CN103348191A

CN103348191A - Extraction fan assembly including damper that closes firmly when the fan is not running and reduces pressure drop when fan is running at full speed

Info

Publication number: CN103348191A
Application number: CN2011800658881A
Authority: CN
Inventors: 罗伯特·拉布雷克
Original assignee: 罗伯特·拉布雷克
Current assignee: Group Luo Man Company
Priority date: 2010-12-13
Filing date: 2011-12-07
Publication date: 2013-10-09
Anticipated expiration: 2031-12-07
Also published as: WO2012079167A1; EP2652413A1; CA2927369C; CA2822971A1; CA2927369A1; CA2822971C; CA2748452A1; CA2748452C

Abstract

An extraction fan has a housing mounted in a wail with an outlet duct extending through the wall to an outlet opening outside the wail. A damper flap is mounted on the fan suspended by a hinge at an upper edge so as to extend in a closed position across the opening and is movable to an open position under forward air flow from the fan, and tightly closes against a resilient deformable seal when the fan is shut off. A spring biasing cam applies inwards force to the damper flap to bias the damper flap into the closed position, and an outwards force also to bias the damper flap into the fully open position. The mounting plate includes a hood having a top wall extending over the top of the damper flap and a down-turned front flange extending parallel to the damper flap to a bottom edge.

Description

Be included in fan firm closure and when the fan full speed running, reduce the scavenger fan assembly of the air door of pressure drop when not moving

Technical field

The present invention relates to fan structure, it comprises air door, and this air door is closed to prevent that air from refluxing securely when moving when the fan inoperation or when the strong oppositely wind-force of fan opposing and with minimum speed.This device also reduces pressure drop when the fan full speed running.

Background technology

In recent years, the disease that prevents Stable reached that all air of attempting to guarantee to enter canopy are filtered can be via the such degree of airborne pathogen.For this reason, many companies provide the system of filtered air when air inlet.Usually, air inlet is communicated with the roof space, and air enters housing region by ceiling, and also enters housing region from wall.This filtering diaphragm that can engage with air when being provided at air and entering the roof space is realized, perhaps can realize by the independent diaphragm assembly that is attached to the setting of each admission line on the air inlet openings in the roof space.

For example the Noveko of Quebec is proposing to have done many work aspect the improved barrier film, and improved barrier film provides filtration system efficient and with low cost.Yet, being known that pathogen still can enter housing region by the fan shutter, disease still can be attacked, and brings very large loss usually.

Yet, be known that pathogen still can enter housing region by the fan shutter owing to known air negative pressure (0.05 to 0.2 inches of water(in H) in the building.Test shows, not 24 of operation " even fan also can allow nearly the viral contaminated air of 400cfm to enter building ({ inner static pressure is 0.05 inches of water(in H) under the situation of shutter closure; the operation fan of 3x24 " fan may allow as 12 " enters building being used for that viral contaminated air is pushed viral contaminated air so much under the situation of building; this may cause the invasion and attack via airborne pathogen, brings very large loss usually.

Related animal is pig and poultry normally, but other animal also needs same protection certainly, avoids the invasion and attack via airborne pathogen.

Structure as herein described not only can be applied to animal restriction canopy industry, can also be applied to any other industry that will ventilate, for example industry, commercial, dwelling house is used or any other whatsoever reason must control the place of backflow.

Summary of the invention

The object of the present invention is to provide the fan structure with air door baffle plate, to prevent the reverse flow of air when not required.

According to an aspect of the present invention, provide a kind of damper board component, it is used for Stable, and this Stable comprises:

Housing region;

Feed a plurality of air intakes of housing region, wherein each air intake has air filtering system, to be used for discharging pathogen from the air of introducing, propagates into animal thereby ward off disease;

And a plurality of scavenger fan structures, it flows for generation of the air that leaves housing region, thereby the air of changing is drawn in the housing region by air intake;

Each fan structure comprises:

Blower-casting;

Fan, it is installed in the blower-casting;

And the damper board component, it is installed on the blower-casting, and this damper board component comprises:

Installing plate, it has opening and flange, and air passes this opening, and this flange is around this opening;

The air door baffle plate, it is suspended at upper edge by the articulated section, and pivots around this top edge, crosses this opening thereby extend in closing position, and wherein the neighboring part of air door baffle plate engages with the flange that centers on opening;

Leave flange by pivoting in the articulated section under the effect that this air door baffle plate can flow at the air forward from fan and move to open position;

And resilience deformable seal part, it is between the neighboring part and flange of air door baffle plate, is arranged to seal the air door baffle plate, to prevent that air is by the reverse flow of blower-casting.

Preferably, the seal is carried on the neighboring part of air door baffle plate.

Preferably, the seal comprises the deformable fin.

Preferably, installing plate comprises the top covering, and this top covering extends from the articulated section in the over top of air door baffle plate.

Preferably, the top covering has the flange under turning to, to engage the air door baffle plate and to prevent that the pivoting action of air door baffle plate from surpassing predetermined angular.

Preferably, be provided with abutting member, when fan during with low-speed running, the opposite wind-force of this abutting member opposing remains on the air door baffle plate in the position of opening slightly.

Preferably, abutting member can be withdrawn, to allow closed air door baffle plate.

Preferably, abutting member can be operated by remote control.

Preferably, be provided with breech lock, this breech lock is provided for the air door baffle plate is remained on closing force in the closing position.

Preferably, breech lock comprises the magnetic stripe of the periphery that centers on the air door baffle plate and/or the magnet of locating in the bottom of baffle plate.

Preferably, the air door baffle plate comprises the flat panel that can be completely cut off.

Preferably, the damper board component is installed on the outboard end of blower-casting.

Preferably, blower-casting has extra shutter closure member.

Preferably, the damper board component is installed on the blower-casting at the inner end place.

Preferably, be provided with the heating wire rod, with heated sealant spare, thereby prevent freezing.

Preferably, air intake is arranged in the ceiling place and/or wall of housing region, is communicated with the roof space of housing region top.

Preferably, each air intake comprises the filter assemblies that is carried in the roof space.

Preferably, except entrance and scavenger fan, housing region is sealed and air that do not allow to contain pathogen enters.

According to another aspect of the present invention, be provided for the damper board component of blower-casting, fan is installed in the housing, and fan can be with high speed and low-speed handing, and wherein the damper board component is installed on the blower-casting, and the damper board component comprises:

This air door baffle plate can leave flange by pivoting in the articulated section during with low speed or high speed operation at fan and move to open position under the effect from the stream of air forward of fan;

Wherein be provided with abutting member, when fan during with low-speed running, the opposite wind-force of this abutting member opposing remains on the air door baffle plate in the position of opening slightly.

Preferably, abutting member can be operated by remote control.

According to another aspect of the present invention, provide the damper board component, it is used for being installed in fan structure, and this fan structure has blower-casting and the fan that is installed in the housing;

This damper board component comprises:

The air door baffle plate of An Zhuaning pivotally, it is arranged to extend in closing position when fan does not move and crosses this opening, and wherein the neighboring part of air door baffle plate engages with the flange that centers on this opening;

Leave flange and move to the fully open position from closing position by way of partially opening the position by pivoting in the articulated section under the effect that the air door baffle plate can flow at the air forward from fan;

And voltage biasing structure, it is used for applying power to the damper plate, the spring voltage biasing structure is arranged to, and on partially opening a side of position the air door baffle plate is biased in the closing position, and on partially opening the relative opposite side of position the air door baffle plate is biased in the fully open position.

Preferably, the air door baffle plate is suspended at upper edge by the articulated section, and pivots around this top edge.

Preferably, be provided with resilience deformable seal part, it is between the neighboring part and flange of air door baffle plate, is arranged to sealing air door baffle plate when fan does not move, to prevent that air is by the reverse flow of blower-casting.

Preferably, wherein voltage biasing structure comprises be used to the spring that spring force is provided.

Preferably, voltage biasing structure comprises the cam face that engages with cam follower, and its medi-spring applies spring force between cam follower and cam face.

Preferably, cam follower is attached to the air door baffle plate.

Preferably, cam follower is installed on the lever, and this lever is attached to the air door baffle plate to move pivotally with this air door baffle plate.

Preferably, cam face is installed pivotally, and spring is arranged to make cam face to pivot along the direction that applies power to cam follower.

Preferably, but be provided with operating means, but should be used for applying extra power to voltage biasing structure by operating means, with increase power.

Preferably, but should operating means depend on the operation of fan.

Preferably, cam face is included in the recess that partially opens the position, thereby applies power to the damper plate when moving when the strong reverse wind-force of fan opposing and with minimum speed, partially opens in the position to be tending towards the air door baffle plate remained on.

Preferably, apply power to the damper plate when voltage biasing structure is arranged to move when the strong reverse wind-force of fan opposing and with minimum speed, partially open in the position to be tending towards the air door baffle plate remained on.

Preferably, installing plate comprises cover, the anterior lip under this cover has roof and turns to, and this roof extends in the over top of air door baffle plate, and the anterior lip under this turns to down and is onwards extended along the air door baffle plate, air is pushed away the wall of building.

Preferably, the anterior lip under turning to is extended abreast with air door baffle plate in being in a fully open position.

Preferably, the anterior lip under turning to is at the bottom margin place of air door baffle plate or surpass the bottom margin of air door baffle plate and extend to the bottom margin of flange.

Preferably, installing plate comprises cover, the anterior lip under this cover has diapire and turns to, and this diapire extends forward from installing plate, and the anterior lip under turning to down and is onwards extended, air is pushed away the wall of building.

Preferably, voltage biasing structure comprises engagement member, and this engagement member acts on the air door its centre along its centre line, with the power on the edge of balanced air door baffle plate.

This damper board component comprises:

Wherein installing plate comprises cover, the anterior lip under this cover has roof and turns to, and this roof extends in the over top of air door baffle plate, and the anterior lip under this turns to down and is onwards extended along the air door baffle plate.

Preferably, the anterior lip under cover has diapire and turns to, this diapire extends forward from installing plate, and the anterior lip under turning to down and is onwards extended, air is pushed away the wall of building.

This damper board component comprises:

The air door baffle plate has the front surface that deviates from fan forward and towards the rear surface of fan;

The air door baffle plate suspends by the articulated element adjacent with the top edge of air door baffle plate, and pivots around the hinge axes of articulated element;

Articulated element comprises horizontal support piece and at least one support arm, this horizontal support piece is in the hinge axes place, described at least one support arm is adjacent to extend from horizontal support piece and top edge forward on the direction of the position in the place ahead of air door baffle plate at the air door baffle plate, and described at least one support arm is connected to the air door baffle plate by the position of connecting elements below the top of air door baffle plate.

Preferably, described connecting elements is arranged near the cross central line of air door baffle plate or the position of below.

Preferably, described at least one arm only is connected to the air door baffle plate at described connecting elements place, with the top that allows the air door baffle plate and bottom margin with respect to described connecting elements deflection.

Preferably, described at least one support arm comprises foil portion, and this foil portion extends and spaced apart with the front surface of baffle component along the front surface of baffle component.

Preferably, be provided with at least one carriage, described at least one carriage is fastened to the front surface of baffle component, and the described foil portion of described at least one support arm engages with this carriage.

Preferably, foil portion comprises bar, and the hole of this bar by carriage engages.

Preferably, horizontal support piece is positioned at the position in the vertical plane, and this vertical plane is in the back of the rear surface of baffle component.

Preferably, horizontal support piece is positioned at the height place of the top top of baffle component.

Preferably, baffle component only moves to closing position by the gravity effect.

Preferably, be provided with the spring voltage biasing structure, this spring voltage biasing structure is along applying biasing force towards open position with towards the both direction of closing position to described at least one arm.

Preferably, the spring voltage biasing structure comprises two springs can regulating independently.

Preferably, described two springs are arranged to provide different power to the damper plate, make independent regulation provide the difference of biasing force to change.

Preferably, in two springs one is arranged on the side of articulated element, and another is arranged on the opposite side of articulated element.

Preferably, described at least one arm comprises laterally isolated two arms, thereby each arm is positioned on the respective side of vertical center line of baffle component.

Preferably, two arms are installed on two independent parts of horizontal support piece, make arm to pivot independently.

This damper board component comprises:

Articulated element comprises the horizontal support piece that is in the hinge axes place and isolated two suspension arms laterally, thereby each suspension arm is positioned on the respective side of vertical center line of baffle component.

Preferably, each in the described arm is connected to the air door baffle plate by connecting elements, and this connecting elements is arranged near the cross central line of air door baffle plate or the position of below.

Preferably, each front surface along baffle component of described suspension arm extends and is spaced apart with the front surface of baffle component.

This damper board component comprises:

The air door baffle plate suspends by the articulated element adjacent with the top edge of air door baffle plate, and pivots around hinge axes and at least one support arm of articulated element;

Wherein be provided with the spring voltage biasing structure, this spring voltage biasing structure is along applying biasing force towards open position with towards the both direction of closing position to described at least one arm;

And its medi-spring voltage biasing structure comprises two springs can regulating independently.

This damper board component comprises:

Described at least one arm is connected to one, and this axle pivots around its longitudinal axis;

Its medi-spring voltage biasing structure comprises first lever that is connected with axle and acts on the lever so that the spring that axle pivots;

Wherein be provided with second lever and connect first lever and the meshing gear of second lever, the associated movement in opposite direction so that first lever and second lever pivot along with axle;

And its medi-spring is connected between two levers, and passes through the center when lever rotates, thereby at side upper edge first direction bias voltage first lever of crossing the center, and at opposite side upper edge second direction bias voltage first lever of crossing the center.

This structure that this paper limits is according to its shape and structure, can only utilize gravity to be used for closed baffle plate.Yet, in some cases, being provided with the spring voltage biasing structure, this spring voltage biasing structure is along applying biasing force towards open position with towards one or two direction of closing position to described at least one arm.

When using, preferably, the spring voltage biasing structure comprises two springs can regulating independently.

According to a second aspect of the invention, provide the damper board component, it is used for being installed in fan structure, and this fan structure has blower-casting and the fan that is installed in the housing;

This damper board component comprises:

The air door baffle plate can leave flange and move to the fully open position from closing position by pivoting in the articulated section partially opening between the position under the effect from the stream of air forward of fan;

According to a third aspect of the present invention, provide the damper board component, it is used for being installed in fan structure, and this fan structure has blower-casting and the fan that is installed in the housing;

This damper board component comprises:

A key point of this new type auto mechanism as herein described is, during when fan does not move fully or when fan opposing high wind opposite force and with low cruise (under latter event, covering is opened slightly and is automatically remained in this position mechanically), almost 100% backflow of control (when covering is closely closed) is for example to prevent that any pathogen infiltration is in airfiltering confinement building.

Second key point is, compares with the conventional air door that uses in the agricultural, and this new type auto structure has increased the efficient above 15% when the fan full speed running.This can apply power to help baffle plate and open and to be avoided thus or reduce pressure drop making an explanation by this mechanism under its maximum opening.When the fan of routine is dirty, fan efficiency even descend manyly.When fan moves with minimum speed, device with butt selection has increased the efficient of fan, reason is that externally ported design allows to stop up any relative wind-force from any direction, thereby even also can allow air fully freely to discharge towards the outside under the situation of strong wind-force relatively.

Seal can be carried on the neighboring part of air door baffle plate.

Preferably, seal comprises the deformable fin, and this deformable fin can obtain sealing effectiveness thus easily being out of shape under the effect of the related less power of gravity effect on the air door baffle plate and under the effect of the back pressure that flows from opposite air.

Usually, opening is rectangle, but other shape also is fine, and is especially circular.

Preferably, installing plate comprises cover, and this cover extends from the articulated section in the over top of air door baffle plate; the pollutant that avoids falling to keep protection is for example avenged, preferably; cover has the flange under turning to, to engage the air door baffle plate and to prevent that the pivoting action of air door baffle plate from surpassing predetermined angular.

Preferably, be provided with abutting member, for example be carried on the pin on the installing plate, being used for that the air door baffle plate is remained on the position of opening slightly, but abutting member can be for example remote control withdrawal by electric operation, to allow closed air door baffle plate.Key point is to be provided with abutting member, and it is used for keeping baffle plate crack, overflows under the protection of opposing wind-force to allow low-flow.Can adopt the abutting member of other shape and structure, and they can activate in the many modes different with described electrical solenoid before.

Preferably, be provided with breech lock, to be provided for that the air door baffle plate is remained on closing force in the closing position, when baffle plate is closed, provide the closing force of increase, but just can be discharged into open position as long as air-flow produces the power that enough overcomes breech lock.Breech lock can be around the magnetic stripe of the periphery of air door baffle plate or be positioned at the magnet at the place, bottom of air door baffle plate.Can use breech lock or the system of other type, for example spring or counterbalance etc. remain on baffle plate in the closing position with help, as long as stream operated is left closing position so that baffle plate moves, breech lock just discharges.

Preferably, the air door baffle plate comprises flat panel, and it can be the isolated panel of foamed material or the flat member of similar rigidity.Can use the baffle plate of other structure, it can need not to be isolated.

Preferably, the damper board component is installed on the outboard end of blower-casting, and in this case, blower-casting can keep or comprise extra shutter closure member at the wall opening place.

Perhaps, the damper board component can be installed on the blower-casting at the wall opening place in building.

Can be provided with the heating wire rod, with heated sealant spare, thereby prevent freezing.

Preferably, the articulated section is flexible band, and this flexibility band extends to installing plate from the air door baffle plate, and is installed on the gasket strip at the installing plate place.The articulated section of other type also can be used for this purpose, and their opposings are stopped up or be freezing, but they do not limit air-flow.

Preferably, air intake is arranged in the ceiling place of housing region, is communicated with the roof space of housing region top.Yet the filtered air entrance can have other position, and can adopt many different canopy Design of ventilation.Preferably, each air intake comprises the filter assemblies that is carried in the roof space.Yet the air stream that enters the roof space by eaves can be installed in outside filter filtration, and this filter adds on the outside of building.Certainly expectation is, except entrance and scavenger fan, housing region is sealed and air that do not allow to contain pathogen enters.

Said structure can have two different and purposes independently.For the air filtration canopy of pig and the canopy that is used for poultry, at first be when fan does not move, to limit virus contained in the return air to infiltrate the fan shutter.Next be when fan with at a slow speed or minimum speed when operation restriction to the windage of fan, reflux with the air that prevents the pathogen contamination thing.

The sealing that it has been determined that the conventional shutter that agriculture fan is used is not enough to anti-backflow and virus pollution.

Thereby baffle plate and pin action control is when the fan minimum ventilation rate of wafter during to wind-force.This can be used for the air filtration canopy, even can be used for not having the canopy of air cleaner.

Increase pin at place, the bottom of panel and be used for making it possible to the minimum aperture that keeps continuous, it can change between 0.5 to 6 inch according to the remote adjustment of pin.Then, though the wafter of slow running to strong wind, this air door also will stay open, air can easily be blown out by fan, thereby the air that prevents the pathogen contamination thing is back in the airfiltering canopy.Under the situation that is not airfiltering canopy, target is not to prevent that virus from propagating, but only controls minimum ventilation rate, even at wind condition or do not have under the wind condition.Even purpose is the air quality that also can improve when wind is faced fan in the canopy.This will allow the operator to be easy to the minimum adjusting of ventilating, and reduce the cost of energy of fan operation and building heating.

In order to have better minimum ventilation rate control, can remove the standard shutter that is installed on the fan.

In filtering building, this structure can allow the number of fans in the first and second ventilation levels to reduce by using bigger fan, thus the risk that the virus that reduces to be refluxed by air is polluted, and reduce energy consumption.Adopt a higher flows in the first and second ventilation levels, also will allow to reduce the number of fans of level three and following stages.In some cases, this feature will allow to avoid adopting level three and following stages.

In the pig and poultry canopy of non-filtration, this feature allows to have better minimum ventilation rate control during wind-force.When wind during from fan directional, this has restriction effect at fan airstream.When fan moved with its minimum speed, high wind may almost completely stop up air-flow, and causes the problem of air quality in building, and reason is that pollutant still is in the canopy.So this baffle plate assembly will help to optimize air quality control and the heating cost in the canopy.In addition, by adopting bigger fan, this concept can allow to reduce the number of fans of the first and second ventilation levels, and reduces energy consumption.

The basic conception of this improved backflow air door baffle design comprises increases new type auto system, and this system does not need the electric power for its operation, allows by the mechanical applied pressure on the air door baffle plate, makes air door baffle plate absolutely gas-tight when fan does not move.Second importance is, when fan moved, the air door baffle plate caused airflow limitation (comparing with 15% of the conventional air door that uses in the agriculture fan, less than 1%) hardly, the air door baffle mechanism applies significant outside power at the air door baffle plate, opens to keep it.The 3rd aspect of this backflow air door baffle design be, its air door baffle plate that allows to use at the large scale fan quantity reduce (but size is bigger), compare with the traditional air door that is characterized as a plurality of shutters, this allows much smaller airflow limitation.

Can have one or more in the following feature and advantage as this novel backflow air door baffle system of hereinafter describing in more detail.

It can be used for variable speed fan or single speed fan, and this is the difference with competing product.

Its mechanism allows to apply significant power at the air door baffle plate, in order to when fan does not move, prevent any air filtration, and when fan move maintenance damper plate portion ground or fully open.Main is it is also noted that, two kinds of effects are played by same mechanism, keeps the damper plate closing when fan does not move, and when fan moves maintenance damper plate portion or open fully.

With sell on the current market, shutter compared by the expensive air door that electro-motor starts, it is not need electric power, simple, low-cost and non-maintaining mechanical system.

The feature of this backflow air door baffle plate also is the rubber strip on its edge, and when fan did not move, this rubber strip was optimized air-tightness, compares with any traditional air door that passes through gravity effect closure that uses in the agricultural, and it has more advantages.

When fan moved, light-duty air door baffle plate self caused airflow limitation hardly, and this allows to increase the air-flow that is discharged to outside the building.When many fans need be to certain constructure ventilation, increase this mode of the air-flow of discharging from building by each fan, allow to reduce the power of fan, and/or allow to avoid using one or more fans simply, thereby save energy.

This system recently saves electric power by improving every watt of cfm.For the fan of full speed running, adopt identical energy, increased the air-flow (every watt of higher cfm ratio) of discharging from building.

This system can be used for following target market any one or a plurality of

Current must or plan have air filtration confinement building, and be desirably in and stop up the animal-breeding field that filtered air not refluxes when fan does not move.

But having does not need to prepare air cleaner wishes to increase by the efficient producer of fan from building discharge air-flow.This is to realize by traditional air door being replaced with backflow air door baffle plate, and it can be installed on the inside or outside of building wall.The air door baffle plate helps to reduce energy consumption in addition and/or improves air quality in the building.

For this client of two types, backflow air door baffle plate has also been eliminated the needs of use conventional fan dry monsoon door shield plate (covering in winter), save annual installation and removed labor cost, and eliminated the needs that are used for the memory space of these dry monsoon door shield plates in summer.Produced the heating needs of increase by the cold air infiltration of off-duty fan the season in cold, this means that heating building needs higher energy consumption.

At the animal of pig, chicken and other type confinement building, have in the section of the air filtration building target of pig market (especially for) of negative pressure, particularly importantly low-cost, non-maintaining for backflow air door baffle plate, the most important thing is air-tightness to avoid filtered air not by the infiltration of off-duty fan, perhaps the infiltration by the fan that need under the situation of strong apparent wind, move with minimum speed.

The major advantage of airtight air door baffle plate that is used for animal confinement building is as described below:

Prevent from maybe may transmitting via airborne parasite, the air-flow do not expected the infiltration of the backflow (using for airfiltering building) via airborne pathogen.

Replace traditional covering in winter, to prevent the cold air infiltration

When adding traditional air door (use for airfiltering building, when traditional air door increases airtight air door baffle plate, recommend very much) to, the air-flow of being discharged by fan there is not negative effect

When in non-filtration building is used, removing the conventional fan shutter, increased the air-flow of discharging from building

Satisfy the needs of all animal-breeding fields, comprise those plants with air filtration building

Compare with those market competition products that only are used for independent fan, can be used for variable speed fan or single speed fan (on-off) equally

Be used for all fan dimensions

Be easy to install

Mechanism is simple, does not need electric power

Non-maintaining, and reduced the corrosion of the metal sheet outer wall of animal confinement building

When fan because any former thereby close or automatically closed when stopping

Can not produce dust or dirt

Be easy to the pressure disc cleaning

The air that is designed to especially to discharge pushes away building, otherwise the air of discharging has been notified the corrosion that causes outer wall

Prevent air, pathogen, dust or dirt infiltration building in the time of on being installed in outer wall, keep the fan area cleaning, and allow easily to enter fan and needn't remove backflow air door baffle plate, thereby eliminated potential risk via airborne pathogen infiltration.

Negative pressure in the building is more high, and then the air-tightness of air door baffle plate is more good.

In this structure, the particularly important is, in the air filtration building when fan does not move air door baffle plate air tight closure or keep air tight closure, and air door baffle plate self can not produce any restriction when fan operation.

As described herein, this novel airtight backflow air door baffle plate can be installed in (see figure 8) on the inwall of building, or is installed in (Fig. 3) on the outer wall.

This airtight backflow air door baffle plate can be installed in scope from the fan of any kind of 10 " to 55 ".

As mentioned below, this novel airtight backflow air door baffle plate is installed on the outer wall of building (Fig. 9) usually, but it also can be installed on the inwall.

This airtight backflow air door baffle plate can be installed on the fan inside of any 10 " to 55 ", but it also can be used for the fan of large-size.

When fan under the situation of strong apparent wind during with low cruise, this novel air door baffle mechanism also allows to keep backflow air door baffle plate to be in minimum aperture to set, with the air-flow that prevents that wind effect is outside.In airfiltering building, when fan was out of service, the minimum aperture function of this mechanism was automatically invalid by solenoid (optionally), and this makes the air door baffle plate closed immediately.

In traditional non-filtration building, idea is the shutter that is removed and replaced standard by airtight air door baffle plate fully, but here, the air door baffle plate need be as so not airtight in airfiltering building is used, and its main target is the infiltration that prevents via airborne virus.Air door baffle plate and novelty mechanism thereof still provide following some advantages:

No matter when fan is operated, and the air door baffle plate can not cause airflow limitation, and this has increased the swept volume of the fan under the specified power, by increasing every watt of cfm than having improved energy efficiency.

In the winter time, the air door baffle mechanism is automatically closed, and makes backflow air door baffle plate airtight, with any infiltration by off-duty fan of the cold air that prevents from not expecting, thereby need traditional covering in winter be installed at fan outlet,

When fan during with low cruise, the air door baffle mechanism also allows to lock backflow air door baffle plate and is in minimum aperture and sets, with the air-flow that prevents that wind effect is outside.In airfiltering animal confinement building, when fan did not move, air door baffle plate locking mechanism was automatically invalid by solenoid, and this makes the air door baffle plate closed immediately.

As mentioned below, novel airtight backflow air door baffle plate can be installed in (see figure 8) on the inwall of building, or is installed in (Fig. 3) on the outer wall

As described herein, this novel airtight backflow air door baffle plate is installed on the outer wall of building (Fig. 9) usually, but it also can be installed on the inwall, and in this case, does not conflict with wind control.

In commerce, social framework and industrial market, this airtight backflow air door baffle plate also can be used on the fan or air duct entrance or outlet of any kind.In the winter time, the air door baffle plate can be closed, to avoid heat loss and to save energy, perhaps stays open when fan moves.It keeps minimum aperture to set in the time of can also needing minimum air flow control under the situation that has strong wind-force relatively, in this case, and the interesting and valuable characteristic of the automatic minimum aperture functional representation of mechanism.

Backflow air door baffle mechanism allows closed air door baffle plate when needed, or keeps the air door baffle plate to open when fan moves, and both of these case is all saved energy.

This structure can also be used for house market, for example as dryer air door, stove fan air door, air exchange air door or stove entrance and exit air door.In the winter time, the air door baffle plate can be closed, to avoid heat loss and to save energy, perhaps keeps opening wholly or in part when fan moves, and can not cause the air flow restriction, and this also saves energy.

The present invention can also be configured to a kind of assembly, and it comprises: fan; Blower-casting, it is used for the air in guiding fan downstream; And the damper board component that is defined as above.

Preferably, fan has variable speed motor, controls this variable speed motor by the frequency that changes power supply.

Preferably, blower-casting comprises cone, and the shape of this cone forms the air stream maximizing efficiency that makes the fan downstream, and the damper board component is installed on the rearward end of cone.

Description of drawings

Referring now to accompanying drawing one embodiment of the present of invention are described, wherein:

Fig. 1 is the plane that comprises according to the canopy of fan structure of the present invention;

Fig. 2 is the vertical cross-section figure of the canopy of Fig. 1;

Fig. 3 is the cross-sectional view that amplifies along the ratio of the line identical with Fig. 2, shows a kind of fan structure, during wherein the closure member baffle plate is shown in an open position;

Fig. 4 is the anterior elevational view of the fan structure of Fig. 3.

Fig. 5 is the cross-sectional view that ratio Fig. 3 further amplifies, and shows only part of fan structure, and during wherein the closure member baffle plate was in the close position, magnet was in the place, bottom of baffle plate;

Fig. 6 is the cross-sectional view that ratio Fig. 3 further amplifies, and shows only part of fan structure, and wherein the closure member baffle plate is in a partly opened position, and stays open by pin;

Fig. 7 is the further cross-sectional view of the embodiment of the modification of amplification of ratio Fig. 3, shows only part of fan structure, and during wherein the closure member baffle plate was in the close position, magnet was on the periphery of baffle plate;

Fig. 8 is and the similar cross-sectional view of Fig. 3, shows the fan structure of modification, and the wall opening of its closure member baffle plate assembly in building located in the entrance end everywhere.

Fig. 9 is and the similar cross-sectional view of Fig. 3, shows the fan structure of modification, and it does not have the external pipe on the blower-casting, thereby closure member baffle plate assembly wall opening place outside the building is directly installed on the blower-casting.

Figure 10 is and the similar cross-sectional view of Fig. 3, shows the fan structure of modification, and it provides the closure member baffle plate more than delegation.

Figure 11 is the cross-sectional view of another embodiment, shows

The cover of revising and comprise extra mechanism (partly illustrating) applying spring force to the damper plate, is opened fully and fully in the closing position thereby the air door baffle plate is biased into, and is shown the air door baffle plate that is in the complete closing position.

Figure 12 is the side front view of another embodiment of Figure 11, illustrate in greater detail extra mechanism to apply spring force to the damper plate, thereby the air door baffle plate is biased into opens fully and fully in the closing position, and show air door baffle plate in being in a fully open position.

Figure 13 for see from front side and a side etc. axonometric drawing.

Figure 14 is and the similar side front view of Figure 12, show the extra mechanism that applies spring force to the damper plate with bigger ratio, show the air door baffle plate that is in the complete closing position, and show and apply extra power so that the air door baffle plate moves to the optional solenoid that partially opens the position.

Figure 15 is and the similar side front view of Figure 12, show when needed to the damper plate with bigger ratio and to apply spring force to keep the extra mechanism of damper plate closing, show the air door baffle plate that is in the complete closing position, and show the optional solenoid that increases spring force when needed.

Figure 16 is and the similar side front view of Figure 12 to show when needed and apply spring force to keep alternative mechanism of damper plate closing to the damper plate.

Figure 17 is and the similar side front view of Figure 12 to show and apply spring force another alternative mechanism that is used for the single speed fan to keep the damper plate closing or to open fully when needed.

Figure 18 is the side front view of housing and baffle component, only shows for another alternative mechanism of installing and controlling baffle component.

Figure 19 is the housing of Figure 18 and the anterior elevational view of baffle component.

Figure 20 be the housing of Figure 18 and baffle component etc. axonometric drawing, show alternative structure of spring bias system.

Figure 21 is the side front view of housing and baffle component, only shows for another alternative mechanism of installing and controlling baffle component.

Figure 22 is the side front view of housing and baffle component, only shows another the alternative mechanism for the control baffle component.

In the accompanying drawings, in different figure, identical Reference numeral is represented corresponding part.

The specific embodiment

In Fig. 1 and 2, show Stable 100, it comprises the peripheral wall 101 that defines housing region 102.Roof 103 defines the roof space 104 above ceiling 105.

The entrance that a plurality of air intakes 106 provide air to enter housing region, wherein each air intake 106 has air filtering system 107, to be used for discharging pathogen from the air of introducing, propagates into animal thereby ward off disease.

A plurality of scavenger fan 110 surrounding walls are positioned at the spaced positions place, with for generation of the air stream that leaves housing region, thereby produce air negative pressure in canopy, are drawn in the housing region by air intake 106 with the air that will change.Except entrance and scavenger fan, housing region is sealed and air that do not allow to contain pathogen enters.

Scavenger fan can be driven with the variable bit rate that comprises high speed and low speed at least, and can close when not required.Under possible situation, close fan and reduced the energy use.Under maximum temperature, need high fan speed, with ventilation and the cooling level that requirement is provided.Needing lower fan speed At All Other Times.This system can be computer-controlled, to guarantee having sufficient ventilation and cooling when minimization of energy is used.

As shown in Figure 3, each fan has blower-casting 17, and this blower-casting defines the pipeline that the end panel 17A from be installed in wall 101 extends.Plate and pipeline are formed for circle or the rectangular channel that air is overflowed from wall opening.Fan 18 with motor 18A and fan blade 18B is installed in the pipeline of blower-casting, air outwards is driven into the open end 17C of blower-casting 17 from wall opening.Thereby open end 17C forms from wall 101 outside isolated openings.

Thereby blower-casting defines the entrance opening 17D that is positioned at the wall place and the outlet conduit 17 that extends to the exit opening 17C in the wall outside by wall.

Damper board component 120 is installed on the blower-casting, this damper board component comprises installing plate or the sheet material 12 with opening 12A and flange 12B, air passes this opening, and this flange is around this opening and define top flange 12C, base flange 12B and lateral flanges.The connecting portion that flexible rubber seal or silicon 10 allow between sealing blower-casting 17 and the installing plate 12.

For the air door baffle plate 1 of foamed polystyrene or similar sheet material form is coated with plastic sheet on each surface, and plastic sheet covers the edge.Sheet material or baffle plate 1 suspend by articulated section 16 in the upper edge that engages with top flange 12C.Sheet material 1 can pivot around its top edge, to hang from the articulated section under the gravity effect.Therefore, sheet material 1 can extend in closing position and crosses opening 12A, wherein neighboring

part

1A, 1B, 1C and 1D(Fig. 4 of air door baffle plate) engage with

flange

12B, 12C around opening 12A.

Air door baffle plate 1 under the pressure that comes from the stream of the air forward 18F that is produced by fan 18 by 16 pivoting and leave

flange

12B, 12C and can move to open position in the articulated section, as shown in Figure 3.

Resilience deformable fin seal part 2 is arranged on

peripheral part

1A, 1B, 1C and the 1D, to act between the neighboring of air door baffle plate part and flange.The seal centers on opening 12A, and is arranged to seal the air door baffle plate, passes through the reverse flow 18R of blower-casting to prevent air.

The seal comprises deformable fin 2A(Fig. 6), this deformable fin can easily be depressed, and can be in coming from building provides effective sealing under the low back pressure effect of air negative pressure.

Installing plate 12 comprises top covering 13, this top covering 16 stretches out from the articulated section in the over top of air door baffle plate 1, and installing plate 12 comprises the flange 14 under turning to, flange under this turns to has bottom margin 14A, to engage air door baffle plate 1 and to prevent that the pivoting action of air door baffle plate 1 from surpassing predetermined angular.Covering 13 can also comprise side plate 11, and this side plate prevents that air from engaging the sidepiece of baffle plate 1.

In operation, baffle plate stays open by the high-speed air flow along forward direction 18F from fan 18.Closing under the situation of fan when not needing air stream, baffle plate is closed under the gravity effect, seals up to its fish plate 12.In this case, the back pressure on the baffle plate remains closed it, seals to form, thereby prevents that any contaminated air is back in the building.This in 1 year some the time be even more important, for example outdoor temperature is not enough high and need autumn or the spring of high fan flow, and causes with the humid air and slow down moving and when causing high-caliber pollution when minimum the ventilation.

In order to keep baffle plate slightly to open to drive than low rate when being used for less air movement at fan, be provided with abutting member 7, with butt bottom margin part 1C, thereby keep the air door baffle plate to be in the position of opening slightly.Abutting member 7(Fig. 6) comprise pin 7A, this pin can be withdrawn at solenoid 7B, and allowing the damper plate closing, this solenoid is below the blower-casting 17, be installed on the plate 6 in the back of plate 12.Thereby this pin can be electrically operated by remote control, allows closure to withdraw fully, and regulate and as required air mass flow is set the opening that needs.

In order to increase clossing pressure with the make-up air back pressure, be provided with the magnet breech lock, to be provided for that the air door baffle plate is remained on closing force in the closing position.This can comprise the magnetic stripe 20(Fig. 7 around the periphery of air door baffle plate), this magnetic stripe cooperates with bonding jumper 21 on the installing plate 12.

Perhaps, the magnet breech lock comprises magnet 3(Fig. 7), this magnet is carried on the gripper shoe 4 at the bottom margin place that is positioned at the air door baffle plate, and cooperates with metallic plate 5 on the installing plate 12.

Can be provided with heating wire rod 8, with heated sealant spare, thereby prevent freezing.

Articulated section 16(Fig. 3) be flexible band, this flexibility band crosses the top of baffle plate 1, extends to installing plate 12 from air door baffle plate 1, and is installed on the gasket strip 15 at installing plate 12 places.Can use the articulated section of other type.

In some cases, typical extra shutter closure member 19 remains on the wall opening place, thereby provides inner closed when fan cuts out.

Said structure comprises the blower-casting with external pipe, and this external pipe stretches out from wall, and the damper board component is installed on the outer end of pipeline.

In Fig. 8, show the similar cross-sectional view with Fig. 3, show the fan structure of modification, its damper board component is located in the entrance end at wall opening everywhere.In this case, this device is positioned at the place ahead of shutter 19, and this shutter can remove or can be held in place.Except this modification, this structure is identical with above-mentioned structure.In Fig. 8, the air door baffle plate will can not limit the wind effect under the low speed, and reason is its upstream that is installed in fan.Thereby in this case, target only is to stop the air of contaminated reverse flow to reflux.Thereby, do not need the solenoid meeting device.Can be provided with solenoid, to open baffle plate at baffle plate when freezing and limited and/or when fan moves with minimum speed, to keep minimum aperture.Can be that the pipeline 22 of rectangle or circle is between air door baffle plate and fan entrance.This pipeline suitably is fixed to wall.

In Fig. 9, show the similar cross-sectional view with Fig. 3, show the fan structure of another modification, it does not have pipeline, thus its damper board component is directly installed on the outer surface of wall.In this structure, at fan 18B place, be provided with silk screen 18D at inner surface, as protective cover and fan Venturi tube 18G.In this structure, shutter 23 is installed on the outside of wall, and the case of shutter is inserted in the wall.The pipeline 24 of end can also be provided between wall and air door baffle plate.Except this modification, this structure is identical with above-mentioned structure.

In Figure 10, show the structure with two row baffle plates 120.This structure can be used for for example 36 inches fan.The air door baffle plate can be installed in inboard or the outside of building, as mentioned above.In some structure, also may exist more than two row and more than a baffle plate that is listed as, for example for 55 inches fan.

Forward Figure 11 to 17 now to, increased following additional element:

Label 32 is the circular antelabium that extends, and wherein baffle plate closes on the edge at this circle extension antelabium place.

Label 33 is bar or flat rod, and the one end is attached to the articulated section, and the other end is attached to its centre, makes baffle plate closely close on the edge of circular extension antelabium 32.In Figure 13, should be noted that bar 33 or engagement member act on circular air door its centre along its centre line, with the periphery edge of balanced air door baffle plate or the power on a plurality of edge.

Label 34 is heating cables, and it is installed on the periphery of baffle plate and/or is installed on the circular periphery that extends antelabium, in case stagnant ice freezes, and this heating cables is optional.

Label 35 is the stainless steel articulated section.

Label 36 is cover or covering as the choke device.This component protection air door baffle plate opposing sleet, and the nozzle or the opening that provide air to overflow resist simultaneously that wind overcomes baffle plate and the backflow carried out.The cover shown in 36 has among Figure 11 and 13: horizontal top wall 36A, and its over top in air door baffle plate and articulated section thereof is extended forward; And the anterior lip 36B under turning to, its front edges from wall 36A extends to bottom margin 36C along the air door baffle plate downwards and forward.The width of cover is wideer slightly than the width of fan and baffle plate, thereby holds this baffle plate, and cover defines sidewall 36D and 36E.As shown in figure 12, the anterior lip 36B under turning to extends abreast with the air door baffle plate that is in a fully open position, and the bottom margin 36C of its flange is in or surpasses the bottom margin 30A of air door baffle plate 30, thereby whole baffle plate is contained in the cover.Cover also has: diapire 36F, and it extends forward from installing plate; And the anterior lip under turning to 49, its front edges from wall 36F is extended downwards and forward.Be provided with deflector, with the strong oppositely guard shield of wind that creates antagonism, and reduce or prevent from drag on the wall of canopy being known that drag is that the major reason of rest fungus is gone up in the metal sheet outside that causes Stable.The purpose of this part is to make air movement leave building when air when fan is discharged.In addition, hood side, roof and diapire are connected, and to form nozzle, the mouth 36G from nozzle outwards and downwards guides with air, and this mouth is in preceding and prone clinoplain.

Label 37 shown in the enlarged drawing of Figure 12 and Figure 14 is the spring voltage biasing structure, and this spring voltage biasing structure helps to control the open and close of baffle plate.The spring voltage biasing structure is arranged to apply power to the damper plate.Spring voltage biasing structure 37 comprises lobe plate 42, and this lobe plate is installed on the pin 40 that is carried on the housing pivotally.Lobe plate 42 has cam face 42A, and this cam face engages with cam follower roller 39.Spring 43 applies spring force to cam so that cam around pin 40 along direction rotation up or down, and apply power from cam face 42A to cam follower roller 39.Cam follower roller 39 is attached to baffle plate 30 by lever 38, so that 35 places apply power by bar 33 to baffle plate in the articulated section.

In Figure 14, the shape of cam face 42A forms the power that control is applied to roller 39, and control is applied to the power of baffle plate thus.In this embodiment, surperficial 42A comprises the 42B of peak portion, and this peak portion is in along the position halfway on the surface between the left hand end 46 of the left-hand side end 48 at place, fully open position and complete closed position.Like this, as shown in the figure, the left side in peak portion, with the surface under roller makes progress the effect of spring force of spring 43 of bias voltage, roller 39 will move towards the left side.Symmetrically, the right side in peak portion, roller 39 will move towards the right side.Thereby the spring voltage biasing structure is arranged to, and on the right side that partially opens the position at peak portion 42B place the air door baffle plate is biased in the complete closing position, and at the opposite side that partially opens the position air door baffle plate is biased in the fully open position.

One end of spring is attached to chain 43, and this chain is connected to the hole 41 in the housing.The other end of spring is attached to screw 45, perhaps is attached to other attaching parts that spring are attached to the air door housing.

This mechanism allows when baffle plate is closed inside pressure to be applied on the baffle plate, thereby when fan shuts down, baffle plate is closed and maintenance closure closely closely.Can regulate pressure by regulating spring pressure.When fan is in minimum speed following time, this mechanism will keep baffle plate to be in minimum aperture, to reduce because the inside pressure drop that strong oppositely wind-force or baffle plate own wt cause.When fan moves with maximal rate, this mechanism will help to stay open baffle plate, and reduce pressure drop to improve the performance of fan.Can regulating spring tension force, with the baffle plate pressure on the edge of regulating the antelabium edge.

In the position 46 of roller 39, bias mechanism applies inside power at baffle plate, so that its tight closure.

Except the 42B of peak portion, surperficial 42A comprises the protruding section 42C that is between position 47 and the end position 46.In the position 47 of roller 39, voltage biasing structure is by bossing 42C effect, applying outside slightly power at baffle plate, thereby when fan moves with minimum speed, keep it to open with minimum aperture, to reduce because the pressure drop on the fan that strong oppositely wind-force or baffle plate own wt cause.

In the position 48 of roller 39, voltage biasing structure applies outside power at baffle plate, open in order to when fan moves with maximal rate, baffle plate remained fully, thereby reduce because the pressure drop on the fan that the baffle plate own wt causes, and the performance of maximization fan.

In addition, it is optional to figure 14 illustrates solenoid 50(), it is operated in response to the actuating of fan, is positioned to directly apply outside power to lever 38 when lever is in the position 46.Thereby when starting fan, solenoid 50 is applied thrust on lever 38, to keep the minimum aperture of baffle plate as required.When fan stopped, solenoid was also stopped using, and is withdrawn into its initial position, so that the baffle plate closure.Solenoid does not apply any power that makes the baffle plate closure at baffle plate.Solenoid can also part 7,7A and 7B place be installed in as shown in Figure 6 before structure in.

In addition, figure 15 illustrates the solenoid of operating in the mode identical with solenoid 50 51.Yet in this case, solenoid is positioned at the place, end of spring 44, to apply the power of increase at spring 44.When fan was out of service, this can be used for applying inside pressure at baffle plate, with the air-tightness of maximization baffle plate.When starting fan, solenoid outwards moves, and reducing spring force, and reduces the pressure on the baffle plate when fan moves with maximal rate, thereby avoids reducing the performance of fan or the air-flow of

fan.Solenoid

50 and 51 can be installed on the device in many ways, with closed baffle plate securely, thereby allows minimum aperture and help when fan is in maximal rate to keep baffle plate to open fully.

Thereby, as mentioned above, but being provided with operating means,

solenoid

50 or 51 for example applying extra power to the spring voltage biasing structure, thereby increases power when needed.But should operating means depend on the operation of fan, thus its when starting fan, operate, and use electric power from fan operation.Cam face 42A is included in the recess that partially opens 47 places, position, thereby applies spring force to the damper plate, partially opens in the position to be tending towards the air door baffle plate remained on.Yet, to the right or extra power left will overcome the constraint of this part, and allow baffle plate to move to as required to open fully and closing position fully.

Solenoid can be installed in many ways, and can replace with simply and can regulate pin, and this pin can manually or automatically be opened or closed with variable adjusting.

Forward Figure 16 now to, it shows alternative structure of spring voltage biasing structure, illustrates with 53, and its cam 53A has surperficial 53B, and this surface is straight, thus described peak portion before having omitted.Yet this structure is also operated by the geometry of system, in a side that partially opens the position air door baffle plate is biased in the closing position, at the opposite side that partially opens the position air door baffle plate is biased in the fully open position.This is achieved in that as cam face 53B and is in level and lever 38 is in when vertical that cam roller 53C has top dead center position.In this left side, position, roller moves towards the left side.On this right side, position, roller moves towards the right side.

Forward Figure 17 now to, it shows the another kind of optional embodiment that applies spring force to baffle plate, make in a side that partially opens the position air door baffle plate to be biased in the tight closure position, at the opposite side that partially opens the position air door baffle plate is biased in the fully open position.In this structure 60, have two lever 60A and 60B, an end of two levers is pivotally connected to each other at pin 60C place, and the other end of lever 60B is connected to housing, and the other end of lever 60A is connected to baffle plate.Spring 60D applies spring force to lever construction.In addition, spring and lever structure also have top dead center position, spring 60D applies outside power in a side upper edge of this position towards a direction of open position, and applies inside power in the opposite side upper edge of this position another direction towards the tight closure position.

Main herein vital point is as follows:

This device both had been used for closely closed baffle plate, also was used for applying outside power staying open the position, thereby reduced or avoid pressure drop, and kept or improve fan air stream or performance.

This device is used for exerting pressure in its centre, with equalization of pressure be applied on the perimeter, even occur at the edge under the situation of the micro-strain do not expect.

Inside and outside power can be regulated.

Cam can have different shapes or design, so that the purpose of this mechanism's adaptive expectation.

This device can be used for fan, pipeline, the entrance and exit of any kind.

For air-tightness, it is important using correct sealing.

Butt engages baffle plate (regracting or not regracting) (being automatic automatically or not) (being used for air filter unit or non-air filter plant) and will allow baffle plate to keep certain minimum baffle opening, even in order to also can control minimum rate of venting under by force reverse wind conditions.

Cover is designed to avoid air stream directly to arrive on the building, and makes air away from building.

This system is used for air filtration and non-air filter plant (departments such as agricultural, industry).

This system can be installed in the outside or the inboard of building.

Compare with conventional shutter, increase the air-tightness of baffle plate simultaneously by reducing pressure drop, this device provides the fan performance of raising.

This structure has been considered four reasons, thereby always keeps air-tightness and do not have freezing problem in cold season.

Forward Figure 18,19 and 20 now to, it shows alternative structure of cylindrical housings 70 and circular discoid baffle component 71, this cylindrical housings is installed on the blower-casting, the circular discoid baffle component moves pivotally between open position and closing position, as shown in the figure, the circular discoid baffle component is at the edge 72 of closing position against housing 70.

Therefore, the damper board component comprises the installing plate that is limited by housing, and this installing plate has opening and flange 72, and air passes this opening, and this flange is around this opening.In the figure, not shown installing plate only shows and is about 4 inches dark flanges.The degree of depth of flange will change according to its mounted fan housing.For example, if the neighboring of blower-casting tilts very much, need to have bigger flange so with its covering.Then, this flange is installed on the installing plate (convenient and not shown in order to illustrate).The circular air door baffle plate 71 of An Zhuaning is arranged to extend in closing position when fan does not move and crosses this opening pivotally, and wherein the outer peripheral edge part 73 of air door baffle plate 71 engages with the flange 72 that centers on opening.Air door baffle plate 71 forms flat circular discs, and has the front surface 74 that deviates from fan forward and towards the rear surface 75 of fan.Air door baffle plate 71 forms flat circular discs, but can be designed to other shape and structure as required.

The air door baffle plate suspends by the articulated element 76 adjacent with the top edge 77 of air door baffle plate 71, and pivots around the hinge axes 78 of articulated element.Articulated element 76 is included in the horizontal support piece 79 at hinge axes place and near two support arms 80 that on top extend from horizontal support piece 79 edge 77 and 81.Arm is arranged in the spaced positions place symmetrically on the respective side of vertical centre line C L 2.Arm comprises first horizontal component 80A and the 81A, at the air door baffle plate forward on the direction of the position in the place ahead of air door baffle plate.Arm also comprises vertical foil portion 80A and 80B, and the position below the top 77 of air door baffle plate 71 is connected to the front surface 74 of air door baffle plate 71 to each foil portion by connecting

elements

80C and 81C.

Connecting elements

80C and 81C are arranged near the cross central line CL1 that is in the air door baffle plate or the position of below, and only be connected to air door baffle plate 71 at described connecting elements place, with the top 77 that allows the air door baffle plate and bottom margin 77A with respect to the connecting elements deflection, and thus with respect to the arm deflection.

Thereby foil portion 80B and 81B extend along the front surface 74 of baffle component 71, and spaced apart with front surface 74, move in order to be independent of front surface when the deflection action appears in baffle component.

Connecting elements

80C and 81C are formed by the carriage on the front surface 74 that is fastened to baffle component 71, and each comprises bar foil portion 80B and 81B, and bar is bonded in the horizontal flanges of carriage by hole 80D, 81D.

Shown in Figure 18 and 19, horizontal support piece 79 is arranged in vertical plane VP(Figure 18) the position and be positioned at the height place of top 77 tops of baffle component, this vertical plane is in the back of the rear surface 75 of baffle component 71.

Two

arms

80 and 81 are installed on two

independent parts

79A and 79B of horizontal support piece 79, make arm to pivot independently.Just, parts 79A is supported between outer supporting walls 76A and the intermediate supports wall 76B, and parts 79B is supported between outer supporting walls 76D and the intermediate supports wall 76E.All supporting walls are all from top plate 76C suspention, and the formation rigid frame structure, and cross member 79 pivots from this rigid frame structure.Though framework 76 keeps the fixed position on online 78 to locate cross member 79, the space between wall 76B and the 76E allows

parts

79A and 79B to be pivoted relative to each other or rotates, to allow the baffle component deflection.

Baffle component can be used for not having the situation of spring bias voltage, thereby baffle component is closed under the gravity effect.Yet, in some structure, be provided with spring voltage biasing structure 90, this spring voltage biasing structure by two

springs

93 and 94 by

lever

91 and 92 along applying biasing force towards open position with towards the both direction of closing position to arm 80 and 81.Spring is to arrange with aforementioned similar mode, so that

lever

91,92 had

central action.Spring

93 and 94 can be regulated independently, in order to provide different power to the damper plate, makes independent regulation provide the difference of biasing force to change.Spring 93 is arranged on the side of articulated element, and spring 94 is arranged on the opposite side of articulated element.

In Figure 21, show identical baffle component and housing, but be to use the spring structure 176 of modification, this spring structure comprises two springs in the cam of aforementioned structure and cam follower 177.

In Figure 22, show identical baffle component and housing, but be to use the spring structure 180 of modification, this spring structure comprises single spring and two levers.Thereby baffle plate 71 is on aforementioned arm, at lateral shaft 181 pivots.By obtaining the control of axle 181 rotation with second gear, 185 meshed gears 184.By a pair of lever 182 with 183 and the spring 186 that is connected lever come control gear around the rotation of its corresponding axis.Thereby, shown in open position in, lever is by spring 186 bias voltages, makes to be carried on lever 182 on the axle 181 and baffle plate 71 along the direction rotation towards open position.When baffle plate since air flow down and fall and when closed, make

lever

182 and 183 along the direction rotation that separates, the maximum length position when lever 183 is in 6.00 positions in order to make spring be stretched over that lever 182 is in 12.00 positions.After this position, lever moves past the center, and spring pulls to them together, and lever 182 is rotated in a clockwise direction, thereby baffle plate 71 is biased in the closing position of flange 72.

Thereby the spring voltage biasing structure comprises first lever 182 that is connected with axle 181 and acts on the lever 182 so that the spring 186 that axle 181 pivots.Meshing gear 184,185 connects first and second levers, so that along with axle pivots and associated movement in opposite direction.Spring 186 is connected between two

levers

182 and 183, and when rotating, passed through by lever center OC, thereby at side upper edge first direction D1 bias voltage first lever 182 of crossing the center, and at opposite side upper edge second direction D2 bias voltage first lever 182 of crossing the center.

Because in above invention as herein described, can carry out various modifications, and in spirit and scope in claim without departing from the spirit and scope of the present invention, can have many obviously different embodiment broadly, therefore, it only is illustrative rather than restrictive being included in that all themes in the appended specification all should be interpreted as.

Claims

1. a damper board component is used for Stable, and wherein this Stable comprises:

Housing region;

Each fan structure comprises:

Blower-casting;

Fan, it is installed in the blower-casting;

2. fan structure according to claim 1, wherein the seal is carried on the neighboring part of air door baffle plate.

3. fan structure according to claim 1 and 2, wherein the seal comprises the deformable fin.

4. according to each described fan structure in the aforementioned claim, wherein installing plate comprises the top covering, and this top covering extends from the articulated section in the over top of air door baffle plate.

5. fan structure according to claim 4, wherein the top covering has the flange under turning to, to engage the air door baffle plate and to prevent that the pivoting action of air door baffle plate from surpassing predetermined angular.

6. according to each described fan structure in the aforementioned claim, wherein be provided with abutting member, when fan during with low-speed running, the opposite wind-force of this abutting member opposing remains on the air door baffle plate in the position of opening slightly.

7. according to each described fan structure in the aforementioned claim, wherein abutting member can be withdrawn, to allow closed air door baffle plate.

8. fan structure according to claim 6, wherein abutting member can be operated by remote control.

9. fan structure according to claim 1 wherein is provided with breech lock, and this breech lock is provided for the air door baffle plate is remained on closing force in the closing position.

10. fan structure according to claim 9, wherein breech lock comprises around the magnetic stripe of the periphery of air door baffle plate and/or at the magnet at the place, bottom of baffle plate.

11. according to each described fan structure in the aforementioned claim, wherein the air door baffle plate comprises the flat panel that can be completely cut off.

12. according to each described fan structure in the aforementioned claim, wherein the damper board component is installed on the outboard end of blower-casting.

13. according to each described fan structure in the aforementioned claim, wherein blower-casting has extra shutter closure member.

14. according to each described fan structure in the aforementioned claim, wherein the damper board component is installed on the blower-casting at the inner end place.

15. according to each described fan structure in the aforementioned claim, wherein be provided with the heating wire rod, this heating wire rod is used for the heating seal in case stagnant ice freezes.

16. according to each described fan structure in the aforementioned claim, wherein air intake is arranged in the ceiling place and/or wall of housing region, is communicated with the roof space of housing region top.

17. fan structure according to claim 16, wherein each air intake comprises the filter assemblies that is carried in the roof space.

18. according to each described fan structure in the aforementioned claim, wherein, except entrance and scavenger fan, housing region is sealed and air that do not allow to contain pathogen enters.

19. a fan structure, it comprises:

Blower-casting;

Fan, it is installed in the blower-casting;

This fan can be with high speed and low-speed handing;

20. fan structure according to claim 19, wherein abutting member can be withdrawn, to allow closed air door baffle plate.

21. fan structure according to claim 20, wherein abutting member can be operated by remote control.

22. a damper board component, it is used for being installed in fan structure, and this fan structure has blower-casting and the fan that is installed in the blower-casting;

This damper board component comprises:

23. damper board component according to claim 22, wherein the air door baffle plate is suspended at upper edge by the articulated section, and pivots around this top edge.

24. according to claim 22 or 23 described damper board components, wherein be provided with resilience deformable seal part, it is between the neighboring part and flange of air door baffle plate, is arranged to sealing air door baffle plate when fan does not move, to prevent that air is by the reverse flow of blower-casting.

25. according to each described damper board component in the claim 22 to 24, wherein voltage biasing structure comprises be used to the spring that spring force is provided.

26. damper board component according to claim 25, wherein voltage biasing structure comprises the cam face that engages with cam follower, and its medi-spring applies spring force between cam follower and cam face.

27. damper board component according to claim 26, wherein cam follower is attached to the air door baffle plate.

28. damper board component according to claim 27, wherein cam follower is installed on the lever, and this lever is attached to the air door baffle plate to move pivotally with this air door baffle plate.

29. damper board component according to claim 27, wherein cam face is installed pivotally, and spring is arranged to make cam face to pivot along the direction that applies power to cam follower.

30. according to each described damper board component in the claim 22 to 29, but wherein be provided with operating means, but should be used for applying extra power to voltage biasing structure by operating means, with increase power.

31. damper board component according to claim 30, but wherein be somebody's turn to do the operation that operating means depends on fan.

32. damper board component according to claim 29, wherein cam face is included in the recess that partially opens the position, thereby apply power to the damper plate when moving when the strong reverse wind-force of fan opposing and with minimum speed, partially open in the position to be tending towards the air door baffle plate remained on.

33. according to each described damper board component in the claim 22 to 32, apply power to the damper plate when wherein voltage biasing structure is arranged to move when the strong reverse wind-force of fan opposing and with minimum speed, partially open in the position to be tending towards the air door baffle plate remained on.

34. according to each described damper board component in the claim 22 to 33, wherein installing plate comprises cover, anterior lip under this cover has roof and turns to, this roof extends in the over top of air door baffle plate, anterior lip under this turns to down and is onwards extended along the air door baffle plate, air is pushed away the wall of building.

35. damper board component according to claim 34, the anterior lip under wherein turning to be in a fully open position in the air door baffle plate extend abreast.

36. damper board component according to claim 35, the anterior lip under wherein turning to are at the bottom margin place of air door baffle plate or surpass the bottom margin of air door baffle plate and extend to the bottom margin of flange.

37. according to each described damper board component in the claim 22 to 36, wherein installing plate comprises cover, this cover have diapire and and turn under anterior lip, this diapire extends forward from installing plate, anterior lip under this turns to down and is onwards extended, air is pushed away the wall of building.

38. according to each described damper board component in the claim 22 to 37, wherein be provided with abutting member, when fan during with low-speed running, the opposite wind-force of this abutting member opposing remains on the air door baffle plate in the position of opening slightly.

39. according to the described damper board component of claim 38, wherein abutting member can be withdrawn, to allow closed air door baffle plate.

40. according to each described damper board component in the claim 22 to 39, wherein voltage biasing structure comprises engagement member, this engagement member acts on the central authorities of air door baffle plate along its centre line, with the power on the edge of balanced air door baffle plate.

41. a damper board component, it is used for being installed in fan structure, and this fan structure has blower-casting and the fan that is installed in the blower-casting;

This damper board component comprises:

42. according to the described damper board component of claim 41, the anterior lip under wherein turning to be in a fully open position in the air door baffle plate extend abreast.

43. according to claim 41 or 42 described damper board components, the anterior lip under wherein turning to is at the bottom margin place of air door baffle plate or surpass the bottom margin of air door baffle plate and extend to the bottom margin of flange.

44. according to each described damper board component in the claim 41 to 43, wherein cover have diapire and and turn under anterior lip, this diapire extends forward from installing plate, and the anterior lip under this turns to down and is onwards extended, air is pushed away the wall of building.

45. a damper board component, it is used for being installed in fan structure, and this fan structure has blower-casting and the fan that is installed in the blower-casting;

This damper board component comprises:

46. according to the described damper board component of claim 45, wherein said connecting elements is arranged near the cross central line of air door baffle plate or the position of below.

47. according to claim 45 or 46 described damper board components, described at least one arm only is connected to the air door baffle plate at described connecting elements place, with the top that allows the air door baffle plate and bottom margin with respect to described connecting elements deflection.

48. according to each described damper board component in the claim 45 to 47, wherein said at least one support arm comprises foil portion, this foil portion extends and spaced apart with the front surface of baffle component along the front surface of baffle component.

49. according to each described damper board component in the claim 45 to 48, wherein be provided with at least one carriage, described at least one carriage is fastened to the front surface of baffle component, and the described foil portion of described at least one support arm engages with this carriage.

50. according to each described damper board component in the claim 45 to 49, wherein foil portion comprises bar, and the hole of this bar by carriage engages.

51. according to each described damper board component in the claim 45 to 50, wherein horizontal support piece is positioned at the position in the vertical plane, this vertical plane is in the back of the rear surface of baffle component.

52. according to each described damper board component in the claim 45 to 51, wherein horizontal support piece is positioned at the height place of the top top of baffle component.

53. according to each described damper board component in the claim 45 to 52, wherein baffle component only moves to closing position by the gravity effect.

54. according to each described damper board component in the claim 45 to 53, wherein be provided with the spring voltage biasing structure, this spring voltage biasing structure is along applying biasing force towards open position with towards the both direction of closing position to described at least one arm.

55. according to each described damper board component in the claim 45 to 54, its medi-spring voltage biasing structure comprises two springs can regulating independently.

56. according to the described damper board component of claim 55, wherein said two springs are arranged to provide different power to the damper plate, make independent regulation provide the difference of biasing force to change.

57. according to claim 55 or 56 described damper board components, a spring in wherein said two springs is arranged on the side of articulated element, another spring is arranged on the opposite side of articulated element.

58. according to each described damper board component in the claim 45 to 57, wherein said at least one arm comprises laterally isolated two arms, thereby each arm is positioned on the respective side of vertical center line of baffle component.

59. according to the described damper board component of claim 58, wherein said two arms are installed on two independent parts of horizontal support piece, make arm to pivot independently.

60. a damper board component, it is used for being installed in fan structure, and this fan structure has blower-casting and the fan that is installed in the blower-casting;

This damper board component comprises:

61. according to the described damper board component of claim 60, each in the wherein said arm is connected to the air door baffle plate by connecting elements, this connecting elements is arranged near the cross central line of air door baffle plate or the position of below.

62. according to claim 60 or 61 described damper board components, each front surface along baffle component of wherein said suspension arm extends and is spaced apart with the front surface of baffle component.

63. according to each described damper board component in the claim 60 to 62, wherein horizontal support piece is positioned at the position in the vertical plane, this vertical plane is in the back of the rear surface of baffle component.

64. according to each described damper board component in the claim 60 to 63, wherein said two arms are installed on two independent parts of horizontal support piece, make arm to pivot independently.

65. according to each described damper board component in the claim 60 to 64, wherein baffle component only moves to closing position by the gravity effect.

66. a damper board component, it is used for being installed in fan structure, and this fan structure has blower-casting and the fan that is installed in the blower-casting;

This damper board component comprises:

67. according to the described damper board component of claim 66, wherein said two springs are arranged to provide different power to the damper plate, make independent regulation provide the difference of biasing force to change.

68. according to claim 66 or 67 described damper board components, a spring in wherein said two springs is arranged on the side of articulated element, another spring is arranged on the opposite side of articulated element.

69. a damper board component, it is used for being installed in fan structure, and this fan structure has blower-casting and the fan that is installed in the blower-casting;

This damper board component comprises:

70. an assembly, it comprises:

Fan;

Blower-casting, it is used for the air in guiding fan downstream;

And according to each described damper board component in the aforementioned claim.

71. according to the described assembly of claim 70, wherein fan has variable speed motor, controls this variable speed motor by the frequency that changes power supply.

72. according to claim 70 or 71 described assemblys, wherein blower-casting comprises cone, the shape of this cone forms the air stream maximizing efficiency that makes the fan downstream, and the damper board component is installed on the rearward end of cone.