CN115899687A - Burner injection system and gas stove with same - Google Patents

Abstract

The invention relates to a burner injection system and a gas cooker applying the injection system, wherein the burner injection system comprises: the gas inlet seat is internally provided with a gas outlet channel and a blast channel; a blowing device for blowing air into the blowing passage; an air inlet cavity which is respectively communicated with the air blowing device and the air blowing channel in a fluid mode is formed in the air inlet seat, and the air inlet cavity is located on the upstream of the air blowing channel along the flowing direction of air; the gas inlet seat is also internally provided with a separating rib for separating the gas inlet cavity, a gas inlet channel is formed in the separating rib, and the gas inlet channel is respectively communicated with the gas outlet channel and an external gas source fluid. Compared with the prior art, the invention has the advantages that: the gas inlet channel can be formed by the separating ribs, and the gas inlet cavity can be separated, so that air blown into the air blowing device is guided and rectified, and the gas in the gas inlet channel can be cooled.

Description

Burner injection system and gas stove with same

Technical Field

The invention relates to the technical field of household kitchenware, in particular to a burner injection system and a gas cooker applying the injection system.

Background

At present, most gas cookers on the market adopt an atmospheric mixed combustion mode, and in the combustion process, in order to ensure the combustion stability and prevent backfire, the gas is firstly mixed with air (primary air) to form premixed gas. However, the traditional gas and air mixing mode still has the defects of insufficient mixing, insufficient combustion, low heat efficiency, more smoke emission and the like during combustion.

For this reason, some existing burners supplement the shortage of natural injection air to the full extent by arranging an air blower, for example, a blast type burner disclosed in chinese patent application with application number 202011232358.9 (publication number CN 112283705A), includes a burner main body, the burner main body includes a burner head, an inner ring injection pipe and an outer ring injection pipe, one end of the outer ring injection pipe far away from the burner head is provided with an air blowing device, the air blowing device includes a housing, and the housing is provided with a through air blowing channel; the burner is characterized by further comprising an air inlet cover arranged on the burner body, the air inlet cover is provided with a mounting platform, the mounting platform is provided with an air inlet, the air inlet is matched with the blast channel, the inner ring injection pipe is provided with an inner ring nozzle, and the outer ring injection pipe is provided with an outer ring nozzle.

The combustor combines the scheme of naturally injecting and supplementing primary air by blowing, and can fully play a certain promoting role in combustion, but the gas nozzle is not organically combined with the air inlet cover, the overall structure is not compact, the combustor cannot adapt to the limited installation space in a stove, and air blown into the air inlet cover by the blowing device cannot be effectively guided to flow out of the air outlet, turbulence is easily formed in the air inlet cover, and the air supplementing efficiency is reduced, so that the combustor is still to be further improved.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a burner injection system, which can make the overall structure compact and facilitate diversion and rectification of blast air flow, in view of the above-mentioned deficiencies in the prior art.

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

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

the gas inlet seat is internally provided with a gas outlet channel and a blast channel;

a blowing device for blowing air into the blowing passage;

the method is characterized in that:

an air inlet cavity which is respectively communicated with the air blowing device and the air blowing channel in a fluid mode is formed in the air inlet seat, and the air inlet cavity is located at the upstream of the air blowing channel along the flowing direction of air;

the gas inlet seat is also internally provided with a separation rib for separating the gas inlet cavity, a gas inlet channel is formed in the separation rib, and the gas inlet channel is respectively communicated with a gas outlet channel and an external gas source fluid.

By arranging the separation ribs, the separation ribs are used for forming a gas inlet channel, so that air blown by the air blowing device is fully contacted with the surfaces of the separation ribs, the gas in the gas inlet channel is cooled, and the floating of the gas is reduced; the air inlet cavity can be divided, so that the air blown by the air blowing device is accelerated.

Preferably, the air blast passageway includes the sub-air blast passageway of two at least different flow, the separation muscle will the air inlet chamber is separated into two at least subcavities, and every subcavity corresponds at least one sub-air blast passageway respectively, can lead to and the rectification to the air that the air-blast device bloated from this, avoids producing the turbulent flow, reduces and draws the effect.

Furthermore, the gas inlet channel and the gas outlet channel extend transversely and are perpendicular to each other, and the gas outlet channel and the blast channel extend in the same direction; the gas outlet channel is towards the gas inflow inlet, the air blowing device comprises an air blower, the air blower is provided with an air outlet, and the air outlet is towards the gas inflow inlet of the gas outlet channel, so that the air outlet direction of the air blower is consistent with the extending direction of the gas outlet channel. From this can make the air inlet seat compact structure, integrate the degree height, the air inlet seat need not extra trompil and supplies the gas pipe to pass through, and the leakproofness is good.

Further, in order to facilitate fluid communication between the air blower and the air inlet cavity, the air blowing device further comprises a hollow shell which is communicated with the air inlet cavity in a fluid mode, the shell is arranged between the air inlet seat and the air blower, an air outlet cavity is formed in the shell, and an air outlet of the air blower is arranged on one side, far away from the air inlet cavity, of the shell and is communicated with the air outlet cavity in a fluid mode.

Furthermore, the air blowing channel comprises at least two sub air blowing channels with different flow rates, and the air outlet is opposite to the sub air blowing channel with the larger flow rate, so that the requirements of different air volumes can be met.

Further, in order to make the pressure of the air outlet cavity uniform, the volume of the air outlet cavity in the outer shell is gradually reduced from the side corresponding to the sub-blowing channel with the larger flow to the side corresponding to the sub-blowing channel with the smaller flow.

Further, in order to guide the air flow to turn to enter the sub-blowing channel with the smaller flow, the inner side wall surface of the side, connected with the air outlet of the air blower, of the shell forms a flow guide surface, and the flow guide surface is gradually inclined close to the air inlet cavity from the position connected with the air outlet of the air blower to the position corresponding to the sub-blowing channel with the smaller flow.

For avoiding the gas come-up and the air come-up bring draw the inhomogeneous of penetrating the air, separate the muscle and be transverse arrangement and separate into the subchamber that the upper and lower was arranged with the air inlet chamber, sub-blast air channel has at least two, and every sub-blast air channel has air outlet for air outlet has at least two, gas outlet channel has gas outlet, the top and the below of gas outlet are provided with at least one air outlet respectively.

In order to further avoid the unevenness of air injection caused by gas floating and air floating, the flow area of the air flow outlet positioned above the gas flow outlet is not less than the flow area of the air flow outlet positioned below the gas flow outlet.

In order to better guide air to enter the sub-blowing channels from the air inlet cavity, the air inlet cavity is further provided with a partition part used for guiding the air in the air inlet cavity to the sub-blowing channels, and the partition part is located between the sub-blowing channels with different flow rates, so that the partition part can also play a role in partitioning the cavities corresponding to the inner and outer ring ejector pipes.

The technical scheme adopted by the invention for solving the second technical problem is as follows: a gas cooking appliance is characterized in that: the burner injection system described above is applied.

Compared with the prior art, the invention has the advantages that: through setting up the separation muscle for separate the muscle and both be used for constituting gas inlet channel, can separate the chamber of admitting air again, thereby lead and the rectification to the air that the air-blast device bloated, and can be before the air flows into the air-blast passageway by the chamber of admitting air, fully contact the surface of separation muscle, cool down the gas in the gas inlet channel, reduce the gas come-up.

Drawings

FIG. 1 is a schematic structural diagram of a burner injection system according to an embodiment of the invention;

FIG. 2 is a schematic view of a concealed ejector tube and blower of a burner ejector system in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view (different from FIG. 2) of a hidden blower of a burner injection system according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view (vertical section) of a hidden blower of a burner injection system of an embodiment of the present invention;

FIG. 5 is a cross-sectional view (horizontal section) of a burner injection system according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view (horizontal, parallel to the cross-section of FIG. 5) of a burner ejector system according to an embodiment of the invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration only and are not to be construed as limiting, for example, "upper" and "lower" are not necessarily limited to directions opposite or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 to 6, the preferred embodiment of the invention is shown. The burner injection system of the embodiment comprises an air inlet seat 1 and a blowing device 3, wherein the blowing device 3 blows air into the air inlet seat 1 and then replenishes the air into an injection pipe (not shown in the attached drawings, which is in the prior art). The burner injection system can be applied to a gas cooker, and the gas cooker can also comprise a burner.

A gas outlet channel 11 and an air blast channel are formed in the gas inlet seat 1, the gas outlet channel 11 is provided with a gas flow inlet 111 and a gas flow outlet 112, wherein the gas flow inlet 111 is used for being communicated with a gas source in a fluid mode, and the gas flow outlet 112 is used for injecting gas to the injection pipe.

The existing burner fire cover generally comprises an inner ring fire cover and an outer ring fire cover, so that the mode of combining the outer ring flame with the inner ring flame is formed by heating the pot body, and accordingly, the two ejector pipes in the embodiment correspond to one outer ring and one inner ring (the corresponding relationship between the ejector pipe and the fire cover is the prior art, namely the large ejector pipe and the small ejector pipe in the background art), wherein the flow rate of one ejector pipe is larger than that of the other ejector pipe. Therefore, the gas outlet channels 11 in this embodiment have two sets, and alternatively, there may be three or more sets, as long as at least two gas outlet channels 11 are ensured, and one of the gas outlet channels 11 has a flow rate greater than that of the other gas outlet channels 11, as shown in fig. 2, the left set of gas outlet ports 112 (two) corresponds to the ejector pipe of the outer ring, and the right set of gas outlet ports 112 (one set) corresponds to the ejector pipe of the inner ring.

Correspondingly, the air blowing channel comprises at least two sub air blowing channels 12, each injection pipe corresponds to a gas outlet channel 11 and at least one sub air blowing channel 12, and in the embodiment, each injection pipe corresponds to two sub air blowing channels 12.

The sub-blowing duct 12 has an air inlet 121 and an air outlet 122, wherein the air inlet 121 is in fluid communication with the blowing device 3, air is blown into the sub-blowing duct 12 from the air inlet 121 by the blowing device 3, and the air outlet 122 is used for supplementing air to the ejector pipe. In this embodiment, the gas outlet channel 11 and the sub-blowing channels 12 extend in the same direction, and may be parallel to each other or form a certain angle therebetween. The gas flow inlet 111 and the gas flow outlet 112 are formed at opposite ends of the gas outlet passage 11, respectively, and the air flow inlet 121 and the air flow outlet 122 are formed at opposite ends of the sub-blowing passage 12, respectively. The gas outlet 112 can be realized by opening the gas outlet channel 11, or by providing a nozzle at the end of the gas outlet channel 11.

The air inlet seat 1 is further formed with an air inlet cavity 13 opened toward one side of the blowing device 3, the air inlet cavity 13 is located upstream of the sub-blowing passage 12 in the flow direction of the air blown by the blowing device 3, and the air inlet port 121 is opened in the wall surface of the air inlet cavity 13 at the most downstream side of the air inlet seat 1.

The air inlet seat 1 may be a single component formed with the gas outlet channel 11, the sub-blowing channels and the air inlet cavity 13, or may be an assembly formed by arranging and limiting the independent gas outlet channel 11, the sub-blowing channels and the air inlet cavity 13. The gas outlet channel 11 and each sub-blast channel are isolated from each other.

The air inlet seat 1 is further provided with a partition rib 14, a gas inlet channel 141 is formed in the partition rib 14, and one end of the gas inlet channel 141 facing the outside of the air inlet seat 1 is used for fluid communication with an external gas source (generally, connected with a gas supply pipeline). Similarly, the partition rib 14 may be a single component formed with the gas inlet passage 141, or may be an assembly formed by mounting and retaining the separate gas inlet passages 141.

Through setting up the partition muscle 14 for air inlet cavity 13 is separated into two at least independent sub-cavitys 131, separates air inlet cavity 13 for less cavity from this, and the area of overflowing of every sub-cavity 131 is less, can separate the air that air-blowing device 3 introduced into air inlet cavity 13 and flow to low reaches from different sub-cavities 131 from this, and then play the effect of accelerated air. In the present embodiment, it is preferable that each of the sub-cavities 131 corresponds to one sub-blowing channel (air flow inlet 121). Accordingly, the partition ribs 14 are used to partition the air intake chamber 13 to guide and rectify the air blown by the air blowing device 3, and the flow direction of the air blown by the air blowing device 3 is staggered with respect to the air intake chamber 141 (in a preferred embodiment, a substantially vertical form is used hereinafter), so that the air can sufficiently contact the surfaces of the partition ribs 14 to cool the gas in the air intake chamber 141 before the air flows from the air intake chamber 13 into the sub-air blowing chamber 12. Alternatively, it is also possible that a part of sub-cavities 131 corresponds to at least one sub-blowing channel 12, and a part of sub-cavities 131 does not have a corresponding sub-blowing channel 12.

Because the heat that its head produced when the combustor worked is to combustor body and peripheral parts transmission, air near the periphery is progressively heated, and it is more obvious to be close to the combustor temperature more and increase, when forming high temperature, the gas that is erupted by gas flow outlet 112 is heated rapidly, the volume increases fast, density reduces, buoyancy draws the influence of direction to the gas and can not ignore, the orbit line of gas injection has certain tilt up, make gas flow outlet 112 center place air below the horizontal plane draw the jet volume increase (draw the space that air got into naturally), and the air that gas flow outlet 112 center place plane top draws the jet volume then reduces (draw the space that air got into naturally and reduce); in addition, the naturally-ejected ambient air also has a tendency of rising upward when heated rapidly, further resulting in a reduction in air above the plane of the center of the gas outlet 112. Therefore, the mixed gas ejected from the gas flow outlet 112 and the mixed gas ejected from the outside air into the ejection pipe are naturally ejected, and the state that the gas flow above the plane where the center of the gas flow outlet 112 is located is smaller than the gas flow below the plane where the center of the gas flow outlet 112 is located is existed, so that the uneven mixing, the ejection efficiency reduction and even the insufficient combustion can be caused. The temperature reduction function of the separating ribs 14 can reduce the unevenness caused by the floating of the fuel gas.

In the present embodiment, the partitioning rib 14 is transversely arranged, especially horizontally arranged (orientation in the installation state), thereby partitioning the gas inlet cavity 13 into an upper sub-cavity 131 and a lower sub-cavity 131, the gas inlet channel 141 is arranged at an angle to the gas outlet channel 11, and preferably, the gas inlet channel 141 and the gas outlet channel 11 both extend horizontally and are perpendicular to each other. The gas outlet channel 11 and the sub-blowing channel 12 extend in the same direction, and may be parallel to each other or form an angle therebetween.

In order to solve the problems of floating up of gas and floating up of air, the air flow outlets 122 have at least two, and at least one air flow outlet 122 is respectively provided above and below the gas flow outlet 112 (where the upper and lower directions refer to the orientation in the installation state), and as in the present embodiment, the air flow outlets 122 have two and are distributed up and down with respect to the gas flow outlet 112. The air outlets 122 are arranged above and below the gas outlets 112 at intervals, and corresponding parameters are adjusted on the flow area and the air outlet angle, so that the gas flowing out of the gas outlets 112 and the air flowing out of the air outlets 122 are uniform, and the injection amount is balanced.

To further reduce the influence of the floating of the gas and the air, so that the injection is uniform, the flow area of the air outlet 122 located above the gas outlet 112 is not smaller than the flow area of the air outlet 122 located below the gas outlet 112, and it is preferable that the ratio of the flow area of the air outlet 122 located above the gas outlet 112 to the flow area of the air outlet 122 located below the gas outlet 112 is 1:1 to 2.27:1.

the flow area of the air inlet 121 of the sub-blowing passage 12 is larger than the flow area of the air outlet 122, and the flow area of the sub-blowing passage 12 gradually decreases from the air inlet 121 to the air outlet 122, so that the sub-blowing passage 12 can guide the air blown by the blowing device 3 and accelerate the blown air (the flow area gradually decreases from the inlet to the outlet, so that the sub-blowing passage 12 is in the shape of an accelerating passage), and the flow area of the air outlet 122 can be reduced, thereby further reducing the interference of natural induction of the outside air. Preferably, the ratio of the flow area of the air outlet 122 to the flow area of the air inlet 121 is 1:1.4 to 1:1.6.

because the installation space in the range is limited, the end surface area of the air inlet seat 1 provided with the gas flow outlet 112 and the air flow outlet 122 is small, and the air inlet port (not shown) of the ejector pipe is also small, so that the air flow outlet 122 can be far away from the gas flow outlet 112 as much as possible, the influence on natural ejection of the gas is reduced, and the air ejected by the air flow outlet 122 is prevented from directly impacting the edge of the air inlet port of the ejector pipe, therefore, the air flow direction ejected by the air flow outlet 122 preferably has a tendency of facing the horizontal plane (the horizontal plane in the state of horizontally installing the ejector system) where the center of the gas flow outlet 112 is located. As in the present embodiment, the air outlets 122 are disposed above and below, so that the air ejected from the air outlet 122 located above is inclined downward, and the air ejected from the air outlet 122 located below is inclined upward. In addition, the gas ejected from the gas outlet 122 can provide a certain kinetic energy to the air flow, thereby accelerating the air flow.

In order to guide the air to flow in the above-mentioned desired flow direction, the sub-blowing duct 12 located above the gas outlet duct 11 is such that the vertical distance between the highest point of the air inlet 121 and the horizontal plane of the center of the gas outlet 112 is greater than the vertical distance between the highest point of the air outlet 122 and the horizontal plane of the center of the gas outlet 112, and the sub-blowing duct 12 located below the gas outlet duct 11 is such that the vertical distance between the lowest point of the air inlet 121 and the horizontal plane of the center of the gas outlet 112 is greater than the vertical distance between the lowest point of the air outlet 122 and the horizontal plane of the center of the gas outlet 112.

In addition, in the present embodiment, the sub-blowing duct 12 located above the gas outlet duct 11 has a vertical distance between the lowest point of the air inlet 121 and the horizontal plane on which the center of the gas outlet 112 is located, which is smaller than a vertical distance between the lowest point of the air outlet 122 and the horizontal plane on which the center of the gas outlet 112 is located, and the inclination of the line between the two highest points is greater than the inclination of the line between the two lowest points. The sub-blowing duct 12 located below the gas outlet duct 11 has a vertical distance between the highest point of the air inflow port 121 and the horizontal plane of the center of the gas outflow port 112 smaller than a vertical distance between the highest point of the air outflow port 122 and the horizontal plane of the center of the gas outflow port 112, and an inclination of a line connecting the two lowest points is greater than an inclination of a line connecting the two highest points. So that the flow direction of the blast introduction air can be ensured.

Alternatively, the vertical distance between the lowest point of the air inlet 121 and the horizontal plane where the center of the gas outlet 112 is located in the sub-blowing channel 12 located above the gas outlet channel 11 may also be greater than or equal to the vertical distance between the lowest point of the air outlet 122 and the horizontal plane where the center of the gas outlet 112 is located; the vertical distance between the highest point of the air inlet 121 and the horizontal plane of the center of the gas outlet 112 of the sub-blowing duct 12 located below the gas outlet duct 11 may be greater than or equal to the vertical distance between the highest point of the air outlet 122 and the horizontal plane of the center of the gas outlet 112.

The air blowing device 3 comprises a housing 31 and a blower 32, the housing 31 is disposed between the air inlet seat 1 and the blower 32, is hollow, and is opened toward one side of the air inlet cavity 13, so that an air outlet cavity 311 is formed in the housing 31, and the blower 32 has an air outlet 321 which is in fluid communication with the air outlet cavity 311 of the housing 31. The air outlet 321 is disposed on the opposite side of the housing 31 from the opening of the air inlet cavity 13, so that the air outlet direction of the air blower 32 coincides with the extending direction of the sub-blowing channel 12 (the gas outlet channel 11, the air outlet 321 also faces the gas flow inlet 111 of the gas outlet channel 11), so that the attenuation of the air speed is reduced as much as possible through the air outlet cavity 311, the air inlet cavity 13 and the sub-blowing channel 12 after the air is discharged by the air blower 32. For the gas supply, the nozzle and the position relation of the blast air inlet as described in the background art, the gas inlet seat 1 of the embodiment has a compact structure and high integration degree, the gas inlet seat 1 does not need to be additionally provided with holes for gas pipes to pass through, and the sealing performance is good.

The range of the ratio of the flow areas (cross-sectional areas through which gas or air passes) of the gas flow outlet 112 and the air flow outlet 122 corresponding to each ejector tube is different. Wherein, the ratio of the gas flow outlet 112 and the air flow outlet 122 (the cross-sectional area for gas or air to pass through) which are opposite to the injection pipe corresponding to the inner ring is 1: 2.5-1: 8.1, the range of the ratio of the flow areas of the gas flow outlet 112 and the air flow outlet 122 opposite to the ejector pipe corresponding to the outer ring is 1:30 to 1:40, under the condition that primary air supplemented by the air blowing device 3 is enough, the overflowing area is reduced as much as possible, so that the influence on natural injection of outside air is further reduced, the air quantity and the air speed of the primary air supplemented by the air blowing device 3 are ensured, and the phenomenon that the mixture is uneven after the mixture is mixed with the fuel gas ejected from the fuel gas outlet 112 is avoided.

Because the outer ring injection pipe with large flow has large air volume required for blowing correspondingly, and the inner ring injection pipe with small flow has small air volume required for blowing correspondingly, the inner ring flame of the burner is prevented from being blown off due to the overlarge air volume, therefore, the air outlet 321 of the air blower 32 is close to one side of the sub-blowing channel 12 with large flow, and the air outlet 321 of the air blower 3 is opposite to the sub-cavity 131 corresponding to the sub-blowing channel 12 with large flow.

The volume of the outlet cavity 311 in the housing 31 is gradually reduced from the side corresponding to the sub-blowing channel 12 with the larger flow rate to the side corresponding to the sub-blowing channel 12 with the smaller flow rate (the farther the outlet 321 of the blower 32 is, the lower the pressure is), thereby ensuring the uniform pressure in the outlet cavity 311. Preferably, the inner side wall surface of the side of the outer casing 31 connected to the air outlet 321 of the blower 32 forms a flow guiding surface 312, and the flow guiding surface 312 is inclined from the connection position with the air outlet 321 of the blower 32 to the direction far away from the air outlet 321, that is, to the position corresponding to the sub-blowing channel 12 with a smaller flow rate, and gradually approaches the air inlet cavity 13. The inclined manner may be a straight surface or an arc surface as shown in the present embodiment, so that the air flow can be diverted and smoothly guided into the sub blowing channels 12 with a smaller flow.

The air intake chamber 13 is further provided with a dividing portion 15, the dividing portion 15 is located on the wall surface of each sub-chamber 131, as shown in fig. 3 of the present embodiment, the dividing portion 15 is located at the middle position of the upper and lower sub-chambers 131, and extends upward and downward respectively by the partition rib 14, and the dividing portion 15 is located between the sub-blowing passages 12 of different groups, and guides the airflow entering the air intake chamber 13 to the sub-blowing passages 12.

In the above embodiment, the partition ribs 14 are arranged laterally. Alternatively, the partition ribs 14 may be vertically arranged to partition the air intake cavity 13 left and right, at this time, the extending direction of the sub-blowing channels 12 is unchanged, the sub-blowing channels 12 with different flow rates are arranged up and down, and the partition 15 is still located between the sub-blowing channels 12 with different flow rates, so as to partition different cavities corresponding to the inner and outer ring ejector pipes.

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 (11)

1. A burner injection system comprising:

the gas inlet seat (1) is internally provided with a gas outlet channel (11) and a blast channel;

a blowing device (3) for blowing air into the blowing passage;

the method is characterized in that:

an air inlet cavity (13) which is respectively communicated with the air blowing device (3) and the air blowing channel in a fluid mode is further formed in the air inlet seat (1), and the air inlet cavity (13) is located on the upstream of the air blowing channel along the air flowing direction;

the gas inlet seat (1) is also internally provided with a separation rib (14) for separating the gas inlet cavity (13), a gas inlet channel (141) is formed in the separation rib (14), and the gas inlet channel (141) is respectively communicated with the gas outlet channel (11) and an external gas source.

2. The burner ejector system of claim 1, wherein: the air blowing channel comprises at least two sub air blowing channels (12) with different flow rates, the air inlet cavity (13) is divided into at least two sub cavities (131) by the separation ribs (14), and each sub cavity (131) corresponds to at least one sub air blowing channel (12) respectively.

3. The burner injection system of claim 1 wherein: the gas inlet channel (141) and the gas outlet channel (11) extend transversely and are perpendicular to each other, and the gas outlet channel (11) and the air blowing channel extend in the same direction; the gas outlet channel (11) faces towards a gas inlet (111), the air blowing device (3) comprises an air blower (32), the air blower (32) is provided with an air outlet (321), and the air outlet (321) faces towards the gas inlet (111) of the gas outlet channel (11), so that the air outlet direction of the air blower (32) is consistent with the extending direction of the gas outlet channel (11).

4. The burner injection system of claim 1 wherein: the air blowing device (3) comprises an air blower (32), the air blower (32) is provided with an air outlet (321), the air blowing device (3) further comprises a hollow shell (31) communicated with the air inlet cavity (13) in a fluid mode, the shell (31) is arranged between the air inlet seat (1) and the air blower (32), an air outlet cavity (311) is formed in the shell (31), and the air outlet (321) of the air blower (32) is arranged on one side, away from the air inlet cavity (13), of the shell (31) and is communicated with the air outlet cavity (311) in a fluid mode.

5. The burner injection system of claim 4 wherein: the air blowing channel comprises at least two sub air blowing channels (12) with different flow rates, and the air outlet (321) is opposite to the sub air blowing channel (12) with the larger flow rate.

6. The burner injection system of claim 5 wherein: the volume of the air outlet cavity (311) in the shell (31) is gradually reduced from one side corresponding to the sub-blowing channel (12) with larger flow to one side corresponding to the sub-blowing channel (12) with smaller flow.

7. The burner ejector system of claim 6, wherein: the inner side wall surface of one side, connected with the air outlet (321) of the air blower (32), of the shell (31) forms a flow guide surface (312), and the flow guide surface (312) is inclined towards a position corresponding to the sub-air blowing channel (12) with a smaller flow from the connection position of the air outlet (321) of the air blower (32) and is gradually close to the air inlet cavity (13).

8. The burner injection system of claim 2 wherein: the partitioning ribs (14) are transversely arranged to partition the air inlet cavity (13) into sub-cavities (131) which are arranged up and down, the number of the sub-blowing channels (12) is at least two, each sub-blowing channel (12) is provided with an air outlet (122), so that the number of the air outlets (122) is at least two, the gas outlet channel (11) is provided with a gas outlet (112), and at least one air outlet (122) is respectively arranged above and below the gas outlet (112).

9. The burner injection system of claim 8, wherein: the flow area of the air flow outlet (122) located above the gas flow outlet (112) is not smaller than the flow area of the air flow outlet (122) located below the gas flow outlet (112).

10. The burner injection system according to any one of claims 2 and 5 to 9, wherein: the air inlet cavity (13) is also internally provided with a dividing part (15) used for guiding air in the air inlet cavity (13) to the sub-blowing channels (12), and the dividing part (15) is positioned between the sub-blowing channels (12) with different flow rates.

11. A gas cooker characterized in that: use of a burner ejector system according to any of claims 1 to 10.

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