JP6153157B2 - Cooling device filler and cooling device - Google Patents

Description

  The present invention relates to a cooling device filler functioning as a heat exchanger for performing heat exchange between a heat medium and air in a cooling device, and a cooling device including the cooling device filler.

  A heat medium such as cooling water is used for equipment such as an air conditioner and a refrigerator provided in the building. Since the heat medium used in these facilities rises in temperature, it needs to be cooled in order to be reused. For such cooling of the heat medium, a cooling device provided with a filler is generally used. In the cooling device, first, a heat medium to be cooled is dropped from the upper part of the filler that is installed vertically and is transmitted to the surface of the filler. The heat medium flowing along the surface of the filler material is deprived of heat of vaporization by coming into contact with air, and a part thereof is evaporated and cooled. That is, the filler functions as a heat exchanger. The cooling performance of the heat medium in such a cooling device varies greatly depending on the form of the filler.

  As a technique related to the cooling device provided with the above-described filler, for example, Patent Document 1 discloses that each of the filler units in the main body of the cross-flow type heat exchange tower is filled facing the outside air inlet of the heat exchange tower. On the entire front and back surfaces of the packing plate (filler), soot extending from the outside air inlet side to the exhaust port side extends in the air flow direction, and is formed so as to protrude substantially in parallel in the upper and lower stages. A cross-flow type heat exchange tower (cooling device) is disclosed in which the elevation angle with respect to the air flow is smaller at the portion near the outside air intake and larger at the portion near the exhaust port.

Japanese Utility Model Publication No. 3-104683

According to the technique disclosed in Patent Document 1, the surface area of the filler is increased by providing the ridges on the filler (filling plate). Therefore, the area where the heat medium and air are in contact with each other on the surface of the filler is increased, and heat exchange between the heat medium and air is facilitated. Therefore, according to the technique disclosed in Patent Document 1, it is considered that the cooling efficiency of the cooling device can be improved.
However, the filler has room for further improvement.

  Then, this invention makes it a subject to provide the cooling device provided with the filler for cooling devices which can improve the cooling efficiency of a cooling device, and this filler for cooling devices.

  The present invention will be described below.

  A first aspect of the present invention is a cooling device filler that is installed in a cooling device and allows heat exchange between the heat medium and the air that travels on the surface, and the heat medium flows through the heat medium. A heat exchange part, and the surface of the heat exchange part has a shape obtained by synthesizing a plurality of corrugated surfaces, and a plurality of corrugated surfaces are combined with a large corrugated surface and the corrugated surface. And a pitch of the large wave surface is larger than that of the small wave surface, and the amplitude of the large wave surface is larger than the amplitude of the small wave surface.

  In the first aspect of the present invention, it is preferable that at least a part of the ridgeline and valley line of the large wave-like surface is inclined with respect to the vertical direction when viewed from the front when installed in the cooling device. .

  A plurality of fillers are stacked and used. In this specification, the “front view” of the filler means viewing from a direction parallel to the stacking direction. Further, in this specification, the “mountain line” means a line passing through the top of the wavy surface (the highest position of the convex portion) when the filler is placed on a horizontal plane, and the “valley line” is , Means a line passing through the bottom of the wavy surface (the lowest position of the recess) when the filler is placed on a horizontal plane.

  In the first aspect of the present invention, the corrugated surface includes the corrugated surface A and the corrugated surface B, and when viewed from the front when installed in the cooling device, It is preferable that at least a part and at least a part of the mountain line and the valley line of the small wave surface B are formed so as to be inclined in different directions with respect to the vertical direction.

  In this specification, “inclination in a different direction with respect to the vertical direction” means that when one is inclined clockwise with respect to the vertical direction at an angle of 90 degrees or less, the other is less than 90 degrees counterclockwise. It means that it is inclined at an angle of.

  In the first aspect of the present invention, in a front view when installed in the cooling device, at least a part of the mountain line and valley line of the large wave surface and at least a part of the mountain line and valley line of the small wave surface B Are inclined in the same direction with respect to the vertical direction, and at least part of the mountain line and valley line of the large wave surface, and at least part of the mountain line and valley line of the small wave surface A Are preferably formed to be inclined in different directions with respect to the vertical direction.

  In this specification, “inclination in the same direction with respect to the vertical direction” means that when one of the vertical directions is inclined at an angle of 90 degrees or less clockwise, the other is 90 degrees or less clockwise. When one is inclined counterclockwise at an angle of less than 90 degrees, it means that the other is also inclined counterclockwise at an angle of less than 90 degrees.

  In the first aspect of the present invention, the surface of the heat exchanging portion is an intersection of a mountain line of the small wave surface A and a mountain line of the small wave surface B, a mountain line of the small wave surface A and a valley of the small wave surface B. And the intersection of the valley line of the wavelet surface A and the mountain line of the wavelet surface B, and the intersection of the valley line of the wavelet surface A and the valley line of the wavelet surface B are formed as corners. It is preferable to have a portion formed by combining substantially rectangular surfaces.

  In the first aspect of the present invention, the inclination angle of the peak line and valley line of the large wave surface is 45 degrees or more clockwise or counterclockwise with respect to the vertical direction when viewed from the front when installed in the cooling device. It is preferable that the angle of inclination of the ridgeline and valley line of the small wave surface B is 45 degrees or more and 90 degrees or less clockwise or counterclockwise with respect to the vertical direction.

  In the first aspect of the present invention, when viewed from the front when installed in the cooling device, the inclination angle of the peak and valley lines of the small wave surface A is 3 degrees or more clockwise or counterclockwise with respect to the vertical direction. It is preferable that it is 30 degrees or less.

  In the first aspect of the present invention, in the front view when installed in the cooling device, the inclination angle of the peak line and valley line of the large wave surface and the small wave surface B on the outside of the cooling device from the predetermined vertical axis. The inclination angle of the mountain line and the valley line is 45 degrees or more and 90 degrees or less clockwise with respect to the vertical direction, and the inclination angle of the mountain line and the valley line of the small wave surface A is opposite to the vertical direction. 5 degrees or more and 30 degrees or less in the clockwise direction, and the inclination angle of the peak line and valley line of the large wave surface and the inclination angle of the mountain line and valley line of the small wave surface B inside the cooling device from the predetermined vertical axis. And 45 degrees or more and 90 degrees or less counterclockwise with respect to the vertical direction, and the inclination angle of the peak and valley lines of the wavelet surface A is 5 degrees or more and 30 degrees or less clockwise with respect to the vertical direction. It is preferable that

  A second aspect of the present invention is a cooling device including the cooling device filler according to the first aspect of the present invention.

  According to the present invention, the cooling efficiency of the cooling device can be improved.

1 is a cross-sectional view schematically showing a cooling device 100. FIG. It is the top view which showed the filler 22 roughly. (A) shows the large wave surface 34 formed in the heat exchange section 28 outside the cooling device 100 from the vertical axis X shown in FIG. 2 in a front view when the filler 22 is installed in the cooling device 100. It is a figure explaining. (B) shows a large wave surface 39 formed in the heat exchange section 28 inside the cooling device 100 from the vertical axis X shown in FIG. 2 in a front view when the filler 22 is installed in the cooling device 100. It is a figure explaining. (A) shows the small wave surface B42 formed in the heat exchange part 28 outside the cooling device 100 from the vertical axis X shown in FIG. 2 in a front view when the filler 22 is installed in the cooling device 100. It is a figure explaining. (B) is a small wave surface B45 formed in the heat exchanging portion 28 inside the cooling device 100 from the vertical axis X shown in FIG. 2 in a front view when the filler 22 is installed in the cooling device 100. It is a figure explaining. (A) shows a small wave surface A52 formed in the heat exchange section 28 outside the cooling device 100 from the vertical axis X shown in FIG. 2 in a front view when the filler 22 is installed in the cooling device 100. It is a figure explaining. (B) shows a small wave surface A55 formed in the heat exchange section 28 inside the cooling device 100 from the vertical axis X shown in FIG. 2 in a front view when the filler 22 is installed in the cooling device 100. It is a figure explaining. It is a figure explaining the pitch and amplitude of a large wave surface and a small wave surface. (A) is a figure explaining a part of heat exchange part 28 outside the cooling device 100 from the vertical axis X shown in FIG. 2 in the front view when the filler 22 is installed in the cooling device 100. (B) is a figure explaining a part of heat exchange part 28 inside the cooling device 100 from the vertical axis X shown in FIG. 2 in the front view when the filler 22 is installed in the cooling device 100. It is the figure which expanded a part of heat exchange part 28 shown to FIG. 7 (A).

  The above-mentioned operation and gain of the present invention will be clarified from the following embodiments for carrying out the invention. Hereinafter, the present invention will be described based on embodiments shown in the drawings. However, the present invention is not limited to these embodiments. Each drawing is simplified for convenience of illustration and easy understanding. Moreover, in each drawing, the same code | symbol is attached | subjected to the thing of the same structure, and the code | symbol which becomes repeated may be abbreviate | omitted partially.

  FIG. 1 is a cross-sectional view schematically showing the cooling device 100. The cooling device 100 includes a cooling device main body 20 and an air supply means 10. The cooling device 100 can be configured in the same manner as a known cooling device except that it includes a cooling device filler (hereinafter simply referred to as “filler”) 22 described in detail later.

  The air supply unit 10 is a unit that can supply air into the cooling device main body 20. The air supply means 10 includes, for example, a blower 11 that can discharge the air in the cooling device main body 20 by operating with a power source (not shown), and a cylindrical drum 12 that covers the blower 11. Can do. By operating the blower 11 provided in the air supply means 10, air is sucked into the cooling device main body 20 from the louver 21 formed on the side surface of the cooling device main body 20 as shown by the white arrow in FIG. 1. The air flows through the cooling device main body 20 and is discharged from the upper portion of the cooling device 100.

The cooling device main body 20 includes a housing 13, and the housing 13 includes a heat medium supply unit 14, a filler 22, and a heat medium recovery unit 15.
A louver 21 is provided on the side surface of the housing 13, and air can be taken into the cooling device main body 20 as described above.
The heat medium supply means 14 is a means that can receive a heat medium used for equipment such as an air conditioner and a refrigerator provided in a building from the outside, and drop the heat medium on the top of the filler 22. As a specific example of such a heat medium supply means 14, a watering tank having a supply part for receiving a heat medium from the outside and a hole provided in the bottom can be mentioned. According to the watering tank, the heat medium can be received from the supply unit, and the heat medium can be dropped onto the filler 22 from the hole provided in the bottom.
The heat medium recovery means 15 is a means that can recover the heat medium dropped by the heat medium supply means 14 and heat-exchanged in the filler 22 as will be described later. A specific example of such a heat medium recovery means 15 is a container having an upper part (side on which the filler 22 is provided) opened and a discharge part capable of discharging the heat medium provided on the side surface or the bottom surface. it can. The heat medium recovered by the heat medium recovery means 15 is again used for cooling facilities such as air conditioners and refrigerators provided in the building.

  As described above, the air supply means 10 forcibly causes air to flow into the cooling device main body 20 and the heat medium supply means 14 drops the heat medium onto the filler 22 to cool the heat medium. it can. More specifically, the heat medium dripped by the heat medium supply means 14 is transmitted to the surface of the filler 22 and flows down, and the air sucked in as described above crosses the surface of the filler 22. Thus, the heat medium can be brought into contact with each other, heat exchange can be performed between the air and the heat medium, and the heat medium can be cooled. Hereinafter, the filler 22 will be described in detail.

  FIG. 2 is a plan view schematically showing the filler 22. A plurality of fillers 22 are used by being laminated. FIG. 2 is a view of one filler 22 as viewed from a direction (front) parallel to the stacking direction. In FIG. 2, the left side of the drawing is the inside of the cooling device 100, the right side of the drawing is the outside of the cooling device 100, the top side is the top side, and the bottom side is the ground side. In FIG. 2, the detailed surface shape of the heat exchanging portion 28 described in detail later is omitted.

  The filler 22 is a kind of heat exchanger that is installed in the cooling device 100 and performs heat exchange between the heat medium that travels on the surface and the air. A plurality of fillers 22 are used by being laminated. An interval for passing air for heat exchange with the heat medium is provided between the stacked fillers 22. For this reason, the filler 22 is provided with a plurality of protrusions 23 for securing a space between the adjacent other fillers 22 and receiving portions 24 for receiving the protrusions 23 of the other adjacent fillers 22. The number, installation interval, and size of the protrusions 23 and the receiving portions 24 are appropriately designed so that the interval between the fillers 22 can be appropriately secured.

  The filler 22 has a water receiver 25 at the upper part, and a heat exchanging part 28 (part shown by hatching in FIG. 2) which is a part through which the heat medium flows through the lower part of the water receiver 25. doing. The heat exchange part 28 is comprised with the board | plate material. By forming the heat exchanging portion 28 with a plate material, it becomes easy to form the surface shapes described in detail later on both surfaces of the heat exchanging portion 28. The heat medium supplied into the cooling device 100 for cooling is first dropped onto the water receiver 25 and flows down along the surface of the heat exchange unit 28.

The water receiver 25 includes a first inclined portion 26 that is inclined from the back to the front as it goes from the top to the bottom, and a second inclined portion 27 that is inclined from the front to the back as it goes from the top to the bottom. ,have. The first inclined portions 26 and the second inclined portions 27 are alternately formed in the width direction of the filler 22 (the left-right direction in FIG. 2).
The heat medium dropped from the upper part of the filler 22 onto the water receiver 25 is dropped onto the first inclined part 26 or the second inclined part 27. The heat medium dropped on the first inclined portion 26 flows down the surface on the near side of the heat exchanging portion 28, and the heat medium dropped on the second inclined portion 27 moves on the surface on the back side of the heat exchanging portion 28. It flows down.

  As described above, the heat medium flowing along the surface of the heat exchanging unit 28 contacts the air crossing the heat exchanging unit 28 to exchange heat and is cooled. According to the filler 22, since the heat exchange is efficiently performed in the heat exchanging unit 28 as described below, the cooling performance of the cooling device 100 can be improved.

  The heat exchanging portion 28 has a shape in which the surface is composed of a plurality of corrugated surfaces. The plurality of corrugated surfaces constituting the surface of the heat exchanging portion 28 are combined, so that the shape of each corrugated surface cannot be clearly identified. That is, by combining a plurality of wavy surfaces, the valley lines and the mountain lines of each wavy surface cannot be seen in a straight line. Therefore, the shape in the design stage before combining about each corrugated surface which comprises the surface of the heat exchange part 28 is demonstrated, referring drawings.

  FIG. 3 to FIG. 5 are diagrams for explaining the corrugated surface constituting the surface of the heat exchanging unit 28. 3 to 5, a solid straight line indicates a mountain line, and an alternate long and short dash line indicates a valley line.

FIG. 3A shows a large heat exchange portion 28 formed outside the cooling device 100 from a predetermined vertical axis X (see FIG. 2) in a front view when the filler 22 is installed in the cooling device 100. It is a figure explaining the wavy surface.
FIG. 3B illustrates a large wave surface 39 that is formed in the heat exchanging portion 28 inside the cooling device 100 from the predetermined vertical axis X in a front view when the filler 22 is installed in the cooling device 100. It is a figure to do.
FIG. 4A illustrates the small wave surface B42 formed in the heat exchanging portion 28 outside the cooling device 100 from the predetermined vertical axis X in a front view when the filler 22 is installed in the cooling device 100. It is a figure to do.
FIG. 4B illustrates a small corrugated surface B45 formed in the heat exchanging portion 28 inside the cooling device 100 from the predetermined vertical axis X in a front view when the filler 22 is installed in the cooling device 100. It is a figure to do.
FIG. 5A illustrates a small wave surface A52 formed in the heat exchanging portion 28 outside the cooling device 100 from the predetermined vertical axis X in a front view when the filler 22 is installed in the cooling device 100. It is a figure to do.
FIG. 5B illustrates the small wave surface A55 formed in the heat exchanging portion 28 inside the cooling device 100 from the predetermined vertical axis X in a front view when the filler 22 is installed in the cooling device 100. It is a figure to do.

  The surface of the heat exchanging portion 28 has a shape obtained by combining a plurality of corrugated surfaces. The plurality of corrugated surfaces include a corrugated surface and a corrugated surface synthesized on the corrugated surface, the pitch of the corrugated surface is larger than the pitch of the corrugated surface, and the amplitude of the corrugated surface is small. Greater than the amplitude of the wavy surface. In this embodiment, the corrugated surface has a corrugated surface A and a corrugated surface B formed in different directions. More specifically, on the outer side of the cooling device 100 from the vertical axis X (see FIG. 2), the surface of the heat exchanging unit 28 is the large wave surface 34 shown in FIG. 3A and shown in FIG. 4A. The corrugated surface B42 and the corrugated surface A52 shown in FIG. 5A are combined. On the other hand, on the inner side of the cooling device 100 from the vertical axis X (see FIG. 2), the surface of the heat exchanging unit 28 is a large wave surface 39 shown in FIG. 3B and a small wave shape shown in FIG. The surface B45 and the small wave surface A55 shown in FIG. 5B have a combined shape.

  The large wave surface 34 is a wave surface having a plurality of mountain lines 30 and 32 and valley lines 31 and 33. When viewed from the front when installed in the cooling device, the mountain line 30 and the valley line 31 are substantially horizontal, and the mountain line 32 and the valley line 33 are vertical from the width direction end side (the right side in FIG. 2) of the heat exchange unit 28. It inclines so that it may become downward as it goes to the axis | shaft X. As shown in FIG. In addition, it is preferable that the portion between the mountain line 30 and the valley line 31 in the cross section perpendicular to the mountain line 30 and the valley line 31 is a substantially sine wave. A portion between the peak line 32 and the valley line 33 in the vertical cross section is preferably a substantially sine wave. The “substantially sine wave” is not limited to a strict sine wave but is a concept including a waveform having no corners (hereinafter the same).

  The large wave surface 39 is a wave surface having a plurality of mountain lines 35 and 37 and valley lines 36 and 38. When viewed from the front when installed in the cooling device, the mountain line 35 and the valley line 36 are substantially horizontal, and the mountain line 37 and the valley line 38 are vertical from the width direction end side (the left side in FIG. 2) of the heat exchange unit 28. It inclines so that it may become downward as it goes to the axis | shaft X. As shown in FIG. In addition, it is preferable that the portion between the mountain line 35 and the valley line 36 in the cross section perpendicular to the mountain line 35 and the valley line 36 is a substantially sine wave. It is preferable that a portion between the mountain line 37 and the valley line 38 in the vertical cross section is a substantially sine wave.

  The small wave surface B <b> 42 is a wave surface having a plurality of mountain lines 40 and valley lines 41. In addition, it is preferable that the small wave surface B42 is a substantially triangular wave in the cross section perpendicular | vertical to the mountain line 40 and the valley line 41. FIG. The “substantially triangular wave” is not limited to a waveform formed by connecting strict triangles, but also includes a waveform formed by connecting shapes obtained by rounding portions corresponding to the corners of a triangle (the same applies hereinafter). By making the cross-sectional shape of the small wave surface B42 substantially triangular as described above, the flow of the heat medium is easily affected. The influence of the small wave surface B42 on the flow of the heat medium will be described later.

  The small wave surface B <b> 45 is a wave surface having a plurality of mountain lines 43 and valley lines 44. In addition, it is preferable that the small wave surface B45 is a substantially triangular wave in the cross section perpendicular | vertical to the mountain line 43 and the valley line 44. FIG. By making the cross-sectional shape of the small wave surface B45 into a substantially triangular wave as described above, the flow of the heat medium is easily affected. The influence of the small wave surface B45 on the flow of the heat medium will be described later.

  The small wave surface A <b> 52 is a wave surface having a plurality of mountain lines 50 and valley lines 51. In addition, it is preferable that the small wave surface A52 is a substantially triangular wave in a cross section perpendicular | vertical to the mountain line 50 and the valley line 51. FIG. By making the cross-sectional shape of the small wave surface A52 into a substantially triangular wave as described above, the flow of the heat medium is easily affected. The influence of the small wave surface A52 on the flow of the heat medium will be described later.

  The small wave surface A 55 is a wave surface having a plurality of mountain lines 53 and valley lines 54. In addition, it is preferable that the small wave surface A55 is a substantially triangular wave in the cross section perpendicular | vertical to the mountain line 53 and the valley line 54. FIG. By making the cross-sectional shape of the small wave surface A55 into a substantially triangular wave as described above, the flow of the heat medium is easily affected. The influence of the small wave surface A55 on the flow of the heat medium will be described later.

  According to the filler 22, the surface area of the heat exchanging portion 28 can be increased by forming the surface of the heat exchanging portion 28 into a shape in which the large wave surface and the small wave surface are combined as described above. By increasing the surface area of the heat exchanging portion 28, it is possible to increase the area where the heat medium flowing through the heat exchanging portion 28 and the air come into contact with each other. Therefore, the heat medium flowing through the heat exchanging portion 28 and the air Heat exchange can be easily performed between the two, and the cooling efficiency of the heat medium in the heat exchange unit 28 can be improved.

  The pitch and amplitude of the large wave surface and the small wave surface will be described with reference to FIG. FIG. 6 is a diagram for explaining the pitch and amplitude of the large wave surface and the small wave surface, and shows a cross section in the thickness direction of the heat exchanging portion 28 orthogonal to the mountain line 30, the valley line 31, the mountain line 40, and the valley line 41. It is a figure which shows a part schematically. In FIG. 6, a broken line indicates a cross section of the large wave surface 34 when the small wave surface 42 is not synthesized. The pitch of the large wave surface means the wave pitch (p1 in FIG. 6) of the large wave surface when the small wave surface is not synthesized. The amplitude of the large wave surface means the amplitude (h1 in FIG. 6) of the wave of the large wave surface when the small wave surface is not synthesized. The pitch of the small wave surface means an interval between valley lines (p2 in FIG. 6) of the small wave surface in a front view after the small wave surface is formed on the large wave surface. The amplitude of the small wave surface is the amplitude of the small wave surface when the large wave surface is not synthesized, that is, the virtual large wave surface (broken line in FIG. 6) and the small wave surface formed on the large wave surface. It means the distance (h2 in FIG. 6) to the mountain line.

The wave pitch of the large wave surfaces 34 and 39 is preferably 30 mm or greater and 70 mm or less, more preferably 30 mm or greater and 60 mm or less, and even more preferably 30 mm or greater and 50 mm or less. By setting the wave pitch of the large wave-like surfaces 34 and 39 below the upper limit of the above range, the wave curvature of the large wave-like surfaces 34 and 39 becomes appropriate and the surface area of the heat exchange part 28 increases, so that the heat exchange part It becomes easy to raise the cooling efficiency of the heat medium in 28. On the other hand, by setting the wave pitch of the large wave surfaces 34 and 39 to be equal to or greater than the lower limit of the above range, the flow of the heat medium 28 cannot follow the curvature of the waves of the large wave surfaces 34 and 39 and thus does not get wet with the heat medium. It can suppress that a part arises in a heat exchange part. As a result, it is possible to suppress the cooling efficiency of the heat medium in the heat exchange unit 28 from being lowered. Note that the wave pitch on the large wave-like surfaces 34 and 39 may be constant or random.

  Further, the wave amplitude of the large wave surfaces 34 and 39 is preferably 5 mm or more and 30 mm or less, more preferably 5 mm or more and 20 mm or less, and further preferably 5 mm or more and 15 mm or less. By setting the amplitude of the waves of the large wavy surfaces 34 and 39 to be equal to or lower than the upper limit of the above range, it is possible to prevent the interval between the fillers from becoming too wide when a plurality of fillers are stacked, Since the filler can be installed, it becomes easy to increase the cooling efficiency of the heat medium in the cooling device. On the other hand, by setting the amplitude of the waves of the large wave surfaces 34 and 39 to be equal to or greater than the lower limit of the above range, the surface area of the heat exchanging portion 28 per one filler can be easily increased, and the heat medium is cooled in the heat exchanging portion 28. It becomes easy to raise efficiency. Note that the amplitude of the waves on the large wave surfaces 34 and 39 may be constant or random.

  The wave pitch of the small wave surfaces B42 and 45 is preferably 2 mm or more and 20 mm or less, more preferably 2 mm or more and 15 mm or less, and further preferably 2 mm or more and 10 mm or less. By setting the wave pitch of the small wave surfaces B42 and 45 below the upper limit of the above range, it becomes easy to increase the surface area of the heat exchanging portion 28 and to improve the cooling efficiency of the heat medium in the heat exchanging portion 28. On the other hand, if the wave pitch of the small corrugated surfaces B42, 45 is too small, the corrugations on the surface of the heat exchanging portion 28 are too fine, and the small corrugated surfaces B42, 45 are submerged in the flow of the heat medium. There is a possibility that the flow of the medium cannot be controlled, and the cooling efficiency of the heat medium in the heat exchanging unit 28 is lowered. By setting the wave pitch of the small wave surfaces B42 and 45 to be equal to or higher than the lower limit of the above range, it is possible to suppress the cooling efficiency of the heat medium in the heat exchanging section 28 from being lowered as described above. The wave pitch on the small wave surfaces B42 and 45 may be constant or random.

The wave amplitude of the small wave surfaces B42 and 45 is preferably 2 mm or more and 15 mm or less, more preferably 2 mm or more and 10 mm or less, and further preferably 2 mm or more and 8 mm or less. By setting the wave amplitude of the small wave surfaces B42 and 45 below the upper limit of the above range, the flow of the heat medium becomes unable to follow the curvature of the waves of the small wave surfaces B42 and 45, so that the portion not wetted by the heat medium is heated. It can suppress that it arises in the exchange part 28. FIG. As a result, it is possible to suppress the cooling efficiency of the heat medium in the heat exchange unit 28 from being lowered. On the other hand, if the amplitude of the waves on the small wave surfaces B42 and 45 is too small, the irregularities on the surface of the heat exchange section 28 are too fine, and the small wave surfaces B42 and 45 are submerged in the flow of the heat medium. The flow of the heat cannot be controlled, and the cooling efficiency of the heat medium in the heat exchanging section 28 may be lowered. By setting the amplitude of the waves of the small wave surfaces B42 and 45 to be not less than the lower limit of the above range, it is possible to suppress the cooling efficiency of the heat medium in the heat exchanging portion 28 from being lowered as described above. It should be noted that the amplitude of the wave on the small wave surfaces B42 and 45 may be constant or random.

  The wave pitch of the small wave surfaces A52 and 55 is preferably 2 mm or more and 20 mm or less, more preferably 2 mm or more and 15 mm or less, and further preferably 2 mm or more and 10 mm or less. By setting the wave pitch of the small wave surfaces A52 and 55 to be equal to or less than the upper limit of the above range, the surface area of the heat exchanging portion 28 can be easily increased, and the cooling efficiency of the heat medium in the heat exchanging portion 28 can be easily increased. On the other hand, if the wave pitch of the small corrugated surfaces A52, 55 is too small, the irregularities on the surface of the heat exchanging portion 28 are too fine, and the small corrugated surfaces A52, 55 are submerged in the flow of the heat medium. There is a possibility that the flow of the medium cannot be controlled, and the cooling efficiency of the heat medium in the heat exchanging unit 28 is lowered. By setting the wave pitch of the small wave surfaces A52 and 55 to be equal to or greater than the lower limit of the above range, it is possible to suppress the cooling efficiency of the heat medium in the heat exchange section 28 from being lowered as described above. The wave pitch on the small wave surfaces A52 and 55 may be constant or random.

The amplitude of the waves on the small wave surfaces A52 and 55 is preferably 2 mm or more and 15 mm or less, more preferably 2 mm or more and 10 mm or less, and further preferably 2 mm or more and 8 mm or less. By setting the wave amplitude of the small wave surfaces A52 and 55 below the upper limit of the above range, the flow of the heat medium becomes unable to follow the curvature of the waves of the small wave surfaces A52 and 55, and the portion that is not wetted by the heat medium is heated. It can suppress that it arises in the exchange part 28. FIG. As a result, it is possible to suppress the cooling efficiency of the heat medium in the heat exchange unit 28 from being lowered. On the other hand, if the amplitude of the waves on the small wave surfaces A52 and 55 is too small, the irregularities on the surface of the heat exchanging portion 28 are too fine and the small wave surfaces A52 and 55 are submerged in the flow of the heat medium. The flow of the heat cannot be controlled, and the cooling efficiency of the heat medium in the heat exchanging section 28 may be lowered. By setting the amplitude of the waves of the small wave surfaces A52 and 55 to be equal to or higher than the lower limit of the above range, it is possible to suppress the cooling efficiency of the heat medium in the heat exchanging portion 28 from being lowered as described above. Note that the amplitude of the wave on the small wave surfaces A52 and 55 may be constant or random.

Moreover, it is preferable that the filler 22 is formed so that at least a part of the mountain line and the valley line of the large wave surface is inclined with respect to the vertical direction when viewed from the front when installed in the cooling device 100.
Hereinafter, the inclination angle of the peak line and valley line of the large wavy surface is sometimes referred to as “inclination angle of large wave surface”, and the inclination angle of the peak line and valley line of the small wave surface A is referred to as “inclination angle of the small wave surface A”. And the inclination angle of the peak line and the valley line of the small wave surface B may be referred to as “the inclination angle of the small wave surface B”.

By forming at least the large corrugated surface with a predetermined inclination angle as described above, an appropriate resistance can be given to the flow of air across the heat exchanging portion 28, so that the air flows through the heat exchanging portion 28. Heat exchange can be easily performed between the heat medium and the air, and the cooling efficiency of the heat medium in the heat exchange unit 28 can be improved.
However, if the resistance of the air that crosses the heat exchanging section 28 is increased too much, the air flow may deteriorate and the cooling efficiency of the cooling device 100 may be reduced. In addition, if the resistance of the air crossing the heat exchanging unit 28 becomes too large, the work amount of the blower 11 may increase and the power consumption of the motor that operates the blower 11 may become too large.
Therefore, it is preferable that the inclination angle of the large wave surface is appropriately designed within the range described later according to the capacity of the blower of the cooling device and the required cooling performance.

  In the front view when installed in the cooling device 100, the inclination angle of the peak line and valley line of the large wavy surface is preferably 45 degrees or more and 90 degrees or less clockwise or counterclockwise with respect to the vertical direction, 50 degrees or more and 90 degrees or less are more preferable, and 55 degrees or more and 90 degrees or less are still more preferable.

  As described above, by forming the large wave surface with a predetermined inclination angle, it is possible to give an appropriate resistance to the air flow across the heat exchanging portion 28, so that the cooling efficiency of the cooling device 100 is improved. Can be made. However, the inclination angles of the large wave surface and the small wave surface also affect the direction in which the heat medium flowing along the surface of the heat exchange section 28 flows. If the direction in which the heat medium flows is biased, there is a risk of causing a carry-over or water splash described later.

The carry-over refers to a phenomenon in which the heat medium in the cooling device is carried by the air flow generated by the blower and is scattered outside the cooling device during operation of the blower. Originally, a part of the heat medium that should be recovered by dropping along the surface of the filler to the receiving tray at the bottom of the cooling device is separated from the filler to the inside of the cooling device. In some cases, after floating in the cooling device, the air flow is caused by the blower to be discharged out of the cooling device.
If the blower stops, carry-over will not occur, but the flow of air sucked into the cooling device will disappear, so that part of the heat medium will be released from the filler to the louver side and scattered outside the cooling device. It becomes easy. The phenomenon that the heat medium scatters from the louver in this way when the blower is stopped is called water splash.

  When the air blower of the cooling device is operated, an air flow is generated from the outside to the inside of the cooling device. At this time, the air sucked into the cooling device crosses the filler from the outside to the inside of the cooling device. Therefore, in the conventional cooling device, carry-over occurs, or the heat medium dripped from the top of the filler receives the resistance of the air crossing the filler and is pushed into the cooling device to enter the air inflow side of the filler ( There was a part (dead space) that was not wetted by the heat medium on the outside of the cooling device.

  According to the technique disclosed in Patent Document 1 described above, the surface of the filler is provided with a soot extending from the air inflow side to the air outflow side, and this soot is inclined with respect to the horizontal air flow. It is thought that water flows so as to oppose the pressure from the air inflow side to the air outflow side, the forces of both are equalized, and water flows relatively uniformly over the entire surface of the filler. Therefore, it is thought that the problem which arises when operating a fan in a cooling device can be solved.

  However, the cooling device does not always operate the blower, and the blower may be stopped depending on the degree to which the heat medium is cooled. When the blower is stopped, the heat medium dropped from the upper part of the filler flows down while being influenced by gravity and the surface shape of the filler. At this time, in the filler designed on the premise that the blower is operated as in the technique disclosed in Patent Document 1, the heat medium travels along the saddle provided on the surface of the filler when the blower is stopped. As a result, there is a problem that water drifts to the air inflow side (outside the cooling device) and water splashes.

  In the prior art, it has been difficult to achieve both suppression of carryover and suppression of water fly as described above.

  According to the filler 22, the inclination angle of the large wave surface and the small wave surface is appropriately designed according to the size of the blower and the capacity of the cooling device itself, so that the filler 22 The heat medium dripped from the upper part can be made to flow uniformly over the surface of the heat exchanging unit 28 to increase the cooling efficiency, and carryover and water splash from the cooling device can be suppressed. That is, when the air blower of the cooling device is operated, that is, the heat medium flowing along the surface of the heat exchanging portion 28 moves from the air inflow side (cooling device side surface) of the filler 22 to the air outflow side (cooling device inner surface side). Even when the air flows while receiving pressure by the flowing air, when the blower of the cooling device is stopped, that is, the heat medium that flows along the surface of the heat exchanging portion 28 is affected by gravity and the surface shape of the heat exchanging portion 28. Even if it flows down, the heat medium dripped from the upper part of the filler 22 can be made to flow uniformly on the surface of the heat exchanging unit 28, and both when the cooling device blower is operated and when it is stopped. Carryover and water flight can be suppressed.

From the viewpoint of suppressing carry-over and water splash from the cooling device while improving the cooling efficiency by uniformly flowing the heat medium dripped from the upper part of the filler 22 as described above to the surface of the heat exchanger 28. The surface includes the small wave surface A and the small wave surface B, and when viewed from the front when installed in the cooling device, at least a part of the mountain line and valley line of the small wave surface A and the mountain line of the small wave surface B It is preferable that at least a part of the valley line is inclined in a different direction.
In addition, when viewed from the front when installed in the cooling device, at least a part of the mountain line and valley line of the large wave surface and at least a part of the mountain line and valley line of the small wave surface B are perpendicular to the vertical direction. It is formed so as to incline in the same direction, and at least a part of the mountain line and valley line of the large wavy surface is different from at least a part of the mountain line and valley line of the small wave surface A with respect to the vertical direction. It is preferable to be formed so as to be inclined in the direction.

More specifically, in the front view when installed in the cooling device 100, the inclination angle of the mountain line and valley line of the large wave surface and the inclination angle of the mountain line and valley line of the small wave surface B are in the vertical direction. On the other hand, it is preferably 45 ° or more and 90 ° or less, clockwise or counterclockwise, more preferably 50 ° or more and 90 ° or less, and further preferably 55 ° or more and 90 ° or less. By setting the inclination angles of the large wave surface and the small wave surface B in the above range, it is possible to suppress the flow rate of the heat medium dropped from the upper part of the filler from being excessively increased, and to cool the heat medium in the heat exchange unit 28. It can suppress that efficiency becomes low.
In addition, the inclination angle of the peak line and the valley line of the small wave surface A is preferably 3 degrees or more and 30 degrees or less clockwise or counterclockwise with respect to the vertical direction, and is 5 degrees or more and 27 degrees or less. Is more preferable, and is more preferably 7 degrees or more and 25 degrees or less. By setting the inclination angle of the small wave surface A within the above range, it is possible to suppress the occurrence of a bias in the flow of the heat medium on the surface of the heat exchanging portion 28 and to easily improve the cooling efficiency of the heat medium in the heat exchanging portion.

In the present embodiment, in the front view when installed in the cooling device 100, the inclination angle of the peak line and valley line of the large wave surface and the mountain line and valley of the small wave surface B on the outside of the cooling device from the vertical axis X. The inclination angle of the line is formed to be 45 degrees or more and 90 degrees or less clockwise with respect to the vertical direction, and the inclination angle of the mountain line and the valley line of the small wave surface A with respect to the vertical direction. It is formed to be not less than 5 degrees and not more than 30 degrees in the counterclockwise direction. Inside the cooling device from the vertical axis X, the inclination angle of the peak line and valley line of the large wave surface and the peak line of the small wave surface B And the inclination angle of the valley line is 45 degrees or more and 90 degrees or less counterclockwise with respect to the vertical direction, and the inclination angle of the peak line and valley line of the small wave surface A is the vertical direction. It is formed to be 5 degrees or more and 30 degrees or less clockwise. . In other words, in the present embodiment, the small wave surface A is formed so as to be widened toward the end, and the large wave surface is formed so as to incline downward from the both ends in the width direction of the filler 22 toward the vertical axis X or to be horizontal. A small wave surface B was formed.
The position of the vertical axis X is preferably near the center in the width direction (left-right direction in FIG. 2) of the filler 22, and more preferably in the center in the width direction.

  By adopting a structure in which the large wave surface, the small wave surface A, and the small wave surface B are combined as in the present embodiment, the horizontal of the filler 22 that changes between when the fan 11 of the cooling device 100 is operated and when it is not operated. Regardless of the presence or absence of directional pressure (air wind pressure), the heat medium can easily flow on the surface of the heat exchanging portion 28 uniformly. At the same time, a carry-over in which the heat medium jumps from the upper part of the cooling device 100 to the outside of the cooling device 100 together with the air flow generated by the blower 11, and the heat medium passes through the louver 21 to the outside of the cooling device 100. It becomes easy to suppress water splashing out.

  In the heat exchanging portion 28 according to the present embodiment configured as described above, the valley line and mountain line of the small wave surface A intersect with the valley line and mountain line of the small wave surface B as shown in FIG. doing. FIG. 7A is a diagram for explaining a part of the heat exchanging portion 28 outside the cooling device 100 from the vertical axis X in a front view when the filler 22 is installed in the cooling device 100. FIG. 7B is a diagram for explaining a part of the heat exchanging portion 28 inside the cooling device 100 from the vertical axis X in a front view when the filler 22 is installed in the cooling device 100.

As described above, the valley line and the mountain line of the wavelet surface A intersect with the valley line and the mountain line of the wavelet surface B, so that the surface of the heat exchanging portion 28 is formed with the wave line and the wavelet of the wavelet surface A. Intersection with the mountain line of the surface B, intersection of the mountain line of the small wave surface A and the valley line of the small wave surface B, intersection of the valley line of the small wave surface A and the mountain line of the small wave surface B, and small wave It has a portion formed by combining substantially quadrangular surfaces formed with corners at the intersections of the valley line of the surface A and the valley line of the corrugated surface B.
In addition, “substantially square” refers to a plane figure surrounded by four straight lines, but includes distortion after molding the heat exchange part and deformation caused by good or bad molding accuracy. The mold used for forming the replacement part may be a substantially square shape, and is not limited to the product shape after molding. The “substantially quadrilateral” is not limited to a strict quadrilateral, and is a concept that includes a shape in which portions corresponding to the corners of the quadrilateral are rounded.
For example, as shown in FIG. 7A, the surface of the heat exchanging section 28 has an intersection 60 between the mountain line of the small wave surface A and the mountain line of the small wave surface B, and the small line and the small line of the small wave surface A. Intersection 61 with valley line of wavy surface B, intersection 62 with valley line of small wave surface A and mountain line of small wave surface B, and intersection of valley line of small wave surface A and valley line of small wave surface B 63, and a portion formed by combining substantially square surfaces formed with corners. The substantially square surface will be described in more detail with reference to FIG. FIG. 8 is an enlarged view of a part of the heat exchanging section 28 shown in FIG.

  Of the sides constituting the quadrangle shown in FIG. 8, the sides indicated by thick lines are in positions protruding from the opposing sides (positions that are higher when the valley lines and mountain lines of each wavy surface are made horizontal). It is an edge. Accordingly, the quadrangle S1 is inclined so as to protrude from the lower left corner toward the upper right corner, the quadrangle S2 is inclined so as to protrude from the upper right corner toward the lower left corner, and the quadrangle S3 is upper left. The quadrangle S4 is inclined so as to protrude from the lower right corner toward the upper left corner.

  When the surface of the heat exchanging portion 28 is configured by combining the substantially square surfaces as described above, when the heat medium dropped from the upper portion of the filler 22 flows along the surface of the heat exchanging portion 28, a large wave shape is formed. Surface, small wave surface B and small wave surface A can be easily influenced by the inclination angle, and even when the cooling device blower is operated or stopped, a stable heat medium It becomes easier to keep the flow, and the heat medium can flow more uniformly on the surface of the heat exchanging portion 28.

  The substantially square surface may be further provided with a wavy surface or unevenness having a smaller pitch and amplitude than the small wave surface, and these may be used as a resistance to the flow of the heat medium.

  The manufacturing method of the filler 22 demonstrated so far is not specifically limited. For example, it can be molded using a mold corresponding to the shape of the filler 22. Moreover, the material which comprises the filler 22 can use the same thing as the conventional filler. As a material constituting the filler 22, for example, polyvinyl chloride or the like can be used.

  In addition, when a plurality of fillers are stacked and installed in the cooling device, two or more kinds of fillers in which positions where the large wave surface and the small wave surface are formed are prepared, and adjacent fillers have the same shape. It is preferable not to become. By setting it as this form, it becomes easy to form the space | interval which air passes between adjacent fillers.

  The specification of the filler is as follows, and this filler is installed in an existing cooling device (Mitsubishi Plastics Co., Ltd., Ri series model 200ME), and cooling conforms to the cooling standards stipulated by the Japan Cooling Tower Industry Association. Driving was carried out. In addition, the operation and stop of the blower of the cooling device were repeated, and the occurrence of water splash and carryover was confirmed. As a result, it was possible to sufficiently cool under any conditions, and it was possible to confirm the suppression of water splash and carryover.

(Filler specification)
(1) Angle of wave Inclination angle of large wave surface: When viewed from the front when installed in the cooling device, the outside of the cooling device is perpendicular to the vertical axis passing through the center in the horizontal direction (width direction) of the heat exchange section. On the other hand, it was 60 degrees and 90 degrees clockwise, and the inside of the cooling device was 60 degrees and 90 degrees counterclockwise with respect to the vertical direction from the vertical axis passing through the center in the horizontal direction of the heat exchange section.
Angle of inclination of small wave surface A: When viewed from the front when installed in the cooling device, the outside of the cooling device is 10 degrees counterclockwise with respect to the vertical direction from the vertical axis passing through the center in the horizontal direction of the heat exchange unit. Yes, the inside of the cooling device was 20 degrees clockwise with respect to the vertical direction from the vertical axis passing through the horizontal center of the heat exchange section.
Angle of inclination of the small wave surface B: When viewed from the front when installed in the cooling device, the outside of the cooling device is 90 degrees clockwise from the vertical axis passing through the horizontal center of the heat exchanging unit. The inner side of the cooling device was 60 degrees counterclockwise with respect to the vertical direction from the vertical axis passing through the horizontal center of the heat exchanger.
(2) Wave amplitude Large wave surface amplitude: 10mm
Amplitude of wavelet surface A and wavelet surface B: 5 mm
(3) Wave pitch Large wave surface pitch: 45mm
Wave pitch of small wave surface A and small wave surface B: 7 mm

DESCRIPTION OF SYMBOLS 10 Air supply means 11 Blower 12 Drum 13 Case 14 Heat medium supply means 15 Heat medium collection | recovery means 20 Cooling tower main body 21 Louver 22 Filler 23 Protrusion 24 Receiving part 25 Water receiving 26 First inclined part 27 2nd inclined part 28 Heat Exchange section 30, 32, 35, 37 Mountain line 31, 33, 36, 38 Valley line 34, 39 Large wave surface 40, 43 Mountain line 41, 44 Valley line 42, 45 Small wave surface B
50, 53 Mountain line 51, 54 Valley line 52, 55 Small wave surface A
100 Cooling device X Vertical axis

Claims (8)

A cooling device filler that is installed in the cooling device and allows heat exchange between the air and the heat transfer medium that travels on the surface,
A heat exchange part that is a part through which the heat medium flows,
The surface of the heat exchange part has a shape obtained by synthesizing a plurality of wavy surfaces,
The plurality of corrugated surfaces include a corrugated surface and a corrugated surface synthesized on the corrugated surface;
The corrugated surface includes a corrugated surface A and a corrugated surface B;
The large pitch of the corrugated surface is greater than the pitch of the small corrugated surface, and the amplitude of the large corrugated surface is rather greater than the amplitude of the small corrugated surface,
In front view when installed in the cooling device,
At least a part of the mountain line and valley line of the small wave surface A and at least a part of the mountain line and valley line of the small wave surface B are formed so as to be inclined in different directions with respect to the vertical direction. Yes ,
Filler for cooling device. In front view when installed in the cooling device,
The filler for a cooling device according to claim 1, wherein at least a part of a mountain line and a valley line of the large wavy surface is inclined with respect to a vertical direction. In front view when installed in the cooling device,
At least a part of the mountain line and the valley line of the large wavy surface and at least a part of the mountain line and the valley line of the small wave surface B are inclined in the same direction with respect to the vertical direction. Formed,
At least a part of the mountain line and the valley line of the large wavy surface and at least a part of the mountain line and the valley line of the small wave surface A are inclined in different directions with respect to the vertical direction. Formed,
The filler for a cooling device according to claim 1 or 2 . The surface of the heat exchange part is
The intersection of the mountain line of the wavelet surface A and the mountain line of the wavelet surface B, the intersection of the mountain line of the wavelet surface A and the valley line of the wavelet surface B, the wavelet surface The intersection formed between the valley line of A and the peak line of the corrugated surface B and the intersection of the valley line of the corrugated surface A and the valley line of the corrugated surface B are formed as corners. It has a part formed by combining rectangular faces,
The filler for a cooling device according to any one of claims 1 to 3 . In front view when installed in the cooling device,
The angle of inclination of the mountain line and the valley line of the large wavy surface is 45 degrees or more and 90 degrees or less clockwise or counterclockwise with respect to the vertical direction,
The angle of inclination of the mountain line and the valley line of the small wave surface B is 45 degrees or more and 90 degrees or less clockwise or counterclockwise with respect to the vertical direction.
The cooling material filler according to any one of claims 1 to 4 . In front view when installed in the cooling device,
The angle of inclination of the mountain line and the valley line of the small wave surface A is 3 degrees or more and 30 degrees or less clockwise or counterclockwise with respect to the vertical direction.
The filler for a cooling device according to any one of claims 1 to 5 . In front view when installed in the cooling device,
Outside the cooling device from a predetermined vertical axis, the inclination angle of the mountain line and the valley line of the large wave surface and the inclination angle of the mountain line and the valley line of the small wave surface B in the vertical direction. On the other hand, the angle is 45 degrees or more and 90 degrees or less clockwise, and the inclination angle of the peak line and the valley line of the small wave surface A is 5 degrees or more and 30 degrees or less counterclockwise with respect to the vertical direction,
Inside the cooling device from the predetermined vertical axis, the inclination angle of the mountain line and the valley line of the large wave surface and the inclination angle of the mountain line and the valley line of the small wave surface B are in the vertical direction. And 45 degrees or more and 90 degrees or less counterclockwise, and the inclination angle of the peak line and the valley line of the small wave surface A is 5 degrees or more and 30 degrees or less clockwise with respect to the vertical direction. ,
The filler for a cooling device according to any one of claims 1 to 6 . The cooling device provided with the filler for cooling devices in any one of Claims 1 thru | or 7 .