Vertical double air passage updraft burner

Abstract

The application discloses a vertical double-air-channel upper air inlet burner, comprising a base and a gas distribution disc assembly; the base comprises a center mounting seat and a gas supply seat; a center connecting column can be inserted into and clamped in the center mounting seat; the outer ring gas inlet end of an outer ring injection channel and the center gas inlet end of a center injection channel are vertically staggered; the gas supply seat is provided with a gas supply port for mounting a gas nozzle; the gas supply port is vertically staggered to correspond to the center gas inlet end and the outer ring gas inlet end. The gas distribution disc assembly and the base are simple in structure and small in size; the stove panel or the water disc only needs to be provided with an avoiding structure of the center mounting seat and the gas supply seat, so that the installation and arrangement requirements of the gas distribution disc assembly can be met, the overall installation and arrangement of the stove is simple, and the production cost is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of burner technology, and in particular to a vertical dual-air-channel top-inlet burner. Background Technology

[0002] Top-intake burners draw both primary and secondary air from the top of the cooktop panel, allowing for a fully sealed chassis. Compared to traditional bottom-intake burners, top-intake burners are not only safer but also effectively prevent flameout caused by opening or closing cabinet doors. For example, patent number CN201821789997.3 discloses a top-intake burner and a cooktop using it.

[0003] However, the gas distribution plate of this type of burner has corresponding injection channels for the outer ring flame and the center flame. These injection channels are usually arranged on the same plane, so the air inlet ends of the injection channels are laterally offset in the plane, and the nozzles of the corresponding air inlet ends of the burner base need to be staggered. At the same time, the connection and positioning structure between the gas distribution plate and the burner base, as well as the arrangement of the ignition needle and thermocouple, often require corresponding clearance grooves to be opened in the cooktop panel or water pan. This results in more structures for the burner base to extend beyond the cooktop panel, and also requires more clearance structures in the cooktop panel or water pan. This is not conducive to simplifying the overall structure of the top-intake burner, and the installation and layout of the stove are subject to more constraints, making it difficult to reduce production costs. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a vertical dual-air-channel top-intake burner.

[0005] One embodiment of the present invention adopts a technical solution to solve its technical problem as follows: a vertical dual-airway top-inlet burner, comprising: a base and an air distribution plate assembly;

[0006] The gas distribution plate assembly includes an outer ring mixing chamber, a central mixing chamber, an outer ring ejector channel, a central ejector channel, and a central connecting post; the outer ring mixing chamber is connected to the outer ring ejector channel; the central mixing chamber is connected to the central ejector channel; and the central connecting post is located below the gas distribution plate assembly.

[0007] The base includes a central mounting base and a gas supply base; the central connecting column can be inserted into and locked into the central mounting base; the outer ring air inlet end of the outer ring ejector channel and the central air inlet end of the central ejector channel are vertically offset; the gas supply base is provided with a gas supply port for installing a gas nozzle; the gas supply port is vertically offset to correspond to the central air inlet end and the outer ring air inlet end.

[0008] The air distribution plate assembly includes an air distribution plate body and an air distribution plate bottom cover that can be disassembled and assembled vertically; a partition plate is provided between the air distribution plate body and the air distribution plate bottom cover; the partition plate is a stainless steel metal sheet.

[0009] Optionally, the outer ring ejector channel and the outer ring air inlet are disposed on the bottom cover of the air distributor; the central ejector channel and the central air inlet are disposed on the main body of the air distributor plate.

[0010] Optionally, the outer ring ejector channel is open at the top, and the central ejector channel is open at the bottom; the separator is used to separate the outer ring ejector channel from the central ejector channel.

[0011] Optionally, the extension directions of the outer ring ejector channel and the central ejector channel overlap vertically.

[0012] Optionally, both the outer ring ejector channel and the central ejector channel are configured as Venturi tubes.

[0013] Optionally, the outer ring ejector channel is provided with an arc-shaped output channel at its end; the cross-section of the arc-shaped output channel gradually expands from bottom to top and connects the outer ring ejector channel and the outer ring mixing chamber.

[0014] Optionally, the air distribution plate assembly is further provided with a flow diversion baffle; the flow diversion baffle is disposed above the arc-shaped output channel and has a plurality of flow diversion holes.

[0015] Optionally, the central connecting column and the central mounting base are provided with a matching guide and positioning structure.

[0016] Optionally, the base is further provided with an ignition needle and a thermocouple; the ignition needle and the thermocouple are located on opposite sides of the central mixing chamber; the gas distribution plate assembly is provided with clearance notches corresponding to the ignition needle and the thermocouple.

[0017] The beneficial effects of this invention are as follows: the exposed structure with the base facing upwards consists only of a central mounting base and a gas supply base; the gas distribution plate assembly can be connected and fixed to the base simply by inserting and locking the central connecting post into the central mounting base; furthermore, the outer ring air inlet end of the outer ring ejector channel and the central air inlet end of the central ejector channel are vertically offset, and the gas supply port is vertically offset to correspond to the central air inlet end and the outer ring air inlet end; the exposed gas supply base only requires a narrow vertical space to meet the arrangement requirements of the gas nozzles of the outer ring ejector channel and the central ejector channel. This invention features a simple and compact structure for the gas distribution plate assembly and its base. Only a central mounting base and a gas supply base need to be provided on the cooktop panel or water tray to accommodate the gas distribution plate assembly's installation requirements. This simplifies the overall cooktop layout and effectively reduces production costs. Furthermore, the use of a separator structure, serving as a sandwich structure between the upper and lower gas channels, separates the upper and lower injection channels into independent outer ring injection channels and a central injection channel. The stainless steel sheet exhibits strong corrosion resistance and a low thermal conductivity, providing excellent heat insulation and preventing heat transfer from the gas distribution plate assembly to the base, thus protecting the components below the cooktop.

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the upper air intake burner of the present invention;

[0021] Figure 2 for Figure 1 Exploded view of the upper and middle air intake burner;

[0022] Figure 3 for Figure 1 Another exploded view of the upper-middle air intake burner;

[0023] Figure 4 for Figure 1 Cross-sectional view of the upper and middle air intake burner.

[0024] Explanation of key component symbols:

[0025] 10. Base; 11. Center mounting base; 12. Air supply base; 13. Air supply port; 20. Gas distributor assembly; 21. Outer ring mixing chamber; 22. Center mixing chamber; 23. Outer ring ejector channel; 24. Center ejector channel; 25. Center connecting column; 26. Gas distributor body; 27. Gas distributor bottom cover; 28. Divider plate; 29. ​​Arc-shaped output channel; 30. Diverter baffle; 40. Ignition needle; 50. Thermocouple. Detailed Implementation

[0026] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0027] In the description of this invention, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this invention, it should be understood that 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 invention 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 limiting this invention.

[0029] In this invention, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integrally formed connection; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0030] Example

[0031] Reference Figures 1 to 4 The present invention proposes a vertical dual-airway top-inlet burner, comprising: a base 10 and an air distribution plate assembly 20;

[0032] The gas distributor assembly 20 is provided with an outer ring mixing chamber 21, a central mixing chamber 22, an outer ring ejector channel 23, a central ejector channel 24, and a central connecting post 25; the outer ring mixing chamber 21 is connected to the outer ring ejector channel 23; the central mixing chamber 22 is connected to the central ejector channel 24; and the central connecting post 25 is located below the gas distributor assembly 20.

[0033] The base 10 includes a central mounting base 11 and a gas supply base 12; the central connecting column 25 can be inserted into and locked in the central mounting base 11; the outer ring air inlet end of the outer ring ejector channel 23 and the central air inlet end of the central ejector channel 24 are vertically offset; the gas supply base 12 is provided with a gas supply port 13 for installing a gas nozzle; the gas supply port 13 is vertically offset to correspond to the central air inlet end and the outer ring air inlet end;

[0034] The air distribution plate assembly 20 includes an air distribution plate body 26 and an air distribution bottom cover 27 that can be disassembled and assembled vertically; a partition plate 28 is provided between the air distribution plate body 26 and the air distribution bottom cover 27; the partition plate 28 is a stainless steel metal sheet.

[0035] In this invention, the exposed structure of the base 10 facing upwards consists only of the central mounting base 11 and the gas supply base 12; the gas distribution plate assembly 20 can be connected and fixed to the base 10 simply by inserting and locking the central connecting post 25 into the central mounting base 11; furthermore, the outer ring air inlet end of the outer ring ejector channel 23 and the central air inlet end of the central ejector channel 24 are vertically offset, and the gas supply port 13 is vertically offset to correspond to the central air inlet end and the outer ring air inlet end; the exposed gas supply base 12 only requires a narrow vertical space to meet the arrangement requirements of the gas nozzles of the outer ring ejector channel 23 and the central ejector channel 24. The present invention features a simple and compact structure for the gas distribution plate assembly 20 and the base 10. The stove panel or water pan only needs to have a center mounting base 11 and a gas supply base 12 to avoid the installation and arrangement requirements of the gas distribution plate assembly 20. The overall stove layout is simple and the production cost is effectively reduced. The separator 28 is used as a sandwich structure for the upper and lower gas channels to separate the upper and lower injection channels into an independent outer ring injection channel 23 and a central injection channel 24. The stainless steel sheet has strong corrosion resistance and low thermal conductivity, which has excellent heat insulation and heat resistance effect. It can effectively prevent the heat above the gas distribution plate assembly 20 from being transferred to the base 10 and affecting the components below the stove.

[0036] In this embodiment, to facilitate the assembly and processing of the internal channel structure of the air distribution plate, the air distribution plate assembly 20 is configured as a split structure. The air distribution plate assembly 20 includes an air distribution plate body 26 and an air distribution bottom cover 27 that can be disassembled and assembled vertically; an outer ring ejector channel 23 and an outer ring air inlet are disposed on the air distribution bottom cover 27; and a central ejector channel 24 and a central air inlet are disposed on the air distribution plate body 26.

[0037] Specifically, to facilitate the installation of the burner cap, both the outer ring mixing chamber 21 and the central mixing chamber 22 are located on the main body of the gas distribution plate 26, and are provided with openings at the top.

[0038] In this embodiment, a separator 28 is provided between the main body 26 of the air distribution plate and the bottom cover 27 of the air distribution plate; the upper part of the outer ring ejector channel 23 is open, and the lower part of the central ejector channel 24 is open; the separator 28 is used to separate the outer ring ejector channel 23 from the central ejector channel 24. By leaving the upper part of the outer ring ejector channel 23 open and the lower part of the central ejector channel 24 open, there is no need to seal the ejector channels, which facilitates the processing and manufacturing of the outer ring ejector channel 23 and the central ejector channel 24; then, the separator 28 structure is used as a sandwich structure for the upper and lower air passages, separating the upper and lower ejector channel structures into the independent outer ring ejector channel 23 and the central ejector channel 24, which is simple and ingenious.

[0039] Furthermore, the separator 28 is made of stainless steel. Stainless steel has strong corrosion resistance and low thermal conductivity, providing excellent heat insulation and preventing heat from being transferred from the gas distribution plate assembly 20 to the base 10, thus affecting the components below the stove.

[0040] In this embodiment, the outer ring ejector channel 23 and the central ejector channel 24 extend vertically and overlap vertically. This overlapping extension arrangement allows for the simultaneous supply of fuel to both the outer ring ejector channel 23 and the central ejector channel 24 by setting gas nozzles in the same vertical space, effectively reducing the size of the gas supply seat 12.

[0041] In this embodiment, both the outer ring ejector channel 23 and the central ejector channel 24 are configured with a Venturi tube structure. The Venturi tube structure can improve the air coefficient of the ejector channel and improve combustion efficiency.

[0042] In some embodiments, the outer ring ejector channel 23 is provided with an arc-shaped output channel 29 at its end; the cross-section of the arc-shaped output channel 29 gradually expands from bottom to top and connects the outer ring ejector channel 23 and the outer ring mixing chamber 21. The gradually expanding trumpet-shaped arc-shaped output channel 29 allows the gas from the outer ring ejector channel 23 to be released radially into the outer ring mixing chamber 21, further improving the mixing effect of gas and air.

[0043] Furthermore, the gas distribution plate assembly 20 is also provided with a flow diversion baffle 30; the flow diversion baffle 30 is located above the arc-shaped output channel 29 and has several flow diversion holes. The flow diversion baffle 30 can prevent the outer ring gas from being directly delivered to the burner, so that the outer ring gas can be evenly diffused and mixed in the outer ring mixing chamber 21 before being delivered to the burner, thereby improving the mixing effect of the outer ring gas and air.

[0044] In this embodiment, in order to achieve the orientation of the limiting alignment base 10 and the air distribution plate assembly 20, the central connecting column 25 and the central mounting base 11 are provided with matching guide positioning structures.

[0045] In this embodiment, the base 10 is also provided with an ignition needle 40 and a thermocouple 50; the ignition needle 40 and the thermocouple are located on opposite sides of the central mixing chamber 22; the gas distribution plate assembly 20 is provided with clearance notches corresponding to the ignition needle 40 and the thermocouple. By integrating the ignition needle 40 and the thermocouple 50 on opposite sides of the central mounting base 11 of the base 10, that is, on opposite sides of the central mixing chamber 22, the outer edge plate structure of the central mounting base 11 can be used to complete the installation of the ignition needle 40 and the thermocouple 50; the overall structure of the base 10 is simple and ingenious.

[0046] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A vertical dual-airflow top-intake burner, characterized in that, include: Base (10) and air distribution plate assembly (20); The gas distribution plate assembly (20) is provided with an outer ring mixing chamber (21), a central mixing chamber (22), an outer ring ejector channel (23), a central ejector channel (24), and a central connecting post (25); the outer ring mixing chamber (21) is connected to the outer ring ejector channel (23); the central mixing chamber (22) is connected to the central ejector channel (24); the central connecting post (25) is located below the gas distribution plate assembly (20); The base (10) includes a central mounting base (11) and a gas supply base (12); the central connecting column (25) can be inserted into and locked in the central mounting base (11); the outer ring air inlet of the outer ring ejector channel (23) and the central air inlet of the central ejector channel (24) are vertically offset; the gas supply base (12) is provided with a gas supply port (13) for installing a gas nozzle; the gas supply port (13) is vertically offset to correspond to the central air inlet and the outer ring air inlet; The air distribution plate assembly (20) includes an air distribution plate body (26) and an air distribution bottom cover (27) that can be disassembled and assembled vertically; a partition plate (28) is provided between the air distribution plate body (26) and the air distribution bottom cover (27); the partition plate (28) is a stainless steel metal sheet; The outer ring ejector channel (23) and the outer ring air inlet are disposed on the bottom cover of the air distribution plate (27); the central ejector channel (24) and the central air inlet are disposed on the main body of the air distribution plate (26); the upper part of the outer ring ejector channel (23) is open, and the lower part of the central ejector channel (24) is open; the separator (28) is used to separate the outer ring ejector channel (23) from the central ejector channel (24).

2. The vertical dual-air-channel top-inlet burner according to claim 1, characterized in that: The extension directions of the outer ring ejector channel (23) and the central ejector channel (24) overlap vertically.

3. The vertical dual-air-channel top-inlet burner according to claim 1, characterized in that: Both the outer ring ejector channel (23) and the central ejector channel (24) are configured as Venturi tubes.

4. The vertical dual-air-channel top-inlet burner according to claim 1, characterized in that: The outer ring ejector channel (23) has an arc-shaped output channel (29) at its end; the cross-section of the arc-shaped output channel (29) gradually expands from bottom to top and connects the outer ring ejector channel (23) and the outer ring mixing chamber (21).

5. The vertical dual-air-channel top-inlet burner according to claim 4, characterized in that: The air distribution plate assembly (20) is also provided with a flow diversion baffle (30); the flow diversion baffle (30) is located above the arc-shaped output channel (29) and has several flow diversion holes.

6. The vertical dual-air-channel top-inlet burner according to claim 1, characterized in that: The central connecting column (25) and the central mounting base (11) are provided with matching guide and positioning structures.

7. The vertical dual-air-channel top-inlet burner according to claim 1, characterized in that: The base (10) is also provided with an ignition needle (40) and a thermocouple (50); the ignition needle (40) and the thermocouple are located on opposite sides of the central mixing chamber (22); the gas distribution plate assembly (20) is provided with clearance notches corresponding to the ignition needle (40) and the thermocouple.

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