CN201652698U - Uniform flow ventilating device - Google Patents
Uniform flow ventilating device Download PDFInfo
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- CN201652698U CN201652698U CN201020178180XU CN201020178180U CN201652698U CN 201652698 U CN201652698 U CN 201652698U CN 201020178180X U CN201020178180X U CN 201020178180XU CN 201020178180 U CN201020178180 U CN 201020178180U CN 201652698 U CN201652698 U CN 201652698U
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Abstract
The utility model discloses a uniform flow ventilating device with the characteristic of simple operation, which comprises a plurality of air inlets which are arrayed and arranged on a ventilating duct; the ventilating duct comprises an open end and a closed end, the air inlet which is mostly close to the closed end of the ventilating duct is of a first group, and other air inlets are of a second group; the windward sections of all the air inlets are parallel to the section of the ventilating duct; each air inlet of at least the second group is provided with a flow limit device, and the flow limit device is arranged on the other end corresponding to the end on which the windward section is positioned; on the position which is farthest away from the closed end of the ventilating duct, the opening of the flow limit device of the air inlets which are arrayed on the ventilating duct from far and near is increased or reduced in turn. Through adjusting the opening of the flow limit device, the flow rate and speed of the air flow can be adjusted, thus realizing the uniform ventilation or uniform exhaust, at the same time, the uniform flow ventilating device has simple operation, and can realize uniform ventilation through simply adjusting the flow limit device.
Description
Technical field
The utility model relates to a kind of flow-equalizing ventilation device.
Background technology
At present, Chinese patent 200710050238.5 discloses a kind of ventilating current equalizer, this device comprises that several are installed in the air port on the ventilation shaft, when described ventilation shaft is air supply duct, by adjusting each air port, the cross section that facings the wind that makes the air port is towards the openend of pipeline, and the projected area of cross section on the air supply duct cross section of facining the wind in the air port that is arranged in order according to openend strengthened successively, finally reaches the purpose of balanced ventilation; When described ventilation shaft is exhaust duct, by adjusting each air port, make the cross section openend of pipeline dorsad that facings the wind in air port, and the projected area of cross section on the air supply duct cross section of facining the wind in the air port that is arranged in order according to openend reduced successively, finally reach the purpose of even air draft.Above-mentioned ventilating current equalizer can reach the balanced ventilation and the even purpose of air draft in theory, but the actual mechanical process complexity, and all there is the situation about adjusting of being unfavorable in this adjustment structure.
Employing is regulated the air port by rotation mode, because the rotation of employing activity is regulated between air port and the supply and exhaust pipe, so connect relatively difficulty of sealing between air port and the supply and exhaust pipe, sealing effectiveness is undesirable, in its junction air leakage phenomena taking place, thereby influences even supply and exhaust.
Adopt flexible connected mode that the air port is regulated, be unfavorable for the accurate adjustment of air port adjusting device, and this device in use, be subjected to the pressure influence of supply and exhaust, cause the variation of air port size easily, thereby influence even supply and exhaust.
The utility model content
The technical problem that the utility model solves provides a kind of flow-equalizing ventilation device easy and simple to handle.
The technical scheme that its technical problem that solves the utility model adopts is: flow-equalizing ventilation device, comprise that several arrangements are installed in the air port on the ventilation shaft, described ventilation shaft comprises openend and blind end, an air port nearest with the ventilation shaft blind end is first group, other air port is second group, the cross section that facings the wind in all air ports is parallel with the ventilation shaft cross section, at least each air port of second group is provided with current-limiting apparatus, and described current-limiting apparatus is arranged on and the corresponding other end of place, cross section end that facings the wind; The open amount of arranging the current-limiting apparatus that is installed in the air port on the ventilation shaft apart from ventilation shaft blind end farthest from far near increases successively or reduces.
Further be: described ventilation shaft is an air supply duct, and the cross section that facings the wind in all air ports is towards the openend of pipeline, and each air port of second group is provided with current-limiting apparatus, and the open amount of the current-limiting apparatus in the air port that is arranged in order according to openend reduces successively.
Further be: the open amount of current-limiting apparatus that described first group air port is provided with all air ports of the open amount of current-limiting apparatus and its current-limiting apparatus and second group is in a ratio of minimum.
Further be: described ventilation shaft is an exhaust duct, the cross section openend of pipeline dorsad that facings the wind in all air ports, and each air port of second group is provided with current-limiting apparatus, and the open amount of the current-limiting apparatus in the air port that is arranged in order according to openend increases successively.
Further be: the open amount of current-limiting apparatus that described first group air port is provided with all air ports of the open amount of current-limiting apparatus and its current-limiting apparatus and second group is in a ratio of maximum.
Further be: described current-limiting apparatus is the blinds valve.
Further be: described current-limiting apparatus is a flow-limiting valve.
Further be: described air port is a T shape pipe, and described cross section down with the wind and current-limiting apparatus are separately positioned on the two ends of T shape pipe top straight pipe.
Further be: described current-limiting apparatus is provided with the open amount adjusting device, and the controller of above-mentioned adjusting device is installed in the outside of ventilation shaft.
Further be: seal by hermetically-sealed construction between the tube wall of described adjusting device and ventilation shaft.
The beneficial effects of the utility model are: adopt flow-equalizing ventilation device of the present utility model, the size of the open amount of the current-limiting apparatus by changing the air port can realize balanced ventilation or air draft, simple in structure, easy and simple to handle, can make each air port keep the coverage of even supply and exhaust to be extended, and, if flow-equalizing ventilation device of the present utility model is combined with existing even supply and exhaust mode, can make the coverage of even supply and exhaust obtain bigger extension.In addition, because the controller of adjusting device is installed in the outside of ventilation shaft, can make adjustment become very convenient to current-limiting apparatus, and, therefore can prevent effectively that the ventilation shaft internal gas flow is owing to leaking in the gap between the tube wall of adjusting device and ventilation shaft owing to seal by hermetically-sealed construction between the tube wall of adjusting device and ventilation shaft.
Description of drawings
Fig. 1 is the structural representation of the air supply duct of first kind of embodiment of the utility model;
Fig. 2 is the structural representation of the exhaust duct of second kind of embodiment of the utility model;
Fig. 3 is installed in the schematic diagram of the outside of air supply duct for the controller of the adjusting device of current-limiting apparatus;
Fig. 4 is installed in the schematic diagram of the outside of exhaust duct for the controller of the adjusting device of current-limiting apparatus.
Be labeled as among the figure: 1-ventilation shaft, 2-air port, 3-openend, 4-current-limiting apparatus, the 5-cross section that facings the wind, 6-controller, 7-adjusting device, 8-hermetically-sealed construction, 9-blind end, Pj-static pressure, Pd-dynamic pressure.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further specified.
Flow-equalizing ventilation device of the present utility model, comprise that several arrangements are installed in the air port 2 on the ventilation shaft 1, described ventilation shaft 1 comprises openend 3 and blind end 9, an air port 2 nearest with ventilation shaft 1 blind end 9 is first group, other air port 2 is second group, the cross section 5 that facings the wind in all air ports 2 is parallel with the ventilation shaft cross section, at least each air port 2 of second group is provided with current-limiting apparatus 4, described current-limiting apparatus 4 is arranged on and the corresponding other end of cross section 5 place ends that facings the wind, and the open amount of arranging the current-limiting apparatus 4 in the air port 2 that is installed on the ventilation shaft 1 apart from ventilation shaft 1 blind end 9 farthest from far near increases successively or reduces.The utility model can be realized balanced ventilation or air draft by the simple open amount of adjusting current-limiting apparatus, makes simple and easy to operate.Inner and the ventilation shaft connection with air port when above-mentioned current-limiting apparatus is opened.Above-mentioned current-limiting apparatus 4 can be the device that flow-limiting valve or blinds valve etc. are used to limit air-flow.In addition, can allow the air communication mistake after above-mentioned current-limiting apparatus 4 is opened, after closing, air-flow can't pass through current-limiting apparatus 4.Above-mentioned air port 2 can be rectangle three-way pipe or circular three-way pipe etc., and as shown in Figure 1, preferred implementation is that described air port 2 is a T shape pipe, and described T shape pipe is three-way pipe, and described cross section 5 down with the wind and current-limiting apparatus 4 are separately positioned on the two ends of T shape pipe top straight pipe.Above-mentioned T shape pipe is convenient to processing and is used, and current-limiting apparatus 4 is gone up when installing not only fast but also convenient to T shape pipe.
Embodiment one:
As shown in Figure 1, described ventilation shaft 1 is an air supply duct, arrange on the described air supply duct several air ports 2 are installed, described air port 2 is T shape pipe, the cross section 5 that facings the wind in described air port 2 is parallel with the air supply duct cross section and towards the openend 3 of pipeline, end over against the cross section 5 that facings the wind on all air ports 2 is provided with current-limiting apparatus 4, be the two ends that described cross section 5 down with the wind and current-limiting apparatus 4 are separately positioned on T shape pipe top straight pipe, above-mentioned current-limiting apparatus 4 can be blinds valve or flow-limiting valve, and the open amount of the current-limiting apparatus 4 in the air port 2 that is arranged in order according to openend 3 reduces successively.
In air supply duct, because flowing of inner air tube certainly existing the dynamic pressure Pd consistent with flow direction in the pipe, and the static pressure Pj of independent of direction, and the total head in the pipe is the static pressure Pj sum in dynamic pressure Pd in the pipe and the pipe.
On the one hand, air communication in the air supply duct is crossed the interior air port of air supply duct when extraneous ambient flow goes out, what rely on is the pressure that flowing pressure and external environment poor of inside, air port, because the pressure of external environment is definite value substantially, so, as realizing balanced ventilation, the flowing pressure that goes out of each inside, air port is reached unanimity, and go out the static pressure Pj that flowing pressure equals inside, air port, the flowing pressure static pressure Pj that will make each inside, air port that reaches unanimity that goes out of each inside, air port is reached unanimity.On the other hand, for air supply duct, because total head can reduce gradually along with the extension of pipeline in the pipe, keep the suitable air quantity that goes out to flow from the openend of air supply duct air port at a distance in order to make, initial pressure always is provided with bigger, be that the big and Main Ingredients and Appearance of the total head of air supply duct open end is dynamic pressure Pd, this just feasible static pressure Pj from the nearer air port of air supply duct openend is less than the static pressure Pj from air supply duct openend air port far away.Deficiency for the static pressure Pj that remedies each air port, the static pressure Pj of each inside, air port in the air supply duct is reached unanimity, the open amount of the current-limiting apparatus in the air port that the openend according to air supply duct is arranged in order is reduced successively, can make the part dynamic pressure Pd that enters in the air port be converted into static pressure Pj like this, thereby remedy the deficiency of this air port static pressure Pj, the static pressure Pj of each inside, air port in the air supply duct is reached unanimity, make to draw flowing pressure and also reach unanimity, finally reach the purpose of balanced ventilation.In addition, dynamic pressure Pd more nearby is bigger apart from the air supply duct openend, therefore, the current-limiting apparatus open amount at this place reduces a little and more dynamic pressure Pd can be converted to the deficiency that static pressure Pj remedies the static pressure Pj of this place, and it is less apart from air supply duct openend dynamic pressure Pd at a distance, therefore, the open amount of the current-limiting apparatus at this place need reduce enough dynamic pressure Pd to be converted to the deficiency that static pressure Pj remedies the static pressure Pj of this place by a relatively large margin.Adopt said structure, not only can balanced ventilation, and, because the open amount in the air port nearer apart from the openend of air supply duct is less, therefore can guarantee to have enough dynamic pressure Pd and these dynamic pressures Pd is converted into static pressure Pj, and then can make each air port keep the coverage of balanced ventilation to be extended apart from openend air port at a distance.
In addition, because the blind end of air supply duct itself just can be used as a current-limiting apparatus of closing fully, therefore on first group the air port in air supply duct current-limiting apparatus can be installed, can save resource like this, reduce cost, also can reach the purpose of balanced ventilation simultaneously.
Embodiment two:
As shown in Figure 2, described ventilation shaft 1 is an exhaust duct, arrange on the described exhaust duct several air ports 2 are installed, described air port 2 is T shape pipe, the cross section 5 and openend 3 dorsad pipeline parallel that facing the wind in described air port 2 with the exhaust duct cross section, end over against the cross section 5 that facings the wind on all air ports 2 is provided with current-limiting apparatus 4, be the two ends that described cross section 5 down with the wind and current-limiting apparatus 4 are separately positioned on T shape pipe top straight pipe, described current-limiting apparatus 4 can be blinds valve or flow-limiting valve, and the open amount of the current-limiting apparatus 4 in the air port 2 that is arranged in order according to openend 3 increases successively.
For exhaust duct, be that the negative pressure by each inside, air port makes outside air flow in the ventilation shaft from the air port, reach the purpose of air draft.On the one hand, because need guaranteeing from the openend air port at a distance of exhaust duct still can air draft, open end at exhaust duct must keep bigger negative pressure, this is just feasible near more from openend, this air port negative pressure is big more, promptly this air port is big more from the air quantity that external environment sucks accordingly, in order to realize the purpose of even air draft, the negative pressure of each inside, air port is reached unanimity.On the other hand, be example with one of them air port in the exhaust duct, when the current-limiting apparatus complete opening in this air port, the negative pressure maximum of this inside, air port, when the current-limiting apparatus in this air port was closed gradually, the negative pressure of this inside, air port reduced gradually, sucked air quantity accordingly and also reduced gradually.
Based on above-mentioned analysis, the open amount of the current-limiting apparatus in the air port that is arranged in order according to the openend of exhaust duct increases successively, the negative pressure that can adjust in each air port reaches unanimity, and then can realize the purpose of even air draft, simultaneously, since less from the open amount in the nearer air port of exhaust duct openend, can guarantee that therefore having enough negative pressure from exhaust duct openend air port at a distance carries out air draft, and then can make each air port keep the coverage of even air draft to be extended.
In addition, because the open amount of the current-limiting apparatus in first group air port is an open amount maximum in all current-limiting apparatus in the exhaust duct, therefore this air port can not be provided with current-limiting apparatus, be equivalent to the current-limiting apparatus complete opening on this air port, can economize on resources like this, reduce cost, also can reach the purpose of even air draft simultaneously.
Embodiment three:
On the basis of embodiment one or embodiment two, as shown in Figure 3 and Figure 4, described current-limiting apparatus 4 is provided with open amount adjusting device 7, the controller 6 of the adjusting device 7 of the open amount of described current-limiting apparatus 4 is installed in the outside of air supply duct or exhaust duct, can adjust the open amount of current-limiting apparatus 4 by controller 6, for example, electronic or the personal control of the adjusting device of flow-limiting valve is installed in the pipeline outside, and the electronic or personal control of adjusting device that maybe will control the open amount of blinds valve is installed in pipeline outside etc.Adopt said structure, can be convenient current-limiting apparatus is regulated.Certainly, the controller of above-mentioned adjusting device also can be installed in the inside of air supply duct or exhaust duct, is that this structure is compared with controller being installed in the ventilation shaft outside, and operation is convenient inadequately.
Embodiment four:
On the basis of embodiment three, as shown in Figure 3 and Figure 4, seal by hermetically-sealed construction 8 between the adjusting device 7 of described current-limiting apparatus 4 and the tube wall of air supply duct or exhaust duct.Described hermetically-sealed construction can be the sealing block made of conventional seals material or sealing ring etc.Owing to adopt hermetically-sealed construction, can guarantee effectively that the air-flow in air supply duct or the exhaust duct can not leak from the gap between adjusting device and the tube wall.Flow-equalizing ventilation device of the present utility model, owing to do not need the air port is regulated, only need the current-limiting apparatus on the air port is regulated, make the gap between the tube wall of air port and ventilation shaft can obtain sealing preferably, and it is firm that air port and ventilation shaft can be connected, in addition, air-flow is even when air-supply or air draft, and its effect that evenly goes out stream or evenly suction obviously is better than traditional even supply and exhaust device.
Claims (10)
1. flow-equalizing ventilation device, comprise that several arrangements are installed in the air port on the ventilation shaft (1), described ventilation shaft (1) comprises openend (3) and blind end (9), an air port nearest with ventilation shaft (1) blind end (9) is first group, other air port is second group, it is characterized in that: the cross section (5) that facings the wind in all air ports is parallel with the ventilation shaft cross section, at least each air port of second group is provided with current-limiting apparatus (4), and described current-limiting apparatus (4) is arranged on and the corresponding other end of cross section (5) place end that facings the wind; The open amount of arranging the current-limiting apparatus (4) that is installed in the air port on the ventilation shaft (1) apart from ventilation shaft (1) blind end (9) farthest from far near increases successively or reduces.
2. flow-equalizing ventilation device as claimed in claim 1, it is characterized in that: described ventilation shaft (1) is an air supply duct, the openend (3) of cross section (5) that facing the wind in all air ports towards pipeline, each air port of second group is provided with current-limiting apparatus (4), and the open amount of the current-limiting apparatus (4) in the air port that is arranged in order according to openend (3) reduces successively.
3. flow-equalizing ventilation device as claimed in claim 2 is characterized in that: the open amount of current-limiting apparatus that described first group air port is provided with all air ports of the open amount of current-limiting apparatus and its current-limiting apparatus and second group is in a ratio of minimum.
4. flow-equalizing ventilation device as claimed in claim 1, it is characterized in that: described ventilation shaft (1) is an exhaust duct, cross section (5) openend of pipeline (3) dorsad that facings the wind in all air ports, each air port of second group is provided with current-limiting apparatus (4), and the open amount of the current-limiting apparatus (4) in the air port that is arranged in order according to openend (3) increases successively.
5. flow-equalizing ventilation device as claimed in claim 4 is characterized in that: the open amount of current-limiting apparatus that described first group air port is provided with all air ports of the open amount of current-limiting apparatus and its current-limiting apparatus and second group is in a ratio of maximum.
6. as any described flow-equalizing ventilation device in the claim 1 to 5, it is characterized in that: described current-limiting apparatus (4) is the blinds valve.
7. as any described flow-equalizing ventilation device in the claim 1 to 5, it is characterized in that: described current-limiting apparatus (4) is a flow-limiting valve.
8. as any described flow-equalizing ventilation device in the claim 1 to 5, it is characterized in that: described air port is a T shape pipe, and described cross section (5) down with the wind and current-limiting apparatus (4) are separately positioned on the two ends of T shape pipe top straight pipe.
9. as any described flow-equalizing ventilation device in the claim 1 to 5, it is characterized in that: described current-limiting apparatus (4) is provided with open amount adjusting device (7), and the controller (6) of above-mentioned adjusting device (7) is installed in the outside of ventilation shaft (1).
10. flow-equalizing ventilation device as claimed in claim 9 is characterized in that: seal by hermetically-sealed construction (8) between the tube wall of described adjusting device (7) and ventilation shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020178180XU CN201652698U (en) | 2010-05-04 | 2010-05-04 | Uniform flow ventilating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020178180XU CN201652698U (en) | 2010-05-04 | 2010-05-04 | Uniform flow ventilating device |
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| Publication Number | Publication Date |
|---|---|
| CN201652698U true CN201652698U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020178180XU Expired - Lifetime CN201652698U (en) | 2010-05-04 | 2010-05-04 | Uniform flow ventilating device |
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| CN (1) | CN201652698U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818932A (en) * | 2010-05-04 | 2010-09-01 | 中铁二院工程集团有限责任公司 | Flow-equalizing ventilation device |
| PT107083A (en) * | 2013-07-29 | 2015-01-29 | Univ Do Algarve | MIXING DEVICE USING CONFLUENT JACDS |
| CN105345318A (en) * | 2015-11-17 | 2016-02-24 | 侯如升 | Gas flow restrictor of building reinforcement mesh welding machine |
| CN108006815A (en) * | 2017-11-14 | 2018-05-08 | 苏州庆瑞空气***有限公司 | Temperature automatically controlled air-conditioning internal machine |
| CN108006816A (en) * | 2017-11-14 | 2018-05-08 | 苏州庆瑞空气***有限公司 | The air-conditioning internal machine of compartment equalization temperature control |
-
2010
- 2010-05-04 CN CN201020178180XU patent/CN201652698U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818932A (en) * | 2010-05-04 | 2010-09-01 | 中铁二院工程集团有限责任公司 | Flow-equalizing ventilation device |
| CN101818932B (en) * | 2010-05-04 | 2012-08-22 | 中铁二院工程集团有限责任公司 | Flow-equalizing ventilation device |
| PT107083A (en) * | 2013-07-29 | 2015-01-29 | Univ Do Algarve | MIXING DEVICE USING CONFLUENT JACDS |
| CN105345318A (en) * | 2015-11-17 | 2016-02-24 | 侯如升 | Gas flow restrictor of building reinforcement mesh welding machine |
| CN108006815A (en) * | 2017-11-14 | 2018-05-08 | 苏州庆瑞空气***有限公司 | Temperature automatically controlled air-conditioning internal machine |
| CN108006816A (en) * | 2017-11-14 | 2018-05-08 | 苏州庆瑞空气***有限公司 | The air-conditioning internal machine of compartment equalization temperature control |
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Granted publication date: 20101124 |
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| CX01 | Expiry of patent term |