KR102592791B1 - Cooling device for a outdoor power enclosure - Google Patents

Abstract

The present invention relates to a cooling device for an outdoor power box, comprising an outdoor power box main body in which an airflow is formed from the inner front to the inner back by a blower to cool the internal power devices, and a front portion of the outdoor power box main body. It is installed with a cover part that is open on both sides, and a side that is installed on both open sides of the cover part to remove moisture and dust when outside air flows into the space between the cover part and the outdoor power box main body by the blower. It may include a filter unit and a rear filter unit installed on the back of the outdoor power box main body to block external moisture and dust from flowing into the outdoor power box main body.

Description

Cooling device for an outdoor power enclosure}

The present invention relates to a cooling device for an outdoor power box, and more specifically, to a cooling device for an outdoor power box that improves ease of maintenance and management.

Recently, with the development of the renewable energy industry such as solar power generation, the number of outdoor boxes installed outdoors to protect power devices is increasing. For example, inverters (power conversion), ESS, etc.

Because power devices are sensitive to moisture and dust, outdoor boxes must maintain specified waterproof and dustproof ratings.

In other words, airtightness must be increased to properly block moisture or dust from entering the interior.

However, improving the airtightness for waterproofing and dustproofing among the functions of the outdoor box causes problems in that heat exchange with the outside air becomes difficult and proper dissipation of heat emitted from power equipment becomes difficult.

In consideration of these problems, there is a need for outdoor power boxes to be designed to improve heat dissipation characteristics along with improved waterproof and dustproof characteristics. In particular, it is not easy to design because it must have heat dissipation characteristics, which are expressed by technical characteristics opposite to waterproof and dustproof characteristics.

Japanese Patent No. 6345579 (registered on June 1, 2018) describes a power conditioner using a heat exchanger. That is, in order to increase airtightness and improve heat dissipation characteristics, the air inside the outdoor box is circulated inside the heat exchanger and is brought into contact with the outside air across the heat dissipation member, thereby dissipating heat.

However, this method has the problem that the volume of the outdoor box increases with the use of the heat exchanger, and the heat dissipation efficiency is relatively low because heat exchange occurs limitedly only in the heat exchanger.

In addition, because the closed method is used, there is a problem in that the vibration generated by the circulation fan used in the heat exchanger is transmitted directly to the outdoor box, and noise is generated accordingly.

The problem to be solved by the present invention in consideration of the above problems is to provide a cooling device for an outdoor power box that satisfies waterproof and dustproof ratings while having an open structure for the outdoor power box.

Another object of the present invention is to provide a cooling device for an outdoor power box that uses an open structure to increase heat dissipation efficiency, reduce vibration and noise, and facilitate maintenance and replacement of filters to ensure waterproof and dustproof levels.

The cooling device for an outdoor power box of the present invention to solve the above technical problem includes an outdoor power box main body in which an airflow is formed from the inner front to the inner back by a blower to cool the electric power devices inside, and the outdoor power box. It is installed on the front part of the box main body and has both sides open, and is installed on both open sides of the cover part so that when outdoor air flows into the space between the cover part and the outdoor power box main body by the blower, moisture It may include a side filter device that removes dust and dirt, and a rear filter device that is installed on the back of the outdoor power box main body to block external moisture and dust from flowing into the outdoor power box main body.

In an embodiment of the present invention, the side filter device part may be extended and installed to the outdoor power box main body, including the side surface of the cover part.

In an embodiment of the present invention, the side filter device portion and the rear filter device portion include a filter between a window frame that can be opened and closed through a hinge portion, a plurality of vanes disposed up and down in the opening of the window frame, and a rear surface of the window frame. It may include a support frame for fixing and supporting, and a fixing part for fixing the window frame to the support frame.

In an embodiment of the present invention, the support frame includes a bent portion bent toward the back of the filter, and the bent portion is further provided with packing that is in close contact with the rear edge of the filter when the window frame is fixed to the support frame. It can be included.

In an embodiment of the present invention, a plurality of the vanes are arranged up and down at predetermined intervals, but the outer height may be inclined in a lower direction so that the gap between the vanes is not exposed on the outside in the horizontal direction.

The present invention uses an open structure that introduces outside air through the front side of an outdoor power box, cools the built-in power equipment, and exhausts it to the outside through the back, thereby increasing heat dissipation efficiency and reducing the generation of vibration and noise. There is a possible effect.

In addition, the present invention achieves waterproof and dustproof levels by adding a filter device to the front side where outside air flows in and the rear side to discharge heat-exchanged air. In particular, the filter device has a structure that allows easy filter replacement, It has the effect of being easy to maintain and manage.

1 is a schematic plan view of an outdoor power box cooling device according to a preferred embodiment of the present invention.
Figures 2 and 3 are a perspective view and a side view of the side filter device, respectively.
Figure 4 is a perspective view of another embodiment of the present invention.
Figure 5 is another cross-sectional configuration diagram of a vane applied to the present invention.

In order to fully understand the configuration and effects of the present invention, preferred embodiments of the present invention will be described with reference to the attached drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various forms and various changes can be made. However, the description of this embodiment is provided to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the present invention of the scope of the invention. In the attached drawings, components are shown enlarged in size for convenience of explanation, and the proportions of each component may be exaggerated or reduced.

Terms such as 'first' and 'second' may be used to describe various components, but the components should not be limited by the above terms. The above terms may be used only for the purpose of distinguishing one component from another. For example, the 'first component' may be named 'the second component' without departing from the scope of the present invention, and similarly, the 'second component' may also be named 'the first component'. You can. Additionally, singular expressions include plural expressions, unless the context clearly dictates otherwise. Unless otherwise defined, terms used in the embodiments of the present invention may be interpreted as meanings commonly known to those skilled in the art.

Hereinafter, a cooling device for an outdoor power box according to an embodiment of the present invention will be described in detail with reference to the drawings.

1 is a plan view of an outdoor power box cooling device according to a preferred embodiment of the present invention.

Referring to FIG. 1, a cover portion 20 is installed at a predetermined space on the front side of the outdoor power box main body 10, and is formed on a part of the outdoor power box main body 10 and includes an outdoor power box main body 10. ) and a plurality of blowers 50 that form an airflow from the front to the back of the cover part 20, and are installed on both sides of the cover part 20 to form an airflow by the blowers 50, forming a cover part 20 and an outdoor power box. A side filter unit 30 is formed on the back of the outdoor power box main body 10, which filters moisture and dust from the air flowing into the space between the front parts of the main body 10, so that moisture and dust from the outside are removed from the outdoor power box. It is configured to include a back filter device unit 40 that blocks inflow into the box main body 10.

Hereinafter, the configuration and operation of the cooling device for an outdoor power box according to a preferred embodiment of the present invention configured as described above will be described in more detail.

First, the outdoor power box main body 10 is such that power equipment is mounted in the internal space 11, and at least the through hole is provided in each of the front and rear parts. The power device accommodated in the outdoor power box main body 10 may be a PEBB (Power Electronic Building Block), a key component of the PCS for ESS. In addition, it may be a simple power conversion inverter, a direct current or alternating current circuit breaker, etc., and the present invention is intended to be applied regardless of the type of power device accommodated in the outdoor power box main body 10.

A cover portion 20 is coupled to the front portion of the outdoor power box main body 10. The cover portion 20 has a front surface substantially the same size as the front area of the outdoor power box main body 10, and the top, bottom, and sides maintain airtightness with the top, bottom, and sides of the outdoor power box main body 10. It is assumed that they are combined into one state.

Accordingly, a space 21 having a predetermined width is formed between the front part of the outdoor power box main body 10 and the cover part 20.

A side filter unit 30 is coupled to the side of the cover unit 20, allowing air to flow into the space 21 from the outside and blocking moisture and dust from entering.

Figure 2 is a perspective view of the side filter device unit 30, and Figure 3 is a side configuration diagram of the side filter device unit 30.

Referring to FIGS. 2 and 3, respectively, the side filter device unit 30 is installed in the horizontal direction of the window frame 31 and the opening of the window frame 31, and is installed to be spaced apart from each other at a predetermined distance up and down, and is installed on the outside. A plurality of vanes 32 whose height is inclined in a lower direction, a hinge portion 33 installed on one side of the window frame 31 to open and close the window frame 31, and the hinge portion A fixing part 34 is formed on the side of the window frame 31 opposite to (33) and fixes the window frame 31 in a closed state, and is fixed to the side of the cover part 20, so that the window frame 31 ) is configured to include a support frame 36 that supports the window frame 33 so that it can be opened and closed, and provides a space for the filter 35 to be located between the window frame 31.

The support frame 36 can be fixed to the outdoor box by welding or bolting.

In the configuration of the side filter device unit 30 above, the shape of the support frame 36 includes a frame unit 36a having the same shape as the window frame 31, and extending from the upper and lower rear surfaces of the frame unit 36a to the rear side. It may be configured to protrude and include a plurality of bent portions 36b whose ends are bent to face each other.

The filter 35 is disposed in the space between the frame portion 36a and the bent portion 36b.

Additionally, the bent portion 36b may further include packing 36c that supports a portion of the rear surface of the filter 35. The packing 36c maintains airtightness with the filter 35 and serves to block air from entering through the outside of the filter 35.

The hinge portion 33 is located between the frame portion 36a of the support frame 36 and the window frame 31, and has a structure in which the window frame 31 can be opened or closed around the hinge portion 33. to provide.

In addition, the fixing part 34 is a fastening means such as a bolt, and is fastened with the window frame 31 on the opposite side of the hinge part 33 and the frame part 36a of the support frame 36 in contact with each other, so that the window frame 31 ) is fixed.

By fixing at this time, the filter 35 is in close contact with the packing 36c and maintains airtightness.

This structure allows workers to easily open the window frame 31 and replace the filter 35, making maintenance and repairs relatively easy.

A plurality of vanes 32 are disposed vertically in the central opening of the window frame 31.

Each of the vanes 32 is bar-shaped, and in order to prevent moisture from flowing into the space 21 from the outside, the height of the part exposed to the outside is lower than the height of the side of the space 21. It is installed as inclined as possible.

That is, the arrangement of the vanes 32 is such that there is a gap between at least a plurality of vanes 32, but they overlap each other so that the gap is not visible when viewed from the outside.

Due to the configuration of the side filter device unit 30, the outside air flows through the filters 35 installed on both sides of the cover unit 20 by the operation of the blower 50 into the inner space of the cover unit 20 ( 21), and the shape of the vane 32 prevents moisture from entering, and the filter 35 prevents moisture and dust from flowing into the space 21.

Referring again to FIG. 1, the drawing shows that the blower 50 is disposed on the front part of the outdoor power box main body 10, but the position of the blower 50 is not limited, but the flow of air for cooling is It must be formed from the front part of the outdoor power box main body 10 to the back part.

The airflow formed within the outdoor power box main body 10 exchanges heat as it passes between components of the power equipment, and is discharged to the outside through the back filter unit 40 located on the back.

The temperature of air heat exchanged with power equipment increases, making it easy to exhaust upward. However, the present invention is applied to an outdoor power box, and exhausting air through the back is more advantageous in securing waterproof and dustproof ratings.

The rear filter unit 40 may be configured to include a window frame, a support frame, a hinge unit, etc., in the same manner as the side filter unit 30 of the present invention described above.

In addition, since the back filter unit 40 discharges an airflow in which dust has been filtered compared to the side filter unit 30, it does not require relatively frequent replacement, so a fixed filter can be applied.

Although the rear filter device unit 40 can be omitted, the blower 50 of the present invention does not operate at all times and can only operate when heat dissipation of the power equipment is required, and when the blower 50 is not in operation. If the back filter device 40 is omitted, external moisture or dust may flow into the back, and it is desirable to install the back filter device 40 to prevent this.

With this configuration, the present invention uses a structure in which the side of the cover part 20 and the front and rear parts of the outdoor power box main body 10 are open, thereby increasing heat dissipation efficiency, and the side filter device part 30 ) and the shape and action of the back filter device unit 40 can ensure waterproof and dustproof ratings.

Therefore, the open structure has the feature of relatively reducing vibration and noise and increasing the degree of integration compared to the conventional method using a heat exchanger.

Figure 4 is a perspective view of a cooling device for an outdoor power box according to another embodiment of the present invention.

Referring to FIG. 4, the side filter device unit 30 may be located not only on the side of the cover unit 20 but also on the side of the outdoor power box main body 10.

At this time, the side of the outdoor power box main body 10 may be partially or fully open, but at least the outside air is introduced from the side by the blower 50 and is exhausted through the back of the outdoor power box main body 10. .

Figure 5 is a cross-sectional configuration diagram of another embodiment of the vane 32 applied to the present invention.

Previously, the vane 32 was described as having an inclined bar-shaped structure, but the present invention proposes a shape of the vane 32 suitable for increasing the waterproofing and dustproofing effect.

Referring to Figure 5, the vane 32 includes an upper horizontal bar (32a) and a lower horizontal bar (32c), and an inclined connection connecting adjacent surfaces of the upper horizontal bar (32a) and the lower horizontal bar (32c) to each other. It is configured to include a bar (32b).

Both ends of the vane 32 are respectively coupled and fixed to both sides of the opening of the window frame 31, and the upper horizontal bar 32a is located on the inner side of the window frame 31 toward the inner space 21, and the lower The horizontal bar 32c is coupled to an outward position on the side of the window frame 31.

Accordingly, the inclined connecting bar 32b has a downward slope as it goes outward, and connects the upper horizontal bar 32a and the lower horizontal bar 32c.

In addition, each of the vanes 32 arranged up and down has the height of the upper horizontal bar of the vane placed at the bottom higher than the height of the lower horizontal bar of the vane placed at the top, so that A is the direction viewed horizontally from the outside. The gap between the vanes 32 in this direction becomes invisible.

Therefore, the present invention ensures waterproofing and dustproofing effects and facilitates the dissipation of heat.

Although embodiments according to the present invention have been described above, they are merely illustrative, and those skilled in the art will understand that various modifications and equivalent scope of embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the following claims.

10: Outdoor power box main body 20: Cover part
30: Side filter device 31: Window frame
32: Vane 33: Hinge portion
34: Fixing part 35: Filter
36: Support frame 40: Back filter device part
50:Blower

Claims (5)

An outdoor power box main body in which an airflow is formed from the inside front to the inside back by a blower to cool the power devices inside;
A cover portion installed on the front of the outdoor power box main body and open on both sides;
A side filter unit installed on both open sides of the cover unit to remove moisture and dust when outside air flows into the space between the cover unit and the outdoor power box main body by the blower; and
It includes a rear filter device installed on the back of the outdoor power box main body to block external moisture and dust from flowing into the outdoor power box main body,
The side filter device or the back filter device,
A window frame that can be opened and closed through a hinge portion;
A plurality of vanes disposed vertically in the opening of the window frame;
A support frame for fixing and supporting the filter between the back surfaces of the window frames; and
Includes a fixing part for fixing the window frame to the support frame,
The support frame is,
It includes a bent portion bent toward the back of the filter,
A cooling device for an outdoor power box including packing in the bent portion that is in close contact with the rear edge of the filter when the window frame is fixed to the support frame. According to paragraph 1,
The side filter device unit,
A cooling device for an outdoor power box, characterized in that it is installed extended to the main body of the outdoor power box, including a side surface of the cover part. delete delete According to paragraph 1,
The vane is,
The majority are arranged up and down at predetermined intervals,
A cooling device for an outdoor power box, characterized in that the outer height is inclined in a lower direction so that the gap between vanes is not exposed on the horizontal outer side.

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