Direct injection type furnace end

Abstract

A direct injection type furnace end comprises a furnace body and a direct injection component arranged on the furnace body, and the furnace body comprises a direct injection premixing channel located in the center of the furnace body and arranged in an up-down penetrating mode and a fire distribution air channel annularly arranged on the periphery of the direct injection premixing channel. The air outlet end of the direct injection component corresponds to the direct injection premixing channel, and an installation structure is arranged between the air outlet end of the direct injection component and the furnace body so that the direct injection component can be fixedly installed on the furnace body. The utility model provides a direct injection type furnace end, which is provided with a direct injection part, so that the furnace end forms central fire with concentrated and powerful flames, and the combustion efficiency of the furnace end is improved.

Description

Technical Field

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

[0002] There are various types of gas stoves on the market. For the burner head of a traditional gas stove, the gas first enters the outer fire distribution channel and / or the inner fire distribution channel of the burner head through the injector tube, then diffuses to the fire distribution seats through the fire distribution channels, and finally is evenly sprayed out through the small holes of the fire cover connected to the fire distribution seats. The problem is that when the burner head is in use, the gas can only be sprayed out from the small holes of the fire cover and participate in the combustion, resulting in a dispersed flame of the burner, a large but weak fire, and poor combustion efficiency. The dispersed and weak flame cannot meet the user's needs for efficient and fast stir-frying.

[0003] Therefore, further improvements are needed. Utility Model Content

[0004] The purpose of the utility model is to overcome at least one of the deficiencies of the above-mentioned prior art and to provide a direct injection burner head having a direct injection component so that the burner head forms a concentrated and powerful central fire, thereby improving the combustion efficiency of the burner head.

[0005] In order to achieve the above-mentioned purpose, the technical solution provided by the embodiment of the utility model is:

[0006] A direct-injection burner head comprises a furnace body and a direct-injection component arranged on the furnace body, the furnace body comprising a direct-injection premixing channel located in the center of the furnace body and penetrating vertically, and a fire-dividing gas channel annularly arranged at the periphery of the direct-injection premixing channel, the gas outlet end of the direct-injection component corresponds to the direct-injection premixing channel and a mounting structure is provided between the direct-injection component and the furnace body so that the direct-injection component can be fixed on the furnace body.

[0007] The direct injection component includes a direct injection seat, and the mounting structure includes a mounting column arranged on the furnace body, a mounting portion arranged on the direct injection seat, and a fastening component fastened to the mounting column. The mounting columns are divided into several groups and are circumferentially arranged on the periphery of the direct injection premixing channel. The mounting portion is arranged corresponding to the mounting columns and is circumferentially arranged on the outer peripheral wall of the direct injection seat. The fastening component passes through the mounting portion and is fastened to the mounting column to fix the direct injection seat on the furnace body.

[0008] There is a distance between the direct injection seat and the direct injection premixing channel so that air can enter the direct injection premixing channel through the distance and mix with the gas output by the direct injection seat. The height dimension of the distance is A, 5mm≤A≤10mm.

[0009] The direct injection seat is provided with an air flow passage, a first air inlet, and a first air outlet. The air flow passage is arranged in the direct injection seat, the first air inlet is arranged on the outer peripheral wall of the direct injection seat and is connected to the air flow passage, the first air outlet is arranged on the top surface of the direct injection seat and is connected to the air flow passage, the direct injection component also includes an air outlet component and an air inlet component, the air outlet component is installed on the first air outlet and its air outlet end faces the air inlet end of the direct injection premixing channel, and the air inlet component is installed on the first air inlet to connect the direct injection seat with an external air source.

[0010] The direct injection component includes a direct injection nozzle, and the mounting structure includes an internal thread arranged on the direct injection premixing channel, and an external thread arranged on the direct injection nozzle, and the internal thread and the external thread cooperate with each other to enable the direct injection nozzle to rotate on the direct injection premixing channel.

[0011] The direct injection nozzle is in the shape of a vertical tube, and is provided with an air chamber, a second air inlet hole, and a second air outlet hole. The second air inlet hole is located at the head end of the direct injection nozzle and is connected to the air chamber and is used to connect the direct injection nozzle with an external air source. The second air outlet hole is located at the end of the direct injection nozzle and is connected to the air chamber and passes through the direct injection premixing channel from bottom to top.

[0012] The direct injection nozzle is also provided with a plurality of first injection holes and second injection holes for replenishing air to the air chamber, and an injection nozzle for conveying fuel gas to the air chamber from the second air inlet hole. The plurality of first injection holes and second injection holes are circumferentially arranged on the side wall of the direct injection nozzle. The second injection hole is located above the first injection hole and its radial dimension is larger than that of the first injection hole. The injection nozzle is arranged between the second air inlet hole and the air chamber.

[0013] A guide channel is provided between the second air inlet and the injection nozzle. The horizontal projection of the guide channel is cone-shaped, and its radial dimension gradually increases from bottom to top.

[0014] The direct-injection burner head also includes an ejector pipe for connecting the fire distribution gas channel with an external gas source. The ejector pipe is arranged on the side of the furnace body and extends along the outer side of the furnace body. The horizontal projection of the air inlet end of the ejector pipe is conical, and its radial dimension gradually decreases along the fuel gas delivery direction.

[0015] The furnace body is made of cast iron material.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model provides a direct injection component on the furnace body, and a direct injection premixing channel is formed by running through the center of the furnace body from top to bottom. The direct injection component is fixed to the furnace body through a mounting structure and corresponds to the direct injection premixing channel. The burner head forms a concentrated and powerful central fire, which improves the combustion efficiency of the burner head and meets the user's needs for efficient and fast stir-frying. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a direct-injection burner head according to the first embodiment of the utility model.

[0019] Figure 2 It is a cross-sectional view of a direct-injection burner according to the first embodiment of the utility model.

[0020] Figure 3 This is an exploded view of the direct injection burner head according to the first embodiment of the utility model.

[0021] Figure 4 This is an exploded view of the direct injection burner head according to the first embodiment of the utility model.

[0022] Figure 5 This is an exploded view of the direct injection component of the first embodiment of the utility model.

[0023] Figure 6 It is a structural schematic diagram of a direct-injection burner head according to the second embodiment of the utility model.

[0024] Figure 7 It is a cross-sectional view of a direct-injection burner head according to the second embodiment of the utility model.

[0025] Figure 8 This is an exploded view of a direct-injection burner head according to the second embodiment of the present utility model.

[0026] Fig. 9 This is an exploded view of a direct-injection burner head according to the second embodiment of the present utility model.

[0027] Fig.10 It is a cross-sectional view of a direct injection component according to the second embodiment of the utility model. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0029] First embodiment

[0030] See also Figure 1-5The direct injection type furnace head comprises a furnace body 1, a direct injection component, and an ejector pipe 104. The furnace body 1 comprises a direct injection premixing channel 101 and a fire-distributing gas channel 102, which is made of cast iron material. The direct injection premixing channel 101 is located at the center of the furnace body 1 and passes through the furnace body 1 up and down. The number of the fire-distributing gas channel 102 is one group and its vertical projection is annular and arranged at the periphery of the direct injection premixing channel 101. The direct injection component is fixed on the furnace body 1 through a mounting structure, and its gas outlet corresponds to the direct injection premixing channel 101. 1 is arranged so that the gas output by the direct injection component can be transported to the top surface of the furnace body 1 through the direct injection premixing channel 101, and a delivery channel is arranged in the ejector pipe 104 and is used to connect the fire-distributing gas channel 102 with the external gas source so that the gas is transported to the fire-distributing gas channel 102 for combustion. The ejector pipe 104 is arranged on the side of the furnace body 1 and extends along the outer side of the furnace body 1 and is integrally formed with the furnace body 1. In this embodiment, the direct injection component preferably includes a direct injection seat 2, and the vertical projection of the direct injection seat 2 is circular. The fire distribution channel 102 is closed, and the furnace body 1 is provided with a plurality of outer ring combustion holes 105 and a plurality of inner ring combustion holes 106 respectively connected with the fire distribution channel 102. The outer ring combustion holes 105 face the outer side of the top surface of the furnace body 1 and form the outer ring fire of the direct injection burner head, and the inner ring combustion holes 106 face the inner side of the top surface of the furnace body 1 and form the inner ring fire of the direct injection burner head. The mounting structure includes a mounting column 103 arranged on the furnace body 1, a mounting portion 201 arranged on the direct injection seat 2, and The fastening components 3 fastened to each other by the mounting columns 103, the direct injection seat 2 approaches the furnace body 1 from bottom to top, the fastening components 3 pass through the mounting portion 201 and are fastened to the mounting columns 103, so that the direct injection seat 2 is fixed on the furnace body 1, and the direct injection component is fixed on the furnace body 1. Through the above technical scheme, the direct injection component can provide a concentrated and powerful open flame, so that the burner head forms a concentrated and powerful central fire, thereby improving the combustion efficiency of the burner head and meeting the user's demand for efficient and fast stir-frying.

[0031] Furthermore, in the present embodiment, the number of mounting columns 103 is preferably three groups and they are circumferentially arranged on the periphery of the direct injection premixing channel 101, the mounting columns 103 are provided with screw holes that cooperate with the fastening components 3, the number of mounting portions 201 corresponds to the mounting columns 103, which are preferably three groups and are circumferentially arranged on the outer peripheral wall of the direct injection seat 2, the mounting portions 201 are provided with through holes for the fastening components 3 to pass through, and through the above technical scheme, the direct injection seat 2 is fixed to the furnace body 1 through three groups of fastening components 3 cooperating with the mounting portions 201, thereby ensuring the stability and balance of the direct injection seat 2 installed on the furnace body 1, which is understood by those skilled in the art.

[0032] Furthermore, there is a gap between the direct injection seat 2 and the direct injection premixing channel 101. In the present embodiment, the height dimension of the gap is preferably 7 mm, so that air can enter the direct injection premixing channel 101 through the gap and mix with the gas output by the direct injection seat 2. Through the above technical scheme, the gap can deliver air into the direct injection premixing channel 101 and premix it with the gas output by the direct injection seat 2, thereby ensuring the combustion effect of the gas in the direct injection seat 2, which can be understood by those skilled in the art.

[0033] Furthermore, the direct injection seat 2 is provided with an air flow passage 202, a first air inlet 203, and a first air outlet 204. Specifically, in the present embodiment, the air flow passage 202 is arranged in the direct injection seat 2, the number of the first air inlet 203 is preferably one group and is arranged on the outer peripheral wall of the direct injection seat 2 and is connected to the air flow passage 202, the number of the first air outlet 204 is preferably five groups and is evenly arranged on the top surface of the direct injection seat 2 and is connected to the air flow passage 202, the direct injection component also includes an air outlet component 4 and an air inlet component 5, the air outlet component 4 is preferably a nozzle and is installed on the first air outlet 204 through a threaded structure, the air outlet end of the air outlet component 4 faces the air inlet end of the direct injection premixing channel 101, so that the gas in the direct injection component is sprayed toward the direction of the direct injection premixing channel 101, the air inlet component 5 is preferably a joint and is installed on the first air inlet 203 through a threaded structure to connect the direct injection seat 2 with an external gas source, so that the gas is delivered to the direct injection seat 2, which can be understood by those skilled in the art.

[0034] Furthermore, the horizontal projection of the air inlet end of the ejector tube 104 is conical, and its radial dimension gradually decreases along the direction of gas transportation. Through the above technical scheme, while the gas is transported from the external gas source to the direction of the fire-distributing gas duct 102, the gas is concentrated from the outside of the ejector tube 104 toward its center, thereby increasing the flow rate of the gas and enhancing the pressure of the gas, thereby outputting gas with a higher flow rate and higher pressure to the fire-distributing gas duct 102, which can be understood by those skilled in the art.

[0035] Second embodiment

[0036] See also Figure 6-10 The direct-injection burner head is different from the first embodiment in that, in the present embodiment, the fire-distributing gas channel 102 is open and its opening faces upward and is used to install the fire cover. The direct-injection component preferably includes a direct-injection nozzle 6. The mounting structure includes an internal thread arranged on the direct-injection premixing channel 101, and an external thread arranged on the direct-injection nozzle 6. The internal thread is arranged on the inner peripheral wall of the direct-injection premixing channel 101 and extends along the length direction of the direct-injection premixing channel 101. The external thread is arranged on the outer peripheral wall of the direct-injection nozzle 6 and is located outside the gas outlet end of the direct-injection nozzle 6. When the direct-injection nozzle 6 approaches the furnace body 1 from bottom to top, the internal thread and the external thread cooperate with each other to rotate the direct-injection nozzle 6 on the direct-injection premixing channel 101, so as to realize the fixing of the direct-injection component on the furnace body 1.

[0037] Furthermore, the direct injection nozzle 6 is in the shape of a vertical tube, and is provided with an air chamber 601, a second air inlet hole 602, and a second air outlet hole 603. The second air inlet hole 602 is located at the head end of the direct injection nozzle 6 and is connected to the air chamber 601 and is used to connect the direct injection nozzle 6 to an external air source. The second air outlet hole 603 is located at the end of the direct injection nozzle 6 and is connected to the air chamber 601 and passes through the direct injection premixing channel 101 from bottom to top. Through the above technical scheme, the gas passes through the second air inlet hole 602, the air chamber 601, and the second air outlet hole 603 in sequence to reach the direct injection premixing channel 101 and participate in combustion, which can be understood by those skilled in the art.

[0038] Furthermore, the direct-injection nozzle 6 is also provided with a first injection hole 604, a second injection hole 605, and an injection nozzle 606. Specifically, the number of the first injection holes 604 is preferably six groups and they are arranged circumferentially on the side wall of the direct-injection nozzle 6, and air can be sent into the air cavity 601 and pre-mixed with the gas in the air cavity 601, thereby ensuring the combustion effect of the gas in the direct-injection nozzle 6. The number of the second injection holes 605 is preferably six groups and they are arranged circumferentially on the side wall of the direct-injection nozzle 6, and are located above the first injection holes 604. The radial size of the second injection holes 605 is larger than the radial size of the first injection holes 604, thereby further increasing the air flow into the air cavity 601. The capacity of air delivered into the air cavity 601 makes the combustion of the gas in the direct injection nozzle 6 more complete, and further improves the combustion effect of the gas. The injection nozzle 606 is arranged between the second air inlet hole 602 and the air cavity 601 and is used for the injection nozzle 606 to deliver the gas from the second air inlet hole 602 to the air cavity 601. When the gas enters the direct injection nozzle 6 from the second air inlet hole 602 and is delivered to the injection nozzle 606, the injection nozzle 606 is reduced in cross-section relative to the air cavity 601, so that the gas flow rate increases and the pressure is enhanced, thereby outputting high-flow rate and high-pressure pressurized gas to the air cavity 601, which can be understood by those skilled in the art.

[0039] Furthermore, a guide channel 607 is provided between the second air inlet hole 602 and the injection nozzle 606. The horizontal projection of the guide channel 607 is conical, and its radial dimension gradually increases from bottom to top. Through the above technical scheme, while the gas is transported from the second air inlet hole 602 to the injection nozzle 606, the gas is concentrated at the air inlet end of the injection nozzle 606 from the outside to the center, thereby further improving the flow rate of the gas and further enhancing the pressure of the gas, thereby outputting pressurized gas with a higher flow rate and a higher pressure to the air chamber 601, which can be understood by those skilled in the art.

[0040] Other parts not described are the same as those in the second embodiment and will not be repeated.

[0041] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A direct injection burner head, characterized in that: The invention comprises a furnace body (1), and a direct injection component arranged on the furnace body (1), the furnace body (1) comprising a direct injection premixing channel (101) located at the center of the furnace body (1) and extending through the furnace body (1) vertically, and a fire distribution gas channel (102) annularly arranged at the periphery of the direct injection premixing channel (101), the gas outlet end of the direct injection component corresponds to the direct injection premixing channel (101), and a mounting structure is arranged between the direct injection component and the furnace body (1) so that the direct injection component is fixedly mounted on the furnace body (1).

2. The direct injection burner according to claim 1, characterized in that: The direct injection component comprises a direct injection seat (2); the mounting structure comprises a mounting column (103) arranged on the furnace body (1), a mounting portion (201) arranged on the direct injection seat (2), and a fastening component (3) fastened to the mounting column (103); the mounting columns (103) are grouped into a plurality of groups and are circumferentially arranged on the periphery of the direct injection premixing channel (101); the mounting portion (201) is arranged corresponding to the mounting columns (103) and is circumferentially arranged on the outer peripheral wall of the direct injection seat (2); the fastening component (3) passes through the mounting portion (201) and is fastened to the mounting column (103) so that the direct injection seat (2) is fixedly mounted on the furnace body (1).

3. The direct injection burner according to claim 2, characterized in that: There is a gap between the direct injection seat (2) and the direct injection premixing channel (101) so that air can enter the direct injection premixing channel (101) through the gap and mix with the fuel gas output by the direct injection seat (2), and the height dimension of the gap is A, 5mm≤A≤10mm.

4. The direct injection burner according to claim 2, characterized in that: The direct injection seat (2) is provided with an air flow passage (202), a first air inlet (203), and a first air outlet (204); the air flow passage (202) is arranged in the direct injection seat (2); the first air inlet (203) is arranged on the outer peripheral wall of the direct injection seat (2) and is in communication with the air flow passage (202); the first air outlet (204) is arranged on the top surface of the direct injection seat (2) and is in communication with the air flow passage (202); the direct injection component further comprises an air outlet component (4) and an air inlet component (5); the air outlet component (4) is mounted on the first air outlet (204) and its air outlet end faces the air inlet end of the direct injection premixing channel (101); the air inlet component (5) is mounted on the first air inlet (203) so that the direct injection seat (2) is in communication with an external air source.

5. The direct injection burner according to claim 1, characterized in that: The direct injection component comprises a direct injection nozzle (6), and the mounting structure comprises an internal thread provided on the direct injection premixing channel (101), and an external thread provided on the direct injection nozzle (6), wherein the internal thread and the external thread cooperate with each other to enable the direct injection nozzle (6) to rotate on the direct injection premixing channel (101).

6. The direct injection burner according to claim 5, characterized in that: The direct injection nozzle (6) is in the shape of a vertical tube, and is provided with an air chamber (601), a second air inlet (602), and a second air outlet (603). The second air inlet (602) is located at the head end of the direct injection nozzle (6) and is connected to the air chamber (601) and is used to connect the direct injection nozzle (6) to an external air source. The second air outlet (603) is located at the end of the direct injection nozzle (6) and is connected to the air chamber (601) and passes through the direct injection premixing channel (101) from bottom to top.

7. The direct injection burner according to claim 6, characterized in that: The direct injection nozzle (6) is also provided with a plurality of first injection holes (604) and second injection holes (605) for replenishing air to the air circulation chamber (601), and an injection nozzle (606) for conveying fuel gas from the second air inlet hole (602) to the air circulation chamber (601). The plurality of first injection holes (604) and second injection holes (605) are circumferentially arranged on the side wall of the direct injection nozzle (6), the second injection hole (605) is located above the first injection hole (604) and its radial dimension is larger than the radial dimension of the first injection hole (604), and the injection nozzle (606) is arranged between the second air inlet hole (602) and the air circulation chamber (601).

8. The direct injection burner according to claim 7, characterized in that: A guide channel (607) is provided between the second air inlet hole (602) and the injection nozzle (606); the horizontal projection of the guide channel (607) is conical, and its radial dimension gradually increases from bottom to top.

9. The direct injection burner according to any one of claims 1 to 8, characterized in that: The direct-injection burner head further comprises an ejector pipe (104) for connecting the fire distribution gas channel (102) with an external gas source, the ejector pipe (104) being arranged on the side of the furnace body (1) and extending along the outer side of the furnace body (1), the horizontal projection of the air inlet end of the ejector pipe (104) being conical, and its radial dimension gradually decreasing along the conveying direction of the fuel gas.

10. The direct injection burner according to any one of claims 1 to 8, characterized in that: The furnace body (1) is made of cast iron material.

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