Burner capable of preventing nozzle from being blocked

Abstract

The burner comprises a gas distribution seat, the gas distribution seat is provided with a gas channel used for connecting gas and a plurality of nozzles communicated with the gas channel and used for spraying out the gas, the gas distribution seat is provided with a fire distributor, and the fire distributor is provided with a fire cover cavity with an opening in the upper end. The distributor is provided with a plurality of ejection channels which vertically extend and can be communicated with the nozzle and the fire cover cavity, a fire cover capable of covering an opening of the fire cover cavity is arranged in the fire cover cavity, the fire cover is provided with a plurality of combustion cavities with openings in the upper ends, and the side wall of the fire cover is provided with communication holes capable of being communicated with the combustion cavities and the ejection channels. During use, fuel gas is injected into the corresponding injection channels at a high speed from the input channel through the nozzles, then enters the combustion cavity from the communicating holes in the outer side wall of the fire cover and then is injected out, and in the working process, due to shielding of the fire cover, gas injection openings of the nozzles cannot be exposed in the vertical direction of an opening of the combustion cavity; dirt can be prevented from vertically falling down to block an air jet opening of the nozzle, and long-term stable work of the combustor is guaranteed.

Description

[Technical field]

[0001] The invention relates to a burner capable of preventing nozzle clogging. [Background technology]

[0002] At present, the burners of some commercial stoves are disclosed in application No. 200910144479.5, including a burner jacket, a furnace ring, a furnace core, a guide cover, a gas nozzle, an air distribution disc, a gas chamber, an air inlet pipe, etc. The furnace core is fixed on the upper inner part of the guide cover; the furnace ring is pressed on the outer edge of the upper end surface of the guide cover, the upper end surface of the gas chamber is close to the bottom of the burner jacket, and a gas pipe joint is connected thereto. The furnace core is evenly provided with furnace core through holes that penetrate from top to bottom, and the gas nozzles are evenly arranged vertically on the upper end surface of the gas chamber. The gas nozzles pass through the bottom of the burner jacket and are inserted upward into the furnace core through holes. This burner has strong firepower and heats quickly, but the gas nozzle is exposed below the fire port of the furnace ring, which easily causes some soup, oil stains, and dirt to fall into the gas nozzle hole, which will cause the gas nozzle to be blocked inside, and the gas cannot come out, making it difficult to burn.

[0003] Therefore, the present invention is just produced based on the above shortcomings. [Summary of the invention]

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a burner with anti-nozzle clogging function, so as to effectively prevent dropped objects from clogging the nozzle.

[0005] The present invention is achieved through the following technical solutions:

[0006] A burner that prevents nozzle clogging, characterized in that it includes a gas distribution seat 1, the gas distribution seat 1 is provided with a gas channel 11 for receiving gas and a plurality of nozzles 2 respectively connected to the gas channel 11 for gas ejection, the gas distribution seat 1 is provided with a flame divider 3, the flame divider 3 is provided with a fire cover cavity 31 with an upper end opening, the flame divider 3 is provided with a plurality of vertically extending injection channels 32 that can connect the nozzle 2 and the fire cover cavity 31, the fire cover cavity 31 is provided with a fire cover 4 that can cover the opening of the fire cover cavity 31, the fire cover 4 is provided with a plurality of combustion chambers 41 with upper ends opening, and the side wall of the fire cover 4 is provided with a connecting hole 421 that can connect the combustion chamber 41 with the injection channel 32.

[0007] The burner with anti-nozzle clogging as described above is characterized in that a plurality of the injection channels 32 are arranged in a circle around the ignition distributor 3 .

[0008] The burner with anti-nozzle clogging as described above is characterized in that: the injection channel 32 includes a Venturi tube section 321 whose one end is opposite to the jet outlet of the nozzle 2 and a turning section 322 connecting the Venturi tube section 321 and the combustion chamber 41, and the Venturi tube section 321 and the opening of the combustion chamber 41 are staggered in the horizontal direction.

[0009] The burner with anti-nozzle clogging as described above is characterized in that: the Venturi tube section 321 includes an inlet section 3211, a throat section 3212, a contraction section 3213 connected between the inlet section 3211 and the throat section 3212 and whose cross-sectional area gradually decreases from one end close to the inlet section 3211 to one end close to the throat section 3212, and a diffusion section 3214 connected between the throat section 3212 and the turning section 322 and whose cross-sectional area gradually increases from one end close to the throat section 3212 to one end close to the turning section 322, and the turning section 322 is in the shape of a curved tube.

[0010] The burner with nozzle blocking prevention as described above is characterized in that: the side wall of the fire cover 4 is provided with a first mesh portion 42 , and the connecting holes 421 are mesh holes distributed on the first mesh portion 42 .

[0011] The burner with anti-nozzle clogging as described above is characterized in that: the bottom of the fire cover 4 is provided with a receiving surface 43 which seals the bottom end of the combustion chamber 41 and can receive objects dropped into the combustion chamber 41 .

[0012] The burner with anti-nozzle clogging as described above is characterized in that: the bottom of the fire cover 4 is also provided with a second mesh portion 44 connected between the receiving surface 43 and the first mesh portion 42, and the second mesh portion 44 is provided with mesh holes connecting the injection channel 32 and the combustion chamber 41, and the ignition divider 4 is a torus, the first mesh portion 42 is arranged on the annular surface of the torus, and the second mesh portion 44 and the receiving surface 43 are arranged on the bottom surface of the torus.

[0013] The burner with anti-nozzle clogging as described above is characterized in that: a secondary air passage 33 capable of connecting to external air is provided in the flame distributor 3, the upper end of the secondary air passage 33 is open and extends to the middle of the fire cover cavity 31, and the lower end of the secondary air passage 33 is open and connected to one side of the air distributor seat 1.

[0014] The burner with anti-nozzle clogging as described above is characterized in that: a sleeve 45 which can be sleeved on the upper end of the secondary air channel 33 is provided in the middle of the fire cover 4, and a plurality of air distributors 46 which are evenly distributed around the sleeve 45 and divide the opening of the combustion chamber 41 into a plurality of fire holes 411 are provided in the combustion chamber 41.

[0015] The burner with anti-nozzle clogging as described above is characterized in that: the ignition divider 3 includes an inner cavity 34, an outer shell 35 fixed to the outside of the inner cavity 34 and surrounding the injection channel 32 and the fire cover cavity 31 with the inner cavity 34, the secondary air channel 33 is arranged in the inner cavity 34, and the plurality of injection channels 32 are evenly distributed between the inner cavity 34 and the outer shell 35 around the central axis of the ignition divider 3, and the plurality of nozzles 2 are correspondingly evenly distributed on the gas distributor seat 1 around the central axis of the gas distributor seat 1.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. When the present invention is used, the gas is sprayed from the input channel through each nozzle at high speed into the corresponding injection channel, and then enters the combustion chamber from the connecting hole on the outer wall of the fire cover and is sprayed out. During the operation, due to the shielding of the fire cover, the jet outlet of the nozzle will not be exposed in the vertical direction of the opening of the combustion chamber, which can prevent dirt such as soup, oil droplets and the like from falling vertically to block the jet outlet of the nozzle, thereby ensuring the long-term stable operation of the burner.

[0018] 2. The present invention makes the venturi tube section and the opening of the combustion chamber staggered in the horizontal direction through the switching of the turning section, further preventing the jet outlet of the nozzle from falling and blocking.

[0019] 3. In the present invention, a first mesh surface portion and a second mesh surface portion are provided on the ignition distributor. The gas ejected from the venturi tube to the connecting cavity at high speed first passes through the smaller mesh holes on the first mesh surface portion and the second mesh surface portion and then enters the gas outlet cavity, with uniform speed and pressure, which effectively plays a role in preventing the gas from backfire.

Brief Description of the Drawings

[0020] Figure 1 is a stereogram of the present invention;

[0021] Figure 2 is a cross-sectional view of the present invention;

[0022] Figure 3 It is a schematic diagram of the decomposed structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the decomposed structure of another direction of the present invention. [Specific implementation method]

[0024] The present invention will be further described below in conjunction with the accompanying drawings:

[0025] like Figures 1 to 4 As shown, a burner for preventing nozzle clogging comprises a gas distributor seat 1, on which a gas channel 11 for receiving gas and a plurality of nozzles 2 respectively connected with the gas channel 11 for ejecting gas are provided, a flame distributor 3 is provided on the gas distributor seat 1, a fire cover cavity 31 with an upper opening is provided on the flame distributor 3, a plurality of vertically extending injection channels 32 capable of connecting the nozzles 2 and the fire cover cavity 31 are provided on the flame distributor 3, a fire cover 4 capable of covering the opening of the fire cover cavity 31 is provided in the fire cover cavity 31, a plurality of combustion chambers 41 with upper openings are provided on the fire cover 4, and a connecting hole 421 capable of connecting the combustion chamber 41 and the injection channel 32 is provided on the side wall of the fire cover 4.

[0026] like Figure 1 As shown, a plurality of injection channels 32 are arranged in a circle around the ignition distributor 3 .

[0027] Specifically, the ejection channel 32 includes a venturi tube section 321 with one end facing the jet outlet of the nozzle 2 and a turning section 322 connecting the venturi tube section 321 and the combustion chamber 41, and the openings of the venturi tube section 321 and the combustion chamber 41 are staggered in the horizontal direction. The turning section 322 is used to transfer the venturi tube section 321 and the opening of the combustion chamber 41 to be staggered in the horizontal direction, so that the jet outlet of the nozzle 2 will not be exposed in the vertical direction of the opening of the combustion chamber 41, and dirt such as soup, oil droplets, etc. can be prevented from falling vertically to block the jet outlet of the nozzle, thereby ensuring the long-term stable operation of the burner.

[0028] Specifically, the venturi tube section 321 includes an inlet section 3211, a throat section 3212, a contraction section 3213 connected between the inlet section 3211 and the throat section 3212 and having a cross-sectional area that gradually decreases from one end close to the inlet section 3211 to one end close to the throat section 3212, and a diffusion section 3214 connected between the throat section 3212 and the turning section 322 and having a cross-sectional area that gradually increases from one end close to the throat section 3212 to one end close to the turning section 322. The turning section 322 is in the shape of a curved tube.

[0029] In the present invention, the side wall of the fire cover 4 is provided with a first mesh surface 42, and the communication holes 421 are mesh holes distributed on the first mesh surface 42. The high-speed gas ejected from the turning section 322 first passes through the smaller mesh holes on the first mesh surface 42 and then enters the combustion chamber 41, with uniform speed and pressure, which effectively plays a role in preventing the gas from backfire.

[0030] Specifically, the bottom of the fire cover 4 is provided with a receiving surface 43 that closes the bottom end of the combustion chamber 41 and can receive objects dropped into the combustion chamber 41. For example, dropped objects such as soup, oil drops, and cooking materials will fall on the receiving surface 43 after passing through the fire hole.

[0031] Specifically, the bottom of the fire cover 4 is also provided with a second mesh portion 44 connected between the receiving surface 43 and the first mesh portion 42, and the second mesh portion 44 is provided with mesh holes connecting the injection channel 32 and the combustion chamber 41. The ignition divider 4 is a torus, the first mesh portion 42 is arranged on the annular surface of the torus, the second mesh portion 44 and the receiving surface 43 are arranged on the bottom surface of the torus, and one end of the turning section 322 extends to the annular surface and the bottom surface of the torus.

[0032] like Figure 2 As shown, a secondary air passage 33 is provided in the ignition distributor 3 to connect to the outside air. The upper end of the secondary air passage 33 is open and extends to the middle of the fire cover cavity 31. The lower end of the secondary air passage 33 is open and connected to one side of the gas distributor seat 1. When the burner is working, the air around the gas distributor seat 1 can enter from the lower end of the ignition distributor 3 and be supplemented to the vicinity of the fire cover 4 through the secondary air passage 33, so that the gas burns more fully and the combustion effect is better.

[0033] The middle part of the fire cover 4 is provided with a sleeve 45 which can be sleeved on the upper end of the secondary air passage 33. A plurality of gas distributors 46 are evenly distributed around the sleeve 45 and divide the opening of the combustion chamber 41 into a plurality of fire holes 411. The gas distributor 46 divides the plurality of fire holes 411 to play the role of diverting and equalizing gas, so that a uniform flame is formed when the gas burns. The fire cover 4 is inserted into the fire cover chamber 31 to cover the opening of the fire cover chamber 31. The fire cover 4 can be easily removed for cleaning and recycling.

[0034] In the present invention, the ignition distributor 3 includes an inner cavity 34, a shell 35 fixed to the outer side of the inner cavity 34 and enclosing the injection channel 32 and the fire cover cavity 31 with the inner cavity 34, a secondary air channel 33 is arranged in the inner cavity 34, a plurality of injection channels 32 are evenly distributed between the inner cavity 34 and the shell 35 around the central axis of the ignition distributor 3, and a plurality of nozzles 2 are evenly distributed on the gas distributor seat 1 around the central axis of the gas distributor seat 1. In specific production and manufacturing, the inner cavity 34 can be welded in the shell 35.

Claims

1. A burner for preventing nozzle clogging, characterized in that: The invention comprises a gas distribution seat (1), the gas distribution seat (1) is provided with a gas channel (11) for receiving gas and a plurality of nozzles (2) respectively connected to the gas channel (11) for ejecting gas, the gas distribution seat (1) is provided with a ignition distributor (3), the ignition distributor (3) is provided with a fire cover cavity (31) with an upper end opening, the ignition distributor (3) is provided with a plurality of vertically extending injection channels (32) capable of connecting the nozzles (2) and the fire cover cavity (31), the fire cover cavity (31) is provided with a fire cover (4) capable of covering the opening of the fire cover cavity (31), the fire cover (4) is provided with a plurality of combustion cavities (41) with upper ends opening, and the side wall of the fire cover (4) is provided with a connecting hole (421) capable of connecting the combustion cavity (41) and the injection channel (32).

2. The burner with nozzle clogging prevention according to claim 1, characterized in that: The plurality of injection channels (32) are arranged in a circle around the ignition distributor (3).

3. The burner with nozzle clogging prevention according to claim 1, characterized in that: The ejection channel (32) comprises a Venturi tube section (321) whose one end is opposite to the jet outlet of the nozzle (2) and a turning section (322) connecting the Venturi tube section (321) and the combustion chamber (41); the openings of the Venturi tube section (321) and the combustion chamber (41) are staggered in the horizontal direction.

4. The burner with nozzle clogging prevention according to claim 3, characterized in that: The venturi tube section (321) comprises an inlet section (3211), a throat section (3212), a contraction section (3213) connected between the inlet section (3211) and the throat section (3212) and having a cross-sectional area that gradually decreases from one end close to the inlet section (3211) to one end close to the throat section (3212), and a diffusion section (3214) connected between the throat section (3212) and the turning section (322) and having a cross-sectional area that gradually increases from one end close to the throat section (3212) to one end close to the turning section (322), and the turning section (322) is in the shape of a curved tube.

5. The burner with nozzle clogging prevention according to claim 1, characterized in that: The side wall of the fire cover (4) is provided with a first mesh surface (42), and the connecting holes (421) are mesh holes distributed on the first mesh surface (42).

6. The burner with nozzle clogging prevention according to claim 6, characterized in that: The bottom of the fire cover (4) is provided with a receiving surface (43) which seals the bottom end of the combustion chamber (41) and can receive objects dropped into the combustion chamber (41).

7. The burner with nozzle clogging prevention according to claim 7, characterized in that: The bottom of the fire cover (4) is also provided with a second mesh surface (44) connected between the receiving surface (43) and the first mesh surface (42), and mesh holes connecting the injection channel (32) and the combustion chamber (41) are distributed on the second mesh surface (44). The ignition divider (4) is a torus, the first mesh surface (42) is arranged on the annular surface of the torus, and the second mesh surface (44) and the receiving surface (43) are arranged on the bottom surface of the torus.

8. The burner with nozzle clogging prevention according to claim 1, characterized in that: The fire distributor (3) is provided with a secondary air passage (33) that can be connected to the outside air. The upper end of the secondary air passage (33) is open and extends to the middle of the fire cover cavity (31). The lower end of the secondary air passage (33) is open and communicates with one side of the air distributor seat (1).

9. The burner with nozzle clogging prevention according to claim 8, characterized in that: A sleeve (45) is provided in the middle of the fire cover (4) and can be sleeved on the upper end of the secondary air channel (33). A plurality of air distributor plates (46) are provided in the combustion chamber (41) and are evenly distributed around the sleeve (45) and divide the opening of the combustion chamber (41) into a plurality of fire holes (411).

10. The burner with nozzle clogging prevention according to claim 9, characterized in that: The ignition divider (3) comprises an inner cavity (34), an outer shell (35) fixed to the outer side of the inner cavity (34) and enclosing the injection channel (32) and the fire cover cavity (31) together with the inner cavity (34), the secondary air channel (33) is arranged in the inner cavity (34), a plurality of the injection channels (32) are evenly distributed between the inner cavity (34) and the outer shell (35) around the central axis of the ignition divider (3), and a plurality of the nozzles (2) are evenly distributed on the gas distributor seat (1) around the central axis of the gas distributor seat (1).

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