JPS5887897A - Sealed cubicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention-1 relates to a closed cubicle, 'I'j? The present invention relates to a closed cubicle suitable for installation in the driving guide of It vehicles.

Recently, closed cubicles have been considered in order to eliminate cleaning and maintenance within the cubicle.

To explain this with reference to FIG. 1, the closed cubicle 1 stores electronic components 3 such as A'I'C devices in a box frame 2, and as a result of this storage, the front panel 3P of each electronic component 3 is attached to the box frame. The airtightness is maintained by blocking the storage opening 2. An outside air penetration pipe 5 is provided at the top of the box body 2.
The heat exchanger 4 provided with the heat exchanger 4 is attached to facilitate attachment and detachment of the heat exchanger 4 during manufacturing and maintenance. The air inside the box frame 2 is circulated by the inside air nozzle 6 provided above as shown by the wing arrow, and as it passes around the outside air penetration pipe 5, it is cooled by heat exchange with the outside air shown by the chain arrow. .

By the way, this closed cubicle 1 is placed on the left and right sides of the door 8 of the driver's cab 7, as shown in FIG.
The interior of the operator's cab 7 is narrow, and the heat exchanger 4 is placed close to the ceiling 9. For this reason, even if the heat exchanger 4 is configured to be detachable, attaching and detaching it is actually troublesome, and maintenance and inspection of the heat exchanger 4 requires a great deal of effort and time, making it difficult to put it into practical use. It wasn't.

The present invention has been made in view of the above points, and its object is to provide a closed cubicle in which a heat exchanger can be easily attached and detached even in a narrow installation space.

In order to achieve the above object, the present invention has a heat exchange unit installed in a drawer type in a box frame, and an outside air passage that forms a part of the outside air flow path in this heat exchange unit, and an outside air passage that intersects with the outside air passage. The reason lies in the formation of an internal air passage that forms a part of the internal air circulation path.

An embodiment of the present invention will be described below with reference to FIGS. 3 to 8.

The closed cubicle 10 can be roughly divided into a box frame 11,
It is comprised of a heat exchange unit 16 housed within the box frame 11 and an internal air circulation duct 30 formed on the side surface of the box frame 11.

A plurality of shelves 12 are vertically provided inside the box frame 11, and electronic components 13 are stored in each shelf 12 in a drawer style, and the front panel 14 of each electronic component 13 closes the storage opening. By doing so, the box frame 11 is hermetically sealed. An opening is formed in the lowermost front part of the cut box frame 11,
It is always sealed with a cover 15. On the other hand, a heat exchange unit 16 is housed in a drawer type on a shelf 12 at the top of the box frame 11, and a front panel 17 closes a storage opening on the front side of the box frame 11.

The front panel 17 of the heat exchange unit 16 is formed with an intake port 17M for introducing outside air, and a wire mesh 17M is formed inside the intake port 17M.
8 is posted. There is a popular room R on the inside beyond the wire mesh 18.
1 is formed, and a plurality of cooling pipes 19 are connected from this popular room R1.
is extended and opened to the exhaust chamber R2 located on the depth side of the box frame 11.

An outside air circulation fan 20 is provided in this exhaust chamber R2,
This allows outside air to be introduced and exhausted. Further, an internal air circulation fan 21 is provided above the cooling pipe 19 so as to be perpendicular to the outside air circulation fan 20, thereby forming the heat exchange unit 16.

When such a heat exchange unit 16 is housed in the box frame 11, the exhaust chamber R2, which is the inner end thereof, faces the partition wall 22, which is a part of the box frame 11, with a slight gap. This partition wall 2
A vent hole 23 is bored in the exhaust chamber R111, and a backing 33 that fills the gap surrounds the vent hole 23.
1! l or partition wall 221 rule. Outside the box frame of the vent 23 is an exhaust air guide 24 that opens upward.
is formed.

On the other hand, inside air communication ports 25 and 26 are provided at a position above the heat exchange unit 16 and below the lowest electronic component 13 on the side surface of the box frame 11, respectively, and at the bottom where the inside air communication port 26 is provided. A wiring chamber 27 is provided in the space below the electronic component, and a wiring connector 29 supported by one wiring board 28 is provided.

Further, a wiring duct 30 with a cover 31 is formed in the box frame 11 so as to simultaneously surround the inside air communication ports 25 and 26, and serves as an inside air circulation duct 32.

In addition, connectors 34 are provided on the front panel 14 of each electronic component 13 and the front panel 17 of the heat exchange unit 16. Wiring 35 from each connector 34 is connected to each other through the wiring duct 30. or connected to the wiring connector 29.

The closed cubicle 10 is constructed as described above. When the closed cubicle 10 is reused, the outside air circulation fan 20 and the inside air circulation fan 21 are operated, so that the inside air is replaced with the outside air as shown by the arrow. flows like a feather arrow.

That is, outside air is supplied through intake port 17M - wire mesh 18 - popular room R1 - cooling room 19 - exhaust room R2 - outside air distribution fan 20 - vent 2
3- Freeing the outside air flow path consisting of the exhaust nozzle 24.

On the other hand, inside the box frame 11 in which electronic components 13 are housed - cooling pipe 19rFI'J - inside air circulation fan 21 - inside air communication port 25 - inside air circulation duct 32 - inside air communication day 26 - wiring room 2
7- Circulate inside air through a circulation path formed within the box frame 11 in which electronic components 13 are housed.

Then, when the internal air that cools the electronic components 13 and is supplied to the outside world passes between the cooling pipes 19, it is cooled by the external air.

With the above structure, the heat exchange unit 16 can be easily attached and detached in a drawer style, and there is no problem even if the top of the closed cubicle 10 is close to the ceiling of the operating room.

Moreover, since the heat exchange unit 16 is provided with a passage where outside air and inside air intersect, there is no need to complicate the box frame if.

Furthermore, since each fan is housed in the same unit 1G,
Maintenance work can be centralized, and the troublesome work of attaching and detaching each fan, which is conventional, can be omitted.

By the way, in the above embodiment, outside air is exhausted toward the ceiling, but the ceiling is +11! If exhaust to + is not desired, the heat exchange unit 16 may be housed below the box frame 11 and the air extraction port 37 may be opened on the side surface of the box frame 11, as shown in FIGS. 9 and 10.

That is, the wiring room 27 located below the closed cubicle 10
A heat exchange unit 1G is housed in the upper part of the box frame 11, and a vent 36 corresponding to the vent 23 in FIG. It was installed on the side of 11 or on the floor of the vehicle. Note that the internal air circulation path is the same as in the previous embodiment.

With this configuration, outside air flows as shown by arrow A and inside air flows as shown by arrow B, and the cooling effect is the same as in the previous embodiment. In addition, the relatively heavy heat exchanger unit 16 can be attached and detached from the lower part, making the operation easier.

By the way, each of the above embodiments is applied to a closed cubicle installed in the driver's cab of a vehicle, but it can also be applied to a closed cubicle installed indoors other than in a vehicle. This is advantageous if it is in contact with the ceiling. Further, if a space can be provided on the back side, the exhaust port of the heat exchange unit can be provided directly on the back side of the cubicle, so the heat exchange unit can be installed on any shelf of the box frame.

As described above, according to the present invention, it is possible to provide a closed cubicle in which a heat exchanger can be easily attached and detached even in a narrow installation space (9).

[Brief explanation of drawings]

FIG. 1 is a schematic longitudinal sectional side view showing the main parts of a conventional closed cubicle, FIG. 2 is a front view showing the arrangement of the closed cubicle, and FIG. 3 is an embodiment of the closed cubicle according to the present invention. A perspective view, FIG. 4 is a cross-sectional view taken along line II in FIG. 3, FIG. 5 is a cross-sectional view taken along line ■-■ in FIG. , Figure 7 is Figure 3 I
8 is a partially cutaway perspective view showing a heat exchange unit housed in a closed cubicle according to the present invention, and FIG. 9 is a partially cutaway view showing another embodiment of the present invention. 1, 11... box frame, 13... electronic components 116... heat exchange unit,
20...Outside air circulation fan, 21...Inside air circulation fan (1
0) -468- Figure 6 29 z6 10th country

Claims (1)

[Claims] ■. A sealed box, a heat-generating electrical device housed in the box, an internal air circulation path for circulating air within the box to cool the heat-generating electrical device, and In a closed cubicle comprising an inside air circulation fan provided in a part of the inside air circulation path, an outside air flow path adjacent to the inside air circulation path, and an outside air circulation fan that circulates outside air through the outside air flow path, A heat exchange unit is installed in a drawer type, and an outside air passage forming a part of the outside air flow path intersects with the outside air passage and forming a part of the inside air circulation path in the heat exchange unit i. A closed cubicle characterized by forming an internal airway. 2. A closed cubicle according to claim 1, wherein the heat exchange unit includes a front internal air circulation fan and the outside air circulation fan. 3. A closed cubicle according to claim 1, wherein the heat exchange unit is located above the heat generating electrical equipment. 4. A closed cubicle according to claim 1, wherein the heat exchanger unit is located below the heat generating electrical equipment. 5. A sealed box, heat-generating electrical equipment housed within the box, an internal air circulation path that circulates air within the box to cool the heat-generating electrical equipment, and a portion of this internal air circulation path. In a closed cubicle comprising an inside air circulation fan provided in the outside air circulation path, an outside air flow path adjacent to the inside air circulation path, and an outside air circulation fan that circulates outside air through the outside air flow path, forming a part of the outside air flow path. A heat exchange unit comprising an outside air passage and an inside air passage that intersects with the outside air passage and forms a part of the inside air circulation passage is provided, and this heat exchange unit is installed in the box body in a drawer manner. A closed cubicle, characterized in that an inside air circulation duct is provided to constitute a part of the inside air circulation path.