CN110966637B

CN110966637B - Wind pressure resistant smoke tube

Info

Publication number: CN110966637B
Application number: CN201811135722.2A
Authority: CN
Inventors: 涂磊; 杨开明; 秦刚; 沈文权; 朱海龙
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2021-10-01
Anticipated expiration: 2038-09-28
Also published as: CN110966637A

Abstract

The utility model provides a tobacco pipe is pressed to anti-wind, includes tobacco pipe body (1), its characterized in that tobacco pipe body (1) in the axial can be equipped with pivot (2) with rotating, the front end of this pivot (2) is equipped with fan (22), the rear end is equipped with first conical gear (21), correspondingly, smoke vent (11) have been seted up on tobacco pipe body (1) lateral wall, be close to aforementioned smoke vent (11) can be equipped with rotating and can arrange outdoor air discharge fan (5) with the flue gas in tobacco pipe body (1), this air discharge fan (5) and second conical gear (6) coaxial rotation, this second conical gear (6) and aforementioned first conical gear (21) meshing transmission. Compared with the prior art, the invention has the advantages that: the outside wind drives the fan to rotate, and then drives the wind wheel to rotate synchronously, the wind wheel supplies air for the flue gas and discharges the flue gas from the smoke discharge hole, and the larger the outside wind is, the larger the wind wheel air supply power is, thereby achieving the purpose of resisting wind pressure.

Description

Wind pressure resistant smoke tube

Technical Field

The invention relates to a smoke exhaust pipe, in particular to a smoke exhaust pipe applied to a gas water heater or a range hood.

Background

In the process of daily use of products such as a water heater or a range hood, once the products meet strong wind weather, the exhaust of smoke is greatly influenced, and the water heater can even be flamed out, so that the use and safety of a user are seriously influenced, and the following problems are specifically caused:

1. when the wind pressure is too big, the flue gas can not normally be discharged, influences the gas burning, reduce efficiency.

2. The wind flows back into the water heater, which can cause dangerous situations such as backfire, flameout, and CO exceeding standard.

In the aspect of preventing downdraft, many efforts and attempts have been made in the prior art, and see a Chinese utility model patent with patent number ZL200520062934.4, a double downdraft prevention smoke exhaust pipe (with the granted publication number CN 2856837Y); the upper and lower layers of the anti-downdraft pieces realize double anti-downdraft effects; see also chinese utility model patent No. ZL201220107068.6 "wind pressure resistant tobacco pipe of forced-ventilated gas water heater" (No. CN202547088U), this patent adopts smoke guide plate, deep bead, smoke guide plate is a cylindrical body with big end down, smoke guide plate lower extreme is equipped with smoke guide inlet, smoke guide plate upper end is equipped with smoke guide outlet, smoke guide plate is installed in the tobacco pipe and is close to smoke outlet, deep bead is the annular plate that is equipped with the exhaust hole, the projection of exhaust hole in deep bead central line direction is located the periphery of smoke guide outlet of smoke guide plate, the deep bead is installed in smoke outlet of tobacco pipe, the region of tobacco pipe between smoke guide plate and deep bead is equipped with the structure of exhaust hole, can in time discharge after having irritated backward wind entering tobacco pipe, do not cause the influence to normally discharging fume, so it can guarantee the normal work of forced-ventilated gas water heater host computer effectively when low load burning condition and outdoor wind is great.

Disclosure of Invention

The present invention provides a wind-resistant smoke tube in order to solve the above technical problems.

The invention aims to solve another technical problem of providing an anti-wind pressure smoke pipe which uses external wind power to assist in smoke discharge.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a tobacco pipe is pressed to anti-wind, includes the tobacco pipe body, its characterized in that this internal axial of tobacco pipe can be equipped with the pivot with rotating, the front end of this pivot is equipped with the fan, and the rear end is equipped with first bevel gear, correspondingly, smoke vent has been seted up on the tobacco pipe body lateral wall, be close to aforementioned smoke vent can be equipped with rotating and can arrange outdoor air discharge fan with this internal flue gas of tobacco pipe, this air discharge fan and the coaxial rotation of a second bevel gear, this second bevel gear and aforementioned first bevel gear meshing transmission.

The smoke tube body is internally provided with a baffle, and the rotating shaft can be rotatably arranged on the baffle. The baffle can prevent wind from axially entering the smoke pipe, is also used for installing the rotating shaft, and can be used for two purposes.

Furthermore, a bracket is arranged on one side of the baffle plate, and the exhaust fan can be rotatably arranged on the bracket.

Preferably, the support comprises a cylinder and a cone, the outer end of the cone forms an airflow guiding surface, the cone is connected to the rear end of the cylinder, the exhaust fan can be rotatably arranged on the cylinder, and correspondingly, the second bevel gear is positioned in the cylinder. The cone can play the effect of giving the flue gas water conservancy diversion, compares traditional tobacco pipe flue gas stream more smoothly.

Further, the exhaust fans are arranged up and down, correspondingly, the second bevel gears corresponding to the two exhaust fans are respectively in meshing transmission with the first bevel gears, and correspondingly, the smoke exhaust holes are multiple and are annularly opened on the side wall of the smoke pipe body.

The front end of the smoke tube body is provided with a flow guide sleeve which can introduce wind to drive the fan to rotate. The wind in different external wind directions can be guided to one direction for the fan to drive the wind wheel.

Furthermore, the flow guide sleeve is provided with an axial air inducing port capable of introducing front air and a lateral air inducing port capable of introducing lateral air, and the lateral air inducing port is positioned on the periphery of the axial air inducing port and is obliquely arranged.

Preferably, the flow guide sleeve comprises a sleeve part and an outer cover part covering the periphery of the sleeve part, the sleeve part is axially hollow to form an air inlet cavity, and the rear end of the sleeve part is assembled and connected with the smoke pipe body; the outer cover part sequentially comprises an annular part, a connecting part and a horn-shaped flared part from front to back, the annular part forms an axial air induction port in butt joint with the air inlet cavity, the inner wall of the flared part and the outer wall of the sleeve part form the lateral air induction port, and the lateral air induction port enters the air inlet cavity from back to front through a gap between the annular part and the front end of the sleeve part. The lateral air inlet and the axial air inlet independently supply air, are not influenced mutually, and are favorable for driving the fan together.

Further, the outer end face of the annular portion is formed with a smooth air guide surface around the axial air guide opening.

In view of reducing wind resistance, the inner ring of the axial air inducing port extends inwards to form an air inducing section, and the air inducing section extends into the air inlet cavity.

In consideration of reducing wind resistance and effectively utilizing wind pressure, the front end of the sleeve part is radially and forwardly bent inwards to form a wind guide ring for guiding side wind from the side wind guide opening to the wind inlet cavity.

The front end of the wind guide ring is bent inwards and backwards to form a wind guide ring, a lateral wind inlet cut-off port is formed between the outer wall of the wind guide ring and the back surface of the wind guide section, the wind inlet end of the cut-off port is communicated with a lateral wind induction port, and the wind outlet end of the cut-off port is communicated with the wind inlet cavity. The wind-guiding circle can further guarantee the smoothness of side direction air inlet, and the cut-off opening can promote the wind speed.

Furthermore, an auxiliary air induction port is formed in the connecting portion, and air entering through the lateral air induction port and air entering through the auxiliary air induction port are converged and then enter the air inlet cavity through the air guide ring. In order to reduce the wind resistance, a guide plate which is obliquely arranged is arranged between the auxiliary induced draft opening and the lateral induced draft opening.

Furthermore, a plurality of connecting ribs are arranged between the inner wall of the connecting part and the outer wall of the sleeve part.

Compared with the prior art, the invention has the advantages that: the outside wind drives the fan to rotate, and then drives the wind wheel to rotate synchronously, the wind wheel supplies air for the flue gas and discharges the flue gas from the smoke discharge hole, and the larger the outside wind is, the larger the wind wheel air supply power is, thereby achieving the purpose of resisting wind pressure.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment.

Fig. 2 is an exploded view of the embodiment.

Fig. 3 is a schematic view of the flow guide sleeve in fig. 2 from another perspective.

Fig. 4 is a perspective sectional view of the flow guide sleeve.

FIG. 5 is a diagram illustrating a usage state of the embodiment.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1, fig. 2 and fig. 5, the wind-pressure-resistant smoke tube in the present embodiment includes a smoke tube body 1 and a flow guiding sleeve 3 disposed at the front end of the smoke tube body 1, wherein a rotating shaft 2 is axially and rotatably disposed in the smoke tube body 1, specifically, a baffle 12 is disposed in the smoke tube body 1, and the rotating shaft 2 is rotatably disposed on the baffle 12. The front end of the rotating shaft 2 is provided with a fan 22, the rear end is provided with a first bevel gear 21, correspondingly, the side wall of the smoke tube body 1 is provided with a smoke exhaust hole 11, an exhaust fan 5 which can exhaust smoke in the smoke tube body 1 to the outside is rotatably arranged near the smoke exhaust hole 11, the exhaust fan 5 and the second bevel gear 6 rotate coaxially, and the second bevel gear 6 and the first bevel gear 21 are in meshing transmission.

One side of the baffle 12 is provided with a bracket 4, the bracket 4 comprises a cylinder 42 and a cone 41 of which the outer end forms an airflow guide surface, the cone 41 has a guide and guide effect on the flue gas and accelerates the discharge of the flue gas, the cone 41 is connected with the rear end of the cylinder 42, the exhaust fan 5 is rotatably arranged on the cylinder 42, and the second bevel gear 6 is positioned in the cylinder 42.

The exhaust fans 5 in this embodiment are arranged up and down, correspondingly, the second bevel gears 6 corresponding to the two exhaust fans 5 are respectively in meshing transmission with the first bevel gears 21, correspondingly, the exhaust holes 11 are multiple and annularly opened on the side wall of the smoke tube body 1.

As shown in fig. 3, 4 and 5, the baffle sleeve 3 in this embodiment has an axial air-inducing opening 36 capable of inducing front air and a lateral air-inducing opening 33 capable of inducing side air, and the lateral air-inducing opening 33 is located at the periphery of the axial air-inducing opening and is arranged obliquely.

Specifically, the deflector sleeve 3 comprises a sleeve portion 31 and an outer cover portion 32 covering the outer periphery of the sleeve portion 31, the sleeve portion 31 is axially hollow to form an air inlet cavity 313, and the rear end of the air inlet cavity is assembled and connected with the smoke tube body 1; the outer cover portion 32 sequentially comprises an annular portion 321, a connecting portion 322 and a flared portion 323 from front to back, the annular portion 321 forms an axial air inlet 36 butted with the air inlet cavity 313, the inner wall of the flared portion 323 and the outer wall of the sleeve portion 31 form a lateral air inlet 33, and the lateral air inlet 33 enters the air inlet cavity 313 from back to front through a gap between the annular portion 321 and the front end of the sleeve portion 31.

The outer end face of the annular portion 321 is formed with a smooth air guiding surface 324 around the axial air introducing port 36. An air guide section 37 extends inwards from the inner ring of the axial air inducing opening 36, and the air guide section 37 extends into the air inlet cavity 313.

The front end of the sleeve part 31 is bent inwards in the radial direction to form a wind guide ring 311 which guides the side wind from the side wind guide opening 33 to the wind inlet cavity 313. The front end of the wind guide ring 311 is bent inwards and backwards to form a wind guide ring 312, a lateral wind inlet cut-off port 39 is formed between the outer wall of the wind guide ring 312 and the back surface of the wind guide section 37, the wind inlet end of the cut-off port 39 is communicated with the lateral wind inlet 33, and the wind outlet end is communicated with the wind inlet cavity 313. The section of the cutoff port 39 is reduced, and the function of accelerating the lateral air inlet can be achieved.

The connecting part 322 is provided with an auxiliary air inducing opening 34, and the air entering through the lateral air inducing opening 33 and the air entering through the auxiliary air inducing opening 34 are converged and then enter the air inlet cavity 313 through the air guiding ring 311. And a flow guide plate 35 which is obliquely arranged is arranged between the auxiliary air inducing opening 34 and the lateral air inducing opening 33. A plurality of connecting ribs 38 are provided between the inner wall of the connecting portion 322 and the outer wall of the sleeve portion 31.

Referring to fig. 5, in windy weather, if the wind is front wind, the wind enters the air intake cavity 313 through the axial air inlet 36, and if the wind is side wind, the wind enters the air intake cavity 313 through the auxiliary air inlet 34 and the lateral air induction opening 33, and after converging, the wind enters the air intake cavity 313 through the cut-off opening 39, so that no matter how the external wind direction is, the wind can be guided to blow to the fan 21 from the front by the action of the flow guide sleeve 3, the fan 21 rotates to drive the first bevel gear 21 to rotate, and the first bevel gear 21 drives the two second bevel gears 6 and the exhaust fan 5 to work to blow to the exhaust hole 11. The blowing capacity is enhanced along with the enhancement of the external wind power. The cone 41 has a flow guiding effect on the discharged flue gas, and the flue gas flows out more smoothly.

If the wind is in the non-working state, the wind can prevent external wind from entering, so that the aim of preventing the wind from falling is fulfilled; if the exhaust fan is in a working state, a negative pressure area can be formed on the back of the rotating exhaust fan, so that a suction force is generated to suck the flue gas, and meanwhile, the air blown out by the exhaust fan can generate an injection effect, so that the exhaust of the flue gas is further assisted, and the purpose of resisting wind pressure is achieved. In addition, the outer surface of the cone can play a role in guiding the flue gas, and the flue gas flows out more smoothly compared with the traditional smoke pipe.

The flow guide sleeve 3 can guide the outside wind with different wind directions to one direction, and converts the wind power into the wind discharged towards the smoke discharge hole through the mechanism so as to achieve the purposes of wind pressure resistance and anti-downdraft.

Claims

1. A wind pressure resistant smoke tube comprises a smoke tube body (1) and is characterized in that a rotating shaft (2) is axially and rotatably arranged in the smoke tube body (1), a fan (22) is arranged at the front end of the rotating shaft (2), a first bevel gear (21) is arranged at the rear end of the rotating shaft, a smoke exhaust hole (11) is correspondingly formed in the side wall of the smoke tube body (1), an exhaust fan (5) capable of discharging smoke in the smoke tube body (1) to the outside is rotatably arranged close to the smoke exhaust hole (11), the exhaust fan (5) and a second bevel gear (6) rotate coaxially, and the second bevel gear (6) is in meshing transmission with the first bevel gear (21);

the front end of the smoke tube body (1) is provided with a flow guide sleeve (3) which can introduce wind to drive the fan (22) to rotate;

the flow guide sleeve (3) is provided with an axial air inducing port (36) capable of introducing front air and a lateral air inducing port (33) capable of introducing lateral air, and the lateral air inducing port (33) is positioned on the periphery of the axial air inducing port and is obliquely arranged;

the flow guide sleeve (3) comprises a sleeve part (31) and an outer cover part (32) covering the periphery of the sleeve part (31), the sleeve part (31) is axially hollow to form an air inlet cavity (313), and the rear end of the air inlet cavity is assembled and connected with the smoke pipe body (1); the outer cover part (32) sequentially comprises an annular part (321), a connecting part (322) and a flared flaring part (323) from front to back, the annular part (321) forms an axial air induction port (36) butted with the air inlet cavity (313), the inner wall of the flaring part (323) and the outer wall of the sleeve part (31) form a lateral air induction port (33), and the lateral air induction port (33) enters the air inlet cavity (313) from back to front through a gap between the annular part (321) and the front end of the sleeve part (31).

2. The wind-resistant fire tube according to claim 1, wherein a baffle (12) is arranged in the fire tube body (1), and the rotating shaft (2) is rotatably arranged on the baffle (12).

3. The wind-resistant cigarette tube of claim 2, characterized in that a bracket (4) is provided on one side of the baffle (12), and the exhaust fan (5) is rotatably provided on the bracket (4).

4. The wind-resistant smoke tube according to claim 3, wherein the support (4) comprises a tube (42) and a cone (41) with an outer end forming an airflow guiding surface, the cone (41) is connected to the rear end of the tube (42), the exhaust fan (5) is rotatably disposed on the tube (42), and correspondingly, the second bevel gear (6) is disposed in the tube (42).

5. The wind-resistant smoke tube according to claim 3, wherein the exhaust fans (5) are arranged up and down, correspondingly, the second bevel gears (6) corresponding to the two exhaust fans (5) are respectively in meshing transmission with the first bevel gear (21), correspondingly, the smoke discharge holes (11) are multiple and are annularly opened on the side wall of the smoke tube body (1).

6. The wind-resistant cigarette tube of claim 1, characterized in that the outer end face of the annular portion (321) is formed with a smooth wind-guiding surface (324) around the axial wind-guiding opening (36).

7. The wind-resistant cigarette tube of claim 6, characterized in that the inner ring of the axial air-inducing opening (36) is extended inward with an air-inducing section (37), and the air-inducing section (37) is extended into the air-intake chamber (313).

8. The wind-resistant fire-tube according to claim 7, characterized in that the front end of the sleeve portion (31) is bent inward in the radial direction to form a wind guide ring (311) for guiding the side wind from the side wind guide opening (33) to the wind inlet cavity (313).

9. The wind-resistant fire-resistant tube according to claim 8, wherein the front end of the wind guide ring (311) is bent inwards and backwards to form a wind guide ring (312), a lateral wind inlet cut-off opening (39) is formed between the outer wall of the wind guide ring (312) and the back surface of the wind guide section (37), the wind inlet end of the cut-off opening (39) is communicated with the lateral wind inlet (33), and the wind outlet end is communicated with the wind inlet cavity (313).

10. The wind-resistant fire-tube according to claim 8, characterized in that the connecting portion (322) is provided with an auxiliary air-inducing opening (34), and the air entering through the lateral air-inducing opening (33) and the air entering through the auxiliary air-inducing opening (34) are merged and then enter the air inlet cavity (313) through the air-guiding ring (311).

11. The wind-resistant cigarette tube of claim 10, characterized in that a deflector (35) is obliquely arranged between the auxiliary air-inducing opening (34) and the lateral air-inducing opening (33).

12. The wind-resistant cigarette tube of claim 10, wherein a plurality of connecting ribs (38) are provided between the inner wall of the connecting portion (322) and the outer wall of the sleeve portion (31).