CN1306177A - Gas burner head - Google Patents

Abstract

A gas burner has a burner body and a burner cover detachably mounted on the round head of the burner body. The hood cover includes: a supply channel through which secondary air is supplied; and a circular surface portion for the supply channel and formed with a plurality of flame openings. The flame ports are arranged radially towards their center so that the mixed gas burns with the assistance of the secondary air in the supply channel, whereby a flame is generated through each flame port. Each flame port has one end and the other end opposite to the end in the radial direction, so that one end of each flame port protrudes upward relative to the other end.

Description

gas burner

The invention relates to a gas burner installed in a gas cooking appliance.

As shown in FIG. 17, a conventional gas burner has a burner body 51 having a top surface on which a burner cover 52 is mounted. The gas burner burns an outer flame 53 and an inner flame 54 for heating for cooking.

At present, in order to cope with the demand for improving the heating efficiency of the gas burner and saving its energy, a gas burner has been developed, as shown in FIG. The hood 52 is also provided with a flame port 55 from which the flame is ejected upwards.

However, in the structure of the conventional gas burner shown in FIG. 18, since the burner cover 2 is forged, and the burner port 55 is made by cutting the burner cover 52, it is difficult to accurately The burner cover 52 is cut, thereby increasing the manufacturing cost of the gas burner.

In addition, in the structure of the conventional gas burner shown in FIG. 18, on the combustion side, it is difficult to pass a large amount of secondary air through the secondary air supply passage.

The present invention solves the above-mentioned problems. Therefore, the object of the present invention is to provide a gas burner that is easy to manufacture, has good burner performance and low cost, and can improve heating efficiency and further save energy.

To achieve this object, according to the invention, there is provided a gas burner head comprising a plurality of burners each having a cross-section with one end and the other, shaped radially towards the center of the burner hood, the cross-section of which is One end protrudes upwards relative to the other end.

In addition, according to the present invention, one end and the other end of each flame port are formed with flat portions so that the shape of each flame port makes the sizes of these flame ports uniform.

According to this structure, since the flame flows obliquely upward through each flame port, the force of the flame ejected in the circumferential direction and the force of the heat discharged upward along the bottom of the pan cause a swirl flow, so that the secondary air can be supplied through the center The channel draws in a large amount of secondary air, so that good combustion can be obtained.

In addition, since the flames flow obliquely upward through each burner port, the bottom of the pan can be brought closer to the burner, thereby improving heating efficiency and further saving energy.

Other objects and aspects of the present invention will become apparent after describing embodiments in conjunction with the accompanying drawings, in which:

Fig. 1 is a cross-sectional view of a gas burner according to a first embodiment of the present invention;

Fig. 2 is a top view of the burner cover of the first embodiment of the present invention shown in Fig. 1;

Fig. 3 is a side sectional view of the burner cover of the first embodiment of the present invention shown in Fig. 1;

Figure 4 is a sectional view of the present invention taken along line IV-IV in Figure 2;

Fig. 5 is a cross-sectional view of the burner hood of the gas burner according to the second embodiment of the present invention, taken along the line IV-IV in Fig. 2;

Fig. 6 is a top view of the burner cover of the gas burner according to the third embodiment of the present invention;

Fig. 7 is a cross-sectional view of the burner cover flame port of the gas burner cut along the line VII-VII in Fig. 6;

Fig. 8 is a side sectional view of the stove cover of the fifth embodiment of the present invention;

Fig. 9 is a side sectional view of a burner cover according to the sixth embodiment of the present invention;

Figure 10 is a partially enlarged view of the caulk portion of the burner cover shown in Figure 9 and the ring of the gas burner;

Fig. 11 is a side sectional view of the stove cover of the seventh embodiment of the present invention;

Fig. 12 is a top view of a gas burner according to an eighth embodiment of the present invention;

FIG. 13 is a top view of the hood of the ninth embodiment of the present invention, in which the temperature sensor 24 is housed;

Fig. 14 is a side sectional view of the burner cover shown in Fig. 13;

Fig. 15 is a top view of the burner cover of the gas burner according to the tenth embodiment of the present invention;

Fig. 16 is a side sectional view of the burner cover shown in Fig. 15;

Figure 17 is a side sectional view of a conventional gas burner; and

Fig. 18 is a side sectional view of another conventional gas burner.

According to one aspect of the present invention, there is provided a gas burner, which comprises: a burner body having a circular head with an opening and a hollow inner cavity on its top surface, the mixed gas is supplied into the hollow In the inner cavity; and a burner cover detachably installed on the round head, the burner cover includes: a device for forming a secondary air supply channel through which the secondary air is supplied; and a supply for the secondary air A circular surface portion for the supply channel and formed with a plurality of flame ports arranged radially towards the center of the circular surface portion and communicating with the hollow interior of the circular head so that the mixture flowing from each flame port The combustion gas is combusted with the assistance of the secondary air in the secondary air supply channel, whereby a flame is produced through each flame port, each flame port having one end and the other end opposite to the end in the radial direction of the hood , one end of each flame port protrudes upward relative to the other end.

With this aspect of the invention, since the flame flows obliquely upward along the circumference, swirling flow is caused, so that a large amount of secondary air can be sucked in to supply it to the flame port, whereby the gas furnace can be operated according to the large amount of secondary air. The head burns well.

In addition, a temperature sensor for detecting the temperature of the object to be burned can also be installed. In addition, the gas burner can be brought close to the bottom of the burnt object, thereby improving the heating efficiency of the gas burner and saving its energy.

In a preferred embodiment of this aspect, one end along the radial direction of each flame port has a curved portion extending obliquely upward from the circular surface portion of the burner cover in the circumferential direction and a portion parallel to the circular surface from the curved portion. Extended planar section.

According to this preferred embodiment of this aspect, the flame stably flows obliquely from the mouth of the flame.

In a preferred embodiment of this aspect, the flame openings are arranged at equal intervals along the circumferential direction, and the burner cover is made by pressing.

According to this preferred embodiment of this aspect, the planar portions can be placed on a mold (press die) for precise press work so that a substantially uniform flame port width can be produced.

In a preferred embodiment of this aspect, the gas burner head further includes a plurality of protrusions formed on the circular surface portion, these protrusions are radially arranged at equal intervals along the circumferential direction, and each protrusion points to the burner head cover. In the central part, flame ports are respectively formed on the protrusions, and the mixed gas flows obliquely upward through these flame ports so as to generate flames through each flame port.

According to this preferred embodiment, the secondary air can be supplied through the space inside the protrusion. When the gas burner is being used and the heated pan is placed above the burner cover by the tripod, when the soup overflows the pan This space allows soup that overflows the pan to flow through the space when the pan is in place.

In a preferred embodiment of this aspect, the entire surface of the hood is treated with a refractory metal finish for coloring.

According to this preferred embodiment, the material to be pressed, such as stainless material, can be used, and various metal finishing means can be applied to the surface of the burner cover, so that it is easy to design the burner cover of the gas burner.

In a preferred embodiment of this aspect, the round head is provided with a cylindrical side wall in which the hollow interior is provided, the hood is provided with a peripheral portion mounted on the cylindrical side wall of the round head, The gas burner also includes a ring member arranged around the cylindrical outer peripheral portion of the burner cover, so that the cylindrical outer peripheral portion is hermetically fitted in the ring member, and the ring member is arranged around the outer circumference of the cylindrical side wall of the burner body, so that its outer periphery is hermetically fitted in the ring.

According to this preferred embodiment, the ring member can be combined with the burner cover, so that the burner cover can be firmly assembled on the burner body, and the appearance design of the gas burner can be beautiful.

In a preferred embodiment of this aspect, the burner head cover is provided with an outer peripheral portion, and a plurality of holes communicating with the hollow inner cavity are formed on the bottom surface of the outer peripheral portion, and the gas burner head also includes holes corresponding to the plurality of holes. A ring piece of a plurality of protrusions is provided around the cylindrical outer peripheral portion of the hood so that the plurality of protrusions are inserted through corresponding holes.

According to this preferred embodiment of this aspect, the hood and the ring can be integrated into one piece, so that the integrated hood and ring can be easily transported.

In a preferred embodiment of this aspect, the circular head is provided with a cylindrical side wall in which a hollow cavity is provided, the gas burner further comprising: formed on the outer peripheral portion of the burner cover for sealing the hollow cavity The flat sealing part of the mixed gas in the middle; and the cylindrical outer peripheral part surrounding the burner cover and the outer circumference of the cylindrical side wall of the burner body, so as to provide between the inner surface and the outer circumference of the cylindrical side wall The annular part of the gap, the flat sealing part and the annular part are integrally connected with each other.

According to this preferred embodiment of this aspect, since the shape of the flat sealing portion is formed as a cylindrical flat portion, it is easy to fit the burner cover into the ring.

In a preferred embodiment of this aspect, the gas burner further includes: a first gas mixing tube for supplying mixed gas to the hollow cavity; and a second burner unit, the second burner unit includes: a second burner body for supplying additional mixed gas to a second gas mixing tube in its hollow interior; and

A second hood cover detachably mounted on the circular head of the second hood body, the second hood body and the hood are concentrically arranged in the secondary air supply channel, thereby constituting a concentric hood .

According to this preferred embodiment of this aspect, the first burner unit and/or or second burner unit. Therefore, the heating efficiency of the gas burner can be increased, and gas consumption can be suppressed.

In a preferred embodiment of this aspect, the burner cover is integrally provided with a cylindrical portion on its central interior, the cylindrical portion has an opening portion toward its center, and the gas burner further includes a a temperature sensor with a gap between the two, which protrudes upwards through a circular surface portion, so that in a state where the gas burner is being used and a hot object is placed above the burner cover , the temperature sensor is in contact with the heated object in order to detect the surface temperature of the burned object.

According to this preferred embodiment, secondary air for combustion can be obtained for the hood, and the secondary air can be passed through the secondary air supply hole and the opening portion to cool the temperature sensor.

In a preferred embodiment of this aspect, the burner cover is formed on a part of the bottom of its secondary air supply channel with a groove provided between one of the burners and the sealing part fitted in the burner body, the groove having A side surface with a flame port is formed.

According to this preferred embodiment of this aspect, a flame port for ignition and a flame for detecting an electromotive force of a part of the burner safety device can be formed.

Several preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

(first embodiment)

Fig. 1 is a sectional view of a gas burner according to a first embodiment of the present invention.

As shown in FIG. 1 , the gas burner of this embodiment includes a burner body 1 having a circular head 1 a and a gas mixing tube 1 b.

The circular head 1a is provided with a cylindrical side wall 1c having a top side opening on its top surface and a bottom side opening on a central portion of its bottom surface.

The gas burner 1 is also provided with a burner cover 2 which is detachably mounted on the round head 1a to fit in the bottom side opening to form a hollow cavity inside the round head 1a 1d. A gas mixing tube 1b extends radially from the circular head 1a so as to communicate with a hollow inner chamber 1d serving as a mixing chamber. The gas mixing pipe 1b is provided with a supply port 1e through which gas and primary air are supplied.

On the other hand, the hood 2 is manufactured by pressing a material to be pressed, such as a stainless material, so that the hood 2 includes a conical top surface portion 2a, from the conical top surface portion 2a An inner cylindrical portion 4 extending downward from the inner end, an outer cylindrical portion 5 extending downward from the outer end of the conical top surface portion 2a, and an outer flat surface radially extending from the bottom end of the outer cylindrical portion 5 Part 6.

When the burner cover 2 is installed on the round head 1a, the outer flat part 6 of the burner cover 2 is sealed and installed on the cylindrical side wall 1c, whereby the mixed gas supplied in the mixing chamber 1d will not Leak between the outer flat part 6 of the burner cover 2 and the cylindrical side wall 1c, and the inner cylindrical part 4 is sealed and connected in the bottom opening of the burner body 1, so that the mixed gas will not flow in the inner circle Leakage occurs between the cylindrical portion 4 and the cylindrical side wall 1c.

The inner cylindrical portion 4 has a hollow inner space and an open bottom surface, so that the hollow inner space communicates with the top side opening and the bottom side opening, thereby providing the secondary air supply channel 3, the secondary air supplied therein flow through the supply channel.

Next, FIG. 2 shows a top view of the burner cover 2 , and FIG. 3 shows a side sectional view of the burner cover 2 .

That is, the head cover 2 is provided with a plurality of burners 7 .

These flame ports 7 are formed on the circular top surface portion 2 a and radially arranged at equal intervals along the circumferential direction of the circular top surface portion so that each flame port 7 is directed toward the central portion of the cylindrical portion 4 . Next, FIG. 4 shows a cross-sectional view of the flame port 7 taken along line IV-IV in FIG. 2 .

As shown in Figure 4, the flame port 7 has an inner end 7a and the other inner end 7b opposite to the inner end 7a along the radial direction of the burner cover 2, and the flame port 7 is pressed into: the inner end 7a protrudes upwards relative to the other inner end 7b so as to provide a predetermined mouth width 8 between the inner end 7a and the other inner end 7b.

That is, in the structure of the gas burner head of the first embodiment, the mixed gas supplied in the burner head body 1 flows into the mixing chamber 1d of the burner head body 1 so that the mixed gas is ejected from each flame port 7 .

At the same time, secondary air is supplied to the burner cover 2 through the secondary air supply passage 3 of the inner cylindrical portion 4, so that the injected mixed gas is combusted with the assistance of the secondary air, whereby flames are generated through each flame port 7 .

At the same time, the mixed gas (flame) ejected from the flame opening width 8 of the flame opening 7 flows obliquely upward along the circumferential direction.

That is, according to the structure of the gas burner head of the first embodiment, since the flame flows obliquely upward through the burner opening 7 along the circumferential direction, the force of the flame flowing in the circumferential direction causes a swirl flow, so that it can be supplied by the secondary air. The channel 3 sucks in a large amount of secondary air, so that the gas burner burns well according to the large amount of secondary air.

(second embodiment)

In this second embodiment, only the structure of the flame port is different from that of the gas burner head in the first embodiment, so only the structure and operation of the flame port of the gas burner head in the second embodiment will be described, and no further Other structures and operations are described.

That is, FIG. 5 shows a cross-sectional view of a burner port 7K of a burner cover of a gas burner according to the second embodiment, taken along line IV-IV in FIG. 2 .

As shown in the second embodiment in FIG. 5, similarly to the first embodiment in FIG. 4, the flame port 7K has an inner end portion 7a protruding upward relative to the other inner end portion 7b.

In this embodiment, the inner end 7a of the burner port 7K has a curved portion 9a1 extending obliquely upward in the circumferential direction from the circular top surface portion 2a of the hood 2, and a portion parallel to the circular top surface from the curved portion 9a1. 2a and a planar portion 9a2 serving as an extension of the other inner end 7b of the planar portion 9b.

According to such a structure of the gas burner head of the second embodiment, when performing press work on each burner opening 7K of the burner cover 2 so as to manufacture each burner opening width 8, the respective flat parts 9a2 and 9b can be placed in a mold ( die) so as to precisely carry out the pressing process, thereby being able to produce a substantially uniform flame mouth width 8 of the flame mouth 7K.

(third embodiment)

In this third embodiment, only the structure of the flame port is different from that of the gas burner head in the second embodiment, so only the structure and operation of the flame port of the gas burner head in the third embodiment will be described, and no further Other structures and operations are described.

That is, FIG. 6 shows a top view of a burner cover 2L of a gas burner according to a third embodiment of the present invention, and FIG. 7 shows a section of the gas burner along line VII-VII in FIG. A sectional view of the burner port 7L of the hood 2L.

The hood cover 2L is provided with a plurality of protrusions 10 formed such that a plurality of predetermined portions of the circular top surface portion 2a arranged radially at equal intervals along the circumferential direction are upward relative to other portions of the circular top surface portion. protrudes to provide a space 10 a communicating with the hollow inner space of the hollow inner portion 4 inside the convex portion 10 . Each convex portion 10 is directed toward the center portion of the hob 2L.

Each convex portion 10 is formed on its top surface with a flame port 7L having substantially the same structure as the flame port 7K and communicating with the space 10 a of the convex portion 10 .

That is, the flame port 7L is provided with an inner end portion 7a having a curved portion 9a1 extending obliquely upward in the circumferential direction from a vertical side surface 10b of the convex portion 10, and another inner end portion 7b (planar portion 9b) and From the curved portion 9a1 to a planar portion 9a2 extending parallel to the circular top surface portion 2a, the other inner end portion 7b extends in parallel from another vertical side surface 10c opposite to the vertical side surface 10b of the convex portion 10.

According to the structure of the gas burner of the third embodiment, since the space 10a is provided inside the protrusion 10, secondary air can be supplied through the space 10a, and is in the following state: the gas burner is being used, and is The hot frying pan is placed above the burner cover 2L through a tripod, and when the soup overflows the frying pan, the soup overflowing the frying pan can flow through the space 10a.

(fourth embodiment)

In this embodiment, the entire surface of the hood 2 of the fourth embodiment is finished with heat-resistant metal for coloring.

Other structures and operations of the gas burner head of the fourth embodiment are substantially the same as those of the gas burner head of the first to third embodiments, so other structures and operations of the gas burner head will not be described here.

According to the fourth embodiment, since the burner cover 2 of the fourth embodiment is made of the material to be pressed, such as a stainless material, various metal finishing can be applied to the surface of the gas burner 2 means, so that it is easy to design the burner cover 2 of the gas burner of the fourth embodiment.

(fifth embodiment)

In the case that the parts of the gas burner of the fifth embodiment have the same reference numbers as those of the gas burner of the first to fourth embodiments, the parts of the gas burner of the fifth embodiment have the same characteristics as those of the first to fourth embodiments. The components of the gas burner head of the fifth embodiment correspond to the same structure, so these parts of the gas burner head of the fifth embodiment will not be described in detail again.

Fig. 8 shows a side sectional view of the hood of the fifth embodiment.

In this embodiment, the gas burner has a burner cover 2M having a circular peripheral portion 11 corresponding to the outer flat portion 6 in FIG. 1 and a cylinder corresponding to the outer cylindrical portion 5. Shaped peripheral part 12.

A circular peripheral portion 11 of the burner cover 2M is mounted on a cylindrical side wall 1c of the burner body 1 .

Furthermore, the gas burner of this embodiment includes a ring 13 serving as a sealing portion, which is provided around the cylindrical outer peripheral portion 12 so that the cylindrical outer peripheral portion 12 is hermetically fitted in the ring 13 .

The ring 13 is also arranged around the outer circumference of the cylindrical side wall 1c of the burner body 1, so that the outer circumference of the cylindrical side wall is hermetically fitted in the ring 13, thereby providing a gap between the burner body 1 and the ring 13. a sealing portion 14 .

In addition, the ring 13 is formed with a stepped portion 15 on its bottom end so as to provide a gap between its inner side surface and the outer periphery of the cylindrical side wall 1c, whereby the gas burner is being used and burned. The frying pan is placed on the top of the stove cover 2M by the tripod, and when the soup overflows the frying pan, the soup overflowing the frying pan can be prevented from leaking into the sealing part 14 .

According to the structure of the gas burner of the fifth embodiment, since the ring 13 is combined with the burner cover 2M, the burner cover 2M can be firmly assembled on the burner body 1, and the appearance design of the gas burner can be improved. beautiful.

(sixth embodiment)

Fig. 9 shows a side sectional view of the burner cover of the sixth embodiment, and Fig. 10 shows the caulking part of the burner cover 2N of the gas burner shown in Fig. 9 and the ring 13 of the gas burner. Partial zoom-in.

In the case that the parts of the gas burner of the sixth embodiment have the same reference numbers as those of the gas burner of the first to fifth embodiments, the components of the gas burner of the sixth embodiment have the same characteristics as those of the first to fifth embodiments. The parts of the gas burner head of the sixth embodiment correspond to the same structure, so these parts of the gas burner head of the sixth embodiment will not be described in detail again.

9 and 10, the circular peripheral portion 11A is not mounted on the cylindrical side wall 1c of the burner body 1, and is formed on its bottom surface with a plurality of holes 16 communicating with the mixing chamber 1d. In addition, the ring 13A is provided with a plurality of protrusions 17 corresponding to the holes 16 so that when the ring 13A is disposed around the cylindrical outer peripheral portion 12 so that the cylindrical outer peripheral portion 12 fits in the ring 13A, The protrusions 17 are inserted through the corresponding holes 16 . In this embodiment, when the convex portion 17 is inserted into the hole 16 , the bottom end of the convex portion 17 protrudes from the hole 16 , and a gap 18 is provided between each convex portion 17 and each hole 16 along the horizontal direction. The respective bottom ends of the protrusions 17 which have been inserted into the respective holes 16 are caulked.

That is, in this embodiment, the top cover 2N and the ring 13A are integrated, so that the integrated top cover 2N and the ring 13A are easily transported.

In addition, the ring 13A is arranged around the cylindrical side wall 1c of the burner body 1, so that the cylindrical side wall 1c is hermetically fitted in the ring 13A, thereby providing a seal between the burner body 1 and the ring 13A. Part 14.

In addition, the circular ring 13A is formed with a stepped portion 15 on its bottom end so as to provide a gap between its inner surface and the outer periphery of the cylindrical side wall 1c, whereby the gas burner is being used and burned. The frying pan is placed on the top of the stove cover 2N by the tripod, and when the soup overflows the frying pan, the soup overflowing the frying pan can be prevented from leaking into the sealing part 14 .

In addition, the bottom of the sealing portion 14 is mounted on the cylindrical side wall 1c of the burner body 1 so as to form a gap between the bottom end portion of the protrusion 17 which is caulked and the cylindrical side wall 1c of the burner body 1. gap.

In addition, since the slit 18 is formed in the horizontal direction (the radial direction thereof) between each protrusion 17 and each hole 16, when fitting a plurality of protrusions 17 into the holes 16 at the same time, it is easy to fit the protrusions 17 into the holes 16. 17 fits into the hole 16 without affecting the sealing part 14 in any way.

(seventh embodiment)

In the case that the numbering of the parts of the gas burner in the seventh embodiment is the same as that of the gas burner in the first to sixth embodiments, the parts of the gas burner in the seventh embodiment have the same characteristics as those in the first to sixth embodiments. The parts of the gas burner head of the seventh embodiment correspond to the same structure, so these parts of the gas burner head of the seventh embodiment will not be described in detail again.

Fig. 11 shows a side sectional view of a seventh embodiment of the hood.

In this embodiment, the ring 13B is formed with a peripheral groove 19 on its peripheral portion so that the peripheral portion of the burner cover 2P fits in the peripheral groove 19 . An outer periphery 20 of the ring 13B is caulked toward the top cover side so that the ring 13B and the top cover 2P are integrated with each other.

In addition, the ring 13B is also formed on its inner side with a circumferential flat seal portion 21 horizontally protruding inwardly from the outer peripheral groove side of the ring 13B so as to be formed in a substantially cylindrical shape so that the flat seal portion 21 is It can be installed on the cylindrical side wall 1c of the burner body 1, so that the mixed gas in the mixing chamber 1d is horizontally sealed by the plane sealing part 21. In addition, the ring 13B is also formed with a stepped portion 22 on its bottom end so as to provide a gap between its inner surface and the outer periphery of the cylindrical side wall 1c, so that the flat bottom of the gas burner is being used and scorched. The pot is placed on the top of the stove cover 2P by the tripod, and when the soup overflows the pan, it can prevent the soup overflowing the pan from leaking into the flat sealing part 21 .

According to the structure of the seventh embodiment, since the shape of the flat sealing portion is constituted as a cylindrical flat portion, it is easy to fit the burner cover 2P into the ring 13B.

(eighth embodiment)

In the case that the numbering of the parts of the gas burner in the eighth embodiment is the same as that of the gas burner in the first to seventh embodiments, the parts of the gas burner in the eighth embodiment have the same characteristics as those in the first to seventh embodiments. The components of the gas burner of the eighth embodiment correspond to the same structure, so these parts of the gas burner of the eighth embodiment will not be described in detail again.

Fig. 12 shows a top view of a gas burner according to an eighth embodiment of the present invention.

As shown in Figure 12, the gas burner has a concentric structure, which has a first gas burner unit corresponding to the burner body (first burner body) 1 and burner cover (first burner cover) 2 , and has a second burner unit 23 .

That is, the second burner unit 23 has a second burner body 23a, and the second burner body 23a has a second gas mixing tube 23b different from the gas mixing tube 1b, and the structure of the second burner body 23a is similar to that of the furnace. Head body 1 is roughly the same.

The second burner unit 23 also has a second burner cover 23b mounted on the mounting surface of the second burner body 23a. In addition to the second gas mixing pipe 23b, a second burner body 23a and a burner cover 23c are concentrically disposed in the secondary air supply passage 3. As shown in FIG.

According to the structure of the gas burner, since the first burner unit (burner body 1 and burner cover 2) and the second burner unit are concentrically arranged to provide a concentric burner, the first burner unit can be selected and/or second burner unit.

(ninth embodiment)

FIG. 13 shows a top view of a hood of the ninth embodiment of the present invention with a temperature sensor 24 installed therein, and FIG. 14 shows a side sectional view of the hood.

In the case that the parts of the gas burner of the ninth embodiment have the same reference numbers as those of the gas burner of the first to eighth embodiments, the parts of the gas burner of the ninth embodiment have the same characteristics as those of the first to eighth embodiments. The parts of the gas burner head of the ninth embodiment correspond to the same structure, so these parts of the gas burner head of the ninth embodiment will not be described in detail again.

In FIGS. 13 and 14 , the hood cover 2Q is integrally provided on its central inside with a cylindrical portion 25 having an opening portion 26 toward its center.

In addition, the gas burner includes a temperature sensor 24 disposed in the opening portion 26 with a gap therebetween, the temperature sensor protruding upward through the circular top surface portion 2a so that when the gas burner is being used , and the heated object is placed on the top of the burner cover 2Q by a tripod, the temperature sensor 24 contacts the heated object so as to detect the surface temperature of the burned object.

In addition, the top cover 2Q is formed on the bottom thereof with a secondary air supply hole 27 through which secondary air is supplied from the bottom side of the top cover 2Q into the mixing chamber 1d.

According to this structure, secondary air for combustion is available to the top cover 2Q, and the secondary air can cool the temperature sensor 24 through the secondary air supply hole 27 and the opening portion 26 .

(tenth embodiment)

FIG. 15 shows a top view of a burner cover of a gas burner according to a tenth embodiment of the present invention, and FIG. 16 shows a side sectional view of the burner cover.

In the case that the components of the gas burner in the tenth embodiment have the same reference numerals as the gas burner in the first to ninth embodiments, the components of the gas burner in the tenth embodiment have the same characteristics as those in the first to ninth embodiments. The components of the gas burner head of the tenth embodiment correspond to the same structure, so these parts of the gas burner head of the tenth embodiment will not be described in detail again.

In FIGS. 15 and 16, the burner cover 2R is formed on a part of the bottom (sealing portion 4b) of its inner cylindrical portion 4 with a seal between one of the flame openings 7 and the sealing portion 4b fitted in the burner body 1. groove 28. The groove 28 has side surfaces 29 forming a flame port 30 for ignition.

Therefore, in this embodiment, the flame port 30 for ignition and the flame 32 for detecting the electromotive force of the component 31 of the burner safety device can be formed.

Whilst the invention has so far been described in terms of preferred embodiments thereof and several variations thereof, it is to be understood that there are many variations not described herein but all of which are covered by the appended claims Variations, they all fall within the spirit and scope of the present invention.

Claims (14)

1. gas burner comprises:

Furnace end body with rounded nose, described rounded nose have opening and hollow cavity on its top surface, air mixture supplies in the described hollow cavity; And

Be removably mounted on the burner cover on the rounded nose,

Described burner cover comprises:

Be used to constitute the device of auxiliary air feed path, auxiliary air is supplied with by described passage; And

For the usefulness of described auxiliary air feed path and be formed with a plurality of hungry ghosts who spit fire's circular surface part, described hungry ghosts who spit fire radially is provided with towards described circular surface center partly and is connected with the hollow cavity of rounded nose, so that under the assistance of the auxiliary air of air mixture in the auxiliary air feed path that each hungry ghosts who spit fire is flowed out, burn, take this, produce flame by each hungry ghosts who spit fire

Described each hungry ghosts who spit fire along the radial direction of described burner cover have an end with relative the other end, a described end, each hungry ghosts who spit fire's a described end protrudes upward its other end relatively.

2. gas burner as claimed in claim 1 is characterized in that, described each hungry ghosts who spit fire is formed: mobile obliquely along the circumferencial direction of described burner cover by the flame that each hungry ghosts who spit fire produced.

3. gas burner as claimed in claim 2 is characterized in that described rounded nose has basal surface, is provided with opening on the core of described basal surface, and the auxiliary air feed path of described burner cover is assemblied in the described opening that will seal, and

Described burner cover has outside cylindrical shape part of extending from the top, the outside of described circular surface part and the outside planar section that radially extends from the bottom of described outside cylindrical shape part downwards, so that the described outside planar section sealing of burner cover is installed on the rounded nose of described furnace end body.

4. gas burner as claimed in claim 1, it is characterized in that having the sweep that along the circumferential direction extends obliquely from the circular surface part of described burner cover along the described end of described each hungry ghosts who spit fire's radial direction and be parallel to the planar section that circular surface partly extends from described sweep.

5. gas burner as claimed in claim 1 is characterized in that described hungry ghosts who spit fire is provided with equally spacedly along circumferencial direction, and described burner cover is made by press process.

6. gas burner as claimed in claim 1, it is characterized in that, also comprise a plurality of protuberances that are formed on the described circular surface part, described protuberance radially is provided with equally spacedly along circumferencial direction, described each protuberance points to the core of described burner cover, described hungry ghosts who spit fire is respectively formed on the described protuberance, and described air mixture is flowed out obliquely by described hungry ghosts who spit fire, so that produce flame by each hungry ghosts who spit fire.

7. gas burner as claimed in claim 1 is characterized in that, handle through heating resisting metal fine finishining on the whole surface of described burner cover, so that painted.

8. gas burner as claimed in claim 1, it is characterized in that, described rounded nose is provided with the cylinder side wall that described hollow cavity wherein is provided, described burner is covered with the outer peripheral portion on the described cylinder side wall that is installed in rounded nose, described gas burner also comprises the annular element around the described cylindrical shape outer peripheral portion setting of burner cover, so that the sealing of cylindrical shape outer peripheral portion is assemblied in the described annular element, described annular element is around the periphery setting of the cylinder side wall of described furnace end body, so that its periphery sealing is assemblied in the annular element.

9. gas burner as claimed in claim 8 is characterized in that described annular element is provided with step part on its bottom, so that provide gap between the periphery of surperficial and described cylinder side wall within it.

10. gas burner as claimed in claim 1, it is characterized in that, described burner is covered with outer peripheral portion, on the basal surface of described outer peripheral portion, be formed with a plurality of holes that are connected with described hollow cavity, described gas burner also comprises the annular element that has with the corresponding a plurality of protuberances in described a plurality of holes, described annular element is provided with around the described cylindrical shape outer peripheral portion of burner cover, so that described a plurality of protuberance inserts by corresponding hole.

11. gas burner as claimed in claim 5, it is characterized in that, described rounded nose is provided with the cylinder side wall that described hollow cavity wherein is provided, and described gas burner also comprises: be formed on the outer peripheral portion of described burner cover, be used for the flat seal part of the air mixture of sealed hollow inner chamber; And around the periphery setting of the described cylinder side wall of the cylindrical shape outer peripheral portion of burner cover and described furnace end body so that the annular element in gap is provided between the periphery of surface and cylinder side wall within it, described flat seal partly and annular element fuse mutually.

12. gas burner as claimed in claim 1 is characterized in that, also comprises: the first combustion gas mixing pipe that is used for described air mixture is supplied to described hollow cavity; And the second burner unit, the described second burner unit comprises:

Has second furnace end body that is used for other air mixture is supplied to the second combustion gas mixing pipe of its hollow cavity; And

Be removably mounted on the second burner cover on the rounded nose of described second furnace end body, described second furnace end body and burner cover are arranged in the described auxiliary air feed path with one heart, thereby constitute a concentric burner.

13. gas burner as claimed in claim 1, it is characterized in that, described burner covers on and is provided with the cylindrical shape part on its central inner integratedly, described cylindrical shape partly has the opening portion towards its center, described gas burner also comprises the temperature sensor that is arranged in the described opening portion, wherein between leaves the gap, described temperature sensor partly protrudes upward by described circular surface, so that just be used at gas burner, and be placed on by scorching hot object in the state of top of burner cover, described temperature sensor contact is by scorching hot object, so that detect the temperature of burned body surface.

14. gas burner as claimed in claim 1, it is characterized in that, described burner covers on the groove that is formed with on a part of bottom of its auxiliary air feed path between the hermetic unit that to be arranged on one of them hungry ghosts who spit fire with being assemblied in described furnace end body interior, and described groove has the side surface that is formed with a hungry ghosts who spit fire.

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