JP4610209B2 - Elevator power converter - Google Patents

Description

  The present invention relates to a power converter for an elevator that is reduced in thickness in order to install an elevator control device in a hoistway.

  In recent years, low-rise condominium-class buildings have mostly installed machine roomless (no machine room) elevators from the viewpoint of reducing wasted space as much as possible, and also installed elevator control devices on the walls of hoistways. Cases are increasing.

  As a result, depending on the layout of the hoistway including the mechanical equipment, the control device (control panel) installed in the hoistway is also required to be thinner, space-saving and compact.

  By the way, in an elevator control device installed on a wall of a hoistway or the like, if it is classified by function or unit, as shown in FIG. 6, operation control associated with operation of a car operation panel in a car or hall call operation is performed. It comprises a control unit 51 that controls the power conversion device 52 that supplies required power to a motor that is a hoisting machine that lifts and lowers a car suspended from a main rope, and forms an outer shape 53 of the control device.

FIG. 7 is a diagram showing a configuration of a conventional elevator power converter 52.
In the figure, 61A, 61B and 61C are power modules constituting a power conversion circuit, 62 is a heat receiving plate for accumulating heat generated from the power modules 61A, 61B and 61C due to energization, and 63 is the amount of heat accumulated in the heat receiving plate 62. A heat radiation fin for radiating heat, 64 is an aluminum electrolytic capacitor for smoothing ripple after rectifying the three-phase AC power, 65 is a wind tunnel duct for preventing leakage of wind passing through the heat radiation fin 63, and 66A and 66B are cooling fans.

  Therefore, the elevator control device is provided with the power conversion device 52 for supplying electric power to the electric motor as described above, and the electric power conversion device 52 includes an electric circuit including power modules 61A, 61B, 61C and the like. Cooling structures such as a heat receiving plate 62, a heat radiation fin 63, a wind tunnel duct 65, and cooling fans 66A and 66B are mounted in order to cool the electric circuit components.

  In the height direction of the power converter 52, the power modules 61A, 61B, 61C, the heat receiving plate 62 and the heat radiating fins 63 constituting the cooler are superposed in this order, and the heat radiating fins 63 are disposed below the heat receiving plate 62. Is attached in a rectangular shape, and the entire apparatus is enlarged in the height direction. Furthermore, as the external shape of the power converter 52, in addition to the three-stage configuration including the power modules 61A, 61B, 61C, the heat receiving plate 62, and the heat radiation fin 63 as described above, the insulation distance of the power modules 61A, 61B, 61C is Since the height in consideration is necessary, the outer shape of the power conversion device 52 becomes larger and the outer shape 53 of the control device becomes larger. Therefore, there is a restriction on thinning the apparatus, and realization of a thinner apparatus is required.

  This invention is made | formed in view of the said situation, and it aims at providing the power converter device of the elevator which implement | achieves space saving and compactization by making it thinner.

(1) In order to solve the above-mentioned problem, the present invention smoothes ripples generated during power conversion and a power module having a power conversion function for converting an AC power source into required AC power and supplying it to an elevator hoist. In an elevator power conversion device used for a machine roomless elevator control device comprising a main circuit comprising an electrolytic capacitor and a cooler that cools the heat generated by the power module when energized,
A flat heat transport plate having a heat transport function in which a refrigerant is enclosed, and an amount of heat generated by the power module disposed on one side surface of the upper surface of the flat heat transport plate and superimposed on the upper side. The flat plate-shaped heat receiving body to be accumulated, and the flat plate-shaped heat transport plate are arranged so as to be in contact with the side surface portion of the heat receiving body at the other end side surface of the upper surface of the flat plate-shaped heat transport plate. A heat radiator that dissipates the amount of heat that is transported through the power converter , so that the outer height of the power converter is arranged in contact with the side surface of the heat transport plate and the heat transport plate. The height of the body of the electrolytic capacitor disposed so as to lie on the side of the heat sink is reduced, and compared with a conventional power conversion device, the height of the radiator is reduced by an amount corresponding to a thinner and more compact power. Can provide conversion device To become.

  The heat transport plate is divided into a plurality of parts, and each of them is arranged so as to straddle the heat receiving body and the heat radiating body, so that the amount of heat accumulated in the heat receiving body is not transported in an unnecessary direction, for example. It becomes possible to carry out heat transport efficiently from the direction to the radiator.

(2) Moreover, when the housing | casing of a power converter device is comprised with the steel plate material, this invention accelerates | stimulates a heat conduction function between the steel plate material which is the bottom part of this housing | casing, and a flat heat transport board. If the heat conductive material coating layer is applied, it is possible to dissipate heat from the entire casing in addition to the radiator, and the cooling efficiency can be improved.

  Further, as the electrolytic capacitor, it is possible to reduce the space of the outer shape of the apparatus by arranging it on one side of the block composed of the power module and the cooler and using an electrolytic capacitor having an oval cross section. .

(3) Further, according to the present invention, a solder bonding layer newly bonded to the entire bonding surface of the heat receiving body, the heat radiating body, and the flat heat transport plate by heating of the solder is added to the configuration of the item (1). If the configuration is such that the refrigerant is injected into the heat transport plate after applying the heat treatment, for example, it becomes possible to realize an inexpensive cooler as compared with the joining by general brazing, and thus thin and inexpensive power conversion. A device can be realized.

  Further, before applying a solder bonding layer between the heat receiving body, the heat radiating body, and the flat plate-shaped heat transport plate, if a thermosetting material coating layer is applied to a required region in a substantially central portion of the heat receiving body and the heat radiating body, It is possible to increase the viscosity of the thermosetting material coating layer during heating and bonding, and to increase the cooling efficiency as compared with that of the entire surface solder bonding layer.

  According to the present invention, a heat receiving body that accumulates a heat generation amount of a power module and a heat dissipating body that dissipates the amount of heat accumulated in the heat receiving body are separated and arranged on a heat transport plate having a heat transport function. The dimension in the mounting height direction can be suppressed, and a thinner and more compact elevator power converter can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is an internal configuration diagram illustrating an embodiment of an elevator power converter according to the present invention.

  In the figure, 1A, 1B, and 1C are composed of, for example, a converter circuit that converts a three-phase AC power source into DC power, an inverter circuit that converts DC power into required AC power, and the like. 2) is a power module that constitutes a power conversion circuit for supplying required power. These power modules 1A, 1B, and 1C are placed on the heat receiving plate 2. The heat receiving plate 2 has a function of accumulating heat generated from the power modules 1A, 1B, and 1C when energized, and has a flat plate shape. Therefore, the installation height of the power modules 1A, 1B, and 1C is relatively high. Low.

  Further, on the lower side of the heat receiving plate 2, a flat heat transport plate 3 having a heat transport function, which is also constituted by a flat plate body and in which a refrigerant is sealed, is attached. Therefore, as a power converter, the heat receiving plate 2 and the power modules 1A, 1B, 1C are superimposed on one side surface of the upper surface of the flat heat transport plate 3, and the heat receiving plate is further mounted on the other side surface of the upper surface of the transport plate 3. The heat radiating fins 4 that dissipate the amount of heat transported by the flat heat transport plate 3 from 2 are arranged in a rectangular shape, for example. As this flat heat transport plate 3, for example, it is divided into two parts, and each of them is bridged from the heat receiving plate 2 to the heat radiation fin 4 so that the heat amount accumulated in the heat receiving plate 2 is transported in an optimum state. It leads to the heat radiation fin 4.

  If the heat radiation fin 4 not only radiates the amount of heat transported from the heat receiving plate 2 through the flat heat transport plate 3 but also is disposed so as to contact the side surface of the heat receiving plate 2, the power modules 1A, 1B, The amount of heat generated by 1C can be directly taken from the heat receiving plate 2 and transmitted to the heat radiation fin 4.

  Reference numeral 5 denotes a cylindrical electrolytic capacitor that smoothes the ripple after rectifying the three-phase AC power, and includes the power modules 1A, 1B, and 1C, and constitutes the main circuit of the power converter. 6A and 6B are cooling fans.

  Therefore, according to the embodiment as described above, the heat receiving plate 2 and the heat radiating fin 4 are arranged on the flat heat transport plate 3 in a separated state, and the flat heat transport plate 3 is a flat plate body. Therefore, the height of the power module 1A, 1B, 1C installation side of the device is lower than that of the conventional device by an amount corresponding to the height of the heat radiation fin 4, and the height of the heat radiation fin 4 or the electrolytic capacitor 5 is reduced. Will be dependent. This is because a sufficient space is secured above the power modules 1A, 1B, and 1C, so that the insulation distance can be sufficiently secured without specially considering the height of the insulation distance.

  Therefore, the external height H of the power converter 7 depends on the height of the heat radiation fins 4 and the electrolytic capacitors 5, and can be reduced by the height including the power modules 1A, 1B, 1C and the heat receiving plate 2. A thin and compact power converter for an elevator can be realized.

(Second Embodiment)
FIG. 2 is an internal configuration diagram for explaining another embodiment of the elevator power converter according to the present invention. In the figure, the same or equivalent parts as in FIG. 1 are denoted by the same reference numerals, detailed description thereof will be given in FIG. 1, and particularly different parts will be described below.

  In this power conversion device, for example, the flat heat transport plate 3 is disposed on the bottom steel plate 9 of the device casing. However, a compound or a compound that promotes a heat conduction effect between the steel plate 9 and the flat heat transport plate 3 is provided. A heat conductive material coating layer 10 having a heat conduction effect and an adhesive function is applied. Since other configurations are the same as those in FIG. 1, the description will be given with reference to FIG.

  In this power converter, the amount of heat generated from the power modules 1A, 1B and 1C is accumulated in the heat receiving plate 2 and then transported by the flat heat transport plate 3 to be transmitted to the heat radiating fins 4 and further to the heat radiating fins. 4, a path for radiating heat to the outside air is traced. If a heat conducting material coating layer 10 is applied between the steel plate 9 and the flat heat transport plate 3 to apply a compound that promotes the heat conduction effect, the heat receiving plate 2 While the accumulated amount of heat is transported by the flat heat transport plate 3, it can be radiated from the apparatus housing to the outside through the heat conductive material coating layer 10. Therefore, it becomes possible to reduce the thermal resistance of the cooler of the power converter.

  In this power converter, the heat receiving plate 2 and the heat radiating fin 4 are separated and arranged on the flat heat transport plate 3 so that the height is almost the same as in FIG. Like FIG. 1, it can be realized very thin and compact.

(Third embodiment)
FIG. 3 is an internal configuration diagram illustrating another embodiment of the elevator power converter according to the present invention. In the figure, the same or equivalent parts as in FIG. 1 are denoted by the same reference numerals, detailed description thereof will be given in FIG. 1, and particularly different parts will be described below.

  In the power conversion device, although the installation height on the power modules 1A, 1B, and 1C side is lowered, the cylindrical electrolytic capacitor 5 is used as shown in FIG. Depending on the height of the electrolytic capacitor 5, the height of the power converter cannot be thinned.

  Therefore, in the power conversion device according to this embodiment, the cylindrical electrolytic capacitor 5 is arranged on one side of the block including the power modules 1A, 1B, 1C, the heat receiving plate 2, and the radiator fins 4 and the like. However, by replacing the cylindrical electrolytic capacitor 5 with an electrolytic capacitor 11 having an elliptical cross section, and having the same function as the cylindrical electrolytic capacitor 5, the outer shape in the height direction of the power converter is at least an electrolytic capacitor. 11 and can be made thinner and more compact compared to FIG. 1 or FIG. 2, and can be easily installed on the hoistway wall.

(Fourth embodiment)
FIG. 4 is an internal configuration diagram illustrating another embodiment of the elevator power converter according to the present invention. In the figure, the same or equivalent parts as in FIG. 1 are denoted by the same reference numerals, detailed description thereof will be given in FIG. 1, and particularly different parts will be described below.

  In this embodiment, a solder bonding layer 12 made of solder that is heated and melted is applied between the flat heat transport plate 3, the heat receiving plate 2, and the heat radiating fin 4, thereby improving the thermal conductivity. Actually, before injecting the refrigerant into the flat heat transport plate 3, the entire contact surface between the flat heat transport plate 3 and the heat receiving plate 2 is bonded by heat to the flat heat transport plate 3 and then the flat heat transport plate. 3 is performed by soldering the entire surface of the contact surface between the heat sink fins 4 and the heat radiation fins 4 by soldering and then injecting a coolant into the flat heat transport plate 3. An inexpensive cooler can be realized, and thus it is possible to provide an inexpensive and thin elevator power converter.

(Fifth embodiment)
FIG. 5 is an internal configuration diagram illustrating another embodiment of the elevator power converter according to the present invention. In the figure, the same or equivalent parts as those in FIGS. 1 and 4 are denoted by the same reference numerals, detailed description thereof will be given to FIGS. 1 and 4, and particularly different parts will be described below.

  In the elevator power converter shown in FIG. 4, the solder bonding layer 12 is applied between the heat receiving plate 2, the radiation fin 4 and the flat heat transport plate 3 by heating of the solder. In this embodiment, After applying the thermosetting material coating layer 13 such as thermosetting silicon to a required region portion in the substantially central portion of the region occupied by the heat receiving plate 2 and the heat radiating fin 4, as described above, the heat receiving plate 2 and the heat radiating fin 4. And a flat heat transport plate 3 are provided with a solder bonding layer 12 by heating of the solder. In addition, as a thermosetting material, materials, such as a phenol resin and a melamine resin, are used, for example.

  After applying the thermosetting material coating layer 13 in this way, if the solder bonding layer 12 is applied between the heat receiving plate 2, the radiation fin 4 and the flat heat transport plate 3 by heating the solder, the solder is heated. -When the bonding is performed, the thermosetting material coating layer 13 can be bonded by increasing the viscosity, and compared with the entire surface solder bonding shown in FIG. 4, a cooling device can be realized to improve the cooling efficiency, and thus the cooling efficiency is excellent. A thin elevator power converter can be provided.

  In addition, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

  In the embodiment, the flat heat transport plate 3 is divided into, for example, two parts. However, in the case of a three-phase AC power source, for example, the power modules 1A, 1B, and 1C are unit for each phase. The configuration may be such that a flat heat transport plate divided into three parts is provided in accordance with the power modules 1A, 1B, 1C of the respective phases.

  In addition, the embodiments can be implemented in combination as much as possible, and in that case, the effect of the combination can be obtained. Further, each of the above embodiments includes various higher-level and lower-level inventions, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, when an invention is extracted because some constituent elements can be omitted from all the constituent elements described in the means for solving the problem, the omitted part is used when the extracted invention is implemented. Is appropriately supplemented by well-known conventional techniques.

The block diagram which shows one Embodiment of the power converter device of the elevator which concerns on this invention. The block diagram which shows other embodiment of the power converter device of the elevator which concerns on this invention. The block diagram which shows other embodiment of the power converter device of the elevator which concerns on this invention. The block diagram which shows other embodiment of the power converter device of the elevator which concerns on this invention. The block diagram which shows other embodiment of the power converter device of the elevator which concerns on this invention. The unit block diagram of the conventional general elevator control apparatus (control panel). The block diagram of the power converter of the conventional elevator.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1A, 1B, 1C ... Power module, 2 ... Heat receiving plate, 3 ... Flat type heat transport board, 4 ... Radiation fin, 5 ... Cylindrical electrolytic capacitor, 6A, 6B ... Cooling fan, 9 ... Steel plate, 10 ... Heat conduction material Coating layer, 11 ... ellipse electrolytic capacitor, 12 ... solder joint layer, 13 ... thermosetting material coating layer.

Claims (6)

A power module having a power conversion function for converting AC power into required AC power and supplying it to an elevator hoisting machine, a main circuit comprising an electrolytic capacitor for smoothing ripples generated during power conversion, and heat generation of the power module by energization In an elevator power conversion device used for a control device of a machine roomless elevator equipped with a cooler for cooling
A flat heat transport plate with a heat transport function in which a refrigerant is enclosed;
A flat plate-shaped heat receiving body that is disposed on one side surface of the upper surface portion of the flat plate-shaped heat transport plate and accumulates the calorific value of the power module superimposed on the upper side,
It is arranged to be in contact with the side surface portion of the heat receiving body at the other end side surface of the upper surface of the flat plate heat transport plate, and dissipates the amount of heat transported from the heat receiving body through the flat plate heat transport plate. With a radiator
The height of the cooler disposed so that the outer height of the power converter is in contact with the side surface of the heat transport plate and the body height of the electrolytic capacitor disposed so as to lie on the side surface of the heat transport plate. An elevator power converter characterized by not exceeding . The elevator power converter according to claim 1,
The electric power conversion apparatus for an elevator, wherein the heat transport plate is divided into a plurality of parts and is disposed so as to straddle the heat receiving body and the heat radiating body. In the elevator power converter according to claim 1 or 2,
When the casing of the power converter is made of a steel plate material, a heat conductive material coating layer that promotes a heat conduction function is applied between the steel plate material at the bottom of the casing and the flat heat transport plate. An elevator power converter characterized by the above. In the elevator power converter according to claim 1 or 2,
An electric power converter for an elevator, wherein the electrolytic capacitor is disposed on one side of a block including the power module and a cooler, and an electrolytic capacitor having an oval cross section is used. In the elevator power converter according to claim 1 or 2,
A power conversion apparatus for an elevator, wherein a solder joint layer is provided between the heat receiving body, the heat radiating body, and the flat heat transport plate by soldering. In the elevator power converter according to claim 5,
Before applying a solder bonding layer between the heat receiving body, the heat radiating body, and the flat heat transport plate, a thermosetting material coating layer is applied to a required region in a substantially central portion of the heat receiving body and the heat radiating body. An elevator power converter characterized by the above.

Images