Direct injection burner and furnace end with same

Abstract

The utility model relates to a direct injection burner which comprises a direct injection channel, a direct injection nozzle is arranged below the direct injection channel, a water retaining block is arranged above the direct injection nozzle, the vertical projection of the water retaining block covers the upper end of the direct injection nozzle, and a distance is formed between the water retaining block and the upper end of the direct injection nozzle. Liquid overflowing from cookware above the direct injection nozzle cannot directly fall to the air outlet end of the direct injection nozzle, and the situation that the air outlet end of the direct injection nozzle is blocked, and consequently the combustion effect of the furnace end is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gas equipment, in particular to a direct injection burner and a burner head having the same. Background Art

[0002] In the existing direct-injection burner, after the gas and air enter the burner body and mix, the outlet of the nozzle directly sprays the mixed gas outlet above the burner body, and ignites and burns through the ignition needle to form a flame. Since the gas is directly injected, the resistance encountered by the gas during the injection process is small, which has the two advantages of saving fuel and strong combustion power, and is therefore increasingly popular among consumers.

[0003] However, during the use of the burner, liquid may easily fall onto the nozzle due to overflowing pot, etc., and the nozzle may be easily clogged due to long-term use, thereby reducing the combustion effect of the burner.

[0004] Therefore, further improvements are needed. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and to provide a direct injection burner and a burner head having the same, which can effectively prevent the direct injection nozzle from being blocked and ensure the combustion effect of the burner head.

[0006] The purpose of the utility model is achieved in this way:

[0007] A direct injection burner comprises a direct injection channel, a straight nozzle is arranged below the direct injection channel, a water retaining block is arranged above the straight nozzle, a vertical projection of the water retaining block covers the upper end of the straight nozzle, and a distance is formed between the water retaining block and the upper end of the straight nozzle.

[0008] As a specific solution, the water retaining block is arranged at the air outlet end of the direct injection channel, a cross bar is arranged between the water retaining block and the direct injection channel, and the cross bar, the water retaining block and the direct injection channel are an integrally formed structure.

[0009] As a specific solution, the horizontal height of the upper end of the cross bar is greater than the horizontal height of the upper end of the water retaining block, and a guide slope is provided between the cross bar and the water retaining block, and the guide slope is inclined from top to bottom toward the center direction of the water retaining block.

[0010] As a specific solution, a sinking step is provided on the upper side of the water retaining block, and the horizontal height of the sinking step is smaller than the horizontal height of the upper end of the water retaining block.

[0011] As a specific solution, a guide cone surface is provided on the lower side of the water retaining block, and the width of the guide cone surface decreases from top to bottom.

[0012] As a specific solution, a lower air guide slope is provided on the inner side of the air intake end of the direct injection channel, and the lower air guide slope is arranged to be inclined downward from the inside to the outside.

[0013] As a specific solution, a water receiving step is provided on the inner side of the direct injection channel, and a horizontal height of the water receiving step forms a gap with a horizontal height of the upper end of the straight nozzle.

[0014] As a specific solution, the direct injection channel forms an upper air cavity and a lower air cavity at the upper and lower sides corresponding to the water receiving step, respectively, and the inner diameter of the upper air cavity is greater than the inner diameter of the lower air cavity.

[0015] As a specific solution, an upper air guiding slope is provided on the inner side of the water receiving step corresponding to a position between the upper air cavity and the lower air cavity, and the upper air guiding slope is inclined upward from the inside to the outside.

[0016] A burner head comprises a burner head body and the above-mentioned direct injection burner, wherein the direct injection channel is arranged at the center position of the burner head body.

[0017] As a specific solution, the straight nozzle is provided with a mounting ear, which is pressed from the center position of the straight nozzle to the left and right sides, and the mounting ear is provided with mounting screw holes on the left and right sides corresponding to the center position, and the mounting screw holes are connected and fixed to the furnace head body by screw devices.

[0018] The beneficial effects of the utility model are:

[0019] By setting the water retaining block, the liquid overflowing from the pot above the direct injection channel will not directly fall on the gas outlet end of the straight nozzle, thereby avoiding the gas outlet end of the straight nozzle being blocked and affecting the combustion effect of the burner. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0021] Figure 2 It is a structural schematic diagram of an embodiment of the utility model.

[0022] Figure 3 It is an enlarged view of A of the embodiment of the present invention. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] See also Figure 1-Figure 3The direct injection burner comprises a direct injection channel 11, a straight nozzle 2 is arranged below the direct injection channel 11, a water retaining block 3 is arranged above the straight nozzle 2, and a vertical projection of the water retaining block 3 covers the upper end of the straight nozzle 2. When the pot above the direct injection channel 11 overflows, the liquid may flow downward along the edge of the pot, especially the pot with an arc-shaped bottom, the liquid has the opportunity to flow to the center of the bottom of the pot, and finally drip downward on the surface of the water retaining block 3, thereby protecting the gas outlet end of the straight nozzle 2.

[0025] A gap is formed between the water retaining block 3 and the upper end of the straight nozzle 2 so that the water retaining block 3 will not affect the normal ejection of the airflow of the straight nozzle 2 .

[0026] By providing the water retaining block 3, the liquid overflowing from the pot above the direct injection channel 11 will not directly fall on the gas outlet end of the straight nozzle 2, thereby preventing the gas outlet end of the straight nozzle 2 from being blocked and affecting the combustion effect of the burner.

[0027] Furthermore, the water retaining block 3 is arranged at the air outlet end of the direct injection channel 11, and a cross bar 31 is provided between the water retaining block 3 and the direct injection channel 11. The cross bar 31, the water retaining block 3 and the direct injection channel 11 are an integrally formed structure. The water retaining block 3 does not require additional assembly, which simplifies the assembly difficulty of the burner head.

[0028] Furthermore, the horizontal height of the upper end of the cross bar 31 is greater than the horizontal height of the upper end of the water retaining block 3. A guide slope 311 is provided between the cross bar 31 and the water retaining block 3. The guide slope 311 is inclined from top to bottom toward the center direction of the water retaining block 3. The cross bar 31 can also guide the liquid to flow toward the water retaining block 3.

[0029] Furthermore, a sinking step 32 is provided on the upper side of the water retaining block 3, and the horizontal height of the sinking step 32 is smaller than the horizontal height of the upper end of the water retaining block 3. When a small amount of liquid drops on the surface of the water retaining block 3, the sinking step 32 can allow the liquid to stay on the water retaining block 3, thereby preventing the liquid from continuing to drip downward rapidly. When the time the liquid stays on the water retaining block 3 increases, the liquid can evaporate by itself in a high-temperature environment, thereby further reducing the chance of the liquid dripping onto the straight nozzle 2 or the bottom of the burner body 1.

[0030] Furthermore, a guide cone 33 is provided on the lower side of the water retaining block 3, and the width of the guide cone 33 decreases from top to bottom. When the gas passes through the bottom position of the water retaining block 3, it can form a tendency to diffuse circumferentially under the action of the guide cone 33, so that the flame combustion effect generated above the direct injection channel 11 is more uniform.

[0031] Furthermore, a lower air guide slope 111 is provided on the inner side of the air intake end of the direct injection channel 11, and the lower air guide slope 111 is inclined downward from the inside to the outside, so that the gas ejected from the straight nozzle 2 and the surrounding air can more easily enter the direct injection channel 11, thereby improving the injection effect of the air intake end of the direct injection channel 11.

[0032] Furthermore, a water receiving step 112 is provided on the inner side of the direct injection channel 11, and the horizontal height of the water receiving step 112 forms a gap with the horizontal height of the upper end of the straight nozzle 2. Part of the dripping liquid can flow along the inner wall of the direct injection channel 11 to the water receiving step 112 instead of directly flowing out to the air inlet end of the direct injection channel 11. The water receiving step 112 can increase the time of the liquid in the direct injection channel 11, which is beneficial to the high-temperature evaporation of the liquid in the direct injection channel 11.

[0033] Furthermore, an upper air cavity 113 and a lower air cavity 114 are formed on the upper and lower sides of the direct injection channel 11 corresponding to the water receiving step 112, respectively. The inner diameter of the upper air cavity 113 is larger than the inner diameter of the lower air cavity 114. After passing through the position of the water receiving step 112, the gas enters the lower air cavity 114 and can diffuse and mix in the lower air cavity 114, so that the mixing effect of the gas and air is better. After the airflow enters the upper air cavity 113 through the lower air cavity 114, it can be better diffused in the circumferential direction, so that the flame generated above the direct injection channel 11 has a more uniform combustion effect.

[0034] Furthermore, an upper air guiding slope 115 is provided on the inner side of the water receiving step 112 at a position corresponding to the position between the upper air cavity 113 and the lower air cavity 114 . The upper air guiding slope 115 is inclined upward from the inside to the outside, so that the airflow passing through the water receiving step 112 tends to diffuse in the circumferential direction.

[0035] The utility model also discloses a burner head, comprising a burner head body and the above-mentioned direct injection burner, wherein the direct injection channel is arranged at the center position of the burner head body, and the flame generated by the direct injection burner can be used as a center fire or a center boost flame.

[0036] Furthermore, a mounting ear 21 is provided on the straight nozzle 2, and the mounting ear 21 is pressed from the center position of the straight nozzle 2 to the left and right sides. Mounting screw holes 211 are respectively provided on the mounting ear 21 to the left and right sides corresponding to the center position. The mounting screw holes 211 are connected and fixed to the burner head body 1 by a screw device, so that the straight nozzle 2 can be assembled with the burner head body 1 more easily, and the force on the left and right sides of the straight nozzle 2 is more uniform, thereby improving the stability of its installation connection with the burner head body.

[0037] The above embodiments are only preferred embodiments of the present invention, and the present invention may have other embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all within the scope set by the claims of this application.

Claims

1. A direct injection burner, comprising a direct injection channel (11), wherein a straight nozzle (2) is provided below the direct injection channel (11), characterized in that: A water retaining block (3) is provided above the straight nozzle (2); the vertical projection of the water retaining block (3) covers the upper end of the straight nozzle (2); and a distance is formed between the water retaining block (3) and the upper end of the straight nozzle (2).

2. The direct injection burner according to claim 1, characterized in that: The water retaining block (3) is arranged at the air outlet end of the direct injection channel (11), a cross bar (31) is arranged between the water retaining block (3) and the direct injection channel (11), and the cross bar (31), the water retaining block (3) and the direct injection channel (11) are an integrally formed structure.

3. The direct injection burner according to claim 2, characterized in that: The horizontal height of the upper end of the cross bar (31) is greater than the horizontal height of the upper end of the water retaining block (3), and a flow guide slope (311) is provided between the cross bar (31) and the water retaining block (3), wherein the flow guide slope (311) is arranged to be inclined from top to bottom toward the center direction of the water retaining block (3).

4. The direct injection burner according to claim 1, characterized in that: A sinking step (32) is provided on the upper side of the water retaining block (3), and the horizontal height of the sinking step (32) is smaller than the horizontal height of the upper end of the water retaining block (3).

5. The direct injection burner according to claim 1, characterized in that: A guide cone surface (33) is provided on the lower side of the water retaining block (3), and the width of the guide cone surface (33) decreases from top to bottom.

6. The direct injection burner according to claim 1, characterized in that: A lower air guide slope (111) is provided on the inner side of the air inlet end of the direct injection channel (11), and the lower air guide slope (111) is arranged to be inclined downward from the inside to the outside.

7. The direct injection burner according to claim 1, characterized in that: A water receiving step (112) is provided on the inner side of the direct injection channel (11), and a horizontal height of the water receiving step (112) forms a spacing with a horizontal height of the upper end of the straight nozzle (2).

8. The direct injection burner according to claim 7, characterized in that: An upper air cavity (113) and a lower air cavity (114) are respectively formed on the upper and lower sides of the direct injection channel (11) corresponding to the water receiving step (112), and the inner diameter of the upper air cavity (113) is greater than the inner diameter of the lower air cavity (114); An upper air guiding slope (115) is provided on the inner side of the water receiving step (112) at a position corresponding to between the upper air cavity (113) and the lower air cavity (114), and the upper air guiding slope (115) is arranged to be inclined upward from the inside to the outside.

9. A burner head, characterized in that: It comprises a burner head body (1) and the direct injection burner according to any one of claims 1 to 8, wherein the direct injection channel (11) is arranged at the center of the burner head body (1).

10. The burner head according to claim 9, characterized in that: The straight nozzle (2) is provided with a mounting ear (21), the mounting ear (21) being pressed from the center position of the straight nozzle (2) to the left and right sides, and the mounting ear (21) is provided with mounting screw holes (211) to the left and right sides corresponding to the center position, respectively, and the mounting screw holes (211) are connected and fixed to the furnace head body (1) by means of screws.

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