WO2021167147A1

WO2021167147A1 - Air purifier

Info

Publication number: WO2021167147A1
Application number: PCT/KR2020/002577
Authority: WO
Inventors: 최동원; 김홍철
Original assignee: 와이앤티 주식회사
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2021-08-26

Abstract

An air purifier is disclosed. According to one aspect of the present invention, provided is an air purifier provided at the outer side of a vehicle in order to purify external air, the air purifier comprising: a housing having a suction port opened in the movement direction of the vehicle so that external air is suctioned therethrough, an inner space connected to the suction port, and a discharge port for discharging the air from the inner space; a filter provided in the housing so as to remove foreign substances from external air suctioned through the suction port; a suction fan disposed in the inner space so as to discharge air through the discharge port, thereby forming negative pressure in the inner space, and thus external air is suctioned through the suction port; and a driving turbine rotatably provided in the housing so as to rotate by means of air flow generated according to the movement of the vehicle, thereby providing driving force to the suction fan.

Description

air filter

The present invention relates to an air purification device, and more particularly, to an air purification device installed in a vehicle or the like to purify outdoor air.

Recently, air quality deteriorated due to yellow dust and fine dust is emerging as a social problem. Accordingly, the indoor air purifier market is continuously expanding, and research investment by large corporations is being made.

However, research investment on outdoor air purification is relatively sluggish.

Conventionally, most of the facilities for outdoor air purification were dust collection vehicles of a dust suction method.

However, the area that can be purified by the dust suction method of the dust collecting vehicle is limited, so the effect on the improvement of outdoor air quality is also insignificant.

Accordingly, some countries, such as China, where air quality issues are being raised seriously throughout society, are trying to improve outdoor air quality by installing large air purification towers in parks, etc., but controversy over its effectiveness continues to arise. is becoming a reality.

[Prior art literature]

Republic of Korea Patent Publication No. 10-1816833 (Jan. 11, 2018, a dust collector vehicle having an air purification function by spraying and dust inhalation and a positive pressure forming structure in the driver's seat, and a dust collector used therein)

An object of the present invention is to provide an air purifier installed in a vehicle or the like to purify outdoor air.

According to one aspect of the present invention, there is provided a device installed outside a vehicle to purify external air, the suction port being opened toward the moving direction of the vehicle to suck outside air, an interior space connected to the suction port, and air from the interior space A housing having an outlet for discharging, a filter installed in the housing to remove foreign substances from external air sucked in through the inlet, and disposed in the inner space to discharge air through the outlet so that external air is sucked into the inlet to enter the inner space An air purification apparatus is provided, comprising: a suction fan forming a negative pressure; and a driving turbine rotatably installed in a housing to rotate by an air flow generated according to movement of a vehicle to provide a driving force to the suction fan.

The inlet may be formed in the front and rear surfaces of the housing, respectively, the filter may be disposed in the inlet in the front and rear of the housing, respectively, and the outlet may be formed in the upper or lower surface of the housing.

The housing is opened toward the moving direction of the vehicle to form an inlet through which external air is introduced and an air flow path connected to the inlet, and the driving turbine is installed in the air flow path and rotates by external air introduced through the inlet. .

The inlets are respectively formed in the front and rear surfaces of the housing, so that the driving turbine is rotatable by external air both when the vehicle is moving forward and backward.

The drive turbine includes a drive shaft rotatably installed in a housing, and a plurality of drive blades disposed to be radially symmetrical with respect to the drive shaft, the drive blades having a plate shape extending along a longitudinal direction of the drive shaft, and moving the vehicle is curved to be concave toward the air flow generated by .

It further includes an inlet guide disposed at the rear of the inlet in the air flow path to guide external air flowing into the inlet, wherein the inlet guide is curved to surround a portion of the driving blade, and the air flow generated according to the movement of the vehicle can be rotated in the direction of rotation of the drive turbine.

The suction fan may include a centrifugal fan that sucks in air in an axial direction and discharges it in a circumferential direction.

The suction fan includes a rotational shaft rotatably installed in the housing, and a plurality of rotational blades disposed to be radially symmetrical with respect to the rotational axis, is formed to be curved to surround the plurality of rotational blades, and guides the sucked air to the outlet It further includes a discharge guide, and the flow path partitioned by the discharge guide may be wider toward the discharge port.

The suction fan may rotate integrally with the drive turbine.

The outlet may be connected to an air inlet of the vehicle by a connecting passage.

It may further include a magnet for removing magnetic particles from the external air sucked through the inlet.

According to the present invention, it is possible to filter fine dust in outdoor air using an air flow that occurs naturally according to the movement of a vehicle. By creating a negative pressure in the space within the housing, it is possible to increase the air flow rate passing through the filter, thereby improving the air purification efficiency.

1 is a perspective view showing an air purification apparatus according to an embodiment of the present invention.

2 is a view showing an example in which the air purification apparatus according to an embodiment of the present invention is installed in a vehicle.

3 is a cross-sectional view taken along line AA of FIG. 1 ;

Figure 4 is a perspective view showing the inside of the air purification apparatus according to an embodiment of the present invention.

5 and 6 are cross-sectional views taken along line BB of FIG. 1 .

7 is a cross-sectional view taken along line CC of FIG. 1 ;

FIG. 8 is a cross-sectional view taken along line DD of FIG. 1 ;

[Explanation of code]

10: vehicle

12: air inlet

100: air filter

110: housing

111: intake

112: interior space

113: outlet

114: inlet

115: air flow path

120: filter

130: suction fan

132: rotation shaft

134: rotating blade

136: ejection guide

140: drive turbine

142: drive shaft

144: drive blade

146: inflow guide

150: connection passage

160: magnet

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, when a part "includes" a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise stated.

In addition, coupling or connection does not mean only a case of direct physical contact between each component in a contact relationship between each component, but another component is interposed between each component and the other component It should be used as a concept that encompasses even the case where each component is in contact with each other.

Since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of description, the present invention is not necessarily limited to the illustrated bar.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

Hereinafter, a preferred embodiment of the air purifying device according to the present invention will be described in detail with reference to the accompanying drawings, and in the description with reference to the accompanying drawings, the same or corresponding components are given the same reference numerals and overlapped therewith. A description will be omitted.

According to this embodiment, as shown in Figs. 1 to 8, as a device installed outside the vehicle 10 to purify external air, the housing 110 (intake port 111, internal space 112, having an outlet 113 , an inlet 114 , and an air flow path 115 ), a filter 120 , a suction fan 130 (a rotating shaft 132 , a rotating blade 134 , and an exhaust guide 136 ) ), a drive turbine 140 (with a drive shaft 142 , a drive blade 144 , and an inlet guide 146 ), a connecting passage 150 , and a magnet 160 . (100) is presented.

According to the present embodiment as described above, it is possible to effectively filter fine dust in the outdoor air by using an air flow naturally generated according to the movement of the vehicle 10 . That is, by generating a negative pressure in the inner space 112 of the housing 110, the flow rate of air passing through the filter 120 can be increased, and thus, the air purification efficiency can be significantly improved.

Hereinafter, each configuration of the air purification apparatus 100 according to the present embodiment will be described in more detail with reference to FIGS. 1 to 8 .

The housing 110 may be installed outside the roof of the vehicle 10 such as a subway, as shown in FIG. 2 . In addition, the housing 110 is disposed adjacent to the air inlet 12 of the vehicle 10 , and the outlet 113 of the housing 110 is the air inlet 12 of the vehicle 10 through the connecting passage 150 . can be connected with

As described above, by connecting the housing 110 and the air inlet 12 of the vehicle 10 through the connecting passage 150 , the clean air filtered and discharged by the present air purification device 100 is discharged into the vehicle 10 . can be supplied immediately.

The housing 110 may be configured in a rectangular parallelepiped shape as a whole, and the inlet 111, the inner space 112, and the outlet 113 may be formed in the housing 110 as shown in FIGS. 3 to 8, Separately, the inlet 114 and the air flow path 115 may be formed.

The intake port 111 is opened toward the moving direction of the vehicle 10 as shown in FIGS. 1, 3 and 4 , so that external air can be sucked through this when the vehicle 10 moves. More specifically, the inlet 111 may be formed on the front and rear surfaces of the housing 110 , respectively. Accordingly, the outside air can be effectively sucked even when the vehicle 10, particularly the subway, moves forward as well as backward.

In addition, as shown in FIG. 4 , the inlet 111 may be formed in most areas of the front and rear surfaces of the housing 110 , except for some areas in which the inlet 114 is formed. That is, the suction port 111 may include a suction unit located in the center of the housing 110 and an extension unit connected to both sides thereof and located adjacent to the lower portion or upper portion of the inlet port 114 .

As described above, since the suction port 111 is formed over the front and rear surfaces of the housing 110 as a whole, the suction surface of the outside air can be maximally secured, so that the air purification efficiency can be further improved.

In this embodiment, in response to the two-way driving of the vehicle 10, the inlet 111 and the inlet 114 are respectively formed on the front and rear surfaces of the housing 110, and the filter 120 and the intake ports on the front and rear surfaces of the housing 110 ( 111) is provided as an example, but unlike the case in which the inlet 111, the inlet 114, and the filter 120 are installed only on the front or rear of the housing 110, when driving the vehicle 10 in one direction Of course, the case where the air purifying action only occurs is included in the scope of the present invention.

The inner space 112 is a space connected to the suction port 111 as shown in FIGS. 3 and 4 , and is a region in which a negative pressure is formed according to the operation of the suction fan 130 . Here, the negative pressure means a pressure lower than the external air of the housing 110 , and as such, the negative pressure is formed in the inner space 112 , so that the flow rate of air sucked into the housing 110 through the filter 120 can be increased. , the air purification efficiency can be further increased.

The outlet 113 is configured to discharge air from the inner space 112 of the housing 110 as shown in FIGS. 1, 4 and 5 . The suction fan 130 may be installed in the inner space 112 of the housing 110 , and the air sucked in by the suction fan 130 may be discharged to the outside of the housing 110 through the outlet 113 .

In this case, the outlet 113 may be formed on the upper surface of the housing 110 . As described above, the inlet 111 may be formed on both the front and rear surfaces of the housing 110, and the lower surface of the housing 110 may be coupled to the vehicle 10, for example, the upper surface of a bus or passenger car, It is necessary to form an outlet 113 on the upper surface of the housing 110 to discharge air. When the outlet 113 is formed on the upper surface of the housing 110 as described above, a cover may be installed on the outlet 113 to prevent the inflow of rain, snow, and the like.

Meanwhile, the outlet 113 may be formed on the lower surface of the housing 110 . As such, since the outlet 113 is formed on the lower surface of the housing 110, it is possible to effectively block the inflow of rain, snow, etc. without a separate cover. In this case, in order to secure a space for air discharge, the housing 110 may be installed to be spaced apart from the upper surface of the vehicle 10, for example, the subway by a predetermined distance through a bracket or the like.

As shown in FIGS. 1, 5 and 6 , the inlet 114 is opened toward the moving direction of the vehicle 10 so that outside air can be introduced therethrough. The inlet 114 may also be formed on the front and rear surfaces of the housing 110 like the inlet 111 , respectively. Accordingly, the flow of external air is effectively introduced even when the vehicle 10, in particular, the subway moves forward as well as backward, so that the driving turbine 140 rotates by the external air when the vehicle 10 moves forward and backward. can create

The air flow path 115 is connected to the inlet 114 as shown in FIGS. 5 and 6 , and a driving turbine 140 is installed in the air flow path 115 to be introduced through the inlet 114 . It can be rotated by external air.

In this case, the air flow path 115 may be divided from the inner space 112 by the inlet guide 146 as shown in FIGS. 4 to 6 and not connected to each other. Accordingly, the flow of external air introduced into the inlet 114 flows only through the air flow path 115 .

In the present embodiment, the case in which the inlet 114 and the air flow path 115 are respectively formed on both sides of the housing 110 is presented as an example. The furnace 115 is formed so that the driving turbine 140 can be installed only on one side of the housing 110 , and the inlet 114 and the air flow path 115 are all omitted so that all or part of the driving turbine 140 is removed. It may be exposed to the outside of the housing 110 .

The filter 120 may be installed in the housing 110 as shown in FIGS. 1 and 3 to remove foreign substances from the external air sucked through the suction port 111 . As described above, the filter 120 may be disposed at the intake port 111 of the front and rear surfaces of the housing 110 , respectively.

Since the filter 120 is installed in the suction port 111 as described above, the inner space 112 of the housing 110 can be partitioned by the filter 120 , so that the housing 110 according to the operation of the suction fan 130 . As a negative pressure is formed in the inner space 112 of the , external air may be strongly sucked into the filter 120 to be filtered.

The filter 120 may be installed anywhere in the inner space 112 between the inlet 111 and the outlet 113 , and may be installed only on one of the front and rear surfaces of the housing 110 .

As shown in FIGS. 3 to 6 , the driving turbine 140 is rotatably installed in the housing 110 to rotate by the air flow generated according to the movement of the vehicle 10 , It can provide driving force. As described above, by using the driving turbine 140 that is driven by the natural wind to generate rotational force, a non-powered/non-powered fine dust collecting device can be implemented.

The driving turbine 140 may include a driving shaft 142 , a driving blade 144 , and an inlet guide 146 as shown in FIGS. 5 and 6 . The rotation shaft 132 of the suction fan 130 may be directly connected to the drive shaft 142 , and accordingly, the rotational force of the driving turbine 140 may be directly transmitted to the suction fan 130 to generate suction force.

Alternatively, the rotation shaft 132 is not directly connected to the drive shaft 142 but may be connected through a separate power transmission means, for example, a gear, a belt/pulley, or the like. In this case, by adjusting the gear ratio, the diameter ratio of the pulley, etc., the number of rotations of the suction fan 130 with respect to the driving turbine 140 may be adjusted to adjust the negative pressure or suction power of the suction fan 130 .

As shown in FIGS. 5 to 7 , the driving shaft 142 may be horizontally disposed at an intermediate height of the housing 110 to be rotatably installed in the housing 110 . In addition, a plurality of driving blades 144 may be disposed to be radially symmetrical with respect to the driving shaft 142 .

The driving blade 144 may have a plate shape extending along the longitudinal direction of the driving shaft 142 as shown in FIG. 6 , and is curved to be concave toward the air flow generated according to the movement of the vehicle 10 . can have

As such, since the driving blade 144 has a plate-shaped structure concave toward the external air flow, flow energy due to the external air flow can be more efficiently converted into rotational energy.

5 and 6, the inlet 114 formed on the front surface of the housing 110 is disposed on the upper portion of the housing 110 with respect to the driving shaft 142, and the inlet port 114 formed on the rear surface of the housing 110 ( 114 may be disposed under the housing 110 with respect to the driving shaft 142 .

As described above, since the driving blade 144 has a concave structure with respect to the air flow, the inlet 114 may be disposed on the upper side at the front of the housing 110 and at the lower side at the rear of the housing 110 to correspond thereto. .

As such, the inlets 114 are alternately disposed on the upper and lower sides in the front and rear surfaces of the housing 110, respectively, so that the driving turbine 140 moves forward and backward in each case of the vehicle 10 as shown in FIG. 6 . All of them can effectively generate rotational energy.

As shown in FIGS. 5 and 6 , the inlet guide 146 may be disposed behind the inlet 114 in the air flow path 115 to guide external air flowing into the inlet 114 . More specifically, the inlet guide 146 is formed to be curved in a circumferential shape so as to surround a portion of the driving blade 144 , so that the air flow generated according to the movement of the vehicle 10 is directed in the rotational direction of the driving turbine 140 . can be turned

That is, the external air introduced through the inlet 114 rotates along the cylindrical inlet guide 146 and rotates the driving blade 144 to maximize the flow energy possessed by the external air flow, so the driving turbine 140 . can generate rotational energy more efficiently from the outside air stream.

The suction fan 130 may generate a negative pressure in the inner space 112 of the housing 110 by receiving rotational force from the driving turbine 140 . As described above, the rotary shaft 132 of the suction fan 130 is directly connected to the drive shaft 142 of the drive turbine 140 , so that the suction fan 130 and the drive turbine 140 may rotate integrally.

The suction fan 130 is disposed in the inner space 112 of the housing 110 as shown in FIGS. 7 and 8, and discharges air through the outlet 113 so that external air is sucked into the inlet 111, A negative pressure may be formed in the inner space 112 .

Here, the suction fan 130 may be a centrifugal fan that sucks air in an axial direction as shown in FIG. 7 and discharges it in a circumferential direction as shown in FIG. 8 . That is, the external air (I) flows into the inner space 112 through the filter 120 installed in the inlet 111 as shown in FIG. 7 and is sucked in the axial direction of the suction fan 130, as shown in FIG. As shown, it may be discharged in the circumferential direction of the suction fan 130 and discharged to the discharge port 113 along the discharge guide 136 . Here, the suction fan 130 may include a rotating shaft 132 , a rotating blade 134 , and an exhaust guide 136 .

As shown in FIGS. 7 and 8 , the rotation shaft 132 may be horizontally disposed at an intermediate height of the housing 110 to be rotatably installed in the housing 110 . And a plurality of rotating blades 134 may be disposed to be radially symmetrical with respect to the rotation axis 132 .

The rotating blade 134 may have a structure curved in the opposite direction to the driving blade 144 , and accordingly, when the suction fan 130 rotates in the same direction as the driving turbine 140 , the rotating blade 134 may Air may be sucked in from the inner space 112 of the housing 110 and discharged in a circumferential direction.

The discharge guide 136 is formed to be curved to surround the plurality of rotating blades 134 as shown in FIG. 8 , and may guide the air sucked in the axial direction to the discharge port 113 . That is, the discharge guide 136 may be formed to have a cylindrical shape surrounding the rotating blade 134 .

In this case, the flow path partitioned by the discharge guide 136 may be formed to become wider toward the discharge port 113 . As the flow path gradually widens toward the outlet 113 as described above, the pressure in each part of the flow path may be gradually reduced in inverse proportion to the cross-sectional area of the flow path, so that a stronger exhaust airflow may be formed in the flow path of the discharge guide 136 . .

Accordingly, since it is possible to maximize the discharge rate and speed of the air, a lower negative pressure is formed in the inner space 112 of the housing 110 to further increase the amount of external air introduced through the filter 120, as a result, the air The purification efficiency can be significantly improved.

Meanwhile, as shown in FIG. 1 , a magnet 160 may be disposed on the filter 120 . As described above, since the magnet 160 is disposed in the air intake path, magnetic particles such as dust of a metal (iron) component included in the external air sucked through the intake port 111 may also be effectively filtered and removed.

In this case, the magnet 160 may be disposed anywhere on the air intake path leading to the 'suction port 111-internal space 112-exhaust port 113', but considering the maintenance/repair aspect, it is built into the filter 120. configuration would be more effective.

As described above, preferred embodiments of the present invention have been described, but those of ordinary skill in the art can add, change, delete or add components within the scope that does not depart from the spirit of the present invention described in the claims. It will be possible to variously modify and change the present invention by this, which will also be included within the scope of the present invention.

Claims

As a device installed outside the vehicle to purify the outside air,

a housing having an inlet opening toward the moving direction of the vehicle to suck in external air, an inner space connected to the inlet, and an outlet for discharging air from the inner space;

a filter installed in the housing to remove foreign substances from external air sucked in through the suction port;

a suction fan disposed in the inner space and configured to discharge air through the outlet so that external air is sucked into the inlet to form a negative pressure in the inner space; and

and a driving turbine that is rotatably installed in the housing to rotate by an air flow generated according to the movement of the vehicle to provide a driving force to the suction fan.
According to claim 1,

The suction ports are respectively formed on the front and rear surfaces of the housing,

The filter is disposed in the intake port of the front and rear of the housing, respectively,

The outlet is formed on the upper surface or the lower surface of the housing, the air purification device.
According to claim 1,

An inlet through which external air is introduced and an air flow path connected to the inlet are formed in the housing, which is opened toward the moving direction of the vehicle;

The drive turbine is installed in the air flow path and rotates by the external air introduced through the inlet port, the air purification apparatus.
4. The method of claim 3,

The inlet is formed in the front and rear of the housing, respectively, and the driving turbine is rotatable by external air both when the vehicle is moving forward and backward.
5. The method of claim 4,

The driving turbine is

a drive shaft rotatably installed in the housing; and

A plurality of drive blades disposed to be radially symmetrical with respect to the drive shaft,

The drive blade has a plate shape extending along the longitudinal direction of the drive shaft and is curved to be concave toward an air flow generated according to the movement of the vehicle,

The inlet formed on the front surface of the housing is disposed on the upper portion of the housing with respect to the drive shaft,

The inlet formed on the rear surface of the housing is disposed under the housing with respect to the drive shaft, the air purification device.
6. The method of claim 5,

Further comprising an inlet guide disposed at the rear of the inlet in the air flow path to guide external air flowing into the inlet,

The inlet guide is formed to be curved so as to surround a portion of the drive blade, thereby turning an air flow generated according to the movement of the vehicle in a rotational direction of the drive turbine.
According to claim 1,

The suction fan includes a centrifugal fan that sucks in air in an axial direction and discharges it in a circumferential direction.
8. The method of claim 7,

The suction fan is

a rotating shaft rotatably installed in the housing; and

It includes a plurality of rotating blades arranged to be radially symmetrical with respect to the axis of rotation,

It is formed to be curved to surround the plurality of rotating blades, further comprising a discharge guide for guiding the sucked air to the outlet,

The flow path partitioned by the discharge guide is wider toward the discharge port, the air purification device.
According to claim 1,

and the suction fan rotates integrally with the drive turbine.
According to claim 1,

and the outlet is connected to the air inlet of the vehicle by a connecting passage.
According to claim 1,

The air purification apparatus further comprising a magnet for removing magnetic particles from the external air sucked through the inlet.