JP7129592B2 - Cooling system - Google Patents

Description

The present invention relates to a cooling device with a blower and a spray nozzle.

Conventionally, this type of cooling device uses a guide casing to rectify the airflow blown out by the blower in a direction substantially parallel to the rotation axis of the blower. It conveys in the direction (for example, patent document 1).

FIG. 4 shows a conventional cooling device described in Patent Document 1. As shown in FIG.

As shown in FIG. 4, the conventional cooling device includes a blower 6 having a plurality of blades, a hollow substantially cylindrical guide casing 20 arranged around the blower 6 for rectifying the airflow blown out by the blower 6, A spray nozzle 4 for spraying mist substantially parallel to the rotation axis is provided inside the guide casing 20 in a substantially hollow cylindrical shape.

JP 2009-108679 A

The airflow blown out by the blower 6 is rectified substantially parallel to the rotation axis by the guide casing 20 .

The mist sprayed by the spray nozzle 4 moves substantially parallel to the rotation axis.

However, in the configuration of the conventional cooling device, since the airflow containing fog moves only in a direction substantially parallel to the rotating shaft of the blower 6, there is a problem that the fog does not spread over a wide range.

SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional problems, and to enable the mist to be diffused over a wide range because the blowing air current containing the mist moves spirally.

In order to solve the conventional problems, the cooling device of the present invention includes a blower for generating an air flow, a substantially cylindrical housing having a substantially circular opening at the bottom, and a suction unit communicating between the housing and the blower. an opening, a substantially cylindrical inner cylindrical member provided in the inner space of the housing and arranged inside the opening so that a part of the inner cylindrical member protrudes from the opening to the outside of the housing, and the opening and the inner cylindrical member. A space composed of an outer peripheral surface and having an outer peripheral edge that is open in a substantially circular shape and an inner peripheral edge that is smaller in diameter than the outer peripheral edge, and is configured by the inner wall surface of the housing and the outer wall surface of the inner cylindrical member. and a part of the inner cylindrical member that protrudes outside the housing, A spray nozzle that sprays mist, and an outlet that is provided at one end of the spray nozzle and sprays the mist, and the central axis of the spray nozzle is on a virtual circle centered on the central axis of the outlet: It has an inclination angle θ with respect to a tangential line in substantially the same direction as the circumferential velocity vector of the airflow blown out from the outlet, and the inclination angle θ is provided in the range of 0°<θ<90° .

The airflow blown out from the blowout port moves spirally around the central axis of the blowout port (hereinafter referred to as blowout airflow).

The mist sprayed by the spray nozzle spreads toward the center of the central axis of the spray nozzle, but most of the mist moves in the direction of the inclination angle θ with respect to the tangential line on the imaginary circle.

As a result, in the internal space of the spirally flowing blowing airflow, the fog moving in the centrifugal direction with the inclination angle θ flows toward the blowing airflow and mixes with the blowing airflow.

In this cooling device, since the blown air current containing the fog moves spirally, the fog can be diffused over a wide range.

1 is a horizontal sectional view of a cooling device according to a first embodiment of the present invention; FIG. 1 is a vertical sectional view of a cooling device according to a first embodiment of the present invention; FIG. Vertical sectional view of a cooling device according to a third embodiment of the present invention The figure which shows the conventional cooling device described in patent document 1

A first invention comprises a blower for generating an air flow, a substantially cylindrical housing having a substantially circular opening at the bottom, a suction port communicating between the housing and the blower, and an internal space of the housing. It is composed of a substantially cylindrical inner cylindrical member arranged inside the opening so that a part of it protrudes from the opening to the outside of the housing, and the outer peripheral surface of the opening and the inner cylindrical member. Part of the airflow generated by the blower in the space formed by the inner wall surface of the housing and the outer wall surface of the inner cylindrical member, which has an outer peripheral edge that is open in a shape and an inner peripheral edge that is smaller than the diameter of the outer peripheral edge. A blowout port that blows out the swirling airflow generated by sending out to the outside of the housing, a spray nozzle that is arranged in the portion of the inner cylindrical member that protrudes outside the housing, and sprays the mist, and a spray nozzle and an outlet for spraying mist provided at one end of the spray nozzle, and the central axis of the spray nozzle passes through the outlet and is blown out from the outlet in a virtual circle centered on the central axis of the outlet. It has an inclination angle θ with respect to a tangent in substantially the same direction as the circumferential velocity vector of the airflow.

The airflow blown out from the outlet moves spirally around the central axis of the outlet.

The mist sprayed by the spray nozzle moves in the direction of the inclination angle θ with respect to the tangent line on the virtual circle.

As a result, in the internal space of the spirally flowing blowing airflow, the fog moving in the centrifugal direction with the inclination angle θ flows toward the blowing airflow and mixes with the blowing airflow.

In this cooling device, since the blown air current containing the fog moves spirally, the fog can be diffused over a wide range. Further, in the first invention, the airflow blown out by the blower flows along the inner wall surface of the housing after passing through the suction port, forming a swirling flow around the central axis of the housing. As the airflow swirls in the space inside the housing, the pressure inside the housing increases, and the pressure difference between the pressure inside the housing and the atmospheric pressure outside the housing pushes the swirling airflow out of the outlet. is blown out, the initial velocity increases. Therefore, even if the natural wind blows, the fog will not be blown away by the natural wind by increasing the initial velocity of the airflow, and the airflow including the fog will move spirally, so this cooling system can spread the fog over a wide area. can spread to

Furthermore, the first invention is provided especially when the inclination angle θ of the first invention is in the range of 0° < θ < 90°.

The direction of travel of the mist sprayed by the spray nozzle is in the range of 0° to 90° with respect to the direction of travel of the spirally-moving blowing airflow, so the fog does not turn around due to the blowing airflow.

Therefore, collision between the straight-advancing fog and the curled-up fog can be avoided, so that the particle size of the mist sprayed by the spray nozzle can be maintained without increasing.

Even when it is difficult to accelerate the evaporation of the fog, such as when the outside environment is highly humid, it is possible to avoid the fog from becoming large due to the collision of the fogs, and the fog does not scatter.

As a result, the blown air current containing the mist moves spirally, so that the cooling device can diffuse the mist over a wide range .

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the present invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a horizontal sectional view of the cooling device according to the first embodiment of the present invention, and FIG. 2 is a vertical sectional view of the cooling device according to the first embodiment of the present invention.

In FIG. 1, the cooling device of the present invention has a blowout port 1 and a spray nozzle 4 having a discharge port 5 for discharging mist at one end. The central axis of the spray nozzle 4 passing through the discharge port 5 and extending away from the central axis of the discharge port 1 is the circumference of the airflow discharged from the discharge port 1 in a virtual circle centered on the central axis of the discharge port 1. It has an inclination angle θ with respect to a tangent in substantially the same direction as the directional velocity vector.

The outlet 1 is composed of an opening composed of a substantially circular outer peripheral edge 3 centered on the central axis of the outlet 1 and an inner peripheral edge 2 smaller in diameter than the outer peripheral edge 3 and substantially concentric with the outer peripheral edge 3. . However, the inner peripheral edge 2 and the outer peripheral edge 3 may have other shapes such as a polygonal shape.

The spray nozzle 4 is a nozzle for spraying mist. The cooling device of the present invention is provided with a spray nozzle group consisting of a plurality of spray nozzles 4 . Adjacent spray nozzles 4 belonging to the spray nozzle group are provided at predetermined intervals in the circumferential direction. The shape of the spray nozzle 4 may be circular, rectangular, or any other shape.

In addition, it is desirable that the average particle diameter of the mist is 20 μm or less. As a result, the fog of 20 μm or less evaporates in the atmosphere, and the surrounding air can be effectively cooled by the transpiration effect without wetting the clothes of the passers-by and the surroundings such as the road surface.

Moreover, the cooling device of the present invention further includes an air temperature detection unit 11, a humidity detection unit 12, a water volume control unit 13, and a water pipe .

The temperature detection unit 11 is a temperature sensor that detects the temperature.

The humidity detection unit 12 is a humidity sensor that detects humidity.

Although FIG. 2 shows that the temperature and humidity of the outside environment are detected by the temperature detection unit 11 and the humidity detection unit 12 rather than the blown airflow, they may detect the temperature and humidity of the internal environment of the blown airflow.

The water volume control unit 13 is composed of a CPU (Central Processing Unit) (not shown) and a storage device such as a non-volatile memory or a volatile memory. It is a device that controls the flow rate of

The water volume control unit 13 controls the flow rate of water based on the temperature detected by the temperature detection unit 11 and the humidity detected by the humidity detection unit 12, and sprays fog to the spray nozzle 4 through the water pipe 14. Allow the spray to run intermittently. Alternatively, high-pressure air supplied from an air compressor (not shown) may be supplied to the spray nozzle 4 via an air pipe (not shown), and the high-pressure air and water may collide with each other in the spray nozzle 4 to spray fine mist.

The operation and effect of the cooling device configured as described above will be described below.

The airflow blown out from the blowout port 1 spirally moves around the central axis of the blowout port 1 .

The mist sprayed by the spray nozzle 4 moves in the direction of the inclination angle θ with respect to the tangent line on the virtual circle.

As a result, in the internal space of the spirally flowing blowing airflow, the fog moving in the centrifugal direction with the inclination angle θ flows toward the blowing airflow and mixes with the blowing airflow.

In this cooling device, since the blowing air current containing fog moves spirally, the fog can be spread over a wide range.

(Embodiment 2)
In FIG. 1, the tilt angle θ is attached in the range of 0° < θ < 90°.

The direction of travel of the mist sprayed by the spray nozzle 4 is in the range of 0° to 90° with respect to the direction of travel of the spirally-moving blowing airflow, so the fog is not rolled back by the blowing airflow.

Therefore, collision between the straight advancing fog and the curling fog can be avoided, so that the particle size of the mist sprayed from the spray nozzle 4 can be maintained without increasing.

Even when it is difficult to accelerate the evaporation of the fog, such as when the outside environment is highly humid, it is possible to avoid the fog from becoming large due to the collision of the fogs, and the fog does not scatter.

As a result, the blown air current containing the mist moves spirally, so that the cooling device can diffuse the mist over a wide range.

(Embodiment 3)
FIG. 3 shows a vertical sectional view of a cooling device according to a third embodiment of the present invention.

The cooling device has a blower 6 , a housing 8 , a suction port 9 and an inner cylindrical member 10 . The blowout port 1 is composed of an opening 7 opened in the lower part of the housing 8 and the outer peripheral surface of the inner cylindrical member 10 .

The blower 6 sends out a pressurized airflow in one direction, and may be a multi-blade fan, a propeller fan, or the like.

The housing 8 has a bottom surface 15 , a top surface 16 opposed to the bottom surface 15 , and side surfaces 17 connecting the bottom surface 15 and the top surface 16 , and the blower 6 is connected to the side surfaces 17 . The housing 8 shown in FIG. 3 has a hollow cylindrical shape. However, the housing 8 may have other shapes such as a hollow polygonal shape.

The inner cylindrical member 10 fixes the spray nozzle 4, and may have other shapes such as a cylindrical shape and a polygonal shape.

The suction port 9 communicates the internal space of the housing 8 with the blower 6 and is provided on the side surface 17 . As a result, part of the airflow sent out by the blower 6 circulates in the space formed by the inner wall surface of the housing 8 and the outer wall surface of the inner cylindrical member 10 . In addition, since the space formed by the inner wall surface of the housing 8 and the outer wall surface of the inner cylindrical member 10 does not have a sharply curved flow path, pressure loss is unlikely to occur, and the dynamic pressure component is converted into a swirl flow to the outlet 1. can lead.

As the airflow swirls in the interior space of the housing 8, the pressure in the interior space of the housing 8 is increased, and the pressure difference between the pressure in the interior space of the housing 8 and the atmospheric pressure in the exterior space of the housing 8 causes Since the swirl flow is pushed out from the outlet 1, the initial velocity of the airflow increases.

By increasing the initial velocity of the airflow, even if the natural wind blows, the fog will not be blown away by the natural wind, and the airflow containing the fog will move spirally, so this cooling system can spread the fog over a wide area. .

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention.

INDUSTRIAL APPLICABILITY As described above, the cooling device according to the present invention is capable of diffusing fog over a wide range, and can be applied to applications such as indoor units of air conditioners.

REFERENCE SIGNS LIST 1 air outlet 2 inner peripheral edge 3 outer peripheral edge 4 spray nozzle 5 outlet 6 blower 7 opening 8 housing 9 suction port 10 inner cylindrical member 11 temperature detector 12 humidity detector 13 water volume controller 14 water pipe 20 guide casing

Claims (1)

a blower for generating a flow of air;
a substantially cylindrical housing having a substantially circular opening at the bottom;
a suction port that communicates between the housing and the blower;
a substantially cylindrical inner cylindrical member provided in the internal space of the housing and arranged inside the opening so that a part thereof protrudes from the opening to the outside of the housing;
It is composed of the opening and the outer peripheral surface of the inner cylindrical member, and has an outer peripheral edge that is open in a substantially circular shape and an inner peripheral edge that is smaller than the diameter of the outer peripheral edge. an outlet for blowing out a swirling airflow generated by part of the airflow generated by the blower into a space formed by the outer wall surface of a cylindrical member, and
a spray nozzle disposed at a portion of the inner cylindrical member protruding outside the housing and spraying mist;
a discharge port provided at one end of the spray nozzle for spraying the mist,
The central axis of the spray nozzle passing through the outlet and extending in a direction away from the axis of the outlet is the circumference of the airflow emitted from the outlet on a virtual circle centered on the central axis of the outlet. has an inclination angle θ with respect to a tangent line in substantially the same direction as the directional velocity vector,
The cooling device , wherein the inclination angle θ is provided in a range of 0°<θ<90° .

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