Inclined horizontal type smoke exhaust subassembly of fan

Abstract

A draught fan inclined horizontal type smoke exhaust subassembly comprises an exhaust fume collecting hood, a draught fan and a smoke exhaust pipe, the draught fan comprises a volute, a motor and a centrifugal wind wheel, a top plate of the exhaust fume collecting hood comprises a horizontal plate part and an inclined plate part, and the inclined plate part is provided with a smoke exhaust hole; the smoke exhaust pipe comprises an inclined pipe part and a straight exhaust pipe part, the axis of the straight exhaust pipe part is perpendicular to the horizontal plane, and the intersection of the inclined pipe part and the straight exhaust pipe part is chamfered; a front volute plate of the volute is attached and fixed to the inclined plate part, and a flow guide opening in the front volute plate is in butt joint with the smoke exhaust hole and communicates with the smoke exhaust hole; and the inclined pipe part is fixed with an air outlet of the fan. After the smoke enters the smoke collecting hood, the fan exhausts the smoke, so that the impact between the smoke and the top of the smoke collecting hood is reduced, and the noise is reduced; the smoke exhaust pipe is formed by matching the inclined pipe part and the straight pipe part, the smoke resistance is small, and smoke exhaust is smooth.

Description

Technical Field

[0001] The utility model relates to a gas water heater, in particular to a smoke exhaust device. Background Art

[0002] The current existing technology, Chinese patent 202220337691.4, a top-draw water heater, comprising: a shell, a low-nitrogen burner, a heat exchanger and a horizontal fan arranged in the shell from bottom to top, and a gas distribution device connected to the low-nitrogen burner; characterized in that the horizontal fan comprises: a smoke hood connected to the heat exchanger, a volute connected to the smoke hood, and a motor arranged on the volute; a smoke exhaust pipe for exhausting smoke is provided on the volute, and a convex bulge cooperating with the fan is provided on the top wall of the shell. The problems are: the smoke exhaust pipe occupies a large space, and the smoke exhaust hole pipe on the top plate of the shell is biased to one end, which is poor in general use; the smoke exhaust direction is perpendicular to the smoke exhaust direction of the fan, and the noise is large. Utility Model Content

[0003] The utility model aims to provide a fan oblique horizontal smoke exhaust part installation, which has the characteristics of strong versatility and low noise.

[0004] The utility model is implemented as follows: a fan oblique horizontal smoke exhaust device, including a smoke hood, a fan and a smoke exhaust pipe, the fan includes a volute, a motor and a centrifugal wind wheel, and its special features are: the top plate of the smoke hood includes a horizontal plate part and an oblique plate part, and the oblique plate part is provided with a smoke exhaust hole;

[0005] The smoke exhaust pipe comprises an oblique pipe portion and a straight pipe portion, the axis of the straight pipe portion is perpendicular to the horizontal plane, and the intersection of the oblique pipe portion and the straight pipe portion is rounded;

[0006] The front volute of the volute is fitted and fixed with the inclined plate part, the air guide port and the smoke exhaust hole on the front volute are butted and communicated; the inclined pipe part and the air outlet of the fan are fixed.

[0007] The fan oblique horizontal smoke exhaust device is characterized in that: the smoke collecting hood includes a front wall plate, a rear wall plate, a top plate, a left end plate and a right end plate,

[0008] The top plate, the left end plate and the right end plate are made of metal plates in one piece.

[0009] The above-mentioned fan oblique horizontal smoke exhaust part is special in that: the air outlet end of the oblique pipe part is provided with an inner interface and an arc-shaped stop protrusion; the axis of the inner interface is perpendicular to the horizontal plane;

[0010] The straight pipe part is provided with an annular protrusion, and the straight pipe part above the annular protrusion serves as an interface;

[0011] The inner interface is inserted into the lower end of the straight-discharge pipe part and fixed, and the arc-shaped protrusion supports the lower end of the straight-discharge pipe part.

[0012] The oblique horizontal smoke exhaust device of the fan is special in that the oblique pipe part is made of two half-bodies rolled.

[0013] The described horizontal and oblique smoke exhaust device of the fan is special in that: the described straight exhaust pipe is provided with a smoke backflow prevention device.

[0014] The above-mentioned fan oblique horizontal smoke exhaust part is special in that: the anti-backflow smoke device comprises a cylindrical seat with an upper opening, two semicircular smoke exhaust holes arranged on the bottom plate of the cylindrical seat, a fixed axis and two semicircular air door plates, and the semicircular smoke exhaust holes are provided with an annular flange;

[0015] The semicircular air door plate is hinged with the fixed axis, the fixed axis is opposite to the gap between the two semicircular smoke exhaust holes, the two ends are fixed with the cylindrical seat, and the semicircular air plate is matched with the flange.

[0016] The special feature of the oblique and horizontal smoke exhaust device of the fan is that: among the two semicircular damper plates, a middle hinge sleeve is provided in the middle of the diameter side of one semicircular damper plate, and two end hinge sleeves are provided on the diameter side of the other semicircular damper plate, and the middle hinge sleeve is inserted between the two end hinge sleeves.

[0017] The above-mentioned fan oblique horizontal smoke exhaust device is special in that: the upper end of the cylindrical seat is provided with two limit plates at both ends of a diameter line, and the limit plates cooperate with the semicircular damper plates.

[0018] The utility model discloses a fan oblique horizontal smoke exhaust part installation. Due to the adoption of such a structure, after the smoke enters the smoke collecting hood, the fan draws air, thereby reducing the impact between the smoke and the top of the smoke collecting hood and reducing the noise; the smoke exhaust pipe is matched with the oblique pipe part and the straight pipe part, the smoke resistance is small and the smoke exhaust is smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of the utility model.

[0020] Figure 2 It is a stereogram of the utility model.

[0021] Figure 3 It is one of the three-dimensional exploded views of the utility model.

[0022] Figure 4 This is the second three-dimensional exploded view of the present utility model. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] like Figure 1 As shown, a fan oblique horizontal smoke exhaust device includes a smoke collecting hood 1 with a lower opening, a fan 2 and a smoke exhaust pipe 3, the fan 2 includes a volute 21, a motor 22 and a centrifugal wind wheel 23, the top plate of the smoke collecting hood 1 includes a horizontal plate portion 11 and an inclined plate portion 12, and the inclined plate portion 12 is provided with a smoke exhaust hole 121;

[0026] The smoke exhaust pipe 3 includes an oblique pipe portion 31 and a straight pipe portion 32, the axis of the straight pipe portion 32 is perpendicular to the horizontal plane, and the intersection of the oblique pipe portion 31 and the straight pipe portion 32 is rounded;

[0027] The front volute of the volute 21 is fitted and fixed to the inclined plate portion 12, the guide port on the front volute 12 is butted and connected to the smoke exhaust hole 121; the inclined pipe portion 31 is fixed to the air outlet of the fan 2. With such a design, the smoke exhaust pipe hole of the shell of the gas water heater is located in the middle of the top plate, which is suitable for the design of most manufacturers.

[0028] As a further improvement of the utility model: the smoke collecting hood 1 comprises a front wall plate 13, a rear wall plate 14, a top plate 15, a left end plate 16 and a right end plate 17,

[0029] The top plate 15, the left end plate 16 and the right end plate 17 are made of metal plates in one piece.

[0030] As a further improvement of the utility model: the air outlet end of the inclined tube portion 31 is provided with an inner port 311 and an arc-shaped stop protrusion 312; the axis of the inner port 311 is perpendicular to the horizontal plane;

[0031] The straight pipe part 32 is provided with an annular protrusion 321, and the straight pipe part 32 above the annular protrusion 321 serves as an interface;

[0032] The inner port 321 is inserted into the lower end of the straight pipe portion 32 and fixed, and the arc-shaped protrusion 312 supports the lower end of the straight pipe portion 32 .

[0033] The oblique tube portion 31 is made of two half bodies rolled.

[0034] As a further improvement of the utility model: the straight pipe portion 32 is provided with a smoke backflow prevention device;

[0035] The anti-backflow smoke device comprises a cylindrical seat 41 with an upper opening, two semicircular smoke exhaust holes 42 arranged on the bottom plate of the cylindrical seat, a fixed shaft 43 and two semicircular damper plates 44, and an annular flange 421 is arranged on the semicircular smoke exhaust hole 42;

[0036] The semicircular air damper plate 44 is hinged to the fixed shaft 43 . The fixed shaft 43 is opposite to the gap between the two semicircular smoke exhaust holes and both ends are fixed to the cylindrical seat 41 . The semicircular air damper plate 44 is matched with the annular flange 421 .

[0037] Among the two semicircular damper plates 44 , a middle hinge sleeve 441 is provided in the middle of the diameter side of one semicircular damper plate 44 , and two end hinge sleeves 442 are provided on the diameter side of the other semicircular damper plate 44 , and the middle hinge sleeve 441 is inserted between the two end hinge sleeves 442 .

[0038] The upper end of the cylindrical seat 41 is provided with two limit plates 411 at both ends of a diameter line, and the limit plates cooperate with the semicircular damper plates. Figure 1 As shown, in the smoke exhaust state, the semicircular damper plate cooperates with the limiting plate 411 to stop.

[0039] 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. A fan oblique horizontal smoke exhaust device, comprising a smoke collecting hood, a fan and a smoke exhaust pipe, wherein the fan comprises a volute, a motor and a centrifugal impeller, characterized in that: The top plate of the smoke hood includes a horizontal plate portion and an inclined plate portion, and the inclined plate portion is provided with a smoke exhaust hole; The smoke exhaust pipe comprises an oblique pipe portion and a straight pipe portion, the axis of the straight pipe portion is perpendicular to the horizontal plane, and the intersection of the oblique pipe portion and the straight pipe portion is rounded; The front volute of the volute is fitted and fixed with the inclined plate part, the air guide port and the smoke exhaust hole on the front volute are butted and communicated; the inclined pipe part and the air outlet of the fan are fixed.

2. The fan oblique horizontal smoke exhaust device according to claim 1 is characterized in that: The air outlet end of the oblique tube portion is provided with an inner interface and an arc-shaped stop protrusion; the axis of the inner interface is perpendicular to the horizontal plane; The straight pipe part is provided with an annular protrusion, and the straight pipe part above the annular protrusion serves as an interface; The inner interface is inserted into the lower end of the straight-discharge pipe part and fixed, and the arc-shaped protrusion supports the lower end of the straight-discharge pipe part.

3. The fan oblique horizontal smoke exhaust device according to claim 2 is characterized in that: The oblique tube portion is made of two half bodies rolled.

4. The fan oblique horizontal smoke exhaust device according to claim 1 is characterized in that: The smoke collecting hood comprises a front wall plate, a rear wall plate, a top plate, a left end plate and a right end plate. The top plate, the left end plate and the right end plate are made of metal plates in one piece.

5. The fan oblique horizontal smoke exhaust assembly according to claim 1, 2, 3 or 4, characterized in that: The straight discharge pipe portion is provided with a smoke backflow prevention device.

6. The fan oblique horizontal smoke exhaust device according to claim 5, characterized in that: The anti-backflow smoke device comprises a cylindrical seat with an upper opening, two semicircular smoke exhaust holes arranged on the bottom plate of the cylindrical seat, a fixed axis and two semicircular air damper plates, and an annular flange is arranged on the semicircular smoke exhaust hole; The semicircular air door plate is hinged with the fixed shaft, the fixed shaft is opposite to the gap between the two semicircular smoke exhaust holes, the two ends are fixed with the cylindrical seat, and the semicircular air plate is matched with the annular flange.

7. The fan oblique horizontal smoke exhaust assembly according to claim 6, characterized in that: In the two semicircular damper plates, a middle hinge sleeve is provided at the middle of the diameter side of one semicircular damper plate, and two end hinge sleeves are provided on the diameter side of the other semicircular damper plate, and the middle hinge sleeve is inserted between the two end hinge sleeves.

8. The fan oblique horizontal smoke exhaust device according to claim 6, characterized in that: The upper end of the cylindrical seat is provided with two limit plates at both ends of a diameter line, and the limit plates are matched with the semicircular damper plates.

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