CN110966598B

CN110966598B - Burner for gas stove

Info

Publication number: CN110966598B
Application number: CN201811154269.XA
Authority: CN
Inventors: 程永超; 郑军妹
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2018-09-30
Filing date: 2018-09-30
Publication date: 2021-10-29
Anticipated expiration: 2038-09-30
Also published as: CN110966598A

Abstract

The invention relates to a burner for a gas stove, which is characterized in that: comprises a base, the base is provided with an injection pipe arranged at the bottom of the base and arranged above the base, a fire cover which forms a relatively independent air mixing chamber with the base, and a gas channel which is arranged at the bottom of the base and longitudinally penetrates through the central position of the base, the gas channel comprises a flow passage communicated with the gas mixing chamber and the injection pipe, compared with the prior art, the invention has the advantages that the traditional gas mixing chamber, the injection pipe and the base are integrated, meanwhile, the traditional inner ring fire cover and the traditional outer ring fire cover are also integrated, thereby the whole burner is miniaturized, in addition, the gas channel flow passage can replace the 'expansion section' of the existing injection pipe, meanwhile, the length of the injection pipe can be enhanced by the design of the flow passage, the injection capacity can be enhanced while the overall height of the combustor is reduced, so that good mixed gas and primary air effects are generated, and the combustor is integrally in a good combustion working condition.

Description

Burner for gas stove

Technical Field

The invention relates to the field of household gas cookers, in particular to a burner for a gas cooker.

Background

The primary air coefficient of the existing atmospheric stove burner is generally 0.4-0.7, the premixed air cannot reach the air amount required by complete combustion, and various factors are added, so that certain secondary air supplement is required, and in order to reduce the emission of CO, the secondary air supplement is required to be as sufficient as possible. At present, the mode that the cooking utensils combustor supplyed the air is diversified, generally has the side mode of admitting air and admitting air down, and the side air inlet mode is opened the side air intake at the lateral part of gas mixing chamber promptly, and the outside air carries out the secondary air through this side air intake and supplyes, and the air intake is opened down at the base seat promptly to the mode of admitting air down, and the air of cooking utensils below carries out the secondary air through this air intake down and supplyes. Although the side air intake mode has the advantages of small intake resistance and large intake air amount, the existing side air intake combustor still has the problems as follows: due to the injection effect of combustion hot air flow, secondary air is sucked by the inner fire cover and the outer fire cover through the air mixing chamber side air inlet, the heat load of an inner ring is small, the coefficient of primary air is higher than that of an outer ring, the sucked secondary air is always excessive, the secondary air sucked by a middle ring fire hole of the outer fire cover is insufficient, the secondary air is reasonably distributed, meanwhile, the inner ring and the outer ring are fully combusted, if a secondary air supplementing channel is too large, the sucked secondary air is large, the heat taken away by smoke exhaust is increased, and the heat efficiency is low; the secondary air supplement channel is too small, the secondary air supplement quantity is insufficient, incomplete fuel gas is inevitably caused, the smoke emission exceeds the standard, and the primary air supply quantity is required to be increased under the condition of insufficient secondary air so as to reduce the demand of the secondary air, so that the primary air coefficient is increased and the injection capacity is enhanced. Therefore, the invention provides an injection pipe, the inner cavity of which is sequentially provided with a horn section, a transition section and a tail port matched with a burner head of a burner along the direction from an inlet to an outlet, a throat is formed between the horn section and the transition section, and the cross section of a cavity surrounded by the horn section is formed by intersecting a plurality of circles or ellipses similar to the circles, although the invention can avoid the mutual interference between airflow strands at the initial stage of injection, increase the supply amount of primary air, promote the mutual mixing between the airflow strands entering the inner cavity of the injection pipe and the air, improve the coefficient of the primary air, increase the injection capability and improve the energy efficiency of the burner, the injection pipe and a base are not integrally arranged, so that the problems of large volume, high cost, more parts and complex structure of the integral burner are solved, in order to meet the requirements of users on the small size of the combustor, the good performance of the energy efficiency and the smoke emission of the gas stove, the combustor needs to be further improved.

Disclosure of Invention

The invention aims to solve the technical problem of providing a burner for a gas stove, which can effectively reduce the overall height of the burner and enhance the injection capability.

Another technical problem to be solved by the present invention is to provide a burner for a gas range, which has a good secondary air supplement effect, in view of the above-mentioned prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: this a combustor for gas-cooker, its characterized in that: comprises that

The base is provided with an injection pipe arranged at the bottom of the base;

the fire cover is arranged on the base, and a relatively independent air mixing chamber is formed between the fire cover and the base;

and the gas channel is arranged at the bottom of the base and longitudinally penetrates through the central position of the base, and comprises a flow channel communicated with the gas mixing chamber and the injection pipe.

In order to enable the burner base and the injection pipe, the first gas channel and the second gas channel to be integrally arranged and reduce the height of the whole base, the gas mixing chamber comprises a first gas mixing chamber positioned on the inner side and a second gas mixing chamber positioned on the outer side, the gas channel comprises a first partition plate, a second partition plate and a third partition plate which are arranged at intervals, the first partition plate is directly communicated with the injection pipe, a first gas channel communicated with the first gas mixing chamber is formed between the first partition plate and the second partition plate, a second gas channel communicated with the second gas mixing chamber is formed between the second partition plate and the third partition plate, and the second partition plate is provided with a through hole communicated with the first gas channel and the second gas channel.

For convenience of processing, the gas channel also comprises a cover plate capable of covering the first partition plate, the second partition plate and the third partition plate.

In order to make the gas mixture that flows from drawing penetrating the pipe and can enter into first gas mixture indoor more evenly, first gas passageway has two runners, including establish respectively draw penetrating the first runner and the second runner of pipe both sides, along the air current direction, from upper reaches to low reaches, the sectional area of first runner and second runner increases gradually. Meanwhile, the first flow passage and the second flow passage can also be used as an expansion section of the injection pipe to further mix fuel gas and primary air.

In order to enable the mixed gas flowing out of the injection pipe to enter the second gas mixing chamber more uniformly, the second gas channel is also provided with two flow channels which comprise a third flow channel and a fourth flow channel which are respectively arranged at two sides of the injection pipe, and the sectional areas of the third flow channel and the fourth flow channel are gradually increased from the upstream to the downstream along the airflow direction. Meanwhile, the third flow passage and the fourth flow passage can also be used as an expansion section of the injection pipe to further mix fuel gas and primary air.

In order to form central fire and peripheral fire on a fire cover of the burner, the fire cover comprises an annular body, a gas mixing chamber is formed between an annular top wall of the body and an inner annular wall and an outer annular wall which respectively extend downwards from the inner edge and the outer edge of the annular top wall in a vertical or inclined mode, and a vertical annular partition plate is arranged in the gas mixing chamber to divide the gas mixing chamber into a first gas mixing chamber located on the inner side and a second gas mixing chamber located on the outer side.

Furthermore, a relatively isolated air supplementary chamber is arranged in the second air mixing chamber, the air supplementary chamber is at least provided with an air inlet hole which is communicated with the outside air in a fluid mode, and at least provided with a first main fire hole which is communicated with the second air mixing chamber. The secondary air can be supplemented for the fire cover by the fire cover instead of the secondary air through the air mixing chamber of the burner, particularly the secondary air is supplemented for the inner ring, wherein the air mixing chamber of the fire cover is internally provided with the relatively isolated air supplementing chamber which is at least provided with an air inlet hole which is in fluid communication with the external air and at least provided with a first main fire hole which is communicated with the air mixing chamber, the secondary air enters the air mixing chamber through the air inlet hole and can be buffered to prevent the over-high air outlet speed of the first main fire hole to cause flame leaving, and meanwhile, the first main fire hole of the air supplementing chamber can emit fire, so that the fire emitting pressure of the main fire hole in the outer ring wall can be relieved; meanwhile, the thickness of the outer ring wall corresponding to the main fire hole in the outer ring wall can be reduced, so that the depth of the main fire hole in the outer ring wall can be correspondingly reduced, the stable flow of the main fire hole in the outer ring wall can be ensured, the flame of the first fire outlet hole is stable, and the material and the manufacturing cost are saved and are correspondingly reduced.

The air inlet hole can be formed in any wall surface of the air supplementing chamber, and only a connecting channel with the outside air is needed, preferably, the top wall of the air supplementing chamber can be mutually independent from the annular top wall of the fire cover, or the top wall of the air supplementing chamber can be one part of the annular top wall of the fire cover body, and the top wall is provided with the air inlet hole which is in fluid communication with the air supplementing chamber. The design mode can effectively increase the air inlet area of the air inlet hole of the air supplement chamber.

Further, the side walls of the air replenishment chamber have four: the second side wall and the third side wall are connected with the outer ring wall and the first side wall, and the first main fire hole is formed in the fourth side wall.

The first side wall is a part of the annular partition plate for less overall connection structure.

In order to supplement secondary air to the inner ring fire, a circle of convex ring extends upwards from the position of the annular top wall corresponding to the annular partition plate, and an air outlet hole communicated with the outside and the air supplement chamber is formed in the part of the convex ring corresponding to the first side wall.

In order to supplement secondary air to the inner fire holes of the inner ring wall more quickly, the inner ring wall is provided with inner fire holes communicated with the first air mixing chamber at intervals along the circumferential direction, and the air outlet holes face the inner fire holes and are gradually inclined upwards from outside to inside.

In order to stabilize the flame inner fire hole, a first groove is circumferentially formed in the inner ring wall below the inner fire hole, and the inner fire hole penetrates through the first groove.

Similarly, for stabilizing the flame main fire holes, second main fire holes communicated with the second gas mixing chamber are formed in the outer ring wall at intervals along the circumferential direction, second grooves are formed in the outer ring wall below the second main fire holes along the circumferential direction, and the main fire holes penetrate through the second grooves.

In order to supplement more secondary air for the fire cover and enable the fire cover to burn more fully, the injection pipe, the first fuel gas channel and the second fuel gas channel are integrally T-shaped at the bottom of the base, and an air supplement channel is formed between the injection pipe, the first fuel gas channel and the second fuel gas channel and the base.

In order to enable the ejector pipe to be matched with two or more first nozzles, the inner cavity of the ejector pipe is divided into a first contraction part and a first straight part connected with the first gas channel according to the change of the cross section along the airflow direction, the cross section of a cavity surrounded by the first contraction part is formed by intersecting at least two concentric circles or at least two ellipses similar to circles, and the first nozzles matched with the first ejector pipe are respectively arranged at the center of the circle or the center of the ellipse.

Compared with the prior art, the invention has the advantages that the traditional gas mixing chamber, the ejector pipe and the base are integrated, and the traditional inner ring fire cover and the traditional outer ring fire cover are also integrally designed, so that the whole burner is miniaturized, in addition, the gas channel flow passage can replace the expansion section of the traditional ejector pipe, the structure is more compact, meanwhile, the length of the ejector pipe can be enhanced by the design of the flow passage, the ejector capacity can be enhanced while the overall height of the burner is reduced, so that the good effect of mixing gas and primary air is generated, and the whole burner is in a good combustion working condition.

Drawings

FIG. 1 is a schematic view of a burner according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a base bottom according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a schematic view of an angle of the fire cover according to an embodiment of the present invention;

FIG. 5 is a schematic view of another angle of the fire cover according to the embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a fire lid in an embodiment of the invention.

Detailed Description

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

As shown in fig. 1 to 6, the burner for a gas stove includes a base 100, the base 100 has an ejector tube 200 disposed at the bottom of the base 100, a fire cover 1 disposed on the base 100 and forming a relatively independent gas mixing chamber 15 with the base 100, and a gas channel 300 disposed at the bottom of the base 100 and longitudinally penetrating through the center of the base 100, the gas channel 300 includes a flow passage communicated with the gas mixing chamber 15 and the ejector tube 200, in order to form a central fire and an outer fire at the fire cover 1 of the burner, the gas mixing chamber 15 includes a first gas mixing chamber 151 located at the inner side and a second gas mixing chamber 152 located at the outer side, the gas channel 300 includes a first partition plate 301, a second partition plate 302 and a third partition plate 303 arranged at intervals, the first partition plate 301 is directly communicated with the ejector tube 200, a first gas channel 3001 communicated with the first gas mixing chamber 151 is formed between the first partition plate 301 and the second partition plate 302, a second gas channel 3002 communicated with the second gas mixing chamber 152 is formed between the second partition plate 302 and the third partition plate 303, and the second partition plate 302 has a through hole 304 communicating the first gas channel 3001 and the second gas channel 3002. For convenience of manufacture, the gas channel 300 further includes a cover plate 305 covering the first partition 301, the second partition 302, and the third partition 303. The first gas channel 3001 has two flow channels, including a first flow channel 3003 and a second flow channel 3004 respectively arranged at two sides of the injection pipe 200, and the sectional areas of the first flow channel 3003 and the second flow channel 3004 are gradually increased from upstream to downstream along the gas flow direction; similarly, the second gas channel 3002 also has two flow channels, including a third flow channel 3005 and a fourth flow channel 3006 respectively disposed at two sides of the injection pipe 200, and the sectional areas of the third flow channel 3005 and the fourth flow channel 3006 are gradually increased from upstream to downstream along the gas flow direction, and the first flow channel 3003 and the second flow channel 3004 of the first gas channel 3001 and the third flow channel 3005 and the fourth flow channel 3006 of the second gas channel 3002 are further respectively disposed at two sides of the corresponding first injection pipe 200 and the second injection pipe 200, so as to replace the "expansion section" of the existing injection pipe 200, so that the overall structure of the base 100 is more compact. In order to supplement secondary air to the fire cover 1, the injection pipe 200, the first gas passage 3001 and the second gas passage 3002 are integrally T-shaped at the bottom of the base 100, and an air supplement passage 400 is formed with the base 100. The ejector tube 200 in this embodiment is flat, so that the ejector tube 200 can be adapted to two or more nozzles at the same time, the inner cavity of the ejector tube 200 is divided into a first contraction portion 201 and a first flat portion 202 connected with the first gas passage 3001 according to the change of the cross section along the airflow direction, the cross section of the cavity surrounded by the first contraction portion 201 is formed by intersecting at least two concentric circles or at least two ellipses similar to circles, and the first nozzle adapted to the ejector tube 200 is arranged at the center of the circle or the center of the ellipse respectively.

The fire cover 1 of the present invention also has a special structure, the fire cover 1 itself can supply secondary air to itself, the fire cover 1 for gas range of the present embodiment includes a ring-shaped body 11, a mixing chamber 15 is formed between a ring-shaped top wall 12 of the body 11 and an inner ring wall 13 and an outer ring wall 14 respectively extending vertically or obliquely downward from the inner edge and the outer edge of the ring-shaped top wall 12, a relatively isolated air replenishing chamber 2 is provided in the mixing chamber 15, the air replenishing chamber 2 at least has one air inlet 21 in fluid communication with the outside air, at least has one first main fire hole 141 in communication with the mixing chamber 15, at least two relatively isolated air replenishing chambers 2 are provided in the mixing chamber 15, and are arranged along the circumferential direction of the mixing chamber 15. Of course, the air supply chamber 2 may also be a single integrated ring. Thus, by arranging the air supplement chamber 2 with relative isolation in the air mixing chamber 15 of the fire cover 1, certainly, the air supplement chamber 2 needs to be isolated from the air mixing chamber 15, and can be used as a closed wall (not shown) through the bottom wall of the air supplement chamber 2, and can also be relatively isolated by matching with the base of the burner, the air supplement chamber 2 is provided with a plurality of air inlet holes 21 which are in fluid communication with the outside air, and is provided with a plurality of first main fire holes 141 which are communicated with the air mixing chamber 15, and the secondary air enters the air mixing chamber 15 through the air inlet holes 21 and flows out from the first main fire holes 141 after being buffered, so that the excessive high air outlet speed of the first main fire holes 141 can be prevented, flame separation can be caused, meanwhile, the first main fire holes 141 of the air supplement chamber 2 can emit fire, and the fire outlet pressure of the first main fire holes 141 in the outer ring wall 14 can be relieved; for convenience of processing, from the viewpoint that the air supplement chamber 2 has a large air inlet, preferably, the air supplement chamber 2 includes a top wall, the top wall is a part of the annular top wall 12 of the fire lid body 11, and the top wall is provided with an air inlet 21 in fluid communication with the air supplement chamber 2.

Specifically, the air replenishment chamber 2 has four side walls: a fourth sidewall 23 adjacent to the outer annular wall 14 and spaced apart from the outer annular wall 14, a first sidewall 24 opposite to the fourth sidewall 23, and a second sidewall 25 and a third sidewall 26 connecting the outer annular wall 14 and the first sidewall 24, wherein the fourth sidewall 23 is opened with a first main fire hole 141. In order to form a central fire and a peripheral fire in the burner cap 1, a vertical annular partition plate 3 is provided in the air mixing chamber 15 to partition the air mixing chamber 15 into a first air mixing chamber 151 located at the inner side and a second air mixing chamber 152 located at the outer side, and an air supplement chamber 2 is located in the second air mixing chamber 152. The first side wall 24 is a part of the annular partition plate 3, so that the overall connection structure is small. In order to realize that the air replenishing chamber 2 can also replenish secondary air to the fire holes corresponding to the second air mixing chamber 152, a circle of convex ring 121 extends upwards from the position of the annular top wall 12 corresponding to the annular partition plate 3, and the part of the convex ring 121 corresponding to the first side wall 24 is provided with an air outlet 1211 for communicating the outside with the air replenishing chamber 2. In order to supplement the secondary air to the inner fire holes 131 of the inner annular wall 13 more quickly, the inner annular wall 13 is provided with the inner fire holes 131 communicated with the first air mixing chamber 151 at intervals along the circumferential direction, and the air outlet 1211 faces the inner fire holes 131. In order to further stabilize the flame inside hole 131, the inner annular wall 13 is circumferentially opened with a first groove 132 below the flame inside hole 131, the flame inside hole 131 penetrates the first groove 132, preferably, the flame inside hole 131 is inclined upward from the outside to the inside, and also in order to stabilize the flame inside hole 141, the inner annular wall 13 is circumferentially opened with a first groove 132 penetrating the flame inside hole 131 below the flame inside hole 131. In order to stabilize the flame, the outer annular wall 14 of the main fire hole 141 of the present invention is circumferentially provided with second main fire holes 143 at intervals, the second main fire hole 143 is communicated with the second gas mixing chamber 152, the second groove 142 is circumferentially formed in the outer annular wall 14 below the second main fire hole 143, and the second main fire hole 143 penetrates the second groove 142.

Claims

1. A burner for a gas cooker, characterized in that: comprises that

A base (100) having an injection pipe (200) provided at the bottom of the base (100);

the fire cover (1) is arranged on the base (100), and a relatively independent air mixing chamber (15) is formed between the fire cover and the base (100);

the gas channel (300) is arranged at the bottom of the base (100) and longitudinally penetrates through the central position of the base (100), and comprises a flow channel communicated with the gas mixing chamber (15) and the injection pipe (200), the gas mixing chamber (15) comprises a first gas mixing chamber (151) positioned on the inner side and a second gas mixing chamber (152) positioned on the outer side, the gas channel (300) comprises a first partition plate (301), a second partition plate (302) and a third partition plate (303) which are arranged at intervals, the first partition plate (301) is directly communicated with the injection pipe (200), a first gas channel (3001) communicated with the first gas mixing chamber (151) is formed between the first partition plate (301) and the second partition plate (302), and a second gas channel (3002) communicated with the second gas mixing chamber (152) is formed between the second partition plate (302) and the third partition plate (303), the second separator (302) has a through hole (304) communicating the first gas passage (3001) and the second gas passage (3002).

2. Burner for gas cooktops according to claim 1, characterized in that: the gas channel (300) further comprises a cover plate (305) capable of covering the first partition plate (301), the second partition plate (302) and the third partition plate (303).

3. Burner for gas cooktops according to claim 2, characterized in that: the first gas channel (3001) is provided with two flow channels, including a first flow channel (3003) and a second flow channel (3004) which are respectively arranged at two sides of the injection pipe (200), and the sectional areas of the first flow channel (3003) and the second flow channel (3004) are gradually increased from the upstream to the downstream along the gas flow direction.

4. Burner for gas cooktops according to claim 3, characterized in that: the second gas channel (3002) also comprises two flow channels, and comprises a third flow channel (3005) and a fourth flow channel (3006) which are respectively arranged at two sides of the injection pipe (200), and the sectional areas of the third flow channel (3005) and the fourth flow channel (3006) are gradually increased from upstream to downstream along the gas flow direction.

5. The burner for a gas range according to any one of claims 1 to 4, wherein: the fire cover (1) comprises an annular body (11), a gas mixing chamber (15) is formed between an annular top wall of the body (11) and an inner annular wall (13) and an outer annular wall (14) which respectively vertically or obliquely extend downwards from the inner edge and the outer edge of the annular top wall (12), and a vertical annular partition plate (3) is arranged in the gas mixing chamber to divide the gas mixing chamber (15) into a first gas mixing chamber (151) located on the inner side and a second gas mixing chamber (152) located on the outer side.

6. Burner for gas cooktops according to claim 5, characterized in that: the second air mixing chamber (152) is internally provided with a relatively isolated air supplement chamber (2), the air supplement chamber (2) is at least provided with an air inlet hole (21) communicated with the outside air in a fluid mode, and at least provided with a first main fire hole (141) communicated with the second air mixing chamber (152).

7. Burner for gas cooktops according to claim 6, characterized in that: the air replenishing chamber (2) comprises a top wall, the top wall is one part of an annular top wall (12) of the fire cover body (11), and an air inlet hole (21) communicated with the air replenishing chamber (2) in a fluid mode is formed in the top wall.

8. Fire cover for gas cookers according to claim 7, wherein: the side walls of the air replenishing chamber (2) are four: a fourth side wall (23) adjacent to the outer ring wall (14) and spaced from the outer ring wall (14), a first side wall (24) opposite to the fourth side wall (23), and a second side wall (25) and a third side wall (26) connecting the outer ring wall (14) and the first side wall (24), wherein the fourth side wall (23) is provided with the first main fire hole (141).

9. Fire cover for gas cookers according to claim 8, wherein: the first side wall (24) is part of the annular partition plate (3).

10. Fire cover for gas cookers according to claim 9, wherein: a circle of convex ring (121) extends upwards from the position of the annular top wall (12) corresponding to the annular partition plate (3), and an air outlet hole (1211) communicated with the outside and the air replenishing chamber (2) is formed in the part, corresponding to the first side wall (24), of the convex ring (121).

11. The fire cover for the gas range according to any one of claims 6 to 10, wherein: the inner ring wall (13) is provided with inner fire holes (131) communicated with the first gas mixing chamber (151) at intervals along the circumferential direction, and the air outlet holes (1211) face the inner fire holes (131) and gradually incline upwards from outside to inside.

12. Fire cover for gas cookers according to claim 11, wherein: the inner ring wall (13) is circumferentially provided with a first groove (132) below the inner fire hole (131), and the inner fire hole (131) penetrates through the first groove (132).

13. The fire cover for the gas range according to any one of claims 6 to 10, wherein: the outer ring wall (13) is provided with second main fire holes (143) communicated with the second gas mixing chamber (152) at intervals along the circumferential direction, the outer ring wall (14) is provided with second grooves (142) along the circumferential direction below the second main fire holes (143), and the main fire holes (143) penetrate through the second grooves (142).

14. The burner for a gas range according to any one of claims 1 to 4, wherein: the injection pipe (200), the first fuel gas channel (3001) and the second fuel gas channel (3002) are integrally T-shaped at the bottom of the base (100), and an air supplement channel (400) is formed between the injection pipe and the base (100).

15. Burner for gas cooktops according to claim 12, characterized in that: the inner cavity of the injection pipe (200) is divided into a first contraction part (201) and a first straight part (202) connected with the first gas channel (3001) along the airflow direction according to the change of the cross section, the cross section of a cavity surrounded by the first contraction part (201) is formed by intersecting at least two concentric circles or at least two ellipses similar to circles, and a first nozzle matched with the injection pipe (200) is respectively arranged at the center of the circle or the center of the ellipse.