JP5471262B2 - Heat exchanger - Google Patents

Description

  The present invention relates to a heat exchange device for liquid such as warm water.

  Conventionally, as this kind of heat exchanging device, a cylindrical heat transfer body formed of a material having good heat conductivity, a rotation driving means for rotating the heat transfer body, and an inside of the heat transfer body are arranged. An internal fixed blade that peels off the boundary film in proximity to or in sliding contact with the inner peripheral surface of the heat transfer body, and an external fixed blade that peels off the boundary film in proximity to or in sliding contact with the outer peripheral surface of the heat transfer body, An apparatus is known in which a cylindrical heat transfer body is provided so as to rotate in a jacket, and heat is exchanged between the liquid flowing in the jacket and the liquid flowing in the heat transfer body (Patent Document 1). reference).

Japanese Patent Laid-Open No. 2005-9804

  According to this conventional heat exchange device, the cylindrical heat transfer body rotates in the liquid in the jacket so as to exchange heat with the liquid in the jacket and the liquid having a temperature difference passing through the heat transfer body. Therefore, there is a risk that both liquids may mix from the slight friction part of the sliding part, and there are many sliding parts, so if the seal for preventing liquid leakage is tightened, the frictional power will increase rapidly and the operation will There was a problem that became difficult.

  An object of the present invention is to solve these problems and to provide a heat exchange device capable of smooth operation without mixing both hot and cold liquids.

In order to achieve this object, the present invention provides a rotatable heat transfer cylinder formed of a material having good thermal conductivity, the lower end of which is closed by a bottom plate and supported in the vertical direction, and the upper end of the heat transfer cylinder. A rotating annular body that is fixed above the liquid surface of the liquid outside the heat transfer cylinder, a rotation driving means that rotationally drives the rotary annular body , and a central portion of the heat transfer cylinder In a stationary state, the lower end portion is closed by a small bottom plate and a through hole is formed in the lower portion of the peripheral wall, and an inflow pipe for injecting liquid from above, and a central hole of the rotating annular body And an outflow pipe communicating with the heat transfer cylinder and flowing out of the liquid, and an inner peripheral surface of the heat transfer cylinder fixed to the outer peripheral surface of the inflow pipe. An inner fixed blade that peels off the film, and a boundary between the outer peripheral surface of the heat transfer cylinder and the outer fixed surface. Characterized by comprising an external fixed blade strip the.

  According to the present invention, there is no risk of mixing both hot and cold liquids, and there is an effect that smooth operation can be performed and efficient heat exchange is possible.

It is a longitudinal cross-sectional view of the heat exchange apparatus of Example 1 of this invention.

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

  FIG. 1 is a longitudinal sectional view of a heat exchange device according to a first embodiment of the present invention.

  Reference numeral 1 denotes a heat exchanging device, 2 denotes a heat transfer cylinder made of a metal having good heat conductivity and extending in the vertical direction. The heat transfer cylinder 2 has a bottom plate 2a fixed to a lower end thereof in a sealed state, and the bottom plate It is rotatably supported via a sphere 4 between the lower surface of 2a and the upper surface of the base body 3.

  Reference numeral 5 denotes an inflow pipe which is an inflow means. The inflow pipe 5 is provided in a stationary state at the center of the heat transfer cylinder 2, and a small bottom plate 5a is fixed and sealed at the lower end of the inflow pipe 5 and the inflow pipe A through-hole 6 is formed at the lower end of the peripheral wall 5, and the liquid flowing downward in the inflow pipe 5 flows out from the through-hole 6 into the heat transfer cylinder 2.

  In addition, a plurality of peeled inner fixed blades 7 are attached to the outer surface of the peripheral wall of the inflow pipe 5 so that the outer edges of the inner fixed blades 7 are close to or in sliding contact with the inner surface of the heat transfer cylinder 2. did.

  Reference numeral 8 denotes a plurality of support posts that are inserted through holes formed in the base body 3 at positions outside the heat transfer cylinder 2 and fixed thereto, and external support blades 9 for removing the film are attached to the support posts 8. The inner edge of the external fixed blade 9 is close to or slidably contacted with the outer surface of the heat transfer cylinder 2.

  Reference numeral 10 denotes a supporting annular body. The supporting annular body 10 is fixed to the upper end portion of the support column 8, and a rotating annular body 11 is rotatably inserted and supported in the center hole of the supporting annular body 10. .

  The upper end of the heat transfer cylinder 2 is fixed to the rotating annular body 11, and a pulley 12 is formed on the peripheral surface of the rotating annular body 11, and the driving pulley 14 fixed to the rotating shaft 13 a of the motor 13 and the The pulley 12 is connected by a belt 15, and the motor 13, the driving pulley 14, the pulley 12, and the rotating annular body 11 constitute a rotation driving means 21.

  Reference numeral 16 denotes an outflow pipe as an outflow means. The outflow pipe 16 is provided in a stationary state, is in sliding contact with the central hole of the rotating annular body 11 and communicates with the heat transfer cylinder 2.

  17a, 17b are bearings, 18 is a seal, 19 is a sphere interposed between the small bottom plate 5a and the bottom plate 2a, 20 is a liquid tank in which the heat exchange device 1 is installed, The base body 3 is installed on the upper side in contact with or away from the bottom of the liquid tank 20.

  Next, the operation and effect of the heat exchange device 1 of the present embodiment will be described.

  The liquid tank 20 is filled with, for example, hot water, and the motor 13 is rotationally driven to rotate the heat transfer cylinder 2 via the drive pulley 14, the belt 15, the pulley 12, and the rotating annular body 11, and the inflow pipe 5. For example, cold water flows in and flows out into the heat transfer cylinder 2 through the through hole 6 at the lower end.

  Then, the cold water in the heat transfer cylinder 2 and the hot water outside the heat transfer cylinder 2 are heat-exchanged via the heat transfer cylinder 2, and the cold water flows out from the outflow pipe 16 as hot water.

  Here, the outer edge of the inner fixed blade 7 is close to or slidably contacted with the inner surface of the heat transfer cylinder 2, and the inner edge of the outer fixed blade 9 is close to or slidably contacted with the outer surface of the heat transfer cylinder 2. The liquid film is peeled off on the inner surface and the outer surface of the film to improve the efficiency of heat exchange.

  The rotating annular body 11 that fixes the upper end of the heat transfer cylinder 2 is positioned above the liquid surface in the liquid tank 20, and the lower end of the heat transfer cylinder 2 is fixed in a sealed state by the bottom plate 2a. Since the inflow of the liquid, that is, cold water into the pipe 5 and the outflow of the liquid, that is, hot water, from the outflow pipe 16 are performed above the liquid level, the water in the liquid tank is mixed with the inflowing water that has become cold water or hot water. There is no rotation, and the rotation support part of the rotation annular body 11 and the heat-transfer cylinder 2 decreases, and rotation becomes easy.

  The heat exchanging device of the present invention is used for heat recovery from waste water from chemical factories, machinery factories, etc., heating hot water with hot spring water, cooling and heating hot water, and the like.

DESCRIPTION OF SYMBOLS 1 Heat exchange apparatus 2 Heat transfer cylinder 2a Bottom plate 5 Inflow means 6 Through-hole 7 Internal fixed blade 9 External fixed blade 11 Rotating annular body 16 Outflow means 21 Rotation drive means

Claims (2)

A rotatable heat transfer cylinder formed of a material with good thermal conductivity , which is closed by a bottom plate and supported in the vertical direction ;
A rotating annular body fixed to the upper end of the heat transfer cylinder and provided above the liquid level of the liquid outside the heat transfer cylinder;
Rotation driving means for rotating the rotating annular body;
An inflow pipe that is supported in a stationary state at the center of the heat transfer cylinder, closes the lower end portion with a small bottom plate, and has a through hole formed in the lower portion of the peripheral wall to allow liquid to flow in from above. ,
An outflow pipe that slidably contacts the central hole of the rotating annular body and that communicates with the heat transfer cylinder, and that flows the liquid upward;
An internal fixed blade fixed to the outer peripheral surface of the inflow pipe, and peeling off the boundary film in proximity to or in sliding contact with the inner peripheral surface of the heat transfer cylinder;
A heat exchanging apparatus comprising an external fixed blade that peels off the boundary film in proximity to or in sliding contact with the outer peripheral surface of the heat transfer cylinder. In the central hole, a support annular body that rotatably supports the rotating annular body is provided above the liquid surface, and the external fixed blade is fixed to a support column having an upper end fixed to the supporting annular body . The heat exchange device according to claim 1.

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