Combustor

Abstract

The utility model discloses a burner which comprises an injection pipe. The direct insertion valve comprises a valve pipe and a nozzle, the nozzle comprises a fixed part and a movable part, the fixed part is fixed on the valve pipe, and the movable part is movably connected to the injection pipe; the fixed part abuts against the movable part so that the direct insertion valve can be communicated with the injection pipe. According to the combustor, a nozzle of the direct insertion valve is divided into a fixed part and a movable part, the fixed part and the movable part are connected in a non-fixed mode, and the direct insertion valve and the injection pipe are connected in an abutting mode. Wherein the movable part is fixed to the injection pipe, and the fixed part is fixed to a valve pipe of the direct insertion valve. The assembly tolerance of the direct insertion valve and the combustor is consumed in the fixed part and the movable part of the nozzle, the requirement for assembly precision is greatly lowered, meanwhile, the problem of eccentricity of the injection pipe is avoided, and the problems that the combustor is high in smoke, low in efficiency and the like are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of cooking utensils, in particular to a burner. BACKGROUND

[0002] In the prior art, the application of the straight-in valve of the burner is mainly for cost saving, and compared with the ordinary plug valve, it directly connects the valve body with the burner, saving the cost of the intermediate connecting gas pipe. However, due to the existence of tolerance size, in order to facilitate installation, the straight-in valve and the burner are usually matched with a gap (about 2mm of single-side gap), which can overcome the tolerance problem, but will cause the problem of injection eccentricity, and further cause the problems of high flue gas and low efficiency of the burner. SUMMARY

[0003] The utility model solves the technical problem that the injection eccentricity causes the problems of high flue gas and low efficiency of the burner in the prior art, and provides a burner.

[0004] The utility model solves the above technical problem by the following technical scheme:

[0005] A burner comprises:

[0006] An injection pipe;

[0007] A straight-in valve, which comprises a valve pipe and a nozzle, the nozzle comprises a fixed part and a movable part, the fixed part is fixed on the valve pipe, and the movable part is movably connected to the injection pipe;

[0008] The fixed part and the movable part abut against each other to communicate the straight-in valve with the injection pipe.

[0009] In the scheme, the burner divides the nozzle of the straight-in valve into two parts, i.e. the fixed part and the movable part, the fixed part and the movable part are not fixedly connected, but are connected by abutment. The movable part is fixed on the injection pipe, and the fixed part is fixed on the valve pipe of the straight-in valve. The assembly tolerance of the straight-in valve and the burner is consumed in the fixed part and the movable part of the nozzle, which greatly reduces the assembly precision requirement, and also does not cause the problem of injection pipe eccentricity, solving the problems of high flue gas and low efficiency of the burner.

[0010] Preferably, the nozzle further comprises an air guide part, the air guide part communicates the inside of the nozzle with the outside space, and the air guide part is formed at the abutment position of the fixed part and the movable part.

[0011] In the present scheme, the above structure is adopted, the air inlet hole is formed at the abutting position of the fixed part and the movable part, and the assembly tolerance of the straight insertion valve and the burner is consumed at the air inlet hole, so that the assembly gap can be consumed by the air inlet hole, the assembly gap can be part of the air inlet hole, and the assembly precision is reduced.

[0012] Preferably, the fixed part and / or the movable part are provided with an air inlet hole on one side of the abutting end.

[0013] In the present scheme, the above structure is adopted, the air inlet hole is arranged at one end of the fixed part or the movable part, and when the two abut, air can enter the connection position of the two through the air inlet hole.

[0014] Preferably, the fixed part is provided with a first air inlet groove on the peripheral surface of one end facing the movable part, and the movable part is provided with a second air inlet groove on the peripheral surface of one end facing the fixed part.

[0015] When the movable part abuts against the fixed part, the first air inlet groove and the second air inlet groove are combined to form the air inlet hole.

[0016] In the present scheme, the above structure is adopted, the first air inlet groove and the second air inlet groove are formed by grooving at both ends, and when the two abut, the first air inlet groove and the second air inlet groove are combined to form the air inlet hole, the assembly tolerance becomes the tolerance of the combination of the two, which only affects the area of the air inlet hole and has little effect on the whole.

[0017] Preferably, the movable part is movably connected with the ejector pipe.

[0018] In the present scheme, the above structure is adopted, the movable part is movably connected with the ejector pipe, which is convenient for cooperation with the fixed part when abutting.

[0019] Preferably, the end of the movable part has a boss structure, and a spring is further arranged between the outer wall surface of the movable part and the ejector pipe, the spring is sleeved on the movable part, one end of the spring abuts against the boss structure, and the other end of the spring abuts against the outer wall surface of the ejector pipe.

[0020] In the present scheme, the above structure is adopted, the movable part further includes a spring, so that the movable part can abut against the fixed part elastically, and when the two abut, the fixed part can drive the movable part to move inward relative to the ejector pipe, and the movable part and the fixed part are pressed tightly by the elastic force of the spring.

[0021] Preferably, the fixed part is provided with external threads, the opening end of the valve pipe is provided with corresponding internal threads, and the fixed part is screw-connected with the valve pipe.

[0022] In the scheme, the fixed part is connected with the valve pipe through thread, which can ensure the sealing and adjust the extension distance of the fixed part through rotation.

[0023] Preferably, the fixed part comprises a spray hole, the diameter of the spray hole is smaller than the diameter of the valve pipe and the diameter of the opening of the fixed part.

[0024] In the scheme, the spray hole is arranged on the movable part and its position is fixed. The spray hole is used to input gas into the injection valve, and the diameter of the spray hole is smaller than the diameter of the valve pipe, which can ensure that the gas flow through the nozzle converges at the position of the spray hole and is sprayed out, so that the gas spraying is not affected by the position of the valve pipe and the nozzle, thereby reducing the influence of assembly tolerance on the gas nozzle.

[0025] Preferably, the fixed part comprises a flow guide cavity, one end of the flow guide cavity is communicated with the valve pipe, and the other end is communicated with the spray hole, and the diameter of the flow guide cavity gradually converges.

[0026] In the scheme, the flow guide cavity can guide the gas in the valve pipe to the position of the spray hole through gradual convergence, thereby reducing the internal turbulence.

[0027] Preferably, the fixed part comprises a fixed end and a connecting end, the fixed end is connected with the valve pipe through thread, the connecting end is abutted with the movable part, and the diameter of the connecting end is wider than that of the fixed end.

[0028] In the scheme, the diameter of the connecting end is wider than that of the fixed end, so that the opening part of the valve pipe is completely closed through the fixed end when the valve pipe is connected with the fixed part, thereby increasing the air tightness and facilitating the abutment with the movable part.

[0029] The utility model discloses a positive progress effect lies in: the utility model discloses a kind of combustor, it includes injection pipe;Straight insertion valve, the straight insertion valve includes valve pipe and nozzle, the nozzle includes fixed part and movable part, the fixed part is fixed on the valve pipe, the movable part is movably connected in the injection pipe;The fixed part is abutted with the movable part to connect the straight insertion valve with the injection pipe. Combustor divides the nozzle of straight insertion valve into fixed part and movable part two parts, fixed part and movable part are not fixedly connected, but adopt abutment mode to realize the connection of straight insertion valve and injection pipe. Among them, movable part is fixed on injection pipe, fixed part is fixed on the valve pipe of straight insertion valve. The assembly tolerance of straight insertion valve and combustor is consumed in the fixed part and movable part of nozzle, greatly reduce assembly precision requirement, also not bring injection pipe eccentric problem, solve the problem such as high, low efficiency of combustor flue gas. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1The structure schematic view of the stove of the embodiment of the utility model.

[0031] Figure 2 The structure schematic view of the burner of the embodiment of the utility model.

[0032] Figure 3 The structure schematic view of the nozzle of the embodiment of the utility model.

[0033] Figure 4 The internal structure schematic view of the nozzle of the embodiment of the utility model.

[0034] Figure 5 The split structure schematic view of the nozzle of the embodiment of the utility model.

[0035] Mark explanation:

[0036] Burner 100

[0037] Ejection pipe 10

[0038] Straight insertion valve 20

[0039] Valve pipe 21

[0040] Nozzle 30

[0041] Air inlet hole 301

[0042] Fixed part 31

[0043] Spray hole 311

[0044] Flow guide cavity 312

[0045] First air inlet groove 313

[0046] Fixed end 314

[0047] Connecting end 315

[0048] Movable part 32

[0049] Spring 321

[0050] Boss structure 322

[0051] Second air inlet groove 323 Specific implementation

[0052] The utility model will be described below with a preferred embodiment and in combination with the drawings.

[0053] As Figures 1 to 5As shown, the embodiment provides a burner 100, which comprises an ejector pipe 10 and a direct insertion valve 20. The direct insertion valve 20 comprises a valve pipe 21 and a nozzle 30, the nozzle 30 comprises a fixed part 31 and a movable part 32, the fixed part 31 is fixed on the valve pipe 21, and the movable part 32 is movably connected to the ejector pipe 10. The fixed part 31 and the movable part 32 abut to communicate the direct insertion valve 20 and the ejector pipe 10.

[0054] In the embodiment, the burner 100 divides the nozzle 30 of the direct insertion valve 20 into the fixed part 31 and the movable part 32, the fixed part 31 and the movable part 32 are respectively fixed with the ejector pipe 10 and the valve pipe 21 of the direct insertion valve 20, and are connected. The fixed part 31 and the movable part 32 are non-fixedly connected, but abut to realize the connection of the direct insertion valve 20 and the ejector pipe 10. The movable part 32 is fixed to the ejector pipe 10, and the fixed part 31 is fixed to the valve pipe 21 of the direct insertion valve 20. When abutting, the two do not need to be strictly matched, and can have a certain fault tolerance space. The assembly tolerance of the direct insertion valve 20 and the burner 100 is consumed in the fixed part 31 and the movable part 32 of the nozzle 30, which greatly reduces the assembly precision requirement, and also does not bring the problem of eccentricity of the ejector pipe 10, solves the problems of high flue gas and low efficiency of the burner 100.

[0055] As shown in Figure 3 , Figure 4 , the nozzle 30 further comprises an air guide part, which communicates the inside of the nozzle 30 with the outside space, and the air guide part is formed at the abutting position of the fixed part 31 and the movable part 32.

[0056] In the embodiment, the air guide part is arranged at the abutting position of the fixed part 31 and the movable part 32, which can introduce external air into the inside of the nozzle 30. The fixed part 31 and the movable part 32 form an air guide hole 301 at the abutting position, and the assembly tolerance of the direct insertion valve 20 and the burner 100 is consumed at the air guide hole 301. The assembly gap can be used as part of the air guide hole 301 to reduce the assembly precision.

[0057] The end side of the fixed part 31 and the movable part 32 for abutting is provided with an air guide hole 301. The air guide hole 301 can be arranged at one end of the fixed part 31 or the movable part 32, or arranged on the fixed part 31 and the movable part 32 at the same time. When the two abut, air can enter the connection position through the air guide hole 301.

[0058] The air inlet hole 301 in the embodiment is shown in the figure, which includes a first air inlet groove 313 and a second air inlet groove 323. The first air inlet groove 313 is formed on the circumferential surface of one end of the fixed part 31 towards the movable part 32, and the second air inlet groove 323 is formed on the circumferential surface of one end of the movable part 32 towards the fixed part 31. When the movable part 32 abuts against the fixed part 31, the first air inlet groove 313 and the second air inlet groove 323 are combined to form the air inlet hole 301.

[0059] In the embodiment, the first air inlet groove 313 and the second air inlet groove 323 are formed by being slotted at both ends, and when abutting, the first air inlet groove 313 and the second air inlet groove 323 are combined to form the air inlet hole 301. The assembly tolerance becomes the tolerance of the combination of the two, and when there is a tolerance in the combination, the first air inlet groove 313 and the second air inlet groove 323 will be misaligned and have some overlap when combined, which will not excessively affect the aperture of the air inlet, and will not have a substantial impact.

[0060] As shown in Figure 3 , Figure 4 , the movable part 32 is movably connected with the ejector pipe 10. The movable part 32 is arranged on the ejector pipe 10, but can move within a certain range relative to the ejector pipe 10, so that when it abuts against the fixed part 31, it can move adaptively, thereby reducing the wear when directly colliding. The movable part 32 is movably connected with the ejector pipe 10, which facilitates cooperation with the fixed part 31 when abutting.

[0061] Specifically, the end of the movable part 32 has a boss structure 322, and the movable part 32 and the outer wall surface of the ejector pipe 10 further include a spring 321, which is sleeved on the movable part 32, one end of the spring 321 abuts against the boss structure 322, and the other end of the spring 321 abuts against the outer wall surface of the ejector pipe 10. The movable part 32 further includes the spring 321, so that the movable part 32 can abut against the fixed part 31 elastically, and when abutting, the fixed part 31 can recursively move the movable part 32 to move inward relative to the ejector pipe 10, and the movable part 32 and the fixed part 31 are pressed tightly by the elastic force of the spring 321. The spring 321 is clamped between the movable part 32 and the wall surface of the ejector pipe 10, and can compress the spring 321 when the movable part 32 moves inward.

[0062] As shown in Figure 4 , the fixed part 31 has external threads, and the inside of the open end of the valve pipe 21 has corresponding internal threads, and the fixed part 31 is screw-connected with the open end of the valve pipe 21. In the embodiment, the fixed part 31 is screw-connected with the valve pipe 21, which on the one hand ensures the sealing property, and on the other hand enables the fixed part 31 to adjust the extension distance by rotation, thereby facilitating the adjustment of the position when abutting against the movable part 32.

[0063] During assembly, first install the fixing part 31 inside the valve tube 21 of the direct insertion valve 20 and tighten it. Then install the direct insertion valve 20 onto the burner 100. Rotate the fixing part 31 to extend it out and abut against the movable part 32, and the assembly is completed.

[0064] like Figure 4 As shown, the fixing part 31 includes a spray hole 311, the diameter of which is smaller than the diameter of the valve pipe 21 and the opening of the fixing part 31. The fixing part 31 is connected to the corresponding opening of the movable part 32 through the spray hole 311. The small diameter of the spray hole 311 allows it to be completely aligned with the internal opening of the movable part 32 even when there is a tolerance in the mating of the fixing part 31 and the movable part 32.

[0065] In this embodiment, the nozzle 311 is fixed in position on the movable part 32. It is used to input gas into the ejector valve. The diameter of the nozzle 311 is smaller than the diameter of the valve pipe 21, which ensures that no matter how the gas flow passes through the nozzle 30, it will converge and be ejected at the nozzle 311. This prevents the gas ejection from being affected by the positions of the valve pipe 21 and the nozzle 30, thereby reducing the impact of assembly tolerances on the gas nozzle 30.

[0066] like Figure 4 As shown, the fixing part 31 includes a flow guiding cavity 312, one end of which is connected to the valve pipe 21, and the other end is connected to the nozzle 311. The diameter of the flow guiding cavity 312 gradually converges. The internal cavity of the fixing part 31 is hourglass-shaped, with larger sides and a smaller nozzle 311 in the middle. The larger side cavities gradually converge.

[0067] In this embodiment, the flow guiding cavity 312 can guide the gas in the valve pipe 21 to the nozzle 311 position by gradually converging, thereby reducing internal turbulence.

[0068] like Figure 4 , Figure 5 As shown, the fixing part 31 includes a fixing end 314 and a connecting end 315. The fixing end 314 is threadedly connected to the valve pipe 21, and the connecting end 315 abuts against the movable part 32. The diameter of the connecting end 315 is wider than that of the fixing end 314. In this embodiment, the diameter of the connecting end 315 is wider than that of the fixing end 314, so that when the valve pipe 21 is connected to the fixing part 31, the opening of the valve pipe 21 is completely sealed by the fixing end 314, which increases the airtightness and facilitates abutment against the movable part 32.

[0069] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A burner, characterized by It includes: An ejector pipe; A direct insertion valve, which includes a valve pipe and a nozzle, the nozzle includes a fixed part and a movable part, the fixed part is fixed on the valve pipe, and the movable part is movably connected to the ejector pipe; The fixed part abuts against the movable part to communicate the direct insertion valve with the ejector pipe.

2. The burner of claim 1, wherein The nozzle further includes an air guide part, which communicates the inside of the nozzle with the outside space, and the air guide part is formed at the abutting position of the fixed part and the movable part.

3. The burner of claim 2, wherein The end of the fixed part and / or the movable part for abutting is provided with an air guide hole on the side surface.

4. The burner of claim 3, wherein The fixed part is provided with a first air guide groove on the peripheral surface of one end thereof, and the movable part is provided with a second air guide groove on the peripheral surface of one end thereof; When the movable part abuts against the fixed part, the first air guide groove and the second air guide groove are combined to form the air guide hole.

5. The burner of claim 1, wherein The movable part is movably connected to the ejector pipe.

6. The burner of claim 4, wherein The end of the movable part has a boss structure, and a spring is further included between the movable part and the outer wall surface of the ejector pipe, the spring is sleeved on the movable part, one end of the spring abuts against the boss structure, and the other end of the spring abuts against the outer wall surface of the ejector pipe.

7. The burner of claim 1, wherein The fixed part is provided with external threads, and the inside of the open end of the valve pipe is provided with corresponding internal threads, and the fixed part is screw-connected with the valve pipe through the open threads.

8. The burner of claim 1, wherein The fixed part includes a spray hole, and the diameter of the spray hole is smaller than the diameter of the valve pipe and the diameter of the opening of the fixed part.

9. The burner of claim 8, wherein The fixed part includes a flow guide cavity, one end of the flow guide cavity communicates with the valve pipe, and the other end of the flow guide cavity communicates with the spray hole, and the diameter of the flow guide cavity gradually converges.

10. The burner of claim 8, wherein The fixed part includes a fixed end and a connecting end, the fixed end is screw-connected with the valve pipe, the connecting end abuts against the movable part, and the diameter of the connecting end is wider than that of the fixed end.

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