KR102426506B1 - Rainwater removal device for umbrella using jet blade technology - Google Patents

Abstract

The present invention relates to a rainwater removal apparatus for an umbrella using a jet blade technology, which comprises: a case main body; an umbrella input unit including a duct installed to be exposed to the outside of the case main body; an air supply unit installed in the case main body and supplying air into the umbrella input unit; an air spray unit spraying the air supplied from the air supply unit through spray holes formed along a circumference of the duct; and a rainwater discharge unit installed on a lower end of the umbrella input unit and discharging the water falling from the umbrella. The air spray unit includes: a ring-shaped body formed on a path for the air flowing from the air supply unit and making the flow of air stop to induce a uniform discharge air current; and an air guide surface formed to be inclined downwards towards the inside of the duct, having a cross-section with a width narrowing towards the spray holes, and guiding the air discharged from the air compression unit towards the spray holes to spray the air through the spray holes. The present invention aims to provide a rainwater removal apparatus for an umbrella using a jet blade technology, which is capable of removing rainwater from an umbrella within a short time.

Description

Rainwater removal device for umbrella using jet blade technology

The present invention relates to a rainwater removal device for an umbrella using a jet blade technology, and more particularly, an umbrella using a jet blade technology that can remove and dry rainwater on the umbrella in a short time by a compressed air spraying method using the venturi effect. It relates to the rainwater removal device of

Generally, an umbrella used in the rain prevents the user from getting hit by the rain, but there is a hassle of removing water after use. When bringing an umbrella soaked in rainwater into a building, the umbrella is folded and shaken to shake off some of the rainwater before entering the building. In this case, since rainwater remains in the folded umbrella, rainwater flows from the umbrella over time and contaminates the indoor floor.

For this reason, in most cases, equipment for supplying vinyl is provided at the entrance of a building or building in case of rain. In other words, it is designed to enter the room with the umbrella stored in a plastic bag. According to the length of the umbrella, there is a situation in which vinyl having about two lengths can be continuously supplied. This umbrella plastic feeder inserts the umbrella into the open plastic opening and pulls it horizontally in that state, then the vinyl is removed from the equipment together with the umbrella, and the next vinyl is waiting with the opening open.

When the user goes outside, the plastic is removed from the umbrella together with rainwater and the umbrella is used again.

This umbrella vinyl feeder is convenient to use and does not take much time, so it is being used in most buildings. However, when using an umbrella vinyl supplier, there is a problem of causing environmental pollution due to indiscriminate use of vinyl because one vinyl is consumed per one umbrella.

Instead, an umbrella rainwater remover for drying by discharging air to the umbrella has been developed, but it does not show satisfactory performance due to the shape or characteristics of the umbrella, so it is rarely actually deployed and used.

Republic of Korea Patent Publication No. 1645946 (2016.08.01)

Accordingly, the present invention has been devised to solve the above problems, and an object of the present invention is to remove rainwater on an umbrella in a short time by a compressed air spraying method using the venturi effect and to dry the jet blade technology. To provide a rainwater removal device for the used umbrella.

In order to achieve the above object, the present invention includes a case body; an umbrella input unit including a duct installed to be exposed to the outside of the case body; an air supply unit installed inside the case body and configured to supply air to the umbrella input unit; an air injection unit in which the air supplied from the air supply unit is injected through the injection hole formed along the circumference of the duct; And, it is installed at the lower end of the umbrella input unit and includes a rainwater discharge unit for discharging water dropped from the umbrella, wherein the air injection unit is formed on the path of the air flow provided by the air supply unit, and stagnates the air flow an annular body to induce a uniform discharge airflow; and an air guide surface that is formed to be inclined downwardly toward the inside of the duct and has a cross-section that decreases in width toward the injection hole, and guides the air discharged from the annular body to the injection hole. Umbrella rainwater removal device is provided.

According to an embodiment of the present invention, the annular body extends annularly around the upper periphery of the duct, a discharge port is formed on the upper surface, and an air supply line is connected so that air is supplied from the air supply unit on the lower surface, along the circumference an annular air compression portion between the outer side wall and the duct by an annularly extending outer side wall and the duct extending annularly corresponding to the outer side wall on the inner side of the outer side wall, the upper surface of the annular body A first guide surface formed on the inside and in contact with the upper end of the duct and guiding the air discharged through the outlet into the duct, the first guide surface extending in the circumferential direction along the upper surface of the annular body do.

According to an embodiment of the present invention, an annular guide plate disposed on the outer sidewall and exposed on the case body and guiding the air discharged through the outlet into the duct; and the first guide surface disposed on the first guide surface and the injection hole is formed by a gap between the first guide surface and the air discharged through the discharge hole by providing a passage along with the first guide surface to the injection hole It further includes an air guide portion forming a second guide surface for guiding the air.

According to an embodiment of the present invention, the injection hole is formed along the inner circumference of the duct between the first guide surface and the second guide surface, the second guide surface is relative to the angle of inclination of the first guide surface. is formed with a further downward slope.

According to an embodiment of the present invention, it is installed on the upper side of the duct inlet of the umbrella inlet, and includes an umbrella detection sensor for detecting that the umbrella is put into and discharged into the umbrella inlet.

According to an embodiment of the present invention, the rainwater discharge unit, blocking the lower portion of the duct and a barrier rib having a plurality of drain holes formed; And it includes a rain gutter for collecting rainwater dropped from the umbrella at the lower portion of the blocking partition wall.

According to an embodiment of the present invention, an opening having an accommodating space is formed at the lower end of the duct on any side of the case body, and the rain gutter is detachably accommodated in the accommodating space of the opening.

According to an embodiment of the present invention, the air supply unit includes a support frame having a layer structure installed inside the case body to support each vacuum motor assembly, and the vacuum motor assembly includes: a vacuum motor for driving an impeller; a motor housing filled with air sucked in by the impeller; and an air supply line connected to the motor housing and serving as a passage for supplying the air to the air injection unit.

According to the rainwater removal apparatus of the umbrella using the jet blade technology according to the present invention of the configuration as described above, there is an effect that can remove the rainwater on the umbrella in a short time by the compressed air spraying method using the venturi effect.

The sprayed air is uniformly sprayed in all directions 360 degrees with respect to the umbrella, so that it is possible to improve the drop-off efficiency of rainwater.

By creating a gap through which air quickly flows between the umbrellas accommodated in the inner space of the duct, it is possible to improve the drop-off efficiency of rainwater by using the venturi effect in the inner space of the duct.

Since the air injected from the duct is heated to a predetermined temperature by the waste heat generated by the motor and injected, it is possible to improve the drying performance of the umbrella.

By forming the duct with a stainless steel material, excellent corrosion resistance and antibacterial properties can be maintained even when the duct is exposed to moisture for a long time.

1 is a perspective view showing an umbrella rainwater removal device using a jet blade technology according to the present invention.
Figure 2 is a view showing the internal configuration of the rainwater removal device of the umbrella using the jet blade technology according to the present invention.
Figure 3 is a cross-sectional view showing the rainwater discharge unit of the rainwater removal device of the umbrella using the jet blade technology according to the present invention.
Figure 4 is an exploded perspective view showing the air injection unit of the rainwater removal device of the umbrella using the jet blade technology according to the present invention.
Figure 5 is a perspective view showing the air injection unit of the rainwater removal device of the umbrella using the jet blade technology according to the present invention.
Figure 6 is a cross-sectional view showing the air injection unit of the rainwater removal device of the umbrella using the jet blade technology according to the present invention.
7 is a view showing the blowing operation of the air spraying unit of the rainwater removal device of the umbrella using the jet blade technology according to the present invention.

Since the present invention may have various changes and may have various forms, embodiments will be described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements.

The above terms are used only for the purpose of distinguishing one component from another. 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.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing an umbrella rainwater removal device using a jet blade technology according to the present invention, FIG. 2 is a view showing the internal configuration of an umbrella rainwater removal device using a jet blade technology according to the present invention, FIG. It is a cross-sectional view showing the rainwater discharge part of the rainwater removal device of the umbrella using the jet blade technology according to the present invention, Figure 4 is an exploded perspective view showing the air injection part of the rainwater removal device of the umbrella using the jet blade technology according to the present invention, Figure 5 is a perspective view showing the air spraying unit of the rainwater removal device of the umbrella using the jet blade technology according to the present invention, Figure 6 is a cross-sectional view showing the air spraying unit of the rainwater removal device of the umbrella using the jet blade technology according to the present invention, Figure 7 is a view showing the blowing operation of the air spraying unit of the rainwater removal device of the umbrella using the jet blade technology according to the present invention.

The rainwater removal device of an umbrella using a jet blade technology according to the present invention, the case body 100, the umbrella input unit 110, the rainwater discharge unit 120, the air supply unit 130, the air injection unit 140, the control unit (not shown) is included.

As shown in Figures 1 and 2, the case body 100 is provided with a power supply unit 160 that turns on and off the power of the umbrella sensor 150 and the air supply unit 130 on the upper surface, and the rainwater is attached to the folded fold. The umbrella in the state is provided so that the putable umbrella input unit 110 is exposed. In addition, both sides of the case body 100 are provided with handles 170 for facilitating movement of the device, and an exhaust port 180 through which air is discharged is provided on the bottom surface, enabling a free position change of the device A wheel 190 is provided.

In particular, the wheel 190 may be provided with a wheel fixing device (not shown) for stably maintaining the device in a stopped state.

The umbrella input unit 110 includes a cylindrical duct 111 with an open upper and lower portions. The duct 111 is exposed on the upper surface of the case body 100 so that an umbrella can be put therein. The duct 111 extends to the lower portion of the case body 100, and may extend as much as the length of the cloth portion of the umbrella covered with rainwater in comparison with the long umbrella.

Such a duct 111 may be corroded and bacteria may breed due to the nature of the space exposed to moisture for a long time. can get

An umbrella sensor 150 is installed in the umbrella input unit 110 . The umbrella sensor 150 is installed above the entrance of the duct 111 of the umbrella input unit 110, and detects that the umbrella is put in and discharged.

Umbrella detection sensor 150 may generally be composed of an infrared sensor capable of detecting motion, a proximity sensor, etc., and provides a signal detected by the umbrella detection sensor 150 to a general control unit (not shown), the control unit The air supply unit 130 is controlled to operate.

In an embodiment of the present invention, an infrared transmitter is installed on one side of the duct 111 , and an infrared receiver is installed on the other side corresponding to the infrared transmitter.

The rainwater discharge unit 120 is a device for discharging the rainwater dropped from the umbrella input through the umbrella input unit 110 to the outside.

As shown in Figure 3, the lower portion of the duct 111 is installed a rain gutter 121 for collecting rainwater dropped from the umbrella. In addition, a blocking partition wall 122 is provided between the duct 111 and the rain gutter 121 to block the umbrella from going down further under the duct 111 .

The blocking partition walls 122 are spaced apart from each other at a predetermined distance on the same plane of the bottom panel 101 of the case body 100 and are installed just below the lower end of the duct 111 . A plurality of drain holes 122a are formed in the blocking partition wall 122 so that the rainwater of the umbrella passes through and falls to the rain gutter 121 . The blocking partition wall 122 also serves to prevent rainwater that has fallen on the rain gutter 121 through the drain hole 122a from bouncing upward again.

According to an embodiment of the present invention, the rain gutter 121 may be detachably installed on the bottom panel 101 of the case body 100 in a drawer manner. At this time, an opening 120 having an accommodating space for accommodating the rain gutter 121 is formed on any side of the case body 100 so that the rain gutter 121 can be easily attached and detached from the outside. When the rain gutter 121 is filled with water to some extent, the user can use the rain gutter 121 by taking out the rain gutter 121 from the opening 120 located on the side of the case body 100 and throwing away the rainwater.

The air supply unit 130 is installed adjacent to the duct 111 on one side of the inside of the case body 100 and is generated from the vacuum motor assembly 131 and the vacuum motor assembly 131 capable of supplying compressed air to the duct 111 . and an air supply line 134 for supplying the used air to the duct 111 . Here, when viewed from the front of the case body 100 , the duct 111 is located on the left side, and the air supply unit 130 is located on the right side.

Referring to FIG. 2 , in the air supply unit 130 , the vacuum motor assembly 131 has a two-layer structure, and a support frame 102 is provided on each layer of the case body 100 to each vacuum motor assembly 131 . ) is supported.

The vacuum motor assembly 131 includes a vacuum motor 132 for driving an impeller (not shown) and supplies compressed air generated from the vacuum motor 132 to the air injection unit 140 .

In the vacuum motor 132, air sucked in by the impeller is filled in the motor housing 133, and through the air supply line 134 connected between the motor housing 133 and the air injection unit 140, the motor housing ( 133) is supplied to the air stored in the air injection unit (140). Here, the motor housing 133 may include an air tank filled with air intake by the impeller.

The vacuum motor 132 and the impeller are accommodated and installed inside the vacuum motor assembly 131 in the form of an assembly, and when the impeller is rotated by the vacuum motor 132 , the air sucked by the impeller is introduced into the motor housing 133 . It is supplied from the motor housing 133 to the duct 111 which is the air injection unit 140 through the air supply line 134 under a predetermined pressure or more. A connection valve 135 is provided in the motor housing 133 of the air supply unit 130 and the duct 111 of the air injection unit 140 so that the air supply line 134 can be connected. Here, of course, the connection valve 135 should be formed in the same number as the number of the two vacuum motors 132 .

The air injection unit 140 is configured to inject compressed air supplied from the air supply unit 130 into the duct 111 into which the umbrella is inserted. The air spraying unit 140 can sufficiently spray air to the umbrella in a state in which the umbrella is put in the duct 111, which is the umbrella input unit 110, to remove the rainwater buried in the umbrella in a short time. At this time, the air injected into the duct 111 by the waste heat generated by the driving of the vacuum motor 132 is heated to a predetermined temperature. When the air in this heated state is sprayed inside the duct 111 into which the umbrella is put, it is possible to dry the umbrella while dropping the rainwater attached to the umbrella. Therefore, since the air injected into the duct 111 is heated by the waste heat of the vacuum motor 132 and injected, it is possible to improve the drying performance of the umbrella.

The air injection unit 140 has an annular body 141 having an annular air compression unit 143 therein is provided around the upper periphery of the duct 111 , and a discharge port 144 is provided on the upper surface of the annular body 141 . is formed

On the lower surface of the annular body 141 , the air supply line 134 is provided with a connection valve 136 , which is a connecting member, so that air generated from the vacuum motor 132 is supplied through the air supply line 134 .

The annular body 141 includes an outer side wall 142 extending annularly along the circumference, and a circumferential surface of a duct 111 extending annularly corresponding to the outer side wall 142 on the inner side of the outer side wall 142, , an air compression unit 143 is provided in the annular space between the outer side wall 142 and the duct 111 .

As shown in FIG. 5 , a plurality of outlets 144 are formed between the outer sidewall 142 and the duct 111 , and are connected to the air compression unit 143 . The discharge ports 144 are formed at equal intervals along the circumferential direction of the upper surface of the annular body 141 .

Accordingly, the internal pressure increases while the air supplied from the vacuum motor 132 through the air supply line 134 is stagnated in the air compression part 143 of the annular body 141, and uniformly through each outlet 144. It is induced to form a single discharge air stream.

On the other hand, since the air compression unit 143 in the annular body 141 is formed as an annular space, even if the air supplied from the vacuum motor 132 is partially non-uniformly supplied, a flow circulating along the air compression unit 143 occurs. While a uniform compressed air flow is formed inside the air compression unit 143 , when discharged through the discharge port 144 , it is converted into a uniform discharge air flow.

Inside the upper surface of the annular body 141, a first guide surface 145a for guiding the air discharged through the outlet 144 to the inside of the duct 111 while in contact with the upper end of the duct 111 is the duct 111. It is formed in the circumferential direction in the form of a downward slope toward. The inner end of the first guide surface 145a may have the same diameter as the diameter of the upper end of the duct 111 , and may be integrally formed with the upper end of the duct 111 .

The outer side wall 142 of the annular body 141 is formed to have a relatively protruding height than the discharge port 144 , and an air guide part 146 is provided on the outer side wall 142 of the annular body 141 .

The air guide part 146 is exposed on the case body 100, and includes an annular guide plate 146a for guiding the air discharged from the annular body 141 through the outlet 144 to the inside of the duct 111. .

The annular guide plate 146a is located on the first guide surface 145a, and the injection port 147 is formed by the gap between the first guide surface 145a and the air discharged through the discharge port 144. A second guide surface 145b for guiding air to the injection hole 147 by providing a passage together with the first guide surface 145a is provided. The second guide surface 145b is formed inside the annular guide plate 146a in a downwardly inclined shape than the inclination angle of the first guide surface 145a.

The first guide surface 145a and the second guide surface 145b are inclined downwardly toward the inside of the duct 111 to guide the supplied air, and the first guide surface 145a and the second guide surface 145b are formed. The air guide surface 145 including to provide

As described above, in the air guide surface 145, the first guide surface 145a and the second guide surface 145b are formed to be inclined downward toward the duct 111. The exit side cross section is formed to be relatively narrow.

Therefore, since the air has a cross-section that decreases in width toward the outlet side of the air guide surface 145, that is, the injection hole 147, when the air passes through the injection hole 147, the air by the venturi effect As the pressure of the air decreases relatively, the flow velocity of the air increases, resulting in an increase in the injection velocity.

Therefore, the air is sprayed 360 degrees downward from the injection hole 147 formed on the circumferential surface of the duct 111 of the umbrella input unit 110 in all directions, it is possible to quickly remove the rainwater on the umbrella.

When the control unit detects that the umbrella is put into the umbrella input unit 110 by the umbrella detection sensor 150, the control unit controls the air supply unit 130 so that air is injected through the air injection unit 140, and the umbrella When the detection sensor 150 detects that the umbrella is discharged from the umbrella input unit 110 , it is controlled to stop the operation of the air supply unit 130 .

Hereinafter, the operation of the rainwater removal device of the umbrella using the jet blade technology according to the present invention will be described.

The rainwater removal device of the umbrella using the jet blade technology basically detects the umbrella when it is put into the duct 111 provided on the upper surface of the umbrella input unit 110 in the folded state while the power is connected to the power source 160 . The sensor 150 detects this.

When the umbrella detection sensor 150 detects the input of the umbrella, the sensed signal is transmitted to the general control unit, and the control unit transmits a control signal to operate the air supply unit 130 .

When the vacuum motor 132 of the air supply unit 130 that receives the control signal from the control unit operates, the impeller rotates, and the air generated by the rotation of the impeller moves to the motor housing 133, and the motor The air supplied to the air injection unit 140 through the air supply line 134 by the air pressure in the housing 133 is injected into the umbrella injected into the duct 111 through the injection port 147 .

At this time, the user increases the contact area of air while moving the umbrella put into the umbrella input unit 110 in the vertical direction. At this time, the air injected from the injection port 147 by the venturi effect is injected at a high speed.

The sprayed air drops the rainwater attached to the umbrella downward, and even when the umbrella is removed from the umbrella input unit 110 , it is sprayed on the entire surface of the umbrella, so that the rainwater can be completely removed. At this time, the air discharged from the injection port 147 of the duct 111 flows rapidly into the gap generated between the umbrellas accommodated in the inner space of the duct 111 . As such, since the air discharged from the injection hole 147 flows between the umbrellas at a high speed and drops the rainwater from the umbrella, the venturi effect can be achieved not only in the injection hole 147 but also in the inner space of the duct 111 .

Rainwater drained down the duct 111 is stored in the rain gutter 121 through the drain hole 122a formed in the blocking partition 122 under the duct 111, and the air is stored in the bottom panel of the case body 100. It is exhausted to the outside through the exhaust port 180 of 101.

Accordingly, since the air injected into the duct 111 is quickly exhausted through the exhaust port 180 , rainwater may also flow smoothly downward of the duct 111 .

The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

100: case body 110: umbrella inlet
120: rainwater discharge unit 130: air supply unit
140: air injection unit 141: annular body
142: outer side wall 143: air compression unit
144: outlet 145: air guide surface
145a: first guide surface 145b: second guide surface
146: air guide part 146a: guide plate
150: umbrella detection sensor

Claims (8)

case body;
an umbrella input unit including a duct installed to be exposed to the outside of the case body;
an air supply unit installed inside the case body and configured to supply compressed air to the umbrella input unit;
an air injection unit in which compressed air supplied from the air supply unit is injected through an injection port formed along the circumference of the duct; and,
It is installed at the lower end of the umbrella input unit and includes a rainwater discharge unit for discharging water dropped from the umbrella,
The air injection unit may include: an annular body formed on a path of the compressed air flow provided by the air supply unit and stagnating the compressed air flow to induce a uniform discharge airflow; and
It is formed to be inclined downwardly toward the inside of the duct and has a cross-section that decreases in width toward the injection port, and includes an air guide surface for guiding the compressed air discharged from the annular body to the injection port and injecting it,
The annular body extends annularly around the upper periphery of the duct, a plurality of discharge ports are formed at equal intervals along the circumferential direction on the upper surface, and the air supply line is connected to the lower surface so that compressed air is supplied from the air supply unit, the circumference An annular air compression part formed between the outer side wall and the duct by an outer side wall extending annularly along
It is formed inside the upper surface of the annular body, contacts the upper end of the duct, extends in the circumferential direction along the upper surface of the annular body, and includes a first guide surface for guiding compressed air discharged through the outlet into the duct. and
Compressed air extending from the outer sidewall in a direction parallel to the upper surface of the annular body in which the discharge port is formed, exposed on the case body and forming a uniform discharge air flow discharged through each of the discharge ports, is guided into the duct. annular guide plate; and
It is disposed on the first guide surface and the injection hole is formed by a gap between the first guide surface and the injection hole by providing a passage together with the first guide surface to the compressed air discharged through the discharge hole. Further comprising an air guide portion forming a second guide surface for guiding the compressed air,
With the upper surface of the annular body formed with the plurality of outlets as a boundary, a space below the outlet defined by the air compression part surrounded by the annular body on the lower side, and the annular guide plate, the air guide surface, and the annular body on the upper side The space above the outlet surrounded by the outer side wall is divided,
The compressed air supplied to the space below the discharge port is primarily stagnated in the space below the discharge port divided by the upper surface of the annular body to form a uniform discharge airflow through the plurality of discharge ports - the space below the discharge port Even if compressed air is non-uniformly supplied to the air conditioner, a circulating flow occurs in the space below the discharge port, and a uniform compressed air flow is formed in the space below the discharge port, and when discharged through the plurality of discharge ports, it is converted into a uniform discharge air flow -,
The discharge airflow passing through the plurality of discharge ports and entering the upper space of the discharge port is secondarily stagnant in the upper space of the discharge port divided by the upper surface of the annular body, the first guide surface and the second guide surface The rainwater removal device of the umbrella using the jet blade technology, characterized in that it is discharged to the injection port accordingly.
delete delete According to claim 1,
The injection hole is formed along the inner circumference of the duct between the first guide surface and the second guide surface,
The second guide surface is a rainwater removal device of an umbrella using a jet blade technology, characterized in that formed to be inclined more downward than the inclination angle of the first guide surface.
According to claim 1,
Installed on the upper side of the duct inlet of the umbrella inlet, the umbrella rainwater removal device using a jet blade technology, characterized in that it comprises an umbrella detection sensor for detecting that the umbrella is put in and discharged into the umbrella inlet.
According to claim 1,
The rainwater discharge unit may include: a blocking barrier that blocks a lower portion of the duct and has a plurality of drain holes; and
Rainwater removal device of an umbrella using a jet blade technology, characterized in that it comprises a rain gutter for collecting rainwater dropped from the umbrella in the lower part of the blocking partition wall.
7. The method of claim 6,
An opening having an accommodation space is formed at the lower end of the duct on any side of the case body,
Rainwater removal device of an umbrella using a jet blade technology, characterized in that the rain gutter is detachably accommodated in the receiving space of the opening.
According to claim 1,
The air supply unit,
A support frame having a layered structure is installed inside the case body to support each vacuum motor assembly,
The vacuum motor assembly may include a vacuum motor for driving the impeller;
a motor housing filled with compressed air sucked in by the impeller; and
Rainwater removal device of an umbrella using a jet blade technology, characterized in that it includes an air supply line that is connected to the motor housing and serves as a passage for supplying the compressed air to the air injection unit.

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