Combustor with t-shaped injection structure

Abstract

The application discloses a combustor with a T-shaped injection structure, comprising a combustor body, wherein the combustor body is provided with an outer ring mixing cavity, an air inlet channel and two injection channels; a nozzle for spraying gas into the air inlet channel is arranged at the inlet of the air inlet channel; the outer ring mixing cavity is arranged in a ring shape, and the two injection channels are arranged on the inner side of the outer ring mixing cavity; the inlet end of each of the two injection channels is connected with the tail end of the air inlet channel, and the two injection channels extend to the two sides of the air inlet channel respectively, and the tail end of each of the two injection channels is connected with the outer ring mixing cavity. The combustor can make the gas pressure distribution of the outer ring mixing cavity more uniform, and the flame of combustion more uniform.

Description

Technical Field

[0001] The invention relates to the technical field of stove burners, in particular to a burner with a T-shaped ejector structure. Background Art

[0002] Existing gas stove burners typically inject gas into the burner through an ejector pipe. After mixing with air, the gas flows to the distributor for combustion. However, the nozzle of existing burners typically injects gas directly into the ejector pipe, allowing gas to enter the mixing chamber through a single channel, the ejector pipe. This results in relatively high pressure in the mixing chamber at the ejector pipe outlet, uneven gas pressure distribution in the mixing chamber, uneven flame generation, and uneven heating of the pot bottom. Summary of the Invention

[0003] The present invention provides a burner with a T-shaped ejector structure, which can make the gas pressure distribution in the outer ring mixing chamber more uniform and the combustion flame more uniform.

[0004] In order to solve the above problems, the present invention adopts the following technical solutions:

[0005] An embodiment of the present invention provides a burner with a T-shaped ejector structure, comprising a burner body, wherein the burner body is provided with an outer ring mixing chamber, an air intake channel and two ejector channels; a nozzle for injecting fuel gas into the air intake channel is provided at the inlet of the air intake channel; the outer ring mixing chamber is arranged in an annular shape, and the two ejector channels are both arranged on the inner side of the outer ring mixing chamber; the inlet ends of the two ejector channels are both connected to the tail end of the air intake channel, and the two ejector channels extend to both sides of the air intake channel respectively, and the tail ends of the two ejector channels are both connected to the outer ring mixing chamber.

[0006] In some embodiments, the ejection channel gradually expands from the inlet end to the tail end in the direction extending toward the outer ring mixing chamber; the inlet ends of the two ejection channels are connected, and the tail end of the air inlet channel is arranged on the front of the connection between the two ejection channels.

[0007] In some embodiments, the two ejection channels are symmetrically arranged relative to the axis of the air inlet channel, and the extension directions of the two ejection channels are perpendicular to the axis of the air inlet channel.

[0008] In some embodiments, the axis of the air inlet channel and the centers of the two ejection channels in the horizontal direction are both in the same horizontal plane.

[0009] In some embodiments, the height of the tail end of the air inlet channel is less than or equal to the height of the connection between the two ejection channels.

[0010] In some embodiments, an upper baffle is provided on the inner wall of the outer ring mixing chamber, and the upper baffle is located above the tail end of the ejection channel.

[0011] In some embodiments, the bottom wall of the outer ring mixing cavity is provided with a groove, the bottom wall of the groove is in abutment with the inner wall of the bottom of the tail end of the injection channel, the inner wall of the groove comprises two inclined walls respectively arranged on the left and right sides of the tail end of the injection channel; the height of the inclined wall gradually increases in the direction away from the bottom wall of the groove.

[0012] In some embodiments, the burner body is further provided with an inner ring mixing cavity and an inner ring connecting channel, the connection of the two injection channels with the air inlet channel is connected with one end of the inner ring connecting channel, and the other end of the inner ring connecting channel is connected with the inner ring mixing cavity.

[0013] In some embodiments, one end of the inner ring connecting channel is located at the top of the connection of the two injection channels with the air inlet channel.

[0014] In some embodiments, the cross-sectional shape of the injection channel is square, circular or semicircular.

[0015] The nozzle of the present application sprays gas into the air inlet channel, and the gas enters the outer ring cavity through the two injection channels, which can play a role in flow splitting to reduce the pressure difference inside the outer ring mixing cavity, and the gas pressure distribution of the outer ring mixing cavity is more uniform, the flame of the combustion is more uniform, and the pot bottom can be uniformly heated. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the principle of a burner with a T-shaped injection structure according to an embodiment;

[0017] Figure 2 It is a schematic diagram of the structure of a burner with a T-shaped injection structure according to an embodiment;

[0018] Figure 3 It is a schematic diagram of the cross section of a burner with a T-shaped injection structure according to an embodiment in the direction parallel to the extension direction of the air inlet channel;

[0019] Figure 4 It is a schematic diagram of the exploded view of a burner with a T-shaped injection structure according to an embodiment;

[0020] Figure 5 It is a schematic diagram of the cross section of a burner with a T-shaped injection structure according to an embodiment in the direction perpendicular to the extension direction of the air inlet channel;

[0021] Figure 6 It is a schematic diagram of the structure of a burner with a T-shaped injection structure according to an embodiment after removing the outer ring flame cover;

[0022] Figure 7Fig. 3 is a schematic view of the burner with T-shaped injection structure according to another embodiment of the present application, in which the outer ring flame cover and the furnace top cover are removed;

[0023] Figure 8 Fig. 4 is a schematic view of the burner with T-shaped injection structure according to another embodiment of the present application;

[0024] Figure 9 Fig. 5 is a schematic view of the burner with T-shaped injection structure according to another embodiment of the present application, in which the section is parallel to the extending direction of the air inlet channel;

[0025] Figure 10 Fig. 6 is a schematic view of the burner with T-shaped injection structure according to another embodiment of the present application, in which the section is perpendicular to the extending direction of the air inlet channel;

[0026] Figure 11 Fig. 7 is a schematic view of the burner with T-shaped injection structure according to another embodiment of the present application, in which the outer ring flame cover and the furnace top cover are removed.

[0027] Figure 12 Fig. 7 is a schematic view of the burner with T-shaped injection structure according to another embodiment of the present application, in which the outer ring flame cover and the furnace top cover are removed.

[0028] In the drawings, the following reference numerals are used:

[0029] Burner body 10, outer ring flame cover 11, furnace bottom 12, furnace top cover 13, mounting seat 14, inner ring flame cover 15;

[0030] Outer ring mixing chamber 110, upper baffle 111, groove 112, inclined wall 113, air inlet channel 120, injection channel 130, rear side wall 131, nozzle 140, gas supply pipe 141;

[0031] Inner ring mixing chamber 150, inner ring connecting channel 160. DETAILED DESCRIPTION

[0032] The present application provides the following description with reference to the accompanying drawings to help fully understand various embodiments of the present application as defined by the claims and their equivalents. The description includes various specific details to help understanding, but these details should be regarded as merely exemplary. Therefore, those skilled in the art will recognize various changes and modifications to the various embodiments described herein without departing from the scope and spirit of the present application.

[0033] In the description of the present application, the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0034] It will be understood that when one element (e.g., a first element) is “connected” to another element (e.g., a second element), the element may be directly connected to the other element or an intervening element (e.g., a third element) may be present between the element and the other element.

[0035] The embodiment of the present invention provides a burner with a T-shaped ejector structure, such as Figure 1-5 As shown, the burner body 10 is provided with an outer ring mixing chamber 110, an air inlet passage 120, and two ejection passages 130. A nozzle 140 is provided at the entrance of the air inlet passage 120 for injecting gas into the air inlet passage 120. Under the action of the airflow, the outside air enters the air inlet passage 120 along with the gas. The outer ring mixing chamber 110 is arranged in an annular shape. When the gas burns, an annular flame is formed above the outer ring mixing chamber 110. The two ejection passages 130 are both arranged on the inner side of the outer ring mixing chamber 110, that is, located inside the annular structure of the outer ring mixing chamber 110. The inlet ends of the two ejection passages 130 are connected to the rear end of the air inlet passage 120, and the two ejection passages 130 extend to both sides of the air inlet passage 120, respectively. Therefore, the air inlet passage 120 and the two ejection passages 130 form a "T"-shaped structure. The tail ends of the two injection channels 130 are connected to the outer ring mixing chamber 110. After the gas enters the air inlet channel 120, it is injected into the outer ring cavity 110 through the two injection channels 130. The two injection channels 130 can play a diversion role to reduce the air pressure difference inside the outer ring mixing chamber 110. The gas pressure distribution in the outer ring mixing chamber 110 is more uniform, the burning flame is more uniform, the bottom of the pot can be heated evenly, and the cooking effect of food is better.

[0036] In some embodiments, the air inlet channel 120 may be conical, cylindrical, or in other shapes. When conical, the area of ​​the inlet end of the air inlet channel 120 is larger than the area of ​​the rear end of the air inlet channel 120 , which can gradually guide the airflow to flow toward the ejection channel 130 . The conical structure may be a circular cone, a square pyramid, or other conical shapes. When cylindrical, it may be a cylindrical, square, or other cylindrical structure.

[0037] In some embodiments, the cross-sectional shape of the ejection channel 130 can be square, circular, semicircular or other shapes; when it is square, specifically rectangular or square, the ejection channel 130 will have a top wall, a bottom wall, a front side wall and a rear side wall.

[0038] In some embodiments, the ejection channel 130 gradually expands from the inlet end to the tail end in the direction extending toward the outer ring mixing chamber 110, that is, the cross-sectional area of ​​the ejection channel 130 may gradually increase, with a small opening near the end of the air inlet channel 120 and a large opening near the end of the outer ring mixing chamber 110, so as to eject the gas into the outer ring mixing chamber 110. The inlet ends of the two ejection channels 130 are connected, and the tail end of the air inlet channel 120 is arranged on the front part (the part close to the air inlet channel 120) of the connection between the two ejection channels 130, specifically, it may be arranged on the front side wall of the connection between the two ejection channels 130. Therefore, the side wall of the rear part of the connection between the two ejection channels 130 is opposite to the air inlet channel 120. As shown in FIG. Figure 4 As shown, the airflow will hit the rear sidewall 131 at the connection between the two injection channels 130, and then spread outward along the rear sidewall 131. The injection channels 130 are configured to have a gradually expanding structure, which can guide the airflow along the injection channels 130, thereby reducing the backflow of gas into the intake channel 120. The front sidewall and the rear sidewall of the injection channel 130 can both be connected to the inner wall of the mixing chamber 110.

[0039] Furthermore, the two ejection channels 130 are symmetrically arranged relative to the axis of the air intake channel 120, and the extension directions of the two ejection channels 130 are perpendicular to the axis of the air intake channel 120. The two ejection channels 130 are more evenly distributed relative to the air intake channel 120, and the gas can enter the two ejection channels 130 relatively evenly, so as to further improve the uniformity of the gas pressure distribution in the outer ring mixing chamber 110.

[0040] Furthermore, the axis of the air intake channel 120 and the centers of the two ejection channels 130 in the horizontal direction are in the same horizontal plane, and the air intake channel 120 and the two ejection channels 130 are more T-shaped as a whole. The gas can enter the two ejection channels 130 more evenly, further improving the uniformity of the gas pressure distribution in the outer ring mixing chamber 110.

[0041] In some embodiments, the height of the tail end of the air inlet channel 120 is less than or equal to the height of the connection between the two ejection channels 130 , the tail end of the air inlet channel 120 is not blocked, and the gas can smoothly enter the ejection channel 130 .

[0042] In some embodiments, the burner body 100 includes an outer ring fire cover 11, a burner base 12, and a burner upper cover 13. The burner upper cover 13 is mounted on the burner base 12. The outer ring fire cover 11 is mounted on the burner base 12 and the burner upper cover 13. The burner base 12 and the burner upper cover 13 together form an air intake channel 120 and an ejection channel 130. The outer ring fire cover 11, the burner base 12, and the burner upper cover 13 together form an outer ring mixing chamber 110. In this embodiment, the burner body 10 is formed in a split structure to facilitate overall assembly.

[0043] Furthermore, a mounting base 14 is fixed to the bottom of the burner base 12, and a gas supply pipe 141 is fixed on the mounting base 14. The gas supply pipe 141 is connected to the nozzle 140, and the gas supply pipe 141 is connected to the external gas supply device, and gas is supplied to the nozzle 140 through the gas supply pipe 141.

[0044] In some embodiments, as Figure 6 As shown, an upper baffle 111 is provided on the inner wall of the outer ring mixing chamber 110, and is located above the rear end of the ejection channel 130. When the gas enters the outer ring mixing chamber 110 from the ejection channel 130, the upper baffle 111 prevents the gas from moving directly upward. The gas can move laterally along the upper baffle 111 within the outer ring mixing chamber 110, thereby ensuring a more even mixing of the gas and air within the outer ring mixing chamber 110.

[0045] Further, such as Figure 7 As shown, the bottom wall of the outer ring mixing chamber 110 is provided with a groove 112, and the bottom wall of the groove 112 is connected to the inner wall of the bottom of the tail end of the ejection channel 130. Specifically, the inner wall of the bottom of the tail end of the ejection channel 130 can continue to extend to form the bottom wall of the groove 112. The inner wall of the groove 112 includes two inclined walls 113, which are respectively located on both sides of the tail end of the ejection channel 130. In the direction away from the bottom wall of the groove 112, the height of the inclined walls 113 gradually increases to guide the gas evenly to both sides. The gas can gradually diffuse in the outer ring mixing chamber 110 along the inclined walls 113, thereby improving the uniformity of the gas pressure distribution in the outer ring mixing chamber 110.

[0046] In some embodiments, the tail ends of the two ejection channels 130 are connected to the middle position of the outer ring mixing chamber 110 in the extension direction of the air inlet channel 120, that is, the connection between the tail ends of the ejection channels 130 and the outer ring mixing chamber 110 is located in the middle position of the outer ring mixing chamber 110 in the extension direction of the air inlet channel 120. In this way, the gas entering the outer ring mixing chamber 110 can be relatively evenly diffused in the outer ring mixing chamber 110 starting from the middle position of the outer ring mixing chamber 110, and the gas pressure in the entire outer ring mixing chamber 110 can be more evenly distributed, and the combustion flame can also be more uniform.

[0047] In some embodiments, as Figure 12 As shown, the two ejection channels 130 can also be arranged at a relatively rearward position in the extension direction of the air intake channel 120, and the tail ends of the two ejection channels 130 can also be connected to a middle rearward position of the outer ring mixing chamber 110 in the extension direction of the air intake channel 120.

[0048] The present invention also provides a burner with a T-shaped ejector structure, based on any of the above embodiments, as Figure 8-11 As shown, the burner body 10 of this embodiment is further provided with an inner ring mixing chamber 150 and an inner ring connecting channel 160. The outer ring mixing chamber 110 is arranged around the inner ring mixing chamber 150, and an inner ring fire can be ignited above the inner ring mixing chamber 150. The junction of the two ejection channels 130 and the air inlet channel 120 is connected to one end of the inner ring connecting channel 160, and the other end of the inner ring connecting channel 160 is connected to the inner ring mixing chamber 150. Therefore, a portion of the gas is diverted to the inner ring mixing chamber 150 through the inner ring connecting channel 160. This embodiment is also applicable to double-ring burners, which can enhance the burning power.

[0049] In some embodiments, one end of the inner ring connecting channel 160 is located at the top of the connection between the two ejection channels 130 and the intake channel 120. The airflow at the tail end of the intake channel 120 moves upward and can directly enter the inner ring mixing chamber 150 after passing through the inner ring connecting channel 160, which can shorten the path of the gas entering the inner ring mixing chamber 150. At the same time, it can avoid the ejection channels 130 on both sides of the intake channel 120, reducing interference with the ejection channels 130.

[0050] Furthermore, the rear side wall 131 of the connection between the two ejection channels 130 and the rear side wall of the inner ring connecting channel 160 are located in the same plane. The airflow colliding with the rear side wall 131 can move along the rear side wall 131 toward the upper inner ring connecting channel 160, facilitating the smooth entry of the gas into the inner ring connecting channel 160, which can further reduce the backflow of the gas.

[0051] In some embodiments, the burner body 100 includes an outer ring fire cover 11, a burner base 12, a burner upper cover 13, and an inner ring fire cover 15. The burner upper cover 13 is mounted on the burner base 12, the outer ring fire cover 11 is mounted on the burner base 12 and the burner upper cover 13, and the inner ring fire cover 15 is mounted on the burner upper cover 13. The burner base 12 and the burner upper cover 13 together form an air intake channel 120 and an ejection channel 130. The outer ring fire cover 11, the burner base 12, and the burner upper cover 13 together form an outer ring mixing chamber 110. The inner ring fire cover 15 and the burner upper cover 13 together form an inner ring mixing chamber 150. An inner ring connecting channel 160 is provided on the burner upper cover 13. In this embodiment, the burner body 10 is formed by a split structure to facilitate overall assembly.

[0052] The terms and words used in the above description and claims are not limited to the literal meanings, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, it should be clear to those skilled in the art that the above description of various embodiments of the present invention is provided for illustration only and is not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A burner with a T-shaped ejector structure, characterized in that: The burner comprises a burner body, the burner body being provided with an outer ring mixing chamber, an air intake channel, and two ejection channels; a nozzle for injecting gas into the air intake channel is provided at the inlet of the air intake channel; the outer ring mixing chamber is arranged in an annular shape, and the two ejection channels are both provided on the inner side of the outer ring mixing chamber; the inlet ends of the two ejection channels are both connected to the rear end of the air intake channel, and the two ejection channels extend to both sides of the air intake channel respectively, and the rear ends of the two ejection channels are both connected to the outer ring mixing chamber; An upper baffle is provided on the inner wall of the outer ring mixing chamber, and the upper baffle is located above the tail end of the ejection channel; The bottom wall of the outer ring mixing chamber is provided with a groove, and the bottom wall of the groove is connected to the inner wall of the bottom of the tail end of the injection channel. The inner wall of the groove includes two inclined walls, and the two inclined walls are respectively arranged on the left and right sides of the tail end of the injection channel; in the direction away from the bottom wall of the groove, the height of the inclined wall gradually increases.

2. The burner with a T-shaped ejector structure according to claim 1, characterized in that: In the direction of extending toward the outer ring mixing chamber, the ejection channel gradually expands from the inlet end to the tail end; the inlet ends of the two ejection channels are connected, and the tail end of the air inlet channel is arranged on the front of the connection of the two ejection channels.

3. The burner with a T-shaped ejector structure according to claim 2, characterized in that: The two ejection channels are symmetrically arranged relative to the axis of the air inlet channel, and the extension directions of the two ejection channels are perpendicular to the axis of the air inlet channel.

4. The burner with a T-shaped ejector structure according to claim 3, characterized in that: The axis of the air inlet channel and the centers of the two ejection channels in the horizontal direction are all in the same horizontal plane.

5. The burner with a T-shaped ejector structure according to claim 2, characterized in that: The height of the tail end of the air inlet channel is less than or equal to the height of the connection between the two ejection channels.

6. The burner with a T-shaped ejector structure according to any one of claims 1 to 5, characterized in that: The burner body is also provided with an inner ring mixing chamber and an inner ring connecting channel. The connection between the two ejection channels and the air inlet channel is connected to one end of the inner ring connecting channel, and the other end of the inner ring connecting channel is connected to the inner ring mixing chamber.

7. The burner with a T-shaped ejector structure according to claim 6, characterized in that: One end of the inner ring connecting channel is located at the top of the connection between the two ejection channels and the air inlet channel.

8. The burner with a T-shaped ejector structure according to any one of claims 1 to 5, characterized in that: The cross-sectional shape of the ejection channel is square, circular or semicircular.

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