Combustor

Abstract

The utility model provides a combustor. The combustor comprises a seat body, a gas mixing pipe, a connecting pipe and a gas inlet assembly. The seat body is provided with a first gas outlet pipe, the gas mixing pipe is provided with a gas inlet end and a gas outlet end, the gas outlet end is communicated with the first gas outlet pipe, and the inner diameter of the gas mixing pipe is unchanged from the gas inlet end to the gas outlet end; an air inlet is formed in the pipe wall, between the air inlet end and the air outlet end, of the air mixing pipe; one end of the connecting pipe is connected to the air inlet assembly, the other end of the connecting pipe is provided with an air spraying piece, the air spraying piece is provided with a nozzle opening and connected to the air inlet end, and the nozzle opening is close to the air inlet. According to the combustor, the gas mixing pipe is used for replacing a conventional injection pipe, the inner diameter of the gas mixing pipe is kept unchanged from the gas inlet end to the gas outlet end of the gas mixing pipe, and compared with an existing injection pipe, the gas mixing pipe is simpler in structure, and the overall cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a burner. Background Art

[0002] Gas stoves are common kitchen appliances in people's daily lives. Gas stoves usually include an air intake assembly, a burner, and a flame divider. The air intake assembly delivers gas to the small and large burners of the burner, and the flame divider can be connected to the small and large burners, so that the inner ring small fire and the outer ring large fire can be generated by the flame divider for users to cook.

[0003] Before reaching the ignition distributor, the gas needs to be premixed with air to form a gas-air mixture for combustion. In existing gas stoves, the burner head usually includes a low-fire ejector tube and a high-fire ejector tube, and the low-fire ejector tube and the high-fire ejector tube are basically the same length. The gas delivered to the burner head by the air intake assembly will enter the low-fire ejector tube and the high-fire ejector tube, and the air pressure difference will be used to attract air into the low-fire ejector tube and the high-fire ejector tube, thereby achieving premixing of gas and air in the low-fire ejector tube and the high-fire ejector tube. However, the manufacturing process of the ejector tube is complicated, and the overall cost of such a gas stove is relatively high. Utility Model Content

[0004] In order to at least partially solve the problems existing in the prior art, the utility model provides a burner. The burner includes a seat body, a mixing pipe, a connecting pipe and an air intake assembly; the seat body has a first air outlet pipe, the mixing pipe has an air intake end and an air outlet end, the air outlet end is connected to the first air outlet pipe, and the inner diameter of the mixing pipe is constant from the air intake end to the air outlet end; the mixing pipe is provided with an air inlet on the pipe wall between the air intake end and the air outlet end; one end of the connecting pipe is connected to the air intake assembly, and the other end of the connecting pipe is provided with an injection member, the injection member has a nozzle opening, the injection member is connected to the air intake end, and the nozzle opening is provided close to the air inlet.

[0005] In the burner provided by the utility model, after the gas enters the connecting pipe from the air intake assembly and enters the mixing pipe through the nozzle opening on the jet component, the gas flowing out from the nozzle opening has a large flow rate, and the pressure difference can be used to attract external air into the mixing pipe at the air inlet, so that the gas and air can be mixed in the mixing pipe. In such a burner, a mixing pipe is used to replace the conventional ejector pipe, and the inner diameter of the mixing pipe remains unchanged from the air intake end to the air outlet end of the mixing pipe. Compared with the existing ejector pipe, such a mixing pipe has a simpler structure, which is not only convenient for molding and manufacturing, but also can reduce the overall cost. The mixing pipe is connected to the air intake assembly through a connecting pipe. Compared with the conventional ejector pipe, the connecting pipe has a simpler structure and lower cost, so the overall cost can be further reduced.

[0006] Exemplarily, the nozzle opening is located in the mixing pipe, the air inlet has a first end close to the air inlet end and a second end away from the air inlet end, and the nozzle opening is located between the first end and the air inlet end in the axial direction of the mixing pipe. When the nozzle opening is located between the first end and the air inlet end in the axial direction, the nozzle opening will not block the external air from entering the mixing pipe from the air inlet. When the gas enters the mixing pipe, more external air can be driven to enter the mixing pipe from the air inlet, which can ensure that the amount of air required to form the gas-air mixed gas is sufficient, so that the effect of forming the gas-air mixed gas through the mixing pipe can be better.

[0007] Exemplarily, the axial spacing A between the nozzle opening and the first end is not greater than 2 mm. The axial spacing A between the nozzle opening and the first end in the axial direction is not greater than 2 mm, which can ensure that the gas entering the gas mixing pipe can drive the external air to enter the gas mixing pipe from the air inlet, thereby ensuring that a gas-air mixed gas can be formed through the gas mixing pipe. The gas flow rate flowing in the gas mixing pipe to the vicinity of the air inlet is relatively large, which can also make the effect of forming a gas-air mixed gas better.

[0008] Exemplarily, the nozzle opening is located in the mixing pipe, the air inlet has a first end close to the air inlet end and a second end away from the air inlet end, and the nozzle opening is located between the first end and the second end in the axial direction of the mixing pipe. In the axial direction, when the nozzle opening is located between the first end and the second end, the gas flowing out of the nozzle opening can flow near the air inlet at a relatively high flow rate, so that the ability to drive the external air from the air inlet into the mixing pipe through the air pressure difference is stronger, and more external air can be driven into the mixing pipe, so that the effect of forming a gas-air mixed gas in the mixing pipe is better.

[0009] Exemplarily, the axial spacing B between the nozzle opening and the first end is not greater than 2 mm. When the axial spacing B between the nozzle opening and the first end in the axial direction is not greater than 2 mm, the gas flowing out of the nozzle opening can flow near the air inlet at a relatively high flow rate, that is, the ability to drive the external air into the mixing pipe from the air inlet through the air pressure difference is relatively strong, so that the jet component has less obstruction to the external air entering the mixing pipe.

[0010] Exemplarily, the nozzle opening is located in the mixing pipe, the air inlet has a first end close to the air inlet end and a second end away from the air inlet end, and the nozzle opening is aligned with the first end in the axial direction of the mixing pipe. The nozzle opening is aligned with the first end in the axial direction, the nozzle opening will not block the external air from entering the mixing pipe from the air inlet, and the gas flowing out of the nozzle opening can flow near the air inlet at a higher flow rate, so that the ability to drive the external air from the air inlet into the mixing pipe through the air pressure difference is stronger, and more external air can be driven into the mixing pipe, and the effect of forming a gas-air mixed gas in the mixing pipe is better.

[0011] Exemplarily, the length of the air inlet in the axial direction of the gas mixing pipe is 8 to 12 mm. When the length of the air inlet in the axial direction is 8 to 12 mm, the air inlet is equivalent to a sufficiently large opening on the wall of the gas mixing pipe, and the external air can enter the gas mixing pipe through such an air inlet, and the amount of air entering the gas mixing pipe can meet the air volume required for forming the outer ring small fire combustion; the gas in the gas mixing pipe is not easy to flow out from such an air inlet, thereby avoiding the safety hazard of the gas-air mixed gas flowing out of the air inlet to the outside of the burner.

[0012] For example, on a plane perpendicular to the central axis of the mixing pipe, the air inlet is an arc-shaped notch. Such an air inlet is easy to process, and the wall of the mixing pipe is provided with such an air inlet, so the overall structure can be simpler and easier to implement.

[0013] For example, the line between the two ends of the circular arc notch is used as the cutting line, the vertical distance from the vertex of the circular arc notch to the cutting line is D, the cross-sectional radius of the mixing pipe is R, and the vertical distance D satisfies 0.4R≤D≤0.6R. The vertical distance D satisfies 0.4R≤D≤0.6R, and the air inlet is equivalent to a sufficiently large opening on the wall of the mixing pipe. External air can enter the mixing pipe through such an air inlet, and the amount of air entering the mixing pipe can meet the air volume required for forming the outer ring small fire combustion; the gas in the mixing pipe is not easy to flow out from such an air inlet, thereby avoiding the safety hazard of the gas-air mixed gas flowing out of the air inlet to the outside of the burner.

[0014] For example, the nozzle opening is located in the gas mixing pipe, and on a plane perpendicular to the central axis of the gas mixing pipe, the projection of the nozzle opening and the vertex of the arc-shaped notch are located on both sides of the central axis of the gas mixing pipe. By making the nozzle opening relatively far away from the air inlet, it is possible to prevent the gas flowing out of the nozzle opening and the gas in the gas mixing pipe from flowing out of the air inlet to the outside of the gas mixing pipe, thereby avoiding the potential safety hazard of the gas-air mixed gas flowing out of the air inlet to the outside of the burner.

[0015] Exemplarily, a baffle is provided in the gas mixing pipe, and the baffle is connected to the edge of the air inlet. When gas reflux occurs in the burner, for example, the gas-air mixture in the second gas outlet pipe refluxes, the gas-air mixture will be blocked by the baffle, so the refluxed gas-air mixture will not be able to flow back to the outside of the burner through the air inlet, thereby avoiding the risk of gas reflux and potential safety hazards. Such a burner is safer when in use. Moreover, the gas mixing pipe provided with the baffle can effectively prevent the gas in the burner from flowing back from the gas mixing pipe even if the length of the gas mixing pipe is short, and the length of the gas mixing pipe can be shorter than that of the existing low-fire ejector pipe, thereby reducing the overall cost of the burner.

[0016] For example, in the axial direction of the gas mixing pipe, the air inlet has a first end close to the air inlet end and a second end away from the air inlet end, and the baffle is connected to the second end. When gas reflux occurs in the burner head, the refluxed gas usually flows from the vicinity of the second end toward the air inlet, and the baffle arranged in the second section can effectively block the refluxed gas in the burner head.

[0017] Exemplarily, on the cross section of the gas mixing pipe, the baffle has a first projection length T1, the air inlet has a second projection length T2, the inner wall of the gas mixing pipe has a circular cross section, the diameter of the circular cross section is the inner diameter S, and the first projection length T1, the second projection length T2 and the inner diameter S of the gas mixing pipe 130 satisfy: T1 is less than T2 and the ratio of T2 to S is not greater than 2 / 3. The first projection length T1 is less than the second projection length T2, which can prevent the baffle from blocking the external air from entering the gas mixing pipe, and can also prevent the baffle from interfering with the mixing of gas and air in the gas mixing pipe, and can ensure that the gas-air mixture can flow in the gas mixing pipe to the first outlet pipe. The ratio of the second projection length T2 to the inner diameter S of the gas mixing pipe is not greater than 2 / 3, which can prevent the air inlet from being an overly large opening on the pipe wall when the second projection length T2 is too large, and prevent the gas from entering the gas mixing pipe due to the excessively large air inlet and flowing directly to the outside of the burner through the air inlet, thereby avoiding the safety hazard caused by gas leakage.

[0018] Exemplarily, the baffle is constructed as a plate-shaped member extending away from the air inlet and toward the first air outlet. The baffle extending away from the air inlet and toward the first air outlet can effectively block the backflowing gas, thereby avoiding the safety hazard caused by the backflow of gas. The baffle structure in the form of a plate-shaped member is simpler and easier to implement, and the baffle in the form of a plate-shaped member has a better blocking effect on the backflowing gas, and the backflowing gas is not easy to flow around the side of the baffle.

[0019] For example, the angle F between the baffle and the tangent plane above the mixing pipe is 25° to 40°. Such a baffle has a good blocking effect on the backflow gas and will not affect the normal flow of the gas-air mixture flowing from the mixing pipe to the first outlet pipe.

[0020] Exemplarily, the burner head includes an ejector pipe, which is connected to the gas mixing pipe side by side below the base body, and a second gas outlet pipe is provided on the base body, the ejector pipe is connected to the second gas outlet pipe, wherein the length of the ejector pipe is greater than the length of the gas mixing pipe. Even if the length of the gas mixing pipe is less than the length of the existing ejector pipe, the gas-air mixture generated by such a gas mixing pipe can also meet the needs of low-fire combustion. Therefore, such a burner head does not need to be provided with a low-fire ejector pipe, and the gas mixing pipe is shorter than the existing low-fire ejector pipe, which is not only convenient for molding and manufacturing, but also can reduce the overall cost.

[0021] Exemplarily, the length of the gas mixing tube is N, the length of the ejector tube is M, and the ratio of N to M is not greater than 1 / 2. When the ratio of the length of the gas mixing tube N to the length of the ejector tube M is not greater than 1 / 2, the gas-air mixed gas formed by the gas mixing tube can also meet the needs of low-fire combustion, and in such a burner, the overall cost can be further reduced.

[0022] For example, the first gas outlet pipe, the second gas outlet pipe, the ejector pipe, the gas mixing pipe and the base are an integrated structure. Such a burner head has a stronger integrity, and because it is an integrated structure, the stability and strength of the overall structure can be better; because the gas mixing pipe can have a shorter length, when the second gas outlet pipe, the first gas outlet pipe, the ejector pipe, the gas mixing pipe and the base are an integrated structure, the overall structure can occupy a smaller space and the overall cost can also be lower.

[0023] For example, the jet component is threadedly connected to the air inlet end. By designing the threaded connection position between the jet component and the air inlet end, the jet component can be connected to a suitable position on the air inlet end of the mixing pipe. The nozzle opening can be formed on the jet component, and the nozzle opening can also be located at a suitable position accordingly, so that the gas flowing out of the nozzle opening can drive the external air into the mixing pipe with a stronger ability.

[0024] Exemplarily, the connecting pipe is threadedly connected to the air intake assembly. The connecting pipe is threadedly connected to the air intake assembly, and the overall structure is simpler and easier to implement. Since the connecting pipe may include a portion made of a material with a certain flexibility, for example, the connecting pipe may include an aluminum tube, the connecting pipe is connected to the air intake assembly in the form of a threaded connection, and the connecting pipe can be slightly deformed to adapt to the air intake assembly, thereby ensuring the overall sealing.

[0025] A series of simplified concepts are introduced in the utility model content, which will be further described in detail in the detailed implementation section. The utility model content section does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0026] The advantages and features of the present invention are described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The drawings show the implementation of the present invention and its description, and are used to explain the principle of the present invention. In the drawings,

[0028] Figure 1 It is a perspective view of a burner according to an exemplary embodiment of the present utility model, wherein the flame distributor is hidden;

[0029] Figure 2 for Figure 1 A top view of the burner is shown;

[0030] Figure 3 is a cross-sectional view of a burner according to an exemplary embodiment of the present utility model;

[0031] Figure 4 is a cross-sectional view of a burner according to an exemplary embodiment of the present utility model;

[0032] Figure 5 is a three-dimensional diagram of a burner according to an exemplary embodiment of the present invention;

[0033] Figure 6 for Figure 5 A cross-sectional view of the burner shown in one section plane; and

[0034] Figure 7 for Figure 5 The burner is shown in cross-section in another section plane.

[0035] The above drawings include the following reference numerals:

[0036] 100, stove head; 110, seat body; 111, first air outlet pipe; 112, second air outlet pipe; 113, soup plate mounting hole; 114, ignition needle mounting hole; 115, thermocouple mounting hole; 120, ejector tube; 130, gas mixing tube; 131, air inlet end; 1311, air inlet port; 132, tube wall; 133, air inlet; 1331, first end; 1332, second end; 134, air outlet end; 140, baffle; 200, air inlet assembly; 210, high fire channel; 310, jet component; 320, nozzle port; 330, connecting pipe. DETAILED DESCRIPTION

[0037] In the following description, a large number of details are provided so that the present invention can be thoroughly understood. However, it will be appreciated by those skilled in the art that the following description only illustrates preferred embodiments of the present invention, and the present invention can be implemented without one or more of such details. In addition, in order to avoid confusion with the present invention, some technical features known in the art are not described in detail.

[0038] The utility model provides a burner. Figure 1 , Figure 2 , Figure 3 and Figure 4The burner may include a base body 110, a gas mixing pipe 130, a connecting pipe 330 and an air intake assembly 200. The gas mixing pipe 130 may be connected to the base body 110. The base body 110 may be formed by an integrated process with the gas mixing pipe 130, or may be separately processed and connected together by welding, threaded connection or any other suitable form. The base body 110 and the gas mixing pipe 130 may be referred to as a burner head 100.

[0039] The burner may further include a flame distributor (not shown in the figure), the base 110 may provide support for the flame distributor, and the flame distributor may be connected to the top of the base 110. Figure 5 , Figure 6 and Figure 7 , a first air outlet pipe 111 may be provided on the seat body 110. The first air outlet pipe 111 may be connected to the ignition distributor. A soup plate mounting hole 113, an ignition needle mounting hole 114 and a thermocouple mounting hole 115 may be provided on the seat body 110. The ignition needle may be mounted to the ignition needle mounting hole 114 by threaded connection or any other suitable form. Similarly, the thermocouple may also be mounted to the thermocouple mounting hole 115 by threaded connection or any other suitable form. After the ignition needle and the thermocouple are installed, the soup plate may be mounted to the soup plate mounting hole 113 by threaded connection of fasteners or any other suitable form.

[0040] The gas mixing pipe 130 can be connected to the bottom of the base body 110. When the furnace head 100 is installed, the bottom of the base body 110 can be the bottom in the gravity direction. From the gas inlet end 131 to the gas outlet end 134 of the gas mixing pipe 130, the inner diameter of the gas mixing pipe 130 can remain unchanged, that is, the inner diameter of the gas mixing pipe 130 remains unchanged in its own axial direction. Such a gas mixing pipe 130 can be regarded as a straight pipe, and the airflow flowing in such a gas mixing pipe 130 is equivalent to flowing in a straight pipe. Such a gas mixing pipe 130 has a different structure from a conventional ejector pipe. Since there is no change in the inner diameter similar to a conventional ejector pipe, the cost of such a gas mixing pipe 130 can be much lower than that of a conventional ejector pipe.

[0041] The seat body 110 may be provided with a first air outlet pipe 111, and the air mixing pipe 130 may have an air inlet end 131 and an air outlet end 134, and the air outlet end 134 may be connected to the first air outlet pipe 111. The airflow entering the air mixing pipe 130 from the air inlet end 131 may enter the first air outlet pipe 111 through the air outlet end 134.

[0042] The mixing pipe 130 may be provided with an air inlet 133 on the pipe wall 132 between the air inlet end 131 and the air outlet end 134. The air inlet end 131 may be connected to a jet component 310. The jet component 310 may have a nozzle opening 320. The nozzle opening 320 may be provided near the air inlet 133. The nozzle opening 320 may be separately processed from the jet component 310 and connected together by various forms such as welding, clamping or threaded connection. The nozzle opening 320 may also be formed by integrated processing with the jet component 310. The jet component 310 may be connected to the air inlet end 131 by threaded connection, interference fit or any other suitable form. The air inlet end 131 may be provided with an air inlet 1311. The jet component 310 may be connected to the air inlet 1311 and inserted into the mixing pipe 130 through the air inlet 1311, so that the nozzle opening 320 may be located in the mixing pipe 130. The airflow passing through the jet element 310 and flowing into the mixing pipe 130 may first pass through the jet element 310 and then reach the nozzle opening 320, and then flow into the mixing pipe 130 from the nozzle opening 320. The airflow velocity ejected from the nozzle opening 320 is relatively high, and the airflow velocity will gradually decrease after the airflow flows into the mixing pipe 130. The nozzle opening 320 is close to the air inlet 133, so that the airflow ejected from the jet element 310 can still have a relatively high velocity when it flows near the air inlet 133.

[0043] The air intake assembly 200 can be connected to the mixing pipe 130 through a connecting pipe 330. One end of the connecting pipe 330 can be connected to the air intake assembly 200, and the other end of the connecting pipe 330 can be provided with a jet component 310, and a nozzle port 320 can be provided on the jet component 310. When one end of the connecting pipe 330 is connected to the air intake assembly 200, it can be directly connected to the air intake valve body of the air intake assembly 200. The connecting pipe 330 can be in any suitable form such as a hose, for example, the connecting pipe 330 can be in the form of an aluminum tube. The gas transported by the air intake assembly 200 can reach the jet component 310 through the connecting pipe 330, and enter the mixing pipe 130 through the nozzle port 320 on the jet component 310. The flow rate of the gas when entering the mixing pipe 130 from the nozzle port 320 is relatively large, so that a pressure difference can be formed with the external air. The air inlet 133 can be an opening of any form on the tube wall 132. Under the action of the air pressure difference, the flowing gas will drive the external air into the mixing tube 130 through the air inlet 133, so that the gas and air can be mixed to form a gas-air mixed gas to support combustion.

[0044] The first gas outlet pipe 111 can be connected to the ignition distributor. After the gas inlet assembly 200 delivers the gas to the burner 100, the gas can be mixed with the air through the gas mixing pipe 130 to form a gas-air mixed gas. The gas-air mixed gas formed through the gas mixing pipe 130 can flow from the first gas outlet pipe 111 to the ignition distributor, and can burn at the ignition distributor to generate flames.

[0045] In the existing burners, the burner head is usually provided with an ejector tube. In the burner head 100 provided by the utility model, after the gas enters the gas mixing tube 130, it can also drive the external air to enter the gas mixing tube 130 through the air inlet 133, and form a gas-air mixed gas in the gas mixing tube 130 to support combustion. Compared with the conventional ejector tube, such a gas mixing tube 130 has a simpler structure and lower cost.

[0046] In the burner provided by the utility model, after the gas enters the connecting pipe 330 from the air intake assembly 200 and enters the mixing pipe 130 through the nozzle opening 320 on the jet component 310, since the gas flow rate flowing out from the nozzle opening 320 is relatively large, the pressure difference can be used to attract external air into the mixing pipe 130 at the air inlet 133, so that the gas and air can be mixed in the mixing pipe 130. In such a burner, the conventional ejector pipe is replaced by the mixing pipe 130, and the inner diameter of the mixing pipe 130 remains unchanged from the air intake end 131 to the air outlet end 134 of the mixing pipe 130. Compared with the existing ejector pipe, such a mixing pipe 130 has a simpler structure, which is not only convenient for molding and manufacturing, but also can reduce the overall cost. The mixing pipe 130 is connected to the air intake assembly 200 through the connecting pipe 330. Compared with the conventional ejector pipe, the connecting pipe 330 has a simpler structure and lower cost, so the overall cost can be further reduced.

[0047] In one embodiment of the present invention, see Figure 1 and Figure 2 The burner head 100 may include an ejector tube 120, and the ejector tube 120 and the gas mixing tube 130 may be connected side by side below the base 110. The axis of the ejector tube 120 and the axis of the gas mixing tube 130 may be coplanar or non-coplanar, and the axes of the two may be parallel to each other or may be at a certain angle to each other. The bottom of the base 110 means that when the burner head 100 is installed, the ejector tube 120 and the gas mixing tube 130 are connected to the bottom of the base 110, and when the burner head 100 is installed, the bottom of the base 110 may be the bottom in the direction of gravity. The ejector tube 120 may be similar to a conventional ejector tube, or may be designed into any suitable form as required, and the gas entering the ejector tube 120 may also be mixed with air to form a gas-air mixed gas to support combustion. A second gas outlet pipe 112 may be provided on the base 110, and the second gas outlet pipe 112 may be connected to the ignition distributor. The fuel gas-air mixture formed through the ejector pipe 120 can flow to the ignition distributor through the second gas outlet pipe 112 .

[0048] See also Figure 2, the length of the ejector tube 120 (length M shown in the figure) can be greater than the length of the mixing tube 130 (length N shown in the figure). Since the power of the inner ring small fire is relatively small, the amount of gas and air required to burn the inner ring small fire are relatively small. The length N of the mixing tube 130 can be relatively small, and a gas-air mixture sufficient to meet the combustion requirements of the inner ring small fire can still be formed through the smaller length of the mixing tube 130. The length M of the ejector tube 120 can be greater than the length N of the mixing tube 130, that is, the length N of the mixing tube 130 can be less than the length of a conventional ejector tube. Exemplarily, the form of the mixing tube 130 can be different from that of a conventional ejector tube. For example, the mixing tube 130 can be in the form of a cylindrical straight tube, and only an air inlet 133 is required to be provided on the tube wall 132.

[0049] The first gas outlet pipe 111 can be connected to the inner ring fire cover of the ignition distributor, and the second gas outlet pipe 112 can be connected to the outer ring fire cover of the ignition distributor. The end of the ejector pipe 120 away from the base body 110 can be connected to the air intake assembly 200. The air intake assembly 200 can be provided with a large fire channel 210, and the end of the ejector pipe 120 away from the base body 110 can be connected to the large fire channel 210. After the external gas enters the air intake assembly 200, it can be transported to the ejector pipe 120 through the large fire channel 210. After the gas enters the ejector pipe 120, a gas-air mixture can be formed in the ejector pipe 120. The gas-air mixture can flow from the second outlet pipe 112 to the outer ring fire cover of the ignition distributor, and can burn at the outer ring fire cover to produce an outer ring large fire; the gas entering the air intake assembly 200 can also be transported to the jet component 310 through the connecting pipe 330, and sprayed into the mixing pipe 130 through the nozzle port 320. The gas entering the mixing pipe 130 will drive the external air to enter the mixing pipe 130 through the air inlet 133, thereby forming a gas-air mixture in the mixing pipe 130. The formed gas-air mixture can flow from the first outlet pipe 111 to the inner ring fire cover of the ignition distributor, and can burn at the inner ring fire cover to produce an inner ring small fire. Since the amount of gas and air required for small fire combustion is relatively small, even if the length of the mixing pipe 130 is less than that of the existing ejector pipe, the gas-air mixture generated by such a mixing pipe 130 can meet the needs of small fire combustion. Therefore, such a burner head 100 does not need to be provided with a low-fire ejector tube, and the gas mixing tube is shorter than the existing low-fire ejector tube, which is not only convenient for molding and manufacturing, but also can reduce the overall cost.

[0050] In one embodiment of the present invention, see Figure 2, the ratio of the length N of the mixing tube 130 to the length M of the ejector tube 120 may be no greater than 1 / 2. The length of a conventional ejector tube is usually 60 to 80 mm, for example, the length of a conventional ejector tube may be 60 mm, 64 mm, 70 mm, 77 mm or 80 mm. In the burner head 100 provided by the utility model, the length N of the mixing tube 130 may be 20 to 30 mm, for example, the length N of the mixing tube 130 may be 20 mm, 23 mm, 24 mm or 30 mm. When the ratio of the length N of the mixing tube 130 to the length M of the ejector tube 120 is no greater than 1 / 2, the gas-air mixed gas formed through the mixing tube 130 can also meet the needs of low-fire combustion, and in such a burner head 100, the overall cost can be further reduced.

[0051] In one embodiment of the utility model, the first gas outlet pipe 111, the second gas outlet pipe 112, the ejector pipe 120, the gas mixing pipe 130 and the base body 110 can be an integrated structure. Such a burner head 100 has a stronger integrity, and because it is an integrated structure, the stability and strength of the overall structure can be better; because the gas mixing pipe 130 can have a shorter length, when the second gas outlet pipe 112, the first gas outlet pipe 111, the ejector pipe 120, the gas mixing pipe 130 and the base body 110 are an integrated structure, the overall structure can occupy a smaller space and the overall cost can also be lower.

[0052] In one embodiment of the present invention, see Figure 3 The jet assembly 300 may have a nozzle opening 320, and the nozzle opening 320 may be located in the mixing pipe 130. The air inlet 133 may have a first end 1331 close to the air inlet end 131 and a second end 1332 away from the air inlet end 131. The nozzle opening 320 may be located between the first end 1331 and the air inlet end 131 in the axial direction of the mixing pipe 130 (direction XX in the figure). In the axial direction XX, when the nozzle opening 320 is located between the first end 1331 and the air inlet end 131, the nozzle opening 320 will not block the external air from entering the mixing pipe 130 from the air inlet 133. When the gas enters the mixing pipe 130, more external air can be driven to enter the mixing pipe 130 from the air inlet 133, which can ensure that the amount of air required for forming the gas-air mixed gas is sufficient, so that the effect of forming the gas-air mixed gas through the mixing pipe 130 can be better.

[0053] For example, the axial spacing A (shown as the distance A) between the nozzle opening 320 and the first end 1331 in the axial direction XX may be no greater than 2 mm. After the gas enters the gas mixing pipe 130 through the nozzle opening 320, as the gas flows in the gas mixing pipe 130 The flow rate of the gas will decrease, so when the axial spacing A between the nozzle opening 320 and the first end 1331 in the axial direction XX is large, it may cause the gas entering the gas mixing pipe 130 to flow to the vicinity of the air inlet 133. It is difficult to drive the external air to enter the gas mixing pipe 130 from the air inlet 133. The axial spacing A between the nozzle opening 320 and the first end 1331 in the axial direction XX is no greater than 2 mm, which can ensure that the gas entering the gas mixing pipe 130 can drive the external air to enter the gas mixing pipe 130 from the air inlet 133, thereby ensuring that a gas-air mixed gas can be formed through the gas mixing pipe 130, and the gas flow rate flowing in the gas mixing pipe 130 to the vicinity of the air inlet 133 is large, which can also make the effect of forming a gas-air mixed gas better.

[0054] In one embodiment of the present invention, see Figure 4 The jet assembly 300 may have a nozzle opening 320, and the nozzle opening 320 may be located in the mixing pipe 130. The air inlet 133 may have a first end 1331 close to the air inlet end 131 and a second end 1332 away from the air inlet end 131. The nozzle opening 320 may be located between the first end 1331 and the second end 1332 in the axial direction XX of the mixing pipe 130. The gas has the highest flow rate when it flows out from the nozzle opening 320. As the flow distance of the gas in the mixing pipe 130 increases, the gas flow rate will decrease. Therefore, in the axial direction XX, when the nozzle opening 320 is located between the first end 1331 and the second end 1332, the gas flowing out from the nozzle opening 320 can flow near the air inlet 133 at a relatively large flow rate, so that the ability to drive the external air from the air inlet 133 into the mixing pipe 130 through the pressure difference is stronger, and more external air can be driven into the mixing pipe 130, so that the effect of forming a gas-air mixed gas in the mixing pipe 130 is better.

[0055] For example, the axial spacing B between the nozzle opening 320 and the first end 1331 in the axial direction XX may be no greater than 2 mm. When the axial spacing B between the nozzle opening 320 and the first end 1331 in the axial direction XX is large, the portion of the jet assembly 300 located between the first end 1331 and the second end 1332 in the axial direction XX may form a barrier to the external air entering the mixing pipe 130 from the air inlet 133. When the axial spacing B between the nozzle opening 320 and the first end 1331 in the axial direction XX is no greater than 2 mm, the jet assembly 300 can provide less barrier to the external air entering the mixing pipe 130 on the basis of ensuring that the gas flowing out of the nozzle opening 320 can flow near the air inlet 133 at a relatively high flow rate, that is, on the basis of ensuring that the ability to drive the external air from the air inlet 133 into the mixing pipe 130 through the air pressure difference is relatively strong.

[0056] In one embodiment of the utility model, the jet assembly 300 may have a nozzle opening 320, and the nozzle opening 320 may be located in the mixing pipe 130. The air inlet 133 may have a first end 1331 close to the air inlet end 131 and a second end 1332 away from the air inlet end 131. The nozzle opening 320 may be aligned with the first end 1331 in the axial direction XX of the mixing pipe 130. The nozzle opening 320 is aligned with the first end 1331 in the axial direction XX, and the nozzle opening 320 will not block the external air from entering the mixing pipe 130 from the air inlet 133, and the gas flowing out from the nozzle opening 320 may flow near the air inlet 133 at a relatively large flow rate, so that the ability to drive the external air from the air inlet 133 to enter the mixing pipe 130 through the air pressure difference is stronger, and more external air can be driven to enter the mixing pipe 130, and the effect of forming a gas-air mixed gas in the mixing pipe 130 is also better.

[0057] In one embodiment of the present invention, see Figure 3 , Figure 4 and Figure 6, the length of the air inlet 133 in the axial direction XX of the mixing pipe 130 (the length P shown in the figure) can be 8 to 12 mm. For example, the length P of the air inlet 133 in the axial direction XX can be 8 mm, 9 mm, 10.5 mm or 12 mm. Preferably, the length P of the air inlet 133 in the axial direction XX can be 10 mm. When the length P of the air inlet 133 in the axial direction XX is small, it is equivalent to that the opening on the pipe wall 132 of the mixing pipe 130 is small, and it is difficult for external air to enter the mixing pipe 130 through the small opening. When the length P of the air inlet 133 in the axial direction XX is large, the gas in the mixing pipe 130 may flow to the outside of the mixing pipe 130 at the air inlet 133. For example, when there is a gas-air mixed gas reflux in the mixing pipe 130, the refluxed gas-air mixed gas will flow from the air inlet 133 to the outside of the mixing pipe 130, which will result in insufficient amount of gas-air mixed gas flowing to the first outlet pipe 111 to support combustion, and there is a safety hazard. When the length P of the air inlet 133 in the axial direction XX is 8 to 12 mm, the air inlet 133 is equivalent to a sufficiently large opening on the tube wall 132 of the mixing tube 130, and external air can enter the mixing tube 130 through such an air inlet 133. The amount of air entering the mixing tube 130 can meet the air amount required for forming an outer ring small fire combustion; the gas in the mixing tube 130 is also not easy to flow out from such an air inlet 133, thereby avoiding the safety hazard of the gas-air mixed gas flowing out of the air inlet 133 to the outside of the burner head 100.

[0058] In one embodiment of the present invention, see Figure 7 The air inlet 133 may be an arc-shaped notch on a plane perpendicular to the central axis of the mixing pipe 130. Such an air inlet 133 is easy to process, and the wall 132 of the mixing pipe 130 is provided with such an air inlet 133, so that the overall structure can be simpler and easier to implement.

[0059] For example, on a plane perpendicular to the central axis of the mixing tube 130, the air inlet 133 may be an arc-shaped notch, with the line connecting the two ends of the arc-shaped notch as the cutting line, the vertical distance from the vertex of the arc-shaped notch to the cutting line as D, the cross-sectional radius of the mixing tube 130 as R, and the relationship between the vertical distances D and R may be: D = 0.4R, D = 0.45R, D = 0.5R, D = 0.55R, D = 0.6R, etc., or in other words, the vertical distances D and R may satisfy 0.4R ≤ D ≤ 0.6R. Figure 7As shown, the plane parallel to the paper is the plane perpendicular to the central axis of the mixing tube 130. Since the air inlet 133 is an opening on the tube wall 132 of the mixing tube 130, the opening of the air inlet 133 in the circumferential direction of the tube wall 132 will also affect the inflow of external air and the outflow of internal air. The opening size of the air inlet 133 on the outer circumference of the mixing tube 130 can be described by the ratio of the vertical distance D to the cross-sectional radius R of the mixing tube 130. It can be understood that the larger the vertical distance D is relative to the cross-sectional radius R, the larger the opening of the air inlet 133 in the circumferential direction of the mixing tube 130, and the smaller the ratio of the vertical distance D to the cross-sectional radius R, the smaller the opening of the air inlet 133 in the circumferential direction of the mixing tube 130. When the ratio of the vertical distance D to the cross-sectional radius R is small, the opening of the air inlet 133 in the circumferential direction is small, which is equivalent to a small opening on the tube wall 132 of the mixing tube 130, and it will be difficult for external air to enter the mixing tube 130 through the small opening. When the ratio of the vertical distance D to the cross-sectional radius R is large, the opening of the air inlet 133 in the circumferential direction is large, and the gas in the mixing tube 130 may flow from the air inlet 133 to the outside of the mixing tube 130. For example, when there is a gas-air mixed gas reflux in the mixing tube 130, the refluxed gas-air mixed gas will flow from the air inlet 133 to the outside of the mixing tube 130, which will result in insufficient gas-air mixed gas flowing to the first outlet pipe 111 to support combustion, and there is a safety hazard. The vertical distance D satisfies 0.4R≤D≤0.6R, and the air inlet 133 is equivalent to a sufficiently large opening on the tube wall 132 of the mixing tube 130. External air can enter the mixing tube 130 through such an air inlet 133, and the amount of air entering the mixing tube 130 can meet the air amount required for forming an outer ring small fire combustion; the gas in the mixing tube 130 is also not easy to flow out from such an air inlet 133, thereby avoiding the safety hazard caused by the gas-air mixed gas flowing out of the air inlet 133 to the outside of the burner head 100.

[0060] For example, see Figure 7The jet assembly 300 may have a nozzle opening 320, and the nozzle opening 320 may be located in the gas mixing tube 130. On a plane perpendicular to the central axis of the gas mixing tube 130, the projection of the nozzle opening 320 and the vertex of the arc-shaped notch (vertex C in the figure) may be located on both sides of the central axis of the gas mixing tube 130. In such a burner 100, the central axis of the nozzle opening 320 is not coaxial with the central axis of the gas mixing tube 130, and it can be considered that the nozzle opening 320 and the air inlet 133 are located on both sides of the central axis of the gas mixing tube 130, respectively, so that the nozzle opening 320 can be considered to be relatively far away from the air inlet 133. By making the nozzle opening 320 relatively far away from the air inlet 133, it can be prevented that the gas flowing out of the nozzle opening 320 and the gas in the gas mixing tube 130 flow out of the gas mixing tube 130 from the air inlet 133, thereby avoiding the potential safety hazard caused by the gas-air mixed gas flowing out of the air inlet 133 to the outside of the burner 100. For example, when the vertical distance D satisfies D=0.5R, the opening of the air inlet 133 on the outer circumference of the mixing pipe 130 is already relatively large. On this basis, the nozzle opening 320 needs to be relatively far away from the air inlet 133 to prevent the gas flowing out of the nozzle opening 320 and the gas in the mixing pipe 130 from flowing out of the air inlet 133 to the outside of the mixing pipe 130. This means that when 0.4R≤D≤0.6R, the nozzle opening 320 is farther away from the air inlet 133 than when D=0.5R.

[0061] In one embodiment of the present invention, see Figure 3 , Figure 4 ,and Figure 6, a baffle 140 may be provided in the gas mixing pipe 130, and the baffle 140 may be connected to the edge of the air inlet 133. The baffle 140 may be in the form of a plate or any other form. When gas reflux occurs in the burner head 100, for example, the gas-air mixed gas in the first gas outlet pipe 111 refluxes, the gas-air mixed gas will be blocked by the baffle 140, so the refluxed gas-air mixed gas will not be able to reflux to the outside of the burner head 100 through the air inlet 133, thereby avoiding the risk of gas reflux and potential safety hazards. Such a burner is also safer when in use. Moreover, the gas mixing pipe 130 provided with the baffle 140, even if the length of the gas mixing pipe 130 is short, the baffle 140 can effectively prevent the gas in the burner head 100 from refluxing from the gas mixing pipe 130, and the length of the gas mixing pipe 130 can be shorter than that of the existing small fire ejector pipe, thereby reducing the overall cost of the burner. After the gas enters the gas mixing pipe 130 from the injection assembly 300 and drives the external air to enter the gas mixing pipe 130 from the air inlet 133, a gas-air mixed gas can be formed in the gas mixing pipe 130, and the gas-air mixed gas can flow into the first gas outlet pipe 111 under the guidance of the baffle 140. In other words, the baffle 140 has two functions, the first function is to block the backflow of the gas-air mixed gas in the first gas outlet pipe 111, and the second function is to guide the gas-air mixed gas in the gas mixing pipe 130 to enter the first gas outlet pipe 111.

[0062] In one embodiment of the utility model, in the axial direction of the gas mixing pipe 130 (direction XX in the figure), the air inlet 133 has a first end 1331 close to the gas inlet end 131 and a second end 1332 away from the gas inlet end 131, and the baffle 140 is connected to the second end 1332. When gas reflux occurs in the burner head 100, the refluxed gas usually flows from the vicinity of the second end 1332 toward the air inlet 133, and the baffle 140 disposed at the second end 1332 can effectively block the refluxed gas in the burner head 100.

[0063] In one embodiment of the present invention, see Figure 3 , Figure 5 and Figure 6 In the cross section of the mixing pipe 130, the baffle 140 may have a first projection length T1, the air inlet 133 may have a second projection length T2, the inner wall of the mixing pipe 130 may have a circular cross section, and the diameter of the circular cross section may be the inner diameter S. The first projection length T1, the second projection length T2, and the inner diameter S of the mixing pipe 130 may satisfy: T1 is less than T2 and the ratio of T2 to S is not greater than 2 / 3. Figure 3 , Figure 5 and Figure 6As shown, the cross section of the mixing pipe 130 can be any plane perpendicular to the central axis of the mixing pipe 130. When the gas enters the mixing pipe 130, it will drive the external air to enter the mixing pipe 130 from the air inlet 133, and form a gas-air mixed gas in the mixing pipe 130. The first projection length T1 is smaller than the second projection length T2, which can prevent the baffle 140 from blocking the external air from entering the mixing pipe 130, and can also prevent the baffle 140 from interfering with the mixing of gas and air in the mixing pipe 130, and can ensure that the gas-air mixed gas can flow in the mixing pipe 130 to the first outlet pipe 111. The ratio of the second projected length T2 to the inner diameter S of the gas mixing pipe 130 is not greater than 2 / 3, so that when the second projected length T2 is too large, the air inlet 133 is not too large an opening on the pipe wall 132, and the gas entering the gas mixing pipe 130 due to the excessive size of the air inlet 133 is not directly flowed to the outside of the burner 100 through the air inlet 133, thereby avoiding the safety hazard caused by gas leakage.

[0064] In one embodiment of the present invention, see Figure 3 and Figure 5 , the baffle 140 can be constructed as a plate-shaped member extending in a direction away from the air inlet 133 and toward the first outlet pipe 111. When gas reflux occurs in the burner 100, the gas-air mixture in the first outlet pipe 111 can usually reflux toward the mixing pipe 130, and after reaching the mixing pipe 130, it refluxes to the outside of the burner 100 from the air inlet 133. The baffle 140 extending in a direction away from the air inlet 133 and toward the first outlet pipe 111 can effectively block the refluxed gas, thereby avoiding the safety hazards caused by gas reflux. The baffle 140 in the form of a plate-shaped member has a simpler structure and is easier to implement. In addition, the baffle 140 in the form of a plate-shaped member has a better blocking effect on the refluxed gas, and the refluxed gas is not easy to flow around the side of the baffle 140.

[0065] For example, see Figure 3 , Figure 4 and Figure 5, the length of the baffle 140 in the extension direction (the length L shown in the figure) can be 5 to 9 mm, for example, the length L of the baffle 140 can be 5 mm, 6 mm, 6.8 mm, 7.4 mm or 9 mm. Preferably, the length L of the baffle 140 can be 8 mm. When the length L of the baffle 140 in the extension direction is too long, it may affect the normal flow of the gas-air mixture, for example, it may block the gas-air mixture flowing from the mixing pipe 130 toward the first outlet pipe 111; when the length L of the baffle 140 in the extension direction is too short, the blocking effect on the backflow gas may be too poor or even unable to block the backflow gas. When the length L of the baffle 140 in the extension direction is 5 to 9 mm, the baffle 140 has a good blocking effect on the backflow gas and will not affect the normal flow of the gas-air mixture flowing from the mixing pipe 130 to the first outlet pipe 111.

[0066] For example, see Figure 3 , Figure 4 and Figure 5 , the angle (illustrated angle F) between the baffle 140 and the tangent plane above the mixing pipe 130 can be 25° to 40°, for example, the angle F can be 25°, 28°, 31°, 37° or 40°. Preferably, the angle F can be 35°. When the angle F between the baffle 140 and the tangent plane above the mixing pipe 130 is too large, the first projection length T1 of the baffle 140 on the cross section of the mixing pipe 130 is too large, and such a baffle 140 will interfere with the normal flow of the gas-air mixture flowing from the mixing pipe 130 to the first outlet pipe 111; when the angle F between the baffle 140 and the tangent plane above the mixing pipe 130 is too small, the first projection length T1 of the baffle 140 on the cross section of the mixing pipe 130 is too small, and such a baffle 140 has little blocking effect on the backflow gas. The angle F between the baffle 140 and the tangent plane above the mixing pipe 130 is 25° to 40°. Such a baffle 140 has a good blocking effect on the backflow gas and will not affect the normal flow of the gas-air mixture flowing in the mixing pipe 130 to the first outlet pipe 111.

[0067] In one embodiment of the utility model, the jet component 310 can be threadedly connected with the air inlet end 131. The air inlet end 131 may be provided with an air inlet port 1311, and an inner thread is provided on the inner side wall of the air inlet port 1311, and an outer thread is provided on the outer side wall of the jet component 310 on the jet assembly 300, and the jet component 310 is threadedly connected with the air inlet end 131 by the threaded cooperation of the inner thread and the outer thread, so that the jet component 300 and the mixing pipe 130 are threadedly connected. By designing the position of the air inlet port 1311 on the air inlet end 131, when the jet component 310 is threadedly connected with the air inlet end 131, the jet component 310 can be located at a suitable position relative to the mixing pipe 130, for example, the central axis of the jet component 310 can be not coaxial with the central axis of the mixing pipe 130. Therefore, by designing the threaded connection position of the jet component 310 and the air inlet end 131, the jet assembly 300 can be connected to a suitable position on the air inlet end 131 of the mixing pipe 130. The nozzle opening 320 may be formed on the jet element 310 , and the nozzle opening 320 may be located at a suitable position accordingly, so that the gas flowing out of the nozzle opening 320 can have a stronger ability to drive the external air into the gas mixing pipe 130 .

[0068] In one embodiment of the utility model, the connecting pipe 330 can be threadedly connected to the air intake assembly 200. The connecting pipe 330 can be directly connected to the air intake valve body on the air intake assembly 200. The air intake assembly 200 can also be provided with a connecting portion for connecting with the connecting pipe 330, the connecting portion can be cylindrical, and the outer side wall of the connecting portion can be provided with an external thread, and one end of the connecting pipe 330 connected to the air intake assembly 200 can be provided with a nut, and the nut can be threadedly matched with the external thread on the connecting portion, so that the connecting pipe 330 is threadedly connected to the air intake assembly 200. The connecting pipe 330 is threadedly connected to the air intake assembly 200, and the overall structure is simpler and easier to implement. Since the connecting pipe 330 can include a part made of a material with a certain flexibility, for example, the connecting pipe 330 can include an aluminum tube, the connecting pipe 330 is connected to the air intake assembly 200 in the form of a threaded connection, so that the connecting pipe 330 can be slightly deformed to adapt to the air intake assembly 200, thereby ensuring the overall sealing.

[0069] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "vertical", "horizontal", "top", "bottom", etc. are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside" and "outside" refer to the inside and outside relative to the contours of each component itself.

[0070] For ease of description, regional relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the regional positional relationship between one or more components or features shown in the figure and other components or features. It should be understood that regional relative terms include not only the orientation of the components as described in the figure, but also different orientations in use or operation. For example, if the components in the accompanying drawings are inverted as a whole, the components "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Therefore, the exemplary term "above" may include both "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this article is intended to include all of these situations.

[0071] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, parts, components and / or combinations thereof.

[0072] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0073] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the utility model is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of protection claimed by the utility model. The protection scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A burner, characterized in that: It includes a seat body, a mixing pipe, a connecting pipe and an intake assembly; The seat body has a first air outlet pipe, the air mixing pipe has an air inlet end and an air outlet end, the air outlet end is connected to the first air outlet pipe, and the inner diameter of the air mixing pipe is constant from the air inlet end to the air outlet end; The mixing pipe is provided with an air inlet on the pipe wall between the air inlet end and the air outlet end; One end of the connecting pipe is connected to the air intake assembly, and the other end of the connecting pipe is provided with a jet component, the jet component has a nozzle opening, the jet component is connected to the air intake end, and the nozzle opening is provided close to the air inlet.

2. The burner according to claim 1, characterized in that The nozzle opening is located in the mixing pipe, the air inlet has a first end close to the intake end and a second end away from the intake end, and the nozzle opening is located between the first end and the intake end in the axial direction of the mixing pipe.

3. The burner according to claim 2, characterized in that: An axial distance A between the nozzle opening and the first end is no greater than 2 mm.

4. The burner according to claim 1, characterized in that The nozzle opening is located in the mixing pipe, the air inlet has a first end close to the intake end and a second end away from the intake end, and the nozzle opening is located between the first end and the second end in the axial direction of the mixing pipe.

5. The burner according to claim 4, characterized in that An axial distance B between the nozzle opening and the first end is no greater than 2 mm.

6. The burner according to claim 1, characterized in that The nozzle opening is located in the mixing pipe, the air inlet has a first end close to the intake end and a second end away from the intake end, and the nozzle opening is aligned with the first end in the axial direction of the mixing pipe.

7. The burner according to claim 1, characterized in that The length of the air inlet in the axial direction of the mixing pipe is 8 to 12 mm.

8. The burner according to claim 1, characterized in that On a plane perpendicular to the central axis of the mixing pipe, the air inlet is an arc-shaped notch.

9. The burner according to claim 8, characterized in that The connecting line between the two ends of the arc-shaped notch is used as the cutting line, the vertical distance from the vertex of the arc-shaped notch to the cutting line is D, the cross-sectional radius of the mixing pipe is R, and the vertical distance D satisfies 0.4R≤D≤0.6R.

10. The burner according to claim 9, characterized in that The nozzle opening is located in the mixing pipe. On a plane perpendicular to the central axis of the mixing pipe, the projection of the nozzle opening and the vertex of the arc-shaped notch are located on both sides of the central axis of the mixing pipe respectively.

11. The burner according to claim 1, characterized in that A baffle is arranged in the mixing pipe, and the baffle is connected to the edge of the air inlet.

12. The burner according to claim 11, characterized in that In the axial direction of the mixing pipe, the air inlet has a first end close to the air intake end and a second end away from the air intake end, and the baffle is connected to the second end.

13. The burner according to claim 11, characterized in that On the cross section of the mixing pipe, the baffle has a first projection length T1, the air inlet has a second projection length T2, the inner wall of the mixing pipe has a circular cross section, the diameter of the circular cross section is an inner diameter S, and the first projection length T1, the second projection length T2 and the inner diameter S of the mixing pipe (130) satisfy: T1 is less than T2 and the ratio of T2 to S is not greater than 2 / 3.

14. The burner according to claim 11, characterized in that The blocking piece is configured as a plate-shaped member extending away from the air inlet and toward a direction close to the first air outlet pipe.

15. The burner according to claim 14, characterized in that The included angle F between the baffle and the tangent plane above the gas mixing pipe is 25° to 40°.

16. The burner according to claim 1, characterized in that The burner includes an ejector pipe, which is connected side by side with the gas mixing pipe below the base body. A second gas outlet pipe is provided on the base body, and the ejector pipe is communicated with the second gas outlet pipe, wherein the length of the ejector pipe is greater than that of the gas mixing pipe.

17. The burner according to claim 16, characterized in that The length of the mixing tube is N, the length of the ejector tube is M, and the ratio of N to M is not greater than 1 / 2.

18. The burner according to claim 16, characterized in that The first air outlet pipe, the second air outlet pipe, the ejector pipe, the gas mixing pipe and the seat body are an integrated structure.

19. The burner according to claim 1, characterized in that The jetting member is threadedly connected to the air inlet end.

20. The burner according to claim 1, characterized in that The connecting pipe is threadedly connected to the air intake assembly.

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