JP3383738B2 - control panel - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control panel of a machine tool such as an electric discharge machine or a laser beam machine, and more specifically, the control panel is hermetically sealed in a dustproof manner, and the inside of the dustproof compartment is indirectly cooled. The present invention relates to a control panel of a machine tool including a heat exchanger for operating the machine.

[0002]

2. Description of the Related Art A control panel that is indirectly cooled is a resistor that generates a lot of heat and is environmentally friendly in order to reduce the heat generated in a dustproof compartment and to make a cooling device such as a heat exchanger small and inexpensive.・
Reactors are installed outside the dustproof compartment. As an example of such a conventional control panel, Japanese Unexamined Patent Publication No. Hei 7 (1999) -7
There is one disclosed in Japanese Patent Laid-Open No. 100732.

FIG. 7 shows the above-mentioned conventional example, Japanese Patent Laid-Open No. 7-10.
It is an upper part longitudinal cross-sectional view of the control panel described in Japanese Patent No. 0732.
FIG. 8 is a top view of the portion shown in FIG. In the figure, reference numeral 1 is a housing of a control panel 101, which includes a door 3 on the front surface and a back plate 4 on the rear surface. Reference numeral 2 is a partition wall that partitions the inside of the housing into front and rear. The partition wall 2 divides the interior of the housing 1 into a dustproof compartment 90 having a wide depth and a ventilation compartment 91 having a narrow depth. A heat generating component (not shown) such as a printed circuit board is housed in the dustproof compartment 90.

Reference numeral 5 is a ceiling plate, and a cutout portion 5A is provided in an upper portion of the ventilation compartment 91. Reference numeral 6 denotes a heat transfer plate for heat exchange attached to the back surface of the partition wall 2, which is formed by bending a thin plate into a corrugated shape and forming a plurality of inside air flow passages 92 and outside air flow passages 93 alternately located in the ventilation section 91. Is formed. The upper and lower ends of the inside air flow path 92 are hermetically sealed by the seal fitting 7 and the seal member 8, and the inside air intake port 2A formed in the upper part of the partition wall 2 and the inside air fan (not shown) provided in the lower part. Communicates with.

An exhaust duct 10 is provided above the ceiling plate notch 5A, and includes a rear surface 10A, left and right side surfaces 10B,
It has an upper surface portion 10C. Reference numeral 11 denotes a fan mounting plate arranged so as to laterally partition the inside of the exhaust duct.
The fan mounting plate 11 is provided with a plurality of fan holes 11A, and the outside air fan 50 is mounted from the front side via the screw member 51. The outside air fan 50 is the ceiling plate 5
It is connected to the inside of the board by wiring through a connector 52 that is attached through.

Reference numeral 53 denotes a plurality of power resistors arranged in front of the outside air fan 50, which are fixed to the ceiling plate 5 via the mounting plate 12. The power resistor 53 has a substantially plate-shaped rectangular parallelepiped main body portion 53A and leg portions 53B at both ends in the longitudinal direction, and is fixed to the mounting plate 12 by a screw member 54. In addition, the lead wire 53C pulled out from the end is the connector plug 55.
The wiring is connected to the inside of the panel via the A / connector socket 55B. Reference numeral 13 is a cover with a ventilation port that covers the power resistor 53 portion, and has a ventilation slit 13A on the rear surface and an exhaust slit 13B on the front surface.

The conventional control panel 10 constructed as described above.
The operation of No. 1 will be described. The warmed air in the dustproof compartment 90 by the operation of the inside air fan is sucked into the inside air flow passage 92 of the heat transfer plate 6 as indicated by an arrow a. Outside air fan 5
By the operation of 0, the outside air is taken into the outside air flow passage 93 from the outside air intake port (not shown) formed in the lower portion of the back plate 4 as shown by the arrow b.

By the above-mentioned forced convection in the heat transfer plate 6, heat is exchanged from the inside air to the outside air, and the inside of the dustproof section 90 is indirectly cooled. Further, the exhaust flow from the outside air fan 50 is immediately discharged to the outside b1 and flows through the inside of the cover 13 with a vent hole.
Divide into two. This exhaust flow b2 causes the power resistor 5
3 is forcibly air cooled. Thereby, the cooling fan for the power resistor 53 can be omitted. Also, the exhaust flow b2
Flows partly along the outer surface of the ceiling plate 5. This exhaust flow promotes heat dissipation from the outer surface of the ceiling plate 5.

[0009]

The outside air fan 50 is screwed and fixed to the fan mounting plate 11 from the front side of the control panel 101. However, since it is located behind the front of the board and is located at the highest position on the top of the board, there is a problem that it is difficult to perform the wiring work for mounting the outside air fan 50.
Further, when the outside air fan 50 is replaced due to the end of life, it is necessary to remove the cover 13 with the vent hole and the mounting plate 12 including the power resistor 53 in order to remove the fixing screw 51 on the lower side. It was a cause that could not be easily. Further, when an operation unit such as a CRT or a seat key is arranged on the front surface of the control panel, there is a problem that the exhaust flow of the outside air hits the operator and causes discomfort.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to easily assemble and replace the outside air fan so that the exhaust air of the outside air does not hit the operator and the power resistance is reduced. An object of the present invention is to obtain a control panel that can favorably perform forced air cooling of a heating element such as a container and also improve the heat exchange efficiency of indirect air cooling in the panel.

According to the first aspect of the present invention, the outside air fan is attached to the rear side of the fan mounting plate, and the outside air fan can be easily assembled and replaced from the rear side of the control panel without removing other parts , and the outside air is exhausted to the operator. Prevent from flowing
It is an object of the present invention to provide a can be Ru control panel.

According to a second aspect of the present invention, an exhaust vent is provided in the upper surface of the box-like cover, and a deflector plate extending obliquely upward toward the front is provided in front of the heating element, and a front surface of the control panel is provided. The outside air exhaust flow does not hit the operator located on the side, and the outside air exhaust flow is smoothly deflected along the deflection plate to obtain a control panel that is discharged upward.

According to a third aspect of the present invention, a substantially plate-shaped rectangular parallelepiped power resistor which is a heating element is arranged side by side with its wide side face being vertically arranged in the longitudinal direction, and the front end of the resistor can be inserted. By arranging a deflecting plate having perforations, the length of the exhaust air passage can be reduced, and the air resistance to the outside air exhaust flow that flows through the periphery of the resistor and is discharged upward is reduced to reduce the resistance. An object of the present invention is to obtain a control panel that can cool the vessel well and improve the heat exchange efficiency of the heat transfer plate.

[0014]

A control panel according to a first aspect of the present invention has a front wall and a rear wall partitioned by a partition wall.
A housing in which a ventilation section is formed in the back surface section and a cutout section communicating with the ventilation section is formed in the ceiling plate, and a vertical internal air flow path in which the upper and lower ends are sealed in the ventilation section A heat transfer plate for heat exchange, which is alternately located with the inside air flow path and has an outside air flow path whose upper and lower ends are open, and an outside air fan that covers the upper portion of the cutout and forcibly cools the outside air flow path are arranged. In a control panel having an exhaust duct and a heating element disposed above the ceiling plate, a wall surface is formed on the front front side on the upper surface of the ceiling plate to integrally cover the cutout portion and the heating element. a box-shaped cover exhaust vent is provided on the front side upper surface, the
When the outside air fan is attached to the rear side,
The inside of the box-shaped cover with the fan mounting plate.
The heating element placement part on the one side and the notch communication part on the back side are
By cutting, the ventilation in the communicating part of the notch
The exhaust duct communicating with the compartment is formed, and the exhaust air from the exhaust duct is diverted by the outside air fan to the heating element arrangement portion of the box-shaped cover to be exhausted upward from the exhaust ventilation port. It is a feature.

In the control panel according to the second aspect of the present invention, the exhaust vent of the box-shaped cover is formed in the upper surface of the box-shaped cover, and in front of the heating element, it is obliquely upward toward the front. It is characterized in that an extending deflecting plate is provided.

In the control panel according to the third aspect of the present invention, the heating element arranged in front of the outside air fan includes a plurality of substantially plate-shaped rectangular parallelepiped power resistors, and the resistors are mounted via mounting plates. They are arranged side by side in the longitudinal direction, and are mounted with their wide side faces vertical. The deflection plate extends from the front end of the mounting plate of the resistor, and a fitting into which the resistor can be inserted. A hole is bored, and at least the front end of the resistor is inserted and fixed in the fitting hole.

In the control panel according to the first aspect of the present invention, an exhaust duct is formed above the ventilation compartment by laterally partitioning the inside of the box cover that integrally covers the upper portion of the ventilation compartment and the heating element. Since the outside air fan is attached to the back side of this fan mounting plate, the outside air fan can be installed from the rear side of the control panel without removing other parts.
Easy to replace.

In the control panel according to the second aspect of the present invention, an exhaust vent is provided in the upper surface of the box-shaped cover, and a deflection plate extending obliquely upward toward the front is provided in front of the heating element. Therefore, the outside air exhaust flow does not hit the operator located on the front side of the control panel, and the outside air exhaust flow is smoothly deflected along the deflecting plate and is discharged upward.

In the control panel according to the third aspect of the present invention, the substantially plate-shaped rectangular parallelepiped power resistors, which are heating elements, are arranged side by side with their longitudinal directions forward and backward and their wide side surfaces vertical, and the resistor front end is arranged. Since the deflection plate with a fitting hole that allows insertion of the air flow is fixed to the mounting plate that extends back and forth, the air resistance to the outside air exhaust flow that flows through the periphery of the above resistor and is discharged upward is further reduced. To be done.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. Embodiment 1 of the present invention will be described below with reference to FIGS.
Will be explained. In the figure, reference numeral 102 is a control panel provided with an operation unit 56 on the front door 3. Reference numeral 20 denotes a box-shaped cover screwed and fixed to the upper surface of the ceiling plate 5, and includes a rear surface portion 20A inscribed in the upper end of the back plate 4 and a front surface portion 2 forming a wall surface on the front surface side of the board.
0B, right and left side parts 20C, exhaust slit 20 in the forward direction
It has an upper surface portion 20D in which an exhaust ventilation port made of E is formed.

Reference numeral 21 is a fan mounting plate that laterally partitions the inside of the box-shaped cover 20. An exhaust duct 94 that communicates with the upper portion of the ventilation section 91 is formed by the fan mounting plate 21. The fan mounting plate 21 has a plurality of fan holes 2
1A is provided, and the outside air fan 50 is attached from the back side via the screw member 51. The outside air fan 50
The connector 52 for connecting the wiring to the inside of the board is penetratingly attached to the ceiling plate 5 located in the exhaust duct 94.

Reference numeral 22 is a mounting plate having leg portions 22A on the left and right, and an opening 22B is formed in most of the central portion. The plurality of power resistors 53 are screwed and fixed in the longitudinal direction so as to straddle the opening 22B. The other parts have the same structure as the conventional example, and therefore the description thereof is omitted.

The operation of the control panel 102 constructed as above will be described. First, indirect cooling in the dustproof section 90 by the heat transfer plate 6 is performed in the same manner as in the conventional control panel 101. The exhaust flow from the outside air fan 50 is schematically indicated by arrows b1 to b1.
It is branched to b4 and discharged from the exhaust slit 20E to the upper outside. The exhaust flows b1 to b4 forcibly air-cool the power resistor 53, which is a heating element, and promote heat dissipation from the outer surface of the ceiling plate 5.

The exhaust flows b1 to b4 are blocked by the front portion 20B of the box-shaped cover 20 and do not flow to the front portion of the control panel 102. Therefore, the operator in front of the operation unit 56 does not feel uncomfortable. The outside air fan 50 and the connector 52, which are screwed and fixed to the rear surface side of the fan mounting plate 21, are arranged close to the rear surface side of the control panel 102. Therefore, the wiring can be easily assembled. Further, the replacement can be easily performed by removing the box-shaped cover 20 without being disturbed by other parts such as the power resistor 53 which is a heating element . Further, the cover for the power resistor 53 and the exhaust duct 94
Since the cover for is integrated as the box-shaped cover 20, the cost can be reduced.

Embodiment 2. In the first embodiment, the exhaust flows b2 and b4 shown in FIG.
Collides with the front surface portion 20B of the box-shaped cover 20 and flows upward. For this reason, the air resistance may be large and the wind speed may be reduced to increase the temperature rise in the front portion of the power resistor 53. The second embodiment is to improve the above drawbacks. The second embodiment of the present invention will be described below with reference to FIG. In the figure, reference numeral 23 is a deflection plate disposed in front of the power resistor 53 which is a heating element. The deflection plate 23 has a sloped portion 23A extending over the entire inner width of the box-shaped cover 20.
And a leg portion 23B fixed to the ceiling board 5. The inclined surface portion 23A extends obliquely forward from the ceiling surface 5 and the front surface portion 20B.
And reaches the corner of the upper surface portion 20D. The other parts are configured in the same manner as in the first embodiment, and the description thereof will be omitted.

The exhaust flow from the outside air fan 50 is divided into arrows b1 to b3, which are schematically shown, and is discharged upward from the exhaust slit 20E. The exhaust gas flow b2 on the front side is smoothly deflected upward along the slope 23A. For this reason,
The air resistance is reduced and the wind speed in the exhaust flow b2 portion is not reduced, so that the entire power resistor 53 is cooled well. In addition, the connector 55A
By disposing 55B, it is possible to prevent dust from adhering to the outside air. Further, similar effects can be obtained even when other electric components such as a reactor are appropriately attached to the attachment plate 22 as a heating element.

Embodiment 3. In the second embodiment, the exhaust flow b3 shown in FIG. 3 flows between the juxtaposed power resistors 53 and flows upward. Since the power resistor 53 has a substantially plate-like rectangular parallelepiped shape and is attached with its wide side face horizontal, the gap between the adjacent power resistors 53 becomes narrower as the required number increases, and the air in the exhaust flow b3 portion becomes smaller. The resistance increases. In order to make up for the cooling performance deterioration due to this, a large outside air fan is required, and the fan noise may become a problem. The third embodiment is to improve the above drawbacks.

The third embodiment of the present invention will be described below with reference to FIGS. In the figure, reference numeral 24 is a mounting plate, which has leg portions 24A on the left and right sides, and an opening 24B is formed in almost all of the central portion. Reference numeral 24C denotes a deflection plate portion that extends obliquely upward from the front edge of the mounting plate 24 toward the front, and has a plurality of fitting holes 24D shown in FIG. The substantially plate-shaped rectangular parallelepiped electric power resistors 53 are arranged side by side in the longitudinal direction, and the front end is inserted into the fitting hole 24D with the wide side surface being vertical.
Reference numeral 25 denotes a U-shaped mounting bracket fixed to the rear edge of the mounting plate 24, and the rear end of the power resistor 53 has a screw member 54 on both sides thereof.
It is fixed at. The exhaust slit 20E on the upper surface of the box-shaped cover 20 is bored until it reaches the front surface portion 20B, and a gap d is provided between the upper end (front end) of the deflection plate portion 24C and the front surface portion 20B.
Is provided. The other parts are configured in the same manner as in the second embodiment, and therefore their explanations are omitted.

The exhaust flow from the outside air fan 50 is branched into the arrows b1 to b4 which are schematically shown, and is exhausted upward from the exhaust slit 20E. The exhaust flow b2 flowing forward along the wide side surface of the power resistor 53 is deflected by the deflector plate portion 24C.
Is smoothly deflected upwards along. The exhaust flow b3 entering the lower surface of the mounting plate 24 has a large gap between the adjacent power resistors 53, so that most of the part flows upward from the opening 24B and joins with the exhaust flow b2. Further, the exhaust flow b4 entering the lower side of the deflector plate portion 24C exits through the gap d.

Exhaust flow b exhausted obliquely upward as a whole
With respect to 1 to b3, the space between the adjacent power resistors 53 is wide, and the air flow path having a small air resistance is formed by being smoothly deflected by the deflecting plate portion 24C. Further, since the front end of the power resistor 53 is fitted and fixed in the deflecting plate portion 24C, the assembly is easy and the mounting space in the front-rear direction can be reduced. This shortens the air passage length for the exhaust flows b2 and b3, and reduces the air resistance. Therefore, the power resistor 53 is satisfactorily cooled by the high-speed exhaust gas flow b2 and b3 on both sides of the wide side surface. At the same time, since the pressure loss on the discharge side of the outside air fan 50 is reduced, the heat exchange efficiency by the heat transfer plate 6 can be improved. Further, due to the high-speed exhaust flows b2 and b3, a negative pressure portion is formed at the tip of the deflecting plate portion 24C, and the exhaust flow b4 is sucked and discharged from the gap d without causing stagnation. Further, the power resistor 53
Since they are arranged side by side with their wide sides vertical, they can be arranged in a large number within the box-shaped cover 20, and even in this case the increase in air resistance is small and a large external air fan is not required. Therefore, fan noise does not increase.

The deflecting plate portion 24C may be formed separately from the mounting plate 24, and the U-shaped mounting metal member 25 may be formed in an appropriate shape such as L-shaped for each resistor. Also,
The outside air fan 50 is assembled in the same manner as in the first and second embodiments,
Easy to replace.

[0032]

As is evident from the foregoing description, according to the first aspect of the invention, a box-shaped cover exhaust vents on the front side top cover and the vent compartment upper heating element integrally provided, the Outside air
A fan mounting plate with the fan mounted on the rear side is provided.
, The inside of the box-shaped cover is moved forward by the fan mounting plate.
Partitioned between the heating element arrangement part and the notch communication part on the back side
As a result, the ventilation section is formed in the communication portion of the cutout portion.
In addition to forming an exhaust duct communicating with the exhaust air, the exhaust air from the exhaust duct is diverted by the outside air fan through the heating element arrangement portion of the box-shaped cover to be exhausted upward from the exhaust ventilation port. The outside air fan can be easily assembled and replaced from the rear side of the control panel without removing the parts of the above, and the outside air fan is located on the front side of the control panel for exhausting air from the exhaust duct and cooling the heating element. There is an effect that it is possible to prevent the exhaust air flow of the outside air from hitting the operating operator.

Further, according to the second invention,
Oite, exhaust vents on the upper surface of the box-shaped cover are bored, since prior to the heating body is disposed deflection plate extending obliquely upward toward the front, remove the other components
Install and replace the outside air fan from the rear side of the control panel without
Can be easily performed, and the exhaust air can be exhausted by the external air fan.
For exhaust from ducts and cooling of heating elements
The exhaust flow of outside air hits the operator located on the front side of the control panel.
In addition to being able to be spilled, the outside air exhaust flow is smoothly deflected along the deflecting plate and is discharged upward.

Also, according to the third invention,
In addition , a substantially plate-shaped rectangular parallelepiped power resistor which is a heating element,
Since the longitudinal direction is arranged side by side with the wide side face vertical, and a deflection plate with a fitting hole into which the front end of the resistor can be inserted is provided, control is performed without removing other parts.
The outside air fan can be easily installed and replaced from the rear side of the panel.
Moreover, from the exhaust duct by the outside air fan
For exhausting air and cooling resistors as heating elements
The outside air flow to the operator located on the front side of the control panel.
It is possible to reduce the length of the exhaust air passage and to reduce the air resistance to the outside air exhaust flow that flows through the periphery of the resistor and is discharged upward. Therefore, the resistors can be cooled well, and the heat exchange efficiency of the heat transfer plate can be improved.

[Brief description of drawings]

1 is a vertical cross-sectional view of an upper portion of a control panel according to a first embodiment of the present invention.

FIG. 2 is a top view of a portion shown in FIG.

FIG. 3 is an upper longitudinal sectional view of a control panel according to a second embodiment of the present invention.

FIG. 4 is a vertical sectional view of an upper portion of a control panel according to a third embodiment of the present invention.

FIG. 5 is a top view of a portion shown in FIG.

FIG. 6 is a partial perspective view of a mounting plate and a mounting bracket according to a third embodiment of the control panel of the present invention.

FIG. 7 is an upper vertical cross-sectional view of a conventional control panel.

FIG. 8 is a top view of FIG. 7.

[Explanation of symbols]

1 case, 2 partition walls, 5 ceiling plate, 5A notch, 6
Heat transfer plate, 20 box cover, 20E exhaust slit,
21 fan mounting plate, 22 mounting plate, 22B opening, 23
Deflection plate, 24 mounting plate, 24B opening, 24C deflection plate section, 24D fitting hole, 50 outside air fan, 51 screw member, 52 connector, 53 power resistor, 53A main body section, 53B leg section, 53C lead wire, 55A Connector plug, 55B connector socket, 56 operation part.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-284522 (JP, A) JP-A-6-61671 (JP, A) JP-A-2-290109 (JP, A) Actual Kaihei 2- 103708 (JP, U) Actual development 4-86013 (JP, U) Actual development 2-7706 (JP, U) Actual development 6-29194 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H02B 1/56 B23Q 1/00 B23Q 15/00

Claims (3)

(57) [Claims] 1. A housing in which a front wall and a back wall are partitioned by a partition wall, a ventilation partition is formed in the back surface, and a notch communicating with the ventilation partition is formed in the ceiling plate, and the ventilation partition. A heat transfer plate for heat exchange consisting of a vertical inner air flow passage having upper and lower ends sealed therein and an outer air flow passage having upper and lower ends opened alternately with the inner air flow passage, and the cutout portion. In a control panel having an exhaust duct in which an outside air fan that covers the upper part of the outside air flow path is forcibly cooled and an exothermic body arranged above the ceiling plate, a front face on the upper surface of the ceiling plate. A box-shaped cover having a wall surface formed on one side to integrally cover the cutout portion and the heating element and an exhaust vent on the front upper surface, and a fan to which the outside air fan is mounted on the back side.
And the box-shaped cover by the fan mounting plate.
The inside of the bar communicates with the heating element placement part on the front side and the notch part on the back side
By dividing it into parts,
And form an exhaust duct that communicates with the ventilation compartment.
The control board is characterized in that exhaust air from the exhaust duct is diverted by the outside air fan in a portion where the heating element of the box-shaped cover is disposed and is exhausted upward from the exhaust ventilation port. 2. The exhaust vent of the box-shaped cover is formed in the upper surface of the box-shaped cover, and a deflection plate extending obliquely upward toward the front is provided in front of the heating element. The control panel according to claim 1, wherein the control panel is provided. 3. The heating element arranged in front of the outside air fan includes a plurality of substantially plate-shaped rectangular parallelepiped electric power resistors, and the resistors are arranged side by side in the longitudinal direction via a mounting plate. The deflection plate is extended from the front end of the mounting plate of the resistor, and a fitting hole into which the resistor can be inserted is bored, and at least the resistance is attached. The control panel according to claim 2, wherein the front end of the container is fixed by being inserted into the fitting hole.