JPH04348553A - Cooling water supplying device - Google Patents

Abstract

PURPOSE:To reduce the number of internal components, reduce the device cost and reduce the external dimensions of a cooling water supplying device which conducts heat to cool a heating element widely mounted on electronic devices. CONSTITUTION:A case 18 is provided with an air inlet 18a and an air outlet 18b. A side wall facing the air outlet 18b is provided with a pump unit 16b which directly connects a pump 16-1 with the one edge of a driving motor 16-2 and that firmly fixes an runner 16-3 on the other edge. A heat exchanger 3 is fixed between the runner 16-3 and the air outlet 18b, a cooling water flowing quantity sensor 5 is provided and the discharge opening 16-1b of the pump 16-1, the heat exchanger 3 and the flowing quantity sensor 5 are connected.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling water supply device for conducting conduction cooling of heating elements widely installed in various electronic devices.

[0002]Recently, semiconductor devices (hereinafter referred to as heating elements) mounted on printed circuit board units such as large computers have become more highly integrated and their heat generation has increased, and the demand for the cooling performance of these semiconductor devices has increased. Since the requirements are very strict, conduction cooling modules are used that circulate a highly efficient refrigerant in a fixed direction to cool the area by heat conduction.

However, the cooling water supply device that supplies refrigerant to the conduction cooling module has a large external size because it includes a pump unit, a refrigerant flow rate sensor, a fan, a fan sensor, and a heat exchanger. There is a need for a cooling water supply device with a small external dimension that can reduce the installation space without reducing the cooling water supply capacity because it is placed outside the device equipped with the plate unit.

0004

2. Description of the Related Art A cooling water supply device that has been widely used in the past includes a case 8 having an intake port 8a and an exhaust port 8b formed on two orthogonal surfaces, as shown in FIG. Inside is a motor 6- for driving the pump 6-1.
By fixing the pump unit 6 to which the pump unit 2 is directly connected, the suction port 6-1a is inserted through the side wall, and the flow rate sensor 5 of the pump unit 6 is disposed nearby.

Further, the heat exchanger 3 is fixed inside the case 8 in a state facing the exhaust port 8b, and the impeller 7-1 is directly connected to the fan motor 7-2, and the fan sensor 7-3 is installed inside the case 8. An attached fan unit 7 is provided to connect the discharge port 6-1b of the pump 6-1, the inlet of the heat exchanger 3, and the outlet of the heat exchanger 3 to the flow rate sensor 5 by a hose 4. There is.

[0006]The motor 6 of the pump unit 6
-2 and the fan motor 7-2 of the fan unit 7 are driven, the pump 6-1 and the impeller 7-1 rotate, and the cooling water is supplied to the suction port 6-1 of the pump 6-1.
The cooling water is sucked in from a and forced to the heat exchanger 3 through the outlet 6-1b, and is cooled by the fan unit 7, and this cooling water passes through the flow rate sensor 5. It is configured such that it is fed under pressure from a rubber hose 9.

[0007] The cooling structure of the printed board unit using the cooling water supply device configured as described above is as shown in FIG. is connected to the cold plate 2- of the conduction cooling module 2 via the flow rate sensor 5.
By passing through this channel 2-1a, the heat of the cold plate 2-1 is absorbed, and the heat is returned to the pump 6-1 of the pump unit 6 for circulation.

[0008] On the other side of the heat dissipation block 2-2, which is tightly fastened to the cold plate 2-1, is an L.
The substrate 1-1 of the printed board unit 1 on which the heating element 1-2 such as SI is mounted is fixed, and the heat dissipation block 2-2 is fixed.
By pressing the tip end surface of the heat dissipating piston 2-3, which is disposed on one side and is biased in the projecting direction by the spring 2-4, against the heat dissipating surface of the heat generating element 1-2, the heat dissipating element 1-2 is heated. The structure is such that heat is transferred through the heat radiation piston 2-3 and the heat radiation block 2-2, and is cooled by the cold plate 2-1.

[0009]

Problem to be Solved by the Invention The problem with the conventional cooling water supply device described above is that the pump unit 6 and the fan sensor 7-3 are disposed inside the case 8, as shown in FIG.
A fan unit 7 with attached and a large heat exchanger 3
are installed in series, and the cooled coolant is transferred to the conduction cooling module 2.
If the cooling fluid is not circulated, the printed circuit board unit 1 on which the heating element 1-2 such as an LSI is mounted will be destroyed. As a result, the external dimensions of the case 8 become large, requiring a large space for installation, and the number of parts increases, resulting in an increase in the cost of the device.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a new cooling water supply device that can reduce the number of internally installed parts to reduce device costs and reduce external dimensions.

[0011]

[Means for Solving the Problems] As shown in FIG. 2, the present invention provides a pump in which a pump 16-1 is directly connected to one end of a drive motor 16-2, and an impeller 16-3 is fixed to the other end. By installing the unit 16 inside the side wall facing the exhaust port 18b of the case 18, which is formed so that the intake port 18a and the exhaust port 18b are perpendicular to each other, the suction port 16-1
a through the side wall, fixing the heat exchanger 3 between the impeller 16-3 of the pump unit 16 and the exhaust port 18b, and disposing the cooling water flow rate sensor 5. -1 outlet 16-1b and the heat exchanger 3
The inlet and outlet of the flow rate sensor 5 are connected by a hose 4.

0012

[Operation] In the present invention, the pump 16-1 is directly connected to one end of the drive motor 16-2, and the impeller 16 is connected to the other end.
Since the pump unit 16 to which -3 is fixed is installed, when the pump unit 16 is driven, the pump 16-1
The cooling water passes through the heat exchanger 3 and the flow rate sensor 5, and the impeller 16-3 rotates to air-cool the heat exchanger 3, eliminating the need for the fan motor and fan sensor of the conventional fan unit. Since the number of parts is reduced, the cost of the device is reduced, and the external dimensions can be reduced by the space occupied by the unnecessary fan motor and fan sensor.

[0013]

Embodiments Embodiments of the present invention will be described in detail below with reference to FIGS. 2 to 10. FIG. 2 is a schematic diagram showing a cooling water supply device according to a first embodiment of the present invention, FIG. 3 is a schematic diagram showing a cooling water supply device according to a second embodiment, and FIG. 4 is a schematic diagram showing a heat exchanger according to a second embodiment. A perspective view, FIG. 5 is a schematic diagram showing the cooling water supply device of the third embodiment, FIG. 6 is a schematic diagram showing the cooling water supply device of the fourth embodiment, and FIG. 7 is an exploded view showing the main parts of the fourth embodiment. Perspective view, Figure 8
9 is a schematic diagram showing the cooling water supply device of the fifth embodiment, FIG. 9 is a schematic diagram showing the cooling water supply device of the sixth embodiment, and FIG. 10 is an exploded perspective view of the sixth embodiment. The same members as in FIGS. 11 and 12 are given the same symbols.

The cooling water supply device according to the first embodiment is shown in FIG.
As shown in the figure, the pump 1 is connected to one end of the drive motor 16-2
6-1, and has an impeller 16-3 fixed to the other end for blowing a predetermined amount of air in the direction of arrow C.
6, and this pump unit 16 is internally installed in the side wall facing the exhaust port 18b of the case 18, which has an intake port 18a and an exhaust port 18b formed on two orthogonal surfaces. through the heat exchanger 3.
The impeller 16-3 of the pump unit 16 and the exhaust port 1
8b.

Further, a cooling water flow rate sensor 5 is disposed near the pump unit 16, and the pump 1
The discharge port 16-1b of the pump 16-1 is connected to the inlet of the heat exchanger 3, and the outlet of the heat exchanger 3 and the flow rate sensor 5 are connected by a hose 4, and the suction port 16-1 of the pump 16-1 is
A and the outlet of the flow rate sensor 5 and a conduction cooling module (not shown) are connected with a rubber hose 9.

As shown in FIG. 1, when the motor 16-2 of the pump unit 16 is driven, the pump 16-1
The impeller 16-3 rotates, and the cooling water is pumped to the pump 16-1.
The cooling water is sucked in through the suction port 16-1a and is force-fed through the discharge port 16-1b to the heat exchanger 3, where the cooling water is cooled and passed through the flow rate sensor 5 to the conduction cooling module. It is constructed so that the heat of the heat generating element of the printed board unit 1 fixed to the heat radiation block 2-2 is absorbed and circulated again to the pump 16-1.

As a result, since the fan motor and fan sensor of the conventional fan unit are no longer required, the number of installed parts is reduced, reducing equipment costs, and the space occupied by the unnecessary fan motor and fan sensor is saved. The external dimensions of the can be reduced.

The cooling water supply device according to the second embodiment is shown in FIG.
As shown in the figure, a pump 6-1 and a driving motor 6-2 are installed.
A pump unit 6 similar to the conventional one that is directly connected to the intake port 28
A case 28 in which a and an exhaust port 28b are formed on two orthogonal surfaces.
A flow rate sensor 5 is fixed to the inner wall facing the exhaust port 28b, and a flow rate sensor 5 is disposed near the exhaust port 28b, and the impeller 7-1 is directly connected to the fan motor 7-2 at a position corresponding to the exhaust port 28b. A fan unit 7 equipped with a fan unit 7-3 is installed in the vicinity of the motor 6-2 of the pump unit 6.

Further, as shown in FIG. 4, a plurality of fins 23-2 having excellent heat conduction are arranged in parallel at the bottom of each of the opposing frames 23-1 so as to be orthogonal to the frames 23-1. There are also a plurality of fins 2 on the top.
3-2 are arranged in parallel with the frame 23-1, and a pipe 23-3 with excellent heat conduction, which has nipples 23-3a formed at both ends, is communicated with each fin 23-2 and reciprocated to The heat exchanger 23 is formed with a saddle portion 23a at the bottom, and the saddle portion 23a straddles the motor 6-2 of the pump unit 6 as shown in FIG.
3 is disposed astride the fan unit 7 at a position close to the fan unit 7.

Then, as shown in FIG. 3, the pump 6-
1, the inlet nipple 23-3a and the outlet nipple 23-3a of the heat exchanger 23, and the flow rate sensor 5 are connected by a hose 4, and the pump 6
-1, the suction port 6-1a and the outlet of the flow rate sensor 5, and a conduction cooling module (not shown) are
The piping is done in

In addition, in the third embodiment, as shown in FIG. 5, the pump 16-1 and the impeller 16-3 are driven by a
A pump unit 16 similar to that of the first embodiment, which is directly connected to both ends of the rotating shaft of the case 38, is installed inside a side wall facing the exhaust port 38b of a case 38, which has an intake port 38a and an exhaust port 38b formed on two orthogonal surfaces. At the same time, a heat exchanger 23 having a saddle portion 23a at the lower center shown in FIG. 4 is attached to this pump unit 1.
The impeller 16-3 is disposed straddling the pump 16-1 of No. 6 and close to the impeller 16-3.

Similar to the second embodiment, a flow rate sensor 5 is disposed near the pump unit 16, and the outlet 16-1b of the pump 16-1 and the heat exchanger 2 are connected to each other.
3 and the outlet of the heat exchanger 23 and the flow rate sensor 5 are connected by a hose 4, and the suction port 16-1a of the pump 16-1 and the outlet of the flow rate sensor 5 are connected to a conduction cooling module (not shown). Piping is done with a rubber hose.

With the above configuration, in the second embodiment, the installation space for the fan motor, fan sensor, and heat exchanger can be reduced compared to the conventional one, and in the third embodiment, compared to the conventional one, Compared to the example, the volume corresponding to the installation space of the heat exchanger can be made smaller.

The cooling water supply device according to the fourth embodiment is shown in FIG.
As shown in the figure, there is a hole A penetrating from one side at the fixing position of the heat exchanger 3 in the upper part where the main body 41-1 and the lid 41-2 are integrated.
1 and a hole A2 which is not penetrated, and a hole D which is also penetrated and a hole C which is not penetrated at the fixed position of the pump 6-1 at the lower part, and a hole B1 which is not penetrated at the mounting position of the flow rate sensor 5.
and B2, and between the hole A2 and the hole B1 and the hole B2.
A cooling water flow path 41-1a is provided between the hole C and the hole C.

A plurality of fastening holes are formed on one side of the main body 41-1, and a nipple 41 as shown by a broken line is connected to a conduction cooling module (not shown) on the other side.
-2 is passed through the holes A1 and D to form a protruding piping board 41.

As shown in FIG. 6, this piping board 41 is provided with a nipple 4 on the side facing the exhaust port 48b of a case 48 formed on two sides orthogonal to each other with an intake port 48a and an exhaust port 48b.
1-2 is fixed so as to protrude from the outer surface side, and the heat exchanger 3 is fixed to the upper inner surface side of the piping board 41 so as to face the intake port 48a of the case 48, and also to face the exhaust port 48b. A conventional fan unit 7 equipped with a fan sensor 7-3 is disposed inside the heat exchanger 3, and two holes A1 and A2 provided in the piping board 41 are connected to the inlet/outlet of the heat exchanger 3, as shown in FIG. A pump unit 6, in which a pump 6-1 and a motor 6-2 are directly connected, is fixed to the lower part of the inner surface by connecting with an O-ring (not shown), and its suction port and hole D of the piping board 41, and its discharge port and hole C. are connected by an O-ring (not shown), and the two holes B of the piping board 41 are connected by an O-ring (not shown).
The flow rate sensor 5 is fixed so that the flow rate sensor 1, B2 and the inlet/outlet of the flow rate sensor 5 are connected.

Further, in the fifth embodiment, as shown in FIG. 8, the piping board 41 is placed at a position facing the exhaust port 58b of the case 58 with the nipple 41-2 protruding outward as in the fourth embodiment. The heat exchanger 3 is also fixed to the upper part of the inner surface of the piping board 41 so as to face the intake port 58a of the case 58, and the pump 16-1 and the impeller 16 are fixed to the lower part thereof.
The impeller 16-3 of the pump unit 16 is arranged inside the exhaust port 58b of the case 58 by disposing the pump unit 16 and the flow rate sensor 5, which are directly connected to both ends of the rotating shaft of the drive motor 16-2. is located, and the flow path 4 is installed in the piping board 41 from the suction port of the pump 16-1 to the outlet of the heat exchanger 3 via the flow rate sensor 5.
1-1a.

As a result of the above, piping using the hose 4 inside the case is no longer necessary, so that the reliability of connections within the device can be improved and the installation space for the heat exchanger can be reduced.

The cooling water supply device according to the sixth embodiment is shown in FIG.
0, from position A1 corresponding to the outlet of heat exchanger 3 to position D corresponding to the suction port of pump 16-1 of pump unit 16 with respect to a flat plate of a size that is in close contact with heat radiation block 2-2. From the position A2 corresponding to the inlet of the heat exchanger 3 to the B1 position corresponding to the outlet of the flow rate sensor 5, and from the position B2 corresponding to the inlet of the flow rate sensor 5 to the outlet of the pump 16-1. A main body 62-1 is formed in which a water inlet 62-3 for injecting cooling water is provided at a position A1, for example, by carving grooves for the flow paths 62-1a, each of which has a maximum length up to a position C. Then, the above A
1, A2, B1, B2, C, and D, and by tightening the lid 62-2, which has a plurality of fastening holes, the flow path 62-1a is closed. An internal cold plate 62 is formed.

A pump unit has a heat exchanger 3 fixed to the cold plate 62 so as to be connected to the above-mentioned A1 and A2, and an impeller 16-3 directly connected to both ends of the rotating shaft of the drive motor 16-2. 16 pumps 16-
By fixing the inlet and outlet of flow sensor 5 to D and C, and the inlet and outlet of flow sensor 5 to B1 and B2, the cooling water injected into the flow path 62-1a flows through the pump unit 16. The cold air is circulated through the cold plate 62 via the flow rate sensor 5 and the heat exchanger 3 by the drive of the impeller 16-3. A cooling water supply device integrated with the plate 62 is configured.

As shown in FIG. 9, a heat dissipating piston 2 is biased in a protruding direction by a spring 2-4 to a heat generating element 1-2 such as an LSI mounted on a board 1-1 with a printed board unit 1 fixedly attached thereto. When the pump unit 16 is driven by placing the cold plate 62 in close contact with the heat dissipation block 2-2, which has the tip end surface of the heat-generating element 1- 2
The heat is transferred through the heat radiation piston 2-3 and the heat radiation block 2-2 and is cooled by the cold plate 62.

As a result, the performance of the pump unit 16 and the heat exchanger 3 can be selected based on the calorific value of the heating element 1-2, so that the cooling water supply device for the cold plate 62 can be downsized.

[0033]

As is clear from the above description, the present invention has advantages such as an extremely simple structure, a reduction in the number of parts, a reduction in device cost, and a reduction in external dimensions. It is possible to provide a cooling water supply device that can be expected to have significant economic and reliability effects.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the principle of the present invention.

FIG. 2 is a schematic diagram showing a cooling water supply device according to a first embodiment of the present invention.

FIG. 3 is a schematic diagram showing a cooling water supply device according to a second embodiment.

FIG. 4 is a perspective view showing a heat exchanger of a second embodiment.

FIG. 5 is a schematic diagram showing a cooling water supply device of a third embodiment.

FIG. 6 is a schematic diagram showing a cooling water supply device of a fourth embodiment.

FIG. 7 is an exploded perspective view showing main parts of a fourth embodiment.

FIG. 8 is a schematic diagram showing a cooling water supply device of a fifth embodiment.

FIG. 9 is a schematic diagram showing a cooling water supply device of a sixth embodiment.

FIG. 10 is an exploded perspective view of the sixth embodiment.

FIG. 11 is a schematic diagram showing a conventional cooling water supply device.

FIG. 12 is a schematic diagram showing a conventional heating element cooling structure.

[Explanation of symbols] 1 is a printed board unit, 1-1 is a board,
1-2 is a heating element, 2 is a conduction cooling module, 2-1 is a cold plate,
2-1a, 41-1a, 62-1a are channels, 2-2 is a heat radiation block,
2-3 is a heat dissipation piston, 2-4 is a spring, 3 and 23 are heat exchangers, 4 and 9 are hoses, 5 is a flow rate sensor, 6 and 16 are pump units, 6-1 and 16-1 are pumps,
6-1a, 16-1a are suction ports, 6-1b, 16-1b are discharge ports,
6-2 and 16-2 are motors, 7 is a fan unit, 7-1 and 16-3 are impellers,
7-2 is a fan motor, 7-3 is a fan sensor, 18, 28, 38, 48, 58, 68 is a case, 1
8a, 28a, 38a, 48a, 58a are intake ports, 18b, 28b, 38b, 48b, 58b,
68b is an exhaust port, 23a is a saddle portion,
23-1 is the frame, 23-2 is the fin,
23-3 is a pipe, 23-3a, 41-
3 is the nipple, 41 is the piping board, 41-1, 62-1 is the main body,
41-2 is the lid, 62 is the cold plate, 62-3 is the water inlet,

Claims (7)

[Claims] [Claim 1] An intake port (18a) and an exhaust port (1
8b) The exhaust port (18) of the case (18) formed with
b) A pump unit (16) having a pump (16-1) directly connected to one end of a drive motor (16-2) and an impeller (16-3) fixed to the other end is mounted on the side wall opposite to the drive motor (16-2).
) is installed inside the impeller (16-3) and the exhaust port (
A heat exchanger (3) is fixed between the pump (18b) and a cooling water flow rate sensor (5).
16-1) and the heat exchanger (16-1b).
3) and the flow rate sensor (5) are connected to each other. [Claim 2] The exhaust port (28b) of the case (28)
) The motor (6-2) and pump (6-2) are installed on the side wall facing the
1) Fix the pump unit (6) directly connected to the motor (6-2) and the exhaust port (28b).
) A fan unit (7) equipped with a fan sensor (7-3) is disposed between the heat exchanger (23) and the motor (6-2).
), the pump (6-1) and the heat exchanger (2
3) and the flow rate sensor (5) are connected to each other. 3. The impeller (16-2) is fixed to the motor (16-2) by installing the pump unit (16) inside the side wall of the case (38) having the exhaust port (38b).
16-3) and the exhaust port (38b) are opposed to each other, the heat exchanger (23) is installed across the motor (16-2), and a flow rate sensor (5) is provided, and the pump unit (16) pump (16-1) and the heat exchanger (23)
The cooling water supply device according to claim 1, characterized in that the flow rate sensor (5) is connected to the flow rate sensor (5). 4. A plurality of fins (23-2) having excellent thermal conductivity are arranged at the lower part of the opposing frame (23-1) perpendicularly to the frame (23-1) and at the upper part parallel to the frame (23-1). Claim 2 or 3, characterized in that a saddle-shaped space (23a) is provided at the lower center by communicating with each of the fins (23-2) through a pipe (23-3) with excellent heat conduction. 3. The heat exchanger for a cooling water supply device according to 3. 5. Through holes are formed at positions corresponding to the outlet of the heat exchanger (3) and the suction port of the pump (6-1), and holes are formed at the inlet of the heat exchanger (3) and the flow rate sensor (5). ) and between the position corresponding to the outlet of the flow sensor (5) and the position corresponding to the inlet of the pump (6-1) and the outlet of the pump (6-1). the exhaust port of the case (48) (
The pump unit (6) and the flow rate sensor (5) are fixed to the side facing the piping board (48b).
), the heat exchanger (3) is fixed to a position corresponding to the intake port (48a) of the case (48), and the fan unit (7-3) has a fan sensor (7-3).
7) is disposed at the exhaust port (48b), so that the pump (6-1), the heat exchanger (3), and the flow rate are connected to the flow path (41-1a) of the piping board (41). Claim 1 characterized in that the sensor (5) is connected to the sensor (5).
The cooling water supply device described. 6. A pump (16-1) and an impeller (16-3) are attached to the piping board (41) fixed to the side opposite to the exhaust port (58b) of the case (58) having the intake port (58a). ) is installed on both ends of the pump unit (1
6), the heat exchanger (3), and the flow rate sensor (5), the impeller (16-3) of the pump unit (16), the exhaust port (58b), and the heat exchanger (3) are fixed. ) and the inlet port (58a) correspond to each other, the cooling water supply device according to claim 5. 7. A flat plate of a size that can be brought into close contact with the heat radiation block (2-2) is connected between a position corresponding to the outlet of the heat exchanger (3) and the suction port of the pump (16-1), and the heat exchanger. (3) A curved flow path ( A pump (16-1) and an impeller (16-3) are attached to a cold plate (62) which has a water inlet (62-3) installed inside it and a water inlet (62-3).
The heat exchanger (3) and the flow rate sensor (5) are fixedly attached to the pump unit (16), which is arranged on both ends of the pump unit (16), and the heat exchanger (3) and the corresponding intake port and the impeller (1) are connected to each other.
A case (68) equipped with an exhaust port (68b) corresponding to 6-3) is attached, and the cooling water cooled by the heat exchanger (3) by the drive of the pump unit (16) is delivered to the cold plate. A cooling water supply device characterized in that it is configured to circulate through the flow path (62-1a) of (62).