KR101467375B1 - Cooling apparatus for heating element - Google Patents

Abstract

A heating element cooling apparatus is disclosed. A heating element cooling apparatus according to an embodiment of the present invention includes: a housing which is in contact with a heating element and in which cooling water flows; And an impeller rotatably received in the housing, the housing including: a main body to which the impeller is coupled; A first cover portion that is a thermally conductive member that is coupled to the body portion through the impeller and is in contact with the heat generating element; And a cooling water supply portion coupled to the center portion of the impeller and rotated together with the impeller, and supplying the cooling water from the center portion of the impeller toward the first cover portion.

Description

TECHNICAL FIELD [0001] The present invention relates to a COOLING APPARATUS FOR HEATING ELEMENT,

The present invention relates to a heating-element cooling apparatus, and more particularly, to a heating-element cooling apparatus capable of improving cooling efficiency for a heating element.

In general, a central processing unit (CPU) used as a core part of a computer or various electronic control devices is stably operated by lowering the temperature by bonding a cooling device or a heat dissipating device to its surface for stable operation.

As the CPU manufacturing technology developed, the maximum temperature of the CPU was slightly lowered. However, as the computing capacity and the processing speed of the CPU increased, the surface temperature of the recently developed quad core rises to 100 ° C or more It is frequently occurring.

Therefore, the development of a cooling device for cooling the CPU is still in progress.

The CPU cooling apparatus according to the related art has a structure in which a metal block is simply attached to the surface of a CPU by an adhesive or a pressing means to install a heat dissipating plate or a cooling fan is additionally provided on the surface of the heat dissipating plate, Various devices have been proposed, such as cooling the CPU by attaching a thermo-module using a Peltier effect, or a water-cooled cooling device using a water jacket.

In the case of the heat sink formed with the metal block, the heat sink having the low melting point has a merit that the molding is easy and the aluminum alloy is extruded or molded by die casting, and thus the manufacturing and installation cost is low. However, Since the material is low in thermal capacity, the heat dissipation effect is low and the heat conduction difference between the inside and the outside of the heat sink is insignificant, resulting in a low heat radiation efficiency.

In addition, when the cooling fan is installed on the surface of the heat sink, the thermal conductivity of the heat sink itself is low, so that a great effect can not be expected and the noise generated by the cooling fan is fatal.

On the other hand, a block having a plurality of heat-radiating fins may be formed of a single heat-dissipating block using copper having a relatively high thermal conductivity. However, since the melting point of copper is much higher than that of aluminum, It is not easy, and the manufacturing cost is high, resulting in low economical efficiency.

In addition, when the thermoelectric module is used, the cooling efficiency is very high, but it is expensive and has a high power consumption, which is inadequate to be applied to a portable computer requiring low power consumption (power saving) such as a notebook computer.

In addition, since condensation occurs due to a severe temperature difference, dew may be formed on the surface of the CPU and the thermoelectric module, which may cause an electrical abnormality in the peripheral circuit, so that the installation is difficult.

Therefore, recently, a water-cooling type cooling apparatus for cooling a CPU by using cooling water has been developed.

However, since the conventional water-cooled cooling device receives the heat of the CPU through the inner wall close to the CPU, only the cooling water flowing on the inner wall close to the CPU among the cooling water receives the heat of the CPU, The heat of the CPU was not received and the cooling performance was limited.

That is, since the entire cooling water can not be utilized as a heat exchange medium, only the cooling water passing through the side closer to the CPU is utilized as a heat exchange medium, and thus the utilization of cooling water is very low.

Therefore, it is necessary to study the cooling efficiency of cooling the CPU by using the cooling water.

Korean Patent Publication No. 10-2004-0047719 (Toshiba Kabushiki Kaisha) 2004.06.05 Disclosed

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a heating element cooling apparatus which can cool a heating element by using cooling water, while improving cooling efficiency.

According to an aspect of the present invention, there is provided a cooling apparatus comprising: a housing which is in contact with a heating element and in which cooling water flows; And an impeller rotatably received in the housing, the housing including: a main body to which the impeller is coupled; A first cover portion which is a thermally conductive member that is coupled to the body portion with the impeller interposed therebetween and is in contact with the heating element; And a cooling water supply unit coupled to a central portion of the impeller and rotatable together with the impeller, the cooling water supply unit supplying the cooling water from the central portion of the impeller toward the first cover portion.

The housing further includes a cooling water supply passage formed in the main body to guide the cooling water to the cooling water supply portion, wherein the cooling water supply portion has one end communicating with the cooling water supply passage and the other end passing through the main body portion And a hollow cooling water supply pipe connected to the center of the impeller and rotatable together with the impeller, the cooling water passing through the inside of the impeller.

The housing further includes a bearing member that is coupled to the main body and is disposed to surround an outer surface of the cooling water supply pipe and that supports the outer surface of the cooling water supply pipe in contact with the cooling water supply pipe, A thread may be formed on the outer surface of the supply pipe.

The first cover portion may include: a plate coupled to the body portion; And a concave groove portion formed on one surface of the plate facing the impeller and receiving the impeller.

The first cover portion may further include a plurality of concavities and convexities formed on a bottom surface of the concave groove portion.

Wherein the housing further includes a cooling water discharge passage formed in the main body and guiding the discharge of the cooling water accommodated between the main body and the first cover portion, wherein the concave groove has an inside radius of the impeller And may be gradually increased along the rotation direction.

The concave groove portion is formed so that the cooling water circulating along the inner side by the rotation of the impeller is guided to the opening of the cooling water discharge passage, As shown in Fig.

Wherein the main body includes a partition wall for partitioning upper and lower portions of the cooling water supply pipe, the cooling water supply passage being formed at an upper portion of the partition wall and communicating with the cooling water supply pipe, And can be communicated with the concave groove portion.

The housing includes a cooling water supply port coupled to the main body and communicating with the cooling water supply passage and supplying the cooling water; And a cooling water outlet connected to the main body and communicating with the cooling water discharge passage and through which the cooling water is discharged. The cooling water outlet, which is connected to the cooling water supply port and the cooling water discharge port, And a cooler for cooling and supplying the cooling water to the cooling water supply port.

The controller may further include an indicator disposed at an upper portion of the cooling water supply unit to enable confirmation of the supply of the cooling water supplied to the cooling water supply unit.

And an impeller driving unit disposed inside the main body for rotating the impeller by rotating the cooling water supply unit coupled to the impeller, wherein the housing includes a second portion coupled to the main body through the impeller driving portion, And may further include a cover portion.

In the embodiment of the present invention, cooling water is supplied in the direction of the first cover portion contacting the heating element at the central portion of the impeller to intensively cool the first cover portion and rotate the impeller inside the housing to generate vortex in the cooling water, The cooling efficiency can be improved.

Further, since the cooling water supplied to the concave groove portion formed at the central portion of the first cover portion at the center portion of the impeller is pivoted by the impeller while radially flowing in the inner side direction from the bottom face central portion of the concave groove portion, It is possible to further improve the cooling efficiency.

The cooling water circulating inside the concave groove portion due to the rotation of the impeller further increases the vortex intensity by the plurality of irregularities formed on the bottom surface of the concave groove portion, so that the cooling efficiency with respect to the heating element can be further improved.

1 is a perspective view showing a heating body cooling apparatus according to an embodiment of the present invention.
2 and 3 are exploded perspective views illustrating a heating body cooling apparatus according to an embodiment of the present invention.
4 is a plan view showing a first cover according to an embodiment of the present invention.
5 is a perspective view illustrating a first cover according to an embodiment of the present invention.
6 is a perspective view illustrating a main body according to an embodiment of the present invention.
7 is an operational state diagram illustrating a movement path of cooling water according to an embodiment of the present invention.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

In this embodiment, the heating element includes a central processing unit (CPU) of a computer and a heating member such as other electric parts. Hereinafter, a CPU will be described as an example for convenience of explanation.

FIG. 1 is a perspective view showing a heating body cooling apparatus according to an embodiment of the present invention, FIGS. 2 and 3 are exploded perspective views illustrating a heating body cooling apparatus according to an embodiment of the present invention, and FIG. FIG. 5 is a perspective view illustrating a first cover according to an embodiment of the present invention, and FIG. 6 is a perspective view illustrating a main body according to an embodiment of the present invention.

1 to 3, a heating body cooling apparatus according to an embodiment of the present invention includes a housing 100 in contact with a heating element and through which cooling water flows, an impeller 300 housed in the housing 100 and rotated An impeller driving unit 350 that is disposed inside the housing 100 and rotates the impeller 300; a cooling unit 350 that is connected to the housing 100 to cool the heated cooling water discharged from the housing 100, And a cooler 400 for supplying the coolant 400 to the housing 100 and circulating the coolant 400.

The housing 100 directly or indirectly contacts the CPU, and serves to cool the CPU by cooling the heat conducted by the CPU using cooling water.

The housing 100 includes a main body 110 to which the impeller 300 is coupled, a first cover part (not shown) coupled to the lower part of the main body 110 via the impeller 300, A cooling water supply unit 130 coupled to a central portion of the impeller 300 to rotate together with the impeller 300 to supply cooling water from the center of the impeller 300 toward the first cover unit 120, A second cover part 160 coupled to the upper part of the main body part 110 with the first main body part 350 interposed therebetween and a cooling water supply path 140 formed in the main body part 110 for guiding the cooling water to the cooling water supply part 130, A cooling water supply port 170 coupled to the main body 110 and communicating with the cooling water supply passage 140 to supply cooling water to the cooling water supply passage 140, A cooling water discharge passage 145 for guiding the discharge of the cooling water accommodated between the first cover part 120 and the first cover part 120, A cooling water outlet 175 communicating with the water discharge passage 145 and discharging the cooling water flowing along the cooling water discharge passage 145 to the cooler 400 and a cooling water outlet 175 connected to the main body 110, And a bearing member 150 disposed to surround and support the outer surface of the cooling water supply unit 130.

The main body 110 forming the outer surface of the housing 100 and the first cover part 120 and the second cover part 160 may all be made of a thermally conductive member such as copper or aluminum The weight of the entire housing 100 can be reduced by manufacturing only the first cover part 120, which is directly or indirectly contacted with the CPU, which is a heat generating element, and the remainder, by using the heat resistant member.

In the present embodiment, the heating body cooling apparatus further includes a bracket 200 connected to the housing 100 and detachably attaching the housing 100 to a board (not shown) equipped with a CPU.

The bracket 200 serves to mount the main body 110 on a board (not shown) equipped with a CPU, which is coupled to the housing 100, and particularly to the main body 110. The bracket 200 coupled to the main body 110 can be detachably coupled to the board using a fastening member such as a screw.

In this embodiment, the main body 110 supports the impeller 300 and serves to provide a flow path for supplying and discharging cooling water.

The main body 110 is formed with a partition wall 111 for partitioning upper and lower portions. The first cover 120 is coupled to the lower portion of the main body 110 and the second cover 160 is coupled to the main body 110 As shown in FIG.

The upper and lower portions of the main body 110 are sealed by the first cover portion 120 and the second cover portion 160. A first sealing member 181 such as an o-ring is interposed between the lower part of the main body 110 and the first cover part 120 and the upper part of the main body part 110, A second sealing member 183 such as an O-ring is interposed between the first sealing member 160 and the second sealing member 183. [

In this embodiment, the impeller 300 is disposed between the main body 110 and the first cover part 120. Specifically, the impeller 300 is disposed between the partition 111 and the first cover 120 provided in the main body 110. The impeller 300 is disposed between the partition 111 and the first cover 120, And the cooling water is circulated between the partition wall 111 and the first cover part 120. [

In this embodiment, the first cover part 120 is coupled to the lower part of the main body part 110 and directly or indirectly contacts the CPU to receive heat generated by the CPU. Therefore, the first cover portion 120 can be made of a thermally conductive member such as copper having a high thermal conductivity.

4 and 5, the first cover 120 includes a plate 121 coupled to a lower portion of the main body 110, and a second plate 120 formed on one surface of the plate 121 facing the impeller 300 A concave groove portion 123 in which the impeller 300 is accommodated and a plurality of concave and convex portions 125 formed on the bottom surface of the concave groove portion 123. [

Heat generated in the CPU is conducted along the first cover portion 120 and cooled by the cooling water.

Therefore, the amount of heat conducted along the first cover part 120 by the CPU is determined by the temperature at the surface of the first cover part 120 that is thin and in contact with the CPU of the first cover part 120, 120, the larger the difference in temperature on the surface contacting the cooling water is.

In order to reduce the thickness of the first cover part 120, a concave groove part 123 is formed on one surface of the plate 121 facing the impeller 300, and an impeller (not shown) 300).

A plurality of projections and depressions 125 are formed on the bottom surface of the concave groove portion 123 contacting the cooling water in order to increase the temperature difference between the both surfaces of the first cover portion 120. [

It is possible to increase the surface area in contact with the cooling water by forming a plurality of projections and depressions 125 on the bottom surface of the concave groove portion 123. Also when the cooling water is circulated in the concave groove portion 123 by the impeller 300, The vortex intensity of the cooling water is further increased by the plurality of projections and depressions 125 formed on the bottom surface of the groove portion 123.

The cooling water accommodated between the partition wall 111 and the first cover part 120 of the main body 110 is heated by the heat conducted from the CPU so that new cooling water is supplied between the partition wall 111 and the first cover part 120 Lt; / RTI >

The cooling water is supplied in the direction of the first cover part 120 from the center of the impeller 300 and is received between the partition wall 111 and the first cover part 120 in this embodiment.

Specifically, the cooling water is supplied from the central portion of the impeller 300 toward the first cover portion 120 through the cooling water supply portion 130 coupled to the center portion of the impeller 300.

The cooling water supply unit 130 is connected to the central portion of the impeller 300 through the partition wall 111 of the main body 110 and is rotated together with the impeller 300. The cooling water supply unit 130 includes a hollow cooling water supply pipe 131).

That is, the cooling water supply pipe 131 serves to supply cooling water between the partition wall 111 and the first cover part 120, and at the same time, serves as a rotating shaft of the impeller 300.

The cooling water supply passage 140 for guiding the cooling water to the cooling water supply pipe 131 is formed on the upper part of the main body 110, that is, the upper part of the partition wall 111, for supplying the cooling water through the cooling water supply pipe 131.

For example, the cooling water is supplied between the partition wall 111 and the first cover part 120 through the cooling water supply pipe 131 along the cooling water supply passage 140 formed in the upper part of the partition wall 111.

That is, the cooling water is supplied to the center portion of the bottom surface of the concave groove portion 123 formed in the first cover portion 120 through the cooling water supply pipe 131 and radially flows in the inner side direction of the concave groove portion 123.

This is because the center portion of the first cover portion 120, that is, the center portion of the concave groove portion 123 is heated to the highest temperature when the center portion of the first cover portion 120 is in contact with the central portion of the CPU, Is first supplied to the central portion of the concave groove portion 123 to intensively cool the center portion of the concave groove portion 123 to improve the cooling efficiency with respect to the heating element.

Further, since the cooling water supplied to the center portion of the bottom surface of the concave groove portion 123 is pivoted by the impeller 300 while radially flowing in the inner side direction from the bottom surface center portion of the concave groove portion 123, the vortex strength of the cooling water is further increased So that the cooling efficiency with respect to the heating element can be further improved.

2 and 3, the heating body cooling apparatus according to the present embodiment may further include an indicator 500 so as to check whether cooling water is supplied to the cooling water supply unit 130 .

The indicator 500 is disposed on the upper portion of the cooling water supply pipe 131 and has a plurality of wings 510 radially arranged with respect to the central portion.

When the cooling water is supplied to the cooling water supply pipe 131 and the radial wing portion 510 is rotated by the cooling water, the indicator 500 is a kind of sensor that senses the supply of the cooling water.

On the other hand, the impeller 300 is disposed in the radial direction around the cooling water supply pipe 131 so that the cooling water supplied to the central portion of the bottom surface of the concave groove portion 123 can flow more smoothly and smoothly in the inner side direction of the concave groove portion 123 (Not shown).

The plurality of blades 310 apply centrifugal force to the cooling water in the concave groove portion 123 when the impeller 300 rotates so that the cooling water accommodated in the concave groove portion 123 is centrifugally moved by the centrifugal force on the inner surface of the concave groove portion 123 And at the same time, pivots along the inner surface of the concave groove 123.

The cooling water circulating along the inner surface of the concave groove portion 123 is discharged through the cooling water discharge passage 145 formed in the main body portion 110 as shown in Fig. The cooling water discharge passage 145 is formed in the lower portion of the partition wall 111 and communicates with the concave groove portion 123 to discharge cooling water circulating along the inner side surface of the concave groove portion 123.

4, the inner side radius of the concave groove portion 123 gradually increases along the rotational direction of the impeller 300. As shown in Fig.

That is, along the direction of rotation of the impeller 300, the concave groove portion 123 located on the left side of FIG. 4 from the interval D1 between the inner side surface of the concave groove portion 123 located on the right side of FIG. 4 and the outer side surface of the impeller 300 And the outer side surface of the impeller 300 is larger. Thus, the gap between the inner surface of the concave groove 123 and the outer surface of the impeller 300 gradually increases along the rotational direction of the impeller 300.

Here, the inner side radius of the concave groove portion 123 facing the opening of the cooling water discharge passage 145 is largest. This is because when the cooling water circulating along the inner surface of the concave groove portion 123 flows into the opening of the cooling water discharge passage 145 by the impeller 300, the rotating cooling water hits the opening of the cooling water discharge passage 145, So that the flow velocity is prevented from being lowered.

5, the cooling water discharge passage 145 is formed so that the cooling water circling along the inner side surface of the concave groove portion 123 is guided to the opening of the cooling water discharge passage 145 by the rotation of the impeller 300, The inner side surface of the concave groove portion 123 facing the opening of the cooling water discharge passage 145 is formed to be sloped gently in the direction of the opening of the cooling water discharge passage 145 from the bottom.

That is, the concave groove portion 123 includes an inclined portion 123a formed such that the inner side surface of the concave groove portion 123 facing the opening of the cooling water discharge passage 145 is gently inclined from the bottom toward the top. As a result, the cooling water circling along the inner surface of the concave groove portion 123 is smoothly discharged to the cooling water discharge flow path 145 along the inclined portion 123a.

The heated cooling water discharged to the cooling water discharge passage 145 flows into the cooler 400 through the cooling water outlet 175 and the second pipe 430 coupled to the main body 110, The cooling water is supplied to the cooling water supply passage 140 through the cooling water supply port 170 coupled to the first pipe 410 and the main body portion 110. In this way, the cooling water is heat-exchanged in the housing 100, cooled by the cooler 400, and circulated to the housing 100 again.

Since the impeller 300 rotates the cooling water supply pipe 131 by the rotation axis, the fixed partition wall 111 is disposed to surround the outer surface of the cooling water supply pipe 131 and the outer surface of the cooling water supply pipe 131 is contacted The bearing member 150 is engaged.

In this embodiment, in order to reduce the friction between the cooling water supply pipe 131 and the bearing member 150 because the cooling water supply pipe 131 to which the impeller 300 is coupled is rotated in contact with the outer surface of the bearing member 150, And a screw thread 133 is formed on the outer surface of the cooling water supply pipe 131.

In this embodiment, the cooling water is supplied to the cooling water supply pipe 131 through the cooling water supply passage 140 formed on the partition wall 111 of the main body 110, so that the cooling water is supplied to the outer surface of the cooling water supply pipe 131 So that the cooling water can be supplied between the bearing member 150 and the cooling water supply pipe 131 as a lubricant.

In this embodiment, the impeller driving unit 350 is mounted on the inside of the housing 100, specifically, above the partition 111 of the main body 110 to rotate the impeller 300.

A mounting groove 113 is formed in the upper part of the partition wall 111 to receive the impeller driving unit 350. The impeller driving unit 350 is fixed to the mounting groove 113 and rotates when the impeller 300 rotates And does not rotate along the impeller 300.

The impeller driving unit 350 is preferably applied as a brushless motor including a magnet mounted on the seating groove 113. Since such a brushless motor is a widely commercialized component, a detailed description thereof will be omitted.

The third sealing member 185 is coupled to the upper portion of the seating groove 113 so that the impeller driving unit 350 is seated in the seating groove 113 while being isolated from the cooling water supply passage 140.

The upper portion of the main body 110 is sealed by engaging the second cover portion 160 with the impeller driving portion 350 interposed therebetween.

The operation of the heating body cooling apparatus according to an embodiment of the present invention will now be described.

7 is an operational state diagram illustrating a movement path of cooling water according to an embodiment of the present invention.

2, 3, and 7, the cooling water introduced into the upper portion of the main body 110 through the cooling water supply port 170 is supplied to the cooling water supply passage 140 formed in the upper portion of the main body 110 .

The cooling water supplied to the cooling water supply passage 140 is supplied to the lower portion of the main body portion 110 and the center portion of the first cover portion 120 through the cooling water supply pipe 131 constituting the rotation axis of the impeller 300.

This is because the center portion of the first cover portion 120 is further heated by the heat conducted by the CPU, thereby intensively cooling the center portion of the first cover portion 120 to improve the cooling efficiency.

The cooling water supplied to the cooling water supply passage 140 is supplied to the cooling water supply pipe 131 in order to reduce friction between the bearing member 150 and the cooling water supply pipe 131 when the impeller 300 rotates, And is supplied to the lower portion of the main body 110 along the threaded thread 133 formed on the outer surface of the pipe 131.

In order to increase the amount of heat transferred from the CPU, a concave groove 123 is formed in the first cover 120 to shorten the conduction path of heat conducted by the CPU.

The cooling water supplied between the lower part of the main body part 110 and the first cover part 120 rotates along the concave groove part 123 of the first cover part 120 by the rotation of the impeller 300, Cools the conducted heat.

The impeller 300 can mix the cooling water held between the lower portion of the main body 110 and the first cover portion 120 to be more uniform and maintain a uniform temperature as a whole, The vortex intensity is increased and the cooling efficiency for the heat conducted to the first cover part 120 can be improved.

In order to increase the contact area between the bottom surface of the concave groove portion 123 and the cooling water, a plurality of concave and convex portions 125 are formed on the bottom surface of the concave groove portion 123. When the cooling water is rotated in accordance with the rotation of the impeller 300, the vortex intensity of the cooling water is further increased by the plurality of protrusions 125, so that the cooling efficiency with respect to the heat conducted to the first cover part 120 can be further improved .

The cooling water accommodated between the lower part of the main body part 110 and the first cover part 120 is heated after cooling the heat conducted to the first cover part 120. The heated cooling water is heated by the rotation of the impeller 300 And is discharged through the cooling water discharge passage 145 formed in the lower portion of the main body portion 110 while turning along the inner side surface of the concave groove portion 123.

The cooling water flows into the cooler 400 along the cooling water discharge passage 145 and the cooling water outlet 175 and the second pipe 430 and is then cooled and then supplied to the first pipe 410 and the cooling water supply port 170 To the cooling water supply passage (140) of the main body (110).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

100: housing 110:
111: partition wall 113: seat groove
120: first cover part 121: plate
123: concave groove portion 125: concave and convex
130: cooling water supply unit 131: cooling water supply pipe
140: Cooling water supply channel 145: Cooling water discharge channel
150: bearing member 160: second cover part
170: Cooling water supply port 175: Cooling water discharge port
200: Bracket 300: Impeller
350: Impeller driving part 400: Cooler
410: first piping 430: second piping
500: Indicator

Claims (11)

A housing which is in contact with a heating element and in which cooling water flows; And
And an impeller accommodated in the housing and rotated,
The housing includes:
A main body to which the impeller is coupled;
A first cover portion which is a thermally conductive member that is coupled to the body portion with the impeller interposed therebetween and is in contact with the heating element;
A cooling water supply unit coupled to a central portion of the impeller and rotatable together with the impeller, for supplying the cooling water from the central portion of the impeller toward the first cover portion; And
And a cooling water supply passage formed in the main body to guide the cooling water to the cooling water supply portion,
The cooling water supply unit
And a hollow cooling water supply pipe through which one end portion communicates with the cooling water supply flow passage and the other end portion passes through the main body portion and is coupled to the center portion of the impeller and rotated together with the impeller, . delete The method according to claim 1,
The housing includes:
And a bearing member that is coupled to the main body and is disposed to surround the outer surface of the cooling water supply pipe and that supports the outer surface of the cooling water supply pipe,
And a screw thread is formed on the outer surface of the cooling water supply pipe which contacts the inner surface of the bearing member. The method according to claim 1,
The first cover part
A plate coupled to the body portion; And
And a concave groove portion formed on one side of the plate facing the impeller, the concave groove portion accommodating the impeller. 5. The method of claim 4,
The first cover part
Further comprising a plurality of concave and convex portions formed on a bottom surface of the concave groove portion. 5. The method of claim 4,
The housing includes:
Further comprising a cooling water discharge passage formed in the main body to guide the discharge of the cooling water received between the main body and the first cover,
Wherein the concave-
And the inner side radius is gradually increased along the rotational direction of the impeller. The method according to claim 6,
Wherein the concave-
And is inclined in the direction of the opening of the cooling water discharge passage from the inner side bottom surface opposed to the opening of the cooling water discharge passage so that the cooling water circling along the inner side by the rotation of the impeller is guided to the opening of the cooling water discharge passage And a cooling unit for cooling the heating element. The method according to claim 6,
Wherein the main body portion includes upper and lower portions partitioned by the cooling water supply pipe through the center portion,
Wherein the cooling water supply passage is formed at an upper portion of the partition wall and communicates with the cooling water supply pipe, and the cooling water discharge passage is formed at a lower portion of the partition wall to communicate with the concave groove portion. The method according to claim 6,
The housing includes:
A cooling water supply port coupled to the main body and communicating with the cooling water supply passage and supplying the cooling water; And
And a cooling water outlet connected to the body portion and communicating with the cooling water discharge passage and through which the cooling water is discharged,
And a cooler connected to the cooling water supply port and the cooling water discharge port, respectively, for cooling the heated cooling water discharged from the cooling water discharge port and supplying the cooling water to the cooling water supply port. The method according to claim 1,
And an indicator disposed at an upper portion of the cooling water supply unit to enable the supply of the cooling water supplied to the cooling water supply unit to be confirmed. The method according to claim 1,
And an impeller driving unit disposed inside the main body and rotating the impeller by rotating the cooling water supply unit coupled to the impeller,
The housing includes:
And a second cover portion coupled to the main body portion via the impeller driving portion.

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