ignition extension cavity 113 is arranged between the inner-ring gas mixing cavity 111 and the ejector pipe 12; a plurality of ignition holes 15 are opened above the ignition extension cavity 113. After the flame outlets 13 of the inner-ring gas mixing cavity 111 are ignited, the ignition holes 15 can guide and ignite the flame outlets 13 of the outer-ring gas mixing cavity 112.

[0034] In this embodiment, in order to further provide the coverage area of the flame combustion, the flame outlets 13 are arranged in two rings at the inner edge and the outer edge above the inner-ring gas mixing cavity 111; the flame outlets 13 are arranged in two rings at the inner edge and the outer edge above the outer-ring gas mixing cavity 112.

[0035] In this embodiment, the ejector tube 12 is arranged in the structure of a Venturi tube. The ejector tube 12 is successively provided with an air inlet section 121, a contraction section 122, a steady flow section 123, an expansion section 124 and an extension section 125 from the air inlet end to the air outlet end; the contraction section 122 is in the shape of a horn with a gradually narrowing cross-section, the expansion section 124 is in the shape of a horn with a gradually expanding cross-section, and the steady flow section 123 is in the shape of a cylindrical tube with a constant cross-section. Among them, both the steady flow section 123 and the extension section 125 are in the shape of a cylindrical tube with a constant cross-section, which can make the compressed and expanded gas flow form a steady flow stably and then be transported forward, improving the stability of gas mixing.

[0036] In this embodiment, in order to facilitate the installation of the shielding shell 50 and protect the structures of the cock valve 20 and the nozzle 40, connection holes 16 for installing the shielding shell 50 are arranged above and on the side of the air inlet end of the ejector tube 12; the shielding shell 50 covers the outside of the cock valve 20, the nozzle 40 and the air inlet end of the ejector tube 12.

[0037] In this embodiment, the furnace top 30 is provided with a heat concentrating ring wall 31. The heat concentrating ring wall 31 is arranged around the upper part of the outer ring gas mixing cavity 112, which can block the airflow from directly blowing towards the flame, and can gather heat, reduce the loss of heat, and improve the thermal efficiency.

[0038] Certainly, the present utility model is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A commercial fierce fire combustion system, characterized in that: include: A burner (10), a stopcock (20) and a furnace plate (30); The burner (10) is provided with a furnace base (11) and an ejector tube (12); the furnace base (11) is provided with an annular inner ring gas mixing chamber (111) and an outer ring gas mixing chamber (112); two ejector tubes (12) are arranged side by side, the gas outlet ends are respectively connected to the inner ring gas mixing chamber (111) and the outer ring gas mixing chamber (112), and the gas inlet ends are connected to the nozzle (40) of the stopcock (20); the inner ring gas mixing chamber (111) and the outer ring gas mixing chamber (112) are provided with a plurality of flame ejection ports (13); The outer ring gas mixing chamber (112) spacer ring is arranged on the outer periphery of the inner ring gas mixing chamber (111); the upper plate height of the inner ring gas mixing chamber (111) is lower than the upper plate height of the outer ring gas mixing chamber (112); and the furnace plate (30) spacer ring is arranged on the outer periphery of the outer ring gas mixing chamber (112).

2. The commercial fierce fire combustion system according to claim 1, characterized in that: A plurality of connecting ribs (14) are provided between the inner ring gas mixing cavity (111) and the outer ring gas mixing cavity (112).

3. The commercial fierce fire combustion system according to claim 2, characterized in that: The height of one end of the connecting rib (14) close to the inner ring gas mixing chamber (111) is lower than the height of the upper plate surface of the inner ring gas mixing chamber (111).

4. The commercial fierce fire combustion system according to claim 1, characterized in that: An ignition extension chamber (113) is provided between the inner ring gas mixing chamber (111) and the ejector tube (12); a plurality of ignition ports (15) are provided above the ignition extension chamber (113).

5. The commercial fierce fire combustion system according to claim 1, characterized in that: The flame-spraying port (13) is provided in two circles in the form of an annular shape on the inner edge and the outer edge above the inner annular gas mixing chamber (111); the flame-spraying port (13) is provided in two circles in the form of an annular shape on the inner edge and the outer edge above the outer annular gas mixing chamber (112).

6. The commercial fierce fire combustion system according to claim 1, characterized in that: The ejector tube (12) is provided with an air intake section (121), a contraction section (122), a flow stabilization section (123), an expansion section (124) and an extension section (125) in sequence from the air intake end to the air outlet end; the contraction section (122) is a trumpet-shaped structure with a gradually narrowing cross section, the expansion section (124) is a trumpet-shaped structure with a gradually widening cross section, and the flow stabilization section (123) is a cylindrical tube structure with a constant cross section.

7. The commercial fierce fire combustion system according to claim 1, characterized in that: Connecting holes (16) for mounting a shielding shell (50) are provided above and to the side of the air inlet end of the ejector tube (12); the shielding shell (50) is disposed on the outside of the stopcock (20), the nozzle (40) and the air inlet end of the ejector tube (12).

8. The commercial fierce fire combustion system according to claim 1, characterized in that: The furnace plate (30) is provided with an energy-gathering annular wall (31).

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