Adjustable combustion nozzle

Abstract

The utility model belongs to the technical field of combustion nozzles, and particularly relates to an adjustable combustion nozzle which comprises an air distribution disc, a plurality of air distribution holes are formed in the air distribution disc in the circumferential direction, and a threaded connection through hole is formed in the middle of the air distribution disc. The air distribution disc is fixedly connected with an ignition needle and a flameout protection needle; an air outlet channel is formed in the middle of the air outlet seat, and the air outlet channel is sequentially provided with a straight line section and a gradually-opened section from back to front; the air outlet seat is connected with the threaded connection through hole of the air distribution plate, and external threads are arranged on the air outlet seat; a plurality of fire holes are formed in the fire cover, the fire cover is fixedly connected with the gas outlet seat, and combustible gas flows out from the fire holes through the gas inlet channel; and the flame adjusting cylinder is in threaded connection with the fire cover, and the extension length of the flame adjusting cylinder can be adjusted. Combustible gas is sprayed out of the fire cover through the gas outlet channel and is ignited through the ignition needle to form flames.

Description

Technical Field

[0001] The utility model belongs to the technical field of combustion nozzles, and in particular relates to an adjustable combustion nozzle. Background Art

[0002] A gas water heater, also known as a gas water boiler, is a gas appliance that uses gas as fuel and transfers heat to cold water flowing through a heat exchanger through combustion heating to achieve the purpose of preparing hot water.

[0003] It is mainly composed of valve body assembly, main burner, small fire burner, heat exchanger, safety device, etc. It may also include flue of flue-type water heater, forced exhaust device of forced exhaust water heater, etc. The valve body assembly controls the working procedure of the whole water heater, including water valve, gas valve, micro switch and igniter, etc.

[0004] The combustion head is an important component in the burner. The common combustion head cannot adjust the size of the jet flame according to needs; there are certain defects, and it is necessary to improve it. Utility Model Content

[0005] In view of the above technical problems, the utility model provides an adjustable combustion nozzle, which can adjust the flame size.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] An adjustable combustion nozzle, comprising:

[0008] An air distribution disc, wherein a circle of air distribution holes is arranged on the air distribution disc along the circumferential direction, and a threaded connection through hole is arranged in the middle of the air distribution disc; an ignition pin and a flameout protection pin are fixedly connected to the air distribution disc;

[0009] An air outlet seat, wherein an air outlet passage is provided in the middle of the air outlet seat, and the air outlet passage is a straight line section and a gradually opening section from the back to the front; the air outlet seat is connected to the threaded connection through hole of the air distribution disk, and an external thread is provided on the air outlet seat;

[0010] A fire cover, wherein a plurality of fire holes are provided on the fire cover, the fire cover is fixedly connected to the gas outlet seat, and the combustible gas flows out from the fire holes through the air inlet;

[0011] The flame regulating tube is threadedly connected to the fire cover, and the extension length of the flame regulating tube can be adjusted.

[0012] The fire cover is in the shape of a truncated cone.

[0013] The air outlet seat has a circle of protrusions, which can contact the air distribution disk.

[0014] It also includes an adjustment mechanism, which is connected to the flame adjustment tube and can be driven to rotate by the adjustment mechanism; the adjustment mechanism includes a gear ring, an adjustment column and a connecting block, the connecting block is plugged into the air distribution disk, and the air distribution disk is provided with corresponding plug-in holes, the gear ring is fixedly connected to the flame adjustment tube, the adjustment column is threadedly connected to the connecting block, one end of the adjustment column is fixed with a gear meshing with the gear ring, and the other end of the adjustment column is fixedly connected with a knob.

[0015] A connecting plate is fixed on the connecting block, and the connecting plate is fixedly connected to the air distribution disk by bolts; a notch connected to the connecting block is provided on the air outlet seat.

[0016] The adjustment mechanism also includes a wind shield, which is slidably connected to the air distribution disk and is located on one side of the air distribution hole; a support plate is fixedly connected to the wind shield, and the support plate is adsorbed on the knob through a magnet; the thread rotation direction of the adjustment column is the same as the thread rotation direction of the flame adjustment cylinder.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The combustible gas is ejected from the fire cover through the gas outlet and ignited by the ignition needle to form a flame. The fire cover is connected to a flame adjustment tube, and the size of the flame (the size of the spread) can be changed by adjusting the length of the flame adjustment tube.

[0019] The adjustment mechanism is provided to facilitate the adjustment of the extension length of the flame adjustment tube; the connection plate can also play the role of a limit pin to prevent the air outlet seat from loosening. The wind shield structure can change its position according to the position of the flame adjustment tube, and the two cooperate with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of one direction of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the utility model in another direction;

[0022] Figure 3 It is a sectional axonometric drawing of the utility model;

[0023] Figure 4 It is a sectional front view of the utility model;

[0024] Figure 5 This is a diagram showing the position change of the flame adjustment tube of the utility model;

[0025] Among them: 1 is an air distribution disc, 10 is an air distribution hole, 2 is an ignition needle, 3 is a flameout protection needle, 4 is an air outlet seat, 40 is a protrusion, 41 is a notch, 5 is an air outlet, 50 is a straight section, 51 is a gradually opening section, 6 is a fire cover, 7 is a flame adjustment tube, 8 is an adjustment mechanism, 80 is a gear ring, 81 is an adjustment column, 82 is a connecting block, 83 is a gear, 84 is a knob, 85 is a connecting plate, 86 is a wind shield, and 87 is a support plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1-5 As shown, an adjustable combustion nozzle includes an air distribution plate 1, an air outlet seat 4, a fire cover 6 and a flame adjustment tube 7. A circle of air distribution holes 10 are arranged on the air distribution plate 1 along the circumferential direction, and air can enter through the air distribution holes 10 to cooperate with combustion; an ignition needle 2 and a flameout protection needle 3 are fixedly connected to the air distribution plate 1.

[0028] An air outlet 5 is provided in the middle of the air outlet seat 4, and the air outlet 5 is composed of a straight section 50 and a gradually opening section 51 from the back to the front; that is, the combustible gas can pass through the straight section 50 and the gradually opening section 51 in sequence. Specifically, the gradually opening section 51 is in a bell-mouth shape, which can prevent the fully gasified combustible gas (such as methanol) in the combustible gas from remaining in the air outlet 5, that is, it can flow out through the fire cover 6 along the gradually opening section 51 (the nozzle needs to be installed horizontally).

[0029] The above-mentioned outlet seat 4 is connected to the threaded connection through hole of the air distribution plate 1. The outlet seat 4 is provided with an external thread, and a corresponding threaded connection through hole is provided in the middle of the air distribution plate 1. A plurality of fire holes are provided on the fire cover 6. The fire cover 6 is fixedly connected to the outlet seat 4. The combustible gas flows out from the fire holes through the air inlet and is ignited by the ignition needle 2. The flame adjustment tube 7 is threadedly connected to the fire cover 6. The extension length of the flame adjustment tube 7 can be adjusted, that is, the range of flame blocking (the size of the spread) can be changed, thereby changing the size of the flame (such as Figure 5 a, b).

[0030] Furthermore, the shape of the fire cover 6 is preferably a truncated cone.

[0031] Furthermore, a circle of protrusions 40 is formed on the air outlet seat 4. When the air outlet seat 4 is connected to the air distribution disk 1, the protrusions 40 can contact the air distribution disk 1 to play a tightening role.

[0032] Furthermore, the flame adjustment tube 7 can only be adjusted when it is not installed in the burner. If the flame adjustment tube 7 is located inside after installation, it cannot be adjusted again. Therefore, an adjustment mechanism 8 is also included, which is connected to the flame adjustment tube 7 and can drive the flame adjustment tube 7 to rotate; and even after installation, it can be adjusted as needed.

[0033] Specifically: the adjustment mechanism 8 includes a gear ring 80, an adjustment column 81 and a connecting block 82. The connecting block 82 is plugged into the air distribution disk 1, and a corresponding plug-in hole is provided on the air distribution disk 1. The gear ring 80 is fixedly connected to the flame adjustment tube 7, the adjustment column 81 is threadedly connected to the connecting block 82, one end of the adjustment column 81 is fixed with a gear 83 meshing with the gear ring 80, and the other end of the adjustment column 81 is fixedly connected with a knob 84. That is, after installation, the gear 83 and one end of the adjustment column 81 are both located inside, while the knob 84 and the other end of the adjustment column 81 are located outside. Therefore, after installation, the adjustment column 81 is driven to rotate by turning the knob 84, so that the gear 83 rotates and meshes with the gear ring 80, thereby driving the flame adjustment tube 7 to rotate accordingly, thereby changing its extended length.

[0034] Further, a connecting plate 85 is fixed on the connecting block 82. When the connecting block 82 is plugged into the air distribution disk 1, the connecting plate 85 is fixedly connected to the air distribution disk 1 by bolts, thereby preventing the connecting block 82 from falling off.

[0035] Furthermore, a notch 41 connected to the connecting block 82 is provided on the air outlet seat 4. When the air outlet seat 4 is connected to the air distribution disk 1, the notch 41 is aligned with the plug hole on the air distribution disk 1, and then the connecting block 82 is installed and inserted into the plug hole and the notch 41. That is, the connecting block 82 can also play the role of a limit pin to prevent the air outlet seat 4 from rotating at will and causing it to loosen.

[0036] Furthermore, the adjustment mechanism 8 further includes a windshield 86, which is slidably connected to the air distribution disc 1 and is located on one side of the air distribution hole 10; that is, the windshield 86 can block the air distribution hole 10. Specifically: a guide column is provided on the air distribution disc 1, and a corresponding through hole is provided on the windshield 86, and a sliding connection is achieved through the cooperation between the through hole and the guide column.

[0037] The windshield 86 is fixedly connected with a support plate 87, which is attracted to the knob 84 by a magnet; of course, the support plate 87 can also be rotatably connected to the knob 84, and the support plate 87 cannot move axially relative to the knob 84, and can only be driven to move up and down by rotation. The magnet or rotatable connection is selected according to the actual situation.

[0038] By turning the knob 84, the adjusting column 81 is driven to rotate, so that the gear 83 rotates and meshes with the gear ring 80, and then the flame adjusting tube 7 is driven to rotate accordingly to change its extension length. Since the adjusting column 81 and the connecting block 82 are threadedly connected, the adjusting column 81 will move up and down when it rotates, and the support plate 87 will also move up and down with it through the method of magnet adsorption or rotation connection. The movement of the support plate 87 can change the distance between it and the air distribution hole 10. If the distance is close, the air distribution hole 10 can be blocked (there is still a gap) to prevent air from entering, and vice versa, the obstruction can be reduced.

[0039] At the same time, the thread rotation direction of the adjustment column 81 is the same as that of the flame adjustment tube 7. That is, when the adjustment column 81 is rotated clockwise (the gear 83 also rotates clockwise), the adjustment column 81 moves up (the windshield 86 also moves up, and the distance between it and the air distribution hole 10 decreases), and the gear 83 meshes with the gear ring 80 to drive the gear ring 80 and the flame adjustment tube 7 to rotate counterclockwise, and the flame adjustment tube 7 moves down.

[0040] When the adjusting column 81 is rotated counterclockwise (the gear 83 also rotates counterclockwise), the adjusting column 81 moves downward (the wind shield 86 also moves downward, and the distance between it and the air distribution hole 10 increases), and the gear 83 meshes with the ring gear 80 to drive the ring gear 80 and the flame adjusting tube 7 to rotate clockwise, and the flame adjusting tube 7 moves upward.

[0041] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. An adjustable combustion nozzle, characterized in that: include: An air distribution disc (1), wherein a circle of air distribution holes (10) are arranged on the air distribution disc (1) along a circumferential direction, and a threaded connection through hole is arranged in the middle of the air distribution disc (1); an ignition pin (2) and a flameout protection pin (3) are fixedly connected to the air distribution disc (1); An air outlet seat (4), wherein an air outlet passage (5) is provided in the middle of the air outlet seat (4), and the air outlet passage (5) is composed of a straight line section (50) and a gradually opening section (51) from the back to the front; the air outlet seat (4) is connected to the threaded connection through hole of the air distribution plate (1), and an external thread is provided on the air outlet seat (4); A fire cover (6), wherein a plurality of fire holes are provided on the fire cover (6), the fire cover (6) is fixedly connected to the gas outlet seat (4), and the combustible gas flows out from the fire holes through the gas inlet duct; A flame adjustment tube (7) is threadedly connected to the fire cover (6), and the extension length of the flame adjustment tube (7) can be adjusted.

2. An adjustable combustion nozzle according to claim 1, characterized in that: The fire cover (6) is in the shape of a truncated cone.

3. An adjustable combustion nozzle according to claim 1, characterized in that: The air outlet seat (4) has a circle of protrusions (40), and the protrusions (40) can be in contact with the air distribution disk (1).

4. The adjustable combustion nozzle according to claim 1, characterized in that: The flame regulating tube (7) is also provided with an adjusting mechanism (8), the adjusting mechanism (8) being connected to the flame regulating tube (7), and the flame regulating tube (7) can be driven to rotate by the adjusting mechanism (8); the adjusting mechanism (8) comprising a gear ring (80), an adjusting column (81) and a connecting block (82); the connecting block (82) is plugged into the air distribution disk (1); the air distribution disk (1) is provided with a corresponding plugging hole; the gear ring (80) is fixedly connected to the flame regulating tube (7); the adjusting column (81) is threadedly connected to the connecting block (82); one end of the adjusting column (81) is fixedly provided with a gear (83) meshing with the gear ring (80); and the other end of the adjusting column (81) is fixedly provided with a knob (84).

5. An adjustable combustion nozzle according to claim 4, characterized in that: A connecting plate (85) is fixed on the connecting block (82), and the connecting plate (85) is fixedly connected to the air distribution disk (1) via bolts; and a notch (41) connected to the connecting block (82) is provided on the air outlet seat (4).

6. An adjustable combustion nozzle according to claim 4, characterized in that: The regulating mechanism (8) further comprises a wind shield (86), the wind shield (86) being slidably connected to the air distribution plate (1) and being located on one side of the air distribution hole (10); a support plate (87) being fixedly connected to the wind shield (86), the support plate (87) being adsorbed on the knob (84) via a magnet; and the thread rotation direction of the regulating column (81) is the same as the thread rotation direction of the flame regulating cylinder (7).

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