CN115899695A - Injection assembly, injection system and gas cooking utensils of combustor - Google Patents

Abstract

The injection assembly of the burner comprises an injection pipe and an air inlet seat, wherein the injection pipe is provided with an air inlet, and the air inlet is provided with a central area and a peripheral area positioned around the central area; the gas inlet seat is provided with a gas channel and a blast air channel, a gas inlet of the gas channel is used for being communicated with a gas source in a fluid mode, and an air inlet of the blast air channel is used for being communicated with a blast gas source in a fluid mode; along the flowing direction of the fuel gas, the gas inlet seat is positioned at the upstream of the gas inlet of the injection pipe; the air outlet of the blast air passage is opposite to the central area of the air inlet; at least two gas outlets of the gas channel are opposite to the surrounding area of the gas inlet and are arranged at intervals along the first circumference. The invention also discloses an injection system with the injection assembly and a gas cooker. Compared with the prior art, the invention can avoid the influence of blast air flow on natural injection.

Description

Injection assembly, injection system and gas cooking utensils of combustor

Technical Field

The invention belongs to the technical field of household kitchenware, and particularly relates to an injection assembly and an injection system of a combustor and a gas stove.

Background

In the existing gas cooker, in order to improve the supply of primary air and enable the gas to be completely combusted, a blowing type combustor is designed, for example, a structure disclosed in the utility model patent with the patent number of ZL200720088825.9 of utility model patent of an injection type blowing type combustor for a gas cooker (with the publication number of CN 201166369Y) comprises an injector, a gas connecting pipe, a gas nozzle, a combustion chamber, a flame stabilizing fire hole assembly, an air chamber and an axial flow fan, wherein a circle of secondary air ports are arranged on the edge of the bottom of the combustion chamber, the flame stabilizing fire hole assembly is uniformly distributed at the bottom of the combustion chamber, the bottom of the flame fire hole assembly is communicated with the head of the injector, the tail of the injector is connected with the axial flow fan through the air chamber, and the gas nozzle is connected with the gas connecting pipe and fixed at the center of the injector.

The existing injection assembly has the following technical problems:

1. because the gas nozzle is positioned in the center of the air chamber, the air flow blown out of the air chamber can surround the gas nozzle in a circle, so that the air introduced by the air blowing device can form a circle of air curtain, and the air near the air inlet of the injection pipe is blown outwards, thereby influencing the capability of injecting natural air when the gas nozzle injects;

2. the gas that the gas nozzle jetted out mixes inhomogeneously with air in the induction pipe, for example: when the combustor during operation, the air in the kitchen shell is heated and is leaded to ambient temperature higher, and is close the combustor temperature more moreover and increases more obviously, and when high temperature, the gas that jets out by the gas nozzle is heated rapidly, and the volume increases fast, and density reduces, and buoyancy can not neglect to the influence that the gas jetted the direction, and the trajectory of gas injection has certain tilt up for it is inhomogeneous to draw the mixture of intraductal air and gas to penetrate.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide an injection assembly of a combustor to avoid the influence of blast air flow on natural injection, aiming at the current situation of the prior art.

The second technical problem to be solved by the invention is to provide an injection assembly of a combustor, so as to improve the mixing uniformity between gas emitted from a gas outlet and air subjected to blast.

The third technical problem to be solved by the invention is to provide an injection system with the injection assembly.

The fourth technical problem to be solved by the invention is to provide the gas cooker with the injection system.

The technical scheme adopted by the invention for solving the first technical problem is as follows: an injection assembly for a burner comprising:

the injection pipe is provided with an air inlet, the air inlet is provided with a central area and a peripheral area positioned around the central area, the length direction of the injection pipe is a first axial direction, and the direction around the first axial direction is a first circumferential direction;

an air inlet seat having a gas passage and a blast air passage, wherein a gas inlet of the gas passage is adapted to be in fluid communication with a gas source and an air inlet of the blast air passage is adapted to be in fluid communication with a blast gas source;

the gas inlet seat is positioned at the upstream of the gas inlet of the injection pipe along the flowing direction of the fuel gas;

the method is characterized in that:

the air outlet of the air blowing passage is opposite to the central area of the air inlet;

at least two gas outlets of the gas channel are opposite to the surrounding area of the gas inlet and are arranged at intervals along the first circumference.

Therefore, the gas emitted from the gas outlet can better inject the outside natural air without being influenced by the airflow discharged from the air outlet; and because the air outlet points to the central area of the air inlet, the negative pressure of the central area can be increased, so that the natural injection effect is further improved.

The gas channel and the blast air channel can be isolated from each other or not. Preferably, the gas channel and the air blowing channel are isolated from each other. The gas channel of isolation, blast air passageway make gas and blast air can only draw intraductal the mixing of penetrating, so, only have the gas in the gas channel and do not have the air, can avoid the gas in the gas channel to take place the condition of explosion because of contact air.

The air inlet seat can be a single component formed with the gas channel and the blast air channel, or can be an assembly formed by arranging and limiting the independent gas channel and the blast air channel together. Preferably, the air inlet seat is formed with a gas channel, an air blowing channel and an air outlet end wall opposite to the air inlet of the injection pipe, and a gas outlet of the gas channel and an air outlet of the air blowing channel both penetrate through the air outlet end wall. The gas inlet seat is a single component formed with a gas channel and a blast air channel, and the gas outlets and the air outlets are distributed on the gas outlet end wall at intervals.

In order to further avoid the influence of the blast air flow on the natural injection, preferably, a gap exists between the gas outlet of the gas channel and the gas inlet of the injection pipe in the gas flow direction. During air blowing, the peripheral area of the fuel gas outlet can naturally inject the outside air; when the blast stops, the natural air can be injected by the gas ejected from the gas outlet, and at the moment, the small fire work of the gas stove can be realized.

To further solve the second technical problem, it is preferable that the two gas outlets of the gas channel are distributed on both sides of the air outlet of the blast air channel. In this way, the gas blown from both sides can be mixed well with the blast air in the center.

Preferably, the air outlet of the air blowing passage is formed in a bar shape extending up and down. So, the air outlet that extends from top to bottom cooperates with the gas outlet that is located both sides, when can improve blast air and gas misce bene, can also further improve the gas and draw the ability of penetrating natural air.

In order to enable the blast air flow to be smoothly discharged, it is preferable that the blast air passage extends in the first axial direction described above. In this way, the blast air flow can flow along the blast air channel and be discharged from the air outlet, avoiding the influence of the diversion on the fluid.

Further preferably, along the gas flowing direction, the gas channel has a gas inlet section, a buffer section and at least two gas outlet sections which are sequentially communicated, the gas inlet section extends along the direction intersecting with the first axial direction, a port of the gas inlet section is a gas inlet of the gas channel, the gas outlet section extends along the first axial direction and is arranged along the first circumferential direction at intervals, and a port of each gas outlet section is a gas outlet. Therefore, the gas inlet and the air inlet are not positioned on the same side of the air inlet seat, so that the gas source can be conveniently input and the air blowing device can be conveniently installed; meanwhile, the arrangement of the gas inlet section, the buffer section and the gas outlet section can ensure that the gas is smoothly and stably output from a gas outlet, and the risk of gas turbulence is reduced.

In order to enable the gas channel and the blast air channel in the air inlet seat to work well, preferably, the air inlet seat is internally provided with an upper cavity and a lower cavity which are arranged above and below and extend along a first axial direction, the upper cavity and the lower cavity are separated by a middle baffle, an air outlet of the blast air channel is in a strip shape extending in the up-down direction, the upper end part and the lower end part of the air outlet are respectively opposite to and communicated with the upper cavity and the lower cavity, and the upper cavity and the lower cavity jointly form the blast air channel;

the middle baffle is provided with hollow parts which are used as a buffer section and an air outlet section of the gas channel, and the extension direction of the buffer section is consistent with that of the air inlet section of the gas channel.

So, middle baffle can be used for taking shape out the buffer segment of gas passageway and the section of giving vent to anger, can separate the inner space of seat of admitting air again for gas passageway and blast air passageway mutually noninterfere, both can work better, so that the air current can smoothly flow through in the passageway that makes the correspondence. And the structure is more compact.

Meanwhile, the blast air flow can fully contact the upper surface and the lower surface of the middle baffle before entering the injection pipe, so that the temperature of the fuel gas in the buffer section and the gas outlet section of the fuel gas channel is reduced, and the floating of the fuel gas is reduced.

To further solve the second technical problem, it is also preferable that the gas outlets are at least three and are spaced apart along the first circumferential direction. Thereby can promote the volume of drawing of natural air and simultaneously, can also improve the homogeneity of mixing of gas and blast air and natural air.

Preferably, the air outlet is circular, and the gas outlets are arranged at the periphery of the air outlet at equal intervals.

In order to enable a smooth discharge of the blast air flow, it is preferred that the blast air channel extends in the first axial direction mentioned above. In this way, the blast air flow can flow along the blast air channel and be discharged from the air outlet, avoiding the influence of the diversion on the fluid.

Further preferably, along the gas flowing direction, the gas channel is provided with a gas inlet section, a buffer section and a plurality of gas outlet sections which are sequentially communicated, the gas inlet section extends along the direction crossed with the first axial direction, the port of the gas inlet section is a gas inlet of the gas channel, the gas outlet section extends along the first axial direction and is arranged at the periphery of the blast air channel at intervals along the first circumferential direction, and the port of the gas outlet section is the gas outlet; the buffer section is used for the local penetration of the air blowing air channel. Therefore, the gas inlet and the air inlet are not positioned on the same side of the gas inlet seat, so that the input of a gas source and the installation of the air blowing device are facilitated; meanwhile, the arrangement of the gas inlet section, the buffer section and the gas outlet section can ensure that the gas is smoothly and stably output from a gas outlet, and the risk of gas turbulence is reduced.

To further solve the second technical problem, it is preferable that the air inlet seat has a peripheral blowing passage, a blowing inlet of the peripheral blowing passage is used for being in fluid communication with a blowing gas source, at least three blowing outlets of the peripheral blowing passage are arranged at intervals along the first circumferential direction, and at least one blowing outlet is respectively arranged on both sides of each gas outlet. The design of a plurality of blast outlets can guarantee that the blast volume is balanced, and the interval arrangement mode between blast outlet and the gas outlet can: 1. the part of the peripheral area of the fuel gas outlet, which is not provided with the air outlet, can be naturally injected with outside air, so that the influence of the arrangement of the blast air outlet on the natural injection is avoided; 2. the gas and blast air mixing is facilitated, and the mixing uniformity between the gas and the blast air is improved.

The technical scheme adopted by the invention for solving the third technical problem is as follows: the utility model provides an draw and penetrate system that draws of subassembly which has as above which characterized in that: the air blowing device is used as an air blowing source, and the air outlet end of the air blowing device is in fluid communication with the air inlet of the air blowing channel of the air inlet seat.

The technical scheme adopted by the invention for solving the fourth technical problem is as follows: a gas cooking appliance with the injection system is provided.

Compared with the prior art, the invention has the advantages that: the air outlet of the blast air channel is opposite to the central area of the air inlet, and the gas outlets of the gas channel are at least two and are opposite to the peripheral area of the air inlet and are arranged at intervals along the first circumference, so that the gas sprayed from the gas outlets can better inject the outside natural air without being influenced by the airflow discharged from the air outlet; the air outlet of the blast air channel points to the central area of the air inlet, so that the negative pressure of the central area can be increased, and the natural injection effect is further improved; and the mixing effect of air and gas is promoted.

Drawings

Fig. 1 is a schematic structural view of an injection assembly according to an embodiment of the present invention;

FIG. 2 is a longitudinal cross-sectional view of FIG. 1;

fig. 3 is a schematic partial structural view of an injection assembly according to a first embodiment of the present invention (without an injection pipe);

fig. 4 is a partial structural schematic view of the injection assembly according to another view angle in the first embodiment of the present invention (the injection pipe is omitted);

FIG. 5 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 7 is a schematic structural view of a gas range according to a first embodiment of the present invention;

fig. 8 is a schematic partial structural view of an injection assembly in the second embodiment of the present invention (without an injection pipe);

FIG. 9 is a longitudinal cross-sectional view (taken in cross-section along a first axially extending plane) of FIG. 8;

FIG. 10 is a transverse cross-sectional view of FIG. 8 (the cross-section being a vertical plane extending perpendicular to the first axial direction);

fig. 11 is a schematic partial structural view of an injection assembly in the third embodiment of the present invention (an injection pipe is omitted).

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

The first embodiment is as follows:

as shown in fig. 1 to 7, in a first preferred embodiment of the injection assembly, the injection system and the gas cooker of the burner of the present invention, the injection assembly includes an injection pipe 1 and an air inlet seat 4.

The injection pipe 1 is basically horizontally arranged and provided with an air inlet 10, the air inlet 10 is provided with a central area 11 and a peripheral area 12 positioned around the central area 11, the length direction of the injection pipe 1 is a first axial direction, and the direction around the first axial direction is a first circumferential direction.

Along the flowing direction of the fuel gas, the air inlet seat 4 is positioned at the upstream of the air inlet 10 of the injection pipe 1. The air inlet seat 4 is formed with a gas passage 41, a blast air passage 42 and an air outlet end wall 400 opposite to the air inlet 10 of the injection pipe 1, which are isolated from each other.

In this embodiment, the air inlet seat 4 has an upper cavity 4a and a lower cavity 4b arranged one above the other and extending along the first axial direction, which are separated by an intermediate baffle 44, the air outlet 42b of the air blowing air channel 42 is in a strip shape extending in the up-down direction, and the upper end and the lower end of the air outlet 42b respectively penetrate through the air outlet end wall 400 and are opposite to and communicated with the upper cavity 4a and the lower cavity 4b, at this time, the upper cavity 4a and the lower cavity 4b jointly form the air blowing air channel 42, and the air outlet 42b of the air blowing air channel 42 is opposite to the central area 11 of the air inlet 10; the air inlet 42b of the blast air channel 42 is adapted to be in fluid communication with a blast air source and is located on the end wall of the inlet seat 4 opposite the outlet end wall 400.

Along the gas flowing direction, the gas channel 41 has a gas inlet section 411, a buffer section 412 and two gas outlet sections 413 which are sequentially communicated, the gas inlet section 411 extends along the direction perpendicular to the first axial direction, and the port of the gas inlet section 411 is the gas inlet 41a of the gas channel 41 and is used for being in fluid communication with a gas source. The air outlet segments 413 extend in the first axial direction and are spaced apart in the first circumferential direction, and the port of each air outlet segment 413 is used as the gas outlet 41b of the gas channel 41, penetrates through the air outlet end wall 400, is opposite to the surrounding area 12 of the air inlet 10, and is located on both sides of the air outlet 42b of the blast air channel 42. In this embodiment, the intermediate baffle 44 is formed with hollow portions serving as a buffer section 412 and an outlet section 413 of the gas passage 41, and the extending direction of the buffer section 412 coincides with the extending direction of the inlet section 411 of the gas passage 41. In the gas flow direction, a gap 40 exists between the gas outlet 41b of the gas passage 41 and the gas inlet 10 of the injection pipe 1. Thus, the gas ejected from the gas outlet 41b can better eject the external natural air without being influenced by the air flow discharged from the air outlet 42 b; and because the air outlet 42b points to the central area 11 of the air inlet 10, the negative pressure of the central area 11 can be increased, thereby further improving the natural injection effect.

As shown in fig. 7, the ejector system of this embodiment includes the above-mentioned ejector assembly and the air blowing device 5 as the air blowing source, and the air outlet end of the air blowing device 5 is in fluid communication with the air inlet 42a of the air blowing air passage 42 of the air inlet seat 4. In this way, the air flow output from the air blowing device 5 can pass through the air blowing passage 42 and then flow out from the air outlet 42 b. The air blowing device 5 may adopt an existing air blower, and controls whether the air outlet 42b has the airflow flowing out by controlling the start-up or the stop of the air blower, specifically: during blowing, the peripheral area of the fuel gas outlet 41b can be naturally injected with outside air; when the blast stops, the natural air can be injected by the gas ejected from the gas outlet 41b, and at the moment, the small fire operation of the gas stove can be realized. Meanwhile, the flow rate of the air flow flowing out of the air outlet 42b can be controlled by controlling the operation power of the air blowing device 5.

As shown in fig. 7, the gas cooker of the present embodiment includes a burner, which is a conventional burner, in addition to the above-mentioned injection system, and is communicated with the air outlet of the injection pipe 1.

Example two:

referring to fig. 8 to 10, a second preferred embodiment of the injection assembly, the injection system and the gas cooker of the burner of the present invention is substantially the same as the first embodiment, except that in this embodiment, three air outlets 42b are circular, and three gas outlets 41b are arranged at equal intervals along the first circumferential direction at the periphery of the air outlets 42 b. And in this embodiment the blast air channel 42 is a strip channel extending in the first axial direction. Along the gas flowing direction, the gas channel 41 is provided with an air inlet section 411, a buffer section 412 and three air outlet sections 413 which are sequentially communicated, the air inlet section 411 extends along the direction vertical to the first axial direction, the port of the air inlet section 411 is a gas inlet 41a of the gas channel 41, the air outlet sections 413 extend along the first axial direction and are arranged on the periphery of the blast air channel 42 at equal intervals along the first circumferential direction, and the port of each air outlet section 413 is a gas outlet 41b of the gas channel 41; the buffer section 412 is provided for partial penetration of the blast air passage 42.

Example three:

as shown in fig. 11, a third preferred embodiment of the injection assembly, the injection system and the gas cooker of the present invention is substantially the same as the second preferred embodiment, except that in this embodiment, the air inlet seat 4 is further formed with three peripheral air blowing passages 43, air blowing inlets of which are used for being in fluid communication with an air blowing source, air blowing outlets 43b of which are arranged at intervals along the first circumferential direction, and two sides of each air blowing outlet 43b are respectively provided with one gas outlet 41b. Namely, the gas outlet 41b and the air outlet 42b are arranged at intervals in sequence: in particular one gas outlet 41b, one blast outlet 43b, one further gas outlet 41b, one further blast outlet 43b and so on.

Therefore, the air blast outlets and the fuel gas outlets are arranged at intervals, so that the part, which is not provided with the air blast outlet 43b, in the peripheral area of the fuel gas outlets can be naturally injected with the outside air; meanwhile, the plurality of air blowing outlets 43b can ensure balanced air blowing amount, so that mixing between gas and air blowing is facilitated, and mixing uniformity between gas and air blowing is improved.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion or/and be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, e.g., a pipe, a channel, a conduit, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.

Claims (16)

1. An injection assembly for a burner comprising:

the injection pipe (1) is provided with an air inlet (10), the air inlet (10) is provided with a central area (11) and a peripheral area (12) positioned around the central area (11), the length direction of the injection pipe (1) is recorded as a first axial direction, and the direction around the first axial direction is a first circumferential direction;

an air inlet seat (4) having a gas passage (41) and a blast air passage (42), wherein a gas inlet (41 a) of the gas passage (41) is adapted to be in fluid communication with a gas source and an air inlet (42 a) of the blast air passage (42) is adapted to be in fluid communication with a blast gas source;

along the flowing direction of fuel gas, the air inlet seat (4) is positioned at the upstream of an air inlet (10) of the injection pipe (1);

the method is characterized in that:

the air outlet (42 b) of the air blast passage (42) is opposed to the central region (11) of the air inlet (10);

at least two gas outlets (41 b) of the gas channel (41) are opposite to the surrounding area (12) of the gas inlet (10) and are arranged at intervals along the first circumference.

2. The eductor assembly of claim 1, wherein: the gas channel (41) and the air blowing channel (42) are isolated from each other.

3. The eductor assembly of claim 1, wherein: the air inlet seat (4) is formed with a gas channel (41), an air blowing air channel (42) and an air outlet end wall (400) opposite to the air inlet (10) of the injection pipe (1), and a gas outlet (41 b) of the gas channel (41) and an air outlet (42 b) of the air blowing air channel (42) penetrate through the air outlet end wall (400).

4. The eductor assembly of claim 3, wherein: in the gas flow direction, a gap (40) is formed between a gas outlet (41 b) of the gas passage (41) and the gas inlet (10) of the injection pipe (1).

5. The eductor assembly of claim 1, wherein: two gas outlets (41 b) of the gas channel (41) are distributed on both sides of an air outlet (42 b) of the blast air channel (42).

6. The eductor assembly of claim 5, wherein: the air outlet (42 b) of the air blowing passage (42) is in the shape of a strip extending up and down.

7. The eductor assembly of claim 5, wherein: the blast air channel (42) extends in the first axial direction.

8. The eductor assembly of claim 7, wherein: along the gas flow direction, the gas channel (41) is provided with a gas inlet section (411), a buffer section (412) and at least two gas outlet sections (413) which are sequentially communicated, the gas inlet section (411) extends along the direction crossed with the first axial direction, the port of the gas inlet section (411) is a gas inlet (41 a) of the gas channel (41), the gas outlet sections (413) extend along the first axial direction and are arranged along the first circumferential direction at intervals, and the port of each gas outlet section (413) is a gas outlet (41 b).

9. The eductor assembly of claim 8, wherein: the air inlet seat (4) is internally provided with an upper cavity (4 a) and a lower cavity (4 b) which are arranged up and down and extend along a first axial direction, the upper cavity and the lower cavity are separated by a middle baffle plate (44), an air outlet (42 b) of the air blowing channel (42) is in a strip shape extending up and down, the upper end part and the lower end part of the air outlet (42 b) are respectively opposite to and communicated with the upper cavity (4 a) and the lower cavity (4 b), and the upper cavity (4 a) and the lower cavity (4 b) jointly form the air blowing channel (42);

the intermediate baffle plate (44) is formed with hollow portions serving as a buffer section (412) and an air outlet section (413) of the gas passage (41), and the extension direction of the buffer section (412) is identical to the extension direction of an air inlet section (411) of the gas passage (41).

10. The eductor assembly of claim 1, wherein: the gas outlets (41 b) are at least three and are arranged at intervals along the first circumferential direction.

11. The eductor assembly of claim 10, wherein: the air outlets (42 b) are circular, and the gas outlets (41 b) are arranged on the periphery of the air outlets (42 b) at equal intervals.

12. The eductor assembly of claim 10, wherein: the blast air channel (42) extends in the first axial direction.

13. The eductor assembly of claim 12, wherein: along the gas flowing direction, the gas channel (41) is provided with a gas inlet section (411), a buffer section (412) and a plurality of gas outlet sections (413) which are communicated in sequence, the gas inlet section (411) extends along the direction crossed with the first axial direction, the port of the gas inlet section (411) is a gas inlet (41 a) of the gas channel (41), the gas outlet sections (413) extend along the first axial direction and are arranged on the periphery of the blast air channel (42) at intervals along the first circumferential direction, and the port of each gas outlet section (413) is a gas outlet; the buffer section (412) is used for the local penetration of the blast air channel (42).

14. The eductor assembly of claim 11 wherein: the air inlet seat (4) is also provided with a peripheral blast channel (43), a blast inlet of the peripheral blast channel is used for being communicated with a blast air source in a fluid mode, at least three blast outlets (43 b) are arranged at intervals along the first peripheral direction, and at least one blast outlet (43 b) is arranged on two sides of each fuel gas outlet (41 b).

15. An ejector system having an ejector assembly according to any one of claims 1 to 14, wherein: the air blowing device (5) is used as an air blowing source, and the air outlet end of the air blowing device (5) is in fluid communication with the air inlet (42 a) of the air blowing air channel (42) of the air inlet seat (4).

16. A gas cooker having the injection system of claim 15.

Images