Ejecting assembly for combustor and combustion system

Abstract

An injection assembly for a combustor and a combustion system, the injection assembly comprising: an injection pipe (1) having a gas inlet (11), the length direction of the injection pipe (1) being recorded as a first axial direction; the nozzle (2) is provided with an inlet end and an outlet end (2b), the inlet end is used for being communicated with fuel gas source fluid, and the outlet end (2b) is inserted into the gas inlet (11) of the injection pipe (1) in the first axial direction and communicated with the inner space of the injection pipe (1); a mounting hole (12) penetrating through the wall thickness of the injection pipe (1) is formed in the position, close to the air inlet (11), of the pipe wall of the injection pipe (1). The injection assembly further comprises a pressing piece (3), and the pressing piece (3) penetrates through the mounting hole (12) to enable the nozzle (2) to abut against the edge of the air inlet (11) of the injection pipe (1). Compared with the prior art, the nozzle can be restrained in the transverse direction, and the nozzle is prevented from being separated from the injection pipe. And the angle of the nozzle can be adjusted by adjusting the length of the part, extending into the mounting hole, of the pressing piece.

Description

Technical Field

[0001] The utility model belongs to the technical field of household stoves, and in particular relates to an ejection component and a combustion system for a burner. Background Art

[0002] Existing ejection assemblies for burners, such as the Chinese utility model patent "Burner air intake system for stoves" with application number 202021576230.X (authorization announcement number CN212565884U) and the Chinese utility model patent "Stove burner and stove" with application number 202120553055.0 (authorization announcement number CN215175042U), disclose structures that include a burner head and an air intake valve, an ejection pipe is provided on the burner head, and a nozzle is provided on the air intake valve, which extends into the corresponding ejection pipe to input the gas into the ejection pipe.

[0003] The nozzle in the existing ejector assembly is plugged into the ejector tube, and there is a phenomenon that the nozzle accidentally detaches from the ejector tube. In order to ensure combustion efficiency, the nozzle and the ejector tube are generally required to be coaxially arranged, but the existing plug-in structure cannot ensure that the two are coaxial. Utility Model Content

[0004] The first technical problem to be solved by the utility model is to provide an ejection assembly for a burner which can improve the stability of the plug-in structure in view of the current status of the prior art.

[0005] The second technical problem to be solved by the utility model is to provide an ejection assembly for a burner so as to be able to adjust the angle of the nozzle.

[0006] The third technical problem to be solved by the utility model is to provide a combustion system having the above-mentioned ejection assembly.

[0007] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: an ejection assembly for a burner, comprising:

[0008] The ejector tube has an air inlet, and the length direction of the ejector tube is the first axial direction;

[0009] A nozzle having an inlet end and an outlet end, wherein the inlet end is used to communicate with a fuel gas source fluid, and the outlet end is inserted into the air inlet of the ejector tube along the first axial direction and communicates with the internal space of the ejector tube;

[0010] Features:

[0011] The wall of the ejector tube is provided with a mounting hole penetrating the wall thickness at a position adjacent to the air inlet;

[0012] The ejection assembly also includes:

[0013] The pressing piece passes through the mounting hole and presses the nozzle against the edge of the air inlet of the ejector tube.

[0014] In the utility model, the nozzle is pressed against the edge of the air inlet of the ejector tube by the cooperation of the pressing member and the nozzle, so that the nozzle can be restrained in the lateral direction to prevent the nozzle from being separated from the ejector tube. And the angle of the nozzle can be adjusted by adjusting the length of the pressing member extending into the installation hole.

[0015] Preferably, the mounting hole is a threaded hole, and the clamping member is an adapted screw, so that the length of the screw extending into the mounting hole can be adjusted steplessly, thereby facilitating the adjustment of the angle of the nozzle.

[0016] In the above scheme, preferably, the ejector tube includes an ejector tube body and an end plate provided at one end of the ejector tube body, and the center of the end plate is provided with the above-mentioned air inlet penetrating through the thickness of the plate.

[0017] Preferably, the nozzle is tubular, and the first end thereof, namely the outlet end, is inserted into the air inlet of the ejector tube, and the pressing member is pressed against the outer peripheral wall of the nozzle.

[0018] Furthermore, the nozzle and the ejector tube are arranged coaxially.

[0019] Furthermore, the edge of the air inlet of the ejector tube has a first portion relatively close to the mounting hole and a second portion relatively far from the mounting hole, and the nozzle is pressed against and fitted with the second portion.

[0020] To ensure the coaxiality between the nozzle and the ejector tube, preferably, the second portion of the edge of the air inlet is in an arc shape that matches the shape of the outer peripheral wall of the corresponding nozzle. In this way, the nozzle can fit well on the edge of the arc, which is conducive to ensuring the coaxiality between the nozzle and the ejector tube.

[0021] Preferably, the first portion of the edge of the air inlet is spaced opposite to the outer peripheral wall of the corresponding nozzle. Thus, the outlet end of the nozzle can be inserted into the air inlet from above the arc edge, and then the nozzle can be moved downward to fit the nozzle on the arc edge.

[0022] Furthermore, the first portion of the edge of the air inlet is in a straight line shape with both ends connected to corresponding arc ends respectively.

[0023] Preferably, the mounting hole is provided at the edge of the end plate and passes through a first portion of the edge of the air inlet.

[0024] In the above scheme, in order to ensure the amount of air injection, preferably, the end plate is also provided with an air inlet penetrating the thickness of the plate, and the air inlet is located at the periphery of the air inlet.

[0025] Preferably, there are at least two air inlets.

[0026] In the above schemes, preferably, the ejector tube is arranged horizontally, the mounting hole is arranged on the top wall of the ejector tube, and the central axis of the mounting hole intersects with the central axis of the ejector tube.

[0027] The technical solution adopted by the utility model to solve the second technical problem is: a combustion system, characterized by having the ejection component as described above.

[0028] The combustion system is used for a stove.

[0029] Compared with the prior art, the utility model has the advantages that the nozzle is pressed against the edge of the air inlet of the ejector tube by the cooperation between the pressing member and the nozzle, thereby restraining the nozzle in the lateral direction and preventing the nozzle from being separated from the ejector tube. The angle of the nozzle can be adjusted by adjusting the length of the pressing member extending into the mounting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a combustion system in an embodiment of the utility model;

[0031] Figure 2 A longitudinal cross-sectional view of a combustion system in an embodiment of the utility model;

[0032] Figure 3 It is a transverse cross-sectional view of a combustion system in an embodiment of the utility model;

[0033] Figure 4 It is a three-dimensional exploded view of the local structure of the combustion system in the embodiment of the utility model. DETAILED DESCRIPTION

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0035] like Figures 1 to 4 As shown in FIG. 1 , a preferred embodiment of an ejection assembly for a burner and a combustion system of the utility model is shown. The ejection assembly includes an ejection pipe 1 , a nozzle 2 and a pressing member 3 .

[0036] Among them, the ejector tube 1 is arranged horizontally, and the length direction of the ejector tube 1 is recorded as the first axial direction. The ejector tube 1 includes an ejector tube body extending along the first axial direction, an end plate 10 arranged at one end of the ejector tube body, and an air inlet 11 penetrating the plate thickness is arranged at the central position of the end plate 10. The edge of the air inlet 11 has a first part 111 located on the upper side and a second part 112 located on the lower side. The first part 111 is in a horizontally extending straight shape, and the second part is in a concave arc shape. The two ends of the second part are connected with the corresponding ends of the first part, and the edge of the connection is tangent to the corresponding second part. At the same time, an air inlet 13 penetrating the plate thickness is arranged at the outer position of the end plate 10. There are two air inlets 13, which are relatively located on the left and right sides of the air inlet 11. At the same time, a mounting hole 12 extending downward and directly connected to the air inlet 11 is arranged at the top edge of the end plate 10. The mounting hole 12 is a threaded hole, and the central axis of the mounting hole 12 intersects with the central axis of the ejector tube 1.

[0037] The nozzle 2 is in the shape of a circular tube and has an inlet end and an outlet end 2b. The inlet end is used to communicate with the fuel gas source fluid, and the outlet end 2b is inserted into the air inlet 11 of the ejector tube 1 along the first axial direction and communicates with the internal space of the ejector tube 1.

[0038] The clamping member 3 is a screw, which passes through the mounting hole 12 and acts on the top wall of the nozzle 2, pressing the nozzle 2 against the edge of the air inlet 11 of the ejector tube 1. At this time, the nozzle 2 is coaxially arranged with the ejector tube 1, and the bottom wall of the nozzle 2 is pressed against the second part 112 of the edge of the air inlet 11 and fits with the second part 112. The top wall of the nozzle 2 is spaced apart from the first part 111 of the edge of the corresponding air inlet 11.

[0039] The combustion system of this embodiment is used for a stove, and comprises a burner 4 and the above-mentioned ejection assembly. The burner 4 is of prior art and comprises a gas mixing chamber 40 . The inlet of the gas mixing chamber 40 is connected to the gas outlet of the ejection tube 1 .

[0040] When in use, the gas enters the ejector tube 1 through the nozzle 2 , and the air near the ejector tube air inlet 11 is sucked into the ejector tube through the air inlet 13 under the action of negative pressure, and is input into the burner 4 after mixing with the gas.

[0041] When installing the nozzle 2, first insert the outlet end 2b of the nozzle 2 into the air inlet 11, and then move the nozzle 2 downward to fit the nozzle 2 on the arc-shaped edge of the air inlet 11. Then rotate the screw, and the lower end of the screw is pressed against the top wall of the nozzle, so that the coaxiality of the nozzle 2 and the ejector tube 1 can be adjusted, and the nozzle is restrained to improve the stability of the overall structure.

[0042] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0043] The term "vertical" is also used in the specification and claims of the present utility model, which means basically along the up and down direction, and is not limited to the vertical direction only, and can also be slightly inclined relative to the vertical direction.

[0044] The term "radial" is also used in the specification and claims of the present utility model, which means basically along the inward and outward direction, and is not limited to the radial direction passing through the center of the circle, and can also be slightly deviated from the radial direction.

Claims

1. An ejection assembly for a burner, comprising: The ejector tube (1) has an air inlet (11), and the length direction of the ejector tube (1) is referred to as a first axial direction; The nozzle (2) has an inlet end and an outlet end (2b), wherein the inlet end is used to communicate with the fuel gas source fluid, and the outlet end (2b) is inserted into the air inlet (11) of the ejector tube (1) along the first axial direction and communicates with the internal space of the ejector tube (1); Features: The wall of the ejector tube (1) is provided with a mounting hole (12) penetrating the wall thickness thereof at a position adjacent to the air inlet (11); The ejection assembly also includes: The pressing piece (3) passes through the mounting hole (12) and presses the nozzle (2) against the edge of the air inlet (11) of the ejector tube (1).

2. The ejection assembly according to claim 1, characterized in that: The mounting hole (12) is a threaded hole, and the pressing piece (3) is a matching screw.

3. The ejection assembly according to claim 1, characterized in that: The ejector tube (1) comprises an ejector tube body and an end plate (10) arranged at one end of the ejector tube body. The center of the end plate (10) is provided with the air inlet (11) penetrating the thickness of the plate.

4. The ejection assembly according to claim 3, characterized in that: The nozzle (2) is tubular, and its first end, namely the outlet end (2b), is inserted into the air inlet (11) of the ejector tube (1), and the pressing member (3) is pressed against the outer peripheral wall of the nozzle (2).

5. The ejection assembly according to claim 4, characterized in that: The nozzle (2) is arranged coaxially with the ejector tube (1).

6. The ejection assembly according to claim 4, characterized in that: The edge of the air inlet (11) of the ejector tube (1) comprises a first portion (111) relatively close to the mounting hole (12) and a second portion (112) relatively far from the mounting hole (12), and the nozzle (2) is pressed against the second portion (112) and fits with the second portion (112).

7. The ejection assembly according to claim 6, characterized in that: The second portion (112) of the edge of the air inlet (11) is in an arc shape that matches the shape of the outer peripheral wall of the corresponding nozzle (2).

8. The ejection assembly according to claim 7, characterized in that: The first portion (111) of the edge of the air inlet (11) is spaced apart from and opposite to the outer peripheral wall of the corresponding nozzle (2).

9. The ejection assembly according to claim 8, characterized in that: The first portion (111) of the edge of the air inlet (11) is in a straight line shape with both ends connected to corresponding arc ends.

10. The ejection assembly according to claim 6, characterized in that: The mounting hole (12) is arranged at the edge of the end plate (10) and passes through the first portion (111) of the edge of the air inlet (11).

11. The ejection assembly according to claim 3, characterized in that: The end plate (10) is also provided with an air inlet (13) penetrating the thickness of the plate, and the air inlet (13) is located at the periphery of the air inlet (11).

12. The ejection assembly according to claim 11, characterized in that: There are at least two air inlets (13).

13. The ejection assembly according to any one of claims 1 to 12, characterized in that: The ejector tube (1) is arranged horizontally, the mounting hole (12) is arranged on the top wall of the ejector tube (1), and the central axis of the mounting hole (12) intersects with the central axis of the ejector tube (1).

14. A combustion system, characterized in that A spray assembly as claimed in any one of claims 1 to 13.

15. The combustion system according to claim 14, characterized in that: The combustion system is used for a stove.

Images