JP3171462U - Water supply mechanism of indirect vaporization cooling system - Google Patents

Abstract

Provided is a water supply mechanism for an indirect vaporization cooling device that can supply a predetermined amount of water while controlling water evenly in each wet channel from above and has a simple structure. A water supply unit for supplying water into a wet channel is provided on a cooling unit formed by arranging a plurality of bases in a vertical position at predetermined intervals to form a dry channel and a wet channel. This is a water supply mechanism of an indirect vaporization type cooling device in which a plurality of water spray pipes 3 having a large number of water spray holes are arranged in the water supply section 5 and a water supply pipe 6 is connected to the water spray pipe 3. [Selection] Figure 4

Description

  The present invention relates to an indirect vaporization type cooling device for supplying water to a humidification cooling zone of a cooling section in which a humidification cooling zone (wet channel) and a cooled air zone (dry channel) are disposed adjacent to each other with a base interposed therebetween. It relates to the water supply mechanism.

  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. 2004-340551 and several other patents have been invented and put into practical use for improving the heat exchange efficiency. 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 2004-340551 A   JP 2007-147117 A   Utility Model Registration No. 3157602 FIG. 1

  The invention of Patent Document 1 discloses a gas flow that passes through a wet side that vaporizes water sucked into a base from a water tank disposed in a lower portion, and a dry side that is adjacent to the wet side (which allows a fluid to be cooled to pass). The fluid that passes through is cooled by heat exchange, and the water supplied to the wet side is a method of supplying water to the humidification cooling zone from above the base group arranged vertically or horizontally. In this case, water could not be evenly supplied to the entire surface of the arranged bases, the amount of water supplied to the bases was not appropriate, and the heat exchange rate was not good. Further, the cooling device of the invention described in Patent Document 2 injects water from an injection port provided in a water supply pipe disposed above as a supply water supply mechanism, but is uniform to each wet channel of the base. Since water could not be supplied, the heat efficiency was poor. As described in Patent Documents 1 and 2, as a method of supplying water into a wet channel formed by arranging bases at predetermined intervals, water is sprayed from above, and the base is attached to a water tank in which water is stored. There is a method of standing upright and sucking up by the capillary action of the base, but none of them could supply water uniformly into each wet channel, so the heat exchange rate was not stable.

The water supply apparatus according to the invention described in Patent Document 2 drops water from above the arranged bases. In such a structure, the heat exchange efficiency is poor, the apparatus is practically bulky, and the whole becomes large and expensive to install in a store such as a convenience store. Therefore, it cannot be formed in a small size as installed in a general household.
In addition, the utility model registration No. 3157602 of Patent Document 3 can uniformly supply water between the bases, but the structure is complicated and it cannot be manufactured at low cost.

  In the conventional indirect vaporization cooling system, the amount of water varies for each wet channel, which is the humidification cooling zone of each base placed in the cooling section, in the method of sucking up from the water tank, and sufficient water is supplied to the upper side of the base. I couldn't. Therefore, although a method of supplying water from above the base has been performed, it has been impossible to uniformly supply water into the wet channel by controlling a predetermined amount of water uniformly. The inventor of the present invention provides a water supply mechanism for an indirect vaporization cooling device that can supply a predetermined amount of water while controlling the water evenly in each wet channel from above and has a simple structure. To do.

The water supply mechanism of the indirect vaporization type cooling device according to the present invention is an object to be improved to improve the above problems.
The present invention is to improve the cooling efficiency of the conventional indirect vaporization type cooling device and provide a compact device. In particular, a simple water supply mechanism for supplying water into the wet channel is proposed. Provide a water supply mechanism that minimizes the amount of water required to cause vaporization. In particular, tap water can be used.
An object of the present invention is to provide a water supply mechanism capable of supplying water more effectively by supplying water from above into the wet channels of the arranged bases.
The object of the present invention is to provide a water supply mechanism for an indirect vaporization type cooling apparatus that is simple and compact in structure, has a good cooling efficiency, and is inexpensive with a unit system.

The indirect evaporative cooling device of the present invention improves the cooling efficiency of the conventional indirect evaporative cooling device, and provides an indirect evaporative cooling device that can be installed in a general home that is small and compact.
Since the indirect vaporization type cooling device of the present invention is a device mainly composed of air, it is intended to provide a manufacturing method suitable for mass production at a low cost by minimizing the pressure loss of the device when considering commercial use.

  The base used for the indirect vaporization type cooling device of the present invention is devised to improve the above problems.

The subject of this invention can be achieved by the following structures.
The substrate is placed between the wet channel for generating vaporization and the dry channel through which the air to be cooled passes, and the wet channel and the dry channel are alternately stacked and arranged. In the indirect vaporization type cooling device that cools the substrate due to the vaporization phenomenon in the wet channel and cools the air flowing into the dry channel by heat exchange, a large number of the substrates are arranged at predetermined intervals while standing vertically A water supply section for supplying water into the wet channel is installed on the cooling section formed by forming the dry channel and the wet channel, and a plurality of water spray pipes having a large number of water spray holes are arranged in the water supply section. This is a configuration of a water supply mechanism of an indirect vaporization type cooling apparatus in which a water supply pipe is connected to the water spray pipe.

  The object of the present invention can be achieved by a water supply mechanism in which the water spray pipe is made of a porous material and the water inside seeps out to the surface, and a plurality of such water spray pipes are placed on the cooling unit. .

  The object of the present invention is to dispose a base made of porous plastic between a wet channel for causing a vaporization phenomenon and a dry channel through which air to be cooled passes, and the wet channel and the dry channel Is an indirect vaporization type cooling device that cools the substrate by vaporization phenomenon in the wet channel, cools the air flowing into the dry channel by heat exchange, The space between the bases is regulated, a number of embossed protrusions are formed on the base surfaces, and indentations are formed on the back surface, fibers are implanted on the sides of the wet channels of the bases, and air in the wet channels is formed. The air flow in the dry channel and the air flow in the dry channel are countercurrent, and the air that has passed through the wet channel is exhausted from the exhaust port provided in the base. The air to be cooled that has passed through the dry channel is supplied into the room, and water pipes having a large number of water spray holes that allow the supplied water to bleed out are placed on a plurality of water supply sections on the base, and the wet channel This can be achieved by a water supply mechanism of an indirect vaporization cooling device that causes water to flow down in the flow path.

  The water supply mechanism of the indirect evaporative cooling device of the present invention is the supply of water from above to the cooling section in which a plurality of bases made of porous plastic are arranged vertically to form a dry channel and a wet channel. Can be done uniformly to the base of each porous plastic by the watering pipe. Since the watering pipes having a large number of watering holes that can bleed out the supplied water are placed on the water supply units on the plurality of bases, uniform water can be supplied to the cooling unit.

In addition, the water supply mechanism of the indirect vaporization cooling device of the present invention can also stack units by stacking a plurality of units in which a water supply unit and a cooling unit are integrated vertically in a stacking arrangement or horizontally. . A plurality of water pipes connected to water pipes connected to a water pipe or the like are placed in the water supply section of each unit, and the water pipes have a large number of water holes that allow the supplied water to spill out.
Excess water in the dry channel of the cooling section is collected in the bottom water storage section and discharged through the drain. Therefore, by adjusting the number of units, various sizes of indirect vaporization type cooling devices can be installed.

  A water retention layer is formed by planting fibers on the inner surface of the wet channel of the base of the indirect vaporization cooling device of the present invention. This fiber hair can be easily planted on the base surface by electrostatic flocking. It is preferable to apply an adsorbent, silica gel, ceramic, sponge titanium oxide, or the like that reliably retains water for a long time on the surface of the fiber bristles. Sponge titanium oxide is particularly preferable.

The water supply mechanism of the indirect evaporative cooling device according to the present invention has a horticultural sprinkler pipe arranged above the wet channel of the base group arranged vertically, in the water supply section, so that it oozes from the surface of the sprinkler pipe. An appropriate amount of water can be supplied into the wet channel without excessive water spurting out.
The water supply mechanism of the present invention can perform water supply according to the environment by using a watering pipe having a large number of water seepage holes, and temperature control can be ensured.

Since the water supply part of the water supply mechanism of the present invention has a simple structure, it can be formed integrally with the cooling part in which the bases are arranged to form a unit. Therefore, it is possible to provide a compact and efficient indirect evaporative cooling device by stacking the small units of the water supply unit and cooling unit on a shelf board etc. and arranging about 4 units horizontally, so it can be installed in an individual residence. Can be manufactured and assembled in various sizes.
For example, as shown in FIG. 6, the indirect vaporization type cooling device can be manufactured by delivering the unit to the space of the shelf board.

  In addition, the indirect vaporization cooling device of the present invention flows into this dry channel in a box of a cooling section in which porous plastic bases are arranged at predetermined intervals and a plurality of wet channels and dry channels are formed. As a result, a part of the air discharged from the cooled air (air supply part) flows back into the wet channel, and the air flow is counterflowed by causing a vaporization phenomenon in the wet channel to exhaust. Therefore, not only can the cooling air be generated efficiently, but also a part of the exhaust from the dry channel can be returned and sent into the wet channel to be used as a humidifier.

In the wet channel of the indirect vaporization cooling device of the present invention, fiber yarns are implanted on the surface of the porous plastic substrate, so that the moisture retention is excellent and the efficiency due to the vaporization phenomenon is good.
The watering pipe of the present invention is a lightweight and high-strength porous plastic mainly composed of polyvinyl chloride used for horticulture and having a porosity of 40% or more and an open cell ratio of 50% or more. Can be used. Also, porous ceramics and the like can be smoothly oozed out of water.

FIG. 1 is a schematic perspective view of one embodiment of a water supply mechanism of an indirect vaporization type cooling device according to the present invention. Drawing 2 is a perspective view (a) and a sectional view (b) showing an example of a watering pipe arranged in a water supply part of a water supply mechanism of the present invention. FIG. 3 is a perspective view showing an embodiment of a watering pipe disposed in the water supply unit of the present invention. FIG. 4 is a schematic view of an indirect evaporative cooling device provided with a water supply mechanism of the present invention. FIG. 5 is a perspective view of a unit employed in the indirect vaporization cooling device of the present invention. FIG. 6 is a schematic view of an indirect vaporization cooling device showing a shelf structure in which the units of FIG. 5 are arranged.

The indirect vaporization type cooling device of the present invention is a system for exchanging heat between air and air. As this system, it is roughly classified as an air zone to be cooled (dry channel) as described in Patent Document 1 or the like. A cross-flow method in which the flow of air and the air flow in the humidification cooling zone (wet channel) are orthogonal to each other, a parallel flow method in which the air flow of both channels inserts air into each channel from the same direction, and a wet flow A counter-current system is known in which air flow is opposed between the channel and the dry channel.
It is recognized that the heat exchange efficiency is better when the air flow is orthogonal, when the air flow is parallel and countercurrent.

  As the base used for the indirect vaporization type cooling device of the present invention, there should be no movement of humidity and moisture between the wet channel (WET) and the dry channel (DRY). A plastic structure is used in which the gas flow is improved by using a synthetic resin or the like that does not transmit water and has a good flow of air to be cooled. The plastic partition wall is preferably about 0.2 mm thick in order to maximize the heat exchange efficiency. The spacer of the wet channel adjacent to the surface of the base can be formed by cutting out and molding a plastic structure having good gas flowability like the base.

The wet channel and the dry channel are alternately formed by forming water retaining layers for wetting water on both sides of the base used in the indirect vaporization type cooling device of the present invention. As the water retention layer, fiber paper such as woven fabric and nonwoven fabric, or a sheet such as polypropylene is suitable. The thickness of the water retaining layer is suitably about 0.05 mm to 0.5 mm. Commercially available Oikos sheet (Nisshinbo Co., Ltd. trade name) can be used.
In forming the water retaining layer, hydrophilic plastic fine particles may be welded to the surface of the base plastic structure or the surface may be finely textured.

  In order to maximize the vaporization phenomenon in the wet channel where the spacer of the indirect vaporization cooling device of the present invention is arranged, it is appropriate that the amount of water introduced into the wet channel is moderately wet. On the other hand, the vaporization phenomenon will decrease in the state where the current flows. For this purpose, the membrane layer of short fibers 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 flowing air into the wet channel and the base (dry channel) of the indirect vaporization type cooling device of the present invention, a method of flowing in from a certain direction is preferable. Various methods can be considered as a method of flowing a part of the air passing through the dry channel into the wet channel, but in the present invention, on the air outlet side (air supply to the room) of the dry channel, Just applying static pressure outside the machine, some air flows into the open wet channel (split type).

  The amount of air introduced into the wet channel formed as described above is suitably 30 to 50% of the amount of air passing through the inside of the base. By changing the external static pressure on the outlet side of the base, a part of the air coming out of the dry channel flows into the wet channel. In this case, according to experimental values, when a static pressure of about 90 to 100 Pascal is applied as the external static pressure, about 30% of the air flows into the wet channel. The air flowing into the wet channel is exhausted to the outside from the exhaust port of the notch provided on the upper side of the board after the vaporization phenomenon occurs.

  In order to produce the maximum vaporization phenomenon in the spacer (wet channel) in the indirect vaporization type cooling device of the present invention, it is necessary to appropriately select the flow rate of water and the flow rate. 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.

When the indirect vaporization type cooling device of the present invention was compared with a conventional orthogonal indirect vaporization type cooler, the following data was obtained.
(B) The cooling effect has been increased by about 30%.
(B) The in-machine pressure loss was about 1/3.

A water supply mechanism of an indirect vaporization cooling device of the present invention will be described based on an embodiment shown in the drawings.
The water supply mechanism of the indirect vaporization type cooling device according to the present invention comprises a plastic base 1 forming a wet channel and a dry channel arranged at a predetermined interval to constitute a cooling unit 2, and the outside of the base 1. It has a water retaining layer with excellent water moisture retention on both sides. The water retention layer is formed of a hydrophilic sheet formed of fibers such as woven fabric and nonwoven fabric. Further, a water retaining film layer may be formed in which a hydrophilic film is formed by spraying or adhering fine particles of a water adsorbent such as titanium oxide or silicon oxide.

  These bases 1 are stacked at a predetermined interval and stacked and fixed by a round bar or the like to form a cooling unit 2. The lower end (bottom) of the cooling unit 2 is provided with a water tank for storing excess water, and the lower end of the base 1 is immersed therein. A water supply part 5 is formed by arranging watering pipes 3 having a large number of watering holes 4 on the cooling part 2. The watering pipe 3 uses a gardening watering hose (irrigation hose) formed of synthetic resin or the like. For example, a vinyl chloride resin foamed tube can be used. Moreover, what was manufactured with the porous ceramic etc. may be used. The water spray pipe 3 is connected to a water supply pipe 6 connected to a water pipe or the like, and the water supply pipe 6 is provided with a pressure reducing valve, a flow meter and the like.

The water spray pipe 3 of the present invention is made of a porous plastic having a large number of water spray holes 4 as shown in FIG. 2, and is preferably such that water passing through the inside is oozed out. For example, a gardening watering hose is preferable. The shape is circular, and water is uniformly supplied to the cooling unit 2.
As an embodiment of the water supply mechanism of the present invention, as shown in FIG. 3, water is supplied from a water supply pipe 6 in which one end of two sprinkling pipes 3 is connected, and is arranged in the water supply part 6 placed on the cooling part 2. It is.
The indirect vaporization type cooling device of the present invention comprises a unit in which a cooling unit 2 and a water supply unit 5 are combined as shown in FIG.

Description of the operation of the indirect vaporization cooling device of the present invention.
On the other hand, a water supply section 5 in which a plurality of sprinkling pipes 3 are arranged is arranged on the upper side, and water is supplied into the wet channel of the base 1. Air to be cooled is inserted into the dry channel (DRY) from the base side of the plastic structure having a gas flowability arranged vertically. The air that has passed through the hollow of the base 1 is cooled by heat exchange of the base 1 and is discharged from the air inlet side to the room and supplied to the room. A static pressure of 90 to 100 Pascals is applied in the vicinity of the outlet, and a part of the discharged air is blown into the wet channel, and this air cools the base 1 by the vaporization phenomenon of the moisture adsorbed on the base 1. To do. The moisture-containing air is exhausted from the exhaust port. In this way, the air in the dry channel is cooled by heat exchange.

  In the indirect vaporization cooling device of the present invention, the counterflow direction of the air to be cooled in the cooling section and the air flow in the wet channel (WET) can be made “parallel”. An “orthogonal” type is also possible.

  The indirect vaporization type cooling device of the present invention can be arranged in a plurality of units including the cooling unit 2 and the water supply unit 5 and can be installed according to the installed capacity. For example, as shown in FIG. 6, it is possible to have a configuration in which five rows are stacked and three rows are arranged. In addition, it is an indirect vaporization type cooling system that can be arranged in 8 stages and up to 4 stages.

(B) This machine 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, no energy such as electricity and gas is used, the utility value is very wide.
(B) In addition to the usage method of directly treating the outside air, there is a method of using the air dehumidified by the desiccant air conditioner by introducing it into this indirect vaporizer cooler. The cooling performance of this indirect vaporizer is that the lower the dew point temperature of the inlet air, the more the vaporization phenomenon occurs, so the outlet temperature decreases, and a desiccant air conditioner is used to lower the dew point of the inlet air. The system that lowers the temperature with this indirect evaporative cooler without humidifying the air whose dew point has been lowered by the desiccant air conditioner is extremely useful as an external conditioner.

DESCRIPTION OF SYMBOLS 1 Base 2 Cooling part 3 Sprinkling pipe 4 Sprinkling hole 5 Water supply part 6 Water supply pipe

Claims (3)

The substrate is placed between the wet channel for generating vaporization and the dry channel through which the air to be cooled passes, and the wet channel and the dry channel are alternately stacked and arranged. In the indirect vaporization type cooling device that cools the base by the vaporization phenomenon in the wet channel and cools the air flowing into the dry channel by heat exchange,
A water supply unit for supplying water into the wet channel is installed on the cooling unit formed by arranging a large number of bases vertically at predetermined intervals and forming a dry channel and a wet channel. A water supply mechanism for an indirect vaporization cooling device, wherein a plurality of water spray pipes having a large number of water spray holes are arranged and a water supply pipe is connected to the water spray pipe.   The water supply mechanism of the indirect vaporization cooling device according to claim 1, wherein the water spray pipe is formed of porous plastic. In the water supply mechanism of the water supply unit,
A water spray pipe for supplying water into a wet channel on a cooling part formed by arranging a plurality of porous plastic substrates vertically at predetermined intervals to form a dry channel and a wet channel is a plastic material or metal. The indirect vaporization type cooling device according to claim 1, wherein the indirect vaporization type cooling device is a water supply mechanism that is formed of a material and is placed on a cooling unit.

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