JP3808018B2 - Electronics - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic device capable of reducing the temperature of an electronic component near an exhaust port, and is suitable for cooling the inside of an electronic device such as a power supply device.
[0002]
[Prior art]
As a kind of electronic equipment, there is a power supply device for supplying power to external devices. As a structure of such an electronic device such as a power supply device, a fan or the like is used to cool electronic components installed inside the device. A device that forcibly generates an air flow inside is generally used. In the case of many electronic devices having such a structure, in order to efficiently generate an air flow in a casing that is an outer frame of the electronic device, an air inlet for introducing air into the casing is provided with a fan. Is provided in a part of the casing opposite to the part of the exhaust port adjacent to the part.
[0003]
[Problems to be solved by the invention]
However, in recent electronic devices, since miniaturization and high density have progressed, electronic components having high temperatures are sometimes disposed near the air inlets. In this case, the air introduced from the intake port is heated by the electronic component to become high-temperature air, and other electronic components near the exhaust port receive the flow of the high-temperature air as it is. That is, as a result, there is a possibility that the temperature of the electronic component near the exhaust port cannot be sufficiently reduced.
[0004]
On the other hand, in order to avoid that the temperature of the electronic component near the exhaust port cannot be sufficiently reduced, it has been considered to provide another intake port on another wall portion of the casing. However, when the electronic equipment is used, there is a possibility that the air intake port may be blocked, and there is no other air intake port provided at a position where it can be effectively cooled. It was difficult to cool.
[0005]
Japanese Patent Application Laid-Open No. 2001-189484 discloses a structure in which the air flow is controlled by a large duct case. However, even in the example shown in this gazette, there is a large space for the duct case because the exhaust port and the intake port where the fan is installed simply exist across the electronic component arranged in the electronic device. However, it was not always an effective structure.
[0006]
In view of the above facts, an object of the present invention is to provide an electronic device that can reduce the temperature of an electronic component near an exhaust port.
[0007]
[Means for Solving the Problems]
An electronic apparatus according to claim 1 is an electronic apparatus in which a main air inlet for introducing gas from the outside and an exhaust port for extracting gas from the inside of the casing are provided in a casing serving as an outer frame,
An air source for generating an air flow in the housing is arranged in accordance with the exhaust port, and is located in the vicinity of the exhaust port in the wall portion forming the housing and in the same plane as the wall portion provided with the exhaust port In addition, a sub-inlet for introducing gas from the outside as an auxiliary is provided,
A rectifying member that guides the flow of gas is a portion between the auxiliary air inlet and the air outlet in the housing, and is protruded and fixed at a position outside the projection range of the air source in the air blowing direction of the air source ,
The flow direction of the gas introduced from the auxiliary intake port is opposite to the flow direction of the gas introduced from the main intake port by the rectifying member .
[0008]
The operation of the electronic apparatus according to claim 1 will be described below.
The electronic device according to the present invention is configured such that a main air inlet that introduces a gas from the outside and an exhaust port that leads the gas from the inside are provided in a casing serving as an outer frame. In addition, an air source that generates an air flow in the housing is arranged in accordance with the exhaust port, and is the same as the wall portion in the vicinity of the exhaust port in the wall portion forming the housing and provided with the exhaust port. A sub-intake port for introducing gas from the outside as an auxiliary is provided at a location in the plane. Furthermore, a rectifying member that guides the flow of gas is protruded and fixed at a position between the auxiliary air inlet and the air outlet in the housing, and out of the projection range of the air source in the air blowing direction of the air source. ing. Along with this, the flow direction of the gas introduced from the auxiliary intake port is reversed by the rectifying member with respect to the flow direction of the gas introduced from the main intake port.
[0009]
Therefore, even when a large number of electronic components that generate heat are mounted on the upstream side of the air flow that is a gas generated in the housing, the temperature supplied to the electronic components located near the exhaust port from the upstream side The influence of high air can be reduced as air is introduced from the sub-intake port, and the temperature rise of the electronic components near the exhaust port can be suppressed. At this time, since the air source that generates the air flow in the housing is arranged in accordance with the exhaust port, the air source can be forcibly generated in the housing by the air source. The effect of suppressing the temperature rise of nearby electronic components is further increased.
[0010]
On the other hand, according to the present claim, a rectifying member that guides the flow of gas in the housing is protruded and fixed at a portion between the sub-intake port and the exhaust port in the housing of the electronic device. As a result, the gas flows along the rectifying member. As a result, the airflow from the sub-intake port more positively strikes the electronic component located near the exhaust port, and the effect of suppressing the temperature rise of the electronic component can be doubled.
[0011]
The operation of the electronic apparatus according to claim 2 will be described below.
This claim has the same configuration as that of claim 1 and operates in the same manner. However, in this claim, the rectifying member is formed in a plate shape and the base end side is supported by the wall portion of the housing. It is configured to be a current plate.
In other words, since the rectifying member is a rectifying plate supported by the wall portion of the housing, the rectifying member can be securely fixed in the housing, and the space is larger than necessary for installing the rectifying member. Is unnecessary in the housing.
[0013]
The operation of the electronic apparatus according to claim 3 will be described below.
This claim has the same configuration as that of claim 1 and operates in the same manner. However, in this claim, a fan unit in which a wall portion provided with an exhaust port and a blower source are unitized as a unit is provided. The rectifying member is attached to the fan unit.
In other words, if a current plate is attached to the fan unit, and the current plate has a function of supplementarily fixing, for example, a cable of the air source, the structure is integrated with the current plate when the fan unit is attached or detached. A cable or the like can be attached / detached, and this attaching / detaching operation can be simplified.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be clarified by describing an embodiment of an electronic apparatus according to the present invention with reference to the drawings.
As shown in FIGS. 1 and 2, a metal casing 12 constitutes an outer frame formed in a rectangular parallelepiped shape of a power supply device 10 that is an electronic apparatus according to an embodiment of the present invention. The upper surface of the housing 12 is covered with a metal lid member (not shown) that is a part of the housing 12. Furthermore, as shown in FIG. 2, a large number of main air inlets 14 for introducing gas from the outside into the housing 12 are arranged on the wall portion 12 </ b> A on one end side that forms the housing 12. On the other end side wall portion 12 </ b> B that forms the housing 12, an exhaust port 16 for leading gas from the housing 12 to the outside is disposed.
[0016]
That is, the main intake port 14 and the exhaust port 16 are arranged in the casing 12 so as to face each other, and the casing 12 has a structure like a duct. As shown in FIG. Among the numerous electronic components 18 between the main intake port 14 and the exhaust port 16 in the housing 12, the first heat generating electronic component 18 </ b> A, the second heat generating electronic component 18 </ b> B, The third heat generating electronic components 18C are arranged in order. Note that these heat generating electronic components may be components such as a transformer.
[0017]
On the other hand, a location adjacent to the exhaust port 16 outside the exhaust port 16 with respect to the housing 12 is an air source for forcibly blowing gas air to generate an air flow in the housing 12. The fan 20 shown in FIGS. 2 to 4 is arranged, and the air flow from the main intake port 14 to the exhaust port 16 is generated in the housing 12 by rotating the fan 20. Along with this, the plate-shaped blocking member 22 is disposed at a position on the downstream side of the air flow in the second heat generating electronic component 18B in the housing 12 so as to be inclined with respect to the air flow direction. Yes.
[0018]
Further, as shown in FIGS. 2 to 5, the wall portion 12 </ b> B provided with the exhaust port 16 is formed in the vicinity of the exhaust port 16 in a slit shape for introducing air from outside. The auxiliary air intake 24 is provided, and a rectifying plate 26 which is a rectifying member formed in a plate shape for guiding the gas flow in the housing 12 is provided between the auxiliary intake port 24 and the exhaust port 16. It is arranged at a position adjacent to the third heat generating electronic component 18C.
[0019]
On the other hand, a protective frame 28 is disposed outside the fan 20, and the fan unit shown in FIGS. 3 and 4 has a three-body structure in which the fan 20 is sandwiched between the protective frame 28 and the wall portion 12B. 30 is configured. Furthermore, since the base end side of the rectifying plate 26 is fixedly supported by the wall portion 12B, the rectifying plate 26 forms a part of the fan unit 30. The rectifying plate 26 is made of a material such as metal or synthetic resin, and extends along the longitudinal direction of the casing 12 that connects the main intake port 14 and the exhaust port 16 and the longitudinal direction of the auxiliary intake port 24. It is fixed so that the plane expands along the direction.
[0020]
As shown in FIG. 3, a part of the rectifying plate 26 is provided with a holding portion 26 </ b> A so as to cut out the rectifying plate 26, and power is supplied to a motor (not shown) that rotates the fan 20. A cable 32 for supply is locked to the holding portion 26 </ b> A of the rectifying plate 26.
[0021]
Next, the operation of the power supply device 10 according to the present embodiment will be described.
The power supply device 10 according to the present embodiment leads a main air inlet 14 through which gas can be introduced from the outside to the housing 12 in which a large number of electronic components 18 are arranged, and leads the gas from the inside of the housing 12 to the outside. The obtained exhaust port 16 is provided so as to face each other.
[0022]
Further, a sub-intake port 24 for introducing gas from the outside is provided at a location near the exhaust port 16 in the wall portion 12 </ b> B provided with the exhaust port 16. A rectifying plate 26 for guiding the gas flow is disposed between the sub-intake port 24 and the exhaust port 16 and adjacent to the third heat generating electronic component 18C. And the fan 20 which produces an airflow in the housing | casing 12 is arrange | positioned in the form adjacent to the downstream of the airflow with respect to the exhaust port 16. As shown in FIG.
[0023]
Accordingly, the air flow indicated by the arrow in FIG. 2 is forcibly generated in the housing 12 by the fan 20, so that the gas is also introduced into the housing 12 from the auxiliary intake port 24 as described above. Further, by arranging a rectifying plate 26 between the auxiliary intake port 24 and the exhaust port 16 and partitioning between them by the rectifying plate 26, as shown in FIGS. 2 and 5, the auxiliary intake port The gas introduced from 24 flows along the current plate 26. As a result, the airflow from the sub-intake port 24 positively strikes the third heat generating electronic component 18C located near the exhaust port 16.
[0024]
As a result, even when the first heat generating electronic component 18A and the second heat generating electronic component 18B, which are particularly heat generating electronic components, are mounted on the upstream portion of the gas flow generated in the housing 12, the upstream portion Therefore, the high temperature air is not supplied to the third heat generating electronic component 18C located near the exhaust port 16. Therefore, the influence of the high temperature air is reduced, and the temperature rise of the third heat generating electronic component 18C located near the exhaust port 16 can be suppressed.
[0025]
From the above, the present embodiment is a structure effective when a new air inlet is not provided in the wall portion 12C (shown in FIGS. 1 and 2) that forms the side surface of the power supply device 10, and the like. Since it is not necessary to supply fresh air from the air intake port using a large duct case as in the above-mentioned Japanese Patent Application Laid-Open No. 2001-189584, the mounting space for the electronic components in the housing 12 can be used effectively.
[0026]
On the other hand, in the present embodiment, since the rectifying member is formed in a plate shape and the base end side is the rectifying plate 26 supported by the wall portion 12B of the casing 12, the rectifying member is securely in the casing 12. Not only can be fixed to the housing 12, but also a space larger than necessary for installing the rectifying member is not required in the housing 12.
[0027]
In the present embodiment, since the blocking member 22 is disposed upstream of the third heat generating electronic component 18C in the housing 12, the flow of high temperature air to the third heat generating electronic component 18C is blocked. Thus, it becomes difficult for high temperature air to hit the third heat generating electronic component 18C. Therefore, the effect of suppressing the temperature rise of the third heat generating electronic component 18C by the auxiliary air inlet 24 and the rectifying plate 26 is further enhanced.
[0028]
In the present embodiment, since the rectifying plate 26 is attached to the fan unit 30 and the rectifying plate 26 has a function of auxiliaryly fixing the cable 32, the fan unit 30 can be removed and attached. At this time, the cable 32 can be attached / detached integrally with the current plate 26, and this attaching / detaching operation is simplified.
[0029]
Next, the result of testing the temperature change when the size of the rectifying plate 26 is changed will be described based on the graph of FIG.
That is, there is an appropriate dimension for the size of the current plate 26, the “current plate length” which is the length L1 of the current plate 26 employed in the embodiment shown in FIG. When the value of “rectifier plate length / component size”, which is a ratio to the “component size” of 18C length L2, is about 0.7 (specifically, 0.66) However, it became optimal as the graph shown in FIG. Specifically, the component temperature rise value representing the temperature rise value of the third heat generating electronic component 18C can be reduced by about 10 ° C., compared with the case where this ratio is 0 in the case of the conventional example in which no countermeasure is taken. It was.
[0030]
In the above embodiment, the rectifying plate 26 is a rectangular plate, but may be another polygonal or circular plate. Moreover, in the said embodiment, although holding part 26A was formed in the baffle plate 26, the structure without this holding part 26A may be sufficient. On the other hand, although the said embodiment demonstrated the power supply device as an example, you may employ | adopt this invention to electronic devices, such as another computer.
[0031]
【The invention's effect】
According to the electronic apparatus of the present invention, it is possible to reduce the temperature of the electronic component near the exhaust port.
[Brief description of the drawings]
FIG. 1 is a plan view of a power supply device according to an embodiment of the present invention with a cover member removed.
FIG. 2 is a schematic cross-sectional view of a power supply device according to an embodiment of the present invention.
FIG. 3 is a perspective view of a fan unit applied to the power supply device according to the embodiment of the present invention.
FIG. 4 is a perspective view of the fan unit applied to the power supply device according to the embodiment of the present invention as seen from another direction.
FIG. 5 is an enlarged cross-sectional view of a main part showing a gas flow in the power supply device according to the embodiment of the present invention.
FIG. 6 is a graph showing a temperature change when the size of the rectifying plate is changed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Power supply device 12 Housing | casing 12B Wall part 14 Main intake port 16 Exhaust port 18 Electronic component 18A 1st heat generation electronic component 18B 2nd heat generation electronic component 18C 3rd heat generation electronic component 20 Fan (blower source)
22 Blocking material 24 Sub-intake 26 Current plate (rectifying member)
30 fan units

Claims (3)

An electronic device provided with a main air inlet for introducing gas from the outside and an exhaust port for extracting gas from the inside of the housing serving as an outer frame,
An air source for generating an air flow in the housing is arranged in accordance with the exhaust port, and is located in the vicinity of the exhaust port in the wall portion forming the housing and in the same plane as the wall portion provided with the exhaust port In addition, a sub-inlet for introducing gas from the outside as an auxiliary is provided,
A rectifying member that guides the flow of gas is a portion between the auxiliary air inlet and the air outlet in the housing, and is protruded and fixed at a position outside the projection range of the air source in the air blowing direction of the air source ,
An electronic apparatus , wherein a flow direction of a gas introduced from a sub-intake port is reversed by the rectifying member with respect to a flow direction of a gas introduced from a main intake port .   2. The electronic apparatus according to claim 1, wherein the rectifying member is formed into a plate shape and is a rectifying plate having a base end supported by a wall portion of the housing.   2. The electronic apparatus according to claim 1, wherein a wall unit provided with an exhaust port and a fan source are integrated into a fan unit, and a rectifying member is attached to the fan unit.

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