JPH074685A - Apparatus for humidifying and cooling air - Google Patents

Abstract

PURPOSE:To solve the problem of drain disposal by making water pass along the inner wall of a duct before mist-form water in air grows to large waterdrops when humidified air containing the mist-form water flows through the duct. CONSTITUTION:Humidified air flows through an inclined duct 36. Part of water contained in this air is caught and gathered in grooves 50 formed in the upper wall of the inner wall of the inclined duct 36, by a capillary phenomenon, and flows through recessed guide passages formed by these grooves 50. This water drops down under the gravity while it passes along the lower surface of the inner wall from the end parts 50a and 50b of the inclined duct 36 via the lateral surface of the inner wall. According to this constitution, waterdrops formed on the upper wall (ceiling part) of the inner wall of the inclined duct are prevented from mixing in a stream of cooled air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a humidifier-equipped cool air blower, and more particularly to an air cooler for cooling air by utilizing heat of vaporization of water.

[0002]

2. Description of the Related Art Conventionally, a combination of a cooling device with a humidifier is disclosed in, for example, Japanese Patent Application Laid-Open No. 47-44748, and a device utilizing the humidification cooling effect of ultrasonic humidification is disclosed in Japanese Patent Application Laid-Open No. 62-29843. It has been known. In the device disclosed in Japanese Patent Laid-Open No. 47-44848, water adhering to the outer peripheral portion of the evaporator is sprayed near the discharge holes of the air duct, and the air is cooled by the latent heat of vaporization during water spraying.

Japanese Patent Application Laid-Open No. 62-29843 discloses a device in which mist-like water from a humidifier is mixed with the air sucked from a blower unit to diffuse and evaporate, and the heat of vaporization at that time causes the air temperature to rise. It is to lower.

[0004]

In general, such humidified air containing mist-like water tends to form water droplets on the inner wall of the duct during its flow. This water drop
It is easy to cause "water splash". That is, when the water droplets dripping from the inner wall of the duct ride on the cold air flowing at high speed in the duct, the water droplets fly out of the duct together with the cold air, which causes a problem in wastewater treatment.

The present invention has been made to solve such a problem, and provides a humidifying cooler for solving the problem of waste water treatment by transmitting the water droplets to the inner wall of the duct before the water droplets grow large. The purpose is to

[0006]

Means for Solving the Problems A humidifying cooler according to the present invention for solving the above problems is a humidifying cooler in which humidified cool air is circulated in a duct. Providing water collection means to collect,
It is characterized in that the water collected by the water collecting means is discharged from the side of the inner wall of the duct through the lower part by utilizing gravity.

[0007]

Function The humidified air flows through the duct. A part of the water contained in the air is collected by the water collecting means provided on the upper wall of the duct inner wall, and the water collected by the water collecting means flows from the side surface of the duct inner wall to the lower surface. Since the water drops flow down to the lower part while being transmitted, water droplets that have agglomerated on the upper wall (ceiling part) of the inner wall of the duct will not be mixed in the cold air flow.

[0008]

Embodiments of the present invention will be described with reference to the drawings.
1st Example of the humidification cool air blower of this invention is shown in FIGS.
In FIG. 1, a humidifying cool air blower 1 includes an evaporator 3, a compressor 5,
A refrigeration cycle device including a condenser 7 and the like is provided. A fan 12 is provided inside the evaporator 3 in the cooler case 10, and a drive shaft 14 of the fan 12 is connected to a motor 16. A fan 18 is provided inside the condenser 7 of the case 10, and a drive shaft 20 of the fan 18 is connected to the motor 16.

The humidifying device 22 is a device for spraying water into the air blown by the fan 12 after passing through the evaporator 3. The humidifier 22 is composed of, for example, an ultrasonic humidifier, and supplies the water pumped from the water tank 24 by the water pump 26 into the humidifier 28. At the bottom of the container 30 of the humidifier 28, an ultrasonic transducer 32 that promotes atomization from the liquid surface of water is provided.
Is attached.

The air sent through the evaporator 3 and the fan 12 is supplied to the outside in the direction of arrow A shown in FIG. 1 via the vertical duct 34 and the inclined duct 36 connected to the vertical duct 34. It The inlet duct 40 of the humidifier 28 is
One end opens into the vertical duct 34, and the other end opens into the upper portion of the container 30. Further, the outlet duct 44 has one end opening to the air downstream side of the inlet duct 40 in the vertical duct 34,
The air outlet 44a at the other end communicates with the upper portion of the container 30.

The lower end 34a of the vertical duct 34 is
An inclined duct 46 opens at the upper part of the water tank 24 so that the water accumulated on the bottom surface falls into the water tank 24 by gravity. As shown in FIG. 2, a large number of fine parallel grooves 5 are formed on the inner wall of the inclined duct 36 in a partial arc in the circumferential direction.
0 is formed. As shown in FIG. 4 (A), the inclined duct 36 is inclined at an inclination angle θ with respect to the horizontal direction, and as shown in FIG. 4 (B), the groove 50 is formed in the inclined duct 3
It is formed in the upper part of the inner wall of 6 within the range of the arc angle of the angle α. The groove width of the groove 50 is, for example, about 1 mm, and the pitch thereof is about twice the groove width. The groove depth is approximately 1/2 of this groove width.

As an embodiment of the present invention, the relationship between the duct inclination angle θ and the groove forming angle α is set to the correlation shown in FIG. This is because the angle range of the groove forming angle α of the groove 50 needs to be increased as the inclination angle θ of the inclined duct 36 increases in order to prevent water droplets from falling. Next, the drainage mechanism will be described based on FIGS. 3 (A) and 3 (B).

The cold air and mist of the air flowing through the duct 36 flow in the direction of the arrow as shown in FIG. 3 (A). Then, the water droplets attached to the inner wall of the upper portion of the duct 36 are collected in the groove 50 by the capillary phenomenon and are transmitted in the direction of the arrow 101 along the concave guide path formed by the groove 50.
3 from the end portions 50a and 50b of the inner wall of the duct 36 by gravity to both side surfaces or the lower surface of the inner wall of the duct 36, and further descends in the direction of the arrow 103 in which the duct 36 extends.
It drops into the vertical duct 34 in the direction of arrow 104 shown in FIG. The water droplets that have dropped in the vertical duct 34 fall into the water tank 24 via the inclined duct 46 shown in FIG.

During operation of the refrigeration cycle apparatus, the refrigerant is circulated in the pipe constituted by the condenser 7, the evaporator 3 and the compressor 5 by driving the compressor 5. When the motors 16 are driven to rotate the fans 18 and 12, the evaporator 3 is rotated.
The cooling air cooled by
And the inclined duct 36 flows in the direction of the arrow. At this time, when the humidifier 22 is driven, the water pumped from the water tank 24 by the water pump 26 is supplied into the container 30 of the humidifier 28, and the vibration of the ultrasonic transducer 32 causes the water on the liquid surface. Mist-like water is dispersed in the container. Entrance duct 4
The air sucked into the container 30 from 0 is supplied to the vertical duct 34 from the outlet duct 44 in a state of containing the mist-like water, and the humidified air is supplied to the outside from the inclined duct 36.

Since the mist-like water evaporates in the cold air in the vertical duct 34 and the inclined duct 36 after exiting the outlet duct 44, the temperature of the cold air further drops due to the humidification cooling effect. The experimental result of this humidification cooling effect is shown in FIG. As shown in FIG. 6, when the air flow rate is constant at 450 m ³ / h, it is understood that the higher the humidification amount G, the lower the reached temperature in any range of the distance L from the air outlet 44a. The ambient air was conditioned at 30 ° C-50% humidity.

Next, the effect of "water splashing" will be compared between the comparative example having no groove on the inner wall of the inclined duct 36 and the present embodiment having the groove 50. As shown in FIGS. 9 (A) and 9 (B), in the case of the comparative example having the inclined duct 56 having no groove, a part of the mist generated from the humidifier adheres to the upper portion of the inner wall of the inclined duct 56, It grows into water drops. 20 drops of water that have grown
0 falls downward due to gravity, and the range in which the water droplets 201 that are about to fall is likely to occur in the range of the upper angle α ₀ as shown in FIG. 9B. Remaining angle β
_In the range of _0, the water droplets generated on the inner wall flow down from the side surface of the inner wall along the lower surface along the inner wall of the duct as shown by the arrow 202, and do not reach the water splash. The water droplets 201 falling from the inner wall of the duct in the range of the angle α ₀ become cold air, mist, and water droplets due to the airflow flowing in the duct, which causes the flow of arrows 203 in the duct and water splashes.

On the other hand, as shown in FIGS. 3 (A) and 3 (B), in this embodiment of the present invention, the water droplets adhering to the upper portion of the inner wall of the duct 36 are accumulated in the groove 50 by the capillary phenomenon by the groove 50. It will spread along and some of the spread water drops will leave the range of angle α and be carried to the range of angle β.
The water droplets carried to the range of the angle β are duct 3 due to gravity.
It flows down the inner wall of 6. That is, the groove 50
Due to the formation of water, all the water droplets attached to the inner wall of the duct 36 flow downward along the inner wall surface of the duct 36. As a result, so-called “water splash” in which water splashes outside the duct together with the airflow in the duct 36 is eliminated.

The range in which the water droplets that cause water splash adhere depends on the upward angle (inclination angle θ) of the duct 36, as shown in FIG. When the duct 36 is oriented in the horizontal direction, the range of the groove forming angle α is about 90 °.
The groove forming angle α expands to a wider range as the angle increases. In general, since the humidifier 22 is used in various situations, it is considered that a larger range of water splash prevention treatment is preferable.

Next, a second embodiment of the present invention is shown in FIG.
It shows in (B). The second embodiment is an example in which, instead of the groove 50 in the first embodiment, a fiber 60 having a mesh shape or a random shape is attached to the upper portion of the inner wall of the duct 36. The material, shape, and the like of the fiber 60 may be any as long as it produces a capillary phenomenon, and may be an organic fiber or an inorganic fiber.
The range of attachment of the fibers 60 is preferably the same as the range of the groove forming angle α of the groove 50 of the first embodiment.

According to the second embodiment, when the water droplets contained in the air flowing in the duct 36 try to adhere to the upper portion of the inner wall of the duct, the water on the upper portion is collected by the fiber 60 and is collected. The water droplets travel along the inner wall side surface at the angle β of the inner wall, fall to the bottom, and flow downward. Therefore, the duct 3
Since water droplets are prevented from being carried along with the cool air in 6, the so-called water splash is prevented.

Next, a third embodiment of the present invention is shown in FIG.
It shows in (B). In the third embodiment, instead of the groove 50 of the first embodiment, a hydrophilic substance 70 is applied or attached to the upper part of the inner wall of the duct 36. The hydrophilic substance 70 is, for example, polyacrylamide or the like. In the third embodiment, the water droplets attached to the inner wall of the duct 36 form a thin water film having a shape like a thin extension due to the characteristic that the contact angle of the hydrophilic substance 70 is small, and coalesce with other water droplets to form a larger water droplet. It becomes a film, spreads to the range of the angle β, and flows down along the lower surface from the side surface of the inner wall of the duct 36.

In the present embodiment, the formation range of the hydrophilic substance 70 is the same as that in the first embodiment, but in the present invention, it is the first area.
It is not limited to the range of the embodiment.

[0023]

As described above, according to the humidifying cool air blower of the present invention, a part of the water droplets in the humidified cold air is collected by the water collecting means above the inner wall of the duct, and the collected water is collected. The water drops are prevented from being carried to the outside along with the cold air because they flow down the wall and flow down, and the problem of so-called “water splash” is solved. Therefore, there is an effect that the wastewater treatment property is significantly improved.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a humidifying cool air fan according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a II portion shown in FIG.

FIG. 3A is a vertical sectional view of an inclined duct according to the first embodiment of the present invention. (B) is a B direction arrow view of (A).

FIG. 4A is a diagram showing an inclination angle θ of the inclined duct according to the first embodiment of the present invention. (B) is a diagram for explaining the groove forming angle α of the inclined duct.

FIG. 5 is a characteristic diagram showing a relationship between a duct inclination angle θ and a groove formation angle α according to the present invention.

FIG. 6 is a distance L from the air outlet according to the first embodiment of the present invention.
It is an experimental data figure which shows the relationship between and the ultimate temperature.

FIG. 7A is a vertical sectional view of an inclined duct according to a second embodiment of the present invention. (B) is a view in the direction of arrow B of (A).

FIG. 8A is a vertical sectional view of an inclined duct according to a third embodiment of the present invention. (B) is a view in the direction of arrow B of (A).

FIG. 9A is a cross-sectional view showing the flow direction of water droplets in the inclined duct of the comparative example. (B) is a view in the direction of arrow B of (A).

[Explanation of symbols]

 1 Humidifier Chiller 22 Humidifier 28 Humidifier 34 Vertical duct 36 Inclined duct 50 Groove (water collecting means) 60 Fiber (water collecting means) 70 Hydrophilic substance (water collecting means)

Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location F24F 6/00 331 9140-3L 6/12 101 Z 9140-3L

Claims (1)

[Claims] 1. A humidifying cooler for circulating humidified cool air in a duct, wherein water collecting means for collecting water carried with the cool air is provided on an upper part of an inner wall of the duct, and the water collecting means collects the collected water. A humidifying cool air blower, characterized in that water is discharged from a side portion of the inner wall of the duct through a lower portion by utilizing gravity.