JP5109840B2 - Cooling device for heating element storage device and heating element storage device using the same - Google Patents

Description

  The present invention relates to a heating element storage device.

  For example, as a heating element storage device using a cooling device for a heating element storage device, there is a mobile phone base station. This base station is provided with a plurality of communication devices in which a current of several tens of amperes or more is provided. It was configured to cool the heat with a fan.

In this heating element storage device, the external power source is converted to a DC power source, and the communication device and the fan are driven by the voltage (see Patent Document 1 for a similar prior document).
JP 2000-161875 A

  In the above conventional heating element storage device, the voltage of the DC power supply may differ depending on the location of the base station of the mobile phone, and a plurality of control boards for controlling the fan for cooling the inside are prepared according to the voltage. It was.

  When trying to make a cooling device to be installed in such a heating element storage device, the cost can be greatly reduced by sharing the control board so that it can cope with a plurality of DC voltages.

  Therefore, an object of the present invention is to provide a cooling device for a heating element storage device that is greatly reduced in cost.

  In order to achieve this object, the present invention provides a main body case having a first intake port and a first discharge port for a first environment, and a second intake port and a second discharge port for a second environment, and the main body case. Heat exchange is performed between the first environment air and the second environment air blow fan provided in the interior of the main body case and the first environment air and the second environment air. A heat exchanger, and a control device that controls the blower fan, wherein the control device detects a first system voltage and detects a first voltage value for operating the blower fan and a first voltage that stops the blower fan. A detection circuit having a third voltage detection value for detecting the two voltage detection values and the second system voltage and operating the blower fan, and a fourth voltage detection value for stopping the blower fan; and a signal of the detection circuit Voltage that monitors the system voltage received and supplied And a system judging means for discriminating the system voltage, and is configured to control the start / stop of the blower fan and the amount of blown air while monitoring the supplied system voltage. To achieve this goal.

  In addition, the first voltage detection value is higher than the second voltage detection value, and the third voltage detection value is higher than the fourth voltage detection value. Thus, a plurality of DC voltages can be obtained with a simple configuration. Can achieve a desired purpose.

  In addition, the first voltage detection value, the second voltage detection value, the third voltage detection value, and the fourth voltage detection value are configured from a determination circuit that determines by resistance voltage division. A control device capable of detecting the voltage value can be provided, and the intended purpose can be achieved.

  Moreover, it is a heating element storage device provided with a cooling device for a heating element storage device, and achieves the intended purpose.

  As described above, the present invention is provided in the main body case having the first intake port and the first discharge port for the first environment and the second intake port and the second discharge port for the second environment. A first air fan for the first environment and a second air fan for the second environment, and a heat exchanger for exchanging heat between the air in the first environment and the air in the second environment in the main body case; And a control device that controls the first and second blower fans, the control device detecting a first system voltage and operating the first and second blower fans. And a second voltage detection value for stopping the first and second blower fans, a second voltage detection value for detecting the second system voltage, and a third voltage detection value for operating the first and second blower fans and the blower fan. A detection circuit having a fourth voltage detection value to be stopped and a signal received from the detection circuit; Voltage monitoring means for monitoring the system voltage, and system judgment means for discriminating the first and second system voltages, while monitoring the supplied system voltage, the start / stop of the blower fan and the amount of blown air Since it is configured to control, a heating element storage device that greatly reduces costs by sharing a single control device without preparing a plurality of control devices for the first and second system voltages A cooling device and a heating element storage device can be provided.

  According to a first aspect of the present invention, there is provided a main body case having a first intake port and a first discharge port for the first environment and a second intake port and a second discharge port for the second environment, and the inside of the main body case. Heat for exchanging heat between the air in the first environment and the air in the second environment in the main body case, and the first air fan in the first environment and the second air fan in the second environment provided in the main body case. And a control device that controls the first and second blower fans. The control device detects a first system voltage and operates the first and second blower fans. A voltage detection value, a second voltage detection value for stopping the first and second blower fans, a third voltage detection value for detecting the second system voltage and operating the blower fan, and the first and second A detection circuit having a fourth voltage detection value for stopping the blower fan, and a signal of this detection circuit Voltage monitoring means for monitoring the supplied system voltage, and system judging means for discriminating the first and second system voltages, and operating and stopping the blower fan while monitoring the supplied system voltage and It is a cooling device for a heating element storage device that controls the amount of blown air, and the control device determines the first and second system voltages and monitors the system voltage to ensure start and stop of the blower fan and the amount of blown air. Has an effect.

  The cooling device for the heating element storage device includes a control device in which the first voltage detection value is higher than the second voltage detection value and the third voltage detection value is higher than the fourth voltage detection value. In response to the fluctuation, the voltage for stopping the blower fan is made lower than the voltage for starting, and hunting is suppressed to control the start / stop.

  In addition, the first voltage detection value, the second voltage detection value, the third voltage detection value, and the fourth voltage detection value are a cooling device for a heating element storage device provided with a control device configured by a determination circuit that determines resistance division voltage. There is an effect that the system voltage can be discriminated and monitored with a simple configuration.

  Moreover, it is a heat generating body accommodating apparatus provided with the cooling device for heat generating element accommodating apparatus, and a control apparatus has the effect | action of controlling a ventilation fan corresponding to several system voltage.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
In FIG. 1, reference numeral 1 denotes a building, and a mobile phone base station 3 is provided on the rooftop 2 thereof. The mobile phone base station 3 includes a box-shaped cabinet 4, a plurality of communication devices 5 provided in the cabinet 4, and a heating device storage device cooling device 6 provided at the front opening of the cabinet 4 so as to be opened and closed like a door. It is comprised by.

  As shown in FIG. 2, the heating element storage device cooling device 6 includes a first intake port 7 and a first discharge port 8 for the outside air (first environment) and a second one for the inside of the cabinet 4 (second environment). A main body case 11 having an intake port 9 and a second discharge port 10, a first blower fan 12 for outside air (first environment) and an interior of the cabinet 4 (second environment) provided in the main body case 11. A second blower fan 13 and a heat exchanger 14 for exchanging heat between the air in the outside air (first environment) and the air in the cabinet 4 (second environment) in the main body case 11 are provided.

  The heat exchanger 14 is generally rectangular on the surface of the first plate 15 made of synthetic resin, on the surface of the second plate 16 made of synthetic resin and rectangular, and on the surface of the second plate 16. The third plate 17 made of synthetic resin (hereinafter, a plurality of plates is used in the same manner) is polymerized in a state of being separated from each other by a predetermined distance.

  The upper surface in FIG. 2 of the heat exchanger 14 thus polymerized is the second inlet 18 through which the air in the cabinet 4 flows in via the second air inlet 9, and this second inlet The air that has flowed into the heat exchanger 14 from 18 is then discharged into the cabinet 4 from the second outlet 19 provided on the lower right side of FIG.

  Moreover, the outside air outside the cabinet 4 flows in from the first inlet 20 provided on the lower surface in FIG. 2, and flows out of the cabinet 4 from the first outlet 21 provided on the upper left side.

  As shown in FIG. 3, the first blower fan 12 and the second blower fan 13 as blower fans are connected to a control device 22 described later, and the control device 22 is connected to the cabinet 4 together with the communication device 5. The supplied external power supply 23 is connected to a converted DC power supply 24.

  And the control apparatus 22 is comprised from the inverter 25 which operates the 1st ventilation fan 12 and the 2nd ventilation fan 13 separately, and the main board | substrate 26 which controls these inverters 25. FIG.

  As shown in FIG. 4, the main board 26 includes an operation instruction unit 27 that instructs the inverter 25 to perform an operation, and a voltage monitoring unit 28 that operates the operation instruction unit 27 by monitoring the DC voltage V <b> 1 of the DC power supply 24. Is done.

  Then, as shown in the figure, the voltage monitoring means 28 detects the first DC voltage as the DC voltage V1 of the DC power supply 24 and activates the first blower fan 12 and the second blower fan 13. Are connected to the first detection circuit 30 as a detection circuit having a first voltage detection value 29 and a second detection circuit 32 as a detection circuit having a second voltage detection value 31 as a threshold value to be stopped.

  Further, the voltage monitoring means 28 detects the second DC voltage as the DC voltage V1 of the DC power supply 24 and detects the third voltage detection value as a threshold for starting the first blower fan 12 and the second blower fan 13. The third detection circuit 34 is connected to the fourth detection circuit 36 as a detection circuit having a fourth voltage detection value 35 as a threshold value to be stopped.

  The voltage monitoring means 28 is connected to the system determination means 37 for determining the supplied DC voltage V1, that is, the system voltage, and has a software switching means 38 for issuing an instruction to the operation instruction means 27 in accordance with the determination. Is.

  In addition, as shown in FIG. 5, the first detection circuit 30, the second detection circuit 32, the third detection circuit 34, and the fourth detection circuit 36 are each a shunt that divides and inputs the DC power supply 24 by two resistors. The regulators 39 to 42 and photocouplers 43 to 46 connected to the outputs thereof are configured to transmit “Hi” and “Lo” signals to the voltage monitoring means 28.

  That is, the first detection circuit 30 sets the voltage dividing ratio of the resistor so that the threshold value 2.5 V of the shunt regulator 39 is exceeded when the first voltage detection value 29 is applied to the two resistors. When the threshold value is exceeded, the output of the shunt regulator 39 becomes “Lo”, and the light emitting diode on the input side of the photocoupler 43 is turned on. The voltage monitoring means 28 is configured to transmit a “Lo” signal.

  In general, 48V and 24V are used as the system voltage for the voltage of the DC power supply 24. Therefore, in this embodiment, the first DC voltage is 48V and the other DC voltage is the other. Is 24V, the first voltage detection value 29 is 38V, the second voltage detection value 31 is 37V, the third voltage detection value 33 is 18V, and the fourth voltage detection value 35 is 17V. That is, the first voltage detection value 29 is set higher than the second voltage detection value 31 with respect to the first DC voltage. Further, the third voltage detection value 33 is set higher than the fourth voltage detection value 35 with respect to the second DC voltage.

  Now, according to the above configuration, the air heated by the communication device 5 in the cabinet 4 is sucked into the second blower fan 13 from the second air inlet 9 of the cooling device 6 for the heating element storage device. Then, it flows into the heat exchanger 14 from the second inlet 18, passes between the second plate 16 and the third plate 17, and becomes cold air from the second outlet 19 and the second outlet 10. Returning to the inside of the cabinet 4, the communication device 5 is thereby cooled. On the other hand, outside air is sucked into the first blower fan 12 from the first air inlet 7 and flows into the heat exchanger 14 from the first inlet 20, and the first plate body 15 and the second plate body 16. After passing through, it flows out of the cabinet 4 through the first outlet 21 and the first outlet 8.

  In order to reliably perform the above operation, the voltage monitoring unit 28 detects the output signals of the first detection circuit 30, the second detection circuit 32, the third detection circuit 34, and the fourth detection circuit 36. First, the system determination means 37 determines the DC voltage V1 of the DC power supply 24.

  That is, when 48V is supplied from the DC power source 24, the outputs of the shunt regulators 39 to 42 are all “Lo”, and all the signals “Lo” are detected via the photocouplers 43 to 46. . Then, the system determination unit 37 determines that the system voltage is 48V. When 24 V is supplied, the output signals of the shunt regulators 39 to 42 are “Lo”, “Lo”, “Hi”, “Hi”, and the voltage monitoring unit 28 turns the photocouplers 43 to 46 on. Through this, signals of “Lo”, “Lo”, “Hi”, and “Hi” are detected. And the system | strain judgment means 37 discriminate | determines that a power supply voltage is 24V.

  Then, the voltage monitoring unit 28 switches the software of the software switching unit 38 according to the system voltage and issues an operation instruction unit 27 instruction. The voltage monitoring unit 28 determines the voltage corresponding to the plurality of system voltages, and the first The blower fan 12 and the second blower fan 13 are driven to ensure a predetermined air volume. Accordingly, the air in the cabinet 4 can be reliably cooled by sharing a single control device 22 without preparing a plurality of control devices for a plurality of system voltages.

  However, since the plurality of communication devices 5 perform wireless communication with another mobile phone base station that is far away, a current of several tens of A flows intermittently, and thus the DC power supply 24 causes a voltage fluctuation. When the DC voltage V1 becomes lower than a predetermined voltage, the current is increased to secure the air flow in order to secure the air flow, but when the voltage drops to an unexpected voltage, the current increases and the inverter increases. There is a possibility that a current exceeding the allowable current value of 25 flows and breaks down.

  Therefore, in the cooling device 6 for a heating element storage device of the present embodiment, the voltage monitoring means 28 further monitors the voltage fluctuation of the system voltage of the DC power supply 24 and operates the operation instruction means 27 to operate the inverters 25, 26. And the first blower fan 12 and the second blower fan 13 are started and stopped.

  That is, as shown in FIG. 6, when the cooling device 6 for a heating element storage device is supplied with 48 V as a predetermined DC voltage V 1 from the DC power supply 24, the DC voltage V 1 is Slowly descends. At that time, when the voltage reaches 38 V while being affected by the ripple component, the output of the first detection circuit 30 causes hunting of “Hi” and “Lo” and repeats the change. When the voltage further falls to 37V, the output of the second detection circuit 32 also changes while causing “Hi” and “Lo” hunting. Then, when the output of the second detection circuit 32 becomes “Hi”, the voltage monitoring unit 28 determines that the voltage is insufficient and outputs a stop signal to the operation instruction unit 27. After that, the load current of the communication device 5 decreases, the DC voltage V1 rises again and rises above 37V, and when it exceeds 38V, the output of the first detection circuit 30 becomes “Lo”, and the voltage monitoring means 28 has recovered the voltage. And the operation instruction means 27 outputs an operation start signal.

  Although omitted in the above description, when the DC voltage V1 increases, hunting occurs in the vicinity of the threshold as in the case where the DC voltage V1 decreases due to the influence of the ripple component.

  However, by separating the threshold value for lowering and the threshold value for rising as in this embodiment, the detection circuit is also made different, so that the software can perform the input signal as has been conventionally performed. When a change is detected, a time lag of a predetermined time is set to stabilize the operation by hunting, or the voltage is monitored while frequently judging whether the voltage is rising or falling for an input that repeats hunting. The complexity of such a determination is released, and the algorithm can be simplified. As a result, the control device 22 can easily cope with power supply voltages as a plurality of system voltages with a simple configuration.

  Also, as shown in FIG. 7, even when 24 V is supplied as the predetermined DC voltage V <b> 1 from the DC power supply 24, the DC voltage slowly decreases due to the operation of the communication device 5. At that time, when the voltage reaches 18 V while being influenced by the ripple component, the output of the first detection circuit 30 repeats changing while causing hunting with “Hi”, “Lo”, “Hi”, and “Lo”. When the voltage further decreases and reaches 17 V, the output of the fourth detection circuit 36 also changes while causing hunting with “Hi”, “Lo”, “Hi”, “Lo”. Then, when the output of the fourth detection circuit 36 becomes “Hi”, the voltage monitoring unit 28 determines that the voltage is insufficient and outputs a stop signal to the operation instruction unit 27. Thereafter, the voltage rises again and rises above 17V, and the output of the third detection circuit 34 exceeding 18V becomes “Lo”, and the voltage monitoring means 28 determines that the voltage has been restored, and the operation instruction means 27 starts operation signal. Will be output.

  In the present embodiment, as described above, it is possible to cope with the voltage of the DC power supply 24 that differs depending on the base station 3 of the mobile phone by preparing only one control device 22, and the cost can be greatly reduced. Also, since the system voltage corresponds to one of 24V and the other 48V as in the present embodiment, the allowable current value of the inverter 25 is ½ times that of the other. In some cases, sharing with 25 is difficult. In such a case, since the control device 22 is composed of the inverter 25 and the main board 26 that controls the inverter 25, only the main board 26 can be shared to cope with a plurality of system voltages, and the cost is similarly reduced. You can go down.

  In addition, since the first voltage detection value 29 is higher than the second voltage detection value 31, and the third voltage detection value 33 is higher than the fourth voltage detection value 35, the control apparatus is stopped. Since the voltage to be activated is lower than the voltage to be activated, a large hysteresis can be provided, and the power supply voltage can be monitored in correspondence with a plurality of system voltages with a simple configuration.

  Further, the first voltage detection value 29, the second voltage detection value 31, the third voltage detection value 33, and the fourth voltage detection value 35 are resistance-divided, and a simple configuration in which the shunt regulators 39 to 42 and the photocouplers 43 to 46 are combined. Thus, a determination circuit for determining the voltage can be configured.

  As a result, it is possible to provide a cooling device for a heating element storage device that realizes a significant cost reduction by sharing a control device and corresponding to a plurality of system voltages, and a heating element storage device using the cooling device.

  As described above, the present invention detects the first DC voltage and detects the first voltage detection value for operating the blower fan, the second voltage detection value for stopping the blower fan, and the second DC voltage. A third voltage detection value for operating the first and second blower fans and a fourth voltage detection value for stopping the first and second blower fans are provided, and the DC voltage supplied from the heating element storage device is monitored. However, the cooling device for the heating element storage device is provided with a control device for controlling the operation stop of the first and second blower fans, and can cope with a plurality of power supply voltages with one control device, thereby greatly reducing the cost. Can be provided. Therefore, for example, it is extremely useful as a cooling facility in a base station of communication equipment or other outdoor equipment.

The perspective view which shows the example of installation of one Embodiment of this invention Sectional view of the cooling device for the heating element storage device Configuration diagram of the heating element storage device Configuration diagram of the controller Configuration diagram of the control device detection circuit The figure explaining operation of the detection circuit Another diagram for explaining the operation of the detection circuit

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building 2 Rooftop 3 Base station of mobile phone 4 Cabinet 5 Communication device 6 Cooling device for heating element storage device 7 First intake port 8 First discharge port 9 Second intake port 10 Second discharge port 11 Main body case 12 First Blower fan 13 Second blower fan 14 Heat exchanger 18 Second inlet 19 Second outlet 20 First inlet 21 First outlet 22 Controller 28 Voltage monitoring means 29 First voltage detection value 30 First detection circuit 31 Second voltage detection value 32 Second detection circuit 33 Third voltage detection value 34 Third detection circuit 35 Fourth voltage detection value 36 Fourth detection circuit 37 System determination means

Claims (4)

A main body case having a first intake port and a first discharge port for the first environment, and a second intake port and a second discharge port for the second environment, and a first environment first case provided in the main body case A second air fan for the second environment, a heat exchanger for exchanging heat between the air in the first environment and the air in the second environment in the main body case, and the first and second air A control device that controls the blower fan, wherein the control device detects a first system voltage and operates the first and second blower fans, and the first and second voltage detection values; A second voltage detection value for stopping the blower fan, a third voltage detection value for detecting the second system voltage and operating the blower fan, and a fourth voltage detection value for stopping the first and second blower fans. The detection circuit equipped and the system voltage supplied in response to the signal from this detection circuit are monitored. A heating element housing that controls the start / stop of the blower fan and the amount of blown air while monitoring the supplied system voltage. Cooling device for equipment. The cooling device for a heating element storage device according to claim 1, further comprising a control device in which the first voltage detection value is higher than the second voltage detection value and the third voltage detection value is higher than the fourth voltage detection value. The heating element storage according to claim 1 or 2, further comprising a control device comprising a determination circuit for determining the first voltage detection value, the second voltage detection value, the third voltage detection value, and the fourth voltage detection value by resistance voltage division. Cooling device for equipment. A heating element storage device comprising the cooling device for a heating element storage device according to claim 1.

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