Combustor

Abstract

The utility model provides a burner which comprises a nozzle and an injection pipe, the nozzle is connected with the injection pipe in an inserted mode, the nozzle comprises an inserted connection section inserted into the injection pipe and a non-inserted connection section located outside the injection pipe, the burner further comprises a positioning structure, the positioning structure is arranged on the surface of the nozzle, the positioning structure comprises a positioning piece, and the positioning piece is arranged on the surface of the nozzle. The positioning piece protrudes in the radial direction of the nozzle relative to the nozzle; the positioning piece can be switched from a first position to a second position by sliding in the axial direction of the nozzle, when the positioning piece is located at the first position, the positioning piece is completely located at the non-insertion section of the nozzle, and when the positioning piece is located at the second position, the positioning piece is at least partially located at the insertion section of the nozzle; and the size of a gap between the positioning piece and the injection pipe is smaller than that of a gap between the nozzle and the injection pipe. When the positioning piece is located at the first position, the insertion section of the nozzle can be conveniently inserted into the injection pipe, after the nozzle is connected with the injection pipe in an inserted mode, the positioning piece is switched to the second position, and the eccentricity of the nozzle is reduced or the eccentricity of the nozzle is avoided.

Description

Technical Field

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

[0002] At present, the plug-in valve burner is widely used by manufacturers on gas cookers due to its low cost and easy installation. Generally, the nozzle is set on the plug-in valve, and the plug-in valve is connected by plugging into the central mounting hole of the ejector to complete the assembly. However, in order to facilitate installation and take into account the manufacturing tolerance of the parts, the central mounting hole of the ejector and the nozzle are gap-assembled, and the single-side gap of the circular hole can reach 1mm, which can easily cause the central axis of the nozzle and the ejector tube to deviate, thereby weakening the one-time ejection ability, resulting in excessive smoke and low combustion efficiency. If the assembly gap is reduced by reducing the diameter of the central mounting hole, some nozzles and the ejector tube may have an interference fit due to the existence of manufacturing tolerances, making it more difficult to assemble between these nozzles and the ejector tube, or even making it impossible to assemble these nozzles with the ejector tube. The effect of indirectly limiting the nozzle through other structures such as air flaps is not obvious. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a burner in order to overcome the defect in the prior art that the gap between the nozzle and the ejector tube is large, resulting in the nozzle and the ejector tube being not coaxial.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A burner, the burner comprises a nozzle and an ejector tube, the nozzle is plugged into the ejector tube, the nozzle comprises an insertion section inserted into the ejector tube and a non-insertion section located outside the ejector tube, the burner also comprises a positioning structure, the positioning structure is arranged on the nozzle surface, the positioning structure comprises a positioning member, the positioning member protrudes radially of the nozzle relative to the nozzle; the positioning member can be switched from a first position to a second position by sliding along the axial direction of the nozzle, when the positioning member is located at the first position, the positioning member is completely located in the non-insertion section of the nozzle, when the positioning member is located at the second position, the positioning member is at least partially located in the insertion section of the nozzle, and the gap size between the positioning member and the ejector tube is smaller than the gap size between the nozzle and the ejector tube.

[0006] By setting a positioning structure on the nozzle, the positioning structure includes a positioning member, the positioning member protrudes radially relative to the nozzle, when the positioning member is in the first position, the positioning member is located in the non-plug-in section, which facilitates the insertion of the plug-in section of the nozzle into the ejection tube, when the nozzle is plugged with the ejection tube, the positioning member is switched to the second position, so that the positioning member slides along the axial direction of the nozzle to the plug-in section, because the positioning member protrudes radially relative to the nozzle, the gap between the protruding positioning member and the ejection tube is smaller than the gap between the nozzle and the ejection tube. By setting a positioning member that can be switched from the first position to the second position, after the nozzle and the ejection tube are plugged, the gap between the positioning member set on the nozzle and the ejection tube that is switched to the second position is smaller than the gap between the nozzle and the ejection tube to limit the nozzle, thereby performing a secondary limit on the nozzle to reduce the eccentricity of the nozzle or avoid eccentricity of the nozzle without increasing the difficulty of plugging the nozzle and the ejection tube. This limiting method has obvious effects and is easy to install.

[0007] Preferably, at least two positioning structures are provided on the nozzle, and at least two positioning structures are symmetrically arranged with the axis of the nozzle as the center.

[0008] By providing at least two positioning structures and symmetrically arranging the at least two positioning structures with the axis of the nozzle as the center, the positioning structures can constrain the coaxiality of the nozzle in different directions.

[0009] Preferably, the positioning structure also includes a positioning groove, which is formed on the nozzle and extends from the end of the nozzle close to the nozzle outlet along the axial direction of the nozzle. The positioning member is embedded in the positioning groove to achieve axial sliding along the nozzle.

[0010] A positioning groove is provided on the nozzle, the positioning groove extends from the end of the nozzle close to the nozzle outlet along the axial direction of the nozzle, and the positioning piece is embedded in the positioning groove. The positioning groove guides the sliding of the positioning piece and prevents the positioning piece from sliding significantly along the circumferential direction of the nozzle.

[0011] Preferably, the positioning member includes a main body and a limiting portion, the limiting portion is arranged at the tail of the main body away from the nozzle outlet, the positioning groove has a cut-off structure, and the cut-off structure can contact the limiting portion to limit the movement of the positioning member toward the nozzle outlet.

[0012] By arranging a limiting part at the tail of the main body and a cut-off structure on the positioning groove, when the positioning piece slides toward the nozzle until the limiting part contacts the cut-off structure, the travel of the positioning piece is limited, preventing the positioning piece from detaching from the nozzle and falling into the ejection tube.

[0013] Preferably, the main body is a cylindrical structure.

[0014] Compared with other shapes, it is more convenient to process if the main body is set as a cylindrical structure.

[0015] Preferably, the main body and the limiting portion are arranged in parts, the limiting portion has a groove, and the tail portion of the main body is embedded in the groove.

[0016] By arranging a groove in the limiting part, the tail of the main body is embedded in the limiting part, so that the structural strength of the main body and the limiting part is higher.

[0017] Preferably, along the circumference direction of the nozzle, the limiting portion protrudes relative to the main body.

[0018] Compared with the technical solution in which the limiting part is protruded relative to the main body along the radial direction of the nozzle toward the axis of the nozzle, the technical solution in which the limiting part is protruded relative to the main body along the circumferential direction can avoid the side wall of the nozzle where the limiting part is located being too thin.

[0019] Preferably, the main body and the limiting portion are integrally formed.

[0020] By integrally forming the main body and the limiting portion, the overall structural strength of the positioning member is higher.

[0021] Preferably, the main body also includes a head portion close to the nozzle outlet of the nozzle, and along the direction from the head portion to the tail portion, the protruding size of the head portion relative to the nozzle gradually increases.

[0022] By arranging the head so that the closer it is to the tail, the larger its protrusion relative to the nozzle, when the positioning piece is slid toward the nozzle, the thinner the head is, the more convenient it is for the positioning piece to slide to the plug-in section. During the sliding process, its thickness gradually increases, which has a guiding effect on the movement of the positioning piece, and this structure can also accommodate the manufacturing tolerance of the positioning piece.

[0023] Preferably, the head is provided with a chamfer.

[0024] By arranging a chamfer on the head of the positioning piece, the positioning piece can be inserted into the ejector tube more easily.

[0025] Preferably, the portion of the positioning member embedded in the positioning groove is completely fitted with the positioning groove.

[0026] The part of the positioning piece embedded in the positioning groove is completely fitted with the positioning groove, so that the positioning piece is not easy to loosen in the positioning groove.

[0027] Preferably, when there is only one positioning structure, the positioning member is arranged at the lower right corner of the ejector pipe of the assembled burner.

[0028] By setting the positioning structure at the lower right corner when there is only one positioning piece, the nozzle is prevented from deviating toward the lower right corner, thereby minimizing the negative impact caused by the non-coaxiality between the nozzle and the ejector tube.

[0029] The positive and progressive effects of the utility model are:

[0030] By setting a positioning structure on the nozzle, the positioning structure includes a positioning member, the positioning member protrudes radially relative to the nozzle, when the positioning member is in the first position, the positioning member is located in the non-plug-in section, which facilitates the insertion of the plug-in section of the nozzle into the ejection tube, when the nozzle is plugged with the ejection tube, the positioning member is switched to the second position, so that the positioning member slides along the axial direction of the nozzle to the plug-in section, because the positioning member protrudes radially relative to the nozzle, the gap between the protruding positioning member and the ejection tube is smaller than the gap between the nozzle and the ejection tube. By setting a positioning member that can be switched from the first position to the second position, after the nozzle and the ejection tube are plugged, the gap between the positioning member set on the nozzle and the ejection tube that is switched to the second position is smaller than the gap between the nozzle and the ejection tube to limit the nozzle, thereby performing a secondary limit on the nozzle to reduce the eccentricity of the nozzle or avoid eccentricity of the nozzle without increasing the difficulty of plugging the nozzle and the ejection tube. This limiting method has obvious effects and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of the nozzle and positioning structure of Example 1 of the utility model.

[0032] Figure 2 This is a schematic structural diagram of the positioning structure of Example 1 of the utility model.

[0033] Figure 3 This is a schematic structural diagram of the positioning member of Example 1 of the utility model.

[0034] Figure 4 It is a schematic structural diagram of the nozzle and the ejection tube after being plugged in the embodiment 1 of the utility model.

[0035] Figure 5 For this utility model Figure 4 A magnified schematic diagram of A.

[0036] Figure 6 This is a schematic diagram of the structure of the burner of Example 1 of the utility model.

[0037] Figure 7 This is a schematic structural diagram of the nozzle and positioning structure of Example 2 of the utility model.

[0038] Description of reference numerals:

[0039] Burner 100

[0040] Nozzle 1

[0041] Positioning Structures 101

[0042] Positioning piece 11

[0043] Main body 111

[0044] Head 1111

[0045] Tail 1112

[0046] Limiting part 112

[0047] Positioning slot 12

[0048] Vent 13

[0049] Ejector tube 2

[0050] Axial O DETAILED DESCRIPTION

[0051] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0052] like Figure 1-Figure 6 As shown, this embodiment provides a burner 100, which includes a nozzle 1 and an ejector tube 2, wherein the nozzle 1 is plugged with the ejector tube 2, and the end of the nozzle 1 close to the ejector tube includes two regions, namely, a plug-in section inserted in the ejector tube 2 and a non-plug-in section located outside the ejector tube 2. The burner 100 also includes a positioning structure 101, which is arranged on the surface of the nozzle 1, and includes a positioning member 11, which protrudes radially relative to the nozzle 1. The positioning member 11 can be switched from a first position to a second position by sliding along the axial direction O of the nozzle 1, wherein when the positioning member 11 is located at the first position, the positioning member 11 is completely located in the non-plug-in section of the nozzle 1, and when the positioning member 11 is located at the second position, the end portion of the positioning member 11 moves out of the non-plug-in section and moves into the plug-in section of the nozzle 1, and at this time, the gap size between the positioning member 11 and the ejector tube 2 is smaller than the gap size between the nozzle 1 and the ejector tube 2.

[0053] A positioning structure 101 is provided on the nozzle 1, and the positioning structure 101 includes a positioning member 11, which protrudes radially relative to the nozzle 1. When the positioning member 11 is in the first position, the positioning member 11 is located in the non-plug-in section, which facilitates the plug-in section of the nozzle 1 to be inserted into the ejector tube 2. After the nozzle 1 is plugged into the ejector tube 2, the positioning member 11 is switched to the second position, so that the positioning member 11 slides along the axial direction O of the nozzle 1 to the plug-in section. Since the positioning member 11 protrudes radially relative to the nozzle 1, the gap between the protruding positioning member 11 and the ejector tube 2 is smaller than the gap between the nozzle 1 and the ejector tube 2. By providing a positioning member 11 that can be switched from a first position to a second position, after the nozzle 1 and the ejector tube 2 are plugged in, the positioning member 11 is switched to the second position so that the position of the nozzle 1 in the ejector tube 2 can be further limited by the positioning member 11. Therefore, without increasing the difficulty of plugging the nozzle 1 and the ejector tube 2, the nozzle 1 can be further limited by the positioning member 11 to reduce the eccentricity of the nozzle 1 relative to the ejector tube 2 or avoid eccentricity of the nozzle 1. This secondary limiting method has obvious effect in avoiding eccentricity and is easy to install.

[0054] Specifically, before the nozzle 1 and the ejector tube 2 are plugged and installed, the positioning member 11 is located at the non-plug-in section as a whole. At this time, the large gap between the nozzle 1 and the ejector tube 2 will not affect the plugging of the nozzle and the ejector tube, and the nozzle can be smoothly assembled with the ejector tube after aligning the nozzle installation hole on the ejector tube. After the nozzle 1 and the ejector tube 2 are plugged and installed, the positioning member 11 is slid so that a part of the positioning member 11 is located in the ejector tube to fill the gap between the nozzle 1 and the ejector tube 2, so that the size of the gap between the nozzle 1 and the ejector tube 2 is reduced, thereby realizing the secondary limit of the nozzle 1.

[0055] Specifically, in this embodiment, if Figure 1 As shown, the direction parallel to the straight line where the axis of the nozzle 1 is located is called the axial direction O, the positioning member 11 is located in the second position, and its portion close to the nozzle outlet 13 of the nozzle 1 is located in the plug-in section of the nozzle 1. Of course, in other embodiments, the positioning member 11 can also be configured so that when the positioning member 11 is located in the second position, the positioning member 11 is entirely located in the plug-in section of the nozzle 1. At this time, the axial length of the positioning member 11 should be less than or equal to the axial length of the plug-in section of the nozzle 1.

[0056] In this embodiment, if Figure 6 As shown, the burner 100 includes two nozzles 1 and two ejector tubes 2, and one nozzle 1 is plugged into one ejector tube 2. Figure 4 and Figure 5As shown, there is only one positioning structure 101 on one nozzle 1. In the case where only one positioning structure 101 is provided, it is preferred that the positioning structure 101 is provided at the lower right corner of the nozzle 1. The lower right corner here refers to the position of the positioning structure 101 at the lower right corner of the nozzle 1 when viewed from the direction from the nozzle 1 toward the ejection tube 2 (for details, refer to Figure 4 ), such a preferred position arrangement scheme is obtained through experimental tests and related theoretical calculations. Specifically, when the nozzle 1 and the ejector tube 2 are coaxially assembled, if the entire burner 100 is used in the northern hemisphere, due to the influence of the earth's rotation, the gas may tilt to the right in the ejector tube 2 after being ejected from the nozzle 1. Therefore, when the eccentric direction of the nozzle 1 is to the right, the eccentricity of the gas will be aggravated. After the gas enters the ejector tube 2 through the nozzle 1, it needs to be transported upward to the gas chamber for combustion. Therefore, when the nozzle 1 is eccentric downward, it is not conducive to the transportation of the gas. Therefore, by setting the positioning structure 101 in the lower right corner when there is only one positioning member 11, the nozzle 1 is completely prevented from shifting to the right and downward, which can minimize the negative impact caused by the non-coaxiality of the nozzle 1 and the ejector tube 2.

[0057] In this embodiment, if Figure 2 As shown, the positioning structure 101 also includes a positioning groove 12, which is formed on the nozzle 1. The positioning groove 12 extends from the end of the nozzle 1 close to the nozzle outlet 13 of the nozzle 1 along the axial direction O of the nozzle 1, and the positioning member 11 is embedded in the positioning groove 12 to achieve sliding along the axial direction O of the nozzle 1.

[0058] The nozzle 1 is provided with a positioning groove 12, which extends from the end of the nozzle 1 close to the nozzle opening 13 of the nozzle 1 along the axial direction O of the nozzle 1, and the positioning member 11 is embedded in the positioning groove 12. The positioning groove 12 guides the sliding of the positioning member 11 and prevents the positioning member 11 from sliding significantly along the circumferential direction of the nozzle 1. Specifically, Figure 2 and Figure 3 As shown, the positioning member 11 includes a main body 111 and a limiting portion 112, the main body 111 includes a head portion 1111 close to the nozzle 13 of the nozzle 1 and a tail portion 1112 away from the nozzle 13 of the nozzle 1, the limiting portion 112 is arranged at the tail portion 1112 of the main body 111, and the positioning groove 12 has a cut-off structure, which can contact the limiting portion 112 to limit the movement of the positioning member 11 toward the nozzle 13 of the nozzle 1.

[0059] By setting a limiting portion 112 at the tail portion 1112 of the main body 111 and setting a cut-off structure on the positioning groove 12, when the positioning member 11 slides toward the nozzle 13 until the limiting portion 112 contacts the cut-off structure, the travel of the positioning member 11 is limited, preventing the positioning member 11 from detaching from the nozzle 1 and falling into the ejection tube 2.

[0060] Specifically, in this embodiment, the main body 111 and the limiting portion 112 are integrally formed, and the integrally formed positioning member 11 has a higher structural strength.

[0061] Furthermore, in this embodiment, it can be seen from the figure that the main body 111 is a cylindrical structure. Compared with other shapes, it is more convenient to process the main body 111 as a cylindrical structure. Of course, in other embodiments, the main body 111 can also be other columnar structures or other shapes, as long as the positioning member 11 can slide to the second position so that the gap size between the positioning member 11 and the ejection tube 2 is smaller than the gap size between the nozzle 1 and the ejection tube 2.

[0062] Of course, in other embodiments, the main body 111 and the limiting part 112 can be provided in parts, a groove is provided in the limiting part 112, and the tail 1112 of the main body 111 is embedded in the groove. Connecting the main body and the limiting part in this way can make the structural strength of the positioning member 11 higher.

[0063] In this embodiment, along the circumferential direction of the nozzle 1, the limiting portion 112 protrudes relative to the main body 111, that is, along the circumferential direction of the nozzle 1, the limiting portion 112 is wider than the main body 111, and correspondingly, the end of the tail portion 1112 of the main body 111 of the positioning member 11 close to the end of the positioning groove 12 is wider than the end of the head portion 1111 of the main body 111 close to the positioning member 11, so as to cooperate with the positioning member 11, so that the entire positioning member 11 can be embedded in the positioning groove 12, and the position where the width changes in the positioning groove 12 is the cut-off structure of the positioning groove 12.

[0064] Compared with the technical solution in which the limiting portion 112 protrudes relative to the main body 111 along the radial direction of the nozzle 1 toward the axis of the nozzle 1, the technical solution in which the limiting portion 112 protrudes relative to the main body 111 along the circumferential direction can avoid the side wall of the nozzle 1 where the limiting portion 112 is located from being too thin.

[0065] Specifically, the portion of the positioning piece 11 embedded in the positioning groove 12 is completely in fit with the positioning groove 12, that is, along the circumferential and radial directions of the nozzle 1, the dimensions of the positioning groove 12 are completely consistent with the dimensions of the portion of the positioning piece 11 embedded in the positioning groove 12, so that the positioning piece 11 is not easy to loosen in the positioning groove 12.

[0066] In this embodiment, the size of the head 1111 protruding from the nozzle 1 gradually increases along the direction from the head 1111 on the main body 111 of the positioning member 11 toward the tail 1112, that is, the thickness of the head 1111 of the main body 111 protruding from the nozzle 1 gradually increases. When the positioning member 11 is slid toward the nozzle 13, the thinner the head 1111 is, the more convenient it is for the positioning member 11 to slide to the plug-in section. During the sliding process, its thickness gradually increases, which has a guiding effect on the movement of the positioning member 11, and this structure can also accommodate the manufacturing tolerance of the positioning member 11. Specifically, in this example, the head 1111 of the main body 111 is provided with a chamfer, so that the positioning member 11 is easier to insert into the ejector tube 2.

[0067] Example 2

[0068] This embodiment also provides a burner, whose structure is substantially the same as that of the burner provided in Embodiment 1, except that: Figure 7 As shown, in this embodiment, two positioning structures 101 are provided on a single nozzle 1, and the two positioning structures 101 are symmetrically arranged around the axis of the nozzle 1. By providing two positioning structures 101, the positioning structures 101 can constrain the coaxiality of the nozzle 1 in different directions, so as to ensure that the coaxiality of the nozzle 1 and the ejector tube 2 meets the requirements without increasing the difficulty of assembling the nozzle 1 and the ejector tube 2.

[0069] Of course, in other embodiments, a single nozzle 1 may also be provided with three or more positioning structures 101. In this case, all positioning structures 101 are symmetrically arranged with the axis of the nozzle 1 as the center, and further, all positioning structures 101 are evenly distributed on the surface of the nozzle 1. By evenly distributing these positioning structures 101 on the surface of the nozzle 1, constraints on multiple directions of the nozzle 1 are achieved, which has a better effect on ensuring the coaxiality of the nozzle 1 with the ejector tube 2.

[0070] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A burner, comprising a nozzle and an ejector tube, wherein the nozzle is plugged into the ejector tube, the nozzle comprising an inserting section inserted into the ejector tube and a non-inserting section located outside the ejector tube, characterized in that: The burner also includes a positioning structure, which is arranged on the surface of the nozzle. The positioning structure includes a positioning member, which protrudes radially relative to the nozzle along the nozzle; the positioning member can be switched from a first position to a second position by sliding along the axial direction of the nozzle, when the positioning member is located at the first position, the positioning member is completely located in the non-plug-in section of the nozzle, when the positioning member is located at the second position, the positioning member is at least partially located in the plug-in section of the nozzle, and the gap size between the positioning member and the ejector tube is smaller than the gap size between the nozzle and the ejector tube.

2. The burner according to claim 1, characterized in that At least two positioning structures are arranged on the nozzle, and at least two positioning structures are symmetrically arranged with the axis of the nozzle as the center.

3. The burner according to claim 1, characterized in that The positioning structure also includes a positioning groove, which is formed on the nozzle and extends from the end of the nozzle close to the nozzle outlet along the axial direction of the nozzle. The positioning member is embedded in the positioning groove to achieve axial sliding along the nozzle.

4. The burner according to claim 3, characterized in that The positioning member includes a main body and a limiting portion, wherein the limiting portion is arranged at the tail of the main body away from the nozzle outlet, and the positioning groove has a cut-off structure, which can contact the limiting portion to limit the movement of the positioning member toward the nozzle outlet.

5. The burner according to claim 4, characterized in that The main body is a cylindrical structure; And / or, the main body and the limiting part are arranged in parts, the limiting part has a groove, and the tail of the main body is embedded in the groove.

6. The burner according to claim 4, characterized in that Along the circumferential direction of the nozzle, the limiting portion protrudes relative to the main body.

7. The burner according to claim 4, characterized in that The main body and the limiting portion are integrally formed.

8. The burner according to claim 4, characterized in that The main body also includes a head portion close to the nozzle outlet of the nozzle, and along the direction from the head portion to the tail portion, the protruding size of the head portion relative to the nozzle gradually increases; the head portion is provided with a chamfer.

9. The burner according to claim 3, characterized in that The portion of the positioning piece embedded in the positioning groove is completely fitted with the positioning groove.

10. The burner according to any one of claims 3 to 9, characterized in that: When there is only one positioning structure, the positioning member is arranged at the lower right corner of the ejector pipe of the assembled burner.

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