CN206709335U - A kind of airduct crossing pipes used in new exhaust ventilation system - Google Patents
A kind of airduct crossing pipes used in new exhaust ventilation system Download PDFInfo
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- CN206709335U CN206709335U CN201621260024.1U CN201621260024U CN206709335U CN 206709335 U CN206709335 U CN 206709335U CN 201621260024 U CN201621260024 U CN 201621260024U CN 206709335 U CN206709335 U CN 206709335U
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- expander
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- airduct
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Abstract
The utility model provides a kind of airduct crossing pipes used in new exhaust ventilation system, the crossing pipes can reduce the windage loss intersected in airduct to greatest extent, while also solve the problems, such as that the new exhaust ventilation system airduct of building intersects and take building vertical height space.
Description
Technical field
It the utility model is related to a kind of airduct crossing pipes, and in particular to a kind of airduct used in new exhaust ventilation system is handed over
Breeches pipe part, belong to civil engineering Heating, Ventilation and Air Conditioning (HVAC) Technology field.
Background technology
In building ventilation air exchange system, the problem of fresh air airduct and air draft airduct square crossing often occurs, generally
It is by fresh wind tube and exhaust duct lower arrangement in vertical direction, because airduct size is bigger, the intersection of airduct by the way of
Very big vertical height can be taken, the mode that increasing floor height is usually taken ensures the clear height of floor, thus causes every layer to need to increase
At least 200mm height, greatly improve the cost of civil engineering.
Especially in the civil buildings such as some work in high level, hotel, fresh air and air draft are reclaimed commonly using fresh air ventilator
Air draft energy, fresh air air main and air draft air main are arranged side by side in the furred ceiling of each layer corridor more, are characterized in new air draft airduct
Quantity is more, and air main and branch wind pipe crossover phenomenon are serious, and generally use branch wind pipe is U-shaped across the mode for avoiding air main, leads
Cause branch wind pipe local resistance increase, and warm ducts and pipes crisscross, takes that the ceiling void is big, and sectional area is larger for water power in the furred ceiling of corridor
Airduct as there is the situation that large area is intersected again, it is easy to ceiling height space needed for causing is big, furred ceiling interior conduit and equipment dimension
Repair insufficient space, the situation of stud deficiency.
Utility model content
Intersect local resistance increase and occupancy building vertical height space to solve to build new exhaust ventilation system airduct
The problem of, especially one kind is provided and is used in new air draft in the places such as the office using fresh air ventilator, hotel architecture, the utility model
The airduct crossing pipes of air exchange system, the crossing pipes can reduce the windage loss intersected in airduct to greatest extent, simultaneously
Also solve the problems, such as that the new exhaust ventilation system airduct of building intersects and take building vertical height space.
Need the technical problem specifically solved：First, branch wind pipe passes through air main, air main sectional area can be caused insufficient；Two
It is that stop of the branch wind pipe to air main air-flow can cause air main local resistance to increase.
Cardinal principle of the present utility model is that air main is passed through in section for the branch wind pipe horizontal direction of ellipse, is not take up erecting
To spatial altitude；Air main expander simultaneously, expansion tube department are the streamlined arc-plane of indent, are made suitable by the air-flow of air main
Freely, gas-flow resistance loss is reduced.
Airduct of the prior art uses square airduct or rectangle airduct, and in existing building ventilation technology not
There is the technical scheme that air main solution floor height is passed through using branch wind pipe, reason is that technical staff can not solve branch wind pipe and pass through
Influence of the resistance problem and branch wind pipe divulged information afterwards to air main to ventilation-sectional area in air main, so as to cause now in the art
There is no technical staff to can appreciate that using the mode of passing through and intersect the vertical height of occupancy building to solve new exhaust ventilation system airduct
The problem of spending space, actual conditions are also strictly without the technical scheme using mode of passing through.
The concave arc expansion tube department of this patent is compared with expansion tube department is straight plane or evagination arc-plane, the latter's flex point wedge angle
There are local eddy currents in place, pipeline air power streamline can be caused bad, when especially expansion tube department is evagination arc-plane, in air-flow
At the flex point of entrance, coefficient of partial resistance is bigger, and actual effect is simultaneously bad；Branch wind pipe in pipe fitting uses the ellipse of streamline moulding
Pipe, the gas that can be reduced in air main expander stream resistance, compared with commonly using square, circular duct, because square airduct has point
Sharp edge angle, square, circular duct has the bigger resistance that streams to the gas flowed through, and square, circular duct is to main wind
Pipe shielded area it is larger, it is necessary to expander size can also increase.It can effectively be reduced using oval airduct and stream resistance and to air-flow
Shielded area, reduce the size of expander.
Concrete technical scheme is as follows：
A kind of airduct crossing pipes used in new exhaust ventilation system, including air main expander 1, branch wind pipe 2, reducer pipe 4-
1 and 4-2, tuyere flange 5-1 and 5-2, tuyere flange 6-1 and 6-2, the both ends of air main expander 1 connect respectively tuyere flange 6-1,
6-2, tuyere flange 6-1,6-2 are used to connect outside air main, the both ends of branch wind pipe 2 difference connecting reducing pipe 4-1,4-2, reducer pipe
4-1,4-2 other end connect tuyere flange 5-1,5-2 respectively, and tuyere flange 5-1,5-2 are respectively used to connect outside branch wind
Pipe；Also include expansion tube department 3-1, expander joint portion 3-3 and expansion tube department 3-2；
The side of air main expander 1 is formed by connecting by expansion tube department 3-1, expander joint portion 3-3 and expansion tube department 3-2 successively, Zhi Feng
The middle part that pipe 2 passes perpendicularly through expander joint portion 3-3 intersects with air main expander 1 and passed from the another side of air main expander 1,
And expansion tube department 3-1, expansion tube department 3-2 be etc. size concave arc plane, and the radian of concave arc plane 30 °~
Between 45 °；
Meanwhile the section of the branch wind pipe 2 is oval, major axis and the channel airflow of air main expander 1 of its oval cross section
Direction is parallel, and its elliptical cross section area is identical with reducer pipe 4-1 or the reducer pipe 4-2 other ends outer air duct sectional area or omits
Greatly；
The ratio between the major axis of the oval cross section of branch wind pipe 2 and minor axis length are between 3：1~6：Between 1, and along its major axis
Beeline of its major axis two-end-point of direction respectively away from expander joint portion 3-3 both ends vertical cross-section is respectively 100mm；
And two end points of the oval cross section short axle arrive respectively the nearest upper and lower surface of air main expander 1 it is vertical away from
It is not less than 1 from the expander joint portion 3-3 to the another side of air main expander 1 vertical range length ratio:50；
Area caused by the air main expander 1 is passed through due to branch wind pipe 2 blocks, and is increased by way of arc expander and cut
Area, and the area increased is not less than the area being blocked.
Airduct crossing pipes of the present utility model can apply to ventilation system for buildings, and be particularly suitable for use in air main sectional area
More than the new exhaust ventilation system of the building of branch wind pipe sectional area.This airduct crossing pipes are used to connect fresh air air main and air draft branch
Airduct, or connection air draft air main and fresh air branch wind pipe.
It is laggard through fresh air ventilator and air draft progress heat exchange by the fresh air of outdoor introducing during new exhaust ventilation system operation
Enter fresh air air main, branch picks out fresh air branch wind pipe and fresh air is sent into each room, intersects in fresh air branch wind pipe and air draft air main
Place uses this pipe fitting, and air draft air main connects pipe fitting 6-2, is followed by 6-1 connection air draft air mains, and fresh air branch wind pipe connects the pipe
Part 5-2, it is followed by 5-1 feedings room；
Or the air draft in room is run in and enters air draft air main after wind branch wind pipe, through fresh air ventilator and new air heat-exchange
Discharge is outdoor afterwards, and air draft branch wind pipe and fresh air air main infall use this pipe fitting, fresh air air main connect pipe fitting 6-2, after
Connect 6-1 connection fresh air air mains, air draft branch wind pipe, which connects pipe fitting 5-2, is followed by 5-1 enters air draft air main.
It is preferred that the another side of the air main expander 1 of airduct crossing pipes also uses the arc-plane expander of indent, enter one
Step solves the problems, such as that air main expander 1 crosses wind area deficiency caused by branch wind pipe 2 blocks.
It is preferred that the branch wind pipe 2 pass through air main expander 1 after with the gap of the tube wall of air main expander 1 be provided with rubber it is U-shaped
Neck band, prevent from leaking out.Further, the U-shaped card slot bandwidth is 2cm.
It is preferred that the size adjustable of reducer pipe 4-1,4-2 two-port and/or the reconfigurable of two-port, suitable for difference
The airduct of the new exhaust ventilation system of shape.
It is preferred that the part of branch wind pipe 2 in air main expander 1 is made using aluminium, copper material, fresh air and air draft can be strengthened
Heat transfer effect, copper material, aluminium have thermal conductivity factor compared with conventional iron duct, glass fibre reinforced plastic blast pipe, composite airduct
High, corrosion resistant feature.
The beneficial effects of the utility model are：The horizontal direction of branch wind pipe 2 passes through air main expander 1, avoids airduct from vertically handing over
Fork ensure that floor height.Branch wind pipe 2 is also solved simultaneously through the sectional area of air main expander 1 deficiency caused by air main expander 1
Problem, and the technology that the local resistance of air main expander 1 caused by stop of the branch wind pipe 2 to the air-flow of air main expander 1 increases are asked
Topic, is widely used in ventilation system for buildings, and the air main sectional area that is particularly suitable for use in is more than the new air draft of building of branch wind pipe sectional area
Air exchange system.
Brief description of the drawings
The utility model is further illustrated with example below in conjunction with the accompanying drawings.
Fig. 1 is a kind of stereogram of airduct crossing pipes used in new exhaust ventilation system；
Fig. 2 is Fig. 1 top view；
Fig. 3 is the schematic diagram along line A-A in Fig. 2；
Fig. 4 is the schematic diagram along line B-B in Fig. 2；
Wherein, air main expander 1, branch wind pipe 2, expansion tube department 3-1 and 3-2, expander joint portion 3-3, reducer pipe 4-1 and 4-2,
Tuyere flange 5-1 and 5-2, tuyere flange 6-1 and 6-2.
Fig. 5 is a kind of airduct crossing pipes band size mark used in new exhaust ventilation system that embodiment 1 is labelled with size
The stereogram of note, wherein, a is the length in the external air main section of air main expander 1；B is that 1 external air main of air main expander is cut
The width in face；C is the length in the external branch wind pipe section of branch wind pipe 2；D is the width in the external branch wind pipe section of branch wind pipe 2；E is branch
The length of the oval cross section major axis of airduct 2；F is the length of the oval cross section short axle of branch wind pipe 2；G is the oval cross section short axle two of branch wind pipe 2
Length of the end points respectively away from the upper and lower plane beeline of air main expander 1；H is expander joint portion 3-3 relative plane along main wind
The side length of the airflow direction of pipe expander 1；I is length of the expander joint portion 3-3 along the airflow direction length of side of air main expander 1； j
Vertical range length for expander joint portion 3-3 to the another side of air main 1.
Embodiment
A kind of airduct crossing pipes used in new exhaust ventilation system of embodiment 1, the pipe fitting is according to practical implementation feelings
Condition design size, and verified by the application of specific heating and ventilation project, relevant parameter and efficacy data are as shown in table 1.
As Figure 1-5, a kind of airduct crossing pipes used in new exhaust ventilation system, its air main expander 1 it is external
Pipe, the section of the extension tube attached of branch wind pipe 2 are rectangle, and air main expander 1 is side expander, and enlarged tube portion is by expansion tube department 3-
1 and 3-2, expander joint portion 3-3 are formed, and another side is without expander.
Pipe fitting in the embodiment include air main expander 1, branch wind pipe 2, reducer pipe 4-1 and 4-2, tuyere flange 5-1 and
5-2, tuyere flange 6-1 and 6-2, the both ends of air main expander 1 connect tuyere flange 6-1,6-2, tuyere flange 6-1,6-2 respectively
For connecting outside air main, the both ends of branch wind pipe 2 difference connecting reducing pipe 4-1,4-2, reducer pipe 4-1,4-2 other end difference
Tuyere flange 5-1,5-2 are connected, tuyere flange 5-1,5-2 are respectively used to connect outside branch wind pipe；Also include expansion tube department 3-1, expand
Pipe joint portion 3-3 and expansion tube department 3-2, and the radian of concave arc plane is 30 °；
The side of air main expander 1 is formed by connecting by expansion tube department 3-1, expander joint portion 3-3 and expansion tube department 3-2 successively, Zhi Feng
The middle part that pipe 2 passes perpendicularly through expander joint portion 3-3 intersects with air main expander 1 and passed from the another side of air main expander 1,
And expansion tube department 3-1, expansion tube department 3-2 be etc. size concave arc plane；
Meanwhile the section of the branch wind pipe 2 is oval, major axis and the channel airflow of air main expander 1 of its oval cross section
Direction is parallel, and its elliptical cross section area is equal with reducer pipe 4-1 or the reducer pipe 4-2 other ends outer air duct sectional area or omits
Greatly；
The major axis of the oval cross section of branch wind pipe 2 and minor axis length are respectively 700mm and 120mm, and along its major axis side
Beeline to its major axis two-end-point respectively away from expander joint portion 3-3 both ends vertical cross-section is respectively 100mm；
And two end points of the oval cross section short axle arrive respectively the nearest upper and lower surface of air main expander 1 it is vertical away from
From for 40mm, the expander joint portion 3-3 to the vertical range length of the another side of air main expander 1 is 1580mm；
Area caused by the air main expander 1 is passed through due to branch wind pipe 2 blocks, and is increased by way of arc expander and cut
Area, and the area increased is not less than the area being blocked.
The device reality building heating and ventilation project project application, be installed in a 22 floor office building, divulge information airduct
It is 200mm that every layer, which takes ceiling height, and the method for using airduct infall to use U-shaped leap, actual every layer of occupancy furred ceiling are high
Spend for 420mm, therefore, can reduce the space that furred ceiling uses using this airduct pipe fitting, thus reduce building height 4.84m, effectively
Save Civil Cost.Installed in nominal air delivery it is 2000m by this part3Tested in/h ventilation air interchange system, the master of test
Airduct expander 1 and its built in oval branch pipe 2 according to the size design of the present embodiment, test result is shown, in air main wind
Measure as 2000m3/ h, branch wind pipe air quantity are 600m3During/h, the air quantity by air main expander 1 and oval branch pipe 2 is constant, with adopting
30% is reduced compared to total local resistance loss of air main and branch wind pipe with the airduct that intersects of U-shaped leap, fresh air is effectively reduced and changes
The power of mechanism of qi, energy loss is reduced, is more saved.
The tube design of the present embodiment effectively reduces the resistance of infall in pipeline, so as to reach equivalent technology effect
Under the conditions of can realize function using the fresh air ventilator of lower-wattage, the air main sectional area that is particularly suitable for use in is more than branch wind pipe
The new exhaust ventilation system of building of sectional area.
The parameter of 1 embodiment of table 1 and efficacy data.
Claims (6)
1. a kind of airduct crossing pipes used in new exhaust ventilation system, including air main expander (1), branch wind pipe (2), reducer pipe
(4-1,4-2), tuyere flange (5-1,5-2), tuyere flange (6-1,6-2), air main expander (1) both ends connect air port method respectively
Blue (6-1,6-2), tuyere flange (6-1,6-2) are used to connect outside air main, branch wind pipe (2) both ends difference connecting reducing pipe
(4-1,4-2), the other end of reducer pipe (4-1,4-2) connect tuyere flange (5-1,5-2), tuyere flange (5-1,5-2) respectively
It is respectively used to connect outside branch wind pipe；
Characterized by further comprising expansion tube department (3-1), expander joint portion (3-3) and expansion tube department (3-2)；
Air main expander (1) side is formed by connecting by expansion tube department (3-1), expander joint portion (3-3) and expansion tube department (3-2) successively,
The middle part that branch wind pipe (2) passes perpendicularly through expander joint portion (3-3) intersects with air main expander (1) and from air main expander (1)
Another side passes, and expansion tube department (3-1), expansion tube department (3-2) for etc. size concave arc plane, and concave arc plane
Radian between 30 °~45 °；
Meanwhile the section of the branch wind pipe (2) is oval, major axis and air main expander (1) channel airflow of its oval cross section
Direction is parallel, and its elliptical cross section area is identical with the outer air duct sectional area of reducer pipe (4-1) or reducer pipe (4-2) other end
It is or bigger；
The ratio between the major axis of branch wind pipe (2) oval cross section and minor axis length are between 3：1~6：Between 1, and along its major axis side
Beeline to its major axis two-end-point respectively away from expander joint portion (3-3) both ends vertical cross-section is respectively 100mm；
And two end points of the oval cross section short axle arrive the vertical range of the nearest upper and lower surface of air main expander (1) respectively
It is not less than 1 with the vertical range length ratio of the expander joint portion (3-3) to air main expander (1) another side:50；
Area caused by the air main expander (1) is passed through due to branch wind pipe (2) blocks, and is increased by way of arc expander and cut
Area, and the area increased is not less than the area being blocked.
A kind of 2. airduct crossing pipes used in new exhaust ventilation system according to claim 1, it is characterised in that main wind
The another side of pipe expander (1) uses the arc-plane expander of indent.
3. a kind of airduct crossing pipes used in new exhaust ventilation system according to claim 1 or 2, it is characterised in that become
The size adjustable of two-port and/or the reconfigurable of two-port of footpath pipe (4-1,4-2).
A kind of 4. airduct crossing pipes used in new exhaust ventilation system according to claim 3, it is characterised in that main wind
Branch wind pipe (2) in pipe expander (1) is made using aluminium, copper material.
5. a kind of airduct crossing pipes used in new exhaust ventilation system according to claim 4, it is characterised in that described
Branch wind pipe (2) is through air main expander (1) afterwards with being provided with rubber U-shaped card slot band at the gap of air main expander (1) tube wall.
A kind of 6. airduct crossing pipes used in new exhaust ventilation system according to claim 5, it is characterised in that the U
Type neck bandwidth is 2cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621260024.1U CN206709335U (en) | 2016-11-23 | 2016-11-23 | A kind of airduct crossing pipes used in new exhaust ventilation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621260024.1U CN206709335U (en) | 2016-11-23 | 2016-11-23 | A kind of airduct crossing pipes used in new exhaust ventilation system |
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| Publication Number | Publication Date |
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| CN206709335U true CN206709335U (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621260024.1U Active CN206709335U (en) | 2016-11-23 | 2016-11-23 | A kind of airduct crossing pipes used in new exhaust ventilation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382731A (en) * | 2016-11-23 | 2017-02-08 | 烟台大学 | Wind pipe crossed pipe fitting |
-
2016
- 2016-11-23 CN CN201621260024.1U patent/CN206709335U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382731A (en) * | 2016-11-23 | 2017-02-08 | 烟台大学 | Wind pipe crossed pipe fitting |
| CN106382731B (en) * | 2016-11-23 | 2022-03-15 | 烟台大学 | Crossed pipe fitting of air pipe |
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