CN111664454B

CN111664454B - Stove burner

Info

Publication number: CN111664454B
Application number: CN202010709682.9A
Authority: CN
Inventors: 孙文静; 李追; 徐强
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-12-10
Anticipated expiration: 2040-07-22
Also published as: CN111664454A

Abstract

The invention discloses a stove burner which comprises an anti-backfire device, a gas nozzle and an injection pipe, wherein a nozzle of the gas nozzle is arranged towards an air inlet of the injection pipe, a first air channel communicated with the outside is arranged in the gas nozzle, an outlet is formed in the surface of the end part of the gas nozzle of the first air channel, the anti-backfire device is covered on the nozzle and the outlet and forms a gas mixing cavity communicated with the injection pipe together with the surface of the end part of the gas nozzle, and the anti-backfire device and the inner wall of the injection pipe form a second air channel communicated with the outside together. The anti-backfire device of the stove burner is arranged at the position of the injection pipe, which is connected with the gas nozzle, so that the influence on ventilation and anti-backfire effects caused by high temperature bearing is avoided, the anti-backfire device is internally provided with the first air channel, the sufficient air supply is ensured, the temperature of the anti-backfire device can be reduced, and meanwhile, the anti-backfire device is matched with the second air channel of the injection pipe, so that two-stage air injection is realized, and the mixing effect of gas and air is improved.

Description

Stove burner

Technical Field

The invention relates to a stove burner.

Background

Generally, the interior of the burner of the cooking appliance is provided with an anti-backfire device for preventing flame generated by the reduction of the gas flow from extending to the interior of the cooking appliance along the gas outflow direction to burn when the burner of the cooking appliance is in normal use, so as to avoid the danger. The general anti-backfire device is arranged at the position where a gas chamber below a fire cover of a stove is communicated with an injection pipe, but the arrangement of the anti-backfire device at the position can cause the environment temperature of the anti-backfire device to be higher, and at higher temperature, a vent hole on the surface of the anti-backfire device for playing a role in anti-backfire can be influenced due to high temperature, and the ventilation and anti-backfire effects can be greatly reduced.

Disclosure of Invention

The invention aims to overcome the defects that the anti-backfire device is arranged in a gas chamber to influence the anti-backfire performance and the normal passing of gas in the prior art, and provides a stove burner.

The invention solves the technical problems through the following technical scheme:

a stove burner comprises a gas nozzle and an injection pipe, wherein a nozzle of the gas nozzle is arranged towards an air inlet of the injection pipe, and the stove burner is characterized in that a first air channel communicated with the outside is arranged inside the gas nozzle, an outlet is formed in the surface, provided with the nozzle, of the end part of the gas nozzle of the first air channel, an anti-backfire device is further arranged on the surface, covered on the nozzle and the outlet of the first air channel, of the end part of the anti-backfire device and the surface, provided with the nozzle, of the end part of the gas nozzle jointly form a gas mixing cavity communicated with the injection pipe, and the anti-backfire device and the inner wall of the injection pipe jointly form a second air channel communicated with the outside.

In this scheme, the anti-backfire device of cooking utensils combustor is used for preventing that the cooking utensils combustor from taking place the backfire, furtherly, the anti-backfire device sets up the position department of connecting the gas nozzle who draws the pipe, thereby avoided setting up drawing one side that is close to the gas cavity of pipe and lead to it because be in among the higher temperature and influence the ventilation effect in anti-backfire device's wind hole, and simultaneously, the inside first air passage of gas nozzle and gas passage all lead to in the inside gas mixing chamber of anti-backfire device, guaranteed to have sufficient air supply, make gas and air mix more fully, and the combustion efficiency is improved, yellow flame has been avoided producing, still can reduce the temperature of anti-backfire device through the air of introducing simultaneously. In addition, the second air passage and the first air passage are matched with each other, so that two-stage air injection is realized, the air inlet amount is increased, the mixing effect of gas and air is improved, and the injection performance is improved.

Preferably, a plurality of milling grooves are annularly formed in the side wall of one end of the gas nozzle, one end of each milling groove extends to the surface of the end portion of the gas nozzle, and each milling groove forms the first air channel. A circle of groove is milled on the side wall of the gas nozzle to be used as a channel for introducing air, one end of the groove extends to the end part of the gas nozzle positioned in the gas mixing cavity to be matched with the gas channel inside the gas nozzle, and therefore gas and air flow into the gas mixing cavity simultaneously.

Preferably, the gas nozzle is provided with a plurality of through holes inside, two ends of each through hole are respectively located on the side wall of the gas nozzle and the end surface of the gas nozzle, an internal channel of each through hole forms the first air channel, and one ends of all the through holes located on the end surfaces are annularly distributed on the outer side of the nozzle. Form the inside first air passage of gas nozzle through the mode that sets up the through-hole, the form of through-hole is compared in the form of milling flutes, and anti-pollution and effect of jam are better.

Preferably, the anti-backfire device comprises a pore plate and a cavity wall, the pore plate covers one end of the cavity wall, the other end of the cavity wall is sleeved on the outer ring of the gas nozzle, and the pore plate, the cavity wall and the end surface of the gas nozzle together enclose the gas mixing cavity. The orifice plate and the cavity wall of the backfire preventing device jointly form a concave space, then are fixed at the end part of the gas nozzle, and further are matched to form a gas mixing cavity, and the whole gas mixing cavity is communicated with the injection pipe, so that the communicated supply of gas and air is realized.

Preferably, the surface of the pore plate is provided with a plurality of vent holes which are uniformly distributed, and the vent holes are communicated with the air mixing cavity and the injection pipe. The vent hole is used as a part of the anti-backfire device for backfire, and the vent hole is arranged to meet the requirement of critical diameter, so that the anti-backfire device can play a role, and is also used as an opening for communicating a gas channel inside the gas nozzle with the first air injection channel.

Preferably, the orifice plate is located in the expansion section of the injection pipe, and the cavity wall and the inner wall of the injection pipe jointly form the second air passage. The orifice plate sets up in the expansion section of drawing penetrating the pipe to form the gas chamber that mixes of extension type, mix the gas chamber and extend towards drawing penetrating the more dark direction of pipe, make gas and air premix in advance, improved the degree of mixing, thereby can improve gas mixture's combustion efficiency, and, it is inside that the extension passageway is deep to drawing penetrating the pipe, can reduce the resistance that the air produced to gas, improve the gas flow rate, the effect of preventing the tempering is better.

Preferably, the cavity wall is spirally extended. The helical, i.e. wave-shaped, extended channels enable a more uniform mixing of gas and air.

Preferably, the stove burner further comprises a wind gate plate, the wind gate plate is fixed at the air inlet of the injection pipe, a plurality of openings are formed in the surface of the wind gate plate, and the second air channel is communicated to the outside through the openings. The air door plate can be used for realizing the fixing function between the gas nozzle and the injection pipe and forming an external communication port of the second air channel.

Preferably, the anti-backfire device further comprises a sealing ring, the sealing ring is arranged between the anti-backfire device and the air door plate, a sealing groove is formed in the surface of the gas nozzle, and the sealing ring is located in the sealing groove. The arrangement of the sealing ring ensures that the gas sprayed out of the gas nozzle cannot leak through the gap between the gas nozzle and the anti-backfire device, and the safety is ensured.

Preferably, an elastic part is arranged between the air door plate and the gas nozzle, one end of the elastic part is fixed on the side wall of the gas nozzle, and the other end of the elastic part abuts against the surface of the air door plate. The two ends of the elastic piece are abutted against and fixed between the air door plate and the gas nozzle to realize the compression fixation between the air door plate and the air inlet of the injection pipe.

On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.

The positive progress effects of the invention are as follows:

the stove burner provided by the invention is provided with the anti-backfire device for preventing the stove burner from backfiring, and the anti-backfire device is arranged at the position of the injection pipe connected with the gas nozzle, so that the condition that the gas nozzle is arranged close to a gas chamber and the ventilation and anti-backfire effects are influenced due to high temperature bearing is avoided.

Drawings

Fig. 1 is a schematic structural view of a cooker burner of embodiment 1 of the present invention.

Fig. 2 is a schematic structural view of a cooker burner of embodiment 1 of the present invention.

Fig. 3 is a schematic structural view of a cooker burner of embodiment 1 of the present invention.

Fig. 4 is a schematic structural view of the backfire preventing device of the present invention.

Fig. 5 is a schematic structural view of a cooker burner of embodiment 1 of the present invention.

Fig. 6 is a partially enlarged schematic view of a portion a in fig. 5.

Fig. 7 is a partial cross-sectional schematic view of a cooktop burner of embodiment 1 of the invention.

FIG. 8 is a schematic cross-sectional view of the gas burner of the present invention.

FIG. 9 is a schematic cross-sectional view of the gas burner of the present invention.

Fig. 10 is a schematic structural view of a cooker burner of embodiment 2 of the present invention.

Fig. 11 is a schematic structural view of a cooker burner of embodiment 2 of the present invention.

Description of reference numerals:

gas nozzle 1

End surface 1a

Spout 11

Milling flutes 12

Through hole 13

Sealing groove 14

Injection pipe 2

Constriction section 21

Expansion segment 22

Anti-backfire device 3

Orifice plate 31

Vent 310

Chamber wall 32

Air mixing chamber 33

Air door plate 4

Opening 41

Sealing ring 5

Elastic member 6

Gas channel 10

First air passage 20

Second air passage 30

Detailed Description

The present invention will be more clearly and completely described below by way of two preferred embodiments in conjunction with the accompanying drawings, without thereby limiting the scope of the invention to the embodiments described.

Example 1

As shown in fig. 1 to 7, the present embodiment provides a stove burner, which includes a stove valve body, a gas nozzle 1, an injection pipe 2 and an anti-backfire device 3, wherein the stove valve body is connected to the gas nozzle 1 for supplying gas to the gas nozzle 1, a nozzle 11 of the gas nozzle 1 is disposed toward an air inlet of the injection pipe 2, and in the present embodiment, the air inlet is disposed at an end of a contraction section 21 of the injection pipe 2. The interior of the gas nozzle 1 has a first air passage 20 communicating to the outside, the first air passage 20 having an outlet at an end surface 1a of the gas nozzle 1 provided with the spout 11. The anti-backfire device 3 covers the outlet of the nozzle 11 and the first air passage 20, and forms an air mixing chamber 33 communicated with the ejector pipe 2 together with the end surface 1a of the gas nozzle 1, and the air mixing chamber 33 is located inside the anti-backfire device 3 as seen in fig. 3. And a second air channel 30 communicated with the outside is formed on the anti-backfire device 3 and the inner wall of the injection pipe 2.

The anti-backfire device 3 is used for preventing the backfire of the stove burner, and further, is arranged at the position of the injection pipe 2 connected with the gas nozzle 1, so that the ventilation effect of the air hole influenced by high temperature due to the fact that the anti-backfire device is arranged at one side of the injection pipe 2 close to the gas chamber is avoided. Meanwhile, the first air channel 20 and the gas channel 10 inside the gas nozzle 1 are communicated with the gas mixing cavity 33 inside the anti-backfire device 3, so that sufficient air supply is guaranteed, gas and air can be mixed more sufficiently, the combustion efficiency is improved, yellow flame is avoided, and meanwhile, the temperature of the anti-backfire device 3 can be further reduced by introducing the air of the first air channel 20 into the gas mixing cavity 33 and increasing the flow at the anti-backfire device 3. In addition, second air passage 30 and first air passage 20 mutually support, have realized that the air of two-stage draws and has penetrated, have increased the admission capacity of air, and anti-backfire device 3 also can't block and draw the air that penetrates pipe 2 from second air passage 30, consequently improved the mixed effect of gas and air to improved and drawn the performance that penetrates pipe 2 draws the air. In this embodiment, the material of the anti-backfire device 3 is a high temperature resistant material with a temperature range of more than 350 ℃.

Further, as shown in fig. 4, the anti-backfire device 3 includes an orifice plate 31 and a cavity wall 32, the orifice plate 31 covers one end of the cavity wall 32, and the other end of the cavity wall 32 is sleeved on the outer ring of the gas nozzle 1. The orifice plate 31 and the cavity wall 32 of the backfire preventing device 3 jointly form a concave space and are fixed at the end part of the gas nozzle 1, and the orifice plate 31, the cavity wall 32 and the end surface 1a of the gas nozzle 1 further jointly enclose a gas mixing cavity 33, so that the communicated supply of gas and air is realized.

The surface of the orifice plate 31 is provided with a plurality of vent holes 310 which are uniformly distributed, and the vent holes 310 are communicated with the air mixing cavity 33 and the injection pipe 2. The vent 310 serves as a tempering-effective component of the anti-backfire device 3, and the setting thereof needs to meet the setting requirement of the critical diameter, thereby serving as an anti-backfire effect. In this embodiment, the diameter of the vent 310 is set to 0.9mm, corresponding to the critical diameter of the hydrogen and air mixture, and in other embodiments, other critical diameters of the gas and air mixture may be selected, such as 2mm for the coke oven gas and air mixture.

As shown in fig. 8, in the present embodiment, a plurality of milling grooves 12 are circumferentially formed on a side wall of one end of the gas nozzle 1, one end of the milling grooves 12 extends to the end surface 1a of the gas nozzle 1, and the plurality of milling grooves 12 form a plurality of first air passages 20 on the surface of the gas nozzle 1 to cooperate with the gas passages 10 inside the gas nozzle 1, so that gas and air simultaneously flow into the gas mixing chamber 33. In other embodiments, as shown in fig. 9, the first air channel 20 may also be realized by providing several through holes 13 in the interior of the gas nozzle 1. Both ends of the through-hole 13 are respectively located on the side wall of the gas nozzle 1 and the end surface 1a of the gas nozzle 1, so that the inner passage thereof forms the first air passage 20 of the gas nozzle 1. Further, one ends of all the through holes 13 at the end surface 1a may be circumferentially distributed outside the spout 11. The form of the through-hole 13 is more effective in preventing contamination and clogging than the form of the milled groove 12, and thus different arrangements of the first air passage 20 can be selected according to the requirements.

In addition, the stove burner is also provided with a wind door plate 4, the wind door plate 4 is fixed at the end part of the contraction section 21 of the injection pipe 2, the surface of the wind door plate 4 is provided with a plurality of openings 41, and the second air channel 30 is communicated to the outside through the openings 41. The air door plate 4 can be used for realizing the fixing function between the gas nozzle 1 and the injection pipe 2 and forming an external communication port of the second air channel 30. Further, an elastic part 6 is arranged between the air door plate 4 and the gas nozzle 1, one end of the elastic part 6 is fixed on the side wall of the gas nozzle 1, and the other end of the elastic part 6 abuts against the surface of the air door plate 4. The two ends of the elastic piece 6 between the air door plate 4 and the gas nozzle 1 are abutted and fixed to realize the compression fixation between the air door plate 4 and the air inlet of the injection pipe 2.

In this embodiment, the anti-backfire device 3 further comprises a sealing ring 5, the sealing ring 5 is arranged between the anti-backfire device 3 and the damper plate 4, the surface of the gas nozzle 1 is provided with a sealing groove 14, and the sealing ring 5 is located in the sealing groove 14. The arrangement of the sealing ring 5 ensures that the gas sprayed out of the gas nozzle 1 cannot leak through the gap between the gas nozzle 1 and the anti-backfire device 3, thereby ensuring the safety.

Example 2

As shown in fig. 10 and 11, the stove burner in this embodiment has substantially the same structure as that in embodiment 1, and the only difference is the position of the backfire arrester 3 in the ejector pipe 2: in this embodiment, the orifice plate 31 is located in the expansion section 22 of the injection pipe 2, and the cavity wall 32 extends to the position of the orifice plate 31 and forms the second air passage 30 together with the inner wall of the injection pipe 2. Form the thoughtlessly gas chamber 33 of extension type through the aforesaid setting, make thoughtlessly gas chamber 33 extend towards the darker direction of drawing penetrating pipe 2, gas and air mix in advance, have improved the degree of mixing to can improve gas mixture's combustion efficiency, and, extend the passageway and go deep into to draw penetrating pipe 2 insidely, can reduce the resistance that the air produced to gas, improve the gas velocity of flow, prevent that the effect of tempering is better. Preferably, the chamber wall 32 is provided with a helical extension, i.e. an undulating extension channel, so as to enable a more uniform mixing of the gas and air. Of course, in other embodiments, the air mixing chamber 33 may be provided in other extended shapes.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. A stove burner comprises a gas nozzle and an injection pipe, wherein a nozzle of the gas nozzle is arranged towards an air inlet of the injection pipe, and the stove burner is characterized in that a first air channel communicated with the outside is arranged inside the gas nozzle, an outlet is arranged on the surface of the end part, provided with the nozzle, of the gas nozzle of the first air channel, the stove burner further comprises an anti-backfire device, the anti-backfire device is covered on the nozzle and the outlet of the first air channel, the anti-backfire device and the surface of the end part of the gas nozzle jointly form a gas mixing cavity communicated with the injection pipe, the anti-backfire device and the inner wall of the injection pipe jointly form a second air channel communicated with the outside,

the anti-backfire device comprises a pore plate and a cavity wall, the pore plate covers one end of the cavity wall, the other end of the cavity wall is sleeved on the outer ring of the gas nozzle, the end surfaces of the pore plate, the cavity wall and the gas nozzle jointly enclose the gas mixing cavity, a plurality of uniformly distributed vent holes are formed in the surface of the pore plate, and the vent holes are communicated with the gas mixing cavity and the injection pipe.

2. The cooktop burner of claim 1, wherein a plurality of milled grooves are circumferentially disposed on a sidewall of one end of the gas burner, one end of the milled grooves extending to an end surface of the gas burner, the milled grooves forming the first air channel.

3. The cooking utensils burner of claim 1, characterized in that the inside of the gas nozzle has several through holes, the two ends of the through holes are respectively located on the side wall of the gas nozzle and the end surface of the gas nozzle, the inner channel of the through holes forms the first air channel, and the ends of all the through holes located on the end surface are distributed annularly outside the spout.

4. The cooking appliance burner of claim 1, wherein the orifice plate is located in the expanded section of the injection pipe, and the cavity wall and the inner wall of the injection pipe jointly form the second air passage.

5. Hob burner as claimed in claim 4, wherein the chamber wall is helically extending.

6. The stove burner of claim 1, further comprising a wind gate plate fixed at the air inlet of the injection pipe, wherein a plurality of openings are formed in the surface of the wind gate plate, and the second air passage is communicated to the outside through the openings.

7. The cooktop burner of claim 6, wherein the anti-backfire means further comprises a sealing ring disposed between the anti-backfire means and the damper plate, the surface of the gas nozzle having a sealing groove, the sealing ring being located in the sealing groove.

8. The cooking utensils burner of claim 6, characterized in that an elastic element is arranged between the wind gate plate and the gas nozzle, one end of the elastic element is fixed on the side wall of the gas nozzle, and the other end of the elastic element is abutted against the surface of the wind gate plate.