CN113606630A

CN113606630A - Public flue for improving smoke discharge performance

Info

Publication number: CN113606630A
Application number: CN202110963406.XA
Authority: CN
Inventors: 高增梁; 吴政晖; 周水清
Original assignee: Shengzhou Zhejiang University of Technology Innovation Research Institute
Current assignee: Shengzhou Zhejiang University of Technology Innovation Research Institute
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2021-11-05

Abstract

The invention discloses a public flue for improving smoke exhaust performance, which comprises a smoke exhaust main pipe and a smoke exhaust branch pipe, wherein a spiral flow channel is arranged on the inner wall of the smoke exhaust main pipe at an air inlet along the smoke exhaust direction; one end of the smoke exhaust branch pipe is connected with the range hood through a plastic hose, and the other end of the smoke exhaust branch pipe is connected with the smoke exhaust main pipe; the smoke exhaust branch pipe comprises a branch pipe inlet pipe and a branch pipe outlet pipe communicated with the branch pipe inlet pipe; the branch pipe inlet pipe is perpendicular to the smoke exhaust main pipe; the smoke exhaust branch pipe comprises a locking ring, and the smoke exhaust branch pipe is fixed on the smoke exhaust main pipe through the locking ring; the outlet pipe of the branch pipe is tangent to the inner wall of the main smoke exhaust pipe, so that the oil smoke exhausted by the range hood tangentially flows into the main smoke exhaust pipe through the branch smoke exhaust pipe. The invention has the beneficial effects that: the invention can make the oil smoke enter the public flue in a tangential inflow mode through the smoke exhaust branch pipe of the auxiliary device, thereby reducing the energy loss of the oil smoke in the public flue and leading the oil smoke to the outdoor more smoothly.

Description

Public flue for improving smoke discharge performance

Technical Field

The invention relates to the field of residential smoke exhaust, in particular to a public flue for improving smoke exhaust performance.

Background

In living homes, the main food for each household originates from the kitchen, which is the place where indoor air pollution is the most severe. If people stay in the kitchen oil smoke pollutants for a long time, various body diseases can be induced, and if the kitchen oil smoke is not controlled and discharged in time, the health and safety of the people and the family are seriously influenced. Nowadays, the scientific and technical progress and development make people pay more attention to health gradually, and people have gradually realized that good air quality in the ambient air during working is closely related to prolonging the service life of people and improving the working efficiency. Most people buy the range hoods and place the range hoods above a cooking bench, and oil smoke pollutants are discharged outdoors through the oil smoke suction function of the range hoods. At present, a kitchen exhaust flue system of a high-rise building is connected with a range hood of each floor resident through a common flue, oil smoke pollutants generated when each floor resident cooks are gathered in the common flue, and finally the oil smoke pollutants are discharged to outdoor high altitude through an air outlet at the top layer of the building. Along with the upgrading of product technology, the smoke discharge amount of the range hood is greatly improved, the smoke discharge amount is promoted to more than 1200 m/h from about 400 m/h before years, and the smoke discharge pipeline is not correspondingly improved to match the large-suction range hood on the current market. Therefore, a public flue capable of improving the smoke exhaust performance is provided to solve the problems.

Disclosure of Invention

The invention aims to provide a public flue capable of improving smoke exhaust performance, and solves the problem that the traditional public flue cannot meet the smoke exhaust requirements of residents on each floor.

In order to achieve the above purpose, the invention provides the following technical scheme:

a public flue for improving the smoke exhaust performance comprises a smoke exhaust main pipe and a smoke exhaust branch pipe, wherein one end of the smoke exhaust branch pipe is connected with a range hood through a plastic hose, and the other end of the smoke exhaust branch pipe is connected with the smoke exhaust main pipe; the branch pipe that discharges fume includes the branch pipe inlet tube and the branch pipe outlet pipe that is linked together with the branch pipe inlet tube, the branch pipe inlet tube hangs down mutually with the main pipe that discharges fume and puts, the branch pipe outlet pipe is tangent with the main pipe inner wall that discharges fume to make the exhaust oil smoke of lampblack absorber flow in the main pipe that discharges fume through the branch pipe tangential that discharges fume.

The public flue for improving the smoke exhaust performance is characterized in that the smoke exhaust main pipe is provided with an air inlet, a branch pipe inlet pipe of the smoke exhaust branch pipe is arranged at the air inlet of the smoke exhaust main pipe, and the inner wall of the smoke exhaust main pipe is provided with 2-5 circles of spiral flow channels at the air inlet along the smoke exhaust direction.

The public flue for improving the smoke exhaust performance is characterized in that the bottom end of the smoke exhaust main pipe is a closed surface, the top end of the smoke exhaust main pipe is provided with an air outlet, and oil smoke is finally exhausted outdoors through the air outlet of the smoke exhaust main pipe.

The utility flue for improving the smoke exhaust performance is characterized in that the smoke exhaust main pipe is cylindrical.

The utility model provides a public flue for improving performance of discharging fume, its characterized in that, plastic hose one end is equipped with the import check valve to link to each other with the branch pipe of discharging fume through the import check valve, the plastic hose other end is equipped with fan export check valve to link to each other with the lampblack absorber through fan export check valve.

The utility model provides a public flue for improving performance of discharging fume which characterized in that, the branch pipe of discharging fume still includes the locking ring, be equipped with the external screw thread on the branch pipe inlet tube, be equipped with the internal thread on the locking ring, the branch pipe of discharging fume is fixed on the main pipe of discharging fume through the locking ring.

The invention has the beneficial effects that:

1) the invention can make the oil smoke enter the public flue in a tangential inflow mode through the smoke exhaust branch pipe of the auxiliary device, thereby reducing the energy loss of the oil smoke in the public flue and leading the oil smoke to the outdoor more smoothly.

2) The invention makes the oil smoke rise spirally in the public flue by carrying out local spiral design on the inner wall of the public flue, reduces the flow resistance of the oil smoke and the pressure value in the public flue, and improves the smoke exhaust efficiency of residents on each floor.

3) The smoke exhaust branch pipe and the spiral main pipe are matched, so that the smoke exhaust performance of the flue is improved to the maximum extent, the smoke exhaust branch pipe is smaller than the traditional square public flue, and the kitchen space utilization rate of residents is improved.

Drawings

FIG. 1 is a schematic three-dimensional structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of the connection structure of the branch pipes and the main pipes for smoke evacuation;

FIG. 4 is a schematic three-dimensional structure of a smoke evacuation branch pipe according to the present invention;

FIG. 5 is a schematic view of the installation structure of the branch pipes for smoke evacuation of the present invention;

FIG. 6 is a finite element simulation of an embodiment of the present invention;

FIG. 7 is a finite element simulation of a comparative example of the present invention;

in the figure: 1. a main smoke exhaust pipe; 101. a spiral flow channel; 102. an air inlet; 2. a smoke exhaust branch pipe; 201. a branch pipe inlet pipe; 202. a branch pipe outlet pipe; 3. an inlet check valve; 4. a plastic hose; 5. a fan outlet check valve; 6. a range hood; 601. a fan.

Detailed Description

The technical solution in the implementation of the present invention will be described in detail and clearly with reference to the accompanying drawings in the embodiments of the present invention.

Example (b):

as shown in fig. 1-7, a common flue for improving smoke discharging performance is composed of a main smoke discharging pipe 1 and a branch smoke discharging pipe 2, wherein the main smoke discharging pipe 1 is made of cement material, and the branch smoke discharging pipe 2 is made of plastic material; the invention improves the smoke exhaust performance of the public flue by improving the shapes of the main smoke exhaust pipe 1 and the branch smoke exhaust pipes 2 and the internal structural layout of the main smoke exhaust pipe 1.

The bottom end of the main smoke exhaust pipe 1 is a closed surface, the top end is an air outlet, and the oil smoke is finally discharged to the outside through the main smoke exhaust pipe 2.

One end of the smoke exhaust branch pipe 2 is connected with the range hood through a fan outlet check valve 5, the other end of the smoke exhaust branch pipe 2 is connected with the smoke exhaust main pipe 1 through an inlet check valve 3, and the oil smoke is introduced into the smoke exhaust main pipe 1 through the smoke exhaust branch pipe 2.

The shape of the improved smoke exhaust main pipe 1 is that the shape of the cross section of the smoke exhaust main pipe 1 is changed from the traditional rectangle into the circle under the condition that the cross section area is not changed, and the energy loss of fluid in the rectangular straight pipe and the circular straight pipe with the same cross section area is calculated, so that the energy loss is larger, namely the resistance borne by oil smoke during flowing is larger, the energy loss can be reduced by changing the smoke exhaust main pipe 1 into the cylindrical shape, the smoke exhaust efficiency is improved, the outer circle diameter of the smoke exhaust main pipe is 360mm, and the inner circle diameter is 340 mm.

The shape of the improved smoke exhaust branch pipe 2 means that one end of the air outlet of the smoke exhaust branch pipe 2 is designed to be tangent to the inner wall of the smoke exhaust main pipe 1, so that the oil smoke tangentially flows into the smoke exhaust main pipe 1 through the smoke exhaust branch pipe 2. Because in traditional public flue, the oil smoke leads to when being responsible for 1 through exhaust branch pipe 2, can be responsible for 2 inside whirls that produce in exhaust, thereby lead to the pipe network operation energy consumption to strengthen, seriously influence public flue's efficiency of discharging fume, so will adopt the mode of tangential inflow to let the oil smoke get into and discharge fume and be responsible for 1, make it have a spiral ascending process in main 1 in the exhaust fume, thereby reduce the flow resistance of oil smoke and the pressure value in main 1 in the exhaust fume, improve each floor resident family's efficiency of discharging fume, the inner circle diameter of exhaust branch pipe air inlet one end is 90mm, the inner circle radian of gas outlet one end is 78 degrees.

The internal structural layout of the improved smoke exhaust main pipe 1 means that in order to enable the oil smoke in the smoke exhaust main pipe 1 to have more obvious spirally-rising flow characteristics, the inner wall of the smoke exhaust main pipe 1 is spirally designed, which is equivalent to providing a smoother path for the emission of the oil smoke, so that the smoke exhaust efficiency of a public flue is further improved, 3 circles of spiral flow channels are designed at the air inlet of the smoke exhaust main pipe, and the thread pitch is 300 mm.

Comparative example:

as shown in fig. 7, which is a graph of the rate of smoke exhaust when the main smoke exhaust pipe 1 and the branch smoke exhaust pipe 2 are vertically arranged, compared with the rate of smoke exhaust of the present invention shown in fig. 6, it can be clearly seen that the main smoke exhaust pipe 1 and the branch smoke exhaust pipe 2 of the present invention have structural characteristics, so that the rate of smoke exhaust of the present invention is greatly increased compared with the conventional method.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.

Claims

1. A public flue for improving the smoke exhaust performance is characterized by comprising a main smoke exhaust pipe (1) and a branch smoke exhaust pipe (2), wherein one end of the branch smoke exhaust pipe (2) is connected with a range hood (6) through a plastic hose (4), and the other end of the branch smoke exhaust pipe is connected with the main smoke exhaust pipe (1); branch pipe (2) of discharging fume include branch pipe inlet tube (201) and branch pipe outlet pipe (202) that are linked together with branch pipe inlet tube (201), branch pipe inlet tube (201) are responsible for (1) with discharging fume and are put mutually perpendicularly, branch pipe outlet pipe (202) are responsible for (1) inner wall with discharging fume tangent to make lampblack absorber (6) exhaust oil smoke be responsible for in (1) through branch pipe (2) tangential inflow of discharging fume.

2. A public flue for improving smoke evacuation performance according to claim 1, wherein the main smoke evacuation pipe (1) is provided with an air inlet (102), the branch pipe inlet pipe (201) of the branch smoke evacuation pipe (2) is arranged at the air inlet (102) of the main smoke evacuation pipe (1), and 2-5 circles of spiral flow channels (101) are arranged on the inner wall of the main smoke evacuation pipe (1) at the air inlet (102) along the smoke evacuation direction.

3. The utility flue for improving the smoke discharging performance of claim 1, wherein the bottom end of the main smoke discharging pipe (1) is a closed surface, the top end is an air outlet, and the smoke is finally discharged to the outside through the air outlet of the main smoke discharging pipe (1).

4. A utility flue for improving the performance of flue gas extraction according to claim 1, characterized in that the main flue pipe (1) is cylindrical in shape.

5. The utility flue for improving the smoke exhaust performance as claimed in claim 1, wherein one end of the plastic hose (4) is provided with an inlet check valve and is connected with the smoke exhaust branch pipe (2) through the inlet check valve, and the other end of the plastic hose (4) is provided with a fan outlet check valve (5) and is connected with the range hood (6) through the fan outlet check valve (5).

6. A utility flue for improving the performance of smoke evacuation according to claim 1, wherein said branch exhaust pipes (2) further comprise locking rings (204), said branch inlet pipe (201) is provided with external threads, said locking rings (204) are provided with internal threads, and said branch exhaust pipes (2) are fixed to the main exhaust pipe (1) by the locking rings (204).