CN209294132U - A kind of smoke exhaust fan air quantity multiplication cooling device - Google Patents
A kind of smoke exhaust fan air quantity multiplication cooling device Download PDFInfo
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- CN209294132U CN209294132U CN201821808682.9U CN201821808682U CN209294132U CN 209294132 U CN209294132 U CN 209294132U CN 201821808682 U CN201821808682 U CN 201821808682U CN 209294132 U CN209294132 U CN 209294132U
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- venturi
- smoke exhaust
- reducing pipe
- blower
- cooling
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Abstract
The utility model relates to fire fighting devices and technical field of safety protection, and in particular to a kind of device for improving smoke exhaust fan smoke exhaust efficiency.A kind of smoke exhaust fan air quantity multiplication cooling device, comprising: blower, air hose, the venturi reducing pipe and venturi venturi being arranged between blower and air hose；Venturi reducing pipe and venturi venturi are integrally formed, and the inlet of venturi reducing pipe and the fan outlet of blower connect, and venturi venturi is inserted into air hose；The outer surface of venturi venturi is disposed with cooling spray；Cooling spray is connected with cooling water pipe, for the flue gas injection water mist flowed out from venturi throat.The exhaust air rate of blower in actual use can be improved in the present apparatus, and cooling down processing is carried out to the fire smoke of exclusion, energy conversion is carried out using speedup depressurization, effectively increases the smoke exhaust efficiency of scene of fire, is a kind of efficient, energy-saving and environmental protection fire-fighting ancillary equipment.
Description
Technical field
The utility model relates to fire fighting devices and technical field of safety protection, and in particular to a kind of raising smoke exhaust fan
The device of smoke exhaust efficiency.
Background technique
In fire, destruction in addition to thermal-flame to lives and properties, to the maximum life threat of disaster affected people from combustion
The fire smoke generated is burnt, fire smoke has the characteristics that high temperature high fever, corrosivity, toxicity and light-proofness, seriously endangers the scene of a fire
In human life safety.According to statistics, the dead of 70%-80% is as caused by flue gas asphyxia on the scene of a fire.
The capital equipment for discharging flue gas is smoke exhaust fan, and smoke exhaust fan operating temperature in smoke exhaust process can achieve
500 DEG C or more, if motor is without good heat dissipation in the course of work, it is easy to fail because of high temperature, lead to smoke exhaust fan
It does not work, influences fire control smoke exhausting.
Utility model content
The purpose of this utility model is: for the smoke exhaust efficiency for increasing scene of fire, improving the row of blower in actual use
Air quantity, and cooling down processing is carried out to the fire smoke of exclusion, a kind of smoke exhaust fan air quantity multiplication cooling device is provided.
The technical solution of the utility model is: a kind of smoke exhaust fan air quantity multiplication cooling device, comprising: blower, is set air hose
Set the venturi reducing pipe and venturi venturi between blower and air hose；
Venturi reducing pipe and venturi venturi are integrally formed, the inlet of venturi reducing pipe and the fan outlet of blower
Connection, venturi venturi are inserted into air hose；
The outer surface of venturi venturi is disposed with cooling spray；Cooling spray is connected with cooling water pipe, is used for Xiang Congwen
The flue gas injection water mist of Qiu Li throat outflow.
Working principle are as follows:
Fire smoke has the characteristics that high temperature high fever, needs to carry out cooling treatment to it before its exclusion.In present apparatus work
During work, since the flue gas stream wind speed of venturi venturi outflow is larger, certain negative pressure will be generated around it, so that cold
But the water mist that spray head sprays is close to flue gas stream, realizes that water mist mixes with flue gas, and then reduce the temperature of fire smoke；Together
When due to venturi reducing pipe have enhancing air draught effect, it is possible to increase the exhaust air rate of blower.
Further, it is connected between the inlet of venturi reducing pipe and the fan outlet of blower by ready-packaged joint；
Ready-packaged joint includes: steel band shell, is padded in rubber and steel band fixator；Pad is for tapered to venturi in rubber
The joint place of the fan outlet of the inlet and blower of pipe carries out annular seal package；It is outer that steel band shell is socketed in pad in rubber
Side, for being compressed to pad in rubber；The both ends of steel band shell are arranged in steel band fixator, for consolidating to steel band shell
It is fixed.
Further, the quantity of cooling spray is 4, and 4 cooling sprays are in circumferential distribution at equal intervals.
Further, know that taper ratio cannot be excessive or too small by carrying out simulation analysis to venturi reducing pipe, it is too small
When venturi reducing pipe and venturi venturi become larger to the flow resistance of air-flow, although when excessive resistance reduce, due to text
The air-flow wind speed of venturi is smaller in mound, caused by vacuum effect it is unobvious, cause suction air volume to tail off；Taper ratio be in 0.5~
Preferable suction air volume can be obtained between 0.7.Further, when venturi reducing pipe and the taper ratio of venturi venturi are
When 0.6, effect is optimal.
Further, venturi reducing pipe is circular arc streamline, can be more using the venturi reducing pipe of circular arc streamline
Well adapt to fluid flowing, reduce flow resistance=increase blower exhaust air rate, the inlet diameter of venturi reducing pipe with it is used
Fan outlet diameter is consistent.
It further, need to be to venturi reducing pipe and venturi venturi since fire smoke has the characteristics that high temperature high fever
It is thermally insulated, avoids venturi reducing pipe from scalding fire fighter, therefore venturi reducing pipe and venturi venturi use carbon
Steel material, and inner surface is coated with phenolic composite heat insulation layer.
In above scheme, specifically, cooling water pipe is bonded with venturi reducing pipe with the outer surface of venturi venturi.
The utility model has the advantages that
The exhaust air rate of blower in actual use can be improved in the present apparatus, and carries out at cooling down to the fire smoke of exclusion
It manages, carries out energy conversion using speedup depressurization, effectively increase the smoke exhaust efficiency of scene of fire, be a kind of efficient, energy conservation, ring
The fire-fighting ancillary equipment of guarantor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is partial enlarged view when the utility model uses ready-packaged joint；
Fig. 3 is the structural schematic diagram of ready-packaged joint in the utility model.
Wherein: 1- venturi reducing pipe, 2- venturi venturi, 3- cooling water pipe, 4- cooling spray, 51- steel band shell,
Pad, 53- steel band fixator, 6- blower, 7- fan outlet, 8- air hose in 52- rubber.
Specific embodiment
Embodiment 1:
Referring to attached drawing 1, a kind of smoke exhaust fan air quantity multiplication cooling device, comprising: blower 6, is arranged in wind air hose 8
Between machine 6 and air hose 8 by entrance, contraction section and with the Venturi tube that venturi forms, enable entrance and contraction section for text
Reducing pipe 1 in mound, venturi are venturi venturi 2；Wherein entrance is cylindrical section, enables a diameter of D；Contraction section is conical pipe；
Venturi is straight pipe, enables a diameter of d；
Venturi reducing pipe 1 and venturi venturi 2 are integrally formed, the inlet of venturi reducing pipe 1 and the blower of blower 6
7 connection of outlet, venturi venturi 2 are inserted into air hose 8；
Circumferentially multiple cooling sprays 4 on the outer circumference surface of venturi venturi 2；Cooling spray 4 and 3 phase of cooling water pipe
Even, for the flue gas injection water mist flowed out from venturi throat 2.
Working principle are as follows:
Fire smoke has the characteristics that high temperature high fever, needs to carry out cooling treatment to it before its exclusion.In present apparatus work
During work, since the flue gas stream wind speed that venturi venturi 2 flows out is larger, certain negative pressure will be generated around it, so that
The water mist that cooling spray 4 sprays is close to flue gas stream, realizes that water mist mixes with flue gas, and then reduce the temperature of fire smoke
Degree；It is based on Venturi tube structure feature and air draught principle simultaneously, venturi reducing pipe 1 has the air draught effect of enhancing, it is possible to increase wind
The exhaust air rate of machine.
Embodiment 2
Referring to attached drawing 2, on the basis of embodiment 1, further, the inlet of venturi reducing pipe 1 and the wind of blower 6
It is connected between machine outlet 7 by ready-packaged joint；
Referring to attached drawing 3, ready-packaged joint includes: steel band shell 51, pad 52 and steel band fixator 53 in rubber；Pad in rubber
52 place's of docking progress annular seal package for the fan outlet 7 of the inlet and blower 6 to venturi reducing pipe 1；Steel band
51 circumferential direction of shell is socketed in 52 outside of pad in rubber, for compressing to pad 52 in rubber；Steel band fixator 53 is arranged in steel
Circumferential butt end with shell 51, for steel band shell 51 to be fixed.
Ready-packaged joint 5 during installation, first tenses steel band shell 51, and pad 52 in rubber rapidly will
The inlet of fan outlet 7 and venturi reducing pipe 1 is tightly bonded together, then will be outside steel band using steel band fixator 53
Shell 51 is fixed, to guarantee the sealing performance for being bonded position.
Embodiment 3
On the basis of embodiment 1 or 2, to cooling spray 4, venturi reducing pipe 1, venturi venturi 2 and cooling water
Pipe 3 further defines that
The quantity of cooling spray 4 is four, and four cooling sprays 4 are in circumferential distribution at equal intervals；It is connected with cooling spray 4
Logical cooling water pipe 3 is fitted in the outer surface of venturi reducing pipe 1 Yu venturi venturi 2.
Venturi reducing pipe 1 is circular arc streamline, can better conform to flow using the venturi reducing pipe 1 of circular arc streamline
The flowing of body reduces flow resistance=increase blower exhaust air rate, the inlet diameter and fan outlet used of venturi reducing pipe 1
7 diameters are consistent.
Know that taper ratio cannot be excessive or too small by carrying out simulation analysis to venturi reducing pipe 1, venturi when too small
Reducing pipe 1 and venturi venturi 2 become larger to the flow resistance of air-flow, although resistance reduces when excessive, due to venturi larynx
The air-flow wind speed in road 2 is smaller, caused by vacuum effect it is unobvious, cause suction air volume to tail off；Taper ratio d/D is in 0.5~0.7
Between can obtain preferable suction air volume.In this example, the taper ratio d/D of venturi reducing pipe 1 and venturi venturi 2 is 0.6.
Since fire smoke has the characteristics that high temperature high fever, venturi reducing pipe 1 and venturi venturi 2 need to be thermally shielded
Processing avoids venturi reducing pipe from scalding fire fighter, therefore venturi reducing pipe 1 and venturi venturi 2 use carbon steel material,
And inner surface is coated with phenolic composite heat insulation layer.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (8)
- The cooling device 1. a kind of smoke exhaust fan air quantity doubles, comprising: blower (6) and air hose (8)；It is characterized in that, the dress It sets further include: the venturi reducing pipe (1) and venturi venturi being arranged between the blower (6) and the air hose (8) (2)；The venturi reducing pipe (1) and the venturi venturi (2) are integrally formed, the entrance of the venturi reducing pipe (1) Place is connect with the fan outlet (7) of the blower (6), and the venturi venturi (2) is inserted into the air hose (8)；The outer surface of the venturi venturi (2) is disposed with cooling spray (4)；The cooling spray (4) and cooling water pipe (3) phase Even, it is used for the flue gas injection water mist flowed out from the venturi venturi (2).
- The cooling device 2. smoke exhaust fan air quantity as described in claim 1 doubles, it is characterised in that: the venturi reducing pipe (1) it is connect between inlet and the fan outlet (7) of the blower (6) by ready-packaged joint；The ready-packaged joint (5) includes: steel band shell (51), the interior pad (52) of rubber and steel band fixator (53)；The rubber Interior pad (52) be used for the fan outlet (7) of the inlet and blower (6) of the venturi reducing pipe (1) dock place into Row annular seal package；Steel band shell (51) circumferential direction is socketed in the rubber on the outside of pad (52), for the rubber Interior pad (52) is compressed；The steel band fixator (53) setting in the circumferential butt end of the steel band shell (51), for pair The steel band shell (51) is fixed.
- The cooling device 3. smoke exhaust fan air quantity as claimed in claim 1 or 2 doubles, it is characterised in that: the cooling spray (4) Quantity be two or more, circumferential equidistantly distributed of more than two cooling sprays (4) along the venturi venturi (2).
- The cooling device 4. smoke exhaust fan air quantity as claimed in claim 1 or 2 doubles, it is characterised in that: the venturi is tapered The taper ratio for managing (1) and the venturi venturi (2) is between 0.5~0.7.
- The cooling device 5. smoke exhaust fan air quantity as claimed in claim 4 doubles, it is characterised in that: the venturi reducing pipe It (1) is 0.6 with the taper ratio of the venturi venturi (2).
- The cooling device 6. smoke exhaust fan air quantity as claimed in claim 1 or 2 doubles, it is characterised in that: the cooling water pipe (3) It is bonded with the venturi reducing pipe (1) with the outer surface of the venturi venturi (2).
- The cooling device 7. smoke exhaust fan air quantity as claimed in claim 1 or 2 doubles, it is characterised in that: the venturi is tapered Managing (1) is circular arc streamline, and the inlet diameter of the venturi reducing pipe (1) is consistent with fan outlet used (7) diameter.
- The cooling device 8. smoke exhaust fan air quantity as claimed in claim 1 or 2 doubles, it is characterised in that: the venturi is tapered It manages (1) and the venturi venturi (2) uses carbon steel material, and inner surface is coated with phenolic composite heat insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821808682.9U CN209294132U (en) | 2018-11-02 | 2018-11-02 | A kind of smoke exhaust fan air quantity multiplication cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821808682.9U CN209294132U (en) | 2018-11-02 | 2018-11-02 | A kind of smoke exhaust fan air quantity multiplication cooling device |
Publications (1)
| Publication Number | Publication Date |
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| CN209294132U true CN209294132U (en) | 2019-08-23 |
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ID=67647685
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821808682.9U Active CN209294132U (en) | 2018-11-02 | 2018-11-02 | A kind of smoke exhaust fan air quantity multiplication cooling device |
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| CN (1) | CN209294132U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113892889A (en) * | 2021-10-15 | 2022-01-07 | 嵊州市浙江工业大学创新研究院 | Dish washing machine with inlet speed increasing device and operation method thereof |
-
2018
- 2018-11-02 CN CN201821808682.9U patent/CN209294132U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113892889A (en) * | 2021-10-15 | 2022-01-07 | 嵊州市浙江工业大学创新研究院 | Dish washing machine with inlet speed increasing device and operation method thereof |
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