JP2011220644A - Cooler equipped with rotation type spray mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooler which is suitable for an open space or a largely scaled space which contributes to energy saving by a simple structure for preventing the falling of a waterdrop by preventing mist from being adhered to a nozzle or piping by injecting water from the nozzle while rotating it, and for obtaining a power for rotation with a reaction force of sprayed water from the nozzle.SOLUTION: There is provided a cooler including a rotation type spray mechanism configured such that a spray mechanism for injecting pressurized water in atmosphere as fine fog consists of a diversion unit fixed to a rotary joint connected to a water supply pipe to be rotatable, a plurality of sprayed water guide pipes connected to a plurality of passing water holes formed on the side face of the diversion unit, and a nozzle mounted on the top end thereof, wherein the sprayed water guide pipe is shallowly bent downward in the neighborhood of its connection part with the diversion unit, and bent to the tangential direction of the rotary orbital circle of the nozzle in the neighborhood of a nozzle mounting part or to a direction isolated from the tangential direction to the outside, and that the spray mechanism rotates with the reaction force of the sprayed water from the nozzle.

Description

  The present invention relates to a cooling apparatus provided with a rotary spraying mechanism that cools a large-scale space such as an outdoor space, a semi-outdoor open space, or a factory premises by injecting fine mist into the atmosphere.

When cooling an outdoor or semi-outdoor open space, or a large-scale space such as a factory premises, vaporization occurs when fine water droplets are ejected from multiple nozzles placed on a pillar or ceiling and evaporated in high-temperature air. May use heat. At this time, the water pressure is increased to about 6 MPa so that the sprayed water droplets do not hit people or objects, and water is atomized by a special nozzle and sprayed. It is possible to vaporize completely so as not to condense water droplets on the surface of people or things.
However, when this spraying device is installed in an open space outside or semi-outdoor, the sprayed water is flowed into the wind, and the expected evaporation distance cannot be secured depending on the wind direction, and the cold spray that circulates inside There is a risk that the surface of the nozzle cooled by water or the spray water supply pipe surface to the nozzle will adhere or condense and fall as water droplets into the cooling target space to wet people or objects.
In order to prevent this problem, Japanese Patent Application Laid-Open No. 2006-177575 (Patent Document 1)
“In a spraying system for lowering temperature by spraying pressurized water as a mist to lower the temperature of the target space, the pressure is applied from the orifice provided at one end to the cone-shaped spray area with the orifice at the top. A nozzle that sprays the water as a mist, and a water pipe that is connected to the other end of the spray nozzle and distributes the pressurized water to the spray nozzle. The center line of the nozzle is inclined more than half of the spray angle of the spray region downward with respect to a horizontal plane crossing the orifice toward the direction in which mist is sprayed from the orifice, or upward with respect to the horizontal plane. A spray system for cooling down, characterized in that it is tilted to a value equal to or greater than a value obtained by adding an angle of 5 degrees to half of the spray angle of the spray region "
The invention is disclosed.
In the present invention, as described in paragraphs [0009] to [0010] and [FIG. 1] of the specification, the spray nozzle for spraying mist is provided from the tip of a column or a ceiling vertically standing from the ground. It is provided at the tip of six extension pipes for separating a predetermined distance from the suspended spray header. The installation height of the spray nozzle is clearly defined as “4 m” although it is determined depending on the average particle size and the maximum particle size of the mist.
It is difficult to change the orientation of the orifice of such a highly installed spray nozzle after installation, and it is necessary to perform preliminary work such as collecting data on the wind direction and wind speed in the summer of the installation point at the time of installation. . Further, since the position of the spray head is fixed, there is a problem that mist cannot be sprayed evenly in the cooling target range even when there is no wind.
When the position of the spray nozzle is fixed as in Patent Document 1, in the target space where no wind is generated, such as outdoors, such as a semi-indoor, fine water droplets ejected from the spray nozzle are supplied to the same space one after another. Therefore, this minute space immediately becomes saturated water vapor pressure, and a phenomenon occurs in which evaporative cooling using latent heat does not proceed. That is, it is far from evaporation of fine water droplets at an ideal evaporation rate. However, the frequency at which wind does not occur at all in the target space is low, and the surrounding air is attracted by the spray of water droplets, convection due to the difference in the air heat distribution in the target space, etc. Although a minute portion of air is exchanged, if the starting force is small and the exchange of air is small, the above phenomenon occurs to some extent.

In order to spray and vaporize mist directly in the atmosphere as in the above invention, a distance of about 4 m is required. As a method for shortening the vaporization distance of this mist, Japanese Patent Application Laid-Open No. 2008-175520 (Patent Document 2)
“Spray toward the outside air inlet side in a vertically or horizontally installed humidified air generating passage (hereinafter referred to as a cylindrical passage) having an outside air inlet on one side and an air outlet on the other side. A nozzle assembly having at least one water spray nozzle or a plurality of water spray nozzles, and a fan downstream of the cylindrical passage so that a spray direction of the nozzle and an air flow direction conveyed by the fan face each other And either a dry bulb thermometer or a relative hygrometer and a wet bulb thermometer are arranged in a cylindrical passage near the outside air inlet, and either the dry bulb thermometer or the relative hygrometer and the wet bulb thermometer The cooling device is characterized in that the amount of water sprayed from the nozzle assembly is controlled based on the detected value to supply the cold air from the outlet ”
The invention is disclosed.
That is, in this invention, the vaporization distance is shortened by spraying the high-pressure water from the spray nozzle in a direction against the air flow taken into the cylindrical passage by the fan, and completely vaporized in the cylindrical passage and is discharged from the outlet. Moisture that supplies cold air that does not contain mist, and calculates the state value of the inlet air from the value detected by a temperature / humidity sensor, etc., located near the outside air intake, and can evaporate into the air taken from the inlet If the outside air is humid, such as when it rains, the latent heat cooling of the water by mist cannot be expected, and if the wet air is exposed to a person, it may be uncomfortable. By monitoring the state and automatically stopping the fan and high-pressure pump according to the situation, it is said that the effects such as comfort, energy saving, and prevention of dripping of water can be exhibited.
However, in this invention, it is said that the fan can be automatically stopped according to the state of the outside air to be taken in, but the evaporation rate of the fine water droplets in the minute space is ideal by actively replacing the air in the target space. However, although the cooling by the heat of vaporization is good, the power of the fan is necessary, and equipment for that purpose must be prepared.

JP 2006-177575 A JP 2008-175520 A

  The present invention has been made in view of the current state of the peripheral technology described above, and is jetted from a nozzle installed at the tip of a pipe that rotates in accordance with the rotation of a pipe extending in the horizontal direction around a suspended water supply pipe. The minute water droplets are dispersed by the rotational movement of the nozzles in the target space to be latent heat evaporated, and if seen in the differential minute part of the target space, the water droplets are supplied little by little while the air is replaced, and the target The space is expanded compared to the case where the nozzle is fixed, and the minute water droplets ejected from the nozzle evaporate at an ideal evaporation rate in the differential minute portion of the target space, so that There is no possibility that minute water droplets ejected from the nozzle will fly without evaporating the differential minute portion of the target space where the saturated vapor pressure has been reached, and the nozzle and the piping surface to the nozzle will be moved forward. A small amount of water droplets adhere to the water and prevent it from falling into the cooling target space and wetting people and objects, and the sprayed microscopic water droplets are expanded by the rotation of the nozzle in the target space. In addition to being dispersed in the ambient air that is replaced by the spray nozzle, the spray air is actively mixed with the dry air by the swirling air flow induced by the spray nozzle rotation to shorten the vaporization distance of the spray water, and at the same time the spray nozzle rotation Therefore, an object of the present invention is to provide a cooling device adapted to an open space or a large-scale space that contributes to energy saving with a simple structure.

The present inventor has solved the above problems by the following means.
(1) In a spray cooling system that sprays fine water droplets into the air and cools large spaces such as outdoor or semi-outdoor open spaces or factory premises with the heat of vaporization caused by evaporation into the air.
A spray mechanism that injects water supplied through a water supply pipe pressurized through a pump as fine water droplets into the air has a vertical water supply pipe, and the other end on the lower end of the water supply pipe is rotatable in the horizontal direction. A rotary joint that is sealed and connected other than the water passage hole, a water separator that is fixed to the other end of the rotary joint, and that has a plurality of water passage holes formed on a side surface thereof, and a water passage of the water separator A plurality of spray water conduits radially projectingly connected to the hole and a nozzle attached to the tip of the spray water conduit, and the spray water conduit has a shallow angle in the vicinity of the connection with the water divider The spray mechanism is bent in the vicinity of the nozzle mounting portion at a tangential direction of the rotation orbit circle of the nozzle or at an angle away from the tangential direction, and by the reaction force of the spray water from the nozzle Is not configured to rotate Cooling device having a rotary atomizing mechanism, characterized in that.
(2) When a plurality of nozzles attached to the tip of the spray water conduit reach a predetermined position by the rotation of the rotary joint, all the nozzles are configured to inject water in the same direction. A cooling device comprising the rotary spray mechanism according to (1) above.
(3) The spray water conduit can be attached to and detached from the water separator so that the number of spray water conduits connected to the side surface of the water separator can be adjusted according to the amount of spray water, and the spray water conduit is not connected. The cooling device provided with the rotary spray mechanism according to item (1), wherein the water hole is configured to be closed by a closing tool such as a screw.
(4) The spray water conduit is provided with a pipe joint that can be pivotally connected to a water passage hole formed in a side surface of the water separator, and the spray angle of the nozzle is adjusted from the horizontal direction to the depression direction so that the spray mechanism The cooling device provided with the rotary spray mechanism according to the item (1) or (3), wherein the rotation speed of the motor is adjustable.
(5) The rotary spray mechanism according to any one of (1) to (3) above, wherein one or a plurality of nozzles for spraying downward are installed in the middle of the spray conduit. Cooling device equipped with.
(6) Fan blades are mounted along the spray water conduit, or a plurality of fan blades are mounted at the lower part of the water divider, and the fan mechanism (9) is rotated by rotating the spray mechanism (1). Any one of the preceding items (1) to (5), characterized in that it is configured to cause a downward or upward air flow by rotating integrally and to promote the diffusion effect of the ejected minute water droplets. A cooling device comprising the rotary spray mechanism according to claim 1.
(7) The rotation according to (6) above, wherein the fan blades are attached via a reversing mechanism that reverses the twist angle, and the direction of the airflow can be switched upward or downward. Air conditioner equipped with an electric spray mechanism.

The following effects are exhibited by the cooling device provided with the rotary spray mechanism of the present invention.
<1> A spray mechanism that injects water supplied through a water supply pipe pressurized through a pump into the air as fine water droplets can be rotated in the horizontal direction at the water supply pipe provided vertically and its lower end. A rotary joint to be connected, a water separator fixed to the other end of the rotary joint and having a plurality of water passage holes formed on a side surface thereof, and radially projecting and connected to the water passage holes of the water separator The spray water conduit comprises a plurality of spray water conduits and a nozzle attached to the tip of the spray water conduit, and the spray water conduit is bent downward at a shallow angle in the vicinity of the connection with the water separator, and the nozzle is mounted. The sprayed water droplet is a minute portion that is different from the sprayed water droplet by being bent at a tangential direction of the rotation orbit circle of the nozzle in the vicinity of the portion or at an angle away from the tangential direction. Will spurt into space, Even if the elephant space is looked at finely, it does not immediately reach the state of saturated vapor pressure, it approaches the ideal evaporation speed, so that the water droplets can be completely vaporized with a short evaporation distance, and sprayed from the nozzle Fine water droplets do not adhere to the spray water conduit, and therefore, there is no possibility that the water droplets will drop into the cooling target space and wet people or objects.
Also, since the spray mechanism rotates due to the reaction force of the spray water from the nozzle, it does not require any power source for rotation, it is easy to operate with a simple structure and contributes to energy saving. A cooling device suitable for a space or large-scale space can be obtained.
<2> In addition to the effect of <1> above, since the nozzle itself rotates, there is no need to adjust the spray direction by determining the wind direction and wind velocity at that point during installation, and the rotation by the nozzle reaction force Disturbs the flow of ambient air by generating vortices due to movement of objects such as spray water conduits and attracting ambient air by spraying water droplets, so that the spray water and air are actively mixed and vaporization of the spray water is promoted and vaporized The distance is shortened.

<3> The spray water conduit of the spray mechanism is detachably attached to the water passage hole of the water divider, and the water passage hole to which the spray water conduit is not connected is closed with a closure such as a screw. Therefore, the number of spray water conduits can be adjusted according to the amount of spray water.
In addition, the spray water conduit is connected via a pipe joint that can be pivotally connected to a water passage hole formed in the side surface of the water separator, and the spray angle of the nozzle can be adjusted from horizontal to depression, The amount of spray water, the spray angle, and the rotation speed of the spray mechanism can be selected as optimum values for the space to be cooled, and the restriction on the installation height of the nozzle can be relaxed.
<4> Since one or a plurality of nozzles for spraying downward are provided in the middle of the spray conduit, spraying directly below the cooling device is possible, and the cooling effect by vaporization of the spray water is further enhanced.

<5> Fan blades are mounted along the spray water conduit, or a plurality of fan blades are mounted at the lower part of the water divider, so that the rotation of the spray mechanism (1) (downward or upward) ) Since airflow is generated and the spray water is diffused, vaporization of the spray water is promoted and the cooling effect is enhanced.
<6> The fan blade is attached so that its twist angle can be reversed, and the direction of the airflow can be switched upward or downward, so that the direction of the airflow is changed according to the ambient air temperature, and cooling by spraying is more effective. Can be done automatically.

The structure perspective view of the spray mechanism in the air conditioner provided with the rotary spray mechanism of the present invention Top view (a) and side view (b) of the rotary spray mechanism shown in FIG. Side view of the spray mechanism with a pipe joint that pivotally connects the spray water conduit to the water hole Side view of a spray mechanism with a downward nozzle in the middle of the spray water conduit Sectional drawing which shows the structure of the spray mechanism which equipped the fan blade | wing. Sectional drawing which shows the structure of the spray mechanism which reversed the twist angle of the fan blade | wing so that airflow could be reversed up and down

EMBODIMENT OF THE INVENTION The form for implementing the air conditioner provided with the rotary spray mechanism of this invention is demonstrated based on the figure of an Example.
FIG. 1 is a perspective view of the structure of a spray mechanism in a cooling apparatus having a rotary spray mechanism according to the present invention. FIG. 2 is a top view (a), a side view (b), and FIG. 3 of the rotary spray mechanism shown in FIG. Is a side view of a spray mechanism provided with a pipe joint that pivotally connects the spray water conduit to the water hole, FIG. 4 is a side view of the spray mechanism having a downward nozzle in the middle of the spray water conduit, and FIG. FIG. 6 is a cross-sectional view showing the structure of a spray mechanism equipped with fan blades, and FIG. 6 is a cross-sectional view showing the structure of the spray mechanism in which the twist angle of the fan blades is reversed so that the airflow can be reversed up and down.
In the figure, 1 is a spray mechanism, 2 is a rotary joint, 3 is a water diverter, 4 is a water passage hole, 5 is a spray water conduit, 6 and 6 'are nozzles, 7 is a closure, 8 is a pipe joint, and 9 is a fan. The blades 10 are water pipes, and 11 is an umbrella.

The cooling device provided with the rotary spraying mechanism of the present invention includes a spraying mechanism 1 for injecting fine water droplets into the air, which is pressurized by a pump (not shown) and supplied via a water pipe 10. 1 and 2, as shown in FIG. 1, a water supply pipe 10 provided vertically and an internal connection rotation shaft pipe (not shown) by a main body fixed to a lower end portion of the water supply pipe 10 (an opening through which water passes in an up and down direction, A hollow tube with an opening toward the side water hole of the water divider described below at the bottom is supported by a bearing so that the upper and lower portions can be rotated in the main body by a bearing, and is slid by packing that realizes a water seal up and down. The rotary joint 2 connected to be rotatable in the horizontal direction by being dynamically sealed, and a plurality of water passage holes 4 fixed to the other end of the rotary joint 2 (the other end of the connecting rotary shaft tube). And a water separator 3 sealed with water other than the water passage hole at the other end, and the water separator A plurality of spray water conduits 5 that are radially connected to the water flow holes 4 and nozzles 6 attached to the tips of the spray water conduits 5. The nozzle 6 is bent downward at a shallow angle α in the vicinity of the connecting portion of the nozzle 6, and is bent at an angle θ in the direction tangential to the rotation orbit circle of the nozzle 6 or away from the tangential direction in the vicinity of the nozzle mounting portion. The spray mechanism 1 is configured to rotate by the reaction force of the spray water from.
Further, when the plurality of nozzles (6) attached to the tip of the spray water conduit (5) reach a predetermined position by the rotation of the rotary joint (2), all the nozzles (6) are water in the same direction. Is configured to spray.
The spray water conduit 5 can be attached to and detached from the water separator 3 so that the number of spray water conduits 5 connected to the side surface of the water separator 3 can be adjusted according to the amount of spray water required. The water passage hole 4 to which the conduit 5 is not connected is closed by a closing tool 7 such as a screw.
In FIG. 1 and FIG. 2, the spray water conduit 5 is illustrated as four, but may be two or three, and may be even more numerous. Therefore, in FIG. 2, the water holes 4 are formed at intervals of 30 degrees. Although the case has been shown, it is not limited to this shape.

Further, in order to adjust the rotation speed of the spray mechanism 1 while keeping the spray amount constant, as shown in FIG. 3, a pipe joint that can rotate through the spray water conduit 5 to the water hole 4 and can be connected at any position. It is also preferable that the nozzle 6 is connected to a water passage hole 4 formed on the side surface of the water separator 3 through 8 so that the injection angle β of the nozzle 6 can be adjusted from the horizontal to the depression direction.
Furthermore, as shown in FIG. 4, one or more nozzles 6 ′ spraying downward in the middle of the spray conduit 5 may be mounted to enable spraying directly under the spray mechanism 1 to enhance the cooling effect. preferable.

As shown in FIG. 5, the second embodiment of the cooling device provided with the rotary spray mechanism of the present invention has a flow of air flowing upward or downward to the spray mechanism 1 described in the first embodiment. Fan blades 9 are provided for generating the airflow, and the direction of the airflow is changed according to the ambient temperature so as to more effectively perform cooling by spraying.
As shown in FIG. 5 (a), a plurality of fan blades 9 are attached to the lower part of the water separator 3, or one fan blade 9 is attached to the lower part of the spray water conduit 5 as shown in FIG. 5 (b). ing.
And about the several fan blade | wing 9 attached to the lower part of the water separator 3, the root part of the fan blade | wing 9 can be inserted in the boss | hub part side surface of the shaft lower end extended below the said water separator 3. FIG. A plurality of grooves, for example, are radially cut from the center in five directions, and the roots of the fan blades 9 are inserted into the grooves for mounting. This groove is preferably formed so that it can be inserted even if the fan blades 9 are reversed.
Further, at the lower part of the spray water conduit 5, for example, two bolt-shaped horns projecting downward at the base position and the tip position are projected downward, and the fan blade 9 has the above-mentioned It is preferable to provide a structure in which a through hole for inserting the horn is provided at a position corresponding to the position of the horn of the spray water conduit 5 so that the horn can be inserted from either the front or back side and can be fixed to the tip of the horn with a nut.
In this way, any fan blade 9 is attached via a reversing mechanism so that its twist angle can be reversed, and the airflow generated by the rotation of the fan blade 9 can be reversed up and down. preferable. In addition, an umbrella 11 is provided above the spray mechanism 1 so that the upward airflow is reflected downward by the umbrella 11.
As a result, as shown in FIG. 6 (a), when the upper layer air is hot and stagnant, an upward air flow is generated to disturb the stagnant air and to be actively mixed with the spray water blown from the nozzle. Then, by cooling with the heat of vaporization of the spray water, the cooled air stream is guided to the cooling target space. On the other hand, as shown in FIG. 6 (b), when the temperature of the upper layer is not so high, the air stream is directed downward. By directly applying the flow of the cooled air, it is possible to give a cooler feeling and to provide a comfortable cooling space in any case.
The rotation of the fan blade 9 is performed by the reaction force of the spray water sprayed from the nozzle 6 of the spray mechanism 1, so that no other power source is required for the rotation of the fan blade 9, which saves energy. The effect can also be expected.

1: Spray mechanism 2: Rotary joint 3: Water diverter 4: Water flow hole 5: Spray water conduit 6, 6 ': Nozzle 7: Closure 8: Pipe joint 9: Blade 10: Water pipe α: Spray water conduit Bending angle near the diverter connection part β: Nozzle injection angle θ: Bending angle near the nozzle mounting part of the spray water conduit

Claims (7)

In a cooling device that sprays fine water droplets into the air and cools large spaces such as outdoor or semi-outdoor open spaces or factory premises with the heat of vaporization caused by evaporation into the air,
A spray mechanism (1) that injects water supplied through a water pipe (10) that has been pressurized by a pump into the air as fine water droplets is placed horizontally at a vertically arranged water pipe (10) and its lower end. A rotary joint (2) that is sealed and connected other than the water passage hole at the other end of the outer end so as to be rotatable in the direction, and a plurality of water passage holes (4) that are fixed to the other end of the rotary joint (2). A water separator (3), a plurality of spray water conduits (5) radially projectingly connected to the water passage holes (4) of the water separator (3), and the spray water conduits The spray water conduit (5) comprises a nozzle (6) attached to the tip of (5), and the spray water conduit (5) is bent downward at a shallow angle (α) in the vicinity of the connection with the water separator (3). Also, in the vicinity of the nozzle mounting portion, the direction of the tangential direction of the rotation orbit circle of the nozzle, or the direction away from the tangential direction Bent at an angle (theta), and cooling device wherein by the reaction force of the water spray spraying mechanism (1) is equipped with a rotary atomizer mechanism characterized by comprising is configured to rotate from the nozzle (6). When a plurality of nozzles (6) attached to the tip of the spray water conduit (5) reach a predetermined position by the rotation of the rotary joint (2), all the nozzles (6) spray water in the same direction. The cooling device provided with the rotary spraying mechanism according to claim 1, wherein the cooling device is configured to do so.   The spray water conduit (5) can be attached to and detached from the water separator (3) so that the number of spray water conduits (5) connected to the side surface of the water separator (3) can be adjusted according to the amount of spray water. The rotation hole according to claim 1 or 2, wherein the water passage hole (4) to which the spray water conduit (5) is not connected is configured to be closed by a closing tool (7) such as a screw. Air conditioner equipped with an electric spray mechanism.   The spray water conduit (5) includes a pipe joint (8) that can be rotatably connected to a water passage hole (4) formed in a side surface of the water separator (3), and an injection angle of the nozzle (6). The rotary spray according to any one of claims 1 to 3, wherein (β) is adjusted from the horizontal to the depression direction so that the rotation speed of the spray mechanism (1) can be adjusted. Cooling device with mechanism.   The rotary spray mechanism according to any one of claims 1 to 4, wherein one or a plurality of nozzles (6 ') for spraying downward are provided in the middle of the spray conduit. Cooling device equipped with.   The fan blades (9) are mounted along the spray water conduit (5), or a plurality of fan blades (9) are mounted at the lower part of the water separator (3). The fan blades (9) rotate integrally as a result of rotating to cause a downward or upward air flow, and the diffusion effect of the ejected minute water droplets is promoted. A cooling device comprising the rotary spray mechanism according to any one of claims 1 to 5.   The rotary type according to claim 6, wherein the fan blade (9) is mounted via a reversing mechanism that reverses the twist angle, and the direction of the airflow can be switched upward or downward. Cooling device with a spray mechanism.