CN107975798B

CN107975798B - Burner and cooking appliance

Info

Publication number: CN107975798B
Application number: CN201711148676.5A
Authority: CN
Inventors: 林梦
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2017-11-17
Filing date: 2017-11-17
Publication date: 2019-12-31
Anticipated expiration: 2037-11-17
Also published as: CN107975798A

Abstract

The invention discloses a burner and a cooking appliance. The combustor includes cavity and radiation plate, the radiation plate include well core plate and certainly the radiation fin that extends is buckled to both sides to well core plate, well core plate sets up the cavity, the lower surface of radiation fin is formed with a plurality of sand grips and/or a plurality of concave strip of interval setting, the fire hole has been seted up to the cavity, the play fire direction in fire hole is pressed close to the lower surface of radiation fin. According to the burner provided by the embodiment of the invention, the fire outlet direction of the fire hole is close to the lower surface of the radiation fin, and the convex strip and/or concave strip structure is matched, so that flame burning at the fire hole can generate a wall attachment effect on the lower surface of the radiation fin, the flame is attached to the lower surface of the radiation fin to burn, and therefore, the heat distribution of the whole radiation fin is more uniform, the heat efficiency is higher, and the heating effect is better.

Description

Burner and cooking appliance

Technical Field

The invention relates to the technical field of cooking appliances, in particular to a burner and a cooking appliance.

Background

In the related art, the oven burner transfers heat to the radiation plate by burning the flame, and then transfers heat to the inside of the oven cavity by radiation through the radiation plate to achieve a heating effect. However, the current radiation plate easily causes uneven heat dissipation, and affects the heating effect of the burner.

Disclosure of Invention

Embodiments of the present invention provide a burner and a cooking appliance.

The burner comprises a cavity and a radiation plate, wherein the radiation plate comprises a central plate and radiation fins bent and extended from the central plate to two sides, the central plate is arranged in the cavity, a plurality of convex strips and/or a plurality of concave strips are formed on the lower surface of the radiation fins at intervals, fire holes are formed in the cavity, and the fire outlet directions of the fire holes are close to the lower surfaces of the radiation fins.

According to the burner provided by the embodiment of the invention, the fire outlet direction of the fire hole is close to the lower surface of the radiation fin, and the convex strip and/or concave strip structure is matched, so that flame burning at the fire hole can generate a wall attachment effect on the lower surface of the radiation fin, the flame is attached to the lower surface of the radiation fin to burn, and therefore, the heat distribution of the whole radiation fin is more uniform, the heat efficiency is higher, and the heating effect is better.

In certain embodiments, the radiating fin comprises a first plate connecting the central plate and the second plate, the first plate and the second plate each being obliquely inclined with respect to a horizontal plane, the angle of inclination of the second plate with respect to the horizontal plane being less than the angle of inclination of the first plate with respect to the horizontal plane.

In some embodiments, the lower surface of the radiating fin is formed with a plurality of ribs arranged at intervals, and the protruding degree of the ribs gradually decreases in a direction away from the central plate.

In certain embodiments, the central plate is formed with a plurality of spaced apart recesses that are connected to the cavity.

In some embodiments, the plurality of recesses are staggered and spaced.

In some embodiments, the radiating fin includes a body portion and a tab portion protruding from the body portion, the tab portion connecting the body portion and the central plate, the body portion connecting the central plate.

In certain embodiments, the burner includes an ignition needle holder, the end of the cavity is provided with a nozzle positioning hole, and the ignition needle holder is disposed at an end of the cavity adjacent to the nozzle positioning hole.

In certain embodiments, a first fire transfer groove is provided in an end of the center plate adjacent to the ignition needle holder.

In certain embodiments, an end of the center plate remote from the ignition pin holder is provided with a second fire transmitting groove.

A cooking appliance of an embodiment of the invention comprises a chamber and a burner of any of the above embodiments, the burner being disposed within the chamber.

In the cooking utensil of the embodiment of the invention, the fire outlet direction of the fire hole is close to the lower surface of the radiation fin, and the convex strip and/or concave strip structure is matched, so that flame burning at the fire hole can generate a wall attachment effect on the lower surface of the radiation fin, the flame is attached to the lower surface of the radiation fin to burn, and therefore, the heat distribution of the whole radiation fin is more uniform, the heat efficiency is higher, and the heating effect is better.

Additional aspects and advantages of embodiments of the invention 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 embodiments of the invention.

Drawings

The above and/or additional aspects and advantages of embodiments 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 perspective view of a burner according to an embodiment of the present invention.

Fig. 2 is another perspective view of the burner according to the embodiment of the present invention.

Fig. 3 is a further perspective view of a burner according to an embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view of a burner according to an embodiment of the present invention.

Fig. 5 is an enlarged schematic view of the burner of fig. 4 at V.

Fig. 6 is another schematic sectional view of a burner according to an embodiment of the present invention.

Fig. 7 is an enlarged schematic view of the burner of fig. 6 at VII.

Description of the main element symbols:

the burner 10, the cavity 12, the air holes 122, the fire holes 124, the nozzle positioning holes 126, the radiation plates 14, the central plate 142, the recessed portion 1422, the radiation fins 144, the convex strips 1442, the body portion 1444, the triangular convex portions 1446, the first fire transmission grooves 146, the second fire transmission grooves 148, the first plate 1441, the second plate 1443, the gas equalizing groove 16, the outlet 162 and the ignition needle support 18.

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 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.

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" indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

Referring to fig. 1 to 5, a burner 10 according to an embodiment of the present invention includes a chamber 12 and a radiation plate 14, wherein the radiation plate 14 includes a central plate 142 and radiation fins 144 extending from the central plate 142 to two sides, the central plate 142 is disposed in the chamber 12, a plurality of convex strips 1442 and/or a plurality of concave strips are formed on a lower surface of the radiation fins 144, the chamber 12 is opened with fire holes 124, and a fire direction of the fire holes 124 is close to a lower surface 1440 of the radiation fins 144.

In the burner 10 according to the embodiment of the present invention, the fire outlet direction of the fire hole 124 is close to the lower surface 1440 of the radiation fin 144, and the convex strip 1442 and/or the concave strip structure are/is matched, so that the flame burning at the fire hole 124 can generate a coanda effect on the lower surface 1440 of the radiation fin 144, and the flame is attached to the lower surface 1440 of the radiation fin 144 to burn, thereby making the heat distribution of the whole radiation fin 144 more uniform, the thermal efficiency higher, and the heating effect better.

Specifically, the cavity 12 is substantially in the shape of a circular tube, and the central plate 142 is in the shape of a circular arc. A plurality of fire holes 124 are formed on both sides of the cavity 12 in the radial direction (i.e., perpendicular to the axial direction of fig. 1), and the fire holes 124 are uniformly distributed along the axial direction at linear intervals. In this way, the gas is burnt at fire hole 124 and is released heat, transmits heat to radiation fin 144, reaches the effect of heating through radiation fin 144 to the heat transfer all around, and the linear interval evenly distributed along the axial of a plurality of fire holes 124 helps making the heat distribution on radiation fin 144 even.

Preferably, the upper inner wall 1242 of the fire holes 124 is flush with the lower surface 1440 of the radiation fins 144. Thus, the fire sprayed from the fire holes 124 can be burnt while being attached to the lower surface of the radiation fins 144, and the wall attachment effect is better.

In some embodiments, the radiating fin 144 includes a first plate 1441 and a second plate 1443, the first plate 1441 connecting the central plate 142 and the second plate 1443. Referring to fig. 4, the first plate 1441 and the second plate 1443 are inclined obliquely upward with respect to the horizontal plane, and the inclination angle of the second plate 1443 with respect to the horizontal plane is smaller than the inclination angle of the first plate 1441 with respect to the horizontal plane. Thus, the radiant fins 144 can better match the flame path and the coanda combustion effect is better.

Specifically, the firing direction of the fire holes 124 corresponds to the lower surface 1440 of the first plate 1441, and the flame is ejected from the fire holes 124 toward the lower surface 1440 of the radiation fin 144 and spreads along the lower surface 1440 of the radiation fin 144 to form a coanda effect.

In some embodiments, the lower surface 1440 of the radiating fin 144 is formed with a plurality of ribs 1442 arranged at intervals, and the protrusion degree of the ribs 1442 is gradually decreased toward a direction away from the central plate 142. Therefore, the flame path is well matched, and the wall-attached combustion effect is better.

Specifically, the flames emitted from the fire holes 124 are partially burned at the lower surfaces of the convex strips 1442 and extend along the lower surfaces of the convex strips 1442. On one hand, the coanda combustion effect is better, and on the other hand, the heat exchange area of the radiation fins 144 can be increased, so that the heating effect of the burner 10 is better.

Referring to fig. 6 and 7, in some embodiments, the central plate 142 is formed with a plurality of recesses 1422 at intervals, and the recesses 1422 are connected to the cavity 12.

In this way, on the one hand, the strength of the central panel 142 can be increased and, on the other hand, by connecting the recess 1422 to the cavity 12, the connection is simple.

Specifically, the recess 1422 and the cavity 12 may be connected by welding. Therefore, the process is simple, and is beneficial to improving the production efficiency and reducing the production cost.

Further, the central plate 142 is spaced apart from the outer surface of the cavity 12 except the recess 1422, a space between the central plate 142 and the outer surface of the cavity 12 forms the air equalizing groove 16, the edge of the central plate 142 is spaced apart from the outer surface of the cavity 12 to form the outlet 162 of the air equalizing groove 16, the top of the cavity 12 is opened with the air hole 122 communicated with the air equalizing groove 16, and the fire hole 124 is close to the outlet 162. So, the gas flows out from gas pocket 122 and supplies steady flame to burn in the export 162 department of gas groove 16 for the burning of fire hole 124 department is more stable, realizes designing steady flame structure on radiant panel 14, and the structure of combustor 10 is simpler, has reduced the spare part of combustor 10, helps simplifying manufacturing procedure, and reduction in production cost promotes production efficiency.

In some embodiments, the plurality of recesses 1422 are staggered.

Therefore, the whole gas-homogenizing groove 16 is ensured to be in a communicated state along the axial direction, so that the fuel gas can flow in the gas-homogenizing groove 16.

In some embodiments, the radiating fin 144 includes a body 1444 and a triangular protrusion 1446 protruding from the body 1444, the triangular protrusion 1446 connecting the body 1444 with the central plate 142, and the body 1444 connecting the central plate 142.

As such, the triangular protrusion 1446 may allow a more stable connection between the radiation fins 144 and the central plate 142, reducing the chance of deformation or breakage between the radiation fins 144 and the central plate 142.

Specifically, one end of one side of the triangular projection 1446 is connected to the center plate 142 together with the body 1444, and the other end is connected to the center plate 142 above the connection of the body 1444 and the center plate 142. In this manner, the stress at the connection of the body portion 1444 and the center plate 142 is effectively reduced.

In the embodiment of the present invention, the triangular protrusion 1446 may also function as a convex strip 1442 to increase a heat transfer area and cooperate with flame coanda combustion.

In the present embodiment, the first plate 1441 and the second plate 1443 are connected to form a body portion 1444.

In certain embodiments, the burner 10 includes an ignition needle holder 18, the end of the chamber 12 is provided with a nozzle positioning hole 126, and the ignition needle holder 18 is disposed at an end of the chamber 12 adjacent to the nozzle positioning hole 126.

In this manner, the nozzle may be mounted in the nozzle positioning hole 126, and the ignition needle may be mounted in the ignition needle holder 18 to ignite the gas ejected from the nozzle mounted in the nozzle positioning hole 126, thereby achieving ignition to burn the gas and ignite the gas in the ignition hole 124.

In some embodiments, a first fire transfer pocket 146 is provided in the center plate 142 at an end adjacent the firing pin holder 18.

Thus, the fire transmission path is shorter, the fire transmission speed is faster, and the efficiency is higher.

Specifically, the first fire transfer pocket 146 is a pocket structure formed in an upper surface of the center plate 142. Both sides of the first fire transfer grooves 146 extend to both sides of the central plate 142 near the radiation fins 144, respectively. In this manner, flames on both sides of the central panel 142 may be timely fired to each other. After the ignition needle ignites, the fire hole 124 close to one side of the ignition needle can be combusted, and because the first fire transfer groove 146 is arranged close to the ignition needle support 18, after the ignition needle ignites, the fire hole 124 close to one side of the ignition needle support 18 can be combusted and can rapidly transfer fire through the first fire transfer groove 146 to enable the fire hole 124 far away from one side of the ignition needle support 18 to generate flame.

In some embodiments, an end of the center plate 142 remote from the ignition pin holder 18 is provided with a second fire transmitting groove 148.

In this way, the first fire transfer grooves 146 and the second fire transfer grooves 148 are respectively formed at both ends of the central plate 142, so that flames from both sides of the central plate 142 can be timely transferred to each other, and the flames can be more uniform. The first fire transfer grooves 146 and the second fire transfer grooves 148 are formed in the central plate 142, so that the number of parts of the burner 10 is reduced, the assembly process is simplified, the production efficiency is improved, and the production cost is reduced.

Further, the first fire transfer pocket 146 and the second fire transfer pocket 148 are spaced from the outer surface of the cavity 12 of the center plate 142. Therefore, the whole gas-homogenizing groove 16 is ensured to be in a communicated state along the axial direction, so that the fuel gas can flow in the gas-homogenizing groove 16.

A cooking appliance of an embodiment of the present invention includes a chamber and the burner 10 of any of the above embodiments, the burner 10 being disposed within the chamber.

In the cooking utensil of the embodiment of the present invention, the gas flows out from the gas hole 122 to allow the flame stabilizing flame to burn at the outlet 162 of the gas homogenizing groove 16, so that the burning at the fire hole 124 is more stable, the flame stabilizing structure is designed on the radiation plate 14, the structure of the burner 10 is simpler, the parts of the burner 10 are reduced, the processing procedure is facilitated to be simplified, the production cost is reduced, and the production efficiency is improved.

In one example, the cooking appliance is an oven, and the food to be heated can be placed in the cavity, and gas is burned in the burner 10 and transferred heat through the radiating fins 144 to effect heating of the food to be heated.

In the description of the specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms 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.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, unless specifically limited otherwise.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention, which is defined by the claims and their equivalents.

Claims

1. A burner is characterized by comprising a cavity and a radiation plate, wherein the radiation plate comprises a central plate and radiation fins bent and extended from the central plate to two sides, the central plate is arranged in the cavity, a plurality of convex strips and/or a plurality of concave strips are formed on the lower surface of the radiation fins at intervals, fire holes are formed in the cavity, and the fire outlet direction of the fire holes is close to the lower surfaces of the radiation fins;

the burner also comprises an ignition needle support, the ignition needle support is arranged in the cavity, one end, close to the ignition needle support, of the central plate is provided with a first fire transmission groove, and two sides of the first fire transmission groove respectively extend to two sides of the central plate, close to the radiation fins;

the central plate is provided with a plurality of depressed parts arranged at intervals, the depressed parts are connected with the cavity, the part of the central plate except the depressed parts is spaced from the outer surface of the cavity, an air equalizing groove is formed in the space between the central plate and the outer surface of the cavity, the edge of the central plate is spaced from the outer surface of the cavity to form an outlet of the air equalizing groove, the top of the cavity is provided with an air hole communicated with the air equalizing groove, and the fire hole is close to the outlet.

2. The burner of claim 1, wherein the radiant fins comprise a first plate and a second plate, the first plate connecting the central plate and the second plate, each of the first plate and the second plate being obliquely inclined with respect to a horizontal plane, the angle of inclination of the second plate with respect to the horizontal plane being less than the angle of inclination of the first plate with respect to the horizontal plane.

3. The burner as claimed in claim 1, wherein the lower surfaces of the radiating fins are formed with a plurality of ribs arranged at intervals, and the protrusion degree of the ribs is gradually decreased toward a direction away from the central plate.

4. The burner of claim 1, wherein the plurality of recesses are staggered.

5. The burner of claim 1, wherein the radiating fin includes a body portion and a tab portion projecting from the body portion, the tab portion connecting the body portion and the central plate, the body portion connecting the central plate.

6. The burner of claim 1, wherein the end of the cavity is provided with a nozzle positioning hole, and the ignition needle holder is disposed at an end of the cavity adjacent to the nozzle positioning hole.

7. The burner of claim 1, wherein an end of the center plate remote from the ignition pin holder is provided with a second fire-transmitting groove.

8. A cooking appliance comprising a chamber and a burner as claimed in any one of claims 1 to 7, the burner being disposed within the chamber.