CN217559822U

CN217559822U - Furnace end and combustor

Info

Publication number: CN217559822U
Application number: CN202221052888.XU
Authority: CN
Inventors: 卢宇轩; 刘栓兴
Original assignee: Guangdong Wanhe Thermal Energy Technology Co Ltd
Current assignee: Guangdong Wanhe Thermal Energy Technology Co Ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-10-11
Anticipated expiration: 2032-05-05

Abstract

The utility model belongs to the technical field of kitchen utensil, a furnace end and combustor are disclosed. The burner comprises a burner body, wherein the peripheral surface of the burner body is provided with a connecting seat which is communicated with a gas channel in the burner body; the Venturi tube is detachably arranged in the connecting seat; and the nozzle assembly is connected with the connecting seat and used for conveying mixed gas of gas and air to the Venturi tube in the connecting seat. The beneficial effects are that: the venturi sets up inside the connecting seat, has cancelled back plate structure to hide the self length of venturi, reduced the volume of furnace end, the venturi can be dismantled and set up in the connecting seat, and then can be according to the different venturi of actual flow demand replacement, keep furnace end body and nozzle assembly's structure in the furnace end, realize the standardization of furnace end.

Description

Furnace end and combustor

Technical Field

The utility model relates to a kitchen utensil technical field especially relates to a furnace end and combustor.

Background

In the field of kitchen appliances, a gas range is a common heating device using open flame heating, wherein a combustion system is an important component of the gas range, and a main element of the gas range is a burner.

The burner is an important part for keeping a gas stove in a good combustion state, and mainly comprises a burner and a fire cover arranged above the burner, wherein gas is conveyed to the fire cover through the burner, the gas is ignited by an ignition needle in an aerobic environment to form flame, and the flame is sprayed out through a fire hole on the fire cover to heat a cooking utensil supported on the gas stove by naked fire.

At present, the furnace end is internally and externally provided with a fire pipeline in a combustor, and each gear is adjusted through a wind door plate, so that the proportion of air pressure and fuel gas is controlled. The integrated venturi tube of current furnace end owing to need loose core after the processing, leads to the rear end of venturi tube to need the back plate, makes the furnace end bulky, and then brings technical problem such as equipment, transportation and storage difficulty and assembly precision, inefficiency.

Through the improvement, for example, chinese patent CN215723370U, its furnace body has set up air inlet joint and the ejector pipe subassembly (that is venturi tube) that matches, and the ejector pipe subassembly is connected in the outer end of air inlet joint, though the backplate has been reduced, the length of ejector pipe subassembly leads to the volume of furnace end still great.

SUMMERY OF THE UTILITY MODEL

One of the technical problems solved by the utility model is to provide a furnace end, which effectively solves the problem of large volume of the furnace end.

One of the technical problems solved by the present invention is to provide a burner to effectively reduce the volume of the burner.

The first technical problem is solved by the following technical scheme:

a burner, comprising:

the outer peripheral surface of the furnace end body is provided with a connecting seat which is communicated to a gas channel in the furnace end body;

the Venturi tube is detachably arranged in the connecting seat; and

and the nozzle assembly is connected with the connecting seat and used for conveying mixed gas of gas and air to the Venturi tube in the connecting seat.

Furnace end compare with background art, the beneficial effect who has does: the venturi sets up inside the connecting seat, has cancelled back plate structure to hide the self length of venturi, reduced the volume of furnace end, the venturi can be dismantled and set up in the connecting seat, and then can be according to the different venturi of actual flow demand replacement, keep furnace end body and nozzle assembly's structure in the furnace end, realize the standardization of furnace end.

In one embodiment, a vent hole communicating the nozzle assembly and the gas channel is arranged in the connecting seat, and the venturi tube is arranged inside the vent hole.

In one embodiment, the inner wall of the vent hole is provided with a step surface, the step surface faces the air inlet end of the vent hole, and the outer wall of the venturi tube is convexly provided with a convex lip which abuts against the step surface.

In one embodiment, the vent hole comprises a large hole part and a small hole part which are sequentially arranged along the air inlet direction, a step surface is formed between the large hole part and the small hole part, and the inner diameter of one end, close to the step surface, of the large hole part is larger than that of one end, close to the step surface, of the small hole part;

the venturi comprises a venturi main body and a convex lip which is arranged on the outer wall of the venturi in a protruding mode along the radial direction, and the venturi main body is matched with the small hole portion and/or the convex lip is matched with the large hole portion.

In one embodiment, the end face of the venturi pipe facing the nozzle assembly is flush with the air inlet end face of the connecting seat.

In one embodiment, the nozzle assembly compresses the venturi tube in a connecting direction when connected to the connecting seat.

In one embodiment, the outer wall of the connecting seat is provided with a first connecting lug;

the nozzle assembly comprises a nozzle seat and a second connecting lug, the second connecting lug is arranged on the outer wall of the air outlet end of the nozzle seat in a protruding mode along the radial direction, and the nozzle assembly comprises:

the first connecting lug is connected with the second connecting lug through a connecting piece;

when the nozzle assembly is connected with the connecting seat, the inner end of the second connecting lug presses the venturi tube towards one end of the nozzle assembly.

In one embodiment, the nozzle assembly further comprises a nozzle, the nozzle is arranged at the air inlet end of the nozzle seat, and an air mixing hole is formed between the air outlet end and the air inlet end of the nozzle seat;

the furnace end also comprises an air inlet pipe, and the air inlet pipe is communicated with the nozzles in the nozzle seat.

In one embodiment, the gas channel comprises an inner gas channel and an outer gas channel, the outer gas channel is arranged around the outer side of the inner gas channel, the inner gas channel is communicated with one connecting seat, and the outer gas channel is communicated with the other connecting seat.

The second technical problem is solved by the following technical solutions:

a burner comprises the furnace end.

Compared with the prior art, the combustor has the beneficial effects that: the combustor has littleer volume, and can be according to the venturi in the different furnace ends of actual flow demand replacement, keeps furnace end body and nozzle assembly's structure in the furnace end, realizes the standardization of furnace end.

Drawings

Fig. 1 is a schematic structural diagram of a furnace end provided in the first and second embodiments of the present application;

fig. 2 is a partial exploded view of the burner shown in fig. 1;

fig. 3 is a schematic structural view of a connecting seat in the furnace end shown in fig. 1;

FIG. 4 is an enlarged view of circle A in FIG. 1;

FIG. 5 is an axial cross-sectional view of a venturi.

The figures are labeled as follows:

1-a furnace end body; 11-a connecting seat; 110-a first connection lug; 111-macropore portion; 112-small hole section; 113-step face;

2-a venturi; 21-a venturi body; 22-a raised lip;

3-a nozzle assembly; 31-a nozzle holder; 32-a second engaging lug; 33-a nozzle; 311-air mixing inlet;

4-air inlet pipe.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The first embodiment is as follows:

the present embodiment provides a furnace end, as shown in fig. 1-2, the furnace end includes a furnace end body 1, a venturi 2 and a nozzle assembly 3.

The inside of furnace end body 1 is equipped with the gas passageway, and the outer peripheral face of furnace end body 1 is equipped with connecting seat 11, and connecting seat 11 communicates to the gas passageway.

In this embodiment, the gas passageway includes the interior gas passageway that is located furnace end body 1 center and encloses the outer gas passageway of establishing outside the interior gas passageway, and connecting seat 11 is total two, and one of them connecting seat is linked together with interior gas passageway, and another connecting seat 11 intercommunication outer gas passageway.

It should be noted that the number of the outer gas passages is not limited, and at least two outer gas passages may be provided, and each outer gas passage is concentrically arranged with respect to the inner gas passage.

Venturi 2 is detachably arranged in connecting seat 11, and venturi 2 is as shown in fig. 5, and it should be noted that the number of venturi 2 is the same as that of connecting seat 11 and the venturi 2 is arranged in a one-to-one correspondence manner, and in this embodiment, there are two venturi 2 in total.

The nozzle assembly 3 is connected with the connecting base 11, and the nozzle assembly 3 is used for conveying mixed gas of gas and air to the venturi tube 2 in the connecting base 11. It can be understood that the mixed gas enters the gas passage of the burner body 1 through the venturi 2.

Venturi 2 sets up in the inside of connecting seat 11, has cancelled the back plate structure among the prior art to hidden venturi 2's self length, reduced the volume of furnace end, venturi 2 can dismantle the setting in connecting seat 11, and then can replace different venturi 2 according to the actual flow demand, remain furnace end body 1 and nozzle assembly 3's structure in the furnace end, realized the standardization of furnace end.

Further, the outer wall of the connecting base 11 is provided with a first connecting lug 110, and in this embodiment, the first connecting lugs 110 are two in number and are radially opposite to the outer wall of the connecting base 11. Of course, the number and position of the first connecting ears 110 can be changed according to actual situations.

The nozzle assembly 3 comprises a nozzle holder 31 and a second lug 32, and the second lug 32 is radially and convexly arranged on the outer wall of the air outlet end of the nozzle holder 31. In this embodiment, two second engaging lugs 32 are provided and can be connected to the two first engaging lugs 110 in a one-to-one correspondence.

The first engaging lug 110 and the second engaging lug 31 are connected by a connecting member. In this embodiment, the connecting member is selected as a screw, that is, the first engaging lug 110 is provided with a screw hole, the second engaging lug 32 is provided with a through hole coaxial with the screw hole along the dotted line L, and the screw hole are matched with each other along the direction of the dotted line L in fig. 2 to realize that the first engaging lug 110 is connected and fixed with the second engaging lug 32.

Further, connecting seat 11 is equipped with the air vent, and in this embodiment, the air vent of connecting seat 11 is unanimous with the radial of furnace end body 1, can directly get into in furnace end body 1 along the wall thickness direction of furnace end body 1. The Venturi tube 2 is inserted in the vent hole in a sealing way.

In this embodiment, the extending direction of the screw hole, the extending direction of the venturi tube 2, and the extending direction of the vent hole are coaxially arranged.

The vent hole is provided with an air inlet end and an air outlet end, and the mixed gas sequentially passes through the air inlet end of the vent hole and the air outlet end of the vent hole.

The inner wall of the vent hole is provided with a step surface 113, the step surface 113 faces the air inlet end of the vent hole, the outer wall of the Venturi tube 2 is convexly provided with a convex lip 22, and the convex lip 22 is abutted against the step surface 13. Preferably, the lip 22 seals against the step surface 13.

It can be understood that the whole of the venturi 2 is arranged in the vent hole, the lip 22 of the venturi 2 abuts against the step surface 113 of the vent hole to realize that the venturi 2 is connected with the step surface 113 in a sealing way, the mixed gas enters the venturi 2 after entering the air inlet end of the vent hole and then is discharged from the other end of the venturi 2, and in the embodiment, the length of the venturi 2 is less than or equal to that of the vent hole. I.e. the gas is still located in the ventilation holes after passing through the venturi 2. On the other hand, the venturi 2 is located at the air inlet end of the vent hole to facilitate installation of the venturi 2.

As shown in fig. 3, the vent hole includes a large hole portion 111 and a small hole portion 112 arranged in this order in the intake direction, and a stepped surface 113 is formed between the large hole portion 111 and the small hole portion 112. The inner diameter of the large hole 111 on the side closer to the step surface 113 is larger than the inner diameter of the small hole 112 on the side closer to the step surface 113.

The present embodiment does not limit the inner diameters of the large hole portion 111 and the small hole portion 112, and although the step surface 113 can be formed at the connection between the large hole portion 111 and the small hole portion 112, the inner diameter of the end of the small hole portion 112 away from the large hole portion 111 is not necessarily smaller than the inner diameter of the large hole portion 111.

The venturi 2 includes a venturi main body 21 and a lip 22, and the lip 22 is radially protruded from the end of the venturi 2. The venturi main body 21 has a cavity formed therein along the air intake direction, the cavity contracting first and then expanding gradually, in this embodiment, the lip 22 is of an annular structure, and the lip 22 is in sealing abutment with the step surface 113. When the nozzle assembly 3 delivers the mixed gas to the venturi 2, the lip 22 is in sealing contact with the step surface 113, so that the mixed gas can only flow to the air outlet end of the vent hole through the venturi 2.

Further, the venturi main body 21 is fitted to the small hole portion 112, and the lip 22 is fitted to the large hole portion 111.

Preferably, venturi body 21 is an interference fit with small bore portion 112 and lip 22 is an interference fit with large bore portion 111. It can be understood that the venturi 2 is fixed by interference fit along the length direction thereof.

Further, the nozzle assembly 3 further includes a nozzle 33 disposed at the air inlet end of the nozzle holder 31, and an air mixing hole 311 is disposed between the air outlet end and the air inlet end of the nozzle holder 31.

In the present embodiment, the nozzle 33 is screwed to the air inlet end of the nozzle holder 31, which can be understood as that the air inlet end of the nozzle holder 31 is provided with an internal thread, and the nozzle 33 is provided with an external thread adapted to the internal thread.

The air mixing hole 311 communicates with the outside of the burner for the intake of air. In this embodiment, the air mixing hole 311 is a square hole formed in the sidewall of the nozzle holder 31, and the notch of the square hole is close to the venturi tube 2.

It should be noted that the burner further includes an air inlet pipe 4 for inputting gas, one end of the air inlet pipe 4 is connected to the air inlet end of the nozzle holder 31, and the air inlet pipe 4 is communicated with the nozzle 33.

The furnace end that this embodiment provided, venturi 2 set up in the inside of connecting seat 11, have cancelled the back plate structure among the prior art to hidden venturi 2's self length, reduced the volume of furnace end, venturi 2 can dismantle the setting in connecting seat 11, and then can be according to different venturi 2 of actual flow demand replacement, remain furnace end body 1 in the furnace end and nozzle assembly 3's structure, realized the standardization of furnace end.

Example two:

the present embodiment provides a furnace end, as shown in fig. 1, the furnace end includes a furnace end body 1, a venturi 2 and a nozzle assembly 3.

It should be noted that the number of the outer gas passages is not limited, and at least two outer gas passages may be provided, each outer gas passage being concentrically arranged with respect to the inner gas passage.

The venturi tubes 2 are detachably arranged in the connecting seat 11, and as shown in fig. 5, it should be noted that the number of the venturi tubes 2 is the same as that of the connecting seat 11 and the venturi tubes 2 are arranged in a one-to-one correspondence manner, and in this embodiment, there are two venturi tubes 2 in total.

The nozzle assembly 3 is connected with the connecting base 11, and the nozzle assembly 3 is used for conveying mixed gas of gas and air to the venturi tube 2 in the connecting base 11. It can be understood that the mixed gas enters the gas channel of the burner body 1 through the venturi 2.

Further, the outer wall of the connecting seat 11 is provided with first connecting lugs 110, and in this embodiment, the first connecting lugs 110 are two in number and are radially opposite to the outer wall of the connecting seat 11. Of course, the number and position of the first connecting ears 110 can be changed according to actual situations.

The nozzle assembly 3 comprises a nozzle holder 31 and a second engaging lug 32, wherein the second engaging lug 32 is protruded from the outer wall of the air outlet end of the nozzle holder 31 along the radial direction. The outlet end of the nozzle holder 31 can press the venturi tube 2.

It should be noted that in the present embodiment, two second engaging lugs 32 are provided and can be connected to the two first engaging lugs 110 in a one-to-one correspondence.

The first engaging lug 110 and the second engaging lug 32 are connected by a connecting member.

As shown in fig. 4, when the nozzle assembly 3 is coupled to the coupling base 11, the inner end of the second coupling lug 32 presses the venturi 2 toward the end of the nozzle assembly 3.

In this embodiment, the connecting member is selected as a screw, that is, the first engaging lug 110 is provided with a screw hole, the second engaging lug 32 is provided with a through hole coaxial with the screw hole along the dotted line L, and the screw hole are matched with each other along the direction of the dotted line L in fig. 2 to realize that the first engaging lug 110 is connected and fixed with the second engaging lug 32.

Further, connecting seat 11 is equipped with the air vent, and in this embodiment, the air vent of connecting seat 11 is unanimous with furnace end body 1's radial, can follow furnace end body 1's wall thickness direction directly get into in furnace end body 1.

The vent hole is provided with an air inlet end and an air outlet end, and the mixed gas sequentially passes through the air inlet end and the air outlet end of the vent hole.

The inner wall of the vent hole is provided with a step surface 113, the step surface 113 faces the air inlet end of the vent hole, the outer wall of the Venturi tube 2 is convexly provided with a convex lip 22, and the convex lip 22 is in sealing contact with the step surface 113.

It can be understood that the whole of the venturi 2 is arranged in the vent hole, the lip 22 of the venturi 2 abuts against the step surface 113 of the vent hole to realize that the venturi 2 is connected with the step surface 113 in a sealing way, the mixed gas enters the venturi 2 after entering the air inlet end of the vent hole and then is discharged from the other end of the venturi 2, and in the embodiment, the length of the venturi 2 is less than or equal to that of the vent hole. I.e. the gas is still located in the vent hole after passing through the venturi 2. On the other hand, the venturi 2 is located at the air inlet end of the vent hole to facilitate installation of the venturi 2.

As shown in fig. 3, the vent hole includes a large hole portion 111 and a small hole portion 112 arranged in this order in the air intake direction, and a step surface 113 is formed between the large hole portion 111 and the small hole portion 112. The inner diameter of the large hole 111 on the side closer to the step surface 113 is larger than the inner diameter of the small hole 112 on the side closer to the step surface 113.

The venturi 2 includes a venturi main body 21 and a lip 22, and the lip 22 is radially protruded from the end of the venturi 2. The venturi main body 21 has a cavity formed therein, which gradually expands after contracting, and in this embodiment, the lip 22 is of an annular structure, and the lip 22 is in sealing contact with the step surface 113. When the nozzle assembly 3 delivers the mixed gas to the venturi 2, the lip 22 is in sealing contact with the step surface 113, so that the mixed gas can only flow to the air outlet end of the vent hole through the venturi 2.

Further, the nozzle assembly 3 compresses the venturi 2 in the connection direction when being connected to the connection socket 11. It will be appreciated that the venturi 2 is not constrained to be fixed in the vent holes before the nozzle assembly 3 is connected to the connection socket 11, i.e. the venturi 2 is movable in the vent holes in the axial and radial directions of the latter, thereby facilitating the rapid installation of the venturi 2, and that the nozzle assembly 3 compresses the venturi 2 and thereby fixes the venturi 2 when the nozzle assembly 3 is connected to the connection socket 11.

The nozzle assembly 3 comprises a nozzle 33, the nozzle 33 is arranged at the air inlet end of the nozzle holder 31, and an air mixing hole 311 is formed between the air outlet end and the air inlet end of the nozzle holder 31.

It should be noted that the burner further includes an air inlet pipe 4 for inputting fuel gas, one end of the air inlet pipe 4 is connected with the air inlet end of the nozzle holder 31, and the air inlet pipe 4 is communicated with the nozzle 33.

Example three:

the present embodiment provides a burner, which includes the furnace end provided in the first embodiment or the second embodiment.

The combustor that this embodiment provided has littleer volume, and can be according to the venturi in the different furnace ends of actual flow demand replacement, keeps furnace end body and nozzle assembly's structure in the furnace end, realizes the standardization of furnace end.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A burner, comprising:

the burner comprises a burner body (1), wherein the peripheral surface of the burner body is provided with a connecting seat (11), and the connecting seat (11) is communicated with a gas channel in the burner body (1);

the Venturi tube (2) is detachably arranged in the connecting seat (11); and

nozzle assembly (3), connect connecting seat (11), nozzle assembly (3) be used for to in connecting seat (11) venturi tube (2) carry the mist of gas and air.

2. The burner according to claim 1, wherein a vent hole is formed in the connecting seat (11) to communicate the nozzle assembly (3) and the gas channel, and the venturi tube (2) is disposed inside the vent hole.

3. The burner of claim 2, wherein the inner wall of the vent hole is provided with a step surface (113), the step surface (113) faces the air inlet end of the vent hole, and the outer wall of the venturi tube (2) is convexly provided with a convex lip (22), and the convex lip (22) abuts against the step surface (113).

4. The burner of claim 3, wherein the vent hole includes a large hole portion (111) and a small hole portion (112) arranged in sequence in an air intake direction, the large hole portion (111) and the small hole portion (112) forming the step surface (113) therebetween, an inner diameter of an end of the large hole portion (111) adjacent to the step surface (113) being larger than an inner diameter of an end of the small hole portion (112) adjacent to the step surface (113);

the venturi (2) comprises a venturi main body (21) and a convex lip (22) which is arranged on the outer wall of the venturi (2) in a protruding mode, the venturi main body (21) is matched with the small hole portion (112) and/or the convex lip (22) is matched with the large hole portion (111).

5. The burner according to claim 2, characterized in that the end face of the venturi tube (2) facing the nozzle assembly (3) is flush with the inlet end face of the connecting seat (11).

6. The burner according to any of the claims 1 to 5, characterized in that the nozzle assembly (3) compresses the venturi tube (2) in the connecting direction when connecting the connecting seat (11).

7. The burner according to claim 6, wherein the outer wall of the connecting seat (11) is provided with a first connecting lug (110);

the nozzle assembly (3) comprises a nozzle seat (31) and a second connecting lug (32), the second connecting lug (32) is arranged on the outer wall of the air outlet end of the nozzle seat (31) in a protruding mode along the radial direction, and the nozzle assembly comprises:

the first connecting lug (110) is connected with the second connecting lug (32) through a connecting piece;

when the nozzle assembly (3) is connected with the connecting seat (11), the inner end of the second connecting lug (32) compresses the venturi tube (2) towards one end of the nozzle assembly (3).

8. The burner according to claim 7, wherein the nozzle assembly (3) further comprises a nozzle (33), the nozzle (33) is disposed at an air inlet end of the nozzle holder (31), and an air mixing hole (311) is formed between an air outlet end and an air inlet end of the nozzle holder (31);

the furnace end further comprises an air inlet pipe (4), and the air inlet pipe (4) is communicated with the nozzle (33) in the nozzle seat (31).

9. The burner of claim 1, wherein the gas passages comprise an inner gas passage and an outer gas passage, the outer gas passage being disposed around an outer side of the inner gas passage, the inner gas passage communicating with one of the connecting seats (11), and the outer gas passage communicating with the other connecting seat (11).

10. A burner comprising the burner of any one of claims 1 to 9.