CN109000230B

CN109000230B - Burner with a burner body

Info

Publication number: CN109000230B
Application number: CN201811020444.6A
Authority: CN
Inventors: 孙明雪; 林梦
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2018-09-03
Filing date: 2018-09-03
Publication date: 2023-09-05
Anticipated expiration: 2038-09-03
Also published as: CN109000230A

Abstract

The invention discloses a burner. The burner comprises a distributor, the distributor comprises a body and an injection pipe, the body is provided with a mixed gas tank, the injection pipe is arranged below the body and communicated with the mixed gas tank, and when the burner is horizontally placed, the injection pipe is obliquely arranged in comparison with the horizontal direction, and the included angle between the injection pipe and the horizontal direction is 26-50 degrees. Therefore, the burner of the embodiment of the invention can prolong the length of the injection pipe under the condition that the height and the transverse dimension of the burner are unchanged by obliquely arranging the injection pipe, enhance the injection capacity of the injection pipe, ensure that the fuel gas and the air are mixed more fully in the injection pipe, ensure that the fuel gas is combusted more fully, ensure that the content of carbon monoxide is lower, effectively improve the heat efficiency of the burner, be beneficial to being applied to a high-power burner, and reduce the manufacturing difficulty and the production cost of the burner under the condition that the burner is beneficial to being miniaturized by arranging the injection pipe at a proper inclination angle.

Description

Burner with a burner body

Technical Field

The invention relates to the field of household kitchen ranges, in particular to a combustor.

Background

The burner in the related art adopts the injection pipe to mix gas and air, and the injection pipe is generally horizontal or vertical to be set up, and the length of injection pipe is restricted to lead to injecting the distance restriction, possibly lead to injecting inadequately, gas and air mix inadequately, produce more carbon monoxide when leading to the mixed gas burning easily, and thermal efficiency is lower, is difficult to satisfy high-power burner's requirement.

Disclosure of Invention

In view of this, embodiments of the present invention provide a burner.

The burner of the embodiment of the invention comprises a distributor, wherein the distributor comprises:

the gas mixing device comprises a body, a gas mixing device and a gas mixing device, wherein a mixed gas groove is formed in the body; and

the ejector tube is arranged below the body and communicated with the mixed gas tank, and when the burner is horizontally placed, the ejector tube is obliquely arranged compared with the horizontal direction, and an included angle between the ejector tube and the horizontal direction is 26-50 degrees.

In certain embodiments, the body comprises a baffle comprising a substantially circular upper surface and a substantially circular outer edge and an inner edge, the outer edge and the inner edge being symmetrical about a diameter of the upper surface, the inner edge comprising a substantially circular first inner edge and a substantially circular second inner edge connected to the first inner edge, the circle of the first inner edge being concentric with the circle of the outer edge, the circle of the second inner edge inscribing the circle of the outer edge;

the body includes from outward flange upwards extension's outward flange lateral wall and from inward flange lateral wall that inward flange upwards extends, the inward flange lateral wall includes from first inward flange lateral wall that first inward flange upwards extends and from second inward flange lateral wall that second inward flange upwards extends, the mixed gas groove includes the first mixed gas groove that outward flange lateral wall and first inward flange lateral wall enclose with the second mixed gas groove that outward flange lateral wall and second inward flange lateral wall enclose.

In certain embodiments, the eductor tube is in communication with the second mixed gas tank.

In certain embodiments, the distributor comprises a plurality of first fire ports formed in the top of the outer edge side wall, a plurality of second fire ports formed in the top of the first inner edge side wall, and a plurality of third fire ports formed in the top of the second inner edge side wall.

In certain embodiments, the first fire orifice has a size that is greater than the second fire orifice and the third fire orifice has a size that is greater than the first fire orifice.

In certain embodiments, the body includes a shield located within the inner edge, the shield forming an inner ring secondary air passage with the inner edge on both sides.

In certain embodiments, the burner comprises a bottom cup, an ignition needle and a thermocouple, the bottom cup comprises a supporting surface and primary air reaching chambers formed by the supporting surface downwards along the height direction of the bottom cup, the supporting surface is provided with a first mounting through hole and a second mounting through hole, the ignition needle and the thermocouple are respectively mounted in the first mounting through hole and the second mounting through hole, the body comprises a first positioning through hole and a second positioning through hole which are positioned at the shielding part, and the first positioning through hole and the second positioning through hole are respectively positioned at the ignition needle and the thermocouple, so that the distributor is mounted in the bottom cup and the injection pipe is positioned in the primary air reaching chambers.

In some embodiments, the distributor comprises a spacer comprising a spacer block disposed on the shielding portion and a projection disposed on the ejector tube, and the support surface supports the distributor via the spacer block and the projection and forms a gap with the distributor on both sides.

In certain embodiments, the distributor comprises a spacing portion comprising a first fixture block disposed on the spacer block and a second fixture block disposed on the ejector tube, the first fixture block and the second fixture block together defining movement of the distributor in the horizontal direction on the bottom cup.

In certain embodiments, the burner includes a nozzle located within the primary air arrival chamber, and the base cup includes a nozzle mount on which the nozzle is mounted and is disposed coaxially with the ejector tube.

According to the burner provided by the embodiment of the invention, the ejector pipe is obliquely arranged, so that the length of the ejector pipe can be prolonged under the condition that the height and the transverse dimension of the burner are unchanged, the ejector capability of the ejector pipe is enhanced, and the fuel gas and the air are mixed more fully in the ejector pipe, so that the fuel gas is combusted more fully, the content of carbon monoxide is lower, the thermal efficiency of the burner is effectively improved, the burner is favorably applied to a high-power burner, and the manufacturing difficulty and the production cost of the burner can be reduced under the condition that the burner is favorably miniaturized due to the arrangement of the ejector pipe with a proper inclination angle.

Additional aspects and advantages 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 the invention.

Drawings

The foregoing 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, in which:

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

FIG. 2 is a schematic top view of a burner according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of the combustor of FIG. 1 along line III-III;

FIG. 4 is a schematic cross-sectional view of the combustor of FIG. 2 along line IV-IV;

FIG. 5 is a schematic perspective view of a bottom cup according to an embodiment of the invention;

FIG. 6 is a schematic cross-sectional view of a base cup according to an embodiment of the invention;

FIG. 7 is a schematic perspective view of a nozzle according to an embodiment of the present invention;

FIG. 8 is a schematic perspective view of a distributor member according to an embodiment of the present invention;

FIG. 9 is another perspective view of a distributor member of an embodiment of the present invention;

FIG. 10 is yet another perspective view of an distributor member of an embodiment of the present invention;

FIG. 11 is a schematic top view of a fire cover according to an embodiment of the invention;

FIG. 12 is a schematic cross-sectional view of the combustor of FIG. 1 along line XII-XII; and

Fig. 13 is a schematic cross-sectional view of the burner of fig. 2 along line XIII-XIII.

Reference numerals illustrate:

a burner 100;

the bottom cup 10, the support surface 11, the primary air reaching chamber 12, the first mounting through hole 13, the second mounting through hole 14, the outer circumferential side 15, and the nozzle holder 16;

primary air inlet 121, straight edge 122, circular arc edge 123, planar side wall 124, circular arc wall 125, bottom surface 126, outer connecting portion 161, communicating portion 162, nozzle mounting portion 163, center line CL1, center line CL2, center line CL3;

nozzle 20, head 21, connection 22, cone hole 23, nozzle inlet 24, nozzle outlet 25, centerline CL4;

the distributor 30, the body 31, the injection pipe 32, the spacing part 33 and the limiting part 34;

the partition 311, the outer edge side wall 312, the inner edge side wall 313, the mixed gas tank 314, the gas inlet 321, the gas outlet 322, the first pipe section 323, the second pipe section 324, the third pipe section 325, the bearing surface 331, the spacer 332, the bump 333, the first fixture 341, the second fixture 342;

the upper surface 3111, the lower surface 3112, the outer edge 3113, the inner edge 3114, the first inner edge 3115, the second inner edge 3116, the secondary air channel 3117, the shield 3118, the first fire hole 3121, the first inner edge sidewall 3131, the second inner edge sidewall 3132, the first mixed gas slot 3141, the second mixed gas slot 3142, the first spacing side 3411, the first spacing plane 3412, the second spacing side 3421;

The body 31181, the tail 31182, the first positioning through-hole 31183, the second positioning through-hole 31184, the second fire hole 31311, the third fire hole 31321, the center line CL5, the center line CL6;

fire cover 40, fire cover outer profile 41, fire cover inner profile 42;

the ignition needle 50, the thermocouple 60, and the void 70.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "row direction", "column direction", "center", "longitudinal", "transverse", "length", "width", "thickness", "edge", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "plurality" means an index of two or more, unless specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Referring to fig. 1 to 4 together, a burner 100 according to an embodiment of the present invention may be used on a cooking hob, for example, a household gas hob (not shown). In use, the burner 100 can be horizontally placed and mounted on a gas stove as shown in fig. 4 and connected to a gas source to enable the gas to be ignited and burned by the burner 100 for cooking.

The burner 100 includes a base cup 10, a nozzle 20, an distributor 30, a fire cap 40, an ignition needle 50, and a thermocouple 60.

Referring to fig. 5 and 6 together, in the present embodiment, the bottom cup 10 may be made of cast iron, cast aluminum, cast copper, or other materials, and has a substantially circular cup shape. The bottom cup 10 includes a support surface 11. The support surface 11 is substantially circular and is positioned at the top of the bottom cup 10 when the burner 100 can be placed horizontally as shown in fig. 4.

The bottom cup 10 forms primary air from the support surface 11 down the height of the bottom cup 10 (i.e., in the vertical direction in fig. 4) to the chamber 12. The primary air reaches the chamber 12 in a substantially cylindrical shape and forms a primary air inlet 121 through the support surface 11. The primary air inlet 121 is symmetrical about a center line CL1 of the support surface 11 (or a diameter parallel to the center line CL1 in the support surface 11), and forms two straight sides 122 substantially parallel to the center line CL1 and two circular arc sides 123 connecting the two straight sides 122. The two circular arc edges 123 lie substantially on the same circle and the circle on which the two circular arc edges 123 lie is substantially concentric with the circle on which the support surface 11 lies.

The ratio of the width of the primary air inlet 121 (the distance between the two straight sides 122) to the length of the diameter of the support surface 11 is between 1/2 and 1/4, and the ratio of the length of the primary air inlet 121 (the length of the two circular-arc sides 123 taken from the center line CL 1) to the length of the diameter of the support surface 11 is between 3/5 and 9/10, i.e. the primary air inlet 121 is elongated. The primary air reaching the chamber 12 is formed with planar side walls 124 corresponding to the two straight sides 122, circular arc walls 125 corresponding to the two circular arc sides 123, and bottom surfaces 126 connecting the planar side walls 124 and the circular arc walls 125. The planar side walls 124 and the circular arc walls 125 are substantially perpendicular to the support surface 11 and the bottom surface 126 is substantially parallel to the support surface 11.

In this way, the primary air reaches the chamber 12 in a regular shape, and the bottom cup 10 is easy to mold and manufacture.

The bottom cup 10 is formed with a first mounting through hole 13 and a second mounting through hole 14 downward from the support surface 11 in the height direction of the bottom cup 10. The centers of the first and second mounting through holes 13 and 14 are symmetrical about the center line CL1 and are located on both sides of the primary air reaching the chamber 12, and a straight line passing through the centers of the first and second mounting through holes 13 and 14 is near the center position of the circle where the support surface 11 is located.

The bottom cup 10 further includes an outer circumferential side 15 and a nozzle seat 16 formed through the outer circumferential side 15 and the corresponding arcuate wall 125 at a location where the arcuate wall 125 is adjacent the bottom surface 126. The nozzle holder 16 has a through-hole tubular shape penetrating the outside of the base cup 10 and the primary air to reach the chamber 12.

The nozzle holder 16 is formed with an external connection portion 161, a communication portion 162, and a nozzle attachment portion 163 which communicate with each other in this order from the outside toward the inside of the primary air reaching chamber 12. The outer connection 161 is located outside the bottom cup 10 and the nozzle mounting 163 is located in the primary air arrival chamber 12. The outer connecting portion 161 is substantially coaxial with the communicating portion 162, and the center line CL2 of the outer connecting portion 161 and the communicating portion 162 is substantially parallel to the supporting surface 11 and the orthographic projection on the supporting surface 11 falls on the center line CL1, the outer contour of the outer connecting portion 161 is a hexahedral cylinder, the inner contour is a circular through hole, and the inner contour of the communicating portion 162 is a circular through hole and has a smaller diameter than the inner contour of the outer connecting portion 161. The front projection of the center line CL3 of the nozzle mounting portion 163 on the support surface 11 also falls on the center line CL1, but is disposed obliquely with respect to the center line CL2 of the outer connecting portion 161 and the communicating portion 162. The inner contour of the nozzle mounting part 163 is formed with an internal thread (not shown).

Referring to fig. 7, in the present embodiment, the nozzle 20 has a substantially through-hole tubular shape, and includes a head 21 and a connecting portion 22 extending from the head 21 substantially coaxially, wherein the head 21 includes a substantially regular hexagonal cylindrical outer contour, and the outer contour of the connecting portion 22 corresponds to the inner contour of the nozzle mounting portion 163, for example, the outer contour of the connecting portion 22 is slightly larger than the inner contour of the nozzle mounting portion 163. The connecting portion 22 includes an outer contour which is substantially cylindrical and provided with an external thread, and the nozzle 20 is formed with a tapered hole 23 extending from an end of the connecting portion 22 away from the head portion 21 in a direction of a center line CL4 of the nozzle 20, formed through the connecting portion 22 and the head portion 21, the tapered hole 23 being formed with a nozzle inlet 24 at the connecting portion 22 and a nozzle outlet 25 at the head portion 21.

Referring to fig. 8 to 10, in the present embodiment, the distributor 30 may be made of cast iron, cast aluminum, cast copper, or the like, and includes a body 31 and an ejector tube 32.

The body 31 includes a substantially disk-shaped partition 311, and the partition 311 includes an upper surface 3111 and a lower surface 3112 opposite the upper surface 3111. When the burner 100 may be horizontally placed as shown in fig. 4, the upper surface 3111 is positioned at the top of the partition 311 and is substantially parallel to the horizontal direction, and the lower surface 3112 is positioned at the lower portion of the partition 311 and is substantially parallel to the horizontal direction.

Upper surface 3111 includes a substantially circular outer edge 3113 and an inner edge 3114, the inner edge 3114 includes a first inner edge 3115 that is substantially a superior arc segment and a second inner edge 3116 that is connected to the first inner edge 3115 and is substantially a inferior arc segment. The circle of the first inner edge 3115 is substantially concentric with the circle of the outer edge 3113, and the circle of the second inner edge 3116 is inscribed within the circle of the outer edge 3113. The diameter of the circle in which the outer edge 3113 is located is larger than the diameter of the circle in which the first inner edge 3115 is located, and the diameter of the circle in which the first inner edge 3115 is located is larger than the diameter of the circle in which the second inner edge 3116 is located. The center of the circle in which the outer edge 3113 is located, the center of the circle in which the first inner edge 3115 is located, and the center of the circle in which the second inner edge 3116 is located substantially fall on the center line CL5 of the outer edge 3113.

In this way, the inner edge 3114 is shaped like a fish mouth, which can enhance the ornamental appearance of the burner 100.

The baffle 311 forms two inner annular secondary air passages 3117 within the inner edge 3114, leaving behind a curtain 3118. The two inner ring secondary air passages 3117 are located on both sides of the center line CL5, respectively, and are symmetrical about the center line CL 5. The inner ring secondary air passage 3117 is substantially circular sector-shaped and is aligned with a portion of the first inner edge 3115 and a portion of the second inner edge 3116. The arc length of the inner ring secondary air passage 3117 corresponds to an angle between 60 degrees and 90 degrees. As such, the shield 3118 includes a body portion 31181 and a tail portion 31182.

The body 31181 is generally circular and is connected to the second inner edge 3116. The body 31181 is formed with first and second positioning through holes 31183 and 31184 corresponding to the first and second mounting through holes 13 and 14, respectively, that is, centers of the first and second positioning through holes 31183 and 31184 are located on both sides of the center line CL5 and symmetrical with respect to the center line CL5, and a straight line passing through the centers of the first and second positioning through holes 31183 and 31184 is close to a center position of a circle where the partition 311 is located.

The tail 31182 connects the body portion 31181 and the first inner edge 3115, and the dimension itself portion 31181 in a direction perpendicular to the center line CL5 gradually increases toward the first inner edge 3115.

In this way, the shielding portion 3118 is shaped like a fish, for example, the body portion 31181 resembles a fish, the tail portion 31182 resembles a fish tail, and the first and second positioning through holes 31183 and 31184 resemble fish eyes, which can enhance the overall appearance.

The body 31 includes an outer edge sidewall 312 extending upwardly from the outer edge 3113 and an inner edge sidewall 313 extending upwardly from the inner edge 3114. The inner edge side walls 313 include a first inner edge side wall 3131 extending upwardly from the first inner edge 3115 and a second inner edge side wall 3132 extending upwardly from the second inner edge 3116. The outer edge sidewall 312 and the inner edge sidewall 313 are of equal height and together define a mixed gas tank 314. Correspondingly, the mixed gas tank 314 includes a first mixed gas tank 3141 defined by the outer edge side wall 312 and the first inner edge side wall 3131, and a second mixed gas tank 3142 defined by the outer edge side wall 312 and the second inner edge side wall 3132. The first mixed gas tank 3141 is substantially annular, and the second mixed gas tank 3142 is substantially circular, and both ends of the first mixed gas tank 3141 communicate with the second mixed gas tank 3142.

The top of the outer edge sidewall 312 is formed with a plurality of first flame ports 3121, the first flame ports 3121 being distributed along the circumferential direction of the outer edge sidewall 312 and penetrating the outer edge sidewall 312 in the radial direction of the outer edge sidewall 312. The top of the first inner edge sidewall 3131 is formed with a plurality of second fire holes 31311, and the second fire holes 31311 are distributed along the circumferential direction of the first inner edge sidewall 3131 and penetrate the first inner edge sidewall 3131 in the radial direction of the first inner edge sidewall 3131. The top of the second inner edge sidewall 3132 is formed with a plurality of third fire holes 31321, and the third fire holes 31321 are distributed along the circumferential direction of the second inner edge sidewall 3132 and penetrate the second inner edge sidewall 3132 in the radial direction of the second inner edge sidewall 3132. The first flame ports 3121 are sized larger than the second flame ports 31311 and the third flame ports 31321 are sized larger than the first flame ports 3121.

Generally, outer edge 3113 is used to form an outer ring flame, as the primary fire for the cooking process, a larger amount of flame is required, inner edge 3114 is used to form an inner ring flame, for assisting the outer ring flame, so the size of the fire ports of outer edge 3113 can be adjusted to be larger than the size of the fire ports of inner edge 3114, but since the arc length of second inner edge 3116 is shorter and near the center of outer edge 3133, the size of the fire ports of second inner edge 3116 can be adjusted to be larger than the size of the fire ports of outer edge 3113 for more uniform heating of the interior and exterior of the cooking appliance. Thus, the size of the fire hole can be adjusted according to different positions, which is further beneficial to the internal and external heating of the cooking utensil to be more uniform.

The ejector tube 32 may be made of cast iron, cast aluminum, cast copper or the like and is substantially tubular. The injection pipe 32 is formed with a gas inlet 321 and a gas outlet 322 communicating with the gas inlet 321, and the injection pipe 32 is used for mixing the fuel gas and the primary air entered from the gas inlet 321 and ejecting the mixed gas from the gas outlet. The gas outlet 322 communicates with the mixed gas tank 314 for supplying the mixed gas to the mixed gas tank 314.

In this embodiment, the ejector tube 32 is fixedly connected to the main body 31. For example, the injection pipe 32 and the body 31 may be manufactured by an integrally formed process, and the injection pipe 32 and the body 31 may be formed into a pipe hole of the injection pipe 32 by a core pulling process after integrally formed by a mold. The integrally formed ejector tube 32 and body 31 have good sealing properties, and can reduce the risk of air leakage of the burner 100.

It will be appreciated that the ejector tube 32 and the body 31 may be manufactured by a non-integral process, for example, by welding after the ejector tube 32 and the body 31 are formed, which is not limited herein.

Specifically, the ejector tube 32 is fixedly connected to the partition 311 and penetrates the partition 311 to communicate with the mixed gas tank 314, or alternatively, the gas outlet 322 is formed in the upper surface 3111. When the burner 100 is horizontally placed as shown in fig. 4, the injection pipe 32 is inclined with respect to the horizontal direction, or the injection pipe 32 is inclined with respect to the partition 311 and fixedly connected. The inclination angle of the injection pipe 32 with respect to the partition 311 is substantially identical to the inclination angle of the center line CL3 of the nozzle mounting portion 163 with respect to the support surface 11, and is between 25 and 60 degrees, and the injection pipe 32 mounted behind the bottom cup 10 is disposed coaxially with the nozzle 20.

The forward projection of the centerline CL6 of the ejector 32 on the upper surface 3111 is substantially coincident with the centerline CL5, and the forward projection of the ejector 32 on the upper surface 3111 is substantially symmetrical about the centerline CL 5. The front projection of the gas inlet 321 on the upper surface 3111 is positioned within the tail 31182, and the gas outlet 322 is positioned within the second mixed gas tank 3142, is elliptical in shape, and has a major axis that substantially falls on the center line CL 5.

The eductor tube 32 includes a first tube segment 323, a second tube segment 324, and a third tube segment 325 that are substantially coaxial, interconnected, in communication, from the gas inlet 321 to the gas outlet 322. The first pipe section 323 is formed with a gas inlet 321 at one end thereof remote from the second pipe section 324, and gradually becomes smaller in inner diameter toward the ejector pipe 32. The inner diameter of the second tube segment 324 is substantially fixed. The inner diameter of the third pipe section 325 gradually increases toward the outside of the injection pipe 32 and the length distance along the centerline CL6 is greater than the length distance of the second pipe section 324.

The distributor 30 further includes a spacing portion 33 extending downward from the lower surface 3112 and a spacing portion 34 extending downward from the spacing portion 33. The spacer 33 is configured to space the support surface 11 from the lower surface 3112 and includes a bearing surface 331 corresponding to the support surface 11, the bearing surface 331 being spaced apart from the lower surface 3112 and substantially parallel to each other, the bearing surface 331 being configured to limit downward movement of the distributor 30 in a vertical direction. The stopper 34 serves to limit the movement of the distributor 30 in the horizontal direction on the support surface 11.

In this embodiment, the spacer 33 includes a spacer block 332 extending downwardly from the corresponding tail 31182 and a tab 333 extending from the opposite side of the third tube segment 325 from the body 31. The limiting portion 34 includes a first fixture block 341 extending downward from the bearing surface 331 of the corresponding spacer block 332 and a second fixture block 342 extending downward from the bearing surface 331 of the corresponding bump 333, the first fixture block 341 and the second fixture block 342 are matched with the shape of the primary air inlet 121, and the orthographic projection of the first fixture block 341 and the second fixture block 342 on the upper surface 3111 is substantially symmetrical about the center line CL 5.

The first latch 341 includes a first limit side 3411 away from the second latch 342 and engaging the circular arc wall 125 and two first limit planes 3412 engaging the two planar side walls 124. The second latch 342 includes a second limiting side 3421 away from the first latch 341 and cooperating with the circular arc wall 125. The width of the first clamping block 341 (the distance between the first limiting planes 3412 on both sides) is matched with the width of the primary air inlet 121 (the distance between the two straight sides 122), and the width of the first clamping block 341 is slightly smaller than the width of the primary air inlet 121.

Referring also to fig. 11, in the present embodiment, the fire cover 40 is substantially annular in shape and includes a fire cover outer contour 41 corresponding to the outer edge 3113 and a fire cover inner contour 42 corresponding to the inner edge 3114.

When assembling the parts of the burner 100, the nozzle 20 is fixed to the nozzle holder 16 by the male screw of the connection part 22 and the female screw of the nozzle mounting part 163, then the ignition needle 50 and the thermocouple 60 are respectively mounted in the first mounting through hole 13 and the second mounting through hole 14 of the support surface 11, the distributor 30 is positioned on the ignition needle 50 and the thermocouple 60 through the first positioning through hole 31183 and the second positioning through hole 31184 respectively and then mounted on the bottom cup 10, and the injection pipe 32 is positioned in the primary air reaching chamber 12, and finally the fire cover 40 is mounted on the distributor 30 and covers the mixed gas tank 314.

Wherein the first fixture block 341 and the second fixture block 342 are nested in the primary air reaching chamber 12, the nozzle 20 is opposite to the air inlet 321, the partition 33 separates the lower surface 3112 from the supporting surface 11, so that air can enter the primary air reaching chamber 12 from the gap 70 (see fig. 12 and 13) between the lower surface 3112 and the supporting surface 11, and can reach the outside of the inner edge sidewall 313 through the secondary air channel 3117 to provide air to the fire hole, and the shielding portion 3118 completely shields the primary air reaching the primary air inlet 121 of the chamber 12.

In the present embodiment, the ignition needle 50 and the thermocouple 60 are disposed in the vicinity of the middle of the burner 100, and thus, it is advantageous to prevent the user from damaging the ignition needle 50 and the thermocouple 60 due to a collision that may occur during use.

The ejector tube 32 is communicated with the second mixed gas tank 3142 of the body 31, so that the ejector tube 32 can accelerate the flow rate of gas and improve the guiding rate of gas by utilizing the venturi effect principle, and the mixed gas is rapidly conveyed into the second mixed gas tank 3142. In addition, since the radial width of the second mixed gas tank 3142 is greater than the radial width of the first mixed gas tank 3141, the air flow ejected from the ejector pipe 32 can be buffered when the burner 100 is operated, which is advantageous in reducing the impact on the flame of the second mixed gas tank 3142 and making the flame of the body 31 more uniform.

The flame divider 30 is positioned at the ignition needle 50 and the thermocouple 60 through the first positioning through-hole 31183 and the second positioning through-hole 31184 of the shielding portion 3118 and is mounted on the base cup 10. In this way, the positioning member is not separately provided, but the existing parts of the burner 100 are used for auxiliary positioning, which is beneficial to reducing the number of parts of the burner 100. In addition, the shielding part 3118 is located above the primary air inlet 121, and can effectively shield sundries from falling into the primary air reaching the chamber 12, avoid blockage of the primary air reaching the chamber 12, and facilitate easy cleaning of the burner 100 after use. Since the body 31181 in the shielding portion 3118 is mainly used for shielding sundries and positioning, the thickness of the body 31181 can be suitably smaller than that of the partition 311 to save material.

The distributor 30 is arranged on the support surface 11 of the bottom cup 10 by means of a spacer 33. Thus, the spacer 33 has a simple structure and is integrally provided with the distributor 30, which is advantageous in reducing the number of parts of the burner 100, shortening the assembly time, and improving the production efficiency. In addition, since the arc length of the spacer 332 is greater than that of the bump 333, the two ends of the spacer 332 and the center of the bump 333 form a stable triangle structure, so that the bottom cup 10 can more stably support the distributor 30, and the size of the bump 333 can be reduced, and the material cost can be reduced.

The first clamping block 341 and the second clamping block 342 are nested in the primary air reaching chamber 12, the first limiting side 3411 of the first clamping block 341 limits the movement of the distributor 30 on the bottom cup 10 leftwards in the horizontal direction, the first limiting planes 3412 on both sides of the first clamping block 341 respectively limit the movement of the distributor 30 on the bottom cup 10 forwards and backwards in the horizontal direction, and the first limiting planes 3412 on both sides of the first clamping block 341 also limit the rotation of the distributor 30 in the vertical direction. The second limiting side 3421 of the second latch 342 limits the movement of the distributor 30 in the horizontal direction to the right on the bottom cup 10.

In this way, the first clamping block 341 and the second clamping block 342 jointly limit the movement of the distributor 30 on the bottom cup 10 along the horizontal direction, and the first clamping block 341 and the second clamping block 342 are simple in structure and are integrally arranged with the distributor 30, so that the number of parts of the combustor 100 is reduced, the assembly time is shortened, and the production efficiency is improved. In addition, the first clamping block 341 and the second clamping block 342 are matched with the primary air inlet 121 of the primary air reaching the cavity 12, and other limiting grooves are not required to be rearranged on the bottom cup 10, so that the structure of the bottom cup 10 is simplified, the process steps of the bottom cup 10 in manufacturing are reduced, and the production cost is reduced.

It should be noted that "front" and "rear" in fig. 2 correspond to directions of the vertical paper surface facing inward and the vertical paper surface facing outward in fig. 4, respectively, and "left" and "right" correspond to directions of the horizontal direction to the left and the horizontal direction to the right in fig. 4, respectively.

In summary, when the burner 100 is operated, the nozzle holder 16 is connected to a gas source (not shown) through the external connection portion 161, the gas source sprays gas through the gas inlet 321 of the nozzle 20 opposite to the injection pipe 32, the gas flow causes negative pressure in the region of the injection pipe 32 near the second pipe section 324, air in the primary air reaching the chamber 12 is sucked into the injection pipe 32, the gas and the air are mixed in the injection pipe 32 and then sprayed out from the gas outlet 322, the sprayed mixed gas is filled in the mixed gas groove 314 of the body 31 and sprayed out from the fire hole of the body 31, and after being ignited electronically by the ignition needle 50, the mixed gas burns to form a flame ring for a user to cook food.

In the process of injecting fuel gas from the nozzle 20 to the injection pipe 32, after the air in the primary air reaching the chamber 12 enters the injection pipe 32 under the action of the fuel gas flow, external ambient air can enter the primary air reaching the chamber 12 through a part of the gap 70 to be supplied, and the other part of the air passes through the inner ring secondary air channel 3117 to supply the fire hole opening of the inner edge side wall 313, and the fire hole opening of the outer edge side wall 312 is directly supplied through ambient air, so that the whole burner 100 continuously works. The thermocouple 60 can interrupt the delivery of fuel gas when the burner 100 is abnormally extinguished, avoiding danger.

When the gas and air in the burner 100 are insufficiently mixed, more carbon monoxide is easily generated when the mixed gas is burned, and the thermal efficiency is low, which makes it difficult to satisfy the requirements of the burner 100 with high power. To improve the overall performance of the burner 100, when the burner 100 according to the embodiment of the present invention is horizontally placed (as shown in fig. 4), for example, the bottom cup 10 of the burner 100 is horizontally placed in a burner rim (not shown) of a gas range, and the injection pipe 32 is inclined as compared with the horizontal direction.

So, through the slope setting injection pipe 32, can prolong the length of injection pipe 32 under the unchangeable circumstances of combustor 100 height and transverse dimension, the injection ability of reinforcing injection pipe makes gas and air mix more abundant in injection pipe 32 to make gas combustion more abundant, the content of carbon monoxide is lower, improves the thermal efficiency of combustor 100 effectively, is favorable to being applied to high-power combustor 100.

In this embodiment, the angle between the ejector 32 and the horizontal is 26 ° -50 °.

Specifically, under the condition that the height and the transverse dimension of the burner 100 are unchanged, if the included angle between the injection pipe 32 and the horizontal direction is too large, the length of the injection pipe 32 is shorter, the injection distance of the injection pipe 32 is limited, the injection effect is poor, and the requirement of the high-power burner 100 is difficult to meet; or in the case that the length of the injection pipe 32 and the height of the burner 100 are not changed, if the included angle between the injection pipe 32 and the horizontal direction is too small, the lateral dimension of the burner 100 is too large, which is not beneficial to the miniaturization of the burner 100.

Referring to Table 1, table 1 shows the relationship between the angle between the injection pipe 32 and the horizontal direction and the increasing ratio of the radial length of the gas outlet 322. Wherein the magnitude of the included angle and the increasing proportion are in a negative correlation, and the increasing proportion increases exponentially as the included angle is smaller.

TABLE 1

If the included angle between the injection pipe 32 and the horizontal direction is too small, the longer the radial length of the gas outlet 322 increases exponentially, even if the radial dimension of the body 31 or the lateral dimension of the burner 100 is exceeded, which tends to increase manufacturing difficulties; or under the condition that the length of the injection pipe 32 and the size of the orifice are not changed, if the included angle between the injection pipe 32 and the horizontal direction is too small, the radial length of the gas outlet 322 is longer and grows exponentially, so that the radial size of the body 31 needs to be increased to the same extent to ensure that the gas outlet 322 is positioned in the mixed gas tank 314, however, the oversized body 31 is not beneficial to the miniaturization of the combustor 100, and meanwhile, the manufacturing cost is increased.

Therefore, when the included angle between the injection pipe 32 and the horizontal direction is 26 ° -50 °, the manufacturing difficulty and the production cost of the burner 100 can be reduced while the burner 100 is miniaturized. In addition, since the ejector tube 32 is communicated with the second mixed gas tank 3142 of the main body 31, after the mixed gas is ejected from the gas outlet 322, the mixed gas is liable to impact on the flame near the gas outlet 322, and the longer the radial length of the gas outlet 322 is, the smaller the impact force of the ejected mixed gas is, so by properly adjusting the inclination angle of the ejector tube 32, the radial length of the gas outlet 322 can be increased, which is beneficial to more uniform flame of the main body 31.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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 invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

To further assist in illustrating the spirit of the invention, some embodiments of the invention are illustrated below.

In certain embodiments, the burner 100 of the present embodiment includes a distributor 30, the distributor 30 includes a body 31 and an injection pipe 32, the body 31 is formed with a mixed gas tank 314, the injection pipe 32 is disposed below the body 31 and is in communication with the mixed gas tank 314, when the burner 100 is horizontally placed, the injection pipe 32 is disposed obliquely with respect to the horizontal direction, and an angle between the injection pipe 32 and the horizontal direction is 26 ° to 50 °.

Thus, the burner 100 according to the embodiment of the invention can extend the length of the injection pipe 32 under the condition that the height and the transverse dimension of the burner 100 are unchanged, enhance the injection capability of the injection pipe 32, and enable the fuel gas and the air to be mixed more fully in the injection pipe 32, so that the fuel gas burns more fully, the content of carbon monoxide is lower, the heat efficiency of the burner 100 is effectively improved, the burner is beneficial to being applied to a high-power burner, and the proper inclination angle of the injection pipe 32 can reduce the manufacturing difficulty and the production cost of the burner 100 under the condition that the burner 100 is beneficial to miniaturization.

In certain embodiments, the body 31 comprises a baffle 311, the baffle 311 comprising a substantially circular upper surface 3111 and substantially circular outer and inner edges 3113, 3114, the outer and inner edges 3113, 3114 being symmetrical about a diameter of the upper surface 3111, the inner edge 3114 comprising a substantially circular first inner edge 3115 and a substantially circular second inner edge 3116 connected to the first inner edge 3115, the circle of the first inner edge 3115 being concentric with the circle of the outer edge 3113, the circle of the second inner edge 3116 being inscribed with the circle of the outer edge 3113; the body 31 includes an outer edge sidewall 312 extending upward from the outer edge 3113 and an inner edge sidewall 313 extending upward from the inner edge 3114, the inner edge sidewall 313 includes a first inner edge sidewall 3131 extending upward from the first inner edge 3115 and a second inner edge sidewall 3132 extending upward from the second inner edge 3116, and the mixed gas tank 314 includes a first mixed gas tank 3141 surrounded by the outer edge sidewall 312 and the first inner edge sidewall 3131 and a second mixed gas tank 3142 surrounded by the outer edge sidewall 312 and the second inner edge sidewall 3132.

In this manner, the second mixed gas tank 3142 increases the volume of the mixed gas tank 314, facilitating more thorough mixing of the mixed gases.

In certain embodiments, the eductor 32 is in communication with the second mixed gas tank 3142.

In this way, since the radial width of the second mixed gas tank 3142 is greater than the radial width of the first mixed gas tank 3141, the air flow ejected from the ejector pipe 32 can be buffered when the burner 100 is operated, which is beneficial to reducing the impact on the flame of the second mixed gas tank 3142 and making the flame of the distributor 30 more uniform.

In certain embodiments, the distributor 30 includes a plurality of first flame ports 3121 formed at the top of the outer edge side wall 312, a plurality of second flame ports 31311 formed at the top of the first inner edge side wall 3131, and a plurality of third flame ports 31321 formed at the top of the second inner edge side wall 3132.

In this way, the distributor 30 forms an inner and outer ring flame, which is advantageous for more uniform heating of the inside and outside of the cooking appliance.

In certain embodiments, the size of the first flame port 3121 is greater than the size of the second flame port 31311 and the size of the third flame port 31321 is greater than the size of the first flame port 3121.

Thus, the size of the fire hole can be adjusted according to different positions, which is further beneficial to the internal and external heating of the cooking utensil to be more uniform.

In certain embodiments, the body 31 includes a shield 3118 located within the inner edge 3114, the shield 3118 and the inner edge 3114 forming an inner ring secondary air channel 3117 on both sides.

In this way, the external air can be supplied to the fire hole openings of the inner edge 3114 through the inner ring secondary air passage 3117, and the shielding portion 3118 can effectively shield the sundries from falling into the primary air reaching the chamber 12, avoiding blockage of the primary air reaching the chamber 12.

In some embodiments, the burner 100 includes the bottom cup 10, the ignition needle 50 and the thermocouple 60, the bottom cup 10 includes the supporting surface 11 and the primary air reaching chamber 12 opened downward from the supporting surface 11 along the height direction of the bottom cup 10, the supporting surface 11 is provided with the first mounting through hole 13 and the second mounting through hole 14, the ignition needle 50 and the thermocouple 60 are respectively mounted on the first mounting through hole 13 and the second mounting through hole 14, the body 31 includes the first positioning through hole 31183 and the second positioning through hole 31184 located at the shielding portion 3118, and the first positioning through hole 31183 and the second positioning through hole 31184 are respectively positioned at the ignition needle 50 and the thermocouple 60 to enable the distributor 30 to be mounted on the bottom cup 10 and the injection pipe 32 to be located in the primary air reaching chamber 12.

In this manner, it is advantageous to prevent a user from damaging the ignition needle 50 and the thermocouple 60 due to a possible collision during use, and to use existing parts of the burner 100 for auxiliary positioning, thereby being advantageous to reduce the number of parts of the burner 100.

In certain embodiments, the distributor 30 comprises a spacer 33, the spacer 33 comprising a spacer block 332 provided on the shield 3118 and a tab 333 provided on the ejector tube 32, the support surface 11 supporting the distributor 30 via the spacer block 332 and tab 333 and forming a gap 70 with the distributor 30 on both sides.

In this way, the spacer 33 is integrally provided with the distributor 30, which is advantageous in reducing the number of parts of the burner 100, shortening the assembly time, and improving the production efficiency. In addition, the void 70 facilitates the replenishment of primary air to the chamber 12 by ambient air through the void 70.

In certain embodiments, the distributor 30 includes a stop 34, the stop 34 including a first latch 341 disposed on the spacer 332 and a second latch 342 disposed on the ejector 32, the first latch 341 and the second latch 342 collectively defining movement of the distributor 30 in a horizontal direction on the bottom cup 10.

Thus, the limiting part 34 and the distributor 30 are integrally arranged, which is beneficial to reducing the number of parts of the combustor 100, shortening the assembly time and improving the production efficiency.

In certain embodiments, the burner 100 includes a nozzle 20 positioned within the primary air arrival chamber 12, the base cup 10 includes a nozzle mount 16, and the nozzle 20 is mounted to the nozzle mount 16 and is disposed coaxially with the ejector tube 32.

In this manner, the nozzle 20 is advantageously directed against the eductor tube 32 to enhance eductor capacity.

Claims

1. A burner comprising an distributor, the distributor comprising:

the injection pipe is arranged below the body and communicated with the mixed gas tank, and when the burner is horizontally placed, the injection pipe is obliquely arranged compared with the horizontal direction, and an included angle between the injection pipe and the horizontal direction is 26-50 degrees;

the body comprises a partition plate, the partition plate comprises a basically circular upper surface, a basically circular outer edge and an inner edge, the outer edge and the inner edge are symmetrical with respect to one diameter of the upper surface, the inner edge comprises a basically circular first inner edge and a basically circular second inner edge connected with the first inner edge, the circle of the first inner edge is concentric with the circle of the outer edge, and the circle of the second inner edge is inscribed with the circle of the outer edge;

the body comprises an outer edge side wall extending upwards from the outer edge and an inner edge side wall extending upwards from the inner edge, the inner edge side wall comprises a first inner edge side wall extending upwards from the first inner edge and a second inner edge side wall extending upwards from the second inner edge, and the mixed gas tank comprises a first mixed gas tank surrounded by the outer edge side wall and the first inner edge side wall and a second mixed gas tank surrounded by the outer edge side wall and the second inner edge side wall;

The injection pipe is communicated with the second mixed gas tank;

the distributor includes a plurality of first fire ports formed on top of the outer edge side wall, a plurality of second fire ports formed on top of the first inner edge side wall, and a plurality of third fire ports formed on top of the second inner edge side wall.

2. The burner of claim 1, wherein the first fire orifice has a size that is larger than the second fire orifice and the third fire orifice has a size that is larger than the first fire orifice.

3. The burner of claim 1, wherein the body includes a shield located within the inner edge, the shield and the inner edge forming two-sided inner ring secondary air passages.

4. A burner as claimed in claim 3, wherein the burner comprises a bottom cup, an ignition needle and a thermocouple, the bottom cup comprises a support surface and a primary air arrival chamber opened downwards from the support surface along the height direction of the bottom cup, the support surface is provided with a first mounting through hole and a second mounting through hole, the ignition needle and the thermocouple are respectively mounted in the first mounting through hole and the second mounting through hole, the body comprises a first positioning through hole and a second positioning through hole which are positioned at the shielding part, and the first positioning through hole and the second positioning through hole are respectively positioned at the ignition needle and the thermocouple, so that the distributor is mounted at the bottom cup and the injection pipe is positioned in the primary air arrival chamber.

5. The burner of claim 4, wherein the distributor comprises a spacer comprising a spacer block disposed on the shield and a tab disposed on the injector tube, the support surface supporting the distributor via the spacer block and the tab and forming a gap with the distributor on both sides.

6. The burner of claim 5, wherein the distributor includes a limit portion comprising a first fixture block disposed on the spacer block and a second fixture block disposed on the ejector tube, the first fixture block and the second fixture block collectively defining movement of the distributor in the horizontal direction on the bottom cup.

7. The burner of claim 4, wherein the burner includes a plurality of nozzles located in the primary air arrival chamber, and wherein the base cup includes a plurality of nozzle holders, the plurality of nozzles being mounted to the plurality of nozzle holders and being disposed coaxially with the plurality of ejector tubes, respectively.