CN218993459U

CN218993459U - Upper air inlet furnace end and gas stove

Info

Publication number: CN218993459U
Application number: CN202223601246.3U
Authority: CN
Inventors: 卢楚鹏; 胡永衡; 胡锦桐; 黎永健
Original assignee: Guangdong Vanward New Electric Co Ltd
Current assignee: Guangdong Vanward New Electric Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-09
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to an upper air inlet furnace end and a gas stove, wherein the upper air inlet furnace end comprises a nozzle, a base and an injection pipe, external threads are arranged on the periphery of the injection pipe, a mounting hole is formed in the base in a penetrating mode, internal threads are arranged on the hole wall of the mounting hole, one end of the injection pipe is screwed into the mounting hole, the other end of the injection pipe protrudes out of one side face, close to the nozzle, of the base, the injection pipe is arranged at intervals with the nozzle, an air supplementing area is formed between the injection pipe and the nozzle, and the distance between the injection pipe and the nozzle is adjustable. According to the utility model, the inner thread is arranged on the wall of the mounting hole of the base, and the outer thread is arranged on the periphery of the injection pipe, so that the injection pipe is in threaded connection with the mounting hole, and the position of the injection pipe can be adjusted by rotating the injection pipe, thereby adjusting the size of the air supplementing area and adjusting the air quantity entering the injection pipe.

Description

Upper air inlet furnace end and gas stove

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to an upper air inlet furnace end and a gas stove comprising the upper air inlet furnace end.

Background

The prior gas stove comprises an upper air inlet furnace end, wherein an air door structure is a key structure of the upper air inlet furnace end, and the air inlet quantity of the air door directly influences the combustion effect of the upper air inlet furnace end. At present, the air inflow is regulated by controlling the area of the air inlet between the fixed air door and the air regulating door, so that the aim of regulating the air inflow is fulfilled, and the number of structural parts is large, so that the assembly process is many. In order to reduce the number of parts, some structural features are integrated on parts such as a furnace end, so that the processing difficulty of the working procedure of the rear part is increased, and the working procedure is increased.

Disclosure of Invention

One of the technical problems to be solved by the utility model is to provide an upper air inlet furnace end, which has a simple structure and is convenient for adjusting the air inflow.

The second technical problem to be solved by the utility model is to provide a gas stove which has a simple structure and good combustion effect.

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

the utility model provides an upward air inlet furnace end, including nozzle, base and injection pipe, the periphery of injection pipe is provided with the external screw thread, run through on the base and be provided with the mounting hole, the pore wall of mounting hole is provided with the internal screw thread, the one end of injection pipe is revolved and is twisted in the mounting hole, the other end protrusion of injection pipe in the base is close to a side of nozzle, just the injection pipe with the nozzle interval sets up, injection pipe with form the air supply district between the nozzle, injection pipe with the interval between the nozzle is adjustable.

Compared with the background technology, the upper air inlet furnace end has the following beneficial effects: the inner thread is arranged on the wall of the mounting hole of the base, and the outer thread is arranged on the periphery of the injection pipe, so that the injection pipe is in threaded connection with the mounting hole, the position of the injection pipe can be adjusted by rotating the injection pipe, the distance S between the injection pipe and the nozzle is adjusted, the size of an air supplementing area is adjusted, and the air quantity entering the injection pipe is adjusted; through setting up the injection pipe, can make air and gas carry out intensive mixing in intraductal, improve combustion effect, can understand that, when the nozzle was drawn towards injection pipe blowout gas, the gas can drive its nearby regional air and get into the injection intraductal together to mix in the injection intraductal, finally realize abundant burning in fire lid department.

In one embodiment, the injection pipe further comprises a fixing nut, the fixing nut is screwed on the periphery of the injection pipe, and the fixing nut is abutted against one side face, close to the nozzle, of the base.

In one embodiment, the outer periphery of the injection pipe is provided with a step surface, the step surface is positioned on one side of the fixing nut away from the base, and the diameter of the step surface is larger than the inner diameter of the fixing nut.

In one embodiment, a side of the base facing the nozzle is provided with a boss, and the mounting hole is provided on an end face of the boss.

In one embodiment, the outer periphery of the end, far away from the base, of the injection pipe is provided with a plurality of operation side surfaces, all the operation side surfaces are annularly arranged around the axis of the injection pipe and are sequentially connected, and the operation side surfaces are used for being abutted against an installation tool so that the installation tool drives the injection pipe to rotate.

In one embodiment, the device further comprises a fire cover, wherein the fire cover is arranged on one side surface of the base, which is far away from the nozzle, and the fire cover is covered outside the mounting hole, a fire outlet hole is formed in the fire cover, and the central axis of the inner cavity of the fire cover, the central axis of the injection pipe and the central axis of the nozzle coincide.

In one embodiment, the injection pipe comprises an air inlet cavity and an injection cavity which are connected, and the diameter of the air inlet cavity is gradually reduced along the flowing direction of the fuel gas.

In one embodiment, the injection cavity comprises a mixing cavity and an air outlet cavity, the air inlet cavity is communicated with the air outlet cavity through the mixing cavity, the diameter of the air outlet cavity is gradually increased along the flowing direction of the fuel gas, the maximum diameter of the air outlet cavity is D1, the diameter of the mixing cavity is D2, and the maximum diameter of the air inlet cavity is D3, wherein D3 is more than D1 and equal to or greater than D2.

In one embodiment, the mounting hole comprises a mounting section and a guide section, the guide section is arranged on one side of the mounting section away from the nozzle, and the diameter of the guide section gradually increases along the flowing direction of the fuel gas.

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

the gas stove comprises the upper air inlet stove head.

Compared with the background technology, the gas stove has the beneficial effects that: the upper air inlet furnace end has the advantages of simple structure, simple structure and low processing and assembling difficulty because of the small number of parts of the upper air inlet furnace end; the upper air inlet furnace end can conveniently adjust the air inflow, so that the combustion effect of the gas stove is good.

Drawings

FIG. 1 is a schematic cross-sectional view of an upper air intake burner according to an embodiment of the present utility model;

FIG. 2 is an exploded view of an upper air intake burner according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the structure of the ejector tube and the retaining nut according to an embodiment of the present utility model;

fig. 4 is a schematic cross-sectional view of the structure of the ejector tube and the fixing nut according to an embodiment of the present utility model.

In the figure:

1. a nozzle; 2. a base; 201. a boss; 202. a first side; 203. a mounting hole; 3. an ejector tube; 301. an air inlet cavity; 302. a mixing chamber; 303. an air outlet cavity; 304. an operation side surface; 305. a step surface; 4. a fixing nut; 401. a second side; 5. an air replenishment zone; 6. a fire cover; 601. a fire hole; 602. an outer ring fire dividing area; 603. and a central fire dividing area.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements 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 application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

As shown in fig. 1 to 3, an embodiment of the present utility model provides an upper air intake furnace end, which includes a nozzle 1, a base 2 and an injection pipe 3, wherein an external thread is provided on the periphery of the injection pipe 3, a mounting hole 203 is provided on the base 2 in a penetrating manner, an internal thread is provided on the wall of the mounting hole 203, one end of the injection pipe 3 is screwed into the mounting hole 203, the other end of the injection pipe 3 protrudes out of a side surface of the base 2 near the nozzle 1, the injection pipe 3 and the nozzle 1 are arranged at intervals, an air supplementing area 5 is formed between the injection pipe 3 and the nozzle 1, and the interval between the injection pipe 3 and the nozzle 1 is adjustable. Referring to fig. 1, in this embodiment, the distance between the ejector 3 and the nozzle 1 is S, and rotating the ejector 3 can adjust the size of the air supply area 5, that is, adjust the size of S. The inner thread is arranged on the wall of the mounting hole 203 of the base 2, and the outer thread is arranged on the periphery of the injection pipe 3, so that the injection pipe 3 is in threaded connection with the mounting hole 203, the position of the injection pipe 3 can be adjusted by rotating the injection pipe 3, the distance S between the injection pipe 3 and the nozzle 1 is adjusted, the size of the air supplementing area 5 is adjusted, and the air quantity entering the injection pipe 3 is adjusted; through setting up the injection pipe 3, can make air and gas carry out intensive mixing in intraductal, improve combustion effect, can understand that, when nozzle 1 is towards injection pipe 3 blowout gas, gas can drive its nearby regional air and get into in the injection pipe 3 together to mix in the injection pipe 3, finally realize abundant burning in fire lid 6 department.

Preferably, the upper air inlet furnace end further comprises a fixing nut 4, the fixing nut 4 is screwed on the periphery of the injection pipe 3, and the fixing nut 4 is abutted against one side face of the base 2, which is close to the nozzle 1. In this embodiment, the base 2 has a first side 202 facing the fixing nut 4, the mounting hole 203 is provided on the first side 202, the fixing nut 4 has a second side 401 facing the base 2, and when the fixing nut 4 is screwed to the second side 401 to abut against the first side 202, the rotation of the ejector 3 can be restricted, so that the ejector 3 can be fixed on the base 2, and the transportation of the product is facilitated. In this embodiment, the fixing nut 4 may be a standard component, which is convenient for processing.

Referring to fig. 1 and 4, further, the outer periphery of the injection pipe 3 is provided with a stepped surface 305, the stepped surface 305 is located on the side of the fixing nut 4 away from the base 2, and the diameter of the stepped surface 305 is larger than the inner diameter of the fixing nut 4. In this embodiment, the step surface 305 is arranged on the periphery of the injection pipe 3, so that the fixation nut 4 can be prevented from being excessively screwed out of the injection pipe 3, namely, the movement range of the fixation nut 4 can be limited by the step surface 305, and the adjustment and the use of the upper air inlet furnace end are facilitated.

Alternatively, a side surface of the base 2 facing the nozzle 1 is provided with a boss 201, and the mounting hole 203 is provided at an end surface of the boss 201. In this embodiment, a groove is formed on a side surface of the base 2 facing the nozzle 1, and the boss 201 is disposed at a bottom of the groove, so that the boss 201 is prevented from protruding out of a lower end surface of the base 2, further, the first side surface 202 is an end surface of the boss 201, and by disposing the boss 201, a length of the mounting hole 203 can be lengthened, thereby lengthening a length of the internal thread and enlarging an adjusting range of the injection pipe 3; the length of the internal thread of the mounting hole 203 is prolonged, so that the threaded connection strength of the mounting hole 203 and the injection pipe 3 can be ensured, and the injection pipe 3 is prevented from being separated from the mounting hole 203 in the use process.

Referring to fig. 3, further, a plurality of operation side surfaces 304 are provided on the outer periphery of the end of the injection pipe 3 far away from the base 2, all the operation side surfaces 304 are annularly arranged around the axis of the injection pipe 3 and are sequentially connected, and the operation side surfaces 304 are used for being abutted against the installation tool so that the installation tool drives the injection pipe 3 to rotate. In this embodiment, six operation side surfaces 304 are provided, and the six operation side surfaces 304 are annularly arranged and sequentially connected to form a hexagonal structure, when in assembly, two opposite operation side surfaces 304 can be clamped by a wrench, and an installer applies force to rotate the injection pipe 3 by the wrench; in other embodiments, the number of the operation sides 304 may be three, four, five or more, the number of the operation sides 304 is not limited, and the arrangement of the operation sides 304 may be designed according to the kind of the installation tool.

Preferably, the upper air inlet furnace end further comprises a fire cover 6, the fire cover 6 is arranged on one side surface of the base 2 far away from the nozzle 1, the fire cover 6 is covered outside the mounting hole 203, a fire outlet hole 601 is formed in the fire cover 6, and the central axis of the inner cavity of the fire cover 6, the central axis of the injection pipe 3 and the central axis of the nozzle 1 are overlapped. Through setting up the central axis of fire lid 6 inner chamber, the central axis of penetrating pipe 3 and the central axis three coincidence of nozzle 1, can make gas and air misce bene in penetrating pipe 3 as far as possible, and then make the gas of misce bene can spread in the inner chamber of fire lid 6 uniformly, improve combustion quality.

In this embodiment, the fire cover 6 is placed on the base 2, the fire cover 6 and the base 2 are respectively provided with concave-convex structures for the two to be clamped and fixed, so that the fire cover 6 and the base 2 are prevented from being displaced in the use process, the fire cover 6 comprises an outer ring fire dividing area 602 and a central fire dividing area 603, wherein central axes of the outer ring fire dividing area 602 and the central fire dividing area 603 coincide, and fire outlets 601 in the outer ring fire dividing area 602 and the central fire dividing area 603 are respectively distributed annularly and uniformly around the central axis of the fire cover 6.

In an alternative embodiment, the ejector 3 comprises an inlet chamber 301 and an ejector chamber connected, the inlet chamber 301 being of progressively decreasing diameter in the direction of flow of the fuel gas. Through setting up the flow direction along the gas, the diameter of air inlet 301 reduces gradually, and the gas that flows at a high speed carries out momentum exchange with the air for the gas velocity of flow reduces, and the air velocity of flow increases, makes the gas fully drive the air in the air supplement district 5 and gets into in the injection pipe 3, and then realizes gaseous mixing in the injection pipe 3, promotes combustion effect.

In another alternative embodiment, the injection pipe 3 comprises an air inlet cavity 301 and an injection cavity which are connected, the injection cavity further comprises a mixing cavity 302 and an air outlet cavity 303, the air inlet cavity 301 is communicated with the air outlet cavity 303 through the mixing cavity 302, the diameter of the air outlet cavity 303 is gradually increased along the flowing direction of fuel gas, the maximum diameter of the air outlet cavity 303 is D1, the diameter of the mixing cavity 302 is D2, and the maximum diameter of the air inlet cavity 301 is D3, wherein D3 is more than D1 and more than D2. By setting D3 & gtD 1 & gtD 21, when the air passes through the air inlet cavity 301, the cross sectional area of the air inlet cavity 301 is gradually reduced, and high-speed fuel gas and air perform momentum exchange, so that the flow speed of the fuel gas is reduced, the flow speed of the air is increased, and the air is sucked into the injection pipe 3 at a certain speed; in the mixing cavity 302, the gas speed distribution is quite uneven, the dynamic pressure of the gas in the flowing process is gradually reduced, the air dynamic pressure is increased, the speed of the gas-air mixed gas tends to be stable at the outlet of the mixing cavity 302, and meanwhile, the pressure is increased, so that the gas and the air are fully mixed; in the air outlet cavity 303, the cross section area of the air outlet cavity 303 is gradually increased, the flow rate of the mixed gas is gradually reduced, the pressure of the mixed gas is gradually increased, and the pressure of the mixed gas at the outlet of the injection pipe 3 is the pressure required by the gas stove during operation. In the above embodiment, the diameter of the air inlet cavity 301 may be equal to the diameter of the mixing cavity 302, and thus, D3 > D1. Gtoreq.D2 is combined with the two embodiments.

Alternatively, the mounting hole 203 includes a mounting section where the internal thread is provided and a guide section provided on a side of the mounting section away from the nozzle 1, the diameter of the guide section gradually becoming larger along the flow direction of the fuel gas. In this embodiment, the diameter of the inner cavity of the fire cover 6 is larger than the aperture of the mounting hole 203, and the diameter of the guiding section is gradually increased along the flowing direction of the fuel gas, so that the mixed gas of the fuel gas and the air can be uniformly diffused in the inner cavity of the fire cover 6, and the combustion effect is improved.

The upper air inlet furnace end of the embodiment can complete the air adjusting door function and the injection function of the upper air inlet furnace end only by the injection pipe 3 and the fixing nut 4, the number of parts is small, the part processing procedure is not complex, and for example, the fixing nut 4 can be a nut standard part.

The embodiment also provides a gas stove, which comprises the upper air inlet stove head in any embodiment. The upper air inlet furnace end in any embodiment has the advantages of small number of parts and simple structure, so that the gas stove in the embodiment has simple structure and low processing and assembling difficulty; the upper air inlet furnace end in any embodiment can conveniently adjust the air inflow, so the combustion effect of the gas stove in the embodiment is good.

In the specific content of the above embodiment, any combination of the technical features may be performed without contradiction, and for brevity of description, all possible combinations of the technical features are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing detailed description of the embodiments presents only a few embodiments of the present utility model, which are described in some detail and are not intended to limit the scope of the present utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The utility model provides an upward air inlet furnace end, its characterized in that, including nozzle (1), base (2) and injection pipe (3), the periphery of injection pipe (3) is provided with the external screw thread, run through on base (2) and be provided with mounting hole (203), the pore wall of mounting hole (203) is provided with the internal screw thread, the one end of injection pipe (3) is revolved and is screwed in mounting hole (203), the other end protrusion of injection pipe (3) in base (2) are close to one side of nozzle (1), just injection pipe (3) with nozzle (1) interval sets up, injection pipe (3) with form air supplement district (5) between nozzle (1), injection pipe (3) with interval adjustable between nozzle (1).

2. The upper air inlet furnace end according to claim 1, further comprising a fixing nut (4), wherein the fixing nut (4) is screwed on the periphery of the injection pipe (3), and the fixing nut (4) is abutted against one side surface of the base (2) close to the nozzle (1).

3. The upper air inlet furnace end according to claim 2, characterized in that a step surface (305) is arranged on the periphery of the injection pipe (3), the step surface (305) is positioned on one side of the fixing nut (4) away from the base (2), and the diameter of the step surface (305) is larger than the inner diameter of the fixing nut (4).

4. The upper air inlet furnace end according to claim 1, characterized in that a side surface of the base (2) facing the nozzle (1) is provided with a boss (201), and the mounting hole (203) is arranged on the end surface of the boss (201).

5. The upper air inlet furnace end according to claim 1, characterized in that the periphery of one end of the injection pipe (3) far away from the base (2) is provided with a plurality of operation side surfaces (304), and all the operation side surfaces (304) are annularly arranged around the axis of the injection pipe (3) and are sequentially connected.

6. The upper air inlet furnace end according to any one of claims 1 to 5, further comprising a fire cover (6), wherein the fire cover (6) is arranged on one side surface of the base (2) away from the nozzle (1), the fire cover (6) is covered outside the mounting hole (203), a fire outlet hole (601) is formed in the fire cover (6), and the central axis of the inner cavity of the fire cover (6), the central axis of the injection pipe (3) and the central axis of the nozzle (1) coincide.

7. The upper air inlet furnace end according to any one of claims 1-5, characterized in that the ejector tube (3) comprises an air inlet cavity (301) and an ejector cavity which are connected, and the diameter of the air inlet cavity (301) is gradually reduced along the flowing direction of the fuel gas.

8. The upper air inlet furnace end according to claim 7, wherein the injection cavity comprises a mixing cavity (302) and an air outlet cavity (303), the air inlet cavity (301) is communicated with the air outlet cavity (303) through the mixing cavity (302), the diameter of the air outlet cavity (303) is gradually increased along the flowing direction of fuel gas, the maximum diameter of the air outlet cavity (303) is D1, the diameter of the mixing cavity (302) is D2, and the maximum diameter of the air inlet cavity (301) is D3, wherein D3 is more than D1 and equal to or larger than D2.

9. The upper air inlet burner according to any one of claims 1-5, characterized in that the mounting hole (203) comprises a mounting section and a guiding section, the guiding section being arranged on the side of the mounting section remote from the nozzle (1), the guiding section having a diameter that gradually increases in the direction of flow of the gas.

10. A gas range comprising an upper inlet burner as claimed in any one of claims 1 to 9.