JP2011012931A - Liquid cooling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid cooling device in a closed type free from the possibility of process water contamination, providing heat exchanger efficiency equivalent to or more than that of an open type and having a compact structure as a whole.SOLUTION: The liquid cooling device 1 comprises; a horizontally long casing 2 in which cooling liquid passes through an inner lower part and air passes through the inner side above the inner lower part; a rotating cylindrical body 4 made of a material with high thermal conductivity and laterally installed within the casing 2 and inside of which cooled liquid passes through; and heat transfer fins 5 protruded in an outer peripheral part of the rotating cylindrical body 4 and each having a portion coming into contact with the cooling liquid when positioned on the lower side during rotation of the rotating cylindrical body 4.

Description

  The present invention relates to a liquid cooling apparatus such as a cooling tower, and more particularly to a hermetic liquid cooling apparatus.

  In the conventional cooling tower, where air and water are in gas-liquid contact and obtain a low temperature by evaporation of water, an open cooling tower in which water is open to the atmosphere, and a sealed type in which water is not open to the atmosphere There is a cooling tower.

  The open-type cooling tower has a problem of process water contamination such as air contamination and bacteria mixed in the process water.

  On the other hand, in the closed type, the problem of process water contamination is solved, but there is a problem that the efficiency is low and the apparatus becomes large.

  As an example of a hermetic cooling tower, a hermetic type is provided with a hermetic heat exchanger, in which water is sprayed from the upper water tank, and the circulating cooling water flowing in the hermetic heat exchanger is indirectly cooled. A cooling tower is known (see, for example, Patent Document 1).

  Further, in the cooling tower that cools the hermetic heat exchanger only with air, a blowing pipe is provided on the upper surface of the cooling tower, the blowing direction of the blowing pipe is inclined with respect to the vertical axis, and the blowing direction of the blowing pipe There is an example in which directional control blades are provided so that automatically faces the leeward side (see, for example, Patent Document 2).

JP 2008-309413 A JP 2006-194527 A

  The cooling tower described in Patent Document 1 or Patent Document 2 performs cooling of the hermetic heat exchanger only with water or air, which has low heat exchanger efficiency and requires a separate blower and watering pump. was there.

  In addition, as described above, the open cooling tower with high heat exchanger efficiency has problems such as contamination of process water, contamination of bacteria, and reduction of process water.

  The present invention eliminates these problems and provides a liquid cooling device having a sealed structure that is free from the risk of process water contamination, and that has a heat exchanger efficiency equivalent to or better than that of an open type, and further has a compact structure as a whole. The purpose is to provide.

  In order to achieve the above-mentioned object, the present invention has a horizontally long casing in which a cooling liquid passes through the lower part of the interior and air passes through the upper part thereof, and a liquid to be cooled is installed in the casing so as to be arranged in the casing. A rotating cylinder made of a high thermal conductivity material that passes therethrough, and a transmission projecting on the outer peripheral surface of the rotating cylinder and partially in contact with the cooling liquid when positioned on the lower side during rotation of the rotating cylinder. Consists of heat fins.

  According to the present invention, it is a hermetic cooling tower that is free from process water contamination, can obtain a heat exchanger efficiency equal to or higher than that of an open type, and can provide a liquid cooling device having a small and compact structure as a whole. Have.

It is a longitudinal cross-sectional view of the liquid cooling device of Example 1 of this invention. It is a top view of the liquid cooling device. FIG. 2 is a cross-sectional view taken along line XX in FIG. 1. It is a perspective view of the location of an auxiliary stripping blade.

  The example of the form for carrying out the present invention is shown below.

  1 is a longitudinal sectional view of a liquid cooling apparatus according to a first embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a sectional view taken along line XX in FIG.

  Reference numeral 1 denotes a liquid cooling device, 2 denotes a casing of the liquid cooling device 1, and the casing 2 includes a horizontally long cylindrical body 2c having side walls 2a and 2b at left and right ends, and the side wall is formed in the cylindrical body 2c. Annular partition walls 2d, 2e, and 2f are provided at intervals from 2a and 2b, respectively. A refrigerant water inflow pipe 3a is connected to the lower wall of the cylindrical body 2c between the left side wall 2a and the left side wall 2d, and between the right side wall 2f and the right side wall 2e. A refrigerant water outlet pipe 3b is connected to the lower wall of the cylindrical body 2c.

  An air inlet 3c is connected to the upper surface wall of the cylindrical body 2c between the side wall 2a and the partition wall 2d, and the upper surface wall of the cylindrical body 2c between the partition wall 2b and the partition wall 2f. An air discharge port 3d is connected to the air.

  Reference numeral 3e denotes a fan provided on the outer peripheral surface of the rotary cylinder 4 in the housing 2 near the discharge port 3d. The fan 3e rotates with the rotary cylinder 4 and sucks air from the suction port 3c. Thus, air is discharged from the discharge port 3d, and the intake and exhaust of air is effectively performed.

  Reference numeral 4 denotes a rotating cylinder, and the rotating cylinder 4 is made of a metal cylinder such as copper having good thermal conductivity, and a large number of heat transfer fins 5 are arranged at equal intervals on the outer peripheral surface of the rotating cylinder 4. Projected.

  These heat transfer fins 5 are in an annular shape made of a metal having good thermal conductivity, and have a plurality of circular through holes 5a at equal intervals on the same circumference.

  Further, the outer peripheral end of the heat transfer fin 5 is formed so as to be close to the inner surface of the cylindrical body 2c.

  Reference numeral 6 denotes a fixed shaft that passes through the center of the rotating cylinder 4, 7 a denotes an inflow chamber of process water that is a liquid to be cooled, 7 b denotes an outflow chamber of the process water, and the inflow chamber 7 a The outflow chamber 7 b is provided on the side of the right end of the housing 2 and is provided on the side of the left end.

  One end of the rotating cylinder 4 opens into the inflow chamber 7a, and the other end opens into the outflow chamber 7b.

  A timing pulley 8a is fitted to the end of the rotating cylinder 4. The rotating cylinder 4 is rotated by a motor 8b via a timing belt 8c.

  Reference numeral 9 denotes a stripping blade. The stripping blade 9 is formed of a horizontally long plate-like body, and protrudes from the fixed shaft 6 toward the inner wall of the rotating cylinder 4 along the fixed shaft 6.

  That is, the stripping blades 9 are fixed one by one above and below the fixed shaft 6 and are formed so that the tip ends of the stripping blades 9 are close to the inner peripheral surface of the rotating cylinder 4. .

  Further, the stripping blade 9 has a horizontally long quadrilateral through-hole 9 a, and a plurality of the through-holes 9 a are provided along the entire length of the stripping blade 9.

  7c is an inflow pipe of process water communicating with the inflow chamber 7a, 7d is an outflow pipe of process water communicating with the outflow chamber 7b, 7e is a degassing pipe communicating with the inflow chamber 7a, and 7f is interposed in the degassing pipe 7e. An open / close valve, 7g is a drain pipe connected to the outflow chamber 7b, 7h is an open / close valve interposed in the drain pipe 7g, 3f is a drain pipe connected to the lower surface of the housing 2 below the fan 3e, Reference numeral 3g denotes an on-off valve interposed in the drain pipe 3f.

  Next, the operation and effect of the liquid cooling apparatus 1 of the present embodiment will be described.

  Refrigerant water is supplied from the inflow pipe 3a so that the coolant water flows out from the outflow pipe 3b while filling the lower portion of the housing 2 with the coolant water, and the process water that has flowed in from the inflow pipe 7c once flows in. After being accommodated in the chamber 7a, the rotary cylinder 4 is allowed to pass through, and once accommodated in the outflow chamber 7b, it is discharged from the outflow pipe 7d. In this state, the motor 8b is driven to rotate, and the rotating cylinder 4 is rotated at a predetermined rotational speed via the timing belt 8c and the timing pulley 8a.

  With the rotation of the rotating cylinder 4, the fan 3e also rotates, and in the state where the air from the inflow pipe 3c passes through the upper part of the coolant water in the housing 2 and flows out from the outflow pipe 3d by the rotating fan 3e. The air passes through the through holes 5a of all the heat transfer fins 5 that rotate.

  The heat transfer fins 5 rotate in contact with the coolant water at the lower portion thereof to adhere the coolant water to the surface in a thin film shape, and the thin film coolant water is located above the heat transfer fins 5. Contacting the air passing through the through holes 5a, the heat of evaporation is taken away by the air, and as a result, each heat transfer fin 5 is cooled.

  The rotating housing 4 having good thermal conductivity is also cooled through the heat transfer fins 5 thus cooled.

  On the other hand, the process water that flows while adhering to the inner peripheral surface of the rotating cylinder 4 and swirling is agitated by the stripping blade 9 provided on the fixed shaft 6 that passes through the center of the rotating cylinder 4 and the The process water is peeled off due to the proximity to the inner peripheral surface of the rotary cylinder 4, and thus the process water is cooled very efficiently by the cooled rotary cylinder 4.

  Since the rotating cylinder 4 is rotated in this way, the cooling temperature of the process water can be controlled by adjusting the rotation speed, and the air is supplied from the outside by the fan 3e provided on the outer peripheral surface of the rotating cylinder 4. Since suction and self-procurement are required, no other large blower or watering pump is required, and the apparatus can be made compact and compact.

  Furthermore, the scraping blade 9 automatically scrapes off the scale adhering to the inner peripheral surface of the rotating cylinder 4 to prevent deterioration of the heat transfer coefficient due to the scale adhering. It has the effect of providing an excellent liquid cooling device.

  Further, when a large amount of coolant water is accompanied by the heat transfer fins 5 projecting from the outer peripheral surface of the rotating cylinder 4, auxiliary stripping blades 10 are attached to the inner peripheral surface of the housing 2 as shown in FIG. 4. It is preferable.

  That is, the auxiliary stripping blade 10 is formed of a belt-like plate, and the respective heat transfer fins 5 intervene on the inner side thereof, and the notches 10a close to both surfaces of the heat transfer fins 5 are formed, respectively. The cooling water of the heat transfer fins 5 is peeled off by the edge so that the refrigerant water excessively entrained in the heat transfer fins 5 is entrained in the heat transfer fins 5 to prevent the cooling effect of each heat transfer fin 5 from being lowered. To.

  The liquid cooling device of the present invention is used as a hermetic cooling tower for supplying cooling water to air conditioning equipment, mechanical equipment, and the like.

DESCRIPTION OF SYMBOLS 1 Liquid cooling device 2 Case 4 Rotating cylinder 5 Heat-transfer fin 5a, 9a Through-hole 6 Fixed shaft 9 Stripping blade 10 Auxiliary stripping blade

Claims (6)

  A horizontally long casing in which the cooling liquid passes through the lower part of the interior and air passes through the upper part thereof, and a rotating cylinder made of a high thermal conductivity material that is installed in the casing and through which the liquid to be cooled passes. And a liquid cooling device comprising heat transfer fins that project from the outer peripheral surface of the rotating cylinder and that partially contact the cooling liquid when positioned on the lower side during rotation of the rotating cylinder.   The liquid cooling device according to claim 1, wherein a fan that sucks and exhausts the air is provided on an outer peripheral surface of the rotating cylinder.   The liquid cooling device according to claim 1, wherein the heat transfer fin includes a plurality of annular bodies having through holes.   The rotating cylinder is formed in a cylindrical shape, and has a fixed shaft that passes through the axial center portion of the rotating cylinder, and is peeled along the fixed axis from the fixed shaft toward the inner wall of the rotating cylinder. The liquid cooling device according to claim 1, further comprising a take-off blade.   The liquid cooling device according to claim 4, wherein the stripping blade is a horizontally long plate-like body having a through hole.   The plate-shaped auxiliary peeling blade having notches close to both surfaces of each heat transfer fin and the heat transfer fins intervening is provided on the inner peripheral surface of the casing. Or a liquid cooling device according to claim 1.

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