CN112443919A

CN112443919A - Ventilation device

Info

Publication number: CN112443919A
Application number: CN202011275656.6A
Authority: CN
Inventors: 葛林
Original assignee: Vaillant Wuxi Heating Equipment Co Ltd
Current assignee: Vaillant Wuxi Heating Equipment Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-03-05

Abstract

The invention provides a ventilation device which comprises an air pipe extending along the axial direction, an air valve movably arranged in the air pipe to adjust the ventilation quantity, and a driving device for driving the air valve to move. The damper includes a pair of foldable dampers such that the damper can be actuated to fold the pair of dampers to fully open the ventilation and can be actuated to unfold the pair of dampers to fully close the ventilation. Because the air valve uses the folding air plate, the air valve can accurately adjust the ventilation quantity in the air pipe.

Description

Ventilation device

Technical Field

The invention relates to a ventilation device, in particular to an air valve for adjusting air volume in the ventilation device.

Background

A ventilation line is provided in the ventilation apparatus to supply outdoor air into the room and/or discharge indoor air to the outside. The air duct is usually provided with an air valve to adjust the air volume, including fully opening ventilation and fully closing ventilation. The existing air valve is usually a rotary air valve, i.e. an air plate rotates around a pivot driven by a motor to adjust air volume, but because a main shaft of the motor needs to bear air pressure in a head-on manner, the air plate can not stay at any position due to the change of the air pressure, and thus the air volume can not be accurately adjusted.

Disclosure of Invention

The invention aims to provide a ventilation device, wherein an air valve of the ventilation device can accurately adjust air volume.

To achieve the above object, the present invention provides a ventilating device including an air duct extending in an axial direction, an air valve movably disposed in the air duct to adjust a ventilation amount, and a driving unit driving the air valve to move. The damper includes a pair of foldable dampers such that the damper can be actuated to fold the pair of dampers to fully open the ventilation and can be actuated to unfold the pair of dampers to fully close the ventilation.

As a further improvement of the present invention, the damper further comprises a pivot about which the pair of dampers are independently rotatable, respectively.

As a further improvement of the invention, the air pipe is provided with an axial guide rail and a radial guide rail perpendicular to the axial guide rail, and the pair of air plates are matched with the radial guide rail; the pivot moves along the axial guide rail under the drive of the driving device, and simultaneously, the pair of air plates move along the radial guide rail.

As a further improvement of the invention, the axial guide rail comprises an axial guide groove which is arranged on the wall of the air duct and extends along the axial direction, and the driving device comprises a driving piece which extends into the axial guide groove and is matched with the end part of the pivot.

As a further improvement of the invention, the axial end wall of the air pipe is fixedly provided with a guide rod extending in the radial direction, and the radial guide rail comprises a radial guide groove formed in the guide rod; the pair of wind plates are respectively provided with a limiting rod extending into the radial guide groove.

As a further improvement of the invention, the extending direction of the limiting rod is parallel to the pivot.

As a further development of the invention, the drive device comprises a motor and a transmission mechanism, with which the drive element cooperates.

As a further improvement of the invention, the transmission mechanism comprises a driving wheel driven by a motor, a driven wheel and a transmission belt matched with the driving wheel and the driven wheel, and the driving piece is fixedly arranged on the transmission belt.

As a further improvement of the invention, the transmission mechanism comprises a screw driven by the motor and a nut rotationally matched with the screw, and the driving piece is fixedly arranged on the nut.

As a further improvement of the invention, the material of which the wind plate is made at least comprises plastic and rubber.

Compared with the prior art, the invention has the beneficial effects that: because the air valve uses the folding air plate, the air valve can accurately adjust the ventilation quantity in the air pipe; in addition, the material for manufacturing the air deflector at least comprises plastic and rubber, and by adopting the structure, when the air valve closes to ventilate, the adhesion provided by the rubber can ensure that the edge of the air deflector can be reliably sealed with the inner wall of the air pipe, and meanwhile, the fatigue resistance and the impact resistance can be improved by virtue of the characteristics of the plastic.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings related to the present invention in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic perspective view of a ventilation device of the present invention in one embodiment;

FIG. 2 is a perspective view of a fan duct and damper assembly of the ventilation apparatus shown in FIG. 1;

FIG. 3 is a view of the cover plate of the drive device of the damper assembly shown in FIG. 2 removed to show the internal construction thereof;

FIG. 4 is an exploded perspective view of the air duct and air valve assembly shown in FIG. 2;

FIG. 5 is a rear view of the air duct and air valve assembly shown in FIG. 2;

FIG. 6 is a schematic sectional view taken along line A-A of FIG. 3;

FIG. 7 is a view similar to FIG. 2 showing another embodiment of the air duct and air valve assembly;

FIG. 8 is a view of the cover plate of the drive device of the damper assembly shown in FIG. 7 removed to show the internal construction thereof;

figure 9 is an exploded perspective view of the air duct and air valve assembly shown in figure 8.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.

In one embodiment of the present invention, as shown in fig. 1, a ventilation apparatus 100 may be installed in a space above a ceiling of an indoor. The ventilating device 100 may be a total heat type ventilating device including a case, an air supply inlet 101 for allowing outdoor air to be introduced, an air discharge outlet 102 for allowing indoor air to be discharged, which are provided at one side of the case, and an air discharge inlet 103 for allowing indoor air to be introduced, and an air supply outlet 104 for allowing outdoor air to be discharged, which are provided at the other side of the case. An air passage is provided in the housing, and the air passage may be an air supply passage defined between the air supply inlet 101 and the air supply outlet 104 for sending outside air from the outside to the inside, or an air discharge passage defined between the air discharge inlet 103 and the air discharge outlet 102 for sending indoor air from the inside to the outside. A heat exchange part may be provided at an intersection of the air supply path and the air discharge path so that external air introduced from the outside through the air supply path and indoor air discharged from the inside of the room through the air discharge path are heat exchanged in a non-contact manner in the heat exchange part, thereby supplying the heated external air to the inside of the room without giving a user a sense of discomfort in a cold winter season. In other embodiments, the ventilation device may be an air exhaust device for exhausting indoor air to the outside only, or a fresh air device for introducing outdoor air to the inside only.

Referring to fig. 2 to 6, in the present embodiment, an air valve assembly is disposed on the air pipe where the exhaust outlet 102 is located. The air duct 102 extends in an axial direction. In other embodiments, the air valve assembly may also be disposed on the air duct where the air supply outlet,

inlet

101, 104 or the air exhaust inlet 103 is located. The cross section of the duct in this embodiment is circular, but in other embodiments, the duct may have other shapes, such as square. The air valve assembly includes an air valve 17 movably disposed in the air duct 102 to adjust the amount of air to be ventilated, a driving device for driving the air valve 17 to move, and a guide bar 18.

The damper 17 includes a pair of

foldable dampers

171, 172 that are individually pivotable about a pivot axis, respectively. The pivot shaft is provided at both axial ends thereof with

projections

1731, 1732, respectively. The pair of

wind plates

171, 172 each extend with a

stopper

1711, 1721 on a side away from the pivot in a direction parallel to the pivot. As shown in fig. 5 and 6, the walls of the duct 102 are provided with axially extending

axial guide slots

111, 112 to define axial guide tracks. The

pivot protrusions

1731, 1732 may extend into the

axial guide grooves

111, 112, respectively, and move along the axial guide rails. A radially extending guide rod 18 is fixed to the axial end wall of the air duct 102. The guide bar 18 has two vertically distributed bar bodies 181 (only one of which is labeled), and a fixing portion 182 extending from the bar bodies 181. The fixing portion 182 may be fixed to the axial end wall of the air duct 102 by screws.

Radial guide slots

1811, 1812 are formed in each rod 181 to define a radial guide perpendicular to the axial guide. The limiting

rods

1711 and 1721 of the pair of wind plates can respectively extend into the

radial guide grooves

1811 and 1812 and can move along a radial guide rail.

In this embodiment, the driving device includes a base 11 mounted on an outer wall of the duct 102, a cover 12 engaged with the base 11, a motor 13 housed in the base and the cover, a transmission mechanism, a first bracket 15 and a second bracket 16 for fixing the transmission mechanism to the base 11, and a driving member 144 engaged with the transmission mechanism. Wherein, the motor can be a stepping motor; the transmission mechanism comprises a driving wheel 141 driven by the motor 13, a driven wheel 142 and a transmission belt 143 matched with the driving wheel 141 and the driven wheel 142; the driving member 144 is fixedly mounted on the belt 143. The base 11 and the first bracket 15 are provided with

slots

113 and 151 corresponding to the axial guide groove 111, and the driving member 144 can pass through the

slots

113 and 151 and extend into the axial guide groove 111 to cooperate with the protrusion 1731 of the pivot shaft.

When the driving device works, the motor 13 drives the driving wheel 141, and further drives the transmission belt 143 and the driven wheel 142 to work. At this time, the driving member 144 fixed on the transmission belt 143 drives the pivot of the damper 17 to move along the axial guide rail and drives the

stopper rods

1711, 1721 of the dampers to move along the radial guide grooves 1811, so that the damper 17 can fold the pair of

dampers

171, 172 to completely open the ventilation, or can also open the pair of

dampers

171, 172 to completely close the ventilation, or can stop at any position between the two extreme positions to allow the proper amount of air to pass through.

Because the air valve uses the folding air plate, the air valve can accurately adjust the ventilation quantity in the air pipe. In addition, the material used for making the air plate at least comprises plastic and rubber, for example, the air plate can be formed by Acrylonitrile Butadiene Styrene (ABS) plastic and Ethylene Propylene Diene Monomer (EPDM) rubber through double-shot molding, and by adopting the structure, when the air valve is closed to ventilate, the reliable sealing between the edge of the air plate and the inner wall of the air pipe can be ensured by the bonding force provided by the rubber, and meanwhile, the fatigue resistance and the impact resistance can be improved by virtue of the characteristics of the plastic.

Fig. 7 to 9 show another embodiment of the air valve assembly of the present invention, the main difference between this embodiment and the above embodiment is the transmission mechanism, and for the sake of brevity, the same reference numerals are used for the same components as those of the above embodiment. In the present embodiment, the driving device includes a base 21 attached to an outer wall of the duct 102, a cover 22 engaged with the base 21, a motor 23 housed in the base and the cover, a transmission mechanism, and a driving member 242 engaged with the transmission mechanism. The base 21 is provided with a slit 211 corresponding to the axial guide groove 111. The transmission mechanism comprises a screw 241 driven by the motor 23 and a nut in rotational engagement with the screw, the drive member 242 being fixedly mounted on the nut and being insertable through the slot 211 and further into the axial guide groove 111 to engage with the protrusion 1731 of the pivot. When the driving device works, the motor 23 drives the screw rod 241 to rotate, the driving piece 242 moves linearly along with the nut, and at the same time, the pivot of the air valve 17 moves along the axial guide rail and drives the limiting

rods

1711 and 1721 of the air plates to move along the radial guide rail in the radial guide groove 1811, so that the air valve 17 can fold the pair of

air plates

171 and 172 to completely open the ventilation, or can also open the pair of

air plates

171 and 172 to completely close the ventilation, or can stop at any position between the two extreme positions to allow the proper air flow to pass through.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The ventilation equipment comprises an air pipe extending along the axial direction, an air valve movably arranged in the air pipe to adjust the ventilation quantity and a driving device for driving the air valve to move; the method is characterized in that: the air valve comprises a pair of foldable air plates; the damper may be actuated to fold the pair of louvers to fully open the vent, and may also be actuated to unfold the pair of louvers to fully close the vent.

2. A ventilating device according to claim 1, characterized in that: the damper further includes a pivot about which the pair of dampers are individually rotatable, respectively.

3. A ventilating device according to claim 2, characterized in that: the air pipe is provided with an axial guide rail and a radial guide rail perpendicular to the axial guide rail, and the pair of air plates are matched with the radial guide rail; the pivot moves along the axial guide rail under the drive of the drive device, and simultaneously, the pair of air plates move along the radial guide rail.

4. A ventilating device according to claim 3, characterized in that: the axial guide rail comprises an axial guide groove which is arranged on the wall of the air pipe and extends along the axial direction, and the driving device comprises a driving piece which extends into the axial guide groove and is matched with the end part of the pivot.

5. A ventilation device according to claim 3 or 4, characterized in that: the axial end wall of the air pipe is fixedly provided with a guide rod extending in the radial direction, and the radial guide rail comprises a radial guide groove formed in the guide rod; the pair of wind plates each have a stopper rod extending into the radial guide groove.

6. A ventilation device according to claim 5, characterized in that: the extending direction of the limiting rod is parallel to the pivot.

7. A ventilation device according to claim 4, characterized in that: the driving device comprises a motor and a transmission mechanism, and the driving piece is matched with the transmission mechanism.

8. A ventilation device according to claim 7, characterized in that: the transmission mechanism comprises a driving wheel driven by a motor, a driven wheel and a transmission belt matched with the driving wheel and the driven wheel, and the driving piece is fixedly installed on the transmission belt.

9. A ventilation device according to claim 7, characterized in that: the transmission mechanism comprises a screw rod driven by a motor and a nut in rotary fit with the screw rod, and the driving piece is fixedly installed on the nut.

10. A ventilating device according to claim 1, characterized in that: the material of which the wind plate is made at least comprises plastic and rubber.