JP2007197094A - Heat radiator for elevator control part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a heat radiator for an elevator control part having a simple structure in which a heat pipe is partially used and having favorable cooling performance. <P>SOLUTION: This heat radiator 50 for the elevator control part is provided with a converter 5 for converting AC power into DC power; an inverter 9 for converting the DC power to a variable frequency of a variable voltage and driving a motor 11; a thermal conduction member 51 fixing the converter 5 and the inverter 11 and dissipating heat in the heat radiator 50 for the elevator control part for dissipating heat generated from the converter 5 and the inverter 11; the heat pipe 52 having a through hole 51e in the thermal conduction member 51 immediately below a position to which the inverter 11 is fixed, and with a projecting part 52a engaged with the through hole 51e and projecting from the thermal conduction member 51; and a first fin 54 provided in the projecting part 52a of the heat pipe 52. The thermal conduction member 51 has a second fin 51f having a comb shape in a side view, in the side opposite to the position to which the converter 5 is fixed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to an improvement in a heat dissipation device of an elevator control unit.

As shown in FIG. 1 and FIG. 2 of the following patent document, for example, a radiator for an elevator control unit includes a converter for converting an AC voltage from an AC power source 3 to a DC voltage in a mounting block for a heat pipe type semiconductor cooler; The DC voltage is fixed to the variable voltage / variable frequency inverter. Here, the mounting block is made of aluminum or the like, and a nickel plating layer is provided on the inner and outer surfaces of the block.
According to the heat radiating device of the control unit, the weight of the cooler is remarkably reduced because the block is made of aluminum, the solderability between the heat pipe and the block is improved, and the electric corrosion of the semiconductor mounting surface is generated. Can be prevented, and the contact electrical characteristics can be improved.
JP-A-5-13630

However, in the heat radiating device of the elevator control unit, the converter that generates a relatively small amount of heat and the inverter that generates a relatively large amount of heat due to switching loss and the like are cooled by a heat radiating device having the same heat pipe. For this reason, there existed a subject that an apparatus became large sized and complicated.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a heat dissipation device for an elevator control unit having a simple structure using only a part of a heat pipe and good cooling performance.

According to a first aspect of the present invention, there is provided a heat dissipation device for an elevator control unit, a DC power source conversion unit that converts an AC power source into a DC power source, an AC power source conversion unit that converts the DC power source into a variable frequency of a variable voltage and drives a motor. In the heat dissipation device of the elevator controller that dissipates the heat generated from the DC power conversion means and the AC power conversion means, the DC power conversion means and the AC power conversion means are fixed and the heat conducting member that dissipates heat. And a heat pipe provided with a through-hole in the heat conduction member immediately below where the AC power conversion means is fixed, and having a protruding portion that is engaged with the through-hole and protrudes from the heat conduction member, A first fin provided on the projecting portion of the heat pipe, and the heat conducting member is comb-shaped in a side view on the opposite side to which the DC power source conversion means is fixed. A second fin of, it is characterized in.

The heat conduction member in the heat radiating device of the elevator controller according to the second invention includes a first heat conduction member having a groove for engaging the heat pipe, and a second heat conduction member for closing the groove and holding the heat pipe. It is characterized by comprising.

According to a third aspect of the present invention, there is provided a heat dissipation device for an elevator control unit that surrounds a projecting portion of a heat pipe, a first fin, a first wind tunnel for flowing a first airflow through the first fin, and a second fin. A second wind tunnel for flowing a second airflow through two fins, a first fan for generating the first airflow, and a second fan for generating the second airflow are provided.

According to the first invention, the heat dissipation of the converter is mainly performed by the second fin, and the heat dissipation of the inverter is performed by the heat pipe and the first fin via the heat conducting member. Therefore, there is an effect that it is possible to obtain a heat radiating device of the elevator control unit with a simple structure using only a part of the heat pipe and good cooling performance.

  According to the second invention, since the first and second heat conducting members do not have through holes, there is an effect that the first and second heat conducting members can be easily manufactured.

  According to the third aspect of the invention, there is an effect that the direct current power conversion means and the alternating current power conversion means can be cooled utilitatively by the first and second fans.

Embodiment 1 FIG.
An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a general view of an elevator showing an embodiment of the present invention, and FIG. 2 is a side view (a), a plan view (b), and a front view (c) of a heat dissipation device of the elevator control unit shown in FIG. .
In FIG. 1, an elevator includes a converter 5 as a DC power source conversion means for converting an AC voltage from an AC power source 3 into a DC voltage as shown in FIG. 1, a capacitor 7 for smoothing the pulsating voltage of the converter 5, and a DC current. An inverter 9 as a means for converting an AC power source having a variable voltage / variable frequency and a motor 11 for rotating the sheave 13 by the inverter 9, a rope 17 is hung on the sheave 13, and a cab is attached to one end of the rope 17 15 is fixed and a counterweight 19 is fixed to the other end of the rope 17.

In FIG. 2, the heat radiating device 50 of the elevator control unit fixes the converter 5 and the inverter 7, and dissipates heat in a substantially rectangular parallelepiped heat conduction member 51 and the heat conduction member 51 directly below the inverter 7 is fixed. Are provided with a plurality of cylindrical through-holes 51e, engaged with the through-holes 51e, a heat pipe 52 having a protrusion 52a protruding in a long shape from the heat conducting member 51, and a protrusion of the heat pipe 52 The heat conduction member 52 has a comb-shaped second fin 51f in a side view on the opposite side to which the converter 5 is fixed.

The effect | action which concerns on the heat dissipation of the thermal radiation apparatus of an elevator control part is demonstrated with FIG.1 and FIG.2. When the inverter 9 performs a switching operation in response to the command signal and applies a variable voltage having a variable frequency to the motor 11 to drive the sheave 13, the cab 15 moves up and down via the rope 17.
Along with this, the converter 5 generates heat, and the inverter 9 generates heat more than the converter 5. The heat generated by the converter 5 is dissipated into the air via the second fins 51f, and the heat generated by the inverter 9 is thermally conducted to the heat pipe 52 via the first fins 54, and from the heat pipe 52 via the first fins 54. And dissipate into the air.

As described above, the heat dissipation device 50 of the elevator control unit includes the converter 5 that converts AC power into DC power, the inverter 9 that drives the motor 11 and the converter 5 while converting the DC power into variable frequency of variable voltage. In the heat radiating device 50 of the elevator controller that dissipates the heat generated from the inverter 11, the converter 5, the heat conducting member 51 that fixes the inverter 11 and also dissipates the heat, and the heat conducting member immediately below where the inverter 11 is fixed 51 is provided with a through-hole 51e, and is engaged with the through-hole 51e and has a heat pipe 52 having a protruding portion 52a protruding from the heat conducting member 51, and a first provided in the protruding portion 52a of the heat pipe 52. The heat conduction member 51 is comb-shaped in a side view on the opposite side to which the converter 5 is fixed. Having two fins 51f.
Thereby, the heat dissipation of the converter 5 is mainly performed by the second fins 51f, and the heat dissipation of the inverter 9 is performed by the heat pipe 52 and the first fins 54 via the heat conducting member 51. Therefore, it is possible to obtain a heat radiating device for an elevator control unit having a simple structure using only a part of the heat pipe 52 and good cooling performance.

Embodiment 2. FIG.
Another embodiment of the present invention will be described with reference to FIG. FIG. 3 is a front view (a) and an exploded perspective view (b) showing the heat dissipation device of the elevator control unit.
In the first embodiment, the heat radiating device 50 is provided with the through hole 51e of the heat conducting member 51. However, in the heat radiating device 150 according to the present embodiment, as shown in FIG. A first heat conducting member 151 having a plurality of U-shaped grooves 151u, and a plate-like second heat that puts the heat pipe 52 on the groove 151u, holds the heat pipe 52, and penetrates the hole 160y. A conductive member 160 is provided, and a screw 170 is passed through a hole 160y of the second heat conductive member 160 through a washer 171 and screwed into a screw hole 151y of the first heat conductive member 151.

According to the heat dissipation device 150 of the elevator control unit according to the present embodiment, the heat conduction member 151 can be easily processed because the through hole is not processed while the effects and effects of the first embodiment are achieved.

Embodiment 3 FIG.
Another embodiment of the present invention will be described with reference to FIGS. FIG. 4 is a front view (a), a plan view (b), and FIG. 5 is a cross-sectional view (a) showing an arrow Va in FIG. 4, and an arrow in FIG. It is sectional drawing (b) which shows the view Vb.
Although the heat radiating device of the elevator control unit according to the first and second embodiments is natural cooling, in this embodiment, the heat radiating device of the elevator control unit of the first embodiment is forcibly cooled.

4 and 5, the heat dissipation device of the elevator control unit surrounds the protruding portion 52 a of the heat pipe 52 and the first fin 54, and the first air channel 211 having a substantially quadrangular prism shape that allows the first air flow to flow through the first fin 54. The second air duct 223 that surrounds the second fin 51f and causes the second airflow to flow through the second fin 51f, the first fan 201 that generates the first airflow, and the second fan that generates the second airflow. 203.

According to the heat dissipation device 250 of the elevator control unit, the converter 5 generates heat in FIGS. 4 and 5, and the inverter 9 also generates heat from the converter 5 by driving the motor 11. The heat generated in the inverter 9 is thermally conducted to the heat pipe 52 through the first fin 51 and is conducted from the heat pipe 52 to the second fin 54. This is cooled by the first airflow generated from the first fan 201. The heat generated by the converter 5 is conducted to the first fin 51f. This is cooled by the second airflow generated from the second fan 203.
According to the heat dissipation device 250 of the elevator control unit according to the present embodiment, the cooling effect of the converter 5 and the inverter 9 can be increased while exhibiting the effects and effects of the first embodiment.

  The present invention can be applied to a heat dissipation device of an elevator control unit.

1 is an overall view of an elevator showing an embodiment of the present invention. It is the side view (a), top view (b), and front view (c) of the heat radiating device of the elevator control part shown in FIG. It is the front view (a) which shows the heat radiating device of the elevator control part by other embodiment of this invention, and an exploded perspective view (b). It is the front view (a) which shows the heat radiating device of the elevator control part by other embodiment of this invention, and a top view (b). It is sectional drawing (a) which shows the arrow Va of FIG. 4, and sectional drawing (b) which shows the arrow Vb of FIG.

Explanation of symbols

  3 AC power source, 5 converter, 9 inverter, 11 motor, 50, 150, 250 heat dissipation device. 51,151 Heat conducting member, 51e through hole, 52 heat pipe, 51f second fin, 54 first fin.

Claims (3)

DC power conversion means for converting AC power to DC power;
In the heat dissipation device of the elevator controller for converting the DC power to a variable frequency of a variable voltage, and for dissipating heat generated from the AC power conversion means for driving a motor, the DC power conversion means, and the AC power conversion means,
While fixing the DC power supply conversion means, the AC power supply conversion means, and a heat conduction member to dissipate heat,
A heat pipe having a through hole provided in the inside of the heat conduction member directly below the AC power source conversion means and having a protrusion that is engaged with the through hole and protrudes from the heat conduction member;
A first fin provided on the protruding portion of the heat pipe,
The heat conducting member has a comb-shaped second fin in a side view on the opposite side to which the DC power source conversion means is fixed.
A heat dissipation device for an elevator control unit. The heat conducting member includes a first heat conducting member having a groove for engaging the heat pipe, and a second heat conducting member for closing the groove and holding the heat pipe.
The heat dissipation device for an elevator control unit according to claim 1. A first wind tunnel that surrounds the projecting portion of the heat pipe, the first fin, and allows a first airflow to flow through the first fin;
A second wind tunnel surrounding the second fin and causing a second airflow to flow through the second fin;
A first fan for generating the first airflow;
A second fan for generating the second airflow;
The radiating device for an elevator control unit according to claim 1, wherein the radiating device is provided.

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