CN215372461U

CN215372461U - Nozzle structure and combustor

Info

Publication number: CN215372461U
Application number: CN202120838244.2U
Authority: CN
Inventors: 艾穗江; 高兴平; 谢鹏琰
Original assignee: Guangdong Macro Gas Appliance Co Ltd
Current assignee: Guangdong Macro Gas Appliance Co Ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-12-31
Anticipated expiration: 2031-04-22

Abstract

The utility model discloses a nozzle structure and a burner, comprising: the fuel gas mixing device comprises a nozzle front end and a nozzle rear end, wherein a fuel gas channel is arranged at the nozzle front end, and a mixing channel and an air inlet communicated with the mixing channel are arranged at the nozzle rear end; the nozzle is characterized in that the front end of the nozzle and the rear end of the nozzle are two separated discrete parts, the front end of the nozzle is provided with a connector, the rear end of the nozzle is provided with a connector matched with the connector, and the depth of the connector in the connector is adjustable. The nozzle adopts a two-section detachable structure, the front end of the nozzle and the rear end of the nozzle are connected with a connector through a connector, and the depth of the connector in the connector is adjusted to change the length of the nozzle so as to adjust the distance from the nozzle to the throat part of the ejector.

Description

Nozzle structure and combustor

Technical Field

The utility model relates to the technical field of combustors, in particular to a nozzle structure and a combustor.

Background

The existing gas cooker is generally an injection type burner, which mainly comprises a gas nozzle and an injection pipe. The gas nozzle is provided with a plurality of through holes as primary air inlets, so that gas and air are premixed for the first time. As shown in fig. 1 and 2, the conventional nozzle bypass hole is a straight hole. When cooking utensils normal use, the high-speed gas of high pressure can be followed the side hole and inhaled the air and mix with the gas when passing through the nozzle, and straight side hole can be directly followed the top in hole and near inhaled the air when adopting straight side hole, can exert an influence to the air that gets into the combustor base to it is big that the air that inhales is 90 air intake resistance with the gas flow direction, reduces the gas velocity of flow, is unfavorable for the air and mixes with the gas. Meanwhile, the air inlet at the side hole cannot be adjusted, the whole material of the nozzle is copper, the cost is high, and the distance from the nozzle to the throat part of the ejector cannot be adjusted.

A chinese utility model patent application with application number 201811602301.6 discloses a nozzle assembly of gas-cooker, including the nozzle, the nozzle is both ends open-ended cavity tube-shape spare. A plurality of primary air inlets are radially distributed on the nozzle. The outer surface of the nozzle is provided with an external thread, and the external thread is sleeved with an air conditioning piece. The air conditioning piece is a cylindrical piece with two open ends, and the inner surface of the air conditioning piece is provided with internal threads. The external thread of the nozzle cooperates with the internal thread of the air-conditioning piece, which can move axially on the nozzle. The air conditioning member may cover a part or all of the primary air inlet port after rotating on the nozzle. The air inlet of the nozzle assembly is controlled by an air adjusting part, so that the air inlet amount is adjusted, but the air inlet resistance of the nozzle assembly is high, and the length of the nozzle cannot be adjusted.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model aims to provide a nozzle structure capable of adjusting the distance from a nozzle to the throat part of an ejector.

Another object of the present invention is to provide a burner having the above nozzle structure.

In order to achieve the purpose, the utility model adopts the following technical scheme.

A nozzle arrangement, comprising: the fuel gas mixing device comprises a nozzle front end and a nozzle rear end, wherein a fuel gas channel is arranged at the nozzle front end, and a mixing channel and an air inlet communicated with the mixing channel are arranged at the nozzle rear end; the nozzle is characterized in that the front end of the nozzle and the rear end of the nozzle are two separated discrete parts, the front end of the nozzle is provided with a connector, the rear end of the nozzle is provided with a connector matched with the connector, and the depth of the connector in the connector is adjustable.

As a further explanation of the above scheme, the connection port extends to the position of the air inlet, and the air inlet can be partially or completely shielded by adjusting the depth of the connection head in the connection port.

As a further explanation of the above scheme, the connector is in threaded connection with the connector, an external connection thread is arranged on the periphery of the connector, and an internal connection thread matched with the external connection thread is correspondingly arranged in the connector.

As a further explanation of the above scheme, an insertion structure is provided between the connector and the connector, and the outer wall of the connector is tightly fitted with the inner wall of the connector, and a certain friction force is provided between the connector and the connector.

As a further explanation of the above scheme, a plurality of mutually matched buckle positioning structures are arranged between the outer wall of the connector and the inner wall of the connector, and the buckle positioning structures are a plurality of mutually matched concave-convex structures.

As a further explanation of the above scheme, the air inlet holes are oblique air inlet holes, and the oblique direction of the oblique air inlet holes is consistent with the gas flowing direction.

As a further explanation of the above scheme, an inclined surface is provided at the rear end of the nozzle, the air inlet end of the air inlet is located on the inclined surface, and the axis of the air inlet is perpendicular to the inclined surface.

As a further explanation of the above scheme, the gas channel includes an inlet channel, a pressurizing channel and an outlet channel; the pressure boost passageway is the tapered passageway, inlet channel with the great one end of tapered passageway is connected, the passageway of giving vent to anger with the less one end of tapered passageway is connected, the sectional area of the passageway of giving vent to anger is less than the sectional area of inlet channel.

As a further explanation of the above solution, a limiting step is formed at the transition between the connection port and the mixing channel, and the limiting step is used to limit the maximum depth of the connection head in the connection port.

A burner, comprising: a nozzle arrangement as claimed in any preceding claim.

The utility model has the beneficial effects.

The nozzle structure adopts a two-section detachable structure, the front end of the nozzle and the rear end of the nozzle are connected through a connector and a connector, and the depth of the connector in the connector is adjusted to change the length of the nozzle so as to adjust the distance from the nozzle to the throat of the ejector.

And secondly, the depth of the connector in the connecting port can be adjusted to partially or completely shield the air inlet hole, so that the primary air inflow of the nozzle structure can be adjusted.

And thirdly, the air inlet holes which are obliquely arranged can reduce the resistance when air is sucked, can also reduce the air inlet influence on the air door of the base, and simultaneously increases the length of the cross section of the air inlet holes and increases the adjusting distance.

Fourthly, the gas channel at the front end of the nozzle is provided with a pressurizing channel, so that negative pressure is formed when gas enters the mixing channel at the rear end of the nozzle, and resistance of air entering the mixing channel from the inclined air inlet hole is reduced.

Fifthly, the position of the air sucked by the air inlet hole in the prior art is above the nozzle, and the position of the air sucked by the air inlet hole is positioned behind the nozzle, so that the air inlet resistance of the air and the influence on the air inlet of the burner base are reduced, the air and the fuel gas are mixed more uniformly, and the reduction of smoke is facilitated; the nozzle structure only needs to ensure that the dimension of the heated nozzle front end is still high in precision, so that the nozzle front end is made of copper, and the nozzle rear end can be made of other cheap materials, so that the cost is reduced.

Drawings

Fig. 1 is a view showing a structure of a nozzle in the prior art.

Figure 2 shows a cross-sectional view of a prior art nozzle.

Fig. 3 is a structural view of a nozzle structure according to the present invention.

Fig. 4 is a view showing a front end structure of a nozzle of the nozzle structure according to the present invention.

Fig. 5 is a structural view of the rear end of the nozzle structure provided by the present invention.

Fig. 6 is a cross-sectional view of the nozzle structure provided by the present invention in a fully closed state of the slanted air inlet.

Fig. 7 is a sectional view of the nozzle structure provided by the present invention in a state where the inclined air inlet holes are fully opened.

Reference numerals indicate the same.

1: nozzle tip, 2: nozzle rear end, 3: an oblique air inlet hole.

11: external connection thread, 12: gas passage, 21: inner connecting thread, 22: a mixing channel.

Detailed Description

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the feature, and in the description of the utility model, "at least" means one or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the present application, unless otherwise specified or limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.

The following describes the embodiments of the present invention with reference to the drawings of the specification, so that the technical solutions and the advantages thereof are more clear and clear. The embodiments described below are exemplary and are intended to be illustrative of the utility model, but are not to be construed as limiting the utility model.

The first embodiment.

As shown in fig. 3 to 7, a nozzle structure includes: the gas burner comprises a nozzle front end 1 and a nozzle rear end 2, wherein a gas channel 12 is arranged on the nozzle front end 1, and a mixing channel 22 and an air inlet communicated with the mixing channel 22 are arranged on the nozzle rear end 2; the nozzle is characterized in that the nozzle front end 1 and the nozzle rear end 2 are two separated discrete parts, the nozzle front end 1 is provided with a connector, the nozzle rear end 2 is provided with a connector matched with the connector, and the depth of the connector in the connector is adjustable. The nozzle adopts a two-section detachable structure, and the length of the nozzle is changed by adjusting the depth of the connector at the connecting port, so that the distance from the nozzle to the throat part of the ejector is adjusted.

The connector extends to the position of the air inlet hole, and the depth of the connector in the connector can be adjusted to partially or completely shield the air inlet hole. The size of the air inlet is changed by adjusting the depth of the connector at the connecting port, so that the primary air inflow of the nozzle structure is adjusted.

In this embodiment, the front end of the nozzle is connected with the rear end of the nozzle by a screw, the surface of the connector is provided with an external connection screw 11, and the corresponding internal connection screw 12 is arranged in the connection port. The rear end of the nozzle is sleeved at the rear end of the nozzle and is in threaded connection, so that the rear end of the rotary nozzle can axially move on the front end of the nozzle, and in the moving process of the rear end of the nozzle, an oblique air inlet hole at the rear end of the nozzle is not shielded to be partially shielded and then to be completely shielded, so that the primary air inflow of the nozzle is adjusted, the length of the nozzle is changed, and the distance from the nozzle to the throat part of the ejector is adjusted. Of course, a person skilled in the art can adopt other connection structures according to actual situations, for example, an insertion structure is adopted between the connector and the connector, the outer wall of the connector is tightly matched with the inner wall of the connector, and a certain friction force is provided between the connector and the connector; or, mutually matched buckle positioning structures are arranged between the outer wall of the connector and the inner wall of the connector, and the buckle positioning structures are a plurality of mutually matched concave-convex structures; the present embodiment is not limited.

The air inlet is an oblique air inlet 3, and the oblique direction of the oblique air inlet 3 is consistent with the gas flowing direction. The air inlet holes which are obliquely arranged can reduce the resistance when air is sucked and can also reduce the air inlet influence on the air door of the base, and meanwhile, the oblique air inlet holes 3 can increase the length of the air inlet holes and the cross section of the wall of the mixing channel and increase the adjusting distance of one-time air inflow.

Preferably, the gas passageway 12 is including inlet channel, pressure boost passageway and the passageway of giving vent to anger that communicates in proper order, the pressure boost passageway is the toper passageway, inlet channel with the great one end of toper passageway is connected, the passageway of giving vent to anger with the less one end of toper passageway is connected, the sectional area of the passageway of giving vent to anger is less than the sectional area of inlet channel. The pressurizing channel is arranged to enable gas to form negative pressure when entering the mixing channel at the rear end of the nozzle, so that air enters the mixing channel from the inclined air inlet hole, and resistance is reduced.

The rear end 2 of the nozzle is provided with an inclined plane, the air inlet end of the air inlet is positioned on the inclined plane, and the axis of the air inlet is vertical to the inclined plane.

It is further preferred that a limiting step is formed at the transition between the connection opening and the mixing channel 22, which limiting step serves to limit the maximum depth of the connection head in the connection opening.

In the prior art, the position of the air sucked by the air inlet hole is above the nozzle, and the position of the air sucked by the oblique air inlet hole is behind the nozzle, so that the air inlet resistance of the air and the influence on the air inlet of the burner base are reduced, the air and the fuel gas are mixed more uniformly, and the reduction of smoke is facilitated; the nozzle structure only needs to ensure that the size of the front end of the nozzle is still high in precision after being heated, so that the front end of the nozzle is made of copper, and the rear end of the nozzle can be made of other cheaper materials such as aluminum materials or aluminum alloys, so that the cost is reduced.

Example two.

A burner comprising a nozzle arrangement according to embodiment one.

Compared with the prior art, the burner provided by the embodiment has all the advantages of the embodiment, and the details are not described herein. As for the specific structure of the burner, the existing or future structure can be adopted, and the detailed description is omitted.

It will be appreciated by those skilled in the art from the foregoing description of construction and principles that the utility model is not limited to the specific embodiments described above, and that modifications and substitutions based on the teachings of the art may be made without departing from the scope of the utility model as defined by the appended claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.

Claims

1. A nozzle arrangement, comprising: the fuel gas mixing device comprises a nozzle front end and a nozzle rear end, wherein a fuel gas channel is arranged at the nozzle front end, and a mixing channel and an air inlet communicated with the mixing channel are arranged at the nozzle rear end; the nozzle is characterized in that the front end of the nozzle and the rear end of the nozzle are two separated discrete parts, the front end of the nozzle is provided with a connector, the rear end of the nozzle is provided with a connector matched with the connector, and the depth of the connector in the connector is adjustable.

2. The nozzle structure of claim 1, wherein the connection port extends to a position of the air inlet hole, and the air inlet hole can be partially or completely shielded by adjusting a depth of the connection head in the connection port.

3. The nozzle structure of claim 1, wherein the connecting head is connected to the connecting port by a screw thread, an external connecting screw thread is provided on the outer circumference of the connecting head, and an internal connecting screw thread matching with the external connecting screw thread is correspondingly provided in the connecting port.

4. The nozzle structure as claimed in claim 1, wherein the connector and the connection port are connected by a plug structure, and the outer wall of the connector is tightly fitted with the inner wall of the connection port with a certain friction therebetween.

5. A nozzle arrangement according to claim 4, wherein a plurality of cooperating snap locating formations are provided between the outer wall of the connection head and the inner wall of the connection port, the snap locating formations being a plurality of cooperating male and female formations.

6. The nozzle structure of claim 1, wherein the air inlet holes are oblique air inlet holes, and the oblique direction of the oblique air inlet holes is consistent with the flowing direction of the fuel gas.

7. A nozzle arrangement according to claim 6, wherein an inclined surface is provided on the rear end of the nozzle, the inlet end of the inlet aperture being located on said inclined surface, the axis of the inlet aperture being perpendicular to said inclined surface.

8. The nozzle structure of claim 1, wherein the gas channel comprises an inlet channel, a pressurizing channel and an outlet channel which are sequentially communicated, the pressurizing channel is a conical channel, the inlet channel is connected with the larger end of the conical channel, the outlet channel is connected with the smaller end of the conical channel, and the sectional area of the outlet channel is smaller than that of the inlet channel.

9. A nozzle arrangement according to claim 1, wherein a limiting step is formed at the transition between the connecting port and the mixing channel, said limiting step serving to limit the maximum depth of the connecting head within the connecting port.

10. A burner, comprising: a nozzle arrangement as claimed in any one of claims 1 to 9.