JP3749384B2 - Heat exchanger - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat exchanger that is used by being mounted on a control panel of an electronic device. In particular, even when oil mist made of fine particles of lubricating oil enters the control panel or the like, the oil mist can be smoothly removed. The present invention relates to a heat exchanger that can be collected and discharged outside the control panel.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, heat exchangers having various structures are attached to a ceiling of an electronic device control panel or the like. These heat exchangers only forcedly convect the oil mist that has entered the control panel with a fan, so that the oil mist grows while adhering to the finger guards in the control panel, and finally the oil mist grows. There were problems such as causing a short circuit accident by dropping onto the electronic component as a droplet.
[0003]
Further, for example, as in a heat exchange device disclosed in JP-A-1-140944, oil mist that has entered the heat exchange device is discharged outward so that the oil mist does not enter the control panel. A heat exchange device is known.
[0004]
That is, the structure of this heat exchange device is divided into two parts by an inclined partition plate inside the heat exchange device to form a first space and a second space, and a drain is provided below the inclined partition plate. This is the structure provided. Then, the air in the control panel flows into one of the first spaces, the air outside the control device flows into the other second space to exchange heat, and the oil mist that has entered the second space Oil droplets that have grown while adhering to the inclined partition plate flow down to the drain below using the inclination, and have the effect of discharging to the outside of the heat exchange device.
[0005]
[Problems to be solved by the invention]
However, in the heat exchange device described above, the oil mist mixed in the air outside the control panel that has flowed into the second space is collected by the inclined partition plate and is removed from the heat exchange device. However, it is possible to prevent the oil mist from entering the first space of the heat exchanger or the control panel, but it is possible to collect the oil mist present in the control panel and discharge it to the outside. There was no problem.
[0006]
The heat exchanger according to the present invention is a completely new technology developed in view of the above-mentioned conventional problems, and in particular, oil mist mixed in the air sent from the control panel to the heat exchanger. It provides a completely new heat exchanger technology that enables smooth collection and discharge to the outside.
[0007]
[Means for Solving the Problems]
The heat exchanger according to the present invention is a technology that has fundamentally improved many of the above-mentioned conventional problems, and the gist of the first invention is an external fan that feeds outside air into the case of the heat exchanger, provided at the bottom of the case of the heat exchanger, and an internal fan device for feeding air in the control panel in a case of the heat exchanger, it is housed in the heat exchanger of the case, and the inner case by the external fan The outside air sent to the air and the fins that contact the air sent from the control panel to the case by the internal fan device to exchange heat, and the lower suction port of the internal fan device , planar fingers plurality of slits are bored by the guard, the pressing first filter in which a plurality of slits are bored in the planar, the plurality in planar filter and the planar slits second drilled Filter holder Set the respective lower Rutotomoni is inclined with a predetermined distance in order, the predetermined distance oil droplets can flow down by capillary action the distance finger guard and said first filter presser is interposed therebetween Mounting , configured to provide an oil pan that flows between the finger guard and the first filter holder by capillary action and receives oil droplets falling along a bent piece provided at one end edge of the finger guard . It is a heat exchanger characterized by this.
[0008]
In the heat exchanger according to the first aspect of the present invention, an internal fan device is provided at the bottom of the outer case containing the fins, and a finger guard, a filter presser, a filter presser and a filter presser are respectively attached to the lower suction port of the internal fan device from below. Since it was installed in an inclined manner with a predetermined interval in order, if oil mist is mixed in the air in the control panel that is sucked into the heat exchanger by the internal fan device, it is placed in the lower suction port of the internal fan device. Oil mist can be collected by the provided finger guard and filter holder.
[0009]
And the oil mist collected by these finger guards and filter presses can gradually grow as oil droplets and flow down to a predetermined position using the inclined surfaces of these finger guards and filter presses. I can do it.
[0010]
In addition, since the oil receiver that receives the oil droplets falling along the bent piece provided at one edge of the finger guard is provided, the oil droplets of the oil mist collected by the finger guard and the filter retainer as described above The oil collected in the oil receiver and the oil collected in the oil receiver can be discharged to the outside of the internal fan device through the oil discharger.
[0012]
A second aspect of the heat exchanger according to the present invention is characterized in that a gap between the finger guard attached to the suction port of the internal fan device and the filter holder is 0.2 mm to 3.0 mm . 1 is a heat exchanger according to the invention .
[0013]
In the heat exchanger according to the second aspect of the present invention, the finger guard and the filter retainer are arranged in parallel at the suction port of the internal fan device while maintaining a predetermined range interval, so that the oil adhered to the finger guard and the filter retainer. While collecting mist by capillary action, it can flow down smoothly along the inclined surface.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the heat exchanger according to the present invention will be described in detail with reference to the drawings. FIGS. 1A and 1B are a perspective view and a front view or a side view of the heat exchanger according to the present invention, and FIG. 3 is a perspective explanatory view showing components of the heat exchanger of the invention, FIGS. 3A and 3B are perspective explanatory views showing the structure of the internal fan device of FIG. 1 or a sectional view of the main part, and FIG. 4 is an internal fan device. It is a simple expansion explanatory drawing which shows the state which a capillary phenomenon produces in the inside.
[0015]
In FIG. 1 to FIG. 4, reference numeral 1 denotes a heat exchanger whose outer side is covered with an outer case made up of a case 2 and a transmission board 3. Corrugated fins 4 are accommodated in the heat exchanger 1. The corrugated fins 4 are formed by continuously zigzag-folding aluminum thin plates, and the pitches are provided at intervals of 5 mm. Seal metal fittings 5 are attached to both side ends of the corrugated fin 4 so that the inside and the outside of the corrugated fin 4 are completely sealed.
[0016]
An internal fan device 6 is attached to a part of the bottom of the heat exchanger 1. An external fan 7 is attached to one side of the heat exchanger 1. The internal fan device 6 is a device that sends air in the control panel to the heat exchanger 1, and the external fan 7 is a device that sends outside air to the heat exchanger 1.
[0017]
As shown in FIGS. 2 and 3R> 3 (A), (B), the internal fan device 6 is provided with a fan 9 at the upper part in the outer case 8 and at the lower inlet in the outer case 8. The finger guard 10, the filter holder 11, the filter 12, and the filter holder 13 are provided at predetermined intervals in order from the bottom. Therefore, when the air in the control panel is sent into the heat exchanger 1 by rotating the fan 9 of the internal fan device 6, the air passes through the finger guard 10 provided at the suction port of the internal fan device 6. It is configured to pass.
[0018]
The finger guard 10 and the filter holders 11 and 13 are provided with a plurality of slits 14 that are parallel to each other and have the same pitch. Further, a bent piece 10 a is provided on one end edge of the finger guard 10 below. The finger guard 10, the filter holder 11, the filter 12, and the filter holder 13 are connected to each other by a screw 15, and a spacer 16 is interposed therebetween to maintain a predetermined interval.
[0019]
The distance between the finger guard 10 and the filter retainer 11 is set in advance to a predetermined size so that the liquid 17 interposed between the finger guard 10 and the filter presser 11 can easily flow down quickly by capillary action as shown in FIG. . When the present inventors tested, the dimensions of 0.2 mm to 3.0 mm were effective.
[0020]
Reference numeral 18 denotes an oil receiving rod, which can receive an oil drop falling along the bent piece 10a provided on one end edge of the finger guard 10, and is fitted into the oil discharge hole 18a of the oil receiving rod 18. The oil can be discharged to the outside by the drain hose 19 that is locked.
[0021]
Reference numeral 20 denotes a mounting bracket capable of mounting the internal fan device 6 on the lower bottom surface of the heat exchanger 1. A hole 21 is formed in the lower surface 20a, and the lower surface 20a is inclined. Therefore, when the internal fan device 6 is attached to the lower bottom surface of the heat exchanger 1 via the mounting bracket 20, the internal fan device 6 can be inclined as a whole as shown in FIG. ing.
[0022]
In the heat exchanger according to the present invention, the internal fan device 6 is attached to the bottom surface of the heat exchanger 1 as described above, and the air in the control panel is sent into the heat exchanger 1 by the internal fan device 6. All the air sent from the control panel into the heat exchanger 1 can pass through the internal fan device 6.
[0023]
Since the finger guard 10 having a large number of slits 14 and the filter retainer 11 are arranged in the vertical direction at a predetermined interval in the lower suction port of the internal fan device 6, the inside of the air passing between them The oil mist mixed in can be collected by adhering to the surfaces of the finger guard 10 and the filter holder 11.
[0024]
The oil mist collected by these finger guards 10 and the filter retainers 11 gradually flows downward between the finger guards 10 and the filter retainers 11 by a capillary phenomenon, and flows along the bent pieces 10a. It falls into the receptacle 18 and is discharged to the outside by the drain hose 19.
[0025]
Therefore, by using the heat exchanger 1 according to the present invention, the oil mist that has entered the control panel can be collected very effectively by the internal fan device 6, and the collected oil is discharged to the outside. It is possible to prevent oil mist from entering the heat exchanger 1.
[0026]
【The invention's effect】
Since the heat exchanger according to the present invention has the above-described structure and operation, it has the following great effects.
[0027]
Since the finger guard and the filter retainer are aligned in the vertical direction at a predetermined interval at the suction port of the internal fan device, and the internal fan device is attached to the lower bottom of the heat exchanger, the internal fan device can be Oil mist in the air that passes through and is sent to the heat exchanger can be collected by the finger guard and the filter holder.
[0028]
In addition, since the finger guard and the filter press are respectively provided to be inclined, the oil mist collected by them can be gradually flowed downward. In particular, when the finger guard and the filter retainer are arranged in parallel at a predetermined interval, the liquid made of the oil mist collected by causing capillary action by the finger guard and the filter retainer can flow down very smoothly. .
[0029]
In addition, when an oil receiver such as an oil receiver can be attached to the lowermost part of the internal fan device, an oil collector such as a drain hose is provided. The oil collected in the oil receiver and the oil collected in the oil receiver can be discharged to the outside of the heat exchanger via the oil discharger.
[Brief description of the drawings]
FIGS. 1A and 1B are a perspective view and a front view or a side view of a heat exchanger according to the present invention.
FIG. 2 is a perspective explanatory view showing components of the heat exchanger of the present invention.
3 (A) and 3 (B) are perspective explanatory views showing the configuration of the internal fan device of FIG.
FIG. 4 is a simplified enlarged explanatory view showing a state in which capillary action occurs in the internal fan device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Heat exchanger 2 ... Case 3 ... Transmission board 4 ... Corrugated fin 5 ... Seal metal fitting 6 ... Internal fan apparatus 7 ... External fan 8 ... Outer case 9 ... Fan
10 ... Finger guard
11, 13 ... Filter holder
12 ... Filter
14 ... Slit
15 ... Screw
16 ... Spacer
17 ... Liquid
18… Oil pan
19 ... Drain hose
20 ... Mounting bracket
20a: Bottom surface of mounting bracket
21 ... hole

Claims (2)

An external fan that sends outside air into the heat exchanger case,
An internal fan device that is provided at the bottom of the case of the heat exchanger and feeds air in the control panel into the case of the heat exchanger ;
Heat is generated by contacting the outside air stored in the case of the heat exchanger and sent into the case by the external fan, and the air sent from the control panel to the case by the internal fan device. With fins to exchange ,
Have
The lower suction port of the internal fan device, the finger guard plurality of slits in the surface shape is bored, pressing a first filter having a plurality of slits are bored in the planar plurality in planar filters and surface slit is inclined a second filter retainer drilled from each downward with a predetermined distance in order Rutotomoni, spacing oil droplets interposed therebetween of the finger guard and the first filter presser Set at a predetermined interval that can flow down by capillary action ,
An oil receiver that receives an oil drop that flows down along a bent piece provided at one end edge of the finger guard flows down between the finger guard and the first filter presser by capillary action. A featured heat exchanger. The heat exchanger according to claim 1 , wherein a clearance between the finger guard attached to the suction port of the internal fan device and the filter holder is 0.2 mm to 3.0 mm.

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