CN210069844U

CN210069844U - Premixing burner and premixing gas stove

Info

Publication number: CN210069844U
Application number: CN201920607199.2U
Authority: CN
Inventors: 关忠元
Original assignee: Shenzhen Everyone Energy Saving Equipment Co Ltd
Current assignee: Shenzhen Everyone Energy Saving Equipment Co Ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-02-14
Anticipated expiration: 2029-04-29

Abstract

The utility model relates to a premix burner and premix gas-cooker, central authorities in the furnace end bottom set up first gas outlet, and be provided with an auxiliary combustion device in this first gas outlet department, and simultaneously, be provided with a plurality of second gas outlets on auxiliary combustion device, and make this second gas outlet just to the air jet of distributor, thus, when adjusting little fire gear, although the combustible gas air-fuel ratio of air jet department can obvious grow, but the combustible gas's of second gas outlet department air-fuel ratio does not have the change basically, consequently, can keep normal burning, and because auxiliary combustion device is located the central authorities of furnace end bottom, its flame can erupt the bigger combustible gas of air jet department air-fuel ratio and ignite, realize the auxiliary combustion, thereby can keep not going out at little fire gear.

Description

Premixing burner and premixing gas stove

Technical Field

The utility model relates to a gas equipment technical field, in particular to premix combustor and premix gas stove.

Background

The current commercial gas cookers mainly comprise two types, one is directly connected with combustible gas for combustion, and the other is that the combustible gas and air are premixed and then introduced into a premixing gas cooker for combustion, wherein the combustible gas cooker is mainly used in families; the latter is mainly applied to places such as dining halls, restaurants, hotels, food processing plants and the like, and is characterized by high power, quick heating and quick tempering.

In the prior common premixing gas stove, a burner is most popular among consumers, and the structure of the burner is that a distributor is arranged in a stove head, the inner wall of the distributor is provided with a plurality of annularly arranged gas nozzles, and premixed combustible gas is ejected from the stove head through the gas nozzles; a side ignition device or other normally open fire devices are arranged beside the fire distributor and used for igniting combustible gas sprayed from the gas nozzles.

The premix burning kitchen of above-mentioned structure, because combustible gas is from the outside blowout of inner wall of distributor, combustible gas is through the air premix moreover, consequently, have a problem that when adjusting minimum shelves or lower shelves, want to use the small fire to fry in shallow oil, fry, when cooking process such as slow boiling, combustible gas often can lead to some or all fumaroles to extinguish because of the air-fuel ratio is too big, difficult in order to realize the small fire culinary art, can't satisfy user's multiple culinary art demand. If the air-fuel ratio is reduced in order to keep the condition that the air jet cannot be extinguished when the small fire is adjusted, insufficient combustion is caused due to the fact that the air-fuel ratio is too small when the large fire is used, carbon deposit is increased, even deflagration occurs, and potential safety hazards are possibly brought.

SUMMERY OF THE UTILITY MODEL

Based on this, there is a need for a premix burner and a premix gas cooker, which can not only facilitate the use of small fire, but also enable the combustion to be more sufficient when using large fire, so as to enhance the user experience and increase the safety performance of the product.

In order to achieve the above purpose, the present invention adopts the following technical solutions.

Firstly, the utility model provides a premix burner, which comprises a furnace end, a distributor and a sealing cover, wherein the furnace end is in a bowl shape and is provided with a cylindrical inner cavity, the distributor is integrally cylindrical and is suitable for being detachably accommodated in the cylindrical inner cavity, and the sealing cover covers the upper part of the furnace end and fixes the distributor;

a first air outlet is formed in the center of the bottom of the furnace end, and an auxiliary combustion device is arranged at the first air outlet;

the auxiliary combustion device comprises a connecting part connected with the first air outlet and a combustion part extending upwards from the connecting part, the combustion part is provided with a plurality of second air outlets, and the plurality of second air outlets are communicated with the first air outlet after respectively penetrating through the connecting part;

the inner wall of the distributor is provided with a plurality of air nozzles, and the air nozzles are opposite to the auxiliary combustion device.

Preferably, the end face of the connecting portion of the auxiliary combustion device is provided with a plurality of second air inlets, and the plurality of second air inlets are communicated with the plurality of second air outlets in a one-to-one correspondence manner.

Preferably, the combustion part is approximately in the shape of a circular truncated cone, and the plurality of second air outlets are obliquely arranged and aligned with a part of the air outlets.

Preferably, the number of the second air outlets is 6-12.

Preferably, the sealing cover is provided with a thread which is screwed and connected with the upper part of the furnace end.

Preferably, the inner chamber bottom of furnace end still is provided with the third gas outlet of a plurality of annular arrangements, a plurality of third gas outlets are located a smooth composition surface, the lower terminal surface of distributor be suitable for with composition surface gas tightness laminating, just the lateral wall of distributor be suitable for with the inside of furnace end is closely laminated.

Preferably, the distributor is provided with a plurality of third air inlets extending along the bus direction in the lateral wall from its lower terminal surface, the inner wall of distributor is provided with the grooving that a plurality of circles circumference set up, the grooving with the third air inlet link up, form the jet orifice.

Preferably, the distributor is mainly formed by stacking a plurality of annular gaskets, each annular gasket comprises a first gasket with a plurality of annularly arranged U-shaped notches and a second gasket without notches, the first gasket and the second gasket are stacked in a staggered mode, and the U-shaped notches of the first gaskets are aligned to form the air injection ports.

Secondly, the utility model provides a premix gas stove, including kitchen range and combustor, the combustor set up in the kitchen range, the combustor above-mentioned premix combustor, just the combustor is provided with and is used for lighting the side ignition of combustor, it is just right that side ignition is right supplementary burner.

Preferably, the bottom of the premixed gas stove is connected with a main pipeline, premixed combustible gas is introduced into the main pipeline, and the combustible gas is suitable for entering the auxiliary combustion device through the first gas outlet and the second gas inlet in sequence and being sprayed out and combusted through the second gas outlet; the combustible gas is suitable for entering the distributor and is ejected out of the gas nozzle for combustion; and the combustible gas is suitable for being sprayed out and combusted through the side ignition device, and the burner and the auxiliary combustion device are ignited.

Compared with the prior art, the utility model is provided with the first air outlet at the center of the bottom of the furnace end, and the auxiliary combustion device is arranged at the first air outlet, and simultaneously, a plurality of second air outlets are arranged on the auxiliary combustion device and are opposite to the air jet ports of the distributor, thus, when the fire gear is adjusted to be small, although the air-fuel ratio of the combustible gas at the air injection port is obviously increased, the air-fuel ratio of the combustible gas at the second air outlet is basically unchanged, therefore, the normal combustion can be kept, and because the auxiliary combustion device is positioned at the center of the bottom of the furnace end, the flame ejected by the burner can ignite combustible gas with large air-fuel ratio at the air jet to realize auxiliary combustion, therefore, the small fire gear can be kept not to be extinguished, the small fire can be conveniently used when a user uses the gas stove, and the gas stove is safe and reliable, so that the use experience of the user and the safety performance of a product are greatly improved.

Drawings

FIG. 1 is a schematic view of an overall structure of a premix burner in the first embodiment;

FIG. 2 is an exploded view of a premix burner according to an embodiment of the present invention;

FIG. 3 is a schematic view of the overall structure of an auxiliary combustion apparatus according to one embodiment of the present invention;

FIG. 4 is a schematic perspective view of an intermediate fire extinguisher according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of the fire divider of FIG. 4;

FIG. 6 is a schematic perspective view of the second fire extinguisher according to the present embodiment;

FIG. 7 is an exploded view of the fire divider of FIG. 6;

FIG. 8 is a cross-sectional view of the distributor of FIG. 6;

fig. 9 is a schematic view of the overall structure of the premix gas burner in the third embodiment.

Detailed Description

The following further description is made with reference to the drawings and specific embodiments.

The first embodiment is as follows:

as shown in fig. 1 and 2, the present embodiment provides a premix burner 100 for burning premixed combustible gas, which mainly includes a burner 10, a distributor 20, and a sealing cover 30, wherein the burner 10 is in a pot shape without a cover and has a cylindrical inner cavity, the distributor 20 is in an overall cylindrical shape and can be detachably received in the cylindrical inner cavity, and the sealing cover 30 covers the burner 10 and fixes the distributor 20, while preventing combustible gas from leaking out from a gap between the distributor 20 and the burner 10.

A first air outlet 11 is arranged at the center of the bottom of the furnace end 10, and an auxiliary combustion device 40 is arranged at the first air outlet 11; the inner wall of the distributor 20 is provided with a plurality of gas nozzles 21, and the gas nozzles 21 are opposite to the auxiliary combustion device 40.

Referring to fig. 3, the auxiliary combustion device 40 includes a connection portion 41 connected to the first air outlet 11, and a combustion portion 42 extending upward from the connection portion 41. The combustion portion 42 is substantially circular truncated cone-shaped, a plurality of second air outlets 43 are arranged along the circumferential direction of the circular truncated cone, and the plurality of second air outlets 43 respectively penetrate through the combustion portion 42 and the connecting portion 41 and then are communicated with the first air outlet 11. The plurality of second gas outlets 43 are arranged obliquely and are directed at a portion of the gas outlets 21 so that when the combustible gas is combusted at the second gas outlets 43, the flame generated can ignite the combustible gas at the gas outlets 21.

For easy assembly and disassembly, the auxiliary combustion device 40 is connected to the first air outlet 11 by a screw 411 provided at the connecting portion 41. After screwing, the combustible gas can be prevented from leaking out from the gap between the auxiliary combustion device 40 and the first gas outlet 11.

Similarly, the sealing cover 30 is screwed to the upper portion of the burner 10 by a screw 31 to enhance the air tightness.

The second gas outlets 43 on the auxiliary combustion device 40 are all round holes, in order to ensure that the air-fuel ratio of the combustible gas coming out from the round holes can still be normally combusted when the fuel gas is shifted to a small fire gear, the number of the second gas outlets 43 is not too large, preferably 6 to 12, and the number of the second gas outlets is preferably 8, on one hand, the aperture is considered, on the other hand, because the volume of the auxiliary combustion device 40 is limited, if the opening is too large, the aperture is inevitably small, and the flame of the auxiliary combustion can be influenced. If the number of the holes is too small, the ignition point is low, and the optimal auxiliary combustion effect cannot be achieved.

In order to further enhance the auxiliary combustion effect, the end surface of the connecting portion 41 of the auxiliary combustion device 40 of the present embodiment is provided with the same number of second air inlets 44 (8 in the present embodiment, in other embodiments, if the number of the second air outlets 43 is 6-12, the number of the second air inlets 44 is also 6-12), and these second air inlets 44 are communicated with the plurality of second air outlets 43 in a one-to-one correspondence manner. Since the second gas inlets 44 are directly communicated with the first gas outlets 11, the combustible gas ejected from each second gas outlet 43 has the same pressure, so that the combustion is more stable, the flame size is substantially consistent, the auxiliary combustion is more reliable, and the flame of the premix burner 100 of the present embodiment is more uniform.

Referring to fig. 2 again, the bottom of the inner cavity of the burner 10 of the present embodiment is further provided with a plurality of third air outlets 12 arranged in a ring shape, the third air outlets 12 are located on a flat joint surface 13, and correspondingly, the lower end surface 22 of the distributor 20 is also a flat surface, when the distributor 20 is installed in the burner 10, the lower end surface 22 of the distributor 20 can maintain an airtight fit with the joint surface 13, so as to prevent the combustible gas from leaking out between the lower end surface 22 and the joint surface 13.

Further, as shown in fig. 4 and 5, the distributor 20 of the present embodiment is provided with a plurality of third air inlets 23 extending along the generatrix direction in the side wall from the lower end surface 22 thereof, and at the same time, the inner wall of the distributor 20 is provided with a plurality of circles of cutting grooves 24 arranged along the circumferential direction, the cutting grooves 24 are communicated with the third air inlets 23 to form a plurality of the air nozzles 21, so that the combustible gas can be ejected from the air nozzles 21 for combustion after passing through the third air outlets 12 and the third air inlets 23.

In addition, the distributor 20 of the present embodiment further includes a ring of annular gap 25 disposed on the lower end surface 22, the annular gap 25 is used for avoiding the third air outlet 12, and the annular gap 25 is communicated with the third air inlet 23, so that, on one hand, the third air outlet 12 and the third air inlet 23 do not need to be aligned when the distributor 20 is installed, and on the other hand, the premixed combustible gas can be further mixed after entering the annular gap 25 from the third air outlet 12, and then enters the air outlets 21 through the third air inlets 23 for combustion.

In this embodiment, each air vent 21 is an independent air source channel, and even if a backfire condition occurs accidentally, explosion does not occur, thereby greatly improving the safety performance of the product.

Example two:

referring to fig. 6 to 8, the present embodiment provides a premix burner, which has a structure and a function substantially the same as those of the first embodiment, except that the distributor 20 'of the present embodiment is mainly formed by stacking a plurality of annular washers, wherein the annular washers include two types, one type is a first washer 21' having a plurality of U-shaped notches 211 'arranged in a circular shape, and the other type is a common second washer 22' having no notches, and the first washer 21 'and the second washer 22' are stacked alternately with the U-shaped notches 211 'of the first washers 21' aligned. Each 1-2 first washers 21 ' sandwich 1-2 second washers 22 ', and each 1-2 second washers 22 ' sandwich 1-2 first washers 21 ', … …, thus forming a substantially cylindrical distributor 20 '. Finally, all the ring gaskets are fixed by riveting or welding to form the premix burner of the embodiment.

Preferably, the distributor 20 ' also has a plurality of third air inlets 23 ', and each third air inlet 23 ' is connected to one of the U-shaped notches 211 ', so that one of the air ports 21 is formed at each of the U-shaped notches 211 ', and when the U-shaped notches 211 ' are aligned, the air ports 21 are aligned on the inner wall of the distributor 20 '.

The structure of the distributor 20' of the present embodiment is relatively low in both material and machining costs compared to conventional distributors, which is advantageous for reducing production costs. And each air jet 21 has an independent air source channel, thereby having higher safety performance.

Example three:

referring to fig. 1, 2 and 9, the present embodiment further provides a premix gas range 200 including a burner (not shown) disposed at the center of the burner, and a burner using the premix burner 100 according to the first embodiment or the second embodiment, wherein a side ignition device 300 for igniting the burner is disposed beside the burner, and the side ignition device 300 faces the auxiliary combustion device 40 in the burner.

Specifically, the bottom of the premix gas stove 200 is connected to a main pipe 400, and premixed combustible gas is introduced into the main pipe 400, and the combustible gas sequentially enters the auxiliary combustion device through the first gas outlet 11 and the second gas inlet 44, and is sprayed out and combusted through the second gas outlet 43 to form auxiliary combustion flame. Meanwhile, the combustible gas enters the distributor 20 through the third gas outlet 12 and the third gas inlet 23 in sequence, and is ejected and combusted through the gas jet 21 to form main flame. In addition, the combustible gas is also jetted out from the side ignition device 300 through a secondary duct 500 to be combusted, a normally open fire is formed, and the burner 100 and the auxiliary combustion device 40 are ignited.

When the premix gas range 200 of the present embodiment is adjusted to a small fire position, the pressure of the combustible gas in the distributor 20 becomes small, the air-fuel ratio at the gas ejection port 21 becomes large, and the ignition point may not be reached, resulting in extinguishing of a part of the gas ejection port. At this time, since the auxiliary combustion device 40 is added, which is independently located at the central position of the burner 100, and the air-fuel ratio of the combustible gas ejected from the second air outlet 43 is substantially unchanged, normal combustion is possible, and the auxiliary combustion flame generated thereby can ignite the combustible gas that has been extinguished at the air outlet 21, so that the main flame can be kept burning normally without being extinguished. Therefore, no matter in the big fire gear or the small fire gear, the premixed gas stove 200 of the present embodiment can burn normally, and the flame is stable, so that the user can use various cooking processes to make various gourmets.

In summary, the utility model adopts the structure that the first air outlet is arranged at the center of the bottom of the furnace end, the auxiliary combustion device is arranged at the first air outlet, and simultaneously, a plurality of second air outlets are arranged on the auxiliary combustion device, and the second air outlets are opposite to the air jet ports of the distributor, when the fire gear is adjusted to be small, although the air-fuel ratio of the combustible gas at the air injection port is obviously increased, the air-fuel ratio of the combustible gas at the second air outlet is basically unchanged, therefore, the normal combustion can be kept, and because the auxiliary combustion device is positioned at the center of the bottom of the furnace end, the flame ejected by the burner can ignite combustible gas with large air-fuel ratio at the air jet to realize auxiliary combustion, therefore, the small fire gear can be kept not to be extinguished, the small fire can be conveniently used when a user uses the gas stove, and the gas stove is safe and reliable, so that the use experience of the user and the safety performance of a product are greatly improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a premix combustor, includes furnace end, distributor and sealed lid, its characterized in that: the furnace end is in a bowl shape and is provided with a cylindrical inner cavity, the distributor is integrally cylindrical and is suitable for being detachably contained in the cylindrical inner cavity, and the sealing cover covers the upper part of the furnace end and fixes the distributor;

2. The premix burner of claim 1, wherein: the end face of the connecting portion of the auxiliary combustion device is provided with a plurality of second air inlets, and the plurality of second air inlets are communicated with the plurality of second air outlets in a one-to-one correspondence mode.

3. The premix burner of claim 1, wherein: the combustion part is roughly in the shape of a circular truncated cone, and the plurality of second air outlets are obliquely arranged and are aligned to part of the air outlets.

4. The premix burner of claim 2, wherein: the number of the second air outlets is 6-12.

5. The premix burner of claim 1, wherein: the sealing cover is provided with threads which are screwed and connected with the upper part of the furnace end.

6. A premix burner as in any of claims 1 to 5, wherein: the inner chamber bottom of furnace end still is provided with the third gas outlet that a plurality of rings were arranged, a plurality of third gas outlets are located a smooth composition surface, the lower terminal surface of distributor be suitable for with the composition surface gas tightness laminating, just the lateral wall of distributor be suitable for with the inside of furnace end is closely laminated.

7. The premix burner of claim 6, wherein: the distributor is provided with a plurality of third air inlets extending along the bus direction in the side wall from the lower end face, the inner wall of the distributor is provided with a plurality of cutting grooves circumferentially arranged, and the cutting grooves are communicated with the third air inlets to form the air jet.

8. The premix burner of claim 6, wherein: the distributor is mainly formed by stacking a plurality of annular gaskets, each annular gasket comprises a first gasket with a plurality of annularly arranged U-shaped notches and a second gasket without notches, the first gasket and the second gasket are stacked in a staggered mode, the U-shaped notches of the first gaskets are aligned, and the air injection ports are formed.

9. The utility model provides a premix gas stove, includes kitchen range and combustor, the combustor set up in the kitchen range, its characterized in that: the burner is a premix burner as defined in any one of claims 1 to 8, and is provided with a side ignition device for igniting the burner, wherein the side ignition device is opposite to the auxiliary combustion device.

10. A premix gas burner as set forth in claim 9, wherein: the bottom of the premixing gas stove is connected with a main pipeline, premixed combustible gas is filled in the main pipeline, and the combustible gas is suitable for entering the auxiliary combustion device through the first gas outlet and the second gas inlet in sequence and being sprayed out and combusted through the second gas outlet; the combustible gas is suitable for entering the distributor and is ejected out of the gas nozzle for combustion; and the combustible gas is suitable for being sprayed out and combusted through the side ignition device, and the burner and the auxiliary combustion device are ignited.