CN108286769A - A kind of interior sound-proof ventilation unit - Google Patents

Abstract

The invention discloses an indoor sound-proof ventilation device, which comprises a ventilation box body. A ventilation chamber is formed inside the ventilation box body. One side of the ventilation box body is provided with a ventilation port communicating with the ventilation chamber and used for indoor ventilation. There is a ventilation port communicating with the ventilation chamber and used for outdoor ventilation. The ventilation chamber is provided with a rotating shaft, which is used for transmission connection with the power mechanism. The blades used for ventilation are installed on the rotating shaft to form an impeller. The ventilation port and the direction of rotation of the impeller Correspondingly arranged, it is characterized in that the ventilation openings on the indoor side and the ventilation openings on the outdoor side are respectively provided with tuyere switch devices capable of controlling the opening and closing of the ventilation openings, and also include a switch control mechanism, the switch control mechanism is used for when the shaft rotates The tuyere switch devices for controlling the indoor air vents and the outdoor air vents are turned on and off in turn. The invention has the advantages of simple structure, good sound insulation and noise reduction effect, improved installation independence and application range, reduced energy consumption and the like.

Description

An indoor soundproof ventilation device

technical field

The invention relates to the technical field of building ventilation; in particular, it relates to an indoor soundproof ventilation device.

Background technique

For some communities and office buildings close to roads, expressways, and construction sites, due to the huge noise pollution, it seriously affects people's sleep quality and work efficiency. In order to reduce the impact of noise, people usually close the doors and windows very tightly. After a period of time, the indoor air quality is very bad, and people will feel chest tightness, dizziness, irritability and other problems.

In order to solve the above problems, it is conceivable to install a ventilation device in the building, but the conventional ventilation device still has the following defects: 1. When the ventilation device is used, it will directly connect the indoor and outdoor, causing the outdoor noise to be transmitted into the room through the air flow channel, so The sound insulation and noise reduction effect is poor. 2Many ventilators have electric motors, which increase the cost of use and the limitation of electricity consumption, and the operation of the motor itself will increase the indoor noise; resulting in poor noise reduction effect.

Contents of the invention

Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is: how to provide an indoor sound insulation and ventilation device with simple structure and good sound insulation and noise reduction effect, and further improve installation independence and application range, and reduce energy consumption.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

An indoor soundproof ventilation device, comprising a ventilation box, a ventilation chamber is formed inside the ventilation box, a ventilation opening communicated with the ventilation chamber and used for indoor ventilation is provided on one side of the ventilation box, and a ventilation opening is provided on the other side. The chambers communicate with each other and are used for ventilating vents on the outside of the outdoor. The ventilating chamber is provided with a rotating shaft, which is used for transmission connection with the power mechanism. Blades for ventilation are installed on the rotating shaft to form an impeller. It is characterized in that the ventilation opening on the indoor side and the ventilation opening on the outdoor side are respectively provided with a tuyere switch device capable of controlling the opening and closing of the ventilation opening, and also includes a switch control mechanism, which is used to control the indoor ventilation when the rotating shaft rotates. The tuyere switch devices of the air vent and the outdoor side vent are turned on and off in turn.

In this way, when the ventilation device is installed, the indoor side vents are located indoors, and the outdoor side vents are located outdoors. When it is in use, the rotating shaft is connected and installed to the power mechanism, the rotating shaft is driven to rotate by the power mechanism, and the wind is generated by the blades for ventilation. Its improvement is that the set switch control mechanism can be used to control the opening and closing of the air outlet switch devices of the indoor side vent and the outdoor side vent in turn, so that during the ventilation process, the air outlet switch of the indoor side vent and the outdoor side vent The device is opened and closed in turn, so that only one side of the tuyere switch device is always in the open state. Therefore, when ventilating, only the indoor side or the outdoor side of the ventilation box is always exchanging air with the ventilation chamber, so that the indoor and outdoor are not directly connected, so while maintaining ventilation, the outdoor noise is cut off through the air duct The path transmitted to the room can shield outdoor noise to the greatest extent. Greatly improved the sound insulation and noise reduction effect.

As an optimization, at least two vents on the indoor side are respectively arranged at both ends of the same side of the impeller, and at least two vents on the outdoor side are respectively arranged at both ends of the same side of the impeller.

In this way, when the indoor vent is opened, the rotation of the impeller can drive the air from one end of the indoor vent on the same side of the impeller to the other end; One end of the outdoor air vents at both ends enters the air and the other end exits the air. In this way, the air exchange efficiency between the ventilation chamber and the room and the room can be greatly improved.

As an optimization, the tuyere switch device includes a fixed switch plate and a movable switch plate arranged vertically to the indoor and outdoor directions, and the two ventilation openings corresponding to the two ends of the same side of the ventilation box are each provided with a fixed switch plate, and the fixed switch plate It is arranged directly opposite and the opposite outer end is fixed on the inner wall of the ventilation box. There is also a movable switch plate on the outward side between the two fixed switch plates at both ends of the same side of the ventilation box. The movable switch plate has a The part that overlaps with the fixed switch board can form a partition between the corresponding vent and the ventilation chamber after the two overlap. Closed members that fit together; the switch control mechanism includes an arc-shaped protrusion located in the middle of the inner side of the fixed switch plate and protruding outward toward the impeller, and a cam arranged on the impeller, and the outer side of the arc-shaped protrusion Located within the range of the rotation path circle of the cam, the maximum distance that the arc-shaped protrusion can extend into the rotation path circle of the cam is smaller than the maximum distance of the closing action range generated by the closing member.

In this way, when the impeller rotates, it relies on the blades to generate a rotating wind flow. When the cam does not pass through the arc-shaped convex position, the movable switch plate and the fixed switch plate at the inner end of the vent are closed by the action of the closing member. When the cam passes through the arc-shaped convex position On the top, through the contact interaction between the cam and the arc-shaped protrusion, the movable switch plate is pushed outwards. At this time, the two vents on the same side of the movable switch plate are opened for ventilation at the same time, because the two vents are located on the same side of the impeller. Therefore, under the action of the rotating air flow, one ventilator enters the air, and the other ventilator exits the air, completing the ventilation exchange between the ventilated box body and the outside of this side. Then after the cam turns out of the arc-shaped raised area, the movable switch plate and the fixed switch plate are closed again under the action of the closing member. When the cam rotates to the arc-shaped raised position on the other side, relying on the same principle to drive the two vents on this side to open, to realize the ventilation exchange between the ventilation box and the outside of this side, and finally realize the partitioned indoor and outdoor ventilation. Ventilation exchange. The tuyere switch device and switch control mechanism adopting this structure have the advantages of simpler structure and reliable and stable control.

As an optimization, the closing member is a ferromagnetic member that can be attracted to each other and is respectively provided on the opposite sides of the overlapped portion of the movable switch board and the fixed switch board. This has the advantages of simple structure and reliable closure. Of course, the closing member can also be a return spring arranged between the outside of the movable switch plate and the ventilation box.

Further, on the inner wall of the ventilation chamber in the direction opposite to the middle part of the outer side of the movable switch board, a limit partition is also fixedly arranged, and the distance between the inner end of the limit partition and the outer side of the movable switch board when the ferromagnetic member is in the state of attraction is less than The maximum distance of the attraction range produced by the ferromagnetic member is greater than or equal to the maximum distance that the arc-shaped protrusion can extend into the rotation path circle of the cam.

In this way, the mixing and offsetting of the two vents on the same side can be avoided, so that one air inlet and the other air outlet can be better formed, and the air exchange effect with the inside of the ventilation box can be improved.

Further, a spring is also arranged between the movable switch plate and the limiting partition or the inner side wall of the ventilation box where the limiting partition is located.

In this way, the spring can play the role of cushioning and reset, better improve running stability and reduce noise.

As another optimization, the tuyere switch device includes a fixed channel plate and a movable channel plate arranged along the indoor and outdoor directions and parallel to each other, the fixed channel plate is arranged on the side of the inner end of each vent near the middle direction, the movable channel plate is arranged On the other side, the movable channel plate is provided with a closing member that can fit the movable channel plate and the fixed channel plate and block the corresponding vents without external force; the switch control mechanism includes a The push rod provided on the channel plate, one end of the push rod slidably passes through the fixed channel plate and abuts against the movable channel plate, the other end of the push rod is provided with a wedge-shaped block, the wedge-shaped block has a slope facing the direction of the impeller, and the ventilation box The two wedge-shaped blocks at both ends of the same side of the body are symmetrically arranged and a thrust block is arranged between the two wedge-shaped blocks. A thrust block return spring is arranged between them, and an inclined surface matched with the inclined surface of the wedge-shaped block is respectively arranged on the left and right sides of the thrust block; the switch control mechanism also includes a cam arranged on the impeller, and the arc-shaped protruding The outer side is located within the circular range of the cam's rotation path. When the cam rotates, it works with the arc-shaped protrusion and drives the push rod to move.

In this way, when the impeller rotates, it relies on the blades to generate a rotating wind flow. When the cam does not pass through the arc-shaped protrusion, the movable channel plate and the fixed channel plate at the inner end of the vent are closed by the closing member. When the cam passes through the position of the arc-shaped protrusion, the thrust block is pushed out through the contact interaction between the cam and the arc-shaped protrusion, and through the cooperation of the inclined surface and the inclined surface, the push rods at both ends are pushed outward, and the two The movable channel plate corresponding to the vent is pushed outwards away from the fixed channel plate, so that a ventilation channel is formed between the two ventilation ports at both ends of the same side of the ventilation box and the ventilation chamber. In the tangential direction, under the action of the rotating air flow, one vent efficiently enters the air, and the other vent efficiently vents the air, completing the efficient ventilation exchange between the ventilated box and the outside of this side. Then after the cam turns out of the arc-shaped raised area, the movable channel plate and the fixed channel plate are closed again under the action of the closing member. When the cam rotates to the arc-shaped raised position on the other side, relying on the same principle to drive the two vents on this side to open, to realize the ventilation exchange between the ventilation box and the outside of this side, and finally realize the partitioned indoor and outdoor ventilation. Ventilation exchange. The tuyere switch device and switch control mechanism adopting this structure have the advantages of more efficient ventilation and reliable and stable control.

As an optimization, the closing member is a return spring of the movable channel plate provided between the side of the movable channel plate away from the fixed channel plate and the inner wall of the corresponding ventilation box.

In this way, it has the advantages of simple structure, reliable closing and reset. Of course, during implementation, the closure member can also be obtained by arranging a ferromagnetic attraction member between the movable channel plate and the fixed channel plate.

As an optimization, a flexible folding baffle is provided between the end of the movable channel plate on the side away from the fixed channel plate and close to the direction of the impeller and the corresponding inner wall of the ventilation box.

In this way, the wind flow can be better shielded, and the vents are only opened for ventilation through the movable channel plate when needed.

As an optimization, the ventilated box is a rectangular body, and the inner cavity wall is provided with sound-absorbing materials. This can better facilitate installation and improve the noise reduction effect.

As an optimization, the ventilation opening on one side of the ventilation box is provided with a primary filter and this side constitutes the indoor side, and the ventilation opening on the other side of the ventilation box is provided with rain-proof louvers and this side constitutes the outdoor side.

This way, there is better filtration and protection from rain.

As an optimization, the power mechanism includes a wind wheel, and one end of the rotating shaft rotatably extends out of the ventilation box and is connected with the wind wheel.

In this way, when the ventilation device is installed, the wind wheel can be stretched out and installed outside the wall, receiving the outdoor wind as power, producing the effect of automatic ventilation, canceling the dependence on the power supply, improving the installation independence and application range, and reducing energy consumption. loss.

Beneficial effects: the soundproof and ventilating device for unpowered windows of the present invention can ventilate, has no power requirement and has good soundproof effect; the device is low in cost, simple in structure, convenient to manufacture and maintain; It can take away the pollutants released by building materials.

In summary, the present invention has the advantages of simple structure, good sound insulation and noise reduction effect, improved installation independence and application range, and reduced energy consumption.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the ventilation box part in the first embodiment of the present invention.

Fig. 2 is a schematic structural view of a separate power mechanism part in the first embodiment of the present invention.

Fig. 3 is a schematic diagram of the structure of the ventilation box part in the second embodiment of the present invention.

Arrows in the accompanying drawings indicate the direction of wind flow.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings.

Embodiment 1: Refer to Fig. 1-2, a kind of indoor sound insulation and ventilation device, including a ventilation box 1, a ventilation chamber is formed inside the ventilation box 1, and a ventilation chamber is provided on one side of the ventilation box 1 to communicate with the ventilation chamber and used for indoor The ventilation opening for side ventilation, the other side is provided with the ventilation opening communicating with the ventilation chamber and used for outdoor ventilation, the ventilation chamber is provided with a rotating shaft 2, which is used for transmission connection with the power mechanism, and the rotating shaft 2 is installed for The blades of the ventilation form the impeller 3, and the ventilation opening and the rotation direction of the impeller 3 are arranged correspondingly, wherein the ventilation opening on the indoor side and the ventilation opening on the outdoor side are respectively provided with a tuyere switch device capable of controlling the opening and closing of the ventilation opening, and a switch control mechanism is also included , the switch control mechanism is used to control the opening and closing of the air outlet switch devices of the indoor air vent and the outdoor air vent in turn when the rotating shaft 2 rotates.

In this way, when the ventilation device is installed, the indoor side vents are located indoors, and the outdoor side vents are located outdoors. When it is in use, the rotating shaft is connected and installed to the power mechanism, the rotating shaft is driven to rotate by the power mechanism, and the wind is generated by the blades for ventilation. Its improvement is that the set switch control mechanism can be used to control the opening and closing of the air outlet switch devices of the indoor side vent and the outdoor side vent in turn, so that during the ventilation process, the air outlet switch of the indoor side vent and the outdoor side vent The device is opened and closed in turn, so that only one side of the tuyere switch device is always in the open state. Therefore, when ventilating, only the indoor side or the outdoor side of the ventilation box is always exchanging air with the ventilation chamber, so that the indoor and outdoor are not directly connected, so while maintaining ventilation, the outdoor noise is cut off through the air duct The path transmitted to the room can shield outdoor noise to the greatest extent. Greatly improved the sound insulation and noise reduction effect.

Wherein, the vents on the indoor side are at least two respectively arranged at both ends of the same side of the impeller 3 , and the vents on the outdoor side are at least two respectively arranged at both ends of the same side of the impeller 3 .

In this way, when the indoor vent is opened, the rotation of the impeller can drive the air from one end of the indoor vent on the same side of the impeller to the other end; One end of the outdoor air vents at both ends enters the air and the other end exits the air. In this way, the air exchange efficiency between the ventilation chamber and the room and the room can be greatly improved.

Wherein, the tuyere switch device includes a fixed switch plate 4 and a movable switch plate 5 arranged vertically to the indoor and outdoor directions, and one piece of the fixed switch plate 4 is arranged on each of the two vents corresponding to the two ends of the same side of the ventilation box. The switch plate 4 is arranged directly opposite and the opposite outer end is fixed on the inner wall of the ventilation box 1, and the outward side between the two fixed switch plates 4 on the same side of the ventilation box 1 is also provided with a movable switch plate 5 The movable switch plate 5 has a part that overlaps with the fixed switch plate 4 and enables the two to overlap to form a partition between the corresponding vent and the ventilation chamber. The closing member where the overlapping parts of the movable switch plate 5 and the fixed switch plate 4 are attached to each other; the switch control mechanism includes an arc-shaped protrusion 6 located in the middle of the inner side of the fixed switch plate and protruding outward toward the impeller, and also includes an arc-shaped protrusion 6 arranged on the impeller A cam 7, the outer side of the arc-shaped protrusion 6 is located within the range of the rotation path circle of the cam 7, and the maximum distance that the arc-shaped protrusion 6 can extend into the rotation path circle of the cam 7 is less than that produced by the closing member Closure range maximum distance.

In this way, when the impeller rotates, it relies on the blades to generate a rotating wind flow. When the cam does not pass through the arc-shaped convex position, the movable switch plate and the fixed switch plate at the inner end of the vent are closed by the action of the closing member. When the cam passes through the arc-shaped convex position On the top, through the contact interaction between the cam and the arc-shaped protrusion, the movable switch plate is pushed outwards. At this time, the two vents on the same side of the movable switch plate are opened for ventilation at the same time, because the two vents are located on the same side of the impeller. Therefore, under the action of the rotating air flow, one ventilator enters the air, and the other ventilator exits the air, completing the ventilation exchange between the ventilated box body and the outside of this side. Then after the cam turns out of the arc-shaped raised area, the movable switch plate and the fixed switch plate are closed again under the action of the closing member. When the cam rotates to the arc-shaped raised position on the other side, relying on the same principle to drive the two vents on this side to open, to realize the ventilation exchange between the ventilation box and the outside of this side, and finally realize the partitioned indoor and outdoor ventilation. Ventilation exchange. The tuyere switch device and switch control mechanism adopting this structure have the advantages of simpler structure and reliable and stable control.

Wherein, the closing member is a ferromagnetic member 8 that can be attracted to each other and is provided on opposite sides of the overlapped portion of the movable switch board and the fixed switch board. This has the advantages of simple structure and reliable closure. Of course, the closing member can also be a return spring arranged between the outside of the movable switch plate and the ventilation box.

Wherein, a spacer partition 9 is also fixedly arranged on the inner wall of the ventilating chamber in the direction opposite to the middle part of the outer side of the movable switch plate, and the distance between the inner end of the spacer partition 9 and the outer side of the movable switch plate when the ferromagnetic member is in the suction state is fixed. It is less than the maximum distance of the ferromagnetic component to generate the attraction effect range and greater than or equal to the maximum distance that the arc-shaped protrusion can extend into the rotation path circle of the cam.

In this way, the mixing and offsetting of the two vents on the same side can be avoided, so that one air inlet and the other air outlet can be better formed, and the air exchange effect with the inside of the ventilation box can be improved.

Wherein, a spring (not shown in the figure) is also arranged between the movable switch plate 5 and the limiting partition or the inner side wall of the ventilation box where the limiting partition is located.

In this way, the spring can play the role of cushioning and reset, better improve running stability and reduce noise.

Wherein, the ventilated box body 1 is a rectangular body, and a sound-absorbing material is arranged on the wall of the inner cavity. This can better facilitate installation and improve the noise reduction effect.

Wherein, the ventilation opening of one side of the ventilation box body 1 is provided with a primary filter 10 and this side constitutes the indoor side, and the ventilation opening of the other side of the ventilation box body is provided with rainproof louvers 11 and this side constitutes the outdoor side.

This way, there is better filtration and protection from rain.

Wherein, the power mechanism includes a wind wheel 12 , and one end of the rotating shaft 2 rotatably extends out of the ventilation box and is connected with the wind wheel 12 .

In this way, when the ventilation device is installed, the wind wheel can be stretched out and installed outside the wall, receiving the outdoor wind as power, producing the effect of automatic ventilation, canceling the dependence on the power supply, improving the installation independence and application range, and reducing energy consumption. loss.

Embodiment 2: see Fig. 3.

The difference between this embodiment and the above-mentioned embodiments is that the tuyere switch device and the switch control mechanism are different, and other structures are consistent with the above-mentioned embodiments. Specifically, in this embodiment, the tuyere switch device includes a The fixed channel plate 14 and the movable channel plate 15 parallel to each other, the fixed channel plate 14 is arranged on one side of the inner end of each vent near the middle direction, the movable channel plate 15 is arranged on the other side, and the movable channel plate 15 is provided with a Under the action of external force, the movable channel plate and the fixed channel plate can fit together and block the closing member of the corresponding vent; the switch control mechanism includes a push rod 16 arranged perpendicular to the fixed channel plate and the movable channel plate, one end of the push rod 16 can Slide through the fixed channel plate and abut against the movable channel plate. The other end of the push rod is provided with a wedge-shaped block 17. The wedge-shaped block 17 has a slope facing the direction of the impeller. Two wedge-shaped blocks at both ends of the same side of the ventilation box It is symmetrically arranged and a thrust block 18 is arranged between the two wedge blocks. The thrust block 18 has an arc-shaped protrusion facing the direction of the impeller, and a thrust block return spring is arranged between the direction of the thrust block away from the impeller and the inner cavity of the ventilation box. 19. The left and right sides of the thrust block are each provided with an inclined surface that matches the inclined surface of the wedge block; the switch control mechanism also includes a cam 20 arranged on the impeller, and the outer side of the arc-shaped protrusion is located on the side of the cam 20. Within the range of the rotation path circle, when the cam 20 rotates and acts on the arc-shaped protrusion and drives the push rod to move, the maximum distance is smaller than the maximum distance of the closing action range generated by the closing member.

In this way, when the impeller rotates, it relies on the blades to generate a rotating wind flow. When the cam does not pass through the arc-shaped protrusion, the movable channel plate and the fixed channel plate at the inner end of the vent are closed by the closing member. When the cam passes through the position of the arc-shaped protrusion, the thrust block is pushed out through the contact interaction between the cam and the arc-shaped protrusion, and through the cooperation of the inclined surface and the inclined surface, the push rods at both ends are pushed outward, and the two The movable channel plate corresponding to the vent is pushed outwards away from the fixed channel plate, so that a ventilation channel is formed between the two ventilation ports at both ends of the same side of the ventilation box and the ventilation chamber. In the tangential direction, under the action of the rotating air flow, one vent efficiently enters the air, and the other vent efficiently vents the air, completing the efficient ventilation exchange between the ventilated box and the outside of this side. Then after the cam turns out of the arc-shaped raised area, the movable channel plate and the fixed channel plate are closed again under the action of the closing member. When the cam rotates to the arc-shaped raised position on the other side, relying on the same principle to drive the two vents on this side to open, to realize the ventilation exchange between the ventilation box and the outside of this side, and finally realize the partitioned indoor and outdoor ventilation. Ventilation exchange. The tuyere switch device and switch control mechanism adopting this structure have the advantages of more efficient ventilation and reliable and stable control.

Wherein, the closing member is a movable channel plate return spring 21 provided between the side of the movable channel plate away from the fixed channel plate and the inner wall of the corresponding ventilation box.

In this way, it has the advantages of simple structure, reliable closing and reset. Of course, during implementation, the closure member can also be obtained by arranging a ferromagnetic attraction member between the movable channel plate and the fixed channel plate.

Wherein, a flexible folding baffle 22 is also provided between the end of the movable channel plate facing away from the fixed channel plate and the end close to the direction of the impeller and the corresponding inner wall of the ventilation box.

In this way, the wind flow can be better shielded, and the vents are only opened for ventilation through the movable channel plate when needed.

Claims (10)

1. a kind of interior sound-proof ventilation unit, including ventilation babinet, ventilation box house are formed with ventilated cavity, babinet one of divulging information Side is provided with the ventilation opening that indoor ventilation is communicated and be used for ventilated cavity, and the other side is provided with to communicate with ventilated cavity and be used in combination Shaft is provided in the ventilation opening of outside ventilation, ventilated cavity, shaft is used for and actuating unit is sequentially connected, and is pacified in shaft Impeller is formed equipped with the blade for ventilation, ventilation opening and wheel rotation direction are correspondingly arranged, which is characterized in that the indoor Ventilation opening and outside ventilation opening on be each provided with can control ventilation opening opening and closing air switch device, further include out Close control mechanism, wind of the switching control mechanism for controlling indoor ventilation opening and outside ventilation opening when shaft rotates Mouth switching device opens and closes in turn.

2. a kind of indoor sound-proof ventilation unit as described in claim 1, which is characterized in that the ventilation opening of the indoor is point It is not set at least two of impeller homonymy both ends, the ventilation opening of the outside is to be respectively arranged at impeller homonymy both ends extremely It is two few.

3. a kind of indoor sound-proof ventilation unit as claimed in claim 2, which is characterized in that the air switch device includes edge Perpendicular to the fixation switchboard and movable switch plate of the setting of indoor outside direction, two ventilation openings at corresponding ventilation babinet homonymy both ends It is each provided with one piece of fixed switchboard, fixed switchboard face is arranged and opposite outer end is fixed on ventilation cabinet wall On, outside side is additionally provided with one block of movable switch plate between two pieces of fixed switchboards at ventilation babinet homonymy both ends, Movable switch plate tool there are one and the overlapping of fixed switchboard part and both make after overlapping can in corresponding ventilation opening and Partition is formed between ventilated cavity, being provided on movable switch plate can allow movable switch plate and fixation to be opened under without outer force effect Close the enclosed member that plate lap is bonded to each other；The switching control mechanism include be located at fixed switchboard middle inside and to One arc convex of impeller direction evagination further includes a cam being arranged on impeller, the outside position of the arc convex In in the rotation path circle range of cam, the maximum distance that the arc convex can extend into the rotation path circle of cam is small In the closure function range maximum distance that enclosed member generates.

4. a kind of indoor sound-proof ventilation unit as claimed in claim 3, which is characterized in that the enclosed member is movable switch The ferromagnetic component that can be mutually attracted respectively being arranged on the opposite flank of plate and the overlapped part of fixed switchboard.

5. a kind of indoor sound-proof ventilation unit as claimed in claim 4, which is characterized in that the outer middle side part of the movable switch plate One piece of limit partition board is further fixedly arranged on the ventilated cavity inner wall in face direction, limit partition board inner end is attracted apart from ferromagnetic component Movable switch plate lateral surface distance is less than ferromagnetic component and generates actuation sphere of action maximum distance and be greater than or equal to arc when state Shape protrusion can extend into the maximum distance in the rotation path circle of cam.

6. a kind of indoor sound-proof ventilation unit as claimed in claim 5, which is characterized in that movable switch plate and limit partition board or In ventilated box body where person's limit partition board spring is additionally provided between side wall.

7. a kind of indoor sound-proof ventilation unit as claimed in claim 2, which is characterized in that the air switch device includes edge The indoor fixation channel plate and active tunnel plate outside direction setting and be mutually parallel, fixed channel plate are set in each ventilation opening End is set to the other side, the energy under without outer force effect is provided on active tunnel plate by the side in intermediate direction, active tunnel plate Active tunnel plate and fixed channel plate is enough allowed to be affixed the enclosed member for merging and blocking corresponding ventilation opening；The switching control mechanism packet The push rod perpendicular to fixed channel plate and the setting of active tunnel plate is included, push rod one end is slidably disposed through fixed channel plate and supports It is connected on active tunnel plate, for the setting of the push rod other end there are one wedge block, wedge block has an inclined-plane for facing impeller direction, leads to Two wedge blocks at wind box homonymy both ends are symmetrical arranged and there are one thrust block pad, thrust block pad faces for setting between two wedge blocks Have the direction of impeller there are one arc convex, thrust block pad is provided with thrust block pad between impeller direction and ventilation cabinets cavity Resetting spring, the thrust block pad left and right sides are each provided with the oblique face of the inclined-plane cooperation of one and wedge block；The switch control machine Structure further includes a cam being arranged on impeller, and the outside of the arc convex is located in the rotation path circle range of cam, It acts on arc convex when cam rotates and drives the maximum distance that push rod moves less than the closure function model that enclosed member generates Enclose maximum distance.

8. a kind of indoor sound-proof ventilation unit as claimed in claim 7, which is characterized in that the enclosed member is active tunnel Backboard is from the active tunnel sheet reset spring being arranged between fixed channel plate side side and corresponding ventilation cabinet wall.

9. a kind of indoor sound-proof ventilation unit as claimed in claim 7, which is characterized in that the active tunnel backboard is from fixation Channel plate side is additionally provided with flexible folding baffle between the end and corresponding ventilation cabinet wall in impeller direction.

10. a kind of indoor sound-proof ventilation unit as described in claim 1, which is characterized in that ventilation babinet is cuboid, inner cavity Deadener is provided on wall；

It is provided with primary filter at the ventilation opening of ventilation babinet side and the side constitutes indoor, the ventilation babinet other side leads to It is provided with stormproof louvre at air port and the side constitutes outside；

The actuating unit includes a wind wheel, and described shaft one end rotationally extends ventilation babinet and is connected with wind wheel.