JP4880984B2 - Enclosure device - Google Patents

Description

    The present invention relates to a casing device having a heat exhausting section that exhausts heat from the inside of the casing, and in particular, heat generated in a device having a heat source in the casing and a movable body movable in the casing. The present invention relates to a case device for exhaust heat discharged to the outside of the case.

In general, a device having a heat source in a housing includes a heat exhaust fan that releases heat in the housing to the outside, and suppresses a temperature rise in the housing to ensure stable operation of the device. When the amount of heat generated inside the housing is large, the capacity of the exhaust heat fan is increased according to the amount of heat generated, and a cooling flow from outside the housing is introduced to suppress an increase in the temperature inside the housing. As an example of an apparatus in which a device that generates a large amount of heat is disposed in a housing, there is an X-ray CT apparatus in which an X-ray tube, an X-ray tube cooling device, a high voltage generator, and the like are disposed as a heat source. 1. As disclosed in Patent Document 2 or Patent Document 3, a housing of an X-ray CT apparatus is usually provided with a heat exhaust fan for exhausting internal heat.
JP2003-144425A JP 2004-121717 A JP 11-188029 A

  In a case where a heat source is provided in the housing, and a movable portion that is movable in the housing, for example, a rotating body that rotates or a moving body that moves linearly is arranged, air is moved along with the movement of the movable portion. There is a problem that a flow is generated and the load of the exhaust heat fan is increased due to the air flow, and wind noise or discrete frequency sound from the exhaust heat fan is increased.

  Specifically, in an X-ray CT apparatus as disclosed in Patent Document 1, Patent Document 2 or Patent Document 3, a rotating body is disposed in a housing, and the rotating body has an X-ray tube as a heat source, An X-ray tube cooling device, a high-voltage generator, and the like are placed, and two exhaust heat fans are installed on the top of the housing. In Patent Document 1 or Patent Document 2, etc., the exhaust heat fan is simply provided in the casing, and no detailed arrangement is described.

  The exhaust heat fan is usually fixed to a base, and this base is arranged to face the outer periphery of the rotating body as a movable part from the viewpoint of reducing the size of the housing, and the installation surface of the exhaust heat fan is outside the rotating body. It is installed so as to be substantially parallel to the circumference. In the exhaust heat fan having such an arrangement, when the rotating body moves, that is, rotates as the movable body, an air flow is generated along the moving direction along the movable body. Since the installation surface is in direct contact with this air flow, the inflow of air to the exhaust heat fan is obstructed, resulting in an additional load on the exhaust heat fan and wind noise or discrete noise from the exhaust heat fan. There is a problem that frequency sound increases.

  Many of the devices that generate heat in this way are equipped with a fan for exhaust heat. However, if the device is accompanied by relative movement (for example, rotation) with respect to the exhaust heat fan, the air generated inside the device Due to the influence of the flow of air, the intake air to the exhaust heat fan is disturbed. Therefore, the exhaust heat fan is turned on, an extra load is applied to the exhaust heat fan, and a discrete frequency sound peculiar to the rotation of the exhaust heat fan is amplified. In addition, the flow rate of the exhaust heat fan decreases, and as a result, the original exhaust heat performance of the fan cannot be obtained.

  As described above, when the exhaust heat fan is simply attached to the miniaturized housing, it is fixed so that the installation surface of the exhaust heat fan is arranged along the air flow, and the heat inside the housing is effectively removed. There is a problem that cannot be discharged to the outside.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a low-noise exhaust heat housing device that makes the heat exhaust capability of the fan appropriate and reduces the burden on the drive system. It is to provide.

According to this invention,
A housing,
A device which generates heat in this housing,
A rotating body that rotates within the housing, and causes the air flow along the rotation direction to occur in the housing as the rotating body rotates,
A heat exhaust unit provided in the housing for discharging the heat to the outside;
A frame-like base portion provided with an opening that faces the rotating body and is fixedly attached to the housing, and opens in a space in which the airflow is generated in the housing;
A first hollow base portion including a first hollow portion fixed to the frame-shaped base portion and air is guided through the opening; and air placed in and fixed to the hollow base portion. An exhaust heat fan that flows out to the outside,
An exhaust heat section comprising:
A housing device is provided.
Moreover, according to this invention,
A housing,
A device that generates heat in the housing;
A rotating body which is rotated in this housing, a rotating body for creating an air flow along the rotating direction with the rotation of the rotating body in the housing, and is provided in the housing, the heat An exhaust heat exhaust section to be discharged outside ,
In a casing device comprising:
The exhaust heat part is
A frame-like base portion provided with an opening that faces the rotating body and is fixedly attached to the housing, and opens in a space in which the airflow is generated in the housing;
A first hollow base portion including a first hollow portion fixed to the frame-shaped base portion and air is guided through the opening; and air placed in and fixed to the hollow base portion. An exhaust heat fan that flows out to the outside,
The exhaust heat part further includes a second hollow base part that is fixed to the frame-like base part and includes a second cavity part through which air is guided through the opening. A casing device is provided in which the base portion and the second hollow base portion are arranged along the rotation direction of the rotating body .
Furthermore, according to the present invention,
A housing,
A device that generates heat in the housing;
A rotating body that rotates within the housing, and causes the air flow along the rotation direction to occur in the housing as the rotating body rotates,
A heat exhaust unit provided in the housing for discharging the heat to the outside;
A frame-like base portion provided with an opening that faces the rotating body and is fixedly attached to the housing;
This is fixed to the frame-like base portion, and a hollow base portion to obtain Bei a cavity directed air through the opening, and is placed on and fixed to the hollow base portion, and flows out the air of the cavity space to the outside Multiple exhaust heat fans,
An exhaust heat section comprising:
A housing device is provided.

  According to the present invention, the exhaust heat capacity of the fan can be made appropriate, the burden on the drive system of the fan can be reduced, and a low noise exhaust heat housing apparatus can be realized.

  Hereinafter, an exhaust heat casing device according to an embodiment of the present invention will be described with reference to the drawings as necessary.

  First, a schematic configuration of a gantry (chassis device) of an X-ray CT apparatus as an example of a device that includes a heat exhaust unit in a housing and generates heat in the housing and a movable unit that is moved. Description will be made with reference to FIG.

  FIG. 1 is a front view schematically showing a gantry 100 of an X-ray CT apparatus as an exhaust heat casing apparatus according to an embodiment of the present invention. In FIG. 1, a part of the housing 10 of the gantry 100 is shown in a broken view in order to clearly show the exhaust heat section 14. As shown in FIG. 1, the housing 10 is integrally formed in a box shape having a front shape in which a base portion 10 b is formed in a substantially rectangular shape and an arcuate upper portion 10 a is placed on the base portion 10 b. Yes. A support column 20 that supports the gantry 100 is provided in the base 10 b, and the housing 100 is supported and fixed by the support column 20. In addition, a cavity 12 is provided in the central portion of the housing 10, and a bed 16 on which a subject (not shown) is laid is placed in the cavity 12, and the bed 16 is moved by a bed moving mechanism (not shown) at the time of diagnosis. Are moved together with the subject, and the region of interest of the subject is irradiated with X-rays.

  A disk-shaped rotating body 24 as a movable part having a circular opening corresponding to the cavity 12 formed in the center is disposed in the housing 10, and this disk-shaped rotating body 24 is indicated by an arrow R 0 by a rotation motor (not shown). It is rotated as shown in. The rotating body 24 energizes an X-ray tube that irradiates a fan-shaped X-ray beam toward a region of interest of a subject, a detector that detects the X-ray beam that has passed through the region of interest, and an X-ray tube. An X-ray tube energizing circuit, a high-voltage power supply circuit, a cooling device for cooling the X-ray tube, and a data collecting unit for collecting detection signals from the detector are mounted and fixed. An apparatus such as an X-ray tube on the rotating body 24 is not shown for the purpose of simplifying the drawing.

  In the casing 10, heat is generated from the X-ray tube on the rotating body 24, a high-voltage power supply circuit, and the like, and from a rotating motor outside the rotating body 24, and the heat is trapped in the casing 10. For this reason, the heat exhausting portions 26 and 28 are provided on the left and right sides of the upper portion 10 a of the casing, and the heat in the casing 10 is discharged outside the casing 10. As shown in FIGS. 2 (a) and 2 (b), the exhaust heat unit 26 is composed of a pair of exhaust heat fans 32a and 32b, and is a hollow box-shaped or hollow pedestal-shaped base arranged in a stepwise manner. The hollow box-shaped or pedestal-shaped bases 30a and 30b are installed and fixed on the frame-shaped base 34a. The frame-shaped base 34a is suspended or fixed to the housing upper part 10a, the support column 20 and the like. Similarly, as shown in FIG. 1, the heat exhaust section 28 is composed of a pair of heat exhaust fans 32c and 32d, and is mounted and fixed on bases 30c and 30d each having a hollow box shape or a hollow base shape. The bases 30c and 30d are installed and fixed on the frame base 34b. The frame-shaped base 34b is suspended or fixed to the housing upper part 10a, the support column 20 and the like.

  The hollow box-shaped or hollow pedestal-shaped bases 30a and 30b are arranged along the rotational direction of the rotating body 24 (corresponding to the moving direction of the movable body), and define the hollow portions 40a and 40b therein, and the frame Since the base 34a has the openings 42a and 42b, the exhaust heat fans 32a and 32b do not directly contact the space in the housing 10, and the hollow portions 40a and 40b and the frame-like base 34a have the openings 42a, It contacts the space in the housing 10 via 42b. When the rotating body 24 is rotated, an air flow flows directly in the housing 10 as indicated by an arrow F0. However, since the heat exhaust fans 32a and 32b are arranged separated from the air flow, Air is guided from the inside of the housing 10 to the spaces in the cavities 40a and 40b arranged along the air flow, and the air is effectively exhausted to the outside by the exhaust heat fans 32a and 32b. When the exhaust heat fans 32a and 32b are in direct contact with the air flow, the air flow flows along the inner surface of the housing 10, and the space in the housing 10 and the exhaust heat fans 32a and 32b are There is a risk of being blocked by the air flow on the inner surface of the housing. However, since the cavity portions 40a and 40b are provided between the air flow and the exhaust heat fans 32a and 32b, air flows into the exhaust heat fans 32a and 32b. In order to allow the air to flow by the natural action of the exhaust heat fans 32a and 32b sucking up the air once before the air is discharged, the cavity 40a, The air flow flowing into 40b can also be reliably discharged outside.

  Similarly, the hollow pedestal-shaped bases 30c and 30d define the hollow portions 40c and 40d therein, and the frame-shaped base 34b has the openings 42c and 42d. The hollow portions 40c and 40d and the frame-like base 34b are in contact with the space in the housing 10 through the openings 42c and 42d without directly contacting the space in the space 10. Accordingly, the air is once stagnated before the air flows into the exhaust heat fans 32c and 32d, and the air flows by the natural action of the exhaust heat fans 32c and 32d sucking up the air. In addition, the air flow additionally flowing into the cavities 40c and 40d by rotation can be reliably discharged to the outside.

  In FIGS. 1 and 2A and 2B, the cavity portions 40a and 40b are arranged along the air flow from the inside of the housing 10, but the cavity portions are arranged in a direction intersecting the air flow. 40a and 40b may be arranged.

  3 and 4 (a) and 4 (b) show specific examples of the exhaust heat section shown in FIGS. 1 and 2 (a) and 2 (b). As shown in FIG. 3, the hollow box-shaped or hollow pedestal-shaped bases 30a and 30b are formed by providing a step on an integrated frame 46a, and the frame-shaped base 34a is also formed by being integrated with the frame 46a. ing. As shown in FIGS. 4A and 4B, the frame 46a is formed with a depression on the side facing the inside of the housing 10, and the hollow portion 40a is formed below the hollow box-shaped or hollow base-shaped bases 30a and 30b. , 40b are provided. In the specific example shown in FIG. 3, one exhaust heat fan 32b is provided in the hollow box-shaped or hollow pedestal base 30b, but the other hollow box-shaped or hollow pedestal base 30a has two An exhaust heat fan 32a is provided to enhance the exhaust capacity. The frame 46a is provided with mounting legs 48a and 48b for mounting and fixing the frame 46a to the casing 10, and the frame 46a is securely fixed to the casing 10 by the legs 48a and 48b.

  The hollow box-shaped or hollow pedestal-shaped bases 30c and 30d are also formed in an integrated frame 46b, and the mounting legs 48a and 48b are similarly fixed to the frame 46b.

  In the heat exhausting part according to the embodiment shown in FIG. 2, the hollow box-shaped or hollow pedestal-shaped base 30a, 30b is provided on the frame-shaped base 34a that is inclined with a step to provide a triangular prism-shaped cavity 40a, As shown in FIG. 5, the hollow box-shaped or hollow pedestal base 30a, 30b is provided on the inclined frame-shaped base 34a, and the hollow box-shaped or hollow pedestal-shaped base 30a is provided. 30b, columnar cavities 40a and 40b may be defined.

  Further, as shown in FIG. 6, vibration isolating materials 50 a and 50 b may be inserted and disposed between the heat exhaust fans 32 a and 32 b and the hollow box-shaped or hollow pedestal bases 30 a and 30 b. Vibration transmission from the exhaust heat fans 32a and 32b to the hollow pedestal bases 30a and 30b is attenuated by the anti-vibration materials 50a and 50b, and noise from the exhaust heat section itself can be reduced.

  As shown in FIGS. 2 (a) and 2 (b) and FIG. 7, one exhaust heat fan 32a and 32b may be mounted on a hollow box-shaped or hollow pedestal-shaped base 30a, 30b. As shown in FIG. 1, one hollow box-shaped or hollow pedestal-shaped base 30a may be placed on the frame-shaped base 34a, and the exhaust heat fan 32a may be provided on the hollow pedestal-shaped base 30a. Further, as shown in FIG. 9, one hollow box-shaped or hollow pedestal-shaped base 30a is placed on the frame-shaped base 34a, and three exhaust heat fans 32a are mounted on the hollow box-shaped or hollow pedestal-shaped base 30a. As shown in FIG. 10, two hollow pedestal bases 30a and 30b are placed and fixed on a frame-like base 34a, and a plurality of hollow pedestal or hollow pedestal bases 30a and 30b are mounted. Exhaust heat fans 32a and 32b may be provided. Further, as shown in FIG. 11, one hollow box-shaped or hollow pedestal-shaped base 30a having a large installation area is placed on the frame-shaped base 34a, and the same number in two rows on the installation surface of the hollow pedestal-shaped base 30a. Exhaust heat fans 32a and 32b may be provided. As shown in FIG. 12, a hollow base 30a having a large installation area is placed on the frame base 34a, and the hollow base 30a is mounted. Two rows of exhaust heat fans 32a and 32b may be provided in which different numbers are arranged in each row on the installation surface. Further, as shown in FIG. 13 and FIG. 13, two hollow box-shaped or hollow pedestal bases 30 a and 30 b are placed and fixed on the frame-shaped base 34 a, and different numbers of the hollow pedestal-shaped bases 30 a and 30 b are provided. Exhaust heat fans 32a and 32b may be provided. In the example shown in FIG. 13, one exhaust heat fan 32a is provided on a hollow box-shaped or hollow pedestal base 30a, and two exhaust heat fans 32b are provided on a hollow box-shaped or hollow pedestal base 30b. Yes. In the example shown in FIG. 14, two exhaust heat fans 32a are provided on a hollow box-shaped or hollow pedestal base 30a, and four exhaust heat fans 32b are provided on a hollow pedestal base 30b.

  As described above, when a plurality of fans 32a to 32d are installed, exhaust heat installed in each hollow box shape, hollow box shape, or hollow base 32a to 32d according to the shape or size of the equipment to be installed. The number of fans does not need to be the same, and the number of fans installed in each hollow box shape or hollow base 32a-32d can be determined as appropriate.

  It should be noted that the present invention is not limited to an apparatus in which a rotating body is rotated within the casing, such as an X-ray CT apparatus, but can be applied to an apparatus in which a movable body, that is, a movable body is moved linearly within the casing. it is obvious.

  As described above, in the exhaust heat casing device of the present invention, the exhaust heat capacity of the fan can be made appropriate, the burden on the drive system can be reduced, and a low noise exhaust heat casing device is realized. be able to. In the exhaust heat casing device according to the embodiment of the present invention, a base is provided between the movable member and the fan mounting position to provide a space for the air flow generated by the movement of the movable member, and further, the exhaust heat The fan is attached to the base via a hollow pedestal to provide a stagnation space that is completely separated from the air flow caused by the movement of the movable member, so that the air flows through the exhaust heat fan. Since the space volume between the exhaust heat fan and the equipment can be increased, the buffer effect is enhanced, the flow rate of the exhaust heat fan can be maintained appropriately, and the distance between the exhaust heat fan and the equipment wall surface is increased. The sound generated from the exhaust heat fan can be further suppressed.

It is a front view which shows roughly the gantry (casing apparatus) of the X-ray CT apparatus provided with the heat exhaust part which concerns on one embodiment of this invention. (A) And (b) is sectional drawing and the expanded sectional view which show schematically the housing apparatus for waste heat shown by FIG. It is a perspective view which shows the specific example of the housing apparatus for waste heat shown by FIG. (A) And (b) is a schematic sectional view partially showing the internal structure of the gantry of the X-ray CT apparatus to which the exhaust heat unit shown in FIG. 3 is attached, and an enlarged view showing the attachment structure of the exhaust heat unit It is a cross section. It is sectional drawing which shows roughly a part of gantry of the X-ray CT apparatus provided with the heat exhaust part which concerns on other embodiment of this invention. It is sectional drawing which shows schematically a part of gantry of an X-ray CT apparatus provided with the heat exhaust part which concerns on the modification of the heat exhaust part shown in FIG. It is a perspective view which shows roughly a part of gantry (casing apparatus) of an X-ray CT apparatus provided with the heat exhaustion part shown in FIG. It is a perspective view which shows roughly the exhaust heat housing apparatus which concerns on the other modification of the exhaust heat housing apparatus shown in FIG. It is a perspective view which shows roughly the exhaust heat housing apparatus which concerns on the other modification of the exhaust heat housing apparatus shown in FIG. It is a perspective view which shows roughly the exhaust heat housing apparatus which concerns on the other modification of the exhaust heat housing apparatus shown in FIG. It is a perspective view which shows roughly the exhaust heat housing apparatus which concerns on the other modification of the exhaust heat housing apparatus shown in FIG. It is a perspective view which shows roughly the exhaust heat housing apparatus which concerns on the other modification of the exhaust heat housing apparatus shown in FIG. It is a perspective view which shows roughly the exhaust heat housing apparatus which concerns on the other modification of the exhaust heat housing apparatus shown in FIG. It is a perspective view which shows roughly the exhaust heat housing apparatus which concerns on the other modification of the exhaust heat housing apparatus shown in FIG.

Explanation of symbols

  12 . . Cavity 14, 26, 28. . . Waste heat section, 16. . . Sleeper, 20. . . Props, 24. . . Rotating body, 30a-30d. . . Hollow box shape or hollow base, 32a to 32d. . . Exhaust heat fan, 34a, 34b. . . Frame-like base, 40a, 40b. . . Cavities 42a, 42b. . . Opening, 46. . . Frames 48a, 48b. . . Legs, 50a, 50b. . . Anti-vibration material

Claims (3)

A housing,
A device which generates heat in this housing,
A rotating body that rotates within the housing, and causes the air flow along the rotation direction to occur in the housing as the rotating body rotates,
A heat exhaust unit provided in the housing for discharging the heat to the outside;
A frame-like base portion provided with an opening that faces the rotating body and is fixedly attached to the housing, and opens in a space in which the airflow is generated in the housing;
A first hollow base portion including a first hollow portion fixed to the frame-shaped base portion and air is guided through the opening; and air placed in and fixed to the hollow base portion. An exhaust heat fan that flows out to the outside,
An exhaust heat section comprising:
A housing apparatus comprising: A housing,
A device that generates heat in the housing;
A rotating body which is rotated in this housing, a rotating body for creating an air flow along the rotating direction with the rotation of the rotating body in the housing, and is provided in the housing, the heat An exhaust heat exhaust section to be discharged outside ,
In a casing device comprising:
The exhaust heat part is
A frame-like base portion provided with an opening that faces the rotating body and is fixedly attached to the housing, and opens in a space in which the airflow is generated in the housing;
A first hollow base portion including a first hollow portion fixed to the frame-shaped base portion and air is guided through the opening; and air placed in and fixed to the hollow base portion. An exhaust heat fan that flows out to the outside,
The exhaust heat part further includes a second hollow base part that is fixed to the frame-like base part and includes a second cavity part through which air is guided through the opening. A base unit and a second hollow base unit are arranged along a rotation direction of the rotating body . A housing,
A device that generates heat in the housing;
A rotating body that rotates within the housing, and causes the air flow along the rotation direction to occur in the housing as the rotating body rotates,
A heat exhaust unit provided in the housing for discharging the heat to the outside;
A frame-like base portion provided with an opening that faces the rotating body and is fixedly attached to the housing, and opens in a space in which the airflow is generated in the housing;
This is fixed to the frame-like base portion, and a hollow base portion to obtain Bei a cavity directed air through the opening, and is placed on and fixed to the hollow base portion, and flows out the air of the cavity space to the outside Multiple exhaust heat fans,
An exhaust heat section comprising:
A housing apparatus comprising:

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