CN111594836A

CN111594836A - Combustor for gas stove and gas stove

Info

Publication number: CN111594836A
Application number: CN202010563314.8A
Authority: CN
Inventors: 刘迪
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2020-08-28

Abstract

The application relates to the technical field of cookers, in particular to a burner for a gas cooker and a combustion cooker comprising the burner. The burner for the gas stove comprises a volute, an ejector and a pot body, wherein a gas mixing chamber with a volute flow channel is formed in the volute, a sunken part with a closed bottom and an opened top is formed in the middle of the volute, and an air hole communicated with the volute flow channel and the sunken part is formed in the volute; the air outlet of the ejector is communicated with the air inlet of the air mixing chamber, and the air outlet direction of the ejector is tangential to the volute flow channel; the inlet end of the basin body is matched and installed in the depressed part just the import of the basin body with the gas pocket intercommunication, the exit end of the basin body has set gradually anti-backfire orifice plate and foam metal heat-generating body. The air outlet direction of the ejector is tangent to the volute flow channel of the air mixing chamber, so that the pressure loss caused by sudden expansion of the flow channel between the ejector and the air mixing chamber is eliminated, the air mixing chamber of the volute flow channel prolongs the air mixing time, and the air mixing effect is improved.

Description

Combustor for gas stove and gas stove

Technical Field

The application relates to the technical field of cookers, in particular to a burner for a gas cooker, and further relates to a combustion cooker comprising the burner.

Background

At present, in the field of kitchen ranges, circular or annular gas mixing chambers are generally adopted in the structure of burners for gas ranges, and an ejector is generally communicated with the gas mixing chambers along the radial direction of the gas mixing chambers. On one hand, the structure can cause the sectional area of the flow passage of the high-speed mixed gas sprayed by the ejector to be suddenly increased, and the speed to be suddenly reduced, thereby causing great pressure loss; on the other hand, the flow velocity distribution of the mixed gas flowing out of the gas mixing chamber is uneven, and further the flame distribution of the burner is uneven.

Disclosure of Invention

In order to solve the technical problem, the application provides a burner for a gas stove and a gas stove comprising the burner, so that the pressure loss caused by sudden expansion of a flow channel between an ejector and a gas mixing chamber can be eliminated.

In order to achieve the above object, according to one aspect of the present invention, there is provided a burner for a gas range.

According to this application of embodiment's combustor for gas-cooker, it includes:

the volute is internally provided with a gas mixing chamber with a volute flow channel, the middle part of the volute is provided with a sunken part with the bottom closed and the top opened, and the volute is provided with a gas hole for communicating the volute flow channel with the sunken part;

the air outlet of the ejector is communicated with the air inlet of the air mixing chamber, and the air outlet direction of the ejector is tangential to the volute flow channel;

the inlet end of the basin body is installed in the concave part in a matching mode, the inlet of the basin body is communicated with the air hole, and the outlet end of the basin body is sequentially provided with an anti-backfire pore plate and a foam metal heating body.

Further, the air hole is an annular strip-shaped hole formed along the direction of the volute.

Further, the air inlet of the ejector is a rotational flow air inlet, the rotational flow air inlet comprises a plurality of flow guide holes, and the flow guide holes are arranged around the fuel gas inlet of the ejector in a circular array.

Furthermore, the number of the flow guide holes is 3-12.

Furthermore, the included angle between the trend of the flow guide hole and the central axis of the ejector is 20-70 degrees.

Furthermore, the characteristic line of the flow channel of the volute flow channel is a volute line with the angle of 300-420 degrees, the section of the volute flow channel is circular or approximately circular, and the section area of the volute flow channel is gradually reduced along the flowing direction of the airflow.

Furthermore, a boss is formed on the inner edge of the outlet end of the pot body, and the anti-backfire pore plate is arranged on the boss.

Furthermore, the anti-backfire hole plate is made of metal or ceramic, a plurality of circular through holes are formed in the anti-backfire hole plate, and the distance between every two adjacent through holes is 1.25-4 times of the diameter of each through hole.

Furthermore, a gap is reserved between the anti-backfire pore plate and the foam metal heating body.

In order to achieve the above object, according to a second aspect of the present technical solution, the present technical solution further provides a gas range.

According to the gas-cooker of this application embodiment, it includes the combustor that this application first aspect provided.

In the combustor provided by the technical scheme, the air outlet direction of the ejector is tangent to the volute flow channel of the gas mixing chamber, so that the pressure loss caused by sudden expansion of the flow channel between the ejector and the gas mixing chamber is eliminated, the gas mixing chamber of the volute flow channel increases the mixing time of gas, and the gas mixing effect is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic structural view of a combustor provided in an embodiment of the present invention;

FIG. 2 is an exploded view of a burner provided by an embodiment of the present invention;

FIG. 3 is a vertical cross-sectional view of a burner provided by an embodiment of the present invention;

FIG. 4 is a horizontal cross-sectional view of a volute and an eductor in a burner according to an embodiment of the present invention, the cross-sectional view passing through the central axis of the eductor;

FIG. 5 is a horizontal cross-sectional view of a volute and an eductor in a burner according to an embodiment of the present invention, the cross-sectional view being near the bottom of the plenum;

FIG. 6 is an oblique view of a vertical cut-through of the volute in a combustor provided by an embodiment of the present invention at 45.

The reference numerals in the figures have the following meanings:

1. an ejector; 2. a volute; 3. a pot body; 4. an anti-backfire orifice plate; 5. a foam metal heating element; 6. a rotational flow air inlet; 7. a gas mixing chamber; 8. a recessed portion; 9. air holes; 10. a flow guide hole; 11. and a gas inlet.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the above-described drawings are intended to cover a non-exclusive inclusion, such that a system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such article or apparatus.

In this application, the terms "upper", "lower", "inner", "middle", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

As shown in fig. 1 to 6, the burner for a gas stove provided in the embodiment of the present application includes a volute 2, an injector 1, a pot body 3, an anti-backfire orifice plate 4 and a foam metal heating element 5, wherein a gas mixing chamber 7 having a volute flow channel is formed in the volute 2, a depressed part 8 with a closed bottom and an open top is formed in the middle of the volute 2, and an air hole 9 communicating the volute flow channel and the depressed part 8 is formed in the volute 2; an air outlet of the ejector 1 is communicated with an air inlet of the air mixing chamber 7, and an air outlet direction of the ejector 1 is tangential to the volute flow channel; the entrance end of the basin body 3 is matched and installed in the depressed part 8 and the inlet of the basin body 3 is communicated with the air hole 9, and the outlet end of the basin body 3 is sequentially provided with an anti-backfire pore plate 4 and a foam metal heating body 5.

The working principle of the burner in the above embodiment is as follows: the fuel gas inlet 11 of the ejector 1 is used for externally connecting a fuel gas pipeline, threads for installing a fuel gas pipe can be arranged on the fuel gas inlet 11, high-speed fuel gas is ejected by the fuel gas inlet 11 to absorb surrounding ambient air, air enters the ejector 1 through the air inlet of the inlet end of the ejector 1, and enters the gas mixing chamber 7 together with the fuel gas in the ejector 1 after three processes of contraction, mixing and diffusion; air and gas along the vortex runner of gas mixing chamber 7 mixes on one side through the runner side gas pocket 9, and final blender flows in the entrance point of the basin body 3, and then reaches foam metal heat-generating body 5 after the exit end of the opposite side from the basin body 3 passes through anti-backfire orifice plate 4, and the mist is ignited the back through the external world and is stably burnt in foam metal heat-generating body 5, the heat through the heat radiation that high temperature foam metal heat-generating body 5 produced with the high-temperature gas convection heat transfer transmission of the 3 exit ends of the basin body bottom receives the hot side, and then heats the food in the pan. The air outlet direction of the ejector 1 is tangent to the volute flow channel of the air mixing chamber 7, so that the pressure loss caused by sudden expansion of the flow channel between the ejector 1 and the air mixing chamber 7 is eliminated, the air mixing time of the air is prolonged by the air mixing chamber 7 of the volute flow channel, and the air mixing effect is improved.

As shown in fig. 6, the air holes 9 are annular strip-shaped holes formed along the direction of the volute 2, and the annular strip-shaped holes enable fluid in the air mixing chamber 7 to uniformly flow into the basin body 3 along the radial direction of the flow channel, so that the velocity distribution and the component distribution of the mixed gas in the basin body 3 are relatively uniform, and the combustion process is more uniform and sufficient.

As shown in fig. 2 to 6, the air inlet of the ejector 1 is a cyclone air inlet 6, the cyclone air inlet 6 can make air enter in a cyclone manner, so as to greatly enhance the premixing effect of air and fuel gas, the cyclone air inlet 6 includes a plurality of flow guide holes 10, the flow guide holes 10 are arranged in a circular array around the fuel gas inlet 11 of the ejector 1, and the arrangement mode enables ambient air around the fuel gas inlet 11 to be uniformly sucked into the ejector 1, so as to improve the uniformity of mixed gas. Preferably, the number of the flow guide holes 10 is 3-12, preferably 8, so that the air inlet area can be increased while the sufficient structural strength of the cyclone air inlet 6 is ensured.

Preferably, as shown in fig. 5, an included angle between the direction of the diversion hole 10 and the central axis of the ejector 1 is an angle, the included angle is preferably 20-70 degrees, and more preferably 25 degrees, and the included angle helps to generate a proper rotational flow for the air, so as to enhance the premixing effect between the air and the fuel gas.

Furthermore, the characteristic line of the flow channel of the volute flow channel is a vortex line with the temperature of 300-420 degrees, preferably 355 degrees, so that the gas mixing process can be prolonged, and the gas mixing effect can be enhanced. In addition, as shown in fig. 3 to 6, the cross section of the volute flow passage of the air mixing chamber 7 is circular or approximately circular, and the cross-sectional area of the volute flow passage is gradually reduced along the flowing direction of the air flow, so that the flow velocity of the air flowing into the concave part 8 from each section of the volute flow passage through the air holes 9 can be kept as uniform as possible, and the distribution of the air flow velocity can be made as uniform as possible.

The section of the pot body 3 is circular, the inlet end is thin and the outlet end is thick, and an arc curved boss is formed on the outer edge of the inlet end and is used for being matched and connected with the depressed part 8 of the volute 2, so that the inlet of the pot body 3 is communicated with the air hole 9 of the volute 2. A boss is formed at the inner edge of the outlet end of the pot body 3, the anti-backfire pore plate 4 is arranged on the boss, and the anti-backfire pore plate can be fixed through structures such as a clamping ring.

The anti-backfire pore plate 4 is made of metal or ceramic, a plurality of circular through holes are formed in the anti-backfire pore plate 4, and the distance between every two adjacent through holes is 1.25-4 times, preferably 2 times, of the diameter of each through hole, so that the proper gas flow rate can be adjusted. In addition, a gap is reserved between the anti-backfire pore plate 4 and the foam metal heating body 5 for preventing backfire.

Specifically, the size and shape of each structure in the pot body 3, the volute 2, the ejector 1, the anti-backfire orifice plate 4 and the foam metal heating body 5, the material of each structure and the like are correspondingly adjusted according to the specific use environment, so that the above functions can be realized, and the technical personnel in the field can set the functions by themselves.

It should be noted that other configurations and operations of the burner of the present application will be known to those skilled in the art, and reference may be made to the structure of the related art device, which will not be described in detail herein.

The embodiment of the application also correspondingly protects the gas stove using the burner. The gas stove disclosed in the embodiment of the application comprises the burner provided by the embodiment, so that the gas stove with the burner also has all the technical effects, and the details are not repeated herein. Other constructions and operations of the burner are known to those skilled in the art and will not be described in detail herein.

Some embodiments in this specification are described in a progressive or parallel manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A burner for a gas cooker, comprising:

the volute (2) is internally provided with a gas mixing chamber (7) with a volute flow channel, the middle part of the volute (2) is provided with a sunken part (8) with the bottom closed and the top opened, and the volute (2) is provided with an air hole (9) for communicating the volute flow channel with the sunken part (8);

the air outlet of the ejector (1) is communicated with the air inlet of the air mixing chamber (7), and the air outlet direction of the ejector (1) is tangential to the volute flow channel;

the basin body (3), its entrance point match install in depressed part (8) just the import of the basin body (3) with gas pocket (9) intercommunication, the exit end of the basin body (3) has set gradually tempering prevention orifice plate (4) and foam metal heat-generating body (5).

2. Burner for gas cookers, according to claim 1, characterized in that said air holes (9) are annular strip holes made along the trend of said volute (2).

3. The burner for the gas cooker according to claim 1, wherein the air inlet of the injector (1) is a swirl air inlet (6), the swirl air inlet (6) comprises a plurality of flow guide holes (10), and the flow guide holes (10) are arranged in a circular array around the gas inlet (11) of the injector (1).

4. Burner for gas cookers according to claim 3, characterized in that the number of deflector holes (10) is 3 to 12.

5. The burner for the gas cooker according to claim 3, wherein an included angle between the trend of the flow guide hole (10) and the central axis of the ejector (1) is 20-70 degrees.

6. The burner for a gas cooker as set forth in claim 1, wherein the characteristic flow path line of the spiral flow path is a spiral line of 300 to 420 degrees, the cross section of the spiral flow path is circular or approximately circular, and the cross-sectional area of the spiral flow path is gradually reduced along the flow direction of the gas flow.

7. Burner for gas cookers, according to claim 1, characterized in that the inner edge of the outlet end of the bowl (3) is formed with a boss on which the anti-backfire orifice plate (4) is placed.

8. The burner for the gas cooker as recited in claim 1, wherein the anti-backfire hole plate (4) is made of metal or ceramic, a plurality of circular through holes are formed in the anti-backfire hole plate (4), and the distance between every two adjacent through holes is 1.25-4 times of the diameter of each through hole.

9. Burner for gas cookers according to claim 1, characterized in that a gap is left between the anti-backfire orifice plate (4) and the metal foam heat-generating body (5).

10. A gas burner comprising a burner as claimed in any one of claims 1 to 9.