Burner and gas stove containing the same

Abstract

The present invention provides a burner and a gas stove including the same, wherein the burner includes an ejector tube and a plug-in valve, wherein the plug-in valve includes a valve body, an adjusting portion, and a nozzle connected in sequence, wherein the nozzle is inserted into the ejector tube and tightly fits with the ejector tube, and the axis of the nozzle coincides with the axis of the ejector tube, and the adjusting portion and the valve body are clearance-fitted and nested with each other, and the adjusting portion can rotate relative to the valve body to drive the nozzle to rotate circumferentially. The nozzle of the burner in the invention is tightly fitted with the ejector tube, ensuring the concentricity of the nozzle and the ejector tube, ensuring the concentricity of the ejecting gas and the ejected gas, ensuring the ejection effect, and improving the combustion efficiency of the burner. In addition, while ensuring the ejection effect, since the nozzle is tightly fitted with the ejector tube, the clearance between the adjusting portion and the valve body is fitted to achieve the circumferential adjustability of the nozzle, so that the assembly tolerance is consumed on the plug-in valve, which is convenient for processing and installation.

Description

Technical Field

[0001] The invention relates to a burner and a gas stove comprising the burner. Background Art

[0002] The application of plug-in valves in burners is mainly to save costs. Compared with ordinary plug valves, plug-in valves are directly connected to the ejector pipe, saving the cost of connecting the gas pipe in the middle. However, due to the existence of tolerance size chain, in order to facilitate installation, the plug-in valve and the ejector pipe currently adopt a clearance fit (single-side clearance of about 2mm), which will bring about the problem of ejector eccentricity, which in turn leads to low combustion efficiency of the burner and poor flue gas performance. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the straight-insert valve and the ejector tube adopt clearance fit due to the existence of a tolerance dimension chain, thereby causing ejection eccentricity, and to provide a burner and a gas stove containing the same.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The present invention provides a burner, which includes an ejector tube and a plug-in valve. The plug-in valve includes a valve body, an adjustment part and a nozzle connected in sequence. The nozzle is inserted into the ejector tube and fits tightly with the ejector tube, and the axis of the nozzle coincides with the axis of the ejector tube. The adjustment part and the valve body are clearance-fitted and nested with each other. The adjustment part can rotate relative to the valve body to drive the nozzle to rotate circumferentially.

[0006] In this solution, the above-mentioned structure ensures a tight fit between the nozzle and the ejector tube, ensuring concentricity between the nozzle and the ejector tube, ensuring concentricity between the ejecting gas and the ejected gas, and ensuring effective ejection, thereby improving the burner's combustion efficiency and flue gas performance. Furthermore, while maintaining effective ejection, the close fit between the nozzle and the ejector tube, coupled with the clearance between the adjustment section and the valve body, allows for circumferential adjustability of the nozzle. This allows assembly tolerances to be absorbed by the in-line valve, facilitating processing and installation.

[0007] Preferably, a fixing portion is provided at one end of the valve body close to the regulating portion, and the gas enters the ejector tube after passing through the gas outlet of the valve body, the fixing portion, the regulating portion and the nozzle in sequence, and the fixing portion and the regulating portion are gap-fitted and nested with each other.

[0008] In this scheme, the above structural form is adopted, and the spatial layout is reasonable.

[0009] Preferably, a sealing ring is provided between the wall surface of the adjusting portion and the wall surface of the fixing portion.

[0010] In this solution, the above-mentioned structural form is adopted, the adjusting part and the fixing part are clearance-matched, and a sealing ring is installed between the two to achieve sealing and prevent gas leakage.

[0011] Preferably, the burner also includes a fixing clamping ring, the adjusting part is nested inside the fixing part, and a first groove is provided on the outer wall of the adjusting part along the circumferential direction of the adjusting part, and a second groove corresponding to the position of the first groove is provided on the fixing part, and the second groove passes through the inner and outer walls of the fixing part, and the fixing clamping ring is embedded in the second groove and clamped in the first groove.

[0012] In this solution, the above-mentioned structural form is adopted, and the adjusting part is fixed to the fixing part by a fixing clamp, thereby reducing or preventing the adjusting part from being separated from the fixing part.

[0013] Preferably, the first grooves are connected end to end, and the wall surface of the fixing portion is provided with a plurality of second grooves arranged at intervals.

[0014] In this solution, the above-mentioned structural form is adopted, and the adjustment part is not blocked during rotation. The fixing clamping ring is clamped into the first groove through multiple second grooves, and the fixing effect is good.

[0015] Preferably, a connecting column is provided in the middle of the ejector tube, both ends of the connecting column are respectively connected to the inner wall surface of the ejector tube, an insertion hole is provided in the middle of the connecting column, and the outer wall of the nozzle is tightly matched with the insertion hole.

[0016] In this solution, the above-mentioned structural form is adopted, and an insertion hole is opened on the connecting column to engage the nozzle, which is convenient for processing and helps to reduce processing costs.

[0017] Preferably, the burner also includes an air flap, which is sleeved on the outer peripheral side of the nozzle and fixed to the outer wall of the nozzle. The air flap is provided with an air inlet hole, and the overlapping part of the air inlet hole and the air inlet area on both sides of the connecting column forms an air inlet channel. When the adjusting part rotates, it drives the air flap to rotate relative to the ejector tube to adjust the opening of the air inlet channel.

[0018] In this solution, the aforementioned structure forms an air inlet channel formed by the overlap between the air inlet holes on the air flap and the air inlet areas on both sides of the connecting column. This eliminates the need for additional air inlet channels, resulting in a rational spatial layout and a compact structure. Furthermore, the air flap can be rotated to adjust the overlap between the air inlet holes and the air inlet areas, thereby adjusting the opening of the air inlet channel, making it easy to adjust.

[0019] Preferably, the adjusting portion is provided with a handle.

[0020] In this solution, the above-mentioned structural form is adopted, and the operator can hold the handle to rotate the adjustment part, and then realize the circumferential rotation of the nozzle. Since the air flap is fixed on the outer peripheral side of the air flap, the overlapping part between the air inlet hole and the air inlet area is adjusted while rotating the adjustment part, thereby adjusting the opening of the air inlet channel, which is easy to operate.

[0021] Preferably, the nozzle is threadably engaged with the insertion hole.

[0022] In this solution, the above-mentioned structural form is adopted to achieve the coordination between the nozzle and the ejection tube, and the installation is convenient.

[0023] The present invention also provides a gas stove comprising the burner as described above.

[0024] In this solution, the above-mentioned structure ensures a tight fit between the nozzle and the ejector tube, ensuring concentricity between the nozzle and the ejector tube, ensuring concentricity between the ejecting gas and the ejected gas, and ensuring effective ejection, thereby improving the burner's combustion efficiency and flue gas performance. Furthermore, while maintaining effective ejection, the close fit between the nozzle and the ejector tube, coupled with the clearance between the adjustment section and the valve body, allows for circumferential adjustability of the nozzle. This allows assembly tolerances to be absorbed by the in-line valve, facilitating processing and installation.

[0025] The positive progress effect of the present invention is:

[0026] The burner nozzle and ejector tube of this invention tightly mate, ensuring concentricity between the nozzle and ejector tube, ensuring concentricity between the ejecting gas and the ejected gas, and guaranteeing effective ejection, thereby enhancing the burner's combustion efficiency and improving flue gas performance. Furthermore, while maintaining effective ejection, the tight fit between the nozzle and ejector tube, coupled with a clearance between the adjustment section and the valve body to achieve circumferential adjustability of the nozzle, allows assembly tolerances to be absorbed by the in-line valve, facilitating processing and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of a gas stove according to a preferred embodiment of the present invention.

[0028] Figure 2 Schematic diagram of the structure of a burner according to a preferred embodiment of the present invention.

[0029] Figure 3 This is a schematic structural diagram of a burner from another angle according to a preferred embodiment of the present invention.

[0030] Figure 4 A partial cross-sectional view of a burner according to a preferred embodiment of the present invention.

[0031] Figure 5 Schematic diagram of the structure of the fixing part of a preferred embodiment of the present invention.

[0032] Figure 6 Schematic diagram of the structure of the adjustment part of a preferred embodiment of the present invention.

[0033] Description of reference numerals:

[0034] Burner 1

[0035] Ejector tube 11

[0036] Connecting column 111

[0037] Insert hole 1111

[0038] Air intake area 112

[0039] Inline valve 12

[0040] Valve body 121

[0041] Fixed portion 1211

[0042] Second groove 12111

[0043] Air outlet 1212

[0044] Adjustment unit 122

[0045] First groove 1221

[0046] Nozzle 123

[0047] Sealing ring 2

[0048] Fixed snap ring 3

[0049] Air flap 4

[0050] Air inlet 41

[0051] Chassis 5

[0052] Gas stove 6 DETAILED DESCRIPTION

[0053] The present invention will be described more clearly and completely below by way of examples in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the following examples.

[0054] like Figure 1 As shown, an embodiment of the present invention provides a gas stove 6. The gas stove 6 includes a chassis 5 and two burners 1 arranged on the chassis 5. Of course, the present invention is not limited thereto, and the number of burners 1 of the gas stove 6 can be selected as needed.

[0055] Please also see Figures 2 to 6The embodiment of the present invention further provides a burner 1, which includes an ejector tube 11 and a plug-in valve 12. The plug-in valve 12 includes a valve body 121, an adjusting portion 122, and a nozzle 123 connected in sequence. The nozzle 123 is inserted into the ejector tube 11 and fits tightly with the ejector tube 11. The axis of the nozzle 123 coincides with the axis of the ejector tube 11. The adjusting portion 122 and the valve body 121 are clearance-fitted and nested with each other. The adjusting portion 122 is not easily detached from the fixing portion 1211. The adjusting portion 122 can rotate relative to the valve body 121 to drive the nozzle 123 to rotate circumferentially. During the rotation of the adjusting portion 122, the adjusting portion 122 drives the nozzle 123 connected thereto to rotate, and the circumferential adjustability of the nozzle 123 is achieved by adjusting the adjusting portion 122.

[0056] In this embodiment, nozzle 123 closely mates with ejector tube 11, ensuring concentricity between nozzle 123 and ejector tube 11, ensuring concentricity between the ejecting gas and the ejected gas, and ensuring an effective ejection, thereby enhancing the combustion efficiency of burner 1 and improving flue gas performance. Furthermore, while ensuring effective ejection, the close fit between nozzle 123 and ejector tube 11 and the clearance between adjustment portion 122 and valve body 121 allow for circumferential adjustability of nozzle 123. This allows assembly tolerances to be absorbed by the in-line valve 12, facilitating fabrication and installation.

[0057] It should be noted that the nozzle 123 and the ejector tube 11 are tightly fitted. Here, “tightly fitted” does not refer to an interference fit. The single-side gap between the nozzle 123 and the ejector tube 11 may be 0.2 mm.

[0058] like Figure 3 and Figure 4 As shown, a fixing portion 1211 is provided at one end of the valve body 121 close to the regulating portion 122. The gas passes through the gas outlet 1212, the fixing portion 1211, the regulating portion 122 and the nozzle 123 of the valve body 121 in sequence and then enters the ejector tube 11. The fixing portion 1211 and the regulating portion 122 are gap-fitted and nested with each other, and the spatial layout is reasonable.

[0059] like Figure 4 As shown, a sealing ring 2 is provided between the wall surface of the adjusting portion 122 and the wall surface of the fixing portion 1211. The adjusting portion 122 and the fixing portion 1211 are spaced apart to provide a seal and prevent gas leakage. For example, the sealing ring 2 can be a rubber sleeve.

[0060] Specifically, the adjusting portion 122 is sleeved inside the fixing portion 1211, the sealing ring 2 is sleeved on the outer circumference of the adjusting portion 122 and abuts against the inner wall surface of the fixing portion 1211, and the end of the nozzle 123 close to the adjusting portion 122 is sleeved inside the adjusting portion 122. Alternatively, the fixing portion 1211 is sleeved on the inner wall of the adjusting portion 122, and the sealing ring 2 is sleeved on the outer circumference of the fixing portion 1211 and abuts against the inner wall surface of the adjusting portion 122.

[0061] like Figure 2 and Figure 4 As shown, the burner 1 further includes a fixing snap ring 3. The adjusting portion 122 is nested within the fixing portion 1211. A first groove 1221 is provided on the outer wall of the adjusting portion 122 along the circumferential direction of the adjusting portion 122. The fixing portion 1211 is provided with a second groove 12111 corresponding to the position of the first groove 1221. The second groove 12111 penetrates the inner and outer walls of the fixing portion 1211. The fixing snap ring 3 is embedded in the second groove 12111 and is clamped within the first groove 1221. The fixing snap ring 3 secures the adjusting portion 122 to the fixing portion 1211, reducing or preventing the adjusting portion 122 from detaching from the fixing portion 1211.

[0062] In this embodiment, if Figure 5 and Figure 6 As shown, the first grooves 1221 are connected at their ends, the adjusting portion 122 is not blocked during rotation, the wall surface of the fixing portion 1211 is provided with a plurality of second grooves 12111 spaced apart, and the fixing clamp 3 is clamped into the first groove 1221 through the plurality of second grooves 12111, and the fixing effect is good.

[0063] Specifically, two second grooves 12111 are arranged opposite to each other on the wall surface of the fixing portion 1211, and the fixing clamp 3 has two protrusions protruding toward the direction close to the adjusting portion 122. The two protrusions are arranged opposite to each other, and the two protrusions enter the first groove 1221 from the two second grooves 12111 respectively and are clamped in the first groove 1221 to achieve the fixation of the adjusting portion 122 and the fixing portion 1211.

[0064] like Figure 3 As shown, a connecting post 111 is provided in the middle of the ejector tube 11. Both ends of the connecting post 111 are connected to the inner wall of the ejector tube 11. An insertion hole 1111 is provided in the middle of the connecting post 111. The outer wall of the nozzle 123 fits tightly into the insertion hole 1111. Providing the insertion hole 1111 on the connecting post 111 for engaging the nozzle 123 facilitates processing and helps reduce processing costs.

[0065] In this embodiment, the burner 1 further includes an air flap 4, which is mounted on the outer periphery of the nozzle 123 and fixed to the outer wall of the nozzle 123. The air flap 4 is provided with an air inlet hole 41. The overlapping portion between the air inlet hole 41 and the air inlet areas 112 on either side of the connecting column 111 forms an air inlet channel. Rotation of the adjustment portion 122 simultaneously drives the air flap 4 relative to the ejector tube 11 to adjust the opening of the air inlet channel. The air flap 4 is fixed to the outer periphery of the nozzle 123, eliminating the need for a spring that mounts on the outer periphery of the nozzle 123 and presses the air flap 4 toward the ejector tube 11 to position it. This reduces the number of components and reduces costs. The air inlet channel is formed by the overlapping portion between the air inlet hole 41 on the air flap 4 and the air inlet areas 112 on either side of the connecting column 111. This eliminates the need for a separate air inlet channel, resulting in a rational spatial layout and a compact structure. In addition, the size of the overlapping area between the air inlet hole 41 and the air inlet area 112 can be adjusted by rotating the air flap 4, thereby adjusting the opening of the air inlet channel, which is convenient for adjustment.

[0066] Specifically, each air flap 4 has two air inlet holes 41, arranged in a fan shape and located on the outer periphery of the nozzle 123. There are two ejector tubes 11, with a one-to-one correspondence between the nozzles 123, air flaps 4, and ejector tubes 11. The two nozzles 123 are inserted into the two air flaps 4, respectively, and into the ejector tubes 11. By increasing the number of nozzles 123 and ejector tubes 11, the combustion efficiency of the burner 1 is improved.

[0067] In this embodiment, a handle (not shown) is provided on the adjustment portion 122, and the operator can hold the handle to rotate the adjustment portion 122, thereby realizing the circumferential rotation of the nozzle 123. Since the air flap 4 is fixed to the outer peripheral side of the air flap 4, the overlapping portion between the air inlet hole 41 and the air inlet area 112 is adjusted while rotating the adjustment portion 122, thereby adjusting the opening of the air inlet channel, which is convenient to operate.

[0068] In this embodiment, the nozzle 123 is threadedly engaged with the insertion hole 1111, thereby achieving the cooperation between the nozzle 123 and the ejector tube 11, which is convenient for installation. During installation, the nozzle 123 is first engaged with the ejector tube 11, and then the adjustment part 122 and the valve body 121 are installed in sequence.

[0069] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A burner, characterized in that: The burner includes an ejector tube and an in-line valve, the in-line valve including a valve body, an adjusting portion, and a nozzle connected in sequence, the nozzle being inserted into the ejector tube and tightly fitted therewith, with the axis of the nozzle coinciding with the axis of the ejector tube, the adjusting portion and the valve body being loosely fitted and nested with each other, and the adjusting portion being rotatable relative to the valve body to drive the nozzle to rotate circumferentially; A fixing portion is provided at one end of the valve body close to the regulating portion, and gas passes through the gas outlet of the valve body, the fixing portion, the regulating portion and the nozzle in sequence before entering the ejector tube. The fixing portion and the regulating portion are clearance-matched and nested with each other. The burner also includes a fixing clamping ring, the adjusting part is nested inside the fixing part, and a first groove is provided on the outer wall of the adjusting part along the circumferential direction of the adjusting part. The fixing part is provided with a second groove corresponding to the position of the first groove, and the second groove passes through the inner and outer walls of the fixing part. The fixing clamping ring is embedded in the second groove and clamped in the first groove.

2. The burner according to claim 1, wherein A sealing ring is provided between the wall surface of the adjusting portion and the wall surface of the fixing portion.

3. The burner according to claim 1, wherein The first grooves are connected end to end, and a wall surface of the fixing portion is provided with a plurality of second grooves arranged at intervals.

4. The burner according to claim 1, wherein A connecting column is provided in the middle of the ejector tube, both ends of which are respectively connected to the inner wall surface of the ejector tube. An insertion hole is provided in the middle of the connecting column, and the outer wall of the nozzle is tightly matched with the insertion hole.

5. The burner according to claim 4, characterized in that The burner also includes an air flap, which is sleeved on the outer peripheral side of the nozzle and fixed to the outer wall of the nozzle. The air flap is provided with an air inlet hole, and the overlapping part of the air inlet hole and the air inlet area on both sides of the connecting column forms an air inlet channel. When the adjusting part rotates, it drives the air flap to rotate relative to the ejector tube to adjust the opening of the air inlet channel.

6. The burner according to claim 5, characterized in that The adjusting portion is provided with a handle.

7. The burner according to claim 4, wherein The nozzle is threadably engaged with the insertion hole.

8. A gas stove, characterized in that: The gas stove comprises the burner according to any one of claims 1 to 7.

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