CN210197284U - Burner for gas stove - Google Patents

Abstract

The utility model relates to a burner for a gas stove, which comprises a base, wherein the base is provided with a concave cavity with an upward opening, and the center of the concave cavity is provided with an ejector; the connector, including the plate body of suspension on the base, the central point of plate body has vertical drawing and penetrates the pipe, draws to penetrate the pipe and can stretch into the concave cavity and set up relatively with the sprayer, and the central point of plate body has downwardly extending to have vertical setting draw and penetrates the pipe, should draw to penetrate the pipe and stretch into the concave cavity of base and relative with the sprayer, draws in the clearance between plate body and the base and the cavity of base and penetrates the part outside the pipe and constitute primary air channel, its characterized in that: the plate body is provided with in the periphery of drawing penetrating the pipe and is used for preheating primary air's preheating element among the primary air passageway, compares with prior art, the utility model has the advantages of: the preheating element can effectively preheat the primary air temperature and reduce heat loss by utilizing the heat accumulated by the ejector pipe and the base in the cooking process.

Description

Burner for gas stove

Technical Field

The utility model relates to a combustor especially relates to a combustor for gas-cooker.

Background

At present, a complete upper air inlet type burner is used in a plurality of gas cookers, and because primary air and secondary air required by the complete upper air inlet type burner during burning are both from the upper part of a cooker panel, a chassis of the gas cooker can be completely sealed. However, the conventional burner with complete upward air intake is realized by the gap between the air mixing chamber and the base when supplementing primary air, and therefore, the gap exists between the air mixing chamber and the base, which easily causes the appearance of the burner to be not beautiful enough on the one hand, and on the other hand, the overflowing liquid flows into the base through the gap, which is not only unfavorable for cleaning the burner, but also can affect the normal use of the burner if the overflowing liquid can not be removed for a long time. Therefore, as disclosed in the chinese utility model patent No. ZL201020579358.1 (No. CN 2018586642U), the burner includes a burner base, a burner cap base, a central burner cap and an outer ring burner cap, wherein the burner cap base includes a burner cap upper base, a burner cap lower base and a central air supply hole, a primary air inlet gap is provided between the burner cap lower base and the burner base, and the primary air inlet gap is located above the panel. As another example, the present applicant provides an upper air inlet burner of a gas stove using a primary air and a secondary air both supplied through air holes of a gas mixing chamber, specifically referring to chinese patent No. ZL201410209837.7 (publication No. CN103994436B), in which a cavity of a base is isolated from an annular chamber of the gas mixing chamber, and a primary air hole opened at a side of the gas mixing chamber communicates with the cavity to form a primary air passage, so that the primary air can be supplied without providing a gap between the gas mixing chamber and the base, but the primary air hole and the secondary air hole still inevitably allow liquid overflow to enter during use, thereby blocking a nozzle.

In addition, heat generated by combustion of gas is lost along the path of the fire lid-mixing chamber-base, so that it is an effective way to improve thermal efficiency by reducing the heat conduction loss of the high-temperature fire lid downward or recycling the heat loss.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the first technical problem that a combustor for gas-cooker of avoiding the discharge to block up the nozzle is provided to above-mentioned prior art current situation.

The second technical problem to be solved in the utility model is to provide a combustor for gas-cooker that can effectively preheat primary air temperature, reduce the heat loss to above-mentioned prior art current situation.

For solving the first technical problem, the utility model discloses a technical scheme be: this a combustor for gas-cooker including:

the base is provided with a concave cavity with an upward opening, and the center of the concave cavity is provided with an ejector;

the connector, including the suspension in the plate body above the base, the periphery of plate body is along covering cavity, its characterized in that:

the central point of plate body has downwardly extending has the vertical setting to draw and penetrates the pipe, should draw the upper end opening that penetrates the pipe and be the gas outlet end, should draw the lower extreme opening that penetrates the pipe and be the gas inlet end, and stretch into in the cavity of base with the sprayer is relative, the clearance between plate body and the base and draw in the base cavity and penetrate the part outside the pipe and constitute primary air channel.

In order to solve the second technical problem, preferably, a preheating element for preheating the primary air in the primary air passage is disposed on the plate body at the periphery of the injection pipe. The plate body is provided with a preheating element for preheating primary air in the primary air channel at the periphery of the injection pipe, so that the temperature of the primary air is effectively preheated by utilizing the heat accumulated by the injection pipe and the base in the cooking process, and the heat loss is reduced.

Further, a fire cover is further arranged on the connecting body, a gas mixing chamber is formed between the fire cover and the connecting body, and the gas mixing chamber corresponds to the gas outlet end of the injection pipe and is used for mixing primary air and fuel gas.

In order to uniformly flow primary air flowing into the concave cavity through the primary air channel, the preheating element comprises at least two rotary arm type preheating sheets arranged around the injection pipe, and the preheating sheets are arranged at intervals along the circumferential direction of the plate body and are integrally spirally radial.

Furthermore, each rotary arm type preheating piece comprises an inner side end close to the injection pipe and an outer side end far away from the injection pipe, the inner side end extends downwards along the axial direction of the injection pipe to form a convex rib, and the outer peripheral edge of the convex rib abuts against the inner peripheral wall of the base. The inner side end of the rotary arm type preheating piece is directly connected with the ejector pipe, the outer side end of the rotary arm type preheating piece is abutted against the inner peripheral wall of the base, and then the primary air of the primary air channel is preheated by fully utilizing the combustion heat generated by the base and the ejector pipe in the combustion process of the burner.

In order to increase the exchange path and the exchange time of the primary air and the preheating element, each convex rib forms an included angle or is parallel to the central axis of the injection pipe.

Furthermore, each convex rib and the central axis of the injection pipe form an included angle, and each convex rib is provided with an arc surface.

Preferably, the outer side end of each rotary arm type preheating piece extends out of the concave cavity and extends to the outer peripheral edge of the plate body, and a gap between every two adjacent rotary arm type preheating pieces forms an air inlet communicated with the primary air channel. So as to realize the function that the preheating plate also has the air inlets which uniformly divide the primary air channel at intervals along the circumferential direction.

Further, the fire cover comprises an outer ring part, the gas mixing chamber comprises a first gas mixing chamber corresponding to the outer ring part, and the first gas mixing chamber corresponds to the gas outlet end of the injection pipe and is used for mixing primary air and fuel gas.

Further, the outer ring portion includes inner ring wall and outer lane wall and the diapire of connecting inner ring wall and outer lane wall that concentric interval set up, inner ring wall and outer lane wall top cover have outer ring fire lid, inner ring wall, outer lane wall, diapire and outer ring fire lid enclose jointly and establish into first gas mixing chamber.

In order to meet the requirement that when the combustor is an upper air inlet combustor, secondary air and primary air are supplemented to the combustor from the upper part of the panel, and secondary air inlet channels independent of the first air mixing chamber are formed in the wall surface of the outer ring at intervals along the circumferential direction.

The inner circumference of the inner ring wall surface extends towards the central position above the air outlet end of the injection pipe to form an inner cover plate, a gap between the inner cover plate and the upper surface of the connecting body forms an inlet communicated with the first gas mixing chamber, and the secondary air inlet channel is guided into a cavity enclosed by the inner cover plate and the inner ring wall surface.

In order to realize that the combustor can satisfy the control of user to periphery fire and central fire, fire lid is still including being located outer ring portion's interior annular portion, interior annular portion is including being located inner ring wall that encloses in the inner circle wall and cover the interior fire lid of interior annular wall top, interior annular wall, interior fire lid enclose jointly and establish into the second and mix the gas chamber, the second mixes the gas chamber and is located on the gas outlet end of drawing the injection pipe, secondary air inlet channel is leading-in the regional of a fire of interior fire lid.

The gas mixing device further comprises a transmission channel connected with the inner annular wall and the inner annular wall, and the transmission channel is used for transmitting the mixed primary air and the mixed gas to the first gas mixing chamber from the gas outlet end of the injection pipe.

Compared with the prior art, the utility model has the advantages of: through set up the connector in the cavity of base, this connector is including the plate body and draw and penetrate the pipe, wherein the plate body suspension is on the base, draw penetrate the pipe and stretch into the cavity of base and relative with the sprayer, and then draw the part outside penetrating the pipe in the clearance between plate body and the base cavity and constitute primary air channel, in case the overflow passes through primary air channel and gets into in the cavity, draw the pipe wall that penetrates the pipe and can also regard as the protective wall that blocks the overflow entering sprayer to avoid the jam of sprayer.

Drawings

Fig. 1 is a schematic structural view of a burner in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a burner resting on a panel according to embodiment 1 of the present invention;

FIG. 3 is a cross-sectional view at an angle in FIG. 2;

FIG. 4 is a cross-sectional view at another angle from FIG. 2;

FIG. 5 is a cross-sectional view at yet another angle in FIG. 2;

fig. 6 is a schematic structural view of a connector in embodiment 1 of the present invention;

FIG. 7 is a cross-sectional view of FIG. 6;

FIG. 8 is an exploded view of FIG. 2;

fig. 9 is a schematic structural view of an angle of the outer ring portion in embodiment 1 of the present invention (the outer ring fire cover is omitted);

FIG. 10 is a schematic view of the structure of FIG. 9 at another angle;

fig. 11 is a schematic structural view of a burner in embodiment 2 of the present invention;

fig. 12 is a cross-sectional view of fig. 11.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Example 1

As shown in fig. 1 to 10, embodiment 1 of the present invention is described. The combustor for the gas stove in this embodiment is including base 1, this base 1 has the cavity 11 that the opening faces upwards, the central point of this cavity 11 is provided with sprayer 2, and connector 3, this connector 3 is including suspending the plate body 30 above base 1, the periphery of plate body 30 is along covering the cavity, the central point of plate body 30 has downwardly extending and has the injection pipe 31 of vertical setting, the upper end opening of this injection pipe 31 is gas outlet end 311, the lower extreme opening of this injection pipe is for air inlet end 312, and will stretch into in the cavity 11 of base and relative with sprayer 2, the clearance between plate body 30 and the base and the part outside the injection pipe 31 in the cavity 11 of base constitute primary air channel 8. Through set up connector 3 in cavity 11 at base 1, this connector 3 is including plate body 30 and ejector pipe 31, wherein plate body 30 suspension is on base 1, ejector pipe 31 stretches into in cavity 11 of base 1 and relative with sprayer 2, and then draw the part outside ejector pipe 31 in the clearance between plate body 30 and the base 1 and the cavity 11 of base 1 and constitute primary air passageway 8, in case the overflow passes through primary air passageway 8 and gets into cavity 11, the pipe wall of ejector pipe 31 can also regard as the protection wall that blocks the overflow and get into sprayer 2, thereby avoid the jam of sprayer 2.

In order to effectively preheat the primary air temperature and reduce the heat loss, a preheating element for preheating the primary air in the primary air channel 8 is arranged on the periphery of the injection pipe 31 of the connecting body 3. Wherein, the preheating element comprises at least two rotary arm type preheating pieces 32 arranged around the injection pipe 31, and in order to uniformly flow the primary air flowing into the concave cavity 11 through the primary air channel 8, the preheating pieces are arranged at intervals along the circumferential direction of the plate body 30 and are in a spiral radial shape integrally. Moreover, each swing-arm preheating piece 32 comprises an inner end 321 adjacent to the injection pipe 31 and an outer end 322 far away from the injection pipe 31, the inner end 321 extends downwards along the axial direction of the injection pipe 31 to form a convex rib 3211, the outer periphery of the convex rib 3211 abuts against the inner peripheral wall of the base 1, the inner end 321 of the swing-arm preheating piece is directly connected with the injection pipe 31, and the outer end 322 of the swing-arm preheating piece abuts against the inner peripheral wall of the base 1, so that the primary air of the primary air channel 8 is preheated by fully utilizing the combustion heat generated by the base 1 and the injection pipe 31 in the combustion process of the burner. In order to increase the exchange path and the exchange time of the primary air and the preheating element, each rib 3211 forms an angle with or is parallel to the central axis of the injection pipe 31. Preferably, each rib 3211 forms an included angle with the central axis of the injection pipe 31, and the rib 3211 has an arc surface. In addition, the outer end 322 of each radial-arm preheating piece 32 extends out of the cavity 11 and extends to the outer periphery of the plate body, and the gap between adjacent radial-arm preheating pieces 32 forms an air inlet 81 communicated with the primary air channel 8, so that the preheating pieces 32 also have the function of uniformly separating the air inlets 81 of the primary air channel 8 at intervals along the circumferential direction.

In addition, in order to prevent the overflow flowing into the cavity 11 through the primary air channel 8 from affecting the ejector 2, the base 1 is provided with an annular blocking wall 12 at the periphery of the ejector 2, in order to realize that the annular blocking wall 12 also has an air inlet end for better guiding the primary air to enter the injection pipe 31, an upper end outlet 121 of the annular blocking wall 12 at least partially extends into the air inlet end 312 of the injection pipe 31, and a top edge 122 of the annular blocking wall 12 corresponding to the air inlet end 312 is gradually inclined upwards from outside to inside. In order to achieve the function of the annular wall 12 as a barrier against spills, the annular wall 12 preferably encloses an air chamber 120 of the ejector 2, the air chamber 120 being connected to the external air supply 14, the air chamber 120 being connectable to the external air supply 14, for example a blower, to achieve the desired adjustment of the amount of primary air.

The fire cover comprises an outer ring part 5, the air mixing chamber comprises a first air mixing chamber 51 corresponding to the outer ring part 5, the outer ring part comprises an inner ring wall surface 52 and an outer ring wall surface 53 which are concentrically arranged at intervals and a bottom wall 54 connected with the inner ring wall surface 52 and the outer ring wall surface 53, an outer ring fire cover 55 covers the inner ring wall surface 52 and the outer ring wall surface 53, and the inner ring wall surface 52, the outer ring wall surface 53, the bottom wall 54 and the outer ring fire cover 55 are jointly surrounded into the first air mixing chamber 51. In order to realize that the burner can meet the control of the peripheral fire and the central fire of a user, the fire cover further comprises an inner ring part 6 positioned on the inner periphery of the outer ring part 5, the gas mixing chamber comprises a second gas mixing chamber 61 corresponding to the inner ring part 6, the inner ring part comprises an inner ring wall 62 positioned on the inner periphery of the inner ring wall surface 52 and an inner fire cover 63 covering the upper part of the inner ring wall 62, the inner ring wall 62 and the inner fire cover 63 jointly enclose the second gas mixing chamber 61, the second gas mixing chamber 61 is positioned on the gas outlet end 311 of the injection pipe 31, in order to meet the requirement that when the burner is an upper air inlet burner, secondary air and primary air are supplemented to the upper air mixing chamber from the panel 9, the outer ring wall surface 53 is provided with secondary air inlet channels 7 independent of the first gas mixing chamber 51 at intervals along the circumferential direction, the transmission channels 44 and the secondary air inlet channels 7 are arranged at intervals, and gaps between the adjacent transmission channels 44 form, the secondary air intake channel 7 leads into the fire outlet area of the inner fire cover 63. Finally, in order to better transmit the mixed primary air and fuel gas to the first gas mixing chamber 51 from the air outlet 311 of the injection pipe, the gas mixing chamber further comprises a transmission channel 44, and the transmission channel 44 is used for transmitting the mixed primary air and fuel gas to the first gas mixing chamber 51 from the air outlet 311 of the injection pipe 31.

Example 2

The structure is basically the same as that of the embodiment 1, and the only difference is that: the fire cover only has an outer ring part 5, an inner cover plate 521 is formed by extending the inner periphery of the inner ring wall surface 52 to the central position above the air outlet end 311 of the injection pipe 31, an inlet 501 communicated with the first air mixing chamber 51 is formed by a gap between the inner cover plate 521 and the upper surface of the connecting body 30, and secondary air flowing into the secondary air inlet channel is guided into a cavity 50 formed by the inner cover plate 521 and the inner ring wall surface 52 through the air outlet 71, as shown in fig. 11 and 12.

Claims (14)

1. A burner for a gas range, comprising:

the ejector comprises a base (1) and a base, wherein the base is provided with a cavity (11) with an upward opening, and an ejector (2) is arranged in the center of the cavity (11);

connector (3), including suspension in plate body (30) on base (1), the periphery of plate body (30) is along covering cavity (11), its characterized in that:

the central point of plate body (30) has downwardly extending and has vertical setting to draw and penetrate pipe (31), and the upper end opening that should draw and penetrate pipe (31) is air outlet end (311), and the lower extreme opening that should draw penetrates pipe (31) is air inlet end (312) and stretch into in cavity (11) of base (1) with ejector (2) are relative, the clearance between plate body (30) and base (1) and draw in base (1) cavity (11) and penetrate the part outside pipe (31) and constitute primary air channel (8).

2. Burner for gas cooktops according to claim 1, characterized in that: the plate body (30) is provided with a preheating element for preheating primary air in the primary air channel (8) at the periphery of the injection pipe (31).

3. Burner for gas cooktops according to claim 2, characterized in that: a fire cover is further arranged on the connecting body (3), a gas mixing chamber is formed between the fire cover and the connecting body (3), and the gas mixing chamber corresponds to the gas outlet end (311) of the injection pipe (31) and is used for mixing primary air and fuel gas.

4. Burner for gas cooktops according to claim 3, characterized in that: the preheating element comprises at least two rotary arm type preheating pieces (32) arranged around the injection pipe (31), and each rotary arm type preheating piece (32) is arranged at intervals along the circumferential direction of the connecting body (3) and is integrally in a spiral radial shape.

5. Burner for gas cooktops according to claim 4, characterized in that: each rotary arm type preheating piece (32) comprises an inner side end (321) adjacent to the injection pipe (31) and an outer side end (322) far away from the injection pipe (31), the inner side end (321) extends downwards along the axial direction of the injection pipe (31) to form a convex rib (3211), and the outer periphery of the convex rib (3211) is abutted against the inner peripheral wall of the concave cavity (11).

6. Burner for gas cooktops according to claim 5, characterized in that: each convex rib (3211) and the central axis of the injection pipe (31) form an included angle or are parallel.

7. Burner for gas cooktops according to claim 6, characterized in that: each convex rib (3211) and the central axis of the injection pipe (31) form an included angle, and each convex rib (3211) is provided with an arc surface.

8. Burner for gas cooktops according to claim 7, characterized in that: the outer side end (322) of each rotary arm type preheating piece (32) extends out of the concave cavity (11) and extends to the outer periphery edge of the plate body (30), and a gap between every two adjacent rotary arm type preheating pieces (32) forms an air inlet (81) communicated with the primary air channel (8).

9. The burner for a gas range according to any one of claims 3 to 8, wherein: the fire cover is including outer ring portion (5), outer ring portion (5) set up on connector (3), and with be formed with first gas mixing chamber (51) between connector (3), first gas mixing chamber (51) correspond draw and penetrate gas outlet end (311) of pipe (31) for mix primary air and gas.

10. Burner for gas cooktops according to claim 9, characterized in that: outer ring portion (5) including concentric inner circle wall (52) and outer lane wall (53) that the interval set up and diapire (54) of connecting inner circle wall (52) and outer lane wall (53), inner circle wall (52) and outer lane wall (53) top cover have outer ring fire lid (55), inner circle wall (52), outer lane wall (53), diapire (54) and outer ring fire lid (55) enclose jointly and establish into first gas mixing chamber (51).

11. Burner for gas cooktops according to claim 10, characterized in that: and the outer ring wall surface (53) is provided with secondary air inlet channels (7) which are independent from the first air mixing chamber (51) at intervals along the circumferential direction.

12. Burner for gas cooktops according to claim 11, characterized in that: the inner circumference of the inner ring wall surface (52) extends to the central position above the air outlet end (311) of the injection pipe (31) to form an inner cover plate (521), a gap between the inner cover plate (521) and the upper surface of the connecting body (3) forms an inlet (501) communicated with the first air mixing chamber (51), and the secondary air inlet channel (7) is led into a cavity (50) enclosed by the inner cover plate (521) and the inner ring wall surface (52).

13. Burner for gas cooktops according to claim 11 or 12, characterized in that: the fire lid is still including being located the interior annular portion (6) of outer ring portion (5), interior annular portion (6) are including being located inner circle wall (52) internal ring shape wall (62) of internal circumference and cover are in interior annular wall (62) top interior fire lid (63), interior annular wall (62), interior fire lid (63) enclose jointly and establish into second gas mixing chamber (61), second gas mixing chamber (61) are located draw on gas outlet end (311) of penetrating pipe (31), secondary air inlet channel (7) are leading-in the play fire region of interior fire lid (63).

14. Burner for gas cooktops according to claim 13, characterized in that: the gas mixing device further comprises a transmission channel (44) connected with the inner annular wall (62) and the inner ring wall surface (52), and the transmission channel (44) is used for transmitting the mixed primary air and gas to the first gas mixing chamber (51) from the gas outlet end (311) of the ejector pipe (31).

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