An updraft burner

Abstract

The utility model provides a kind of upper air inlet burner, including base and fire divider, fire divider is set on base, the central position of fire divider is provided with annular inner ring combustion chamber, there is annular outer ring combustion chamber around inner ring combustion chamber on fire divider, ejector pipe is provided on fire divider, gas inlet passage is connected on base, the end of gas inlet passage is provided with nozzle;Between the top of base and the bottom of fire divider there is gas supplement cavity, nozzle and ejector pipe are communicated by gas supplement cavity, the bottom of base is provided with gas supplement through-hole, gas supplement through-hole and ejector pipe are communicated by gas supplement cavity, the gas inlet of gas supplement through-hole is located at the bottom of base, so that air on the outside directly enters gas supplement cavity to supplement oxygen by the bottom of base, the gas outlet of nozzle and gas supplement through-hole is all opposite with the inlet of ejector pipe.

Description

Technical Field

[0001] This utility model relates to the field of gas stoves, and in particular to an upward air intake burner. Background Technology

[0002] A top-intake burner is a burner in which the air required for combustion mainly enters from above the cooktop panel. The air in a top-intake burner is drawn in through openings or gaps in the panel and then mixed with the gas ejected from the nozzle at the end of the gas delivery pipe. The mixed gas emerges from the flame holes of the burner cap and is ignited by the ignition needle to form a stable flame.

[0003] To prevent spilled liquids, food scraps, and grime from accumulating inside the machine, and to keep the stove clean, top-intake burners require a water tray installed between the stove panel and the burner. This water tray further blocks openings or gaps on the panel, further limiting the amount of air intake. The presence of the water tray weakens these main air passages, making the airflow even more limited. Top-intake burners rely on gaps around the water tray for air intake. If the water tray is not installed properly, is completely sealed, or the gaps are blocked, insufficient air supply to the burner will result in incomplete combustion problems such as yellow or red flames, wasting fuel and producing harmful carbon monoxide. This requires highly skilled installation and manufacturing personnel.

[0004] The principle behind air intake via the injector is that the high-speed combustion gas ejected from the nozzle generates negative pressure due to the Venturi effect, thus naturally drawing air from above the burner into the injector. Since the amount of air drawn in by the injector depends on the intensity of the negative pressure, a longer injector results in a stronger injection capability; the length of the injector has a significant impact on the injection capability.

[0005] For top-intake burners in stoves, there are two main types based on the placement direction of the ejector tubes: one type has vertically placed ejector tubes, which can be a single tube, and the flame is divided into an outer ring and an inner ring by a flame divider. The advantage of vertical ejector tubes is that the ejector tubes are very long and there are fewer ejector tubes. However, in order to ensure the ejection capacity of the ejector tubes, the overall height of the burner cannot be made thinner, resulting in a larger burner volume and occupying more space. The other type has horizontally placed ejector tubes, which are divided into outer rings and inner rings, or outer rings, middle rings, and inner rings. Multiple ejector tubes are connected to the burner cap, which allows the overall height of the burner to be made thinner.

[0006] Compared to top-intake burners with vertically placed ejector tubes and bottom-intake burners, top-intake burners with horizontally placed ejector tubes are structurally limited. Without increasing the overall height or width of the burner, the length of the horizontal ejector tube is very short. The short ejector tube results in insufficient negative pressure and insufficient ejection capacity of outside air. The limited amount of ejected air leads to uneven combustion flames and is prone to excessive carbon monoxide, thus polluting the environment around the stove. Utility Model Content

[0007] Therefore, it is necessary to provide a top-inlet burner.

[0008] To solve the above-mentioned technical problems, this utility model provides an upper-intake burner, including a base and a distributor. The distributor is disposed on the base, and an annular inner ring combustion chamber is disposed at the center of the distributor. An annular outer ring combustion chamber is disposed around the inner ring combustion chamber on the distributor. An ejector tube is disposed on the distributor. A gas intake channel is connected to the base, and a nozzle is disposed at the end of the gas intake channel. A gas supply chamber is provided between the top of the base and the bottom of the distributor. The nozzle and the ejector tube communicate through the gas supply chamber. A gas supply through-hole is disposed at the bottom of the base. The gas supply through-hole communicates with the ejector tube through the gas supply chamber. The inlet of the gas supply through-hole is located at the bottom of the base, so that the outside air directly enters the gas supply chamber through the bottom of the base for oxygen supply. The outlets of the nozzle and the gas supply through-hole are directly opposite the inlet of the ejector tube.

[0009] Preferably, the flame distributor includes an inner ring and an outer ring with an inner cavity, the inner ring combustion chamber being the inner cavity of the inner ring, the outer ring combustion chamber being the inner cavity of the outer ring, the ejector tube including an inner ring ejector tube and an outer ring ejector tube, the inner ring and the outer ring being connected as a whole through the inner ring ejector tube and the outer ring ejector tube, the inner ring ejector tube communicating with the inner ring combustion chamber, and the outer ring ejector tube communicating with the outer ring combustion chamber.

[0010] Preferably, the inner ring ejector tube and the outer ring ejector tube are both located side by side between the base and the fire distributor, and the extension direction of the inner ring ejector tube is parallel to the extension direction of the outer ring ejector tube.

[0011] Preferably, it further includes a reinforcing connecting rod connecting the inner ring and the outer ring, wherein the reinforcing connecting rod and the inner ring ejector tube are on the same extension line.

[0012] Preferably, the nozzle is installed on the side wall at the top of the gas intake channel, so that the nozzle is directly opposite the ejector tube. The gas supply hole is parallel to the gas intake channel, and the outlet of the gas supply hole is located on the periphery of the nozzle, so that the outlet of the gas supply hole is directly opposite the ejector tube.

[0013] Preferably, the base is provided with an arc-shaped anti-fouling step around the air outlet of the air supply hole, the air outlet of the air supply hole is located directly below the nozzle, the nozzle covers the area of ​​the anti-fouling step, and the nozzle is located directly below the outer ring.

[0014] Preferably, an outer ring ignition cover is fitted over the opening of the outer ring combustion chamber, and the bottom outer edge of the outer ring ignition cover covers the outer ring. An integrated baffle is provided at the position of the igniter in the outer ring combustion chamber. The integrated baffle divides the outer ring combustion chamber into a combustion chamber close to the inner ring and a gas equalization chamber away from the inner ring. There is a gap between the top surface of the integrated baffle and the inner bottom surface of the outer ring ignition cover, and the gap connects the combustion chamber and the gas equalization chamber.

[0015] Preferably, the integrated baffle is located on both sides of the air outlet of the outer ring ejector tube. The integrated baffle includes a first side baffle and a second side baffle aligned with the air outlet of the outer ring ejector tube as the center. The integrated baffle is an arc-shaped plate.

[0016] Preferably, the curvature of the integrated baffle is adapted to the curvature of the outer ring combustion chamber wall, the arc length of the integrated baffle is in the range of 50-120mm, the gap is in the range of 2-3mm, and the inner ring combustion chamber is covered with an inner ring flame spreader.

[0017] The beneficial effects of this utility model are as follows: The top-inlet burner of this application, through the structural cooperation of the injector tube of the flame distributor, the inner and outer ring combustion chambers and the base, allows for the hidden installation of an air supply hole below the nozzle. The air supply hole surrounds the nozzle 360° to allow air to enter and supplement oxygen, thereby increasing the primary air supply of the burner. By improving the base structure of the burner and correspondingly changing the structure of the flame distributor, the primary air injection volume of the burner is enhanced, the combustion efficiency of the gas is improved, the gas is fully combusted, and carbon monoxide emissions are reduced, which has the advantages of reducing energy consumption and being environmentally friendly. Attached Figure Description

[0018] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this invention.

[0019] Figure 1 A perspective view of the burner from the top surface of a preferred embodiment of this utility model;

[0020] Figure 2 for Figure 1 A cross-sectional view taken at point AA' in the middle;

[0021] Figure 3 for Figure 1 A cross-sectional view taken at point DD' in the middle;

[0022] Figure 4 This is a perspective view of the burner from a side view of a preferred embodiment of the present invention;

[0023] Figure 5 This is a perspective view of the fire distributor according to a preferred embodiment of the present invention;

[0024] Figure 6 This is a perspective view of the fire distributor according to a preferred embodiment of the present invention.

[0025] Figure 7 This is a perspective view of the base of a preferred embodiment of the present invention;

[0026] In the diagram: 1. Base; 2. Ignition distributor; 3. Inner ring combustion chamber; 4. Outer ring combustion chamber; 5. Injector tube; 51. Inner ring injection tube; 52. Outer ring injection tube; 6. Reinforcing connecting rod; 7. Gas intake passage; 8. Nozzle; 9. Air supply chamber; 10. Air supply through hole (inlet of air supply through hole; outlet of air supply through hole); 11. Side wall position at the top of the gas intake passage; 12. Anti-fouling step; 13. Outer ring ignition cover; 14. Integrated baffle; 15. Gap; 16. Combustion chamber; 17. Gas equalization chamber; 18. Outer ring injection tube outlet; 19. Inner ring ignition cover; 20. Outer ring injection tube outlet. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0028] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] refer to Figures 1-7 This utility model provides an upper air intake burner, including a base 1 and a burner 2. The burner 2 is disposed on the base 1. An annular inner ring combustion chamber 3 is disposed at the center of the burner 2. An annular outer ring combustion chamber 4 is disposed around the inner ring combustion chamber on the burner 2. An ejector tube 5 is disposed on the burner. A gas intake channel 7 is connected to the base 1. A nozzle 8 is disposed at the end of the gas intake channel 7. A gas replenishment chamber 9 is provided between the top of the base 1 and the bottom of the burner 2. The nozzle 8 and the ejector tube 5 are connected through the gas replenishment chamber 9. A gas replenishment hole 10 is disposed at the bottom of the base. The gas replenishment hole 10 is connected to the ejector tube 5 through the gas replenishment chamber 9. The air inlet of the gas replenishment hole 10 is located at the bottom of the base 1, so that the air from the outside can directly enter the gas replenishment chamber 9 through the bottom of the base 1 and be drawn into the ejector tube 5 for oxygen replenishment. The outlets of the nozzle 8 and the gas replenishment hole are directly opposite the inlet of the ejector tube.

[0031] In this application, the outer and inner ring burner caps of the top-intake burner are riveted to the flame distributor 2 and placed on the base 1. A gas supply hole 10 is located below the nozzle 8 on the base 1, and this gas supply hole 10 is identical to the one inside the gas stove, allowing primary air to be supplied to the nozzle 8. By improving the burner's base structure and correspondingly changing the structure of the flame distributor, the primary air injection volume of the burner can be increased, combustion efficiency improved, and carbon monoxide emissions reduced.

[0032] In a preferred embodiment, the flame distributor 2 includes an inner ring and an outer ring with an inner cavity. The inner ring combustion chamber 3 is the inner cavity of the inner ring, and the outer ring combustion chamber 4 is the inner cavity of the outer ring. The ejector tube 5 includes an inner ring ejector tube 51 and an outer ring ejector tube 52. The inner ring and the outer ring are connected as a whole by the inner ring ejector tube 51 and the outer ring ejector tube 52. The inner ring ejector tube 51 is connected to the inner ring combustion chamber 3, and the outer ring ejector tube 52 is connected to the outer ring combustion chamber 4.

[0033] In a preferred embodiment, the inner ring ejector tube 51 and the outer ring ejector tube 52 are both located side by side between the base 1 and the fire distributor 2, and the extension direction of the inner ring ejector tube 51 is parallel to the extension direction of the outer ring ejector tube 52.

[0034] In a preferred embodiment, a reinforcing connecting rod 6 is also included to connect the inner ring and the outer ring. The reinforcing connecting rod 6 and the inner ring ejector tube 51 are on the same extension line.

[0035] In a preferred embodiment, the nozzle 8 is installed on the side wall at the top of the gas intake channel 7, so that the nozzle 8 is directly opposite the ejector tube 5. The gas supply hole 10 is arranged parallel to the gas intake channel 7, and the outlet of the gas supply hole 10 is located directly below the nozzle 8, so that the outlet of the gas supply hole 10 is directly opposite the ejector tube.

[0036] In a preferred embodiment, an arc-shaped anti-fouling step 12 is provided around the air outlet of the air supply hole 10 on the base 1. The air outlet of the air supply hole 10 is located directly below the nozzle 8. The nozzle 8 covers the area of ​​the anti-fouling step 12, serving as a shield to prevent liquid from overflowing from above. The nozzle 8 is located directly below the outer ring, which also shields the nozzle 8. Addressing the limitation of current top-intake burners on the market, which cannot implement this concealed air supply structure due to structural constraints, this application's solution conceals the air supply hole directly below the nozzle 8. The air supply hole 10 surrounds the nozzle 360°, allowing air to enter and replenish oxygen, thereby improving the primary air intake. Simultaneously, to address the issue of cooking liquid overflow during actual use, a step is provided at the air supply hole location. The anti-fouling step 12 prevents wastewater and other liquids from flowing in and into the stove.

[0037] In a preferred embodiment, an outer ring flame spreader cover 13 covers the opening of the outer ring combustion chamber 4. The bottom outer edge of the outer ring flame spreader cover 13 covers a portion of the side surface of the outer ring. An integrated baffle 14 is provided at the position of the flame spreader 2 in the outer ring combustion chamber 13. The integrated baffle 14 is integrally set with the flame spreader 2 and does not require component connection. The integrated baffle 14 divides the outer ring combustion chamber 13 into a combustion chamber 16 closer to the inner ring and a gas equalization chamber 17 farther from the inner ring. There is a gap 15 between the top surface of the integrated baffle 14 and the inner bottom surface of the outer ring flame spreader cover 13, and the gap 15 connects the combustion chamber 16 and the gas equalization chamber 17. In the prior art, in order to ensure flame uniformity, a baffle is usually added at the outlet of the ejector tube. This not only increases the number of parts and reduces installation efficiency, but also increases costs. To address the aforementioned problems in the prior art, this application incorporates an integrated baffle 14, eliminating the need for additional components. When the outer ring ejector tube 52 draws in the gas mixture, the gas mixture first enters the gas equalization chamber 17 through the outlet 20 of the outer ring ejector tube. A portion of the gas mixture in the gas equalization chamber 17 enters the combustion chamber 16 through the gap 15. The remaining gas mixture in the gas equalization chamber 17 continues to diffuse towards the end of the outer ring combustion chamber 13 away from the outlet 20 of the outer ring ejector tube, ensuring the uniformity of the gas mixture in the outer ring combustion chamber 13 and achieving the goal of flame uniformity.

[0038] In a preferred embodiment, the integrated baffle 14 is located on both sides of the outer ring ejector outlet 20. The integrated baffle 14 includes a first side baffle and a second side baffle aligned with the outer ring ejector outlet as the center. The integrated baffle is an arc-shaped plate.

[0039] In a preferred embodiment, the curvature of the integrated baffle 14 is adapted to the curvature of the outer ring combustion chamber 52, so that the width of the outer ring combustion chamber 52 is uniform at all points. The arc length of the integrated baffle 14 is in the range of 50-120mm, the gap distance is in the range of 2-3mm, and the inner ring combustion chamber is also covered with an inner ring flame spreader.

[0040] A first opening is provided on the side wall of the inner ring combustion chamber 3, and a second opening is provided on the side wall of the outer ring combustion chamber 4. The inner ring ejector tube 51 communicates with the inner ring combustion chamber 3 through the first opening, and the outer ring ejector tube 52 communicates with the outer ring combustion chamber 4 through the second opening, which is also the air outlet 20 of the outer ring ejector tube. By supplementing air, this application can ensure complete combustion of the fuel gas even if the inner ring ejector tube 51 and the outer ring ejector tube 52 are arranged completely horizontally.

[0041] When the top-intake burner is applied to a stove, the stove panel is provided with an installation window, a water tray is installed in the installation window, the water tray is provided with an installation groove, the top-intake burner is installed in the installation groove, the base is fixed on the water tray, the base is located below the stove panel and the water tray, and the inner ring flame spreader and the outer ring flame spreader are located above the water tray.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A top-inlet burner, characterized in that, The device includes a base and a burner. The burner is mounted on the base and has an inner annular combustion chamber at its center. An outer annular combustion chamber surrounds the inner annular combustion chamber on the burner. An injector is mounted on the burner. A gas intake channel is connected to the base, and a nozzle is located at the end of the gas intake channel. A gas supply chamber is located between the top of the base and the bottom of the burner. The nozzle and the injector communicate through the gas supply chamber. A gas supply through-hole is located at the bottom of the base and communicates with the injector through the gas supply chamber. The inlet of the gas supply through-hole is located at the bottom of the base, allowing outside air to directly enter the gas supply chamber for oxygen supply. The outlets of the nozzle and the gas supply through-hole are directly opposite the inlet of the injector.

2. The top-inlet burner as described in claim 1, characterized in that, The flame distributor includes an inner ring and an outer ring, each having an inner cavity. The inner ring combustion chamber is the inner cavity of the inner ring, and the outer ring combustion chamber is the inner cavity of the outer ring. The ejector tube includes an inner ring ejector tube and an outer ring ejector tube. The inner ring and the outer ring are connected as a whole through the inner ring ejector tube and the outer ring ejector tube. The inner ring ejector tube communicates with the inner ring combustion chamber, and the outer ring ejector tube communicates with the outer ring combustion chamber.

3. The top-inlet burner as described in claim 2, characterized in that, The inner ring ejector tube and the outer ring ejector tube are both located side by side between the base and the fire distributor, and the extension direction of the inner ring ejector tube is parallel to the extension direction of the outer ring ejector tube.

4. The top-inlet burner as described in claim 3, characterized in that, It also includes a reinforcing connecting rod that connects the inner ring and the outer ring, the reinforcing connecting rod being on the same extension line as the inner ring ejector tube.

5. The top-inlet burner as described in claim 2, characterized in that, The nozzle is installed on the side wall at the top of the gas intake channel, so that the nozzle is directly opposite the ejector tube. The gas supply hole is parallel to the gas intake channel, and the outlet of the gas supply hole is located on the periphery of the nozzle, so that the outlet of the gas supply hole is directly opposite the ejector tube.

6. The top-inlet burner as described in claim 5, characterized in that, The base is provided with an arc-shaped anti-fouling step around the air outlet of the air supply hole. The air outlet of the air supply hole is located directly below the nozzle. The nozzle covers the area of ​​the anti-fouling step and is located directly below the outer ring.

7. The top-inlet burner as described in claim 1, characterized in that, An outer ring ignition cover is fitted over the opening of the outer ring combustion chamber. The bottom outer edge of the outer ring ignition cover covers the outer ring. An integrated baffle is provided at the position of the igniter in the outer ring combustion chamber. The integrated baffle divides the outer ring combustion chamber into a combustion chamber close to the inner ring and a gas equalization chamber away from the inner ring. There is a gap between the top surface of the integrated baffle and the inner bottom surface of the outer ring ignition cover. The gap connects the combustion chamber and the gas equalization chamber.

8. The top-inlet burner as described in claim 7, characterized in that, The integrated baffle is located on both sides of the air outlet of the outer ring ejector tube. The integrated baffle includes a first side baffle and a second side baffle aligned with the air outlet of the outer ring ejector tube as the center. The integrated baffle is an arc-shaped plate.

9. The top-inlet burner as described in claim 8, characterized in that, The curvature of the integrated baffle is adapted to the curvature of the outer ring combustion chamber wall. The arc length of the integrated baffle ranges from 50 to 120 mm, the gap ranges from 2 to 3 mm, and the inner ring combustion chamber is covered by an inner ring flame spreader.

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