Adjustable air inlet combustion device and stove combustor

Abstract

The adjustable air inlet combustion device comprises a nozzle, a fire cover seat, a fire cover with a lower opening, an injection pipe and an adjusting air pipe, the fire cover seat comprises a cavity with an upper opening, a counter bore, a tubular seat and an outer connector, and the injection pipe comprises an inverted cone frustum diffusion cavity with an upper opening, an annular edge plate and a pipe body part. Internal threads are arranged in the lower end of the pipe body part; the annular edge plate is embedded into the counter bore, the inverted cone frustum diffusion cavity is located in the cavity, the pipe body part penetrates through the pipe-shaped base to stretch out, the external thread and the internal thread of the adjusting air pipe are screwed, and the nozzle is opposite to the adjusting air pipe. The adjusting air duct and the injection pipe are connected in a threaded mode, the adjusting air duct rotates to adjust the length of entering and extending out of the injection pipe, the distance between the adjusting air duct and the nozzle is adjusted, operation is convenient, and no tool is needed.

Description

Technical Field

[0001] The utility model relates to a stove combustion device. Background Art

[0002] The current existing technology, Chinese patent 201921715200.X, is a damper-free adjustable combustion system structure, comprising a fixed bracket, a fixed seat is provided at the bottom of the fixed bracket, a gas nozzle is installed on the top of the fixed seat, a gas inlet connected to the gas nozzle is provided on the fixed seat, and a mounting tube coaxial with the gas nozzle is provided on the top of the fixed bracket, and a gas channel that can slide up and down is installed in the mounting tube. The problems are: (1) the gas channel moves up and down to adjust the air, and requires a positioning mechanism for positioning, which has a complex structure; (2) the gas channel moves up and down, causing the space between the combustion fire cover and the gas chamber to change, resulting in unstable power. Utility Model Content

[0003] The utility model aims to provide an adjustable air inlet combustion device, which has the characteristics of simple structure, automatic positioning of the adjustable air duct and stable power.

[0004] The utility model is realized as follows: an adjustable air inlet combustion device, which is special in that it includes a nozzle, a fire cover seat, a fire cover with a lower opening, an ejector pipe and an adjusting air duct,

[0005] The fire cover seat includes an upper opening cavity, a countersunk hole, a tubular seat and an external interface.

[0006] The ejector tube comprises an inverted truncated cone diffusion chamber with an upper opening, an annular edge plate and a tube body, and an internal thread is arranged in the lower end of the tube body;

[0007] The annular edge plate is embedded with the countersunk hole, the inverted frustum diffusion cavity is located in the cavity, the tube body extends through the tubular seat, the external thread of the regulating air duct is screwed with the internal thread, and the nozzle is opposite to the regulating air duct.

[0008] The adjustable air inlet combustion device is special in that a neck is provided on the tube body, and the bottom plate of the cavity supports the lower end of the neck.

[0009] The adjustable air inlet combustion device is special in that at least two flow dividers along the generatrix are arranged in the inverted frustum diffusion chamber.

[0010] The adjustable air inlet combustion device is special in that a positioning block is provided at the upper end of the cavity of the fire cover seat, a positioning groove is provided on the inner wall of the fire cover, and the positioning block and the positioning groove are embedded.

[0011] A stove burner, which is special in that it comprises the above-mentioned adjustable air inlet combustion device, a burner head, an outer ring gas groove and an outer ring fire cover,

[0012] The furnace head includes a base plate, an outer ring ejector tube, an axial gas and fuel gas premixing channel, a support frame plate, a base plate and a central air inlet channel arranged on the base plate. The base plate is provided with a device fixing part, and the device fixing part is provided with a plug hole;

[0013] An axial air inlet interface is provided on the outer ring gas groove;

[0014] The upper end of the axial gas premixing channel is inserted into the axial gas inlet interface, and the screw passes through the seat plate and is screwed into the axial gas inlet interface;

[0015] The fire cover seat is fixed on the device fixing part, and the tubular seat is inserted into the plug hole, and the nozzle is connected with the air outlet end of the central air inlet channel; the regulating air duct is located in the space between the seat plate and the base plate.

[0016] The stove burner is special in that the device fixing part comprises a fixing cavity with an upper opening arranged on the seat plate and the plug-in hole arranged on the bottom plate of the fixing cavity.

[0017] The fire cover seat is provided with an annular cavity surrounding the lower part of the cavity and a flange provided at the lower end of the outer ring wall plate of the annular cavity.

[0018] The bottom of the fire cover seat is inserted into the fixed cavity, the upper end of the fixed cavity is inserted into the annular cavity, and the flange is fitted with the seat plate.

[0019] The stove burner described above is special in that: the bottom plate of the fixed cavity is provided with an inner screw hole surrounding the plug hole and an outer screw hole surrounding the fixed cavity;

[0020] The cavity bottom plate is provided with an inner connection hole, and the flange is provided with an outer connection hole;

[0021] The screw passes through the inner connection hole and is screwed into the inner screw hole, and the screw passes through the outer connection hole and is screwed into the outer screw hole.

[0022] The utility model discloses a stove burner, wherein an adjusting air duct and an ejection pipe are connected in a threaded connection mode, and the adjusting air duct can be rotated to adjust the length of the ejection pipe extending therefrom, thereby realizing the adjustment of the distance between the adjusting air duct and the nozzle, and the operation is convenient and no tools are required. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional view of the utility model.

[0024] Figure 2 yes Figure 1 A-A view of.

[0025] Figure 3 It is one of the three-dimensional exploded views of the utility model.

[0026] Figure 4 This is the second three-dimensional exploded view of the present utility model.

[0027] Figure 5 It is a stereogram of the utility model. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example 1

[0031] like Figure 1 As shown, an adjustable air inlet combustion device comprises a nozzle 1, a fire cover seat 2, a fire cover 3 with a lower opening, an ejector pipe 4 and an adjustable air duct 5.

[0032] The fire cover seat 2 comprises an upper opening cavity 21, a countersunk hole 22, a tubular seat 23 and an external interface 24. The tubular seat 23 is arranged on the bottom plate of the cavity 21 and communicates with the cavity 21.

[0033] The ejector tube 4 comprises an inverted truncated cone diffusion chamber 41 with an upper opening, an annular edge plate 42 and a tube body 43. The annular edge plate 42 surrounds the upper opening end of the inverted truncated cone diffusion chamber 41, and an internal thread is provided in the lower end of the tube body 43.

[0034] The annular edge plate 42 is engaged with the counterbore 22, the inverted truncated cone diffusion chamber 41 is located in the chamber body 21, the tube body 43 extends through the tubular seat 23, the external thread of the regulating air duct 5 is screwed with the internal thread of the tube body 43, and the nozzle 1 is opposite to the regulating air duct 5. The regulating air duct 5 is rotated, and the regulating air duct 5 moves upward or downward relative to the nozzle 1 to adjust the air intake volume.

[0035] As a further improvement of the present utility model: a neck 431 is provided on the tube body 43 , and the bottom plate of the cavity 21 supports the lower end of the neck 431 .

[0036] As a further improvement of the present invention: two flow dividers 411 are provided along the generatrix in the inverted frustum diffusion chamber 41, and three, or more than four, may also be provided.

[0037] As a further improvement of the utility model: a positioning block 211 is provided at the upper end of the cavity 21 of the fire cover seat 2, and a positioning groove 31 is provided on the inner wall of the fire cover 3, and the positioning block 211 and the positioning groove 31 are embedded.

[0038] Example 2

[0039] like Figure 1 , Figure 2 , Figure 3 As shown, a stove burner includes an adjustable air inlet combustion device, a burner head 6, an outer ring gas groove 7 and an outer ring fire cover 8.

[0040] The burner head 6 includes a base plate 61, an outer ring ejector tube 62, an axial gas and gas premixing channel 63, a support frame plate 64, a base plate 65 and a central air inlet channel 66 provided on the base plate 65. The lower end of the axial gas channel is connected and fixed to the outer ring ejector tube 62, and the upper end intersects with the base plate 61; one end of the support frame plate is fixed to the base plate, and the other end is fixed to the base plate 65, and the other end of the base plate is fixed to the outer ring ejector tube. A device fixing part is provided on the base plate 61, and a plug hole 67 is provided on the device fixing part; a nozzle mounting hole is provided at the gas outlet end of the central air inlet channel 66;

[0041] An axial air inlet interface 71 is provided on the outer ring gas groove 7, and an inner countersunk hole is provided on the axial air inlet interface 71;

[0042] The upper end of the axial gas premixing passage 63 is inserted into the inner countersunk hole of the axial gas inlet interface 71, and the screw passes through the seat plate 61 and is screwed into the axial gas inlet interface 71;

[0043] The fire cover seat 2 is fixed on the fixed part of the device, and the tubular seat 23 is inserted into the plug hole 67, and the nozzle 1 is screwed into the nozzle mounting hole of the central air inlet channel 66; the regulating air duct 5 is located in the space between the seat plate 61 and the base plate 65.

[0044] As a further improvement of the present invention: the device fixing portion includes an upper opening fixing cavity 68 provided on the seat plate 61 and the plug-in hole 67 provided on the bottom plate of the fixing cavity 68.

[0045] The fire cover seat 2 is provided with an annular cavity 25 surrounding the lower part of the cavity 21 and a flange 26 provided at the lower end of the outer ring wall plate of the annular cavity.

[0046] The bottom of the fire cover seat 2 is inserted into the fixing cavity 68 , the upper end of the fixing cavity 68 is inserted into the annular cavity 25 , and the flange 26 is fitted with the seat plate 61 .

[0047] The bottom plate of the fixing cavity 68 is provided with an inner screw hole surrounding the plug hole 67 and an outer screw hole surrounding the fixing cavity;

[0048] The bottom plate of the cavity 21 is provided with an inner connection hole, and the flange 26 is provided with an outer connection hole;

[0049] The screw passes through the inner connection hole and is screwed into the inner screw hole, and the screw passes through the outer connection hole and is screwed into the outer screw hole.

[0050] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An adjustable air inlet combustion device, characterized in that: It includes a nozzle, a fire cover seat, a fire cover with a lower opening, an ejector pipe and an adjusting air duct. The fire cover seat includes an upper opening cavity, a countersunk hole, a tubular seat and an external interface. The ejector tube comprises an inverted truncated cone diffusion chamber with an upper opening, an annular edge plate and a tube body, and an internal thread is arranged in the lower end of the tube body; The annular edge plate is embedded with the countersunk hole, the inverted frustum diffusion cavity is located in the cavity, the tube body extends through the tubular seat, the external thread of the regulating air duct is screwed with the internal thread, and the nozzle is opposite to the regulating air duct.

2. The adjustable air inlet combustion device according to claim 1, characterized in that: The tube body is provided with a neck, and the bottom plate of the cavity supports the lower end of the neck.

3. The adjustable air inlet combustion device according to claim 1, characterized in that: At least two flow dividers along the generatrix are arranged in the inverted frustum diffusion chamber.

4. The adjustable air inlet combustion device according to claim 1, characterized in that: A positioning block is provided at the upper end of the cavity of the fire cover seat, and a positioning groove is provided on the inner wall of the fire cover, and the positioning block and the positioning groove are embedded.

5. A stove burner, characterized in that: It comprises an adjustable air inlet combustion device, a burner head, an outer ring gas groove and an outer ring fire cover as claimed in any one of claims 1 to 4, The furnace head includes a base plate, an outer ring ejector tube, an axial gas and fuel gas premixing channel, a support frame plate, a base plate and a central air inlet channel arranged on the base plate. The base plate is provided with a device fixing part, and the device fixing part is provided with a plug hole; An axial air inlet interface is provided on the outer ring gas groove; The upper end of the axial gas premixing channel is inserted into the axial gas inlet interface, and the screw passes through the seat plate and is screwed into the axial gas inlet interface; The fire cover seat is fixed on the fixed part of the device, and the tubular seat is inserted into the plug hole, and the nozzle is connected with the air outlet end of the central air inlet channel; the regulating air duct is located in the space between the seat plate and the base plate.

6. A stove burner according to claim 5, characterized in that: The device fixing part comprises a fixing cavity with an upper opening arranged on the seat plate and the plug-in hole arranged on the bottom plate of the fixing cavity. The fire cover seat is provided with an annular cavity surrounding the lower part of the cavity and a flange provided at the lower end of the outer ring wall plate of the annular cavity. The bottom of the fire cover seat is inserted into the fixed cavity, the upper end of the fixed cavity is inserted into the annular cavity, and the flange is fitted with the seat plate.

7. A stove burner according to claim 6, characterized in that: The bottom plate of the fixing cavity is provided with an inner screw hole surrounding the plug-in hole and an outer screw hole surrounding the fixing cavity; The cavity bottom plate is provided with an inner connection hole, and the flange is provided with an outer connection hole; The screw passes through the inner connection hole and is screwed into the inner screw hole, and the screw passes through the outer connection hole and is screwed into the outer screw hole.

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