JP5883774B2 - Control device and control device cooling method - Google Patents

Description

  The present invention relates to a control device suitable for application to, for example, an elevator control device that controls driving of an elevator device, and a cooling method for the control device.

  A power conversion device used for an elevator control device or the like is generally configured using a plurality of semiconductor elements. As a method for suppressing the temperature rise of the semiconductor element, the semiconductor element is often radiated by forced air cooling using a fan. By suppressing the temperature rise of the semiconductor element, a reduction in the life of the semiconductor element due to heat generation due to the element loss of the semiconductor element can be suppressed.

  For example, in Patent Document 1, variation in element loss characteristics of a plurality of semiconductor elements is detected by a temperature sensor, and the amount of cooling air of each semiconductor element is adjusted based on the result, thereby maximizing the lifetime as a power conversion device. The technology to be used effectively is described.

JP 2005-45935 A

  However, Patent Document 1 mentions only the life of the semiconductor element of the power conversion device, and is mounted in the same panel housing as the power conversion device. The device is not mentioned. Moreover, it does not touch on the influence on the life of peripheral circuits (electrical parts) in transformers, reactors, etc. with a large thermal time constant.

  From the above situation, it is desired to cool an electrical component having a larger thermal time constant than the semiconductor element other than the semiconductor element mounted in the housing of the control device without reducing the efficiency of cooling the semiconductor element. It was.

The control device according to one aspect of the present invention includes an intake port provided on one surface of the device casing, and an intake side upper stage air passage and an intake side lower stage disposed above and below to circulate the gas taken in from the intake port. A ventilation path and a fan section that takes in gas from the intake-side upper ventilation path and the intake-side lower ventilation path are provided. Moreover, it has the exhaust side ventilation path which distribute | circulates the gas sent out from this fan part, and the exhaust port which exhausts the gas which distribute | circulates the exhaust side ventilation path provided in the other surface of the apparatus housing | casing. Further, the semiconductor element having the first thermal time constant provided in the internal space of the apparatus housing and the second thermal time constant larger than the first thermal time constant provided in the internal space of the apparatus housing. Electric parts. Furthermore, it has the cooling body connected between the fan part and the base part by which a semiconductor element is attached arrange | positioned between the exhaust side ventilation path.
An intake-side opening / closing member that opens or closes an opening formed between the intake-side lower air passage and the internal space of the apparatus housing, and a temperature detector disposed in the base portion are provided. In addition, a control unit that acquires the temperature detected by the temperature detector and controls the rotation of the fan unit and the opening and closing of the intake side opening / closing member is provided.

  As an example, when the temperature detected by the temperature detector reaches a temperature at which the semiconductor element is to be protected, the control unit starts rotating the fan unit with the intake side opening / closing member closed. Thereafter, when the temperature detected by the temperature detector has dropped to a temperature lower than the temperature at which the semiconductor element should be protected, control is performed to open the intake side opening / closing member.

  According to at least one embodiment of the present invention, by opening the intake side opening / closing member, the gas in the internal space of the apparatus housing can be taken into the intake side lower ventilation path. Thereby, the gas of the internal space in which the electrical component is accommodated can be cooled. Therefore, it is possible to efficiently cool the electrical components having a thermal time constant larger than that of the semiconductor element other than the semiconductor element mounted in the apparatus housing without reducing the efficiency of cooling the semiconductor element.

It is a block diagram which shows the structural example of the common power converter device used for the drive of an elevator. It is explanatory drawing which shows the whole structure of the control apparatus which concerns on the 1st Embodiment of this invention, FIG. 2A is a schematic front view of the state which opened the front door, FIG. 2B is the schematic of the XX 'line of FIG. 2A. It is sectional drawing. It is a schematic sectional drawing which shows the state which opened the intake side opening / closing member of the control apparatus shown to FIG. 2A, 2B. It is a block diagram which shows the control system of the control apparatus which concerns on the 1st Embodiment of this invention. It is explanatory drawing which shows the cooling control by the control apparatus which concerns on the 1st Embodiment of this invention. It is a schematic sectional drawing which shows the state which opened the exhaust side opening / closing member of the control apparatus which concerns on the 2nd Embodiment of this invention.

Hereinafter, an example of an embodiment for carrying out the present invention will be described with reference to the accompanying drawings. The description will be given in the following order. In addition, in each figure, the same code | symbol is attached | subjected to the common component and the overlapping description is abbreviate | omitted.
1. 1st Embodiment (example provided with intake side opening / closing member)
2. Second embodiment (example provided with exhaust side opening / closing member)
3. Modified example

<1. First Embodiment>
[Configuration of power converter]
First, a schematic configuration of the power conversion device will be described.
FIG. 1 is a block diagram illustrating a configuration example of a general power conversion device used for driving an elevator.

  In FIG. 1, the three-phase AC power supplied from the power source 3 that outputs AC power to the power receiving terminal 11 of the power converter 1 passes through the switch 12, the electromagnetic contactor 13, and the reactors 14-1 and 14-2. To the converter (rectifier circuit) 15 of the power conversion circuit. After AC power is converted to DC power by the converter 15, it is smoothed by the smoothing capacitor 16. Then, the DC power smoothed by the smoothing capacitor 16 is converted by the inverter (inverse conversion circuit) 17 into three-phase AC power adapted to the elevator operation. The AC power output from the inverter 17 is supplied to the hoisting machine 4 via the output terminal 19, and drives the elevator car 5 and the suspension weight 6 suspended from the hoisting machine 4 with a rope.

  The control power supply 7, which is a constant voltage power supply, receives three-phase AC power from the switch 12 via the terminal 130, generates a predetermined constant voltage, and supplies it to the control circuit 8.

  The control circuit 8 is a control unit that controls the power conversion device 1. The control circuit 8 includes, for example, a register 8a (an example of a storage unit), and controls the power conversion apparatus 1 based on control values, parameters, and the like stored in the register 8a. Based on the control signal output from the control circuit 8, the converter gate driver 181 of the gate driver unit 18 supplies a gate signal to the gate part of the power conversion element constituting the converter 15 of the power conversion circuit. Similarly, the inverter gate driver 182 of the gate driver unit 18 supplies a gate signal to the gate unit of the power conversion element constituting the inverter 17 as the main circuit based on the control signal output from the control circuit 8. In addition, the control circuit 8 supplies an operation signal to the electromagnetic contactor 13 via the terminal 130 and controls the opening and closing of the contacts of the electromagnetic contactor.

  For the converter 15 and the inverter 17 of the power conversion device 1, for example, a semiconductor element such as an insulated gate bipolar transistor (IGBT) is used as a power conversion element. In a power converter having a large capacity using this type of semiconductor element, a plurality of semiconductor elements and cooling devices are also configured. When installing a large-capacity power converter in a housing, a configuration is adopted in which semiconductor elements of three phases and phases are divided for each phase and the semiconductor elements of each phase are cooled by a cooling device. The semiconductor element is often used in a modular form (semiconductor module).

[Configuration of elevator control device]
FIG. 2 is an explanatory diagram showing the overall configuration of the control device according to the first embodiment of the present invention, FIG. 2A is a schematic front view of a state in which the front door is opened, and FIG. 2B is an XX of FIG. It is a schematic sectional drawing of a 'line. A control device 10 shown in FIG. 2 is an example in which the present invention is applied to an elevator control device that drives an elevator.

  The converter 15 and the inverter 17 of the power conversion device 1 are arranged in the upper part in the control device 10. A plurality of semiconductor modules 20 constituting the converter 15 and the inverter 17 are mounted on the cooler 30. In this example, the three-phase semiconductor modules are described without being distinguished for each phase of the semiconductor module.

  The cooler 30 includes an attachment base 31 (an example of a base part) on which the semiconductor module 20 is mounted, a heat pipe 32 (an example of a cooling body), and a heat radiating part 33 that radiates heat transported by the heat pipe 32. Composed. For example, the mounting base 31 and the heat radiating portion 33 are made of a material having high thermal conductivity such as aluminum. The heat pipe 32 which is a cooling body is comprised from a hollow copper tube etc., and is four in this example.

  The inside of the heat pipe 32 is adjusted to a pressure of about one-tenth of the atmospheric pressure, and water (shaded portion) is stored in the lower part. The water in the heat pipe 32 evaporates and rises when the temperature of the semiconductor module 20 reaches the boiling point, and returns to the lower part of the heat pipe 32 as water droplets when cooled.

  The heat radiating unit 33 is introduced with a gas (air) taken from an air inlet in the front of the apparatus housing by a fan, which will be described later, and cools the heat pipe 32 with the introduced gas and radiates the warmed gas. ing. As an example, the heat radiating part 33 has a plurality of slats on both the left and right sides when viewed from the front of the control device 10. The inside of the heat radiating section 33 is partitioned into four spaces, upper and lower 2 and left and right 2 as viewed from the front, corresponding to an intake side ventilation path described later. In the example of FIG. 2, the upper and lower partition plates 33 </ b> H that divide the inside of the heat radiating portion 33 in the vertical direction are indicated by broken lines.

  A temperature detector 25 is provided on the upper surface of the mounting base 31. In the control device 10, the temperature of the semiconductor module 20 of the converter 15 and the inverter 17 is monitored by detecting the temperature of the mounting base 31 by the temperature detector 25.

  A plurality of fans (an example of a fan unit) for blowing air to the heat radiating unit 33 are installed on the front side of the heat radiating unit 33. In this example, when viewed from the front of the control device 10, an upper left fan 41L, an upper right fan 41R, a lower left fan 42L, and a lower right fan 42R are installed. Hereinafter, when these four fans are not particularly distinguished, they are referred to as “fans 40”. As the fan 40, for example, a fan motor in which a fan and an electric motor are integrated can be applied.

  On the further front side of the fan 40, an air passage that efficiently takes in outside air from an air inlet opened in the upper part of the front door 80 of the control device 10 is formed. In this example, the intake-side upper left ventilation path 61L, the intake-side upper right ventilation path 61R, the intake-side lower ventilation left ventilation corresponding to the upper-stage left fan 41L, the upper-stage right fan 41R, the lower-stage left fan 42L, and the lower-stage right fan 42R. A path 62L and an intake side lower right ventilation path 62R are provided. Hereinafter, when the intake-side upper left ventilation path 61L and the intake-side upper right ventilation path 61R are not distinguished, they are referred to as “intake-side upper-stage ventilation paths 61”, and the intake-side lower-stage left ventilation path 62L and the intake-side lower-stage ventilation path 62R are When they are not distinguished, they are referred to as “intake side lower ventilation passages 62”. Further, when the four ventilation paths at the upper and lower stages on the intake side are not distinguished, they are referred to as “intake-side ventilation paths”.

  The intake-side upper ventilation path 61 and the intake-side lower ventilation path 62 are partitioned by an intake-side upper and lower partition plate 60H arranged horizontally so that upper and lower gases do not mix. Similarly, the intake side left and right partition plates are vertically arranged between the intake side upper left ventilation path 61L and the intake side lower left ventilation path 62L, and the intake side upper stage right ventilation path 61R and intake side lower stage right ventilation path 62R. It is partitioned by 60V.

  The front door 80 includes an upper left intake port, an upper right intake port, a lower left intake port, corresponding to the fan 40 and the upper left and right intake side upper ventilation passages 61 and the lower left and right intake side lower ventilation passages 62. And a lower right inlet. In FIG. 2B, an upper right intake port 81R and a lower right intake port 82R are shown as examples of the upper right intake port and the lower right intake port. Hereinafter, when the upper left intake port and the upper right intake port 81R are not distinguished, they are referred to as “upper intake port 81”, and when the lower left intake port and the lower right intake port 82R are not distinguished, they are referred to as “lower intake port 82”. Call it.

  Further, on the back side of the heat radiating unit 33, a ventilation path is formed for sending the gas warmed by passing through the heat radiating unit 33 to the exhaust port on the back surface of the control device 10. Similarly to the four intake-side ventilation paths provided on the front side of the apparatus housing, corresponding to each of the fans 40, an exhaust-side upper left ventilation path, an exhaust-side upper right ventilation path, an exhaust-side lower-stage left ventilation path, and An exhaust side lower right air passage is provided. FIG. 2B shows an exhaust-side upper-stage right ventilation path 63R and an exhaust-side lower-stage right ventilation path 64R as an example of the exhaust-side upper-stage right ventilation path and the exhaust-side lower-stage right ventilation path. Hereinafter, when the exhaust side upper left ventilation path and the exhaust side upper right ventilation path 63R are not distinguished, they are referred to as “exhaust side upper ventilation path 63”, and the exhaust side lower left ventilation path and the exhaust side lower ventilation path 64R are not distinguished. Sometimes referred to as “exhaust side lower ventilation path 64”. Furthermore, when the four ventilation paths in the upper and lower stages on the exhaust side are not distinguished, they are called “exhaust-side ventilation paths”.

  Between the exhaust side upper left ventilation path (not shown) and the exhaust side upper stage right ventilation path 63R and the exhaust side lower stage left ventilation path (not shown) and the exhaust side lower stage right ventilation path 64R in the horizontal direction so as not to mix gas Is partitioned by an exhaust side upper and lower partition plate 60R. Similarly, an exhaust side left and right partition plate (not shown) arranged vertically is disposed between the exhaust side upper left ventilation path and the exhaust side lower left ventilation path, and the exhaust side upper stage right ventilation path 63R and exhaust side lower stage right ventilation path 64R. It is partitioned by.

  The gas that has passed through each ventilation path on the exhaust side is exhausted from an exhaust port formed on the back surface 90 of the control device 10. As the exhaust ports, an upper left exhaust port, an upper right exhaust port, a lower left exhaust port, and a lower right exhaust port are provided corresponding to the fan 40 and each ventilation path on the exhaust side. FIG. 2B shows an upper right exhaust port 71R and a lower right exhaust port 72R as examples of the upper right exhaust port and the lower right exhaust port. Hereinafter, when the upper left exhaust port (not shown) and the upper right exhaust port 71R are not distinguished, they are referred to as “upper exhaust port 71” and when the lower left exhaust port (not shown) and the lower right exhaust port 72R are not distinguished. Is referred to as “lower exhaust 72”.

[Intake side opening / closing member]
As shown in FIGS. 2A and 2B, the control device 10 includes an internal space 10 </ b> S that houses each electrical component, the control power source 7, the control circuit 8, and the like that constitute the power conversion device 1 (see FIG. 1). The control device 10 then lowers the intake-side lower left ventilation path 62L and the intake-side lower right ventilation path 62R, that is, the intake-side lower-stage left ventilation path 62L and the intake-side lower-stage right ventilation path 62R and the internal space 10S of the apparatus housing. Between the two, an intake side opening / closing member 65 is provided.

FIG. 3 is a schematic cross-sectional view showing a state where the intake side opening / closing member 65 of the control device 10 shown in FIGS. 2A and 2B is opened. Hereinafter, the structure and operation of the intake side opening / closing member 65 will be described.
The intake-side opening / closing member 65 has a substantially rectangular plate shape, and is rotatably supported by a rotation shaft portion 65r provided in parallel and horizontally on the front surface of the apparatus housing. The intake-side opening / closing member 65 is rotated about the rotation shaft portion 65r by an opening / closing mechanism (not shown) to change from a horizontal posture to a substantially vertical posture, and a part of the intake port formed in the front door 80, that is, a lower stage The left intake port (not shown) and the lower right intake port 82R are lifted so as to be closed.

  When the intake side opening / closing member 65 is closed, the intake side lower ventilation path 62 and the internal space 10S of the apparatus housing are not in communication. On the other hand, when the intake-side opening / closing member 65 is opened, an intake-side opening 66 is generated below the intake-side lower ventilation path 62, and the intake-side lower ventilation path 62 and the internal space 10S of the apparatus housing communicate with each other. The opening / closing operation of the intake side opening / closing member 65 is controlled by the control circuit 8.

[Control system of control device]
Next, opening / closing control of the intake side opening / closing member 65 will be described.
FIG. 4 is a block diagram showing a control system of the control device 10.
The temperature detector 25 periodically detects the temperature of the mounting base 31, generates an analog signal corresponding to the temperature, and supplies the analog signal to the A / D converter 101. The A / D converter 101 converts an analog signal into a digital signal and supplies it to the control circuit 8. The memory 102 is a nonvolatile storage unit such as a flash memory, for example, and stores data such as control values and parameters referred to by the control circuit 8. The memory 102 may be replaced by the register 8a.

  The control circuit 8 generates a digital control signal for controlling the operation of the fan 40 and the intake side opening / closing member based on the temperature of the mounting base 31 detected by the temperature detector 25, and the D / A converter 103. The control signal is converted from digital to analog by the D / A converter 103. The control signal converted to analog is supplied to a fan drive circuit 104 that supplies a drive signal to the upper left fan 41L. Similarly, the control signal converted to analog is supplied to the fan drive circuit 105 that supplies a drive signal to the upper right fan 41R, the fan drive circuit 106 that supplies a drive signal to the lower left fan 42L, and the drive signal to the lower right fan 42R. Is supplied to a fan drive circuit 107 for supplying

  The control signal converted into analog is supplied to the opening / closing member drive circuit 108. Then, the open / close member drive circuit 108 generates a drive signal for rotating the intake side open / close member 65 by a predetermined angle around the rotation shaft portion 65r. This drive signal is supplied to an opening / closing mechanism (not shown), and opening / closing control of the intake side opening / closing member 65 is performed.

[Cooling control]
FIG. 5 is an explanatory diagram showing cooling control by the control device 10.
In FIG. 5, the horizontal axis represents time, and the vertical axis represents the temperature detected by the temperature detector 25, showing the relationship between the operation of the fan 40 and the intake side opening / closing member and the temperature.

  In the present embodiment, when the temperature of the mounting base 31 detected by the temperature detector 25 reaches the temperature at which the fan 40 should be rotated, the rotation of the fan 40 is started with the intake side opening / closing member 65 closed. Then, the intake side opening / closing member 65 is controlled to be opened at regular intervals.

  In normal elevator operation, there is a tendency for passengers to concentrate during work and work hours and during lunch time. When the passengers concentrate, the power conversion device 1 (see FIG. 1) supplies AC power to the hoisting machine 4, and the elevator is operated intermittently with a short stop time. During this time, the semiconductor module 20 (see FIG. 2) of the power conversion device 1 operates continuously or intermittently with a short stop time, and thus continues to generate heat and the temperature rises. Even when the semiconductor module 20 is intermittently operating, the average temperature gradually rises while repeatedly raising and lowering the temperature.

  Then, when the temperature detected by the temperature detector 25 passes through a temperature lower than the first threshold and becomes equal to or higher than the second threshold higher than the first threshold (time t1). The control circuit 8 rotates all the fans 40. Thereby, outside air is sucked into the control device 10, and the semiconductor module 20 is cooled by the heat radiating section 33. The first threshold value is set to a temperature at which there is a risk that the life of electrical components other than the semiconductor module 20 may be reduced due to thermal degradation. The second threshold value is set to a temperature higher than the first threshold value, which may reduce the lifetime of the semiconductor module 20 due to thermal degradation.

  When the control circuit 8 outputs a control signal to the fan drive circuits 104 to 107 to rotate the four fans 40, the intake side opening / closing member 65 is in a closed state. Thereby, the outside air taken into the four intake air passages corresponding to the four intake ports is sent to the heat radiating section 33. In the heat radiating section 33, the gas taken into each intake side ventilation path is applied to the heat pipe 32. And each outside air warmed by hitting the heat pipe 32 by the heat radiating part 33 is exhausted from each exhaust port through each exhaust side ventilation path.

  As described above, when the temperature detected by the temperature detector 25 is higher than the second threshold value, the heat pipe 32 is intensively cooled by the gas flowing through the four intake-side ventilation paths in the upper and lower stages. As a result, the temperature of the semiconductor module 20 decreases rapidly. Therefore, it is possible to prevent the life of the semiconductor module 20 from being reduced due to heat generation due to element loss.

  Next, after all four fans 40 start rotating, the concentration of passengers in the elevator stops and the temperature detected by the temperature detector 25 falls below the second threshold (time t2). The control circuit 8 outputs a control signal to the opening / closing member drive circuit 108 and opens the intake side opening / closing member 65. The intake side opening / closing member 65 is lifted, and the lower left intake port and the lower right intake port 81L of the front door 80 are closed. Then, the gas in the internal space 10S of the apparatus housing is taken into the intake-side lower ventilation path 62 from the intake-side opening 66 (see FIG. 3).

  The upper part of the heat pipe 32 in the heat radiating part 33 is in contact with the gas taken in from the upper air inlet 81, and the lower part of the heat pipe 32 is in contact with the gas taken in the air intake side lower air passage 62 from the internal space 10 </ b> S. Then, the gas taken into the intake side lower ventilation path 62 from the internal space 10 </ b> S passes through the heat radiating portion 33 and the exhaust side lower ventilation path 64 and is exhausted from the lower exhaust port 72.

  Thus, when the temperature detected by the temperature detector 25 falls below the second threshold value, the intake side opening / closing member 65 is opened. Then, for example, the gas in the control device 10 heated by the heat generated by the reactors 14-1 and 14-2 having a large thermal time constant is taken into the intake-side lower ventilation path 62. Then, this warmed gas is exhausted from each exhaust port through the heat radiating section 33 and the exhaust side lower ventilation path 64 by all the fans 40. Thereby, for example, the ambient temperature of an electrical component that is easily affected by life deterioration due to heat, such as the smoothing capacitor 16 and the control power source 7, can be lowered.

  Further, when the temperature detected by the temperature detector 25 falls from a temperature lower than the second threshold value to a temperature lower than the first threshold value (time t3), the control circuit 8 includes four units. The fan 40 is stopped and the intake side opening / closing member 65 is closed. After time t3, natural cooling is performed without forcibly cooling the heat pipe 32 by the fan 40.

  As described above, after the temperature detected by the temperature detector 25 falls below the first threshold value that may reduce the lifetime of the semiconductor module 20 and other electrical components due to thermal degradation, the fan 40 and the intake air The side opening / closing member 65 is closed. With this configuration, power consumption can be suppressed while protecting an electrical component having a large thermal time constant.

According to the first embodiment described above, by opening the intake side opening / closing member 65, the gas in the internal space 10 </ b> S of the control device 10 is taken into the intake side lower air passage 62. Thereby, the gas of the internal space 10S in which the electrical components are stored can be cooled. Here, according to the temperature detected by the temperature detector 25, the semiconductor module 20 having a small thermal time constant is first cooled, and then the gas in the internal space 10S is taken into the intake side lower ventilation path 62 to obtain the thermal time constant. Cool large electrical components.
Therefore, it is possible to efficiently cool an electrical component that has a thermal time constant larger than that of the semiconductor module 20 and that is susceptible to deterioration of the lifetime due to heat, without reducing the efficiency of cooling the semiconductor module 20.

<2. Second Embodiment>
[Exhaust side opening / closing member]
FIG. 6 is a schematic cross-sectional view showing a state in which the exhaust side opening / closing member of the control device according to the second embodiment of the present invention is opened.
A control device 10A shown in FIG. 6 is an example in which an exhaust side opening / closing member is further provided in the control device 10 (see FIG. 3) according to the first embodiment. Hereinafter, control device 10A according to the present embodiment will be described focusing on differences from control device 10 according to the first embodiment.

  The control device 10A includes an exhaust side lower left ventilation path (not shown) and an exhaust side lower stage right ventilation path 64R, that is, an exhaust side lower stage left ventilation path and an exhaust side lower stage right ventilation path 64R, and an internal space 10S of the apparatus housing. The exhaust side opening / closing member 67 is provided between the two.

  The exhaust side opening / closing member 67 basically has the same structure as the intake side opening / closing member 65. The control device 10 </ b> A includes an opening / closing mechanism (not shown) for opening and closing the exhaust side opening / closing member 67. The exhaust-side opening / closing member 67 has a substantially rectangular plate shape, and is rotated about the rotation shaft portion 67r by an opening / closing mechanism (not shown) to change from a horizontal posture to a substantially vertical posture. Lift up so as to block the mouth and the lower right exhaust port 72R.

  When the exhaust side opening / closing member 67 is closed, the exhaust side lower ventilation path 64 and the internal space 10S of the apparatus housing are not in communication. On the other hand, when the exhaust side opening / closing member 67 is opened, an exhaust side opening 68 is generated below the exhaust side lower ventilation path 64, and the exhaust side lower ventilation path 64 and the internal space 10S of the apparatus housing communicate with each other. The opening / closing operation of the exhaust side opening / closing member 67 is controlled by the control circuit 8.

[Exhaust-side opening / closing member opening / closing control]
The opening / closing control of the exhaust side opening / closing member 67 is the same as the opening / closing control of the intake side opening / closing member 65. The control system of the control device 10 shown in FIG. 4 further includes an opening / closing member drive circuit (not shown) for opening / closing the exhaust side opening / closing member 67.

  When the elevator is operated continuously or with a short stop time in a time zone where passengers are concentrated, the control circuit 8 outputs a control signal to the fan drive circuits 104 to 107 to generate four fans. Rotate 40. At this time, the intake side opening / closing member 65 and the exhaust side opening / closing member 67 are in a closed state.

  Next, the control circuit 8 opens the exhaust side opening / closing member 67 in addition to the intake side opening / closing member 65 at time t2 shown in FIG. Thereby, the gas on the front side of the internal space 10 </ b> S of the apparatus housing is taken into the intake side lower ventilation path 62 from the intake side opening 66. The gas taken into the intake-side lower ventilation path 62 is sent to the exhaust-side lower ventilation path 64 via the heat radiating section 33 by the lower-stage fan 40, and from the exhaust-side opening 68 to the rear surface of the internal space 10S of the apparatus housing. Return to the side.

  Furthermore, the control circuit 8 stops the four fans 40 and closes the intake side opening / closing member 65 and the exhaust side opening / closing member 67 at time t3 shown in FIG. After time t3, natural cooling is performed without forcibly cooling the heat pipe 32 by the fan 40.

  In the second embodiment, at time t2, in addition to the intake-side opening / closing member 65, the exhaust-side opening / closing member 67 is opened to take in the intake-side lower air passage 62 from the front side of the internal space 10S of the apparatus housing. The gas is returned to the back side of the internal space 10S of the apparatus housing. That is, the gas circulates in the internal space 10S of the apparatus housing, the intake-side lower ventilation path 62, the heat radiating portion 33, the exhaust-side lower ventilation path 64, and the internal space 10S of the apparatus casing again.

  When only the intake side opening / closing member 65 is provided as in the first embodiment, the gas in the internal space 10S of the apparatus housing is exhausted from the lower exhaust port 72 to the outside, whereby the internal space 10S is decompressed. As a countermeasure, a vent hole (not shown) is generally formed at the lower side of the front door 80, for example, at the same height as the reactors 14-1 and 14-2. The outside air taken into the apparatus housing from the vent is taken into the intake side lower ventilation path 62 and exhausted from the lower exhaust port 72 through the heat radiating section 33 and the exhaust side lower ventilation path 64. This prevents the internal space 10S from being decompressed.

  By the way, in an environment where a high degree of sealing is required, such as outdoors, it is better not to have a vent hole that lowers the degree of sealing of the apparatus housing. The IP class is known as an index representing the degree of sealing. IP (International Protection) is an indication of the foreign matter intrusion protection grade of electrical equipment and cabinets against solid foreign matter and water specified by International Electrotechnical Commission (IEC) standard 529.

  In the second embodiment, since the exhaust side opening / closing member 67 as shown in FIG. 6 is provided, the internal space 10S of the apparatus housing, the intake side lower ventilation path 62, the heat radiating portion 33, and the exhaust side lower ventilation path 64 are provided. Then, the gas circulates again with the internal space 10S of the apparatus housing. Thereby, there is no need to provide a vent in the front door or the like. Therefore, the gas in the internal space 10 </ b> S can be taken into the intake-side lower air passage 62 and radiated by the heat radiating unit 33 without reducing the pressure in the internal space 10 </ b> S of the apparatus housing.

  Thus, when it is set as the structure which provides the exhaust side opening / closing member 67, in addition to the effect which concerns on 1st Embodiment, there exists an effect that the sealing degree of an apparatus housing | casing can be made high. That is, the efficiency of cooling the semiconductor module 20 is not lowered, and the electrical components that are easily affected by the deterioration of the life due to the heat mounted in the casing of the control device 10 are efficiently cooled. The degree of sealing can be increased.

<3. Modification>
In the first and second embodiments described above, the configuration in which the intake side opening / closing member 65 and the exhaust side opening / closing member 67 are closed (horizontal posture) or opened (vertical posture) has been described. However, the present invention is not limited to this example. For example, in accordance with the temperature detected by the temperature detector 25, the intake side opening / closing member 65 and the exhaust side opening / closing member 67 are controlled to gradually change the inclination of the opening / closing member from a horizontal (vertical) to a vertical (horizontal) state. May be performed.

  Further, as described above, it is desirable that the intake-side ventilation path and the exhaust-side ventilation path are respectively separated into an upper stage and a lower stage from the viewpoint of cooling efficiency. Therefore, the intake-side left and right partition plates 60V may be removed and the intake-side upper left ventilation path 61L and the intake-side upper right ventilation path 61R may be connected and integrated. Similarly, the exhaust side left and right partition plates (not shown) may be removed, and the exhaust side upper left ventilation path 63L and the exhaust side upper stage right ventilation path 63R may be connected and integrated. However, in the first embodiment, the exhaust side ventilation path does not necessarily have to be separated into an upper stage and a lower stage.

  In the first and second embodiments described above, the opening / closing member 65 is controlled by the opening / closing member driving circuit 108, and the opening / closing control of the exhaust side opening / closing member 67 is performed by the opening / closing member driving circuit (not shown). However, the present invention is not limited to this example. For example, instead of the single intake side opening / closing member 65, two opening / closing members having sizes corresponding to the lower left intake port and the lower right intake port 82R may be used. In that case, the two opening / closing members may be controlled to open / close by the opening / closing member driving circuit 108, or the two opening / closing members may be individually controlled to open / close using separate opening / closing member driving circuits. A similar modification can be adopted for the exhaust side opening / closing member.

  In the first and second embodiments described above, the configuration including the four fans 40 has been described. However, one fan, the intake-side lower stage, is provided for the intake-side upper left ventilation path and the intake-side upper right ventilation path. One fan may be provided for the left ventilation path and the intake-side lower right ventilation path. Alternatively, the four fans 40 may be replaced with one large fan.

  Further, in the first and second embodiments described above, the inside of the heat radiating unit 33 has been described as being divided into four parts, upper, lower, left, and right, corresponding to the intake side ventilation path. I can't. However, from the viewpoint of cooling efficiency, it is desirable that the inside of the heat radiating section 33 is separated into at least an upper stage and a lower stage corresponding to the intake side ventilation path.

  In the first and second embodiments described above, the configuration in which one temperature detector 25 is arranged on the mounting base 31 has been described. However, two or more temperature detectors 25 may be provided. For example, when separate cooling systems are prepared for an inverter and a converter, use in the case where two or more power conversion devices are provided in the device housing is assumed. Two temperature detectors are arranged on the left and right sides of the mounting base 31, and the opening and closing of the left and right two open / close members provided on the lower side of the intake side or the lower side of the exhaust side are in accordance with the temperatures detected by the two temperature detectors. It is good also as a structure to control.

  In the first and second embodiments described above, the intake-side opening / closing member 65 is a substantially rectangular plate-shaped member, but the present invention is not limited to this example. For example, as the intake side opening / closing member, a plurality of movable vanes may be provided at positions corresponding to the intake side opening and the intake side lower intake port. A similar modification can be adopted for the exhaust side opening / closing member.

  In the first and second embodiments described above, the intake port, the intake side ventilation path, the heat radiating portion, the exhaust side ventilation path, and the exhaust port are arranged in a straight line in consideration of the cooling efficiency by the fluid. However, it does not exclude other configurations. For example, you may provide the exhaust port which exhausts the gas which distribute | circulates an exhaust side ventilation path not in the back surface of an apparatus housing | casing but in other surfaces, such as a side surface.

  As mentioned above, this invention is not limited to each embodiment mentioned above, Of course, unless it deviates from the summary described in the claim, various other modifications and application examples can be taken. .

Note that the present invention is not limited to the above-described embodiments, and includes other modifications and application examples without departing from the gist of the present invention described in the claims.
For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. A part of the configuration of an embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of an embodiment. Is also possible. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Power conversion device, 3 ... Power supply, 4 ... Hoisting machine, 5 ... Riding car, 6 ... Hanging weight, 7 ... Control power supply, 8 ... Control circuit, 10 ... Control device (board body), 11 ... Power receiving terminal , 12 ... Switch, 13 ... Electromagnetic contactor, 14-1, 14-2 ... Reactor, 15 ... Converter, 16 ... Smoothing capacitor, 17 ... Inverter, 18 ... Gate driver unit, 181 ... Gate driver for converter, 182 ... Inverter gate driver 19 ... Output terminal, 20 ... Semiconductor module, 25 ... Temperature detector, 30 ... Heat radiator, 31 ... Mounting base, 32 ... Heat pipe (cooling body), 33 ... Heat radiator, 33H ... Upper and lower partition plates, 41L ... upper left fan, 41R ... upper right fan, 42L ... lower left fan, 42R ... lower right fan, 60H ... intake side upper and lower partition plates , 60V ... intake side left and right partition plates, 60R ... exhaust side upper and lower partition plates, 61L ... intake side upper stage left ventilation path, 61R ... intake side upper stage right ventilation path, 62L ... intake side lower stage left ventilation path, 62R ... intake side lower stage right Ventilation path, 63R ... Exhaust side upper right ventilation path, 64L ... Exhaust side lower right ventilation path, 65 ... Intake side opening / closing member, 65r ... Rotating shaft, 66 ... Intake side opening, 67 ... Exhaust side opening / closing member, 67r ... Rotating shaft, 68 ... Exhaust side opening, 71R ... Upper right exhaust, 72R ... Lower right exhaust, 80 ... Front door, 81R ... Upper right intake, 82R ... Lower right intake, 90 ... Back, 101 ... A / D converter, 102 ... Memory, 103 ... D / A converter, 104, 105, 106, 107 ... Fan drive circuit, 108 ... Opening / closing member drive circuit

Claims (7)

An intake port provided on one surface of the apparatus housing, an intake-side upper ventilation path and an intake-side lower ventilation path that are arranged above and below to circulate the gas taken in from the intake port, and the intake-side upper ventilation path And a fan part that takes in the gas from the intake-side lower ventilation path, an exhaust-side ventilation path that circulates the gas sent out from the fan part, and the exhaust-side ventilation path provided on the other surface of the device housing An exhaust port for exhausting the flowing gas, a semiconductor element having a first thermal time constant provided in the internal space of the device casing, and the first thermal time provided in the internal space of the device casing A control device comprising: an electrical component having a second thermal time constant larger than the constant; and a cooling body connected between the fan part and the exhaust side ventilation path and connected to a base part to which the semiconductor element is attached. In
An intake-side opening / closing member that opens or closes an opening formed between the intake-side lower ventilation path and the internal space of the device housing;
A temperature detector disposed in the base portion;
A control unit that acquires a temperature detected by the temperature detector and controls rotation of the fan unit and opening / closing of the intake-side opening / closing member. When the temperature detected by the temperature detector reaches a temperature at which the semiconductor element is to be protected, the control unit starts rotating the fan unit with the intake side opening / closing member closed, and then The control device according to claim 1, wherein when the temperature detected by the temperature detector is lowered to a temperature lower than a temperature at which the semiconductor element is to be protected, control is performed to open the intake side opening / closing member. The controller is configured to protect the semiconductor element higher than the first threshold after passing through a temperature lower than a first threshold to protect the semiconductor element and the electrical component by the temperature detector. When a temperature equal to or higher than the threshold value of 2 is detected, the fan unit starts to rotate,
The control device according to claim 2, wherein after the fan unit is rotated, the intake side opening / closing member is controlled to be opened when a temperature lower than a second threshold is detected by the temperature detector. When the intake-side opening / closing member is opened, the gas in the internal space of the apparatus housing is taken into the intake-side lower ventilation path, and a part of the intake port communicated with the intake-side lower ventilation path by the intake-side opening / closing member The control device according to claim 3. An exhaust side opening / closing member that opens or closes an opening formed between the exhaust side ventilation path and the internal space of the apparatus housing;
When the temperature detected by the temperature detector reaches a temperature at which the semiconductor element is to be protected, the control unit rotates the fan unit with the intake side opening / closing member and the exhaust side opening / closing member closed. 3. Control is performed to open the intake-side opening / closing member and the exhaust-side opening / closing member when the temperature detected by the temperature detector is lowered to a temperature lower than the temperature at which the semiconductor element is to be protected. The control device described in 1. The control device according to claim 1, wherein the semiconductor element is a component of a power conversion device that supplies power to a hoisting machine of an elevator apparatus. An intake port provided on one surface of the apparatus housing, an intake-side upper ventilation path and an intake-side lower ventilation path that are arranged above and below to circulate the gas taken in from the intake port, and the intake-side upper ventilation path And a fan part that takes in the gas from the intake-side lower ventilation path, an exhaust-side ventilation path that circulates the gas sent out from the fan part, and the exhaust-side ventilation path provided on the other surface of the device housing An exhaust port for exhausting the flowing gas, a semiconductor element having a first thermal time constant provided in the internal space of the device casing, and the first thermal time provided in the internal space of the device casing A control device comprising: an electrical component having a second thermal time constant larger than the constant; and a cooling body connected between the fan part and the exhaust side ventilation path and connected to a base part to which the semiconductor element is attached. In the cooling method of
The control unit included in the control device acquires a temperature detected by a temperature detector disposed in the base unit, and rotates the fan unit based on the temperature, and the intake side lower ventilation path and the device. A control device cooling method for controlling opening and closing of an intake-side opening / closing member that opens or closes an opening formed between an internal space of a housing and an opening.

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