JPH0632922U - Cold fan - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce the size of the cold air fan and to facilitate the manufacture of the carburetor for the cold air fan to reduce costs. A water tank 5 for storing water and a fan 6 for taking in air from the outside and blowing the taken-in air to the outside are provided in a main body case 4, and a plurality of plates 21 formed of a porous member are provided in the main body. The lower ends of the plates 21 were housed in the case 4 and immersed in the water in the water tank 5 to form air passages 23 through which air flows.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cold air fan that cools air taken in from the outside by utilizing the heat of vaporization of water and sends it as cold air to the outside.

[0002]

[Prior art]

 As a cold air fan utilizing the heat of vaporization of water, there is one filed by the present applicant as Japanese Patent Application No. 4-51554, and this cold air fan is shown in FIG. 4 as a prior art of the cold air fan according to the present invention. Explain. First, a main body case 4 in which a lower case 1 and an upper case 2 are connected by screws 3 is provided. Inside the main body case 4, a water tank 5 that stores water and air from the outside are taken in. A fan 6 that blows the taken-in air to the outside is provided. An intake port 7 for taking in air from the outside when the fan 6 is driven is formed on the back surface side of the main body case 4, and an air filter 8 is attached to the front surface side of the main body case 4. A blowout port 9 through which air is blown to the outside is formed in this, and a duct 10 which is expandable and contractible is connected to this blowout port 9.

Further, in the upper case 2, a water injection port 11 for injecting water into the water tank 5, and a water injection pipe 13 connecting the water injection port 11 and a water injection pipe 12 extending from the water tank 5. A grip 14 is formed to hold the cold air fan when carrying it. An electric motor (not shown) for driving the fan 6 and a battery 15 as a power source for the electric motor are housed in the main body case 4, and a power switch 16 for switching the electric motor on / off is provided above. It is attached to the outer circumference of the case 2.

Next, in the water tank 5, there is installed a water absorbent mounting table 17 formed of a water absorbent member, and the upper end surface of the water absorbent mounting table 17 is slightly below the upper edge of the water tank 5. Is set to be Then, a vaporizer 18 made of ceramics, which is a porous member, is placed on the water absorbent mounting table 17, and the vaporizer 18 has a large number of through holes 19 through which the air taken in by the drive of the fan 6 flows. Are formed.

In such a structure, when water is injected into the water tank 5, the water is absorbed in the water absorbent mounting table 17 and sucked up from the water absorbent mounting table 17 into the carburetor 18 by a capillary phenomenon. As a result, the inner peripheral surface of the circulation hole 19 becomes wet with this water. Then, the air taken in from the outside by the drive of the fan 6 flows through the inside of the circulation hole 19 to promote the evaporation of the water that has wetted the inner peripheral surface of the circulation hole 19 and, along with this evaporation, remove the air from the air. The heat of vaporization is taken away, and the air that has been deprived of the heat of vaporization and cooled becomes cold air and blows out from the duct 10.

[0006]

[Problems to be solved by the device]

 In the carburetor 18 used in the cold air fan described above, the surface area (vaporization area) on which the air hits to evaporate water can be increased even if the outer dimensions are reduced, and therefore, the downsizing of the cold air fan can be achieved. Can be planned. However, since the vaporizer 18 is integrally molded using ceramics, it is difficult to manufacture and the cost is high.

[0007]

[Means for Solving the Problems]

 According to the first aspect of the present invention, a water tank for storing water and a fan for taking in air from the outside and blowing the taken-in air to the outside are provided in the main body case, and a plurality of plates formed by a porous member are provided. The plates were housed in the main body case and the lower ends of these plates were dipped in the water in the water tank to form air flow paths between the plates.

A second aspect of the invention is the device of the first aspect, wherein a plurality of holes are formed in the plate.

[0009]

According to the first aspect of the invention, when each plate is housed in the main body case and its lower end is immersed in the water in the water tank, the water is sucked up into the plate by the capillary phenomenon, and the plates are The surface of becomes wet. Then, when the air taken in from the outside flows in the air flow path formed between the plates, it evaporates the water that wets the surface of the plate, and at the same time, the heat of vaporization from the air flowing in the air flow path. The air that is deprived and deprived of the heat of vaporization is cooled and blows out to the outside.

According to the second aspect of the present invention, by forming the holes in the plate, the vaporization area is increased and the air flowing in the air flow channel is disturbed, so that evaporation of water is promoted.

[0011]

【Example】

 An embodiment of the invention described in claim 1 will be described with reference to FIGS. 1 and 2. The same parts as those described in FIG. 4 are designated by the same reference numerals, and the description thereof will be omitted (the same applies hereinafter). A carburetor 20 is housed in the main body case 4, and the carburetor 20 is mounted on a water absorbing mount 17 installed in the water tank 5.

Here, the carburetor 20 is formed by a plurality of plates 21 made of ceramics, which is a porous member, and a holding frame 22 made of plastics for holding the plates 21 in parallel with each other. An air flow path 23 is formed between the plates 21 and through which air taken in from the outside by driving the fan 6 flows. The lower end of the plate 21 is immersed in the water in the water tank 5.

In such a configuration, the water in the water tank 5 is absorbed by the water absorbent mounting table 17 and is sucked up into the plate 21 by the capillary phenomenon from the water absorbent mounting table 17 to wet the surface of the plate 21. It becomes a state. Then, the air taken in from the outside by the drive of the fan 6 flows through the air flow path 23 to evaporate the water that wets the surface of the plate 21. With this evaporation, the heat of vaporization is taken from the air. Be done. Then, the air cooled by removing the heat of vaporization becomes cold air and blows out from the duct 10 to the outside.

Here, the plate 21 forming the vaporizer 20 has a simple shape and is easy to manufacture. Moreover, since about 40 plates 21 are used for one cold air fan, it is possible to significantly reduce the cost by mass production.

Regarding the downsizing and cooling capacity of the cold air fan, it is possible to secure a sufficient vaporization area without increasing the outer diameter dimension of the plate 21, and thus to downsize and improve the cooling capacity. Can be achieved.

Next, an embodiment of the invention according to claim 2 will be described with reference to FIG. The present invention is one in which a plurality of holes 24 are formed in the plate 21.

Therefore, the vaporization area of the plate 21 becomes large, and furthermore, the air flowing in the air flow path 23 is disturbed, the evaporation of the water that wets the surface of the plate 21 is promoted, and the cooling capacity is improved. .

When securing the same cooling capacity as when the holes 24 are not formed, the number of plates 21 can be reduced, and the size and weight can be further reduced.

[0019]

[Effect of device]

 As described above, the invention according to claim 1 is provided with a plurality of sheets formed by a porous member, in which a water tank for storing water and a fan for taking in air from the outside and blowing the taken-in air to the outside are provided in the main body case. The plates are housed in the main body case, and the lower ends of these plates are immersed in the water in the water tank to form an air flow path for the air to flow between the plates. By circulating the air in the air flow path between the plates whose surface has been wetted by the removed water, the water that wets the surface of the plate is evaporated and the heat of vaporization is deprived of the cooled air. Cool air can be blown out to the outside, and a large vaporization area can be secured even if the outer diameter of the plate is reduced. It reduced it can, moreover, the plate becomes easier its manufacture because of the simple shape has the effect of such costs can be reduced.

As described above, the invention according to claim 2 has a plurality of holes formed in the plate in the invention according to claim 1, so that the vaporization area can be further increased and the gas flows in the air passage. It can create turbulence in the air, thus promoting the evaporation of water and improving the cooling efficiency, and if the cooling capacity is the same as if no holes were formed, the plate This has the effect that the number of sheets can be reduced and the size and weight can be further reduced.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of the invention according to claim 1.

FIG. 2 is an enlarged perspective view of a vaporizer.

FIG. 3 is a perspective view showing a carburetor according to an embodiment of the present invention.

FIG. 4 is a vertical cross-sectional side view showing a cold air fan previously filed by the present applicant as prior art.

[Explanation of symbols]

 4 body case 5 water tank 6 fan 21 plate 23 air flow path 24 hole

Claims (2)

[Scope of utility model registration request] 1. A water tank for storing water and a fan for taking in air from the outside and blowing the taken-in air to the outside are provided in the main body case, and a plurality of plates formed by a porous member are provided in the main body case. And a lower end portion of these plates are immersed in water in the water tank to form an air flow path between the plates, through which air flows. 2. The cold air fan according to claim 1, wherein the plate has a plurality of holes formed therein.