JPH11318271A - Cooling unit for water tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain excellent cooling effect, realize the cost reduction and energy saving, and exhibit high resistance to corrosion in the cooling system that is attached to the water tanks for tropical fishes and cools the water in the tanks so that its temperature may not exceed the suitable one for tropical fishes. SOLUTION: This cooling system for tropical fish tanks comprises a casing 15 that is set in the water tank, a filler 16 that is contained in the casing 15 to increase the exposure effect between water W and air A, an air-blowing fan 17 that is set over the filler 16 and blows the cooling air A into the casing 15, a cooling water supply system 19 that feeds the water W in the tank 2 over the filler 16, and a sprinkler 18 that is rotatably arranged between the filler 16 and the fan 17, and is rotated with the air from the fan 17, while the water is fed up to the position over the filler 16 and sprinkled uniformly over the filler 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an aquarium for breeding tropical fish (tropical saltwater fish and tropical freshwater fish),
It is mainly used in summer when the water temperature in the water tank rises, and cools the water in the water tank using heat of vaporization so that the water temperature in the water tank does not rise above the temperature suitable for breeding tropical fish The present invention relates to an improvement in the cooling device for a water tank as described above.

[0002]

2. Description of the Related Art Generally, when breeding tropical fish in a home, office, store, or the like, a tropical fish tank equipped with various devices such as an air supply device, a filtration device, a heater, and a thermostat (automatic temperature controller). (Not shown) is used.

[0003] In the above-mentioned tropical fish tank, the water in the tank is usually 2 ° C to 4 ° C lower than the outside air temperature. This is because there is evaporation of water from the upper surface of the water tank and the filtration devices, and the water is cooled by the heat of vaporization at that time. However, on the other hand, a water circulation pump (pumping pump) that constitutes a part of the filtration device is a heat source, and also contributes to raising the water temperature.

[0004] When breeding tropical fish at home or the like, the temperature of the water in the aquarium is reduced by the fact that the tropical fish themselves live in a warm and constant water area. It is necessary to control the temperature between 23 ° C and 28 ° C throughout the year. Therefore, it is necessary to heat the water in the water tank with a heater in winter, and to cool the water in the water tank with a cooling device described later in summer.

By the way, when the tropical fish tank is placed in the room where the room cooler is installed, it is not necessary to cool the tank itself because the temperature of the room is low when the cooler is operating. However, even in such a case, the cooler may be turned off when leaving the house, and the aquarium itself is not necessarily placed in a place that benefits from the cooler, but in a place exposed to direct sunlight May be placed in

[0006] Therefore, in the above cases, there are many cases where the temperature of the water rises and tropical fish die. Especially,
In closed rooms in summer, the water temperature in the aquarium can easily exceed 30 ° C.

[0007] Therefore, cooling devices for water tanks having various structures for cooling the water in the water tank have been developed and put to practical use.

[0008]

Conventionally, this type of water tank cooling device includes, for example, a cooler using a refrigerant, an electronic cooling device using the Peltier effect, or an existing dust removal filter containing water. Send a wind over the
2. Description of the Related Art A cooling device using vaporization heat for promoting water vaporization and cooling water is known (all are not shown).

However, a cooler using a refrigerant or an electronic cooling device using the Peltier effect is considerably more expensive than a heater used for keeping heat, the cost is as high as about 100,000 yen, and the inside of a water tank is expensive. There is a problem that corrosion progresses violently due to water and salt, and the performance is remarkably deteriorated in about one year. Of course, there is also a problem that power consumption is large and energy saving cannot be achieved. Further, the cooling device utilizing the heat of vaporization has a situation in which the contact between water and air is insufficient and the cooling effect is scarcely high despite the high cost.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in the conventional water tank cooling apparatus. The object of the present invention is to reduce costs and save energy, and to exhibit excellent cooling effects with high corrosion resistance. It is an object of the present invention to provide a cooling device for a water tank.

[0011]

Means for Solving the Problems In order to achieve the above object, an invention according to claim 1 of the present invention is provided in a water tank, a casing provided with an outlet for water, housed in the casing, A filler for increasing the contact effect between water and air, a fan disposed above the filler and supplying cooling air into the casing, and supplying water in a water tank to a position above the filler. A water supply device, and a water spray body rotatably disposed between the filler and the fan, configured to rotate by air from the fan and to evenly spray water supplied to a position above the filler to the filler. There is a feature in doing.

The invention according to claim 2 of the present invention is characterized in that a baffle is provided between a fan and a watering body to prevent water splashed from the watering body from splashing on the fan.

According to a third aspect of the present invention, the filler is a felt cylindrical body having a large number of holes formed in the longitudinal direction, so that the contact area of air and water is increased and the contact time is increased. The feature is that you can take a long time.

According to a fourth aspect of the present invention, there is provided a water supply device comprising: a rising pipe which is disposed on the center line of the casing and the filler and whose open upper end is located above the filler; It is characterized by comprising a submersible pump connected via a hose, pumping water in the water tank by the submersible pump, and ejecting the water from the upper end opening of the riser pipe into the casing.

According to a fifth aspect of the present invention, the water supply device is disposed on the center line of the casing and the filler, and the open upper end is located above the filler and the open lower end has the open lower end. It is characterized in that it has an air lift pump structure including a riser immersed in a water tank and an air pump for supplying air into the lower end of the riser via a hose.

According to a sixth aspect of the present invention, a water sprinkling body is rotatably fitted to a bearing portion provided in a casing, and a tubular portion positioned on a center line of the casing, and a lower end portion of the tubular portion. A scatter plate that collides with water spouted from a riser of the water supply device and scatters in a disk shape, a plurality of arms having different lengths radially provided on an outer peripheral edge of the scatter plate, A plurality of guide plates provided at the distal end of the arm and collided with water scattered in a disc shape and dropped onto the filler, and a plurality of water spray bodies provided on a plurality of arms or cylinders and air from a fan. It is characterized by comprising a plurality of blades for rotating the whole, and disposing each arm on the outer peripheral edge of the flying plate so that the sprinklers balance when rotating.

[0017] According to a seventh aspect of the present invention, the sprinkler plate of the sprinkler is formed in a disk shape, the outer peripheral edge thereof is formed in a downward tapered shape, and provided at the tip of each arm. It is characterized in that the upper ends of the guide plates are bent inward.

The invention according to claim 8 of the present invention is characterized in that the casing, the baffle, the riser, and the sprinkler are each formed of a plastic material.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a tropical fish tank 2 in which a water tank cooling device 1 according to a first embodiment of the present invention is installed. In FIG. 1, 1 is a water tank cooling device, and 2 is glass or Acrylic water tank, 3 is an air pump, 4
Is an air hose, 5 is an air bubble generator made of air stone, 6 is a heater, 7 is a thermostat, 8 is a filtration tank containing filter media (not shown) such as coral sand and wool mat,
9 is a pump for pumping water W (seawater or fresh water) in the water tank 2 into the filtration tank 8, 10 is a strainer connected to a suction port of the pump 9, and 11 is a discharge connected to a discharge port of the pump 9. A pipe, 12 is a shower pipe for uniformly dispersing the water W into the filtration tank 8, 13 is a discharge pipe for returning the water W filtered in the filtration tank 8 to the water tank 2, and 14 is a plastic covering the opening of the water tank 2. The lid.

The thermostat 7 has a heater 6
One that can control both the water tank cooling device 1 is used. The thermostat 7 includes a main body, a power outlet, a temperature sensor, a heater outlet, a cooling device outlet, and the like. When the water temperature in the water tank 2 drops below the set temperature, the heater 6 is turned on, and the water temperature becomes the set temperature. When it rises above, the water tank cooling device 1 is turned on. In addition, components other than the water tank cooling device 1 and the above-described thermostat 7 are configured in the same manner as the conventionally known components, and thus description thereof is omitted here.

A water tank cooling device 1 according to a first embodiment of the present invention is configured to cool water W in a water tank 2 by utilizing heat of vaporization, as shown in FIGS. As shown, a casing 15 installed in the water tank 2, a filler 16 stored in the casing 15, and a fan 17 disposed above the filler 16 and supplying cooling air A into the casing 15. Water supply device 1 for supplying water W in water tank 2 to a position above filler 16 in casing 15
9, and is rotatably disposed between the filler 16 and the fan 17, and the water W supplied into the casing 15 is filled with the filler 16.
And a sprinkler 18 for sprinkling water.

More specifically, the casing 15 is integrally formed of a plastic material. As shown in FIGS. 2 to 4, the casing 15 is connected to a cylindrical outer cylinder 15a and a lower end of the outer cylinder 15a. A bottom wall 15b for closing the lower end opening of the outer cylinder 15a, and a peripheral wall 1 connected to the outer peripheral edge of the bottom wall 15b.
5c and a grid portion 15d continuously provided on the lower surface side of the bottom wall 15b.
It is composed of An outlet 15e for discharging water W in the outer cylinder 15a to the outside of the casing 15 is formed at a lower end portion of the outer cylinder 15a and a part of the peripheral wall 15c. Further, at the lower end position of the inner peripheral surface of the outer cylinder 15a, locking projections 15f for supporting the filler 16 are provided at equal angles (9
(Every 0 degrees).

As shown in FIG. 1, the casing 15 has a lid 14 covering the opening of the water tank 2 with a double-sided tape (not shown) attached to the lower end surface of the peripheral wall 15c and the lower end surface of the grid portion 15d. The water W in the casing 15 flowing out of the outlet 15 e is returned to the inside of the water tank 2 through a return hole 14 a formed in a part of the lid 14.

Incidentally, at the upper end position in the casing 15,
As shown in FIGS. 2 and 4, a plastic baffle 20 for preventing the water W scattered from the water spray body 18 from splashing on the fan 17 is provided. This baffle 20
The water W scattered from the water spray body 18 can be prevented from splashing on the fan 17, and the cooling air A from the fan 17 is formed in a lattice shape so as to evenly reach the filler 16. 15a is detachably mounted in 15a. In the center of the baffle 20, a bearing portion 21 in which the sprinkler 18 is rotatably supported is integrally formed. The bearing portion 21 has a downward supporting shaft 21a on which the sprinkler 18 is rotatably fitted.

The filler 16 is housed and held in the casing 15 to enhance the contact effect between the water W and the air A, and is as effective as possible when the water W and the air A exchange heat. To be able to do so, a material is selected that has the largest possible contact area and the longest contact time.

That is, as shown in FIGS. 2 and 5, the filler 16 is made of a felt-made cylindrical body having a number of holes 16a formed in the longitudinal direction, and is housed in the outer cylinder 15a of the casing 15. And is supported and mounted on the locking projection 15f.
The vertical holes 16a formed in the filler 16 have a substantially square planar shape, and are arranged concentrically and radially in the filler 16. Therefore, filler 1
6 has a plurality of vertically oriented holes 16a, annular ribs 16b, and radial ribs 16c. Further, a central hole 16d through which a rising pipe 19a of a water supply device 19 described later is inserted is formed in the center of the filler 16.

The fan 17 has the same structure as a conventionally known fan, and includes a motor 17a and a motor 17a.
And a plastic blade 17b attached to the shaft. The fan 17 is provided on the outer cylinder 15 of the casing 15.
It is housed and fixed in a plastic case 22 attached to the upper end of the casing a. The cooling air A is sucked from above the casing 22 and can be sent into the outer cylinder 15a. The fan 17 is controlled by the thermostat 7 and operates when the water temperature in the water tank 2 rises above a temperature suitable for breeding tropical fish.

The water supply device 19 supplies the water W in the water tank 2 to a position above the filler 16 in the casing 15, and as shown in FIGS. 1 and 2, the center of the bottom wall 15b of the casing 15 is provided. And a plastic rising pipe 19a whose upper end is positioned above the center line of the casing 15 and the filler 16 and is open above the filler 16 and is immersed in the water tank 2. It comprises a known submersible pump 19b and a flexible silicone-type hose 19c that connects the lower end of the riser pipe 19a and the discharge port of the submersible pump 19b. The water supply device 19 is controlled by the thermostat 7 similarly to the fan 17, and operates when the water temperature in the water tank 2 rises above a temperature suitable for breeding tropical fish.

The sprinkler 18 is integrally formed of a plastic material. As shown in FIGS. 2, 6 and 7, the sprinkler 18 is rotatable and axially movable on a support shaft 21a of a bearing 21 provided on a baffle 20. (A vertical direction) is fitted to the outside so as to be movable in the vertical direction, and the cylindrical portion 18 a is located on the center line of the casing 15.
And a plate-shaped scattering plate 18b, which is connected to the lower end of the cylindrical portion 18a and collides with the water W ejected from the riser pipe 19a of the water supply device 19 to scatter the disk into a disk shape, and an outer peripheral edge of the scattering plate 18b. And a plurality of arms 18c radially connected to the portion and having different lengths, and water W scattered in the shape of a disc colliding with the distal end of each arm 18c and falling onto the filler 16. Guide plates 18d and a plurality of arms 18c
And water sprinkler 1 by air A from fan 17.
And a plurality of blades 18e that rotate the entirety of the blade 8. Further, the scattering plate 18b has an outer peripheral edge formed in a downward tapered shape, and is devised so that the water W colliding with the central portion of the scattering plate 18b splatters satisfactorily and reliably to the filler 16 side. . Furthermore, each guide plate 18d has its upper end bent inwardly in an arc shape, and is designed so that water W scattered in a disk shape does not jump upward when it collides with each guide plate 18d. ing.

Since the arms 18c of the sprinkler 18 have different lengths and weights, the arms 18c are arranged on the outer peripheral edge of the scattering plate 18b so as to balance the sprinklers 18 when they rotate. The length of each arm 18c is determined by the amount of water W that has collided with the guide plate 18d.
6b and 16c, respectively. Further, the number, size, inclination angle, etc. of the blades 18e are
The air A flows from the fan 17 into the outer cylinder 15a of the casing 15.
Are selected so that the sprinkler 18 can be rotated when the water is sent.

The sprinkler 18 is provided with a baffle 20.
And is rotatably and vertically movably fitted to a support shaft 21 a of a bearing portion 21 provided at the same, and is prevented from falling off by a rising pipe 19 a of a water supply device 19. That is, the sprinkler body 18 tends to fall off from the support shaft 21a because its cylindrical portion 18a is fitted to the downward support shaft 21a, but the spatter plate 18b comes into contact with the upper end of the rising pipe 19a. It is retained from the part 21.
The water spray 18 is pushed upward by a small amount by the water W spouted from the rising pipe 19a. At this time, the gap between the splash plate 18b of the sprinkler 18 pushed upward and the upper end of the rising pipe 19a is:
The water W spouted from the riser pipe 19a is set so as to collide with the scatter plate 18b and flow radially along the lower surface of the scatter plate 18b. Therefore, the water W that has passed through the gap between the scattering plate 18b and the riser pipe 19a becomes a disk and scatters.

Next, the operation of the water tank cooling device 1 having the above configuration will be described. When the temperature of the water in the aquarium 2 where the tropical fish are raised rises above a set temperature, a temperature sensor (not shown) of the thermostat 7 detects the temperature, and based on this, the thermostat 7 is turned on and the aquarium cooling device 1 is turned on. Of the fan 17 and the water supply device 19 are operated.

That is, when the fan 17 operates, the air A near the water tank cooling device 1 is sucked into the case 22, passes through the outer cylinder 15a and the filler 16, and is discharged from the outlet 15e to the outside of the casing 15. You. At this time, the outer cylinder 15a
A part of the air A passing through the inside
e, and the sprinkler 18 is rotated.

On the other hand, when the water supply device 19 operates, the water tank 2
The water W inside is pumped up by a submersible pump 19b, and the water W is supplied to a rising pipe 19a via a hose 19c, and is spouted from a top opening of the rising pipe 19a toward the rotating sprinkler 18.

Water W spouted from riser pipe 19a
Collides with the center of the splash plate 18b of the water spray body 18 to push up the whole water spray body 18 by a small amount.
It scatters in the shape of a disk through the gap between 9a and the scattering plate 18b. At this time, since the outer peripheral edge of the scatter plate 18b is inclined in a downward tapered shape, the water W colliding with the central portion of the scatter plate 18b scatters satisfactorily and reliably to the filler 16 side. The sprinkler 18 is pushed up by the water W spouted from the riser 19a,
a, the outer cylinder 1
The air A pushed into the inside 5a rotates smoothly. That is, the sprinkler 18 is
Since it rotates while floating on the water W spouting from a, the resistance is eliminated and the rotation is smooth and smooth.

Most of the water W scattered in a disk shape by the scatter plate 18b collides with each guide plate 18d provided at the distal end of the arm 18c, turns downward and falls, and falls into the filler 16. Sprinkled. At this time, since the whole watering body 18 is rotated by the air A from the fan 17,
Each guide plate 18d is filled with the filler 1 while sequentially changing its position.
6 is sprayed with water W. That is, the water W scattered in the shape of a disk is substantially evenly sprayed onto the filler 16 by the rotating spray body 18. Further, since the upper end of each guide plate 18d is curved in an arc shape inward,
The sprinkled water W hardly jumps upward. Even if there is water W jumping upward, since this water W collides with the baffle 20 disposed above the watering body 18,
No more jumping. As a result, the watering body 18
Is not said to be splashed on the fan 17 disposed above the fan 17, and the fan 17 is not adversely affected by the water W or salt.

The water W that has scattered in a disk shape and has not collided with the guide plate 18d collides with the inner peripheral surface of the outer cylinder 15a and flows down along the inner peripheral surface of the outer wall, or directly flows through the filler. 1
6 will be sprinkled.

The water W sprayed to the filler 16 by the water spray 18 and flowing down the filler 16, the water W flowing down the inner peripheral surface of the outer cylinder 15 a, and splashes during water spraying are discharged from the fan 17. The heat is exchanged by the cooling air A pushed into the cylinder 15a to promote the vaporization. That is, the water W in the outer cylinder 15a is cooled by the heat of vaporization. At this time,
The water W sprinkled on the filler 16 sufficiently contacts the air A and flows down in the filler 16 over time, so that the cooling effect can be greatly enhanced.

In this manner, the water W cooled by the heat of vaporization in the outer cylinder 15a is supplied to the outlet 15 of the casing 15.
e, and flows down from the return port 14a of the lid 14 into the water tank 2 to lower the water temperature in the water tank 2. or,
The cooling air A in the outer cylinder 15a is discharged to the atmosphere from the outlet 15e together with the cooled water W.

FIGS. 8 and 9 show a water tank cooling apparatus 1 according to a second embodiment of the present invention. The water tank cooling apparatus 1 is provided with cooling air supplied into a casing 15. A is discharged directly from the casing 15 into the water tank 2 so that air can be sent over the water surface, and the water supply device 19 has an air lift pump structure. In the water tank cooling device 1, the casing 15 and the water supply device 1
Other than 9 (that is, the filler 16, the fan 17, the sprinkler 18, the baffle 20, the bearing 21, the case 22, etc.)
Has exactly the same structure as that of the water tank cooling device 1 according to the first embodiment, and a description thereof will be omitted. Further, the same members and parts as those shown in FIGS. 1 to 7 are denoted by the same reference numerals.

The casing 15 is integrally formed of a plastic material. As shown in FIG. 9, the casing 15 is integrally provided with a plastic lid 14 and has an outlet 15e communicating with the water tank 2. Cylindrical outer cylinder 15a and the inner peripheral surface of the outer cylinder 15a are continuously provided at equal angles (every 90 degrees),
A locking projection 15f for supporting the filler 16;
a, a water supply device 1 to be described later,
And a support 15g for supporting the 9 riser tubes 19a '.

Thus, the casing 15 is driven by the fan 17.
The cooling air A supplied into the inside is discharged from the outlet 15e of the casing 15, flows directly into the water tank 2, collides with the water surface in the water tank 2, and flows along the water surface. As a result, evaporation of the water W in the water tank 2 is promoted,
The water temperature is lowered by the heat of vaporization at that time.

As shown in FIGS. 8 and 9, the water supply device 19 is disposed on the center line of the casing 15 and the filler 16 and is inserted into and supported by the support 15g of the casing 15.
An open upper end is located above the filler 16 and an open lower end is immersed in the water tank 2 with a rising pipe 19a '(pumping pipe), and a hose 19c' is inserted into the lower end of the riser pipe 19a '. And an air lift pump structure comprising an air pump 3 for supplying air A through the air riser pump 19a. The air A is supplied into the lower end of the riser pipe 19a 'to generate air bubbles in the riser pipe 19a'.
The specific gravity of the water W in 9a 'is reduced so that the water W is ejected into the casing 15 from the upper end of the rising pipe 19a'. The air pump 3 uses an air pump 3 for sending air A to the air bubble generator 5, but another air pump (not shown) is disposed outside the water tank 2, and the air pump is connected to the rising pipe 19a '. Air A
May be sent.

The water tank cooling device 1 according to the second embodiment is similar to the water tank cooling device 1 according to the first embodiment.
The same operation and effect as described above can be obtained. In addition, the water tank cooling device 1 supplies the water W cooled by the heat of vaporization in the casing 15 from the outlet 15 e of the casing 15 to the water tank 2.
In addition, since the cooling air A in the casing 15 is discharged directly from the outlet 15e into the water tank 2 to promote the evaporation of the water W in the water tank 2, the cooling effect is further improved. It will be further improved. Further, since the air pump 3 constituting a part of the water supply device 19 is disposed outside the water tank 2, there is no possibility that the air pump 3 acts as a heat source to raise the water temperature in the water tank 2.

In the cooling device 1 for a water tank according to the first embodiment, the casing 15 is attached to the lid 14 that covers the opening of the water tank 2. In this case, the casing 15 may be attached to the side wall of the water tank 2.

In the water tank cooling device 1 according to the first embodiment, the peripheral wall 1 is attached to the bottom wall 15b of the casing 15.
5c are connected to each other, and the outlet 15e is formed in a part of the outer cylinder 15a and the peripheral wall 15c. However, in another embodiment, the outlet 15e formed in the peripheral wall 15c and the outer cylinder 15a is provided. May be omitted, and an outlet (not shown) may be formed in the bottom wall 15b to return the cooled water W in the outer cylinder 15a from the outlet of the bottom wall 15b into the water tank 2.

In the water tank cooling device 1 according to the second embodiment, the casing 15 and the lid 14 covering the opening of the water tank 2 are integrally formed. In the embodiment, the casing 15 and the lid 14 may be formed separately. Also, the casing 15
And the lid 14 are formed separately, the casing 1
5 may be attached to the side wall of the water tank 2.

In the water tank cooling device 1 according to the first and second embodiments, the casing 15 and the baffle 2
0 is formed separately, but in another embodiment, the casing 15 and the baffle 20 may be formed integrally.

In the cooling device 1 for a water tank according to the first and second embodiments, the filler 16 is a felt-made cylindrical body having a large number of holes 16a formed in the longitudinal direction. The filler 16 is not limited to the above, and any shape and structure of the filler 16 can be used as long as the contact area between the air A and the water W can be increased and the contact time can be extended. May be. Further, the material of the filler 16 is not limited to felt, and the material of the filler 16 may be a plastic material or a metal material.

In the water tank cooling device 1 according to the first and second embodiments, the filling material 1 is contained in the casing 15.
6 is housed, but in another embodiment, two fillers 16 may be housed in the casing 15 in two upper and lower stages, or the filler 16 may be housed in the casing 15. Three or more may be accommodated in 15.

In the water tank cooling apparatus 1 according to the first and second embodiments, the cooling air A is pushed into the casing 15 by the fan 17. In this case, the cooling air A may be sucked into the casing 15 using the fan 17.

In the water tank cooling device 1 according to the first embodiment, the water supply device 19 is connected to the rising pipe 19a,
Although the submersible pump 19b and the hose 19c are used, in other embodiments, the submersible pump 19b is omitted and the water W is supplied into the casing 15 using the water pump 9 of the filtration device. You may do it. That is, a bifurcated branch pipe (not shown) is connected to the discharge port of the water pump 9 of the filtration device, and a hose 19c is connected to one port of the branch pipe to supply water W to the riser pipe 19a. May be. Further, a water supply device 19 having an air lift pump structure may be used for the water tank cooling device 1 according to the first embodiment.

In the water tank cooling device 1 according to the first embodiment, the casing 15 and the riser pipe 19a
Are separately formed, and the riser 19a is connected to the casing 1
5 is inserted into and supported by the bottom wall 15b, but in another embodiment, the casing 15 and the riser pipe 19 are supported.
a may be integrally formed.

In the water tank cooling device 1 according to the second embodiment, the casing 15 and the riser pipe 19a
Are separately formed, and the riser 19a is connected to the casing 1
5 is inserted into and supported by the support 15g. However, in another embodiment, the casing 15 and the riser 1 are supported.
9a may be integrally formed.

In the cooling device 1 for a water tank according to the first and second embodiments, the water spray body 18 has a plurality of arms having different lengths on the outer peripheral edge of the disc-shaped scattering plate 18b. 18
c, and a guide plate 18d is provided at the tip of each arm 18c. However, the watering body 18 is not limited to the above, and if the water W can be evenly sprayed on the filler 16 The shape and structure of the watering body 18 may be of any type.

In the cooling device 1 for a water tank according to the first and second embodiments, nine guide plates 18d whose upper end portions are bent in a curved manner are arranged around the scattering plate 18b. However, the number and shape of the guide plates 18d are not limited to those described above, and any number and shape of guide plates 18d may be used as long as water can be evenly sprayed on the filler 16. .

In the water tank cooling device 1 according to the first and second embodiments, the four blades 1 are attached to the arm 18c.
Although the number of blades 8e is provided, the number of blades 18e is not limited to the above, and any number of blades 18e may be used as long as the sprinkler 18 can be rotated. or,
Although each blade 18e is provided on the arm 18c, each blade 18e may be provided on the cylindrical portion 18a.

[0058]

As described above, in the water tank cooling device according to the first aspect of the present invention, the water pumped from the water tank to the filler housed in the casing by the water sprinkler also arranged in the casing. Is uniformly distributed, and cooling water supplied from the fan into the casing cools the water flowing down in the filler by heat of vaporization. That is,
The water tank cooling device of the present invention cools water by heat of vaporization using a relatively inexpensive filler or a fan. As a result, the water tank cooling device of the present invention can achieve a significant reduction in cost as compared with a conventional cooler using a refrigerant or an electronic cooling device using the Peltier effect.
Further, the power consumption is smaller than that of the conventional device, and energy can be saved. Furthermore, since water is cooled using heat of vaporization, there is no fear of causing air pollution unlike a cooler using a refrigerant. Of course, even when the heat of vaporization is used, an excellent cooling effect can be obtained because the water and the air are brought into contact with each other using the filler in the casing. In addition, the structure of the water tank cooling device itself is relatively simple and can be easily installed in an existing water tank, which is extremely convenient.

In the cooling device for a water tank according to the second aspect of the present invention, a baffle is provided between the fan and the water spray body to prevent water splashed from the water spray body from splashing on the fan. The fan can be prevented from being damaged by water and salt, and the life of the fan can be extended.

In the cooling device for a water tank according to the third aspect of the present invention, since the filler is a felt cylindrical body having a large number of holes formed in the longitudinal direction, the contact area between air and water is increased. And the contact time can be extended. As a result, the cooling effect is greatly enhanced.

In the water tank cooling device of the fourth aspect of the present invention, since the water supply device is composed of a riser, a hose and a submersible pump, the structure of the water supply device is simple and inexpensive.

In the water tank cooling device according to claim 5 of the present invention, since the water supply device has an air lift pump structure,
The structure of the water supply device is simple and inexpensive, and the water supply device itself does not act as a heat source to raise the water temperature in the water tank.

In the cooling device for a water tank according to a sixth aspect of the present invention, a plurality of arms having different lengths are provided on an outer peripheral edge of a scatter plate for dispersing water in a disc shape. Since a guide plate for guiding the water scattered in the shape of a disc to fall onto the filler is provided at the tip of the, water can be evenly sprayed on the filler. As a result, the filler can be evenly wetted, the water evaporates quickly and in large quantities, and the cooling effect is further enhanced.

In the cooling device for a water tank according to a seventh aspect of the present invention, the outer peripheral edge of the spray plate of the water spray body is formed to have a downward tapered shape, and the upper end of the guide plate provided at the tip of each arm. Since each part is bent inward, the water scattered in a disc shape can be surely and well sprinkled onto the filler, and the sprinkled water can more reliably jump upward. Can be prevented.

In the cooling device for a water tank according to claim 8 of the present invention, since the casing, the sprinkler, the baffle and the riser are each formed of a plastic material, most of the device is formed of a plastic material. become. As a result, it is possible to provide an apparatus which is extremely resistant to corrosion without being corroded by water or salt in the water tank.

[Brief description of the drawings]

FIG. 1 is a perspective view of a tropical fish tank provided with a tank cooling device according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the water tank cooling device.

FIG. 3 is a bottom view of a casing of the water tank cooling device.

FIG. 4 is a sectional view taken along line II of FIG. 2;

FIG. 5 is a plan view of a filler.

FIG. 6 is a bottom view of the watering body.

FIG. 7 is a plan view of a watering body.

FIG. 8 is a perspective view of a tropical fish tank provided with the tank cooling device according to the second embodiment of the present invention.

FIG. 9 is a longitudinal sectional view of a water tank cooling device according to a second embodiment.

[Explanation of symbols]

1 is a water tank cooling device, 2 is a water tank, 3 is an air pump, 15
Is a casing, 16 is a filler, 16a is a hole of the filler, 1
7 is a fan, 18 is a watering body, 18a is a tube portion, 18b is a scatter plate 18c, an arm, 18d is a guide plate, 18e is a blade, 19 is a water supply device, 19a and 19a 'are risers, 19b is a submersible pump, 19c , 19c 'is a hose,
20 is a baffle, 21 is a bearing, A is cooling air, and W is water.

Claims (8)

[Claims] 1. A casing (15) provided in a water tank (2) and provided with an outlet (15e) for water (W), housed in the casing (15), and containing water (W) and air (A). (16) for improving the contact effect of the filler, and the filler (16)
A fan (17) which is disposed at a position above the casing and supplies cooling air (A) into the casing (15); and a water tank (2).
A water supply device (19) for supplying water (W) therein to a position above the filler (16), and a water supply device (19) rotatably disposed between the filler (16) and the fan (17); And a sprinkler (18) that is rotated by air from the container and that evenly sprays water (W) supplied to a position above the filler (16) to the filler (16). Cooling system. 2. A baffle (20) is provided between the fan (17) and the water spray body (18) to prevent water (W) scattered from the water spray body (18) from splashing on the fan (17). The cooling device for a water tank according to claim 1, wherein: 3. The filler (16) is a felt-made cylindrical body having a large number of holes (16a) formed in the longitudinal direction to increase the contact area between air (A) and water (W). 2. The contact time can be extended.
Or the cooling device for a water tank according to claim 2. 4. The water supply device (19) is connected to a casing (1).
5) and a riser (19a) arranged on the center line of the filler (16) and having an open upper end located above the filler (16), and a riser (19a) via a hose (19c). And a submersible pump (19b) connected to the submersible pump (19b).
The cooling device for a water tank according to any one of claims 1, 2 and 3, wherein the water is pumped up by 9b) and ejected from the upper end opening of the riser pipe (19a) into the casing (15). 5. The water supply device (19) is connected to a casing (1).
5) and a riser which is arranged on the center line of the filler (16) and whose open upper end is located above the filler (16) and whose open lower end is immersed in the water tank (2). An air lift pump structure comprising an air pump (3) for supplying air (A) into a lower end of a riser pipe (19a ') through a hose (19c'). The cooling device for a water tank according to claim 2 or claim 3. 6. The watering body (18) is connected to a casing (15).
A cylindrical portion (18a) rotatably fitted to a bearing portion (21) provided therein and positioned on a center line of the casing (15).
And a water supply device (1) provided at the lower end of the cylindrical portion (18a).
Water (W) spouted from the riser (19a) of 9)
A scattering plate (18b) for colliding with each other and scattering in a disk shape;
A plurality of arms (18c) having different lengths radially provided on the outer peripheral edge of the scattering plate (18b);
Water (W) provided at the tip of c) and scattered in a disk shape
And a plurality of guide plates (18d), which are caused to collide with each other and fall onto the filler (16), and a plurality of arms (18c) or a cylindrical portion (18a). And a plurality of blades (18e) for rotating the whole of the sprinkler body (18), and each arm (18c) is attached to the outer peripheral edge of the scattering plate (18b) so that when the sprinkler body (18) rotates, the arms are balanced. 2. The method according to claim 1, wherein the first, second, third, and fourth arrangements are arranged.
Or the cooling device for a water tank according to claim 5. 7. A sprinkler plate (18b) of a watering body (18) is formed in a disk shape and its outer peripheral edge is formed in a downward tapered shape, and is provided at a tip end of each arm (18c). The cooling device for a water tank according to claim 6, wherein the upper ends of the guide plates (18d) are bent inward. 8. A casing (15), a baffle (2)
7. The water tank according to claim 1, wherein the riser pipe (19a) and the water spray body (18) are each formed of a plastic material. Cooling system.