JP3159566U - Indirect vaporization cooling system - Google Patents

Abstract

The present invention provides an indirect vaporization type cooling device that improves cooling efficiency, is small, and is compact as a whole. SOLUTION: A wet channel 4 for causing a vaporization phenomenon and a dry channel 2 through which air to be cooled are passed, and the wet channel 4 and the dry channel 2 are laminated so as to be alternately arranged. In an indirect evaporative cooling device that cools the flow path base 1 by the vaporization phenomenon in the wet channel 4, the flow of air passing through the wet channel 4 and the dry channel 2 is parallel flow In addition, the indirect evaporative cooling device is configured by reusing indoor air as the air supplied into the wet channel 4. [Selection] Figure 1

Description

  In the present invention, a humidified cooling zone (wet channel) and a cooled air zone (dry channel) formed by stacking substrates at predetermined intervals are alternately arranged adjacent to each other, and air flowing into the cooled air zone is The present invention relates to an indirect vaporization type cooling device for cooling. In particular, it is related with the structure of the cooling part of an indirect vaporization type cooling device.

  The method of cooling air using the heat of vaporization of water has been used for a long time. However, the efficiency of heat exchange between the substrate disposed in the passage for vaporizing water and the fluid fed into the passage adjacent to the substrate is poor and not practical. Japanese Patent Application Laid-Open No. 2004-5133, October 21, 2009 and several other patents have been invented and put into practical use as improved heat exchange efficiency. For example, it is known from JP2009-150632A. When air is humidified, a vaporization phenomenon occurs and latent heat is taken away, whereby the temperature of the air is cooled to the wet bulb temperature of the air. However, at the same time, the air to be cooled is humidified. This principle is widely known as humidification cooling from the following patent documents and the like, and evaporative coolers using the same are widely made and sold. When humidification of the released air is not desired, the humidified cooling zone (wet channel) and the zone through which the air to be cooled (dry channel) is separated, and the temperature cooled in the humidified cooling zone is heat exchanged In this way, only the sensible heat of the air in the zone to be cooled is cooled. A so-called indirect vaporizer cooler has already been manufactured and sold.

  JP-T-2004-513320   JP 2007-147117 A   JP 2009-150632 A

The invention of Patent Document 1 passes a gas flow that passes through a wet side that vaporizes water sucked up by a capillary phenomenon from a water tank disposed in the lower part and a dry side that adjoins the wet side (which allows a fluid to be cooled to pass). The fluid to be cooled is cooled by heat exchange, and a large number of holes are made in the substrate arranged between the two, and water flows into this to increase the cooling efficiency. The gas passing through the wet side and the dry side The fluid flow was orthogonal and the heat exchange rate was not favorable.
The cooling device according to the invention described in Patent Document 2 is configured such that the flow of stacked air to be cooled and the flow of air flowing into the wet zone are orthogonal to each other, and a plurality of holes are provided in the substrate, or the shape of the substrate Is a ninety-nine fold. With such a structure, the heat exchange efficiency is poor, and the apparatus is practically bulky, and it is expensive to install in a store such as a convenience store. Therefore, it could not be made as small as installing in a general household.

  Furthermore, although the flow path base of Patent Document 3 is formed of synthetic resin, the flow of the air to be cooled and the flow of the fluid that causes the vaporization phenomenon are made to be a shunt type.

The indirect evaporative cooling device of the present invention improves the cooling efficiency of the conventional indirect evaporative cooling device, and provides a cooling device that can be installed in a general home that is compact and entirely compact.
For this purpose, an indirect vaporization system that reduces the generation of turbulence in the air to be cooled that passes through the dry channel of the cooling section, increases the heat exchange rate, and transmits the generated cooling heat with the maximum heat exchange efficiency. It is to provide a cooling device.

The above-mentioned problem is solved by reusing the air to be cooled in the cooling section used in the indirect vaporization cooling device of the present invention and the air flow passing through the wet channel in parallel flow, and reusing the humidified air discharged from the wet channel. The problem is to devise improvements to improve the points.
Another object of the present invention is to provide an indirect evaporative cooling device that simplifies the manufacture of the apparatus by making the air flow parallel in the dry channel and the wet channel, and can be manufactured in a compact manner. is there.

The subject of this invention can be achieved by the following structures.
Laminate a flow path base between the wet channel for causing vaporization and the dry channel through which the air to be cooled passes, and laminate the wet channel and the dry channel alternately. In the indirect vaporization cooling device, wherein the flow channel base is cooled by a vaporization phenomenon in the wet channel and the air flowing into the dry channel is cooled by heat exchange, the wet channel and the dry channel This is a configuration of an indirect evaporative cooling device in which the flow of air passing through the channel is made into a parallel flow and the indoor air is reused as the air supplied into the wet channel.

  The object of the present invention can be achieved by the configuration of an indirect vaporization type cooling device that is one selected from polyester, polypropylene, and aluminum as a material for a channel base that forms the wet channel.

  The subject of the present invention is that the flow path base forming the wet channel and the dry channel is formed of porous plastic, and a streamlined spacer is provided on one side of the flow path base along the air flow direction. This can be achieved by a configuration of an indirect vaporization cooling device in which a plurality of protrusions are arranged at predetermined intervals and arranged, and a plurality of convex portions are formed in an embossed pattern on the flow path base surface, and depressions are arranged on the back surface.

The problem of the present invention is that the hydrophilic membrane layer formed on the surface of the flow path base on the wet channel side of the flow path base,
・ Surface fibers electrostatically flocked to the entire surface of the channel base,
-The fiber is a hydrophilic fiber,
-Use a channel substrate having a water retention layer consisting of one selected from silica gel, zeolite, sponge-like titanium oxide or a mixture deposited and applied as an adsorbent on the surface of the channel substrate. This can be achieved by the configuration of the indirect vaporization cooling device.
The problem of the present invention is that the flow path substrate has a hollow body with a square shape or a corrugation shape, and a plastic structure with improved gas flow is used as a core body, and a hydrophilic film layer is formed on the surface. This can be achieved by the configuration of the indirect evaporative cooling device having the cooling section.

The indirect evaporative cooling device of the present invention is a system that performs heat exchange between air and air. As this method, a parallel flow method is adopted in which the air flow in the air zone to be cooled (dry channel) and the air flow in the humidification cooling zone (wet channel) face each other.
This parallel flow method is recognized to have better heat exchange efficiency than the orthogonal type.

  As the flow path base of the indirect vaporization type cooling device of the present invention, it is preferable that it is easy to process and lightweight. For example, those made of porous plastics such as polyethylene and polypropylene are easy to mass-produce and inexpensive. In addition, a hollow body having a square shape or a corrugation shape and formed by a plastic structure or the like having improved gas flow can efficiently exchange heat by circulating air in the hollow of the core body. it can. Furthermore, a lightweight thin aluminum plate can also be used.

  As a hydrophilic membrane layer formed on one side of the porous plastic as the flow path base, that is, on the surface of the wet channel side, a paper or sheet such as a woven fabric or a non-woven fabric is preferably attached. A short fiber film layer may be provided by electrostatic flocking. When an adsorbent such as titanium oxide or silica gel is applied to the surface of the hydrophilic film layer, the water retention capacity increases. Therefore, the vaporization efficiency is good.

  As the flow path base of the indirect vaporization cooling device of the present invention, there should be no moisture / moisture transfer between the wet channel and the dry channel, so the partition wall of both channels is polypropylene that does not transmit water. It is preferable to use a plastic such as The plastic partition preferably has a thickness of about 0.3 mm in order to maximize the heat exchange efficiency.

  In order to form a wet channel and a dry channel, it is possible to integrally mold with porous plastic in order to create a space of 1 to 5 mm, and the surface of this porous plastic is approximately rhombus 5 mm wide and 3 mm high. If the streamlined spacer 2 is formed in a projecting manner, air turbulence can be prevented.

  Since the porous plastic substrate has a smooth surface, a membrane layer for wetting water is provided on the surface of the porous plastic plate. The material for the film layer is suitably paper such as cellulose or polypropylene. The thickness of this film layer is suitably about 0.1 mm to 0.5 mm.

  In order to maximize the vaporization phenomenon in the wet channel of the indirect vaporization cooling device of the present invention, it is appropriate that the amount of water introduced into the wet channel is moderately moist and the water flows. On the other hand, the vaporization phenomenon is reduced. For this purpose, the membrane layer is impregnated with an adsorbent and water is retained in the wet membrane. For example, an adsorbent such as silica gel or sponge-like titanium oxide is coated.

  As a method of supplying water to the cooling unit in which the flow path bases of the indirect vaporization cooling device of the present invention are stacked and arranged, the exhaust port of the flow channel base of the wet channel is positioned on the upper side, the stacks are vertically stacked, The laminated channel base is immersed in a water tank and water is supplied to the channel base by capillary action. In this water absorption force, water may not reach the upper end of the flow path base. On the other hand, water is supplied into the wet channel from above.

  Regarding the method of flowing air to the wet channel and the dry channel of the cooling part of the indirect vaporization cooling device of the present invention, air is always flowed in one direction in each channel by independent blowers.

  The amount of air introduced into the wet channel side is 100%. The air passing through the dry channel can also be supplied into the room using 100%. The air flowing into the wet channel is exhausted from the exhaust port of the wet channel to the outside after the vaporization phenomenon occurs in the wet channel. In this case, the cooling efficiency can be improved by reusing indoor air and supplying it into the wet channel. It can be used as a humidifier by supplying humidified air exhausted from the wet channel into the room.

  The indirect evaporative cooling device of the present invention uses return air from a room with good temperature and humidity conditions, in addition to the case of using only outside air. In this case, there is a method in which the temperature of the air passing through the dry channel is further lowered by allowing only the return air having a good condition to flow into the wet channel, instead of using the return air mixed with the outside air. Also, indoor return air can be introduced as air flowing into the wet channel, and after passing through the wet channel to cause a vaporization phenomenon, the air can be exhausted from the exhaust outlet of the wet channel.

  In order to generate the maximum vaporization phenomenon in the wet channel in the indirect vaporization type cooling device of the present invention, it is necessary to appropriately select the flow rate and the diversion rate of the water supply. As a result of the test analysis based on the experimental values, these elements are appropriate values having a flow path height of 1 to 5 mm and a flow rate of 1 to 5 m / sec.

  The flow path base used in the indirect vaporization type cooling device of the present invention has a large number of streamlined spacers protruding and arranged on the surface of the flow path base, and a large number of embossed protrusions on the surface of the flow path base. What has a part (recessed timple on the back surface) can be used. Furthermore, since the surface area of the flow path base is enlarged by the convex portion, not only is the heat exchange efficiency excellent, but the entire device can be made light by weight reduction with a porous synthetic resin (plastic).

  Further, since the air flow in the wet channel and the dry channel is parallel, cooling air can be generated efficiently, and 100% of the air fed into the dry channel and the wet channel is used. Can be efficient.

Further, the air passing through the wet channel can exhaust 100% of the air flowing from the supply port through the exhaust port, and the humidified air is efficiently exhausted, so that the cooling efficiency is good. Since 100% is exhausted compared with the shunt type that reuses exhaust from the conventional dry channel, efficiency is improved.
In particular, since the laminated channel bases are arranged vertically and each channel is formed vertically, the bottom of the arranged channel bases is immersed in a water tank, so that the water is removed from the base by a capillary phenomenon. Can suck up on. Water can be supplied to the channel base by natural rise of water.

  A large number of tips, streamlined spacers, and peripheral shielding walls can be easily manufactured by molding a porous plastic plate material as the channel base, and the indirect vaporization cooling device can be miniaturized, enabling mass production. It becomes easy and can be produced at low cost. In addition, the surface retention of other plastic plates can be applied to increase water retention. For example, water retention can be enhanced by spraying and adhering fine particles of hydrophilic plastic.

It is a schematic explanatory drawing of the cooling part of the indirect type vaporization cooling device of this invention. 1 is a schematic view of an embodiment of a base surface in a wet channel used in the indirect vaporization type cooling device of the present invention. 1 is a schematic view of an embodiment of a base surface in a dry channel used in the indirect vaporization type cooling device of the present invention. It is a perspective view which shows the other Example of the board | substrate which uses the indirect vaporization type cooling device of this invention. It is the schematic of this invention indirect type vaporization cooling device.

The indirect vaporization type cooling device of the present invention will be described based on the embodiments shown in the drawings.
In the schematic view of the cooling section of the indirect vaporization cooling device shown in FIG. 1, a dry channel 2 formed by a flow path base 1 and a hydrophilic water retention film 3 is formed on the outer surface of the flow path base 1 to form the water retention Outside air is introduced into the wet channel 4 surrounded by the membranes 3 and 3 to exhaust the humid air from the exhaust port 5. The water retaining film 3 is supplied with water from a water tank 7 provided in the cooling section. If necessary, water may be sprayed from the top.

2, 3 and 4 show an embodiment of the channel base disposed in the cooling part of the indirect vaporization type cooling device of the present invention.
FIG. 2 is an explanatory view of the flow path base 1 arranged on the side of the dewet channel 2. In the surface of the porous plastic sheet, approximately rhombus streamline spacers 6 are formed by embossing, and between the arranged spacers 6. A large number of dimples are formed by embossing. Guide walls 8 and 8 (to prevent air flow to the side) are provided on the upper and lower edges of the flow path base 1, and the inlet 9 and the exhaust are provided at both end edges of the upper guide wall 8 of the flow path base 1. The mouth 5 is bored. The flow of air in the channel is regulated by the guide walls 8 and 8 and the rectifying plate 11, and the humidified air is exhausted from the exhaust port 5 while vaporizing the water in the water retaining film 3. When a water absorbing agent such as sponge titanium oxide or silica gel is applied to the water retaining film 3, the water adsorbability is improved.

  FIG. 3 is an explanatory view of the flow path substrate 1 arranged on the wet channel 4 side. The configuration in which the porous plastic sheet is provided with rhombus streamline spacers 6 and depressions and the guide walls 8 and 8 are provided on the top and bottom of the dry channel. It is the same as the channel base 1. A shielding wall 10 protrudes from the edge of the dry channel 2 on the air flow inlet side.

  The flow path base 1 shown in FIG. 4 has a hollow body with a square shape or a corrugation shape, a plastic structure 12 having improved gas flowability as a core body, and a water retention film 3 attached to both surfaces thereof. is there. Spacers 13 are arranged on the surface of the water retaining film 3 and alternately stacked to constitute a cooling unit.

Description of the operation of the indirect vaporization cooling device of the present invention.
As shown in FIG. 5, the cooling unit in which the channel bases 1 are stacked is arranged in the water tank 7 in the vertical direction, and the lower side is immersed in the water tank 7. On the other hand, a watering member is disposed on the upper side, and water is appropriately supplied to the wet channel 4. Cooling water is retained in the wet channel.
Outside air is introduced into the wet channel 4 from the inlet 9 by using a blower (not shown), and a vaporized phenomenon is caused in the wet channel 4 to exhaust the humid air from the exhaust port 10. On the other hand, air to be cooled is inserted into the dry channel 2 from the inlet side using a blower (not shown). The dry channel 2 is cooled by heat exchange with the channel base 1 cooled and is supplied to the room at an appropriate temperature.

  Such a parallel flow direct cooling unit is easy to manufacture, and the structure of the inlet and exhaust ports of the channel base can be easily manufactured.

The indirect evaporative cooling device of the present invention cools air using only the vaporization phenomenon of water, and does not use any refrigerant gas. The use of refrigerant gas is considered to be a cause of global warming and has a great effect on CO2 reduction. Further, since no compressor such as a heat pump is used, energy such as electricity and gas is not used at all, so that the utility value is very wide.

DESCRIPTION OF SYMBOLS 1 Channel base 2 Dry channel 3 Water retention film 4 Wet channel 5 Exhaust port 6 Spacer 7 Water tank 8 Guide wall 9 Inlet port 10 Shielding wall 11 Current plate 12 Plastic structure 13 Spacer

Claims (7)

  Laminate a flow path base between the wet channel for causing vaporization and the dry channel through which the air to be cooled passes, and laminate the wet channel and the dry channel alternately. In the indirect vaporization cooling device, wherein the flow channel base is cooled by a vaporization phenomenon in the wet channel and the air flowing into the dry channel is cooled by heat exchange, the wet channel and the dry channel An indirect evaporative cooling device characterized in that a blower for supplying air to the dry channel and the wet channel, respectively, is provided in parallel with the flow of air passing through the channel.   The indirect evaporative cooling device according to claim 1, wherein air introduced into the wet channel is room temperature air in a room, and all of the air is discharged from an exhaust port.   3. The indirect vaporization cooling device according to claim 1, wherein the flow channel base material forming the wet channel is one selected from polyester, polypropylene, and aluminum. 4.   The flow path base forming the wet channel and the dry channel is made of porous plastic, and a plurality of streamline-shaped spacers are provided on one side of the flow path base at predetermined intervals along the air flow direction. 2. The indirect vaporization according to claim 1, wherein the channel base is formed by arranging a plurality of protrusions in an embossed pattern on the surface of the flow path base and arranging recesses on the back surface. Cooling device. As a water retention layer formed on the wet channel side surface of the flow path base,
・ Surface fibers electrostatically flocked to the entire surface of the channel base,
-The fiber is a hydrophilic fiber,
・ Uses a channel substrate having a water retention layer consisting of one selected from silica gel, zeolite, sponge-like titanium oxide or a mixture deposited and applied as an adsorbent on the surface of the channel substrate The indirect evaporative cooling device according to any one of claims 1 to 3, wherein the indirect vaporization cooling device is provided.   The flow path base has a hollow body with a square or corrugated shape, a plastic structure with improved gas flowability as a core, and a cooling section formed with a hydrophilic film layer on the surface. The indirect evaporative cooling device according to any one of claims 1 to 4, wherein the indirect evaporative cooling device is characterized.   6. The indirect evaporative cooling device according to claim 1, wherein exhaust gas from the wet channel is used as humidified air.

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