CN216346413U - Combustor and gas cooking utensils that have it - Google Patents

Abstract

The utility model discloses a burner and a gas cooker with the same, wherein the burner comprises: the fire plate is internally provided with an inner ring channel and an outer ring channel which are spaced, and the outer ring channel surrounds the outer side of the inner ring channel; the fire cover is provided with a large fire hole communicated with the inner ring channel, a small fire hole communicated with the outer ring channel and a fire protection hole communicated with the outer ring channel on the same side surface, and the opening of the fire protection hole is larger than that of the small fire hole in the cross section of the fire cover in the radial direction; and the thermocouple is arranged close to the opening of the fire protection hole. According to the burner provided by the embodiment of the utility model, the fire protection hole with the larger opening is arranged on the fire cover, so that the heat sprayed to the thermocouple can be more easily sensed, and the burner is prevented from being extinguished due to the fact that the thermocouple cannot sense the heat and flameout misjudgment is carried out.

Description

Combustor and gas cooking utensils that have it

Technical Field

The utility model relates to the field of household appliances, in particular to a burner and a gas cooker with the same.

Background

In the related art, when the small fire state is burnt, only the small fire hole sprays out the gas, and in order to prevent the problem that the gas sprayed out from the small fire hole generates flame when burning, the conventional means is to make the fire outlet of the small fire hole smaller, so a problem is easily generated, that is, the fire protection effect of the burner is not good, that is, if flame at the thermocouple is fluttered, the thermocouple is very likely to fail to sense heat and carry out flame-out misjudgment, so that the burner is flameout.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a burner, which can better avoid the flame-out misjudgment caused by the thermocouple failing to sense heat, resulting in flame-out of the burner.

According to an embodiment of the utility model, the burner comprises: the fire plate is internally provided with an inner ring channel and an outer ring channel which are spaced, and the outer ring channel surrounds the outer side of the inner ring channel; the fire cover is provided with a large fire hole communicated with the inner ring channel, a small fire hole communicated with the outer ring channel and a fire protection hole communicated with the outer ring channel on the same side surface, and the opening of the fire protection hole is larger than that of the small fire hole in the cross section of the fire cover in the radial direction; and the thermocouple is arranged close to the opening of the fire protection hole.

According to the burner provided by the embodiment of the utility model, the fire protection hole with the larger opening is arranged on the fire cover, so that the heat sprayed to the thermocouple can be more easily sensed, and the burner is prevented from being extinguished due to the fact that the thermocouple cannot sense the heat and flameout misjudgment is carried out.

In addition, the burner according to the utility model may also have the following additional technical features:

optionally, the fire protection holes are provided in a plurality, and the fire protection holes are arranged on the side surface of the fire cover at intervals along the circumferential direction and/or the radial direction of the fire cover.

Optionally, the number of the fire protection holes is inversely proportional to the diameter of the fire protection holes.

Optionally, in the radial direction, the small fire hole is located outside the large fire hole, and the fire protection hole is located between the small fire hole and the large fire hole.

Optionally, the small fire holes are groove-shaped and surround the fire cover, the groove-shaped small fire holes are connected end to end in the circumferential direction of the fire cover, and the fire cover is further provided with connecting holes, and the connecting holes are located between the small fire holes and the outer ring channel to communicate the small fire holes and the outer ring channel.

Optionally, the connection holes are provided in plurality, the connection holes are uniformly spaced along the circumferential direction of the fire cover, and the fire protection hole is located between two adjacent connection holes.

Optionally, the big fire hole is provided with a plurality of big fire holes, and a plurality of big fire holes are arranged along the circumference of the fire cover at intervals, and the quantity a of the big fire holes and the quantity b of the connecting holes satisfy: a is more than 2 b.

Optionally, the diameter of the fire protection hole is larger than the diameter of the connecting hole.

Optionally, at least part of the fire protection holes axially penetrate through the small fire holes in the shape of grooves.

The utility model also provides a gas cooker with the burner of the embodiment.

According to the gas cooker provided by the embodiment of the utility model, the burner is arranged, so that the gas cooker can be relatively stable when burning in a small fire state, and flameout caused by misjudgment is not easy to occur.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a first embodiment of a fire cover of a burner according to an embodiment of the present invention.

Fig. 2 is a sectional view of a first embodiment of a fire cover of a burner according to an embodiment of the present invention.

Fig. 3 is a structural view of a second embodiment of a fire cover of a burner according to an embodiment of the present invention.

Fig. 4 is a sectional view of a second embodiment of a fire cover of a burner according to an embodiment of the present invention.

Fig. 5 is a plan view of a second embodiment of a fire cover of a burner according to an embodiment of the present invention.

Reference numerals:

a fire cover 10,

Big fire hole 1, little fire hole 2, connecting hole 21, fire protection hole 3, inner ring cavity 41, outer ring cavity 42.

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 function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

A burner according to an embodiment of the present invention is described below with reference to fig. 1 to 5.

The burner according to the embodiment of the present invention includes a fire plate, a fire cover 10, and a thermocouple. Specifically, be formed with spaced apart inner ring passageway and outer loop passage in the fire dish, outer loop passage encircles in the outside of inner ring passageway, here, use the combustor to use gas cooking utensils as an example, outer loop passage can draw with little fire and penetrate the pipe intercommunication, inner loop passage can draw with big fire and penetrate the pipe intercommunication, therefore, when carrying out little fire burning, can draw through little fire and penetrate the pipe and lead to outer loop passage with the gas, in order to carry out the burning of little fire state, when carrying out big fire burning, little fire draws the pipe and can lead to the gas towards outer loop passage, big fire draws the pipe and can lead to the gas towards inner ring passageway, thereby carry out the burning of big fire state.

Further, as shown in fig. 1, a large fire hole 1 communicated with the inner ring channel and a small fire hole 2 communicated with the outer ring channel are formed in the side surface of the fire cover 10, that is, when the small fire state is combusted, the small fire hole 2 communicated with the outer ring channel can spray out gas to perform the combustion in the small fire state, when the large fire state is combusted, the large fire hole 1 communicated with the inner ring channel and the small fire hole 2 communicated with the outer ring channel can both spray out gas, at this time, the gas sprayed out from the small fire hole 2 can better mix the gas sprayed out from the large fire hole 1, and can better stabilize the gas sprayed out from the large fire hole 1, so that the burner can have better flame stabilizing effect when the large fire state is combusted.

However, as can be understood from the above description, in order to prevent the problem that the gas ejected from the small fire holes 2 is separated from the flame during the combustion of the gas in the small fire state, the conventional means is to make the fire outlets of the small fire holes 2 smaller, which easily causes a problem that the fire protection effect of the burner is not good, that is, if the flame is drifted at the thermocouple, it is likely that the thermocouple cannot sense the heat and make a false judgment of flame-out, which causes the burner to flame-out, so based on this, by providing the fire protection holes 3 communicating with the outer ring channel on the fire cover 10, the gas flow rate of the small fire holes 2 and the gas flow rate of the fire protection holes 3 have a predetermined ratio, for example, in the cross section of the fire cover 10 in the radial direction, the openings of the fire protection holes 3 are larger than the openings of the small fire holes 2, so that when the gas in the outer ring channel flows toward the fire cover 10, the gas can flow out from small fire hole 2 and fire protection hole 3 respectively, in a specific example as shown in fig. 1, small fire hole 2 is the flute profile that encircles fire lid 10, the opening of flute profile small fire hole 2 is less, and fire protection hole 3 and aperture and opening are all great, can make fire protection hole 3 can spout more gas so that be used for the burning of combustor like this, and make the thermocouple be close to the opening setting of fire protection hole 3, like this, when the gas of spouting of fire protection hole 3 burns, can be better by the thermocouple perception, thereby avoid the thermocouple can't sense the heat and carry out flame-out erroneous judgement, lead to the combustor flame-out.

Therefore, according to the burner provided by the embodiment of the utility model, the fire protection hole 3 with a larger opening is arranged on the fire cover 10, so that the heat sprayed to the thermocouple can be more easily sensed, and the phenomenon that the thermocouple cannot sense the heat to perform flameout misjudgment to cause flameout of the burner can be better avoided.

In some embodiments of the present invention, the fire protection hole 3 is provided in plurality, and the plurality of fire protection holes 3 are provided at the side of the fire cover 10 at intervals along the circumferential direction and/or the radial direction of the fire cover 10, wherein, referring to the view shown in fig. 1, the circumferential direction may refer to the arrowed curved surface m as shown in the drawing, and the radial direction may refer to the left and right direction as shown in fig. 2, and herein, the schematic illustration for the aspect description is only referred to, and is not limited in particular. In a specific example as shown in fig. 3, there are two fire protection holes 3, and two fire protection holes 3 are spaced apart along the circumferential direction of the fire cover 10, where it is understood that there may be three or more fire protection holes 3, which may be specifically set according to actual requirements and is not limited herein; in another specific example shown in fig. 1, six fire protection holes 3 are provided, and since the face where the fire protection holes 3 are provided is an inclined face, the six fire protection holes 3 are arranged in two rows in a substantially lower direction, that is, one row is provided with three fire protection holes 3, the three fire protection holes 3 in each row are uniformly spaced apart in the circumferential direction, and the distance between two fire protection holes 3 adjacent in the upper and lower direction is smaller than the distance between two fire protection holes 3 adjacent in the circumferential direction, it is understood that the number of fire protection holes 3 may also be three, four, five, and the like, and this is not limited herein. In another example, the fire protection holes 3 may be provided only in the up-down direction as shown in fig. 2, and the number of the fire protection holes 3 may be two, three, four, or the like, which is not limited herein.

Further, when the number of fire protection holes 3 is provided with a plurality of, the number of fire protection holes 3 is inversely proportional to the diameter of fire protection holes 3, that is, even if the number of fire protection holes 3 is increased, the diameter of each fire protection hole 3 needs to be reduced, so that the gas flow rate of small fire holes 2 and the gas flow rate of fire protection holes 3 can be kept within a predetermined range to some extent, so that the small fire holes 2 can be combusted in a small fire state, and the heat generated by the gas sprayed from the fire protection holes 3 can be sensed by a thermocouple. For example, as shown in fig. 3, only two fire protection holes 3 are formed in the fire lid 10, the two fire protection holes 3 have the same diameter, i.e., the diameter is R1, as shown in fig. 1, six fire protection holes 3 are formed in the fire lid 10, and the six fire protection holes 3 have the same diameter, i.e., the diameter is R2, so that R1 > R2 according to the above conditions.

With respect to the plurality of fire protection holes 3, it can be understood that when there are a plurality of fire protection holes 3, the diameter of each fire protection hole 3 may be different, or the diameter of only some of the fire protection holes 3 in the plurality of fire protection holes 3 may be equal, and this may be set according to actual requirements without any limitation. In addition, in another example, the fire lid 10 has two fire protection holes 3 with different diameters, the diameter of the fire protection hole 3 with a small diameter is R3, and the fire lid 10 has six fire protection holes 3 with different diameters, the diameter of the fire protection hole 3 with a largest diameter is R4, where R3 > R4.

In some embodiments of the present invention, the small fire holes 2 are located outside the large fire holes 1 in the radial direction, and the fire protection holes 3 are located between the small fire holes 2 and the large fire holes 1. The radial direction can refer to the left-right direction as shown in fig. 2, so that when the small fire holes 2 are arranged on the outer sides of the large fire holes 1, when the combustor is used for combustion in a large-fire state and a small-fire state, the large fire can be combusted in the inner ring, and the small fire can be combusted in the outer ring, so that the use requirement can be met; in addition, compare in little fire hole 2, the fire protection hole 3 that has great gas circulation sets up between big fire hole 1 and little fire hole 2 for not only can give the thermocouple with heat transfer when little fire state burning, can also be based on the further steady flame effect of the gas of big fire hole 1 spun when big fire state burning.

In some embodiments of the present invention, as shown in fig. 1, the small fire holes 2 are groove-shaped to surround the fire cover 10, the groove-shaped small fire holes 2 are connected end to end in the circumferential direction of the fire cover 10, and the fire cover 10 is further formed with a connection hole 21, and the connection hole 21 is located between the small fire holes 2 and the outer ring passage to communicate the small fire holes 2 and the outer ring passage. Therefore, the fuel gas in the outer ring channel can enter the connecting hole 21 firstly and then enter the small fire holes 2 through the connecting hole 21, so that the fire of the groove-shaped small fire holes 2 can be more uniform, so that the groove-shaped small fire hole 2 can better stabilize the flame of the big fire hole 1 compared with the small fire hole 2 arranged in the hole, in addition, by arranging the connecting holes 21, the sizes and the inclined directions of the connecting holes 21 and the fire protection holes 3 can be better arranged, for example, the diameter of the connecting hole 21 is smaller than that of the fire protection hole 3, the axis of the connecting hole 21 is parallel to the axis of the fire protection hole 3, of course, the axis of the connecting hole 21 may not be parallel to the axis of the fire protection hole 3, therefore, the design of the connecting holes 21 and the groove-shaped small fire holes 2 can enable the connecting holes 21 and the fire protection holes 3 in the fire cover 10 to have more structures and layout forms, and the design can be diversified.

The design can be used for better processing the connecting hole 21 and the fire protection hole 3, namely processing the fire cover 10 in an injection molding mode, and the positions of the connecting hole 21 and the fire protection hole 3 can be simultaneously positioned through the same positioning structure, so that the production cost can be reduced.

Further, a plurality of connecting holes 21 may be provided, the plurality of connecting holes 21 are uniformly spaced apart along the circumferential direction of the fire cover 10, and the fire protection holes 3 are located between two adjacent connecting holes 21. For example, as shown in fig. 5, ten connecting holes 21 are provided, ten connecting holes 21 are uniformly spaced, two fire protection holes 3 are spaced in the circumferential direction, and in the circumferential direction of the fire cover 10, two fire protection holes 3 are located between two connecting holes 21, so that more heat can be sprayed towards the thermocouple when the burner is in small-fire combustion, the thermocouple can be better sensed, the wall-surface burner is further extinguished, and the reliability of the burner in small-fire combustion can be improved.

In some embodiments of the present invention, an arrangement unit having a plurality of large fire holes 1 is provided on the fire cover 10, and the plurality of arrangement units are uniformly spaced along the circumferential direction of the fire cover 10, wherein each arrangement unit may be provided with a plurality of large fire holes 1 in the circumferential direction and/or the radial direction of the fire cover 10, for example, as shown in fig. 1, each arrangement unit is provided with three large fire holes 1, and the connection of the three large fire holes 1 is a regular triangle, so that the burner may have a better large fire combustion effect when a large fire burns.

Furthermore, the big fire holes 1 are provided in plurality, the big fire holes 1 are arranged along the circumferential direction of the fire cover 10 at intervals, and the number a of the big fire holes 1 and the number b of the connecting holes 21 satisfy: a is more than 2 b. For example, as shown in fig. 1, each arrangement unit is provided with three large fire holes 1, and the arrangement unit may be provided with twelve, so that the number of the large fire holes 1 is thirty-six, and the number of the connection holes 21 is ten, so that the fire sprayed from the small fire holes 2 only acts as the small fire combustion and the flame stabilization, and when the large fire is combusted, the fire sprayed from the small fire holes 2 only stabilizes the flame of the fire sprayed from the large fire holes 1, and when the large fire is combusted, the small fire of the outer ring is also large, thereby affecting the combustion effect of the burner, and finally possibly affecting the cooking effect.

In addition, when the small fire state burns, when the gas enters the groove-shaped small fire hole 2 through the connecting holes 21, the two connecting holes 21 which are far away from each other can be well used for realizing fire transfer, so based on the quantity relation, the connecting holes 21 can be far smaller than the quantity of the large fire holes 1, and in addition, it can be understood that when the quantity of the connecting holes 21 is less, the area of the overall connecting holes 21 is smaller, more gas can enter the fire protection holes 3, and therefore the fire protection holes 3 can further spray larger flame, and the thermocouple can better sense heat.

In some embodiments of the present invention, the diameter of the fire protection hole 3 is larger than the diameter of the connection hole 21, for example, as shown in fig. 5, ten connection holes 21 are provided on the fire cover 10, the connection holes 21 are uniformly spaced along the circumferential direction of the fire cover 10, two fire protection holes 3 are provided between two adjacent connection holes 21, and the diameter of the fire protection hole 3 is larger than the diameter of the connection hole 21, so that the amount of gas entering the fire protection hole 3 is larger than the amount of gas entering the connection hole 21 at the same position, so that the heat of the fire protection hole 3 when the fire is discharged is larger, and the fire protection hole is easily identified by a thermocouple, and the burner can be prevented from being misfired.

Alternatively, at least part of the fire protection holes 3 may axially penetrate through the groove-shaped small fire holes 2, where the axial direction may refer to the up-down direction in fig. 2, in the example shown in fig. 2, the fire protection holes 3 may extend along the groove-shaped small fire holes 2 extending in the up-down direction along the horizontal direction, the fire protection holes 3 may penetrate through the small fire holes 2 during the up-down direction, specifically, the fire protection holes 3 in fig. 2 are inclined toward the right side during the up-down direction and penetrate through the groove-shaped small fire holes 2 during the extending process, so that, on the one hand, a part of the gas in the fire protection holes 3 may enter into the small fire holes 2, and a majority of the gas may be ejected from the fire protection holes 3.

The structure of the fire cover 10 of a burner according to one embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 1-5, the fire cover 10 has an inner ring chamber 41 facing the inner ring channel and an outer ring chamber 42 facing the outer ring channel, and the side of the fire cover 10 facing outward is formed with a large fire hole 1 and a small fire hole 2, wherein a certain included angle is further formed between the side of the large fire hole 1 and the side of the small fire hole 2, the small fire hole 2 is communicated with the outer ring chamber 42 for combustion in a small fire state, the large fire hole 1 is communicated with the inner ring chamber 41 for combustion in a large fire state, and when the large fire hole 1 is combusted in a large fire state, the small fire hole 2 can stabilize flame of the large fire hole 1.

In the application, the fire protection hole 3 communicated with the outer ring channel is arranged on the fire cover 10, and a preset ratio is provided between the gas flow rate of the small fire hole 2 and the gas flow rate of the fire protection hole 3, for example, in a cross section where the radial direction of the fire cover 10 is located, the opening of the fire protection hole 3 is larger than the opening of the small fire hole 2, so that when the gas in the outer ring channel flows towards the fire cover 10, the gas can respectively flow out from the small fire hole 2 and the fire protection hole 3, the small fire hole 2 is in a groove shape surrounding the fire cover 10, the opening of the groove-shaped small fire hole 2 is smaller, the fire protection hole 3, the aperture and the opening are both larger, so that more gas can be sprayed out from the fire protection hole 3 for combustion of a burner, and the thermocouple is arranged close to the opening of the fire protection hole 3, so that when the sprayed out gas from the fire protection hole 3 is combusted, the thermocouple can be better perceived by the thermocouple, and the misjudgment can be avoided, causing the burner to flame out.

The utility model also provides a gas cooker with the burner of the embodiment.

According to the gas cooker provided by the embodiment of the utility model, the burner is arranged, so that the gas cooker can be relatively stable when burning in a small fire state, and flameout caused by misjudgment is not easy to occur.

Other constructions and operations of burners and gas cooktops according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, references to the description of the terms "some embodiments," "optionally," "further," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A burner, comprising:

the fire plate is internally provided with an inner ring channel and an outer ring channel which are spaced, and the outer ring channel surrounds the outer side of the inner ring channel;

the fire cover (10), the side of the fire cover (10) is formed with a big fire hole (1) communicated with the inner ring channel, a small fire hole (2) communicated with the outer ring channel and a fire protection hole (3) communicated with the outer ring channel, and in the cross section of the fire cover (10) in the radial direction, the opening of the fire protection hole (3) is larger than the opening of the small fire hole (2);

and the thermocouple is arranged close to the opening of the fire protection hole (3).

2. The burner according to claim 1, wherein the fire protection holes (3) are provided in plurality, and the fire protection holes (3) are arranged on the side surface of the fire cover (10) at intervals along the circumferential direction and/or the radial direction of the fire cover (10).

3. Burner according to claim 2, characterized in that the number of said flame-holding holes (3) is inversely proportional to the diameter of said flame-holding holes (3).

4. A burner according to claim 1, characterized in that the small fire holes (2) are located outside the large fire holes (1) in the radial direction, and the fire protection holes (3) are located between the small fire holes (2) and the large fire holes (1).

5. The burner according to claim 1, wherein the small fire holes (2) are groove-shaped surrounding the fire cover (10), the groove-shaped small fire holes (2) are connected end to end in the circumferential direction of the fire cover (10), and the fire cover (10) is further formed with connection holes (21), the connection holes (21) are located between the small fire holes (2) and the outer ring passage to communicate the small fire holes (2) and the outer ring passage.

6. The burner according to claim 5, wherein the connecting holes (21) are provided in plurality, the connecting holes (21) are uniformly spaced along the circumferential direction of the fire cover (10), and the fire protection holes (3) are located between two adjacent connecting holes (21).

7. The burner according to claim 6, characterized in that the big fire holes (1) are provided in plurality, a plurality of the big fire holes (1) are arranged along the circumferential direction of the fire cover (10) at intervals, and the number a of the big fire holes (1) and the number b of the connecting holes (21) satisfy: a is more than 2 b.

8. Burner according to claim 5, characterized in that the diameter of the flame-protection orifice (3) is greater than the diameter of the connection orifice (21).

9. A burner according to claim 5, characterized in that at least part of said flame holding holes (3) axially pass through said small flame holes (2) of channel shape.

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

Images