JPS588809B2 - aquarium - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an aquarium used for breeding fish, fish farming, ornamental fish, etc.

Conventional aquarium fish tanks have a pump attached to the top of the tank to circulate the water, and a heater placed in the water to maintain the water temperature.

Therefore, when changing the water or cleaning the aquarium, these electrical parts must be removed, and the water and electricity tend to come into contact, resulting in insufficient safety.

Furthermore, since the pump, P material, heater, etc. were installed on the top of the water tank, the appearance was not good.

Therefore, an object of the present invention is to provide an aquarium that can improve safety and appearance by separating the aquarium, and is easy to change water and clean.

This invention is characterized in that a heat receiving plate is provided at the bottom of the water tank, a heater is provided on the mounting table on which the water tank is removably placed, and the heater heats the heat receiving plate.This heats the water in the water tank. It is said that

Therefore, when changing the water or cleaning the aquarium, since the heater is not installed in the aquarium, the heater does not get in the way, and there is no risk of short-circuiting of electrical parts during cleaning, making it safe. There is no obstacle to viewing the fish, which makes it easier to keep tropical fish.

A first embodiment of the invention is shown in FIGS. 1 to 17.

That is, as shown in FIGS. 1 to 3, this aquarium is composed of an aquarium section 1 equipped with a lachrymal hypercirculation function and used to raise ornamental fish, and a mounting table 2 equipped with a heat insulating and driving device. The water tank section 1 further includes a bottomed cylindrical water tank container 3 for storing water, and a lid 4 that closes the upper end of the container 3.

The aquarium container 3 is molded from a transparent material such as acrylic resin or glass, and its bottom plate 5 is provided slightly above the lower end surface of the peripheral wall 6, as shown in FIG.

The center part of the bottom plate 5 is composed of a non-magnetic plate 7 made of aluminum, brass, etc., and two circular heat receiving plates 8 made of stainless steel with good heat transfer efficiency are arranged on a diameter line with the center part in between. Further, a sensor heat transfer plate 9 made of the same material is formed on a diameter line perpendicular to the sensor heat transfer plate 9, and these are tightly attached with a packing material to prevent water leakage.

A partition 10 forming a circulation path is installed on the upper surface of the bottom plate 5.

The partition stand 10 has a truncated cone shape with a height that is extremely low compared to its diameter, and its maximum diameter is slightly smaller than the inner diameter of the aquarium container 3, and when its center is aligned with the center of the bottom plate 5, the periphery will be approximately There will be a gap of about 1 to 2 mm.

The partition 10 can be made, for example, by fitting together a molded body forming a truncated conical top surface and a molded body forming a bottom surface.

The partition table 1B has a pump mounting hole 11 formed in its center to communicate between its top and bottom surfaces, and a plurality of legs 12 that form a gap with the bottom plate 5 on its bottom surface. ing.

By installing this partition stand 1ro on the bottom plate 5 of the aquarium container 3, a ring-shaped circulation suction port 13 is formed at the peripheral edge of the partition stand 100, and the circulation suction port 13 is formed by the legs 12-.
3 and the pump device hole 11 are formed.

There is a fifth hole between the pump device hole 11 and the non-magnetic plate 7 of the bottom plate 5.
A pump device 15 is attached as shown in the figure.

The caning 16 of this pump device 15 forms an inflow passage 17 at the lower part of its circumferential side, an outflow passage 18 at the upper part,
Bearings 21 and 22 are provided in the upper part 19 and the bottom part 2, and the bearing 2
A shaft 23 is erected between 1 and 22. An impeller 2 is mounted on the upper part of the shaft 23.
4 is attached, and a plaque magnet 23a is attached to the lower part, and the driven side permanent magnets 25 are attached in a circular arrangement, and the lower surface of the permanent magnet 25 is brought closest to the non-magnetic plate 7.

The permanent magnet 25 has a magnetic pole on its lower surface.

This pump device 15 is connected to a permanent magnet 2 by means of a magnetic coupling, which will be described later.
5 rotates, turning the impeller 24, thereby sucking water from the inflow passage 17 and discharging it to the outflow passage 18.

A circular recess 26 is provided on the top surface of the partition stand 10 as shown in FIG.
is formed, and the inner cylinder 27 is removably positioned and installed.

The inner cylinder 27 is made of the same transparent material as the aquarium container 3 and has a cylindrical shape with a bottom.
8 are erected.

The lower end of the discharge pipe 28 communicates with the pump mounting hole 11 of the partition 10 and communicates with the outflow passage 18 of the casing 16.

At the bottom of the inner cylinder 27, waterwheel sand and pebbles 29 are piled up.
Aquatic plants 30 are planted on sand 29.

As shown in FIG. 8, a plurality of overflow notches 31 and guide grooves 32 are formed at the upper end of the inner cylinder 27.
As shown in FIGS. 4 and 6, an annular swirling flow generator 33 is placed.

As shown in FIG. 9, the swirling flow generating book is integrally formed with a projection 35 projecting inwardly corresponding to the guide groove 32 on the hole image of the central hole 34. are placed in the guide grooves 32 .

The width of the protrusion 35 is smaller than the width of the guide grooves 32, so that the generator 33 can rotate within the range of the guide grooves 32.

An operating lever is integrally formed on the outer edge of the swirling flow generator 33 for the rotation operation.

Further, the notch 31 is provided on the lower side of the periphery of the swirling flow generator 33.
Inverted Y-shaped water guides 37 are formed corresponding to the above, and are arranged in the vicinity of the notches 31 on the upper outer surface of the inner cylinder 27 when the generated tree 33 is arranged.

A lacrimal cistern 38 is installed on the upper end surface of the inner tube 27 as shown in FIGS. 4 and 6.

The lachrymal cistern 38 has a cylindrical shape with a bottom as shown in FIGS.
It is fitted and placed in the upper end opening of 7.

In addition, a lower end portion of an air introduction pipe 40 having an inner diameter slightly larger than the outer diameter of the discharge pipe 28 is passed through the center of the bottom portion 39 .
A communication hole 41 is arranged and formed in a circular shape around the center of 9.
A guide cylinder 42 is connected to the lower surface of the bottom portion 39, with a communication hole 41 located inside and located inside the circular rib 39a.

A circular slat 44 with legs 43 is installed on the bottom 39, and an air introduction pipe 40 passes through the center hole of the slat 44.
A discharge pipe 28 passes through the inside of the air introduction pipe 40.

As shown in FIG. 7, the air introduction pipe 40 supports the discharge pipe 28 by forming a large number of guide ribs 40a on the inner surface in the axial direction.

The outlet pipe 28 has a collar 45 near the lower end of the air introduction pipe 40.
A bubble mixing inlet 40b is provided at both the lower end opening of the introduction pipe 40.
is formed.

On the drainboard 44, there is a door material 46 for biological doors such as river sand or non-woven fabric.
A plurality of support protrusions 4 protrude from the upper end of the air introduction pipe 40, and a mesh-like physical filter 48 is mounted and supported on the upper surface of the protrusion 4 to cover the upper end opening of the furnace filtration tank 38. There is.

A central hole 49 is formed in the center of the filter 48, and the upper end of the discharge pipe 28 protrudes.

A step 49a is attached to the edge of the central hole 49, a recess 49b is formed in the step surface, and the baffle plate 5ro is connected to the support 51...
- The inner projecting surface of the lower end is spring-fitted and supported by the recess 49b, and faces above the discharge pipe 28 so as to close the pipe end opening.

A lid 4 is placed on the upper opening of the aquarium container 3 as shown in FIGS. 1 to 4.

As shown in FIG. 4, the lid body 4 is provided with a hinge 8 with a bracket 52 protruding from one side thereof, and air circulation holes 54 are arranged in a circular shape on the surface.

A plurality of support springs 55 . . . are provided on the inner surface of the lid body 4 , a support lighting lamp 56 is attached thereto, and a moisture-proof cover 57 with good transmittance is attached to cover the lamp 56 .

The upper part of the UP overtank 38 is located at the center of the inner surface of the lid 4.

Water is supplied to the aquarium container 3 by opening the lid 4 of the aquarium section 1 constructed as described above.

The maximum water surface H is near the inverted Y-shaped water guide 37 provided in the swirling flow generator 33.

In addition, the fish F is placed in a space surrounded by the inner surface of the aquarium container 3, the outer peripheral surface of the inner cylinder 27, and the tapered surface of the partition stand 10, that is, the ice fish section 5.
You can swim freely within 8.

By supplying water to the ice fish section 58, the pump device 15 is submerged in water through the circulation suction port 13, and is in a state where priming water is supplied.

When the pump device 15 operates (the driving means will be described later), water circulates within the water tank 1.

The circulation route is as shown in FIG. 13 (indicated by arrows in FIG. 4).

That is, when the pump device 15 operates, water is pumped from the pump device 15 to the discharge pipe 28.

At the upper end of the discharge pipe 28, the discharge pipe 28 collides with the baffle plate 50, spraying water in all directions, and water is sprayed into the lachrymal cistern 38.

In the P filter tank 38 , it passes through a filter 48 , permeates through a filter medium 46 , passes through a drainboard 44 and reaches a guide cylinder 42 .

At this time, air bubbles are mixed into the flowing water at the air bubble mixing port 40a, as in the case of the spray structure, due to the flow of water (FIG. 6).

When the water exits the guide tube 42, it falls into the inner tube 27.

The water overflows the overflow notch 31 in the inner cylinder 27 and flows into the aquatic part 58.

At this time, operate the lever 36 of the swirl flow generator K33 to
When the inverted Y-shaped water guide 37 is released from the notch 31 as shown in Figure 0a, it falls vertically downward from the water pot notch 31, and in the ice fish section 58, the flow circulates in a U-shape from the inside to the outside as shown by the arrow in Figure 4. is formed.

Furthermore, when the water guide 37 is positioned as shown in FIG. 10b, water flows down along the tapered surface of the guide, and a falling component in the tangential direction of the inner cylinder 27 is added. It begins to spiral around the outer peripheral surface of the 2T.

Furthermore, if the water guide 37 is configured as shown in FIG. 10C, the direction of its spiral rotation will be reversed.

In the ice fish section 58, the ice flows through the circulation passage 14 through the circulation suction port 13 at the bottom and is sucked into the inflow passage 17 of the pump device 15.

Note that when the lid body 4 is opened to drain water from the water tank 1, the baffle plate 50
It is convenient to remove the water, connect a hose (not shown) to the upper end of the discharge pipe 28, operate the pump device 15, drain most of the water, and then tilt the container 3 to drain the water.

In addition, the food provided to the fish is administered by opening the lid 4, and the urine and remaining food excreted by the fish in the ice fish section 58 are removed from the partition table 1.
The water falls onto the tapered surface of the ice fish section 58 and naturally moves to the circulation suction port 13, following the recirculation water of the ice fish section 58, and is introduced into the P tank 38 by the pump device 15, where it is purified.

That is, in the filtration tank 38, the solids are physically separated by the filter 48.

Next, in the door material 46, aerobic decomposition bacteria and nitrifying bacteria that adhere to the surface of the door material 46 perform biological oxidation of organic matter such as feces, leftover food, and ammonia, and produce harmless nitrogen such as nitrate nitrogen. Nitrified into compounds.

This nitrogen compound becomes fertilizer for aquatic plants.

The clean water thus purified flows to the ice fish section 58.

As a result, fresh water is always maintained in the ice fish section 58 for a long period of time.

Dissolved oxygen, which is necessary for the growth of fish, is constantly absorbed by the carbonic acid assimilation effect of the aquatic plants 30, the mixture from the air bubble mixing port 4roa, the mixture when it falls from the filter 48 to the furnace material 46, and the mixture when it is scattered by the baffle plate 50. It has been adopted.

Regarding heat retention when breeding tropical fish, which are said to be sensitive to temperature changes, when heating, a stainless steel heat receiving plate 8 provided on the bottom plate 5 of the aquarium container 3 receives heat from the outside (the heating means will be described later). Heat is added to the tank water.

The heat receiving plate 8 is located within the circulation passage 14, and the circulation passage 1
4 flows from the circular circulation suction port 13 to the central inflow passage 17 in a radial direction linearly or in a spiral shape (when a swirling flow is formed by the water guide 37), so water flows in a part of the passage 14. Even if the water is heated, it is uniformly heated while flowing through the pump device 15 that collects the water and the discharge pipe 28, and when it is supplied to the ice fish section 58, the temperature is completely distributed.

Therefore, the temperature gradient allows the fish to be heated without affecting them.

On the other hand, temperature control sensor heat transfer plate 9 for keeping water temperature constant
It is controlled by a temperature sensor, which will be described later.

Illumination by a fluorescent lamp 56 is provided by a moisture-proof cover 57. Water surface H,
The aquatic plants 30 and fish F are illuminated by the transmission and reflection from the inner cylinder 27 and the peripheral wall 6 of the aquarium container 30, which are made of transparent materials, and can be viewed more brightly than the outside of the aquarium section 1.

The light heat of the lamp is radiated through the air circulation holes 54 of the lid 4.

Next, the mounting table 2 will be explained.

As shown in FIGS. 3 and 4, a positioning lip 59 which has a hollow cylindrical shape and has a height lower than the diameter of the mounting table 2 is fitted to the periphery of the upper surface and inside the lower end of the peripheral wall 6 of the water tank 1. are formed, and holes 61 to 64 are formed in the upper plate 60 of the mounting table 2 corresponding to the non-magnetic plate T of the bottom plate 5 of the aquarium container 3, the stainless steel heat receiving plate 8, and the sensor heat transfer plate 9. .

The hole 61 is provided with a drive device 65, the hole 62 is provided with a heater device 66, the hole 63 is provided with a fluorescent lamp ballast 67, and the hole 64 is provided with a temperature sensor 68.

First, the drive device 65 includes a motor 69 and a drive-side permanent magnet 71 that is attached to the motor shaft 70 and rotates, as shown in FIG.
The upper part of the permanent magnet 71 is a thin driving head 7.
It is waterproof coated with 1a.

The drive end 71a of the drive device 65 is located above the hole 61 on the plate 60.
The driving device 65 is exposed to the outside and as shown in FIG. .

In the heater device 66, a positive temperature characteristic heater is waterproof covered with a heater head 66a that is electrically insulating and has a low thermal resistance, the whole is suspended from the upper plate 60 by a tension spring 73, positioned by a projection 66b, and the head 66a is inserted through the hole 62. I'm floating.

Similarly, the stabilizer 67 is covered with a waterproof coating by the head 74 and floats from the hole 63.

The ballast 67 is used as an auxiliary heating source for the aquarium section 1.

Furthermore, the temperature sensor 68 has a heat insulating material 76 lined on the inner surface of the sensor housing 75 as shown in FIG.
The sensor housing 75 is suspended by the tension spring 79, positioned by the protrusion 75a, and the sensor heel 77 is
is floating from the hole 64.

As shown in FIG. 3, a drain hole 80 is formed in the top plate 60, and the drain hole 80 passes through the bottom plate 82 with the upper end of a guide surface 81 connected to it as shown in FIGS. 15 and 16.

As shown in FIG. 3, a protruding part 83 is provided on one side of the mounting table 2, a recessed part 84 is formed on the upper surface of the protruding part 83, and a receiving blade 85 for an outlet or the like is embedded in the bottom surface of the recessed part 84.

The lower end of the illumination support column 86 is fitted into the recess 84 and erected therein.

The lighting support 86 is inserted into the lower end surface and has a plug blade 87 such as a plug.
is provided, and when it is fitted to the support 86, the plug blade 87 is connected to the receiving blade 8.
5 for electrical connection.

A cord 88 passes through the support 86 and is connected to a socket 89 of the fluorescent lamp 56 of the lid 4 from the upper end as shown in Figure 4.

Further, the upper end of the support column 86 is connected to the hinge 53 of the lid body 4, so that the cover body 4 is rotatably supported by the support column 86.

As shown in FIG. 3, a notch 90 for cleaning is formed on the upper side of the mounting table 2 for separating the water tank.

A hole is formed in the side surface of the mounting table 2 as shown in FIGS. 3 and 4, and a cord pusher 91 is attached to the hole, and a power cord 9 is inserted into the hole.
2 is inserted.

Further, a heater switch 93 and a lamp switch 94 are attached to the side surface.

Further, as shown in FIG. 4, a limit switch 95 is disposed below the heater device 66 within the range in which the heater device 66 moves.

Note that 96 is a leg of the mounting table 2, 97 is an air circulation hole, and 98 is an electric block.

A circuit diagram of the electrical wiring for this water tank is shown in FIG.

That is, a lighting circuit C1 including a firefly lamp 56, a glow lamp 99, a noise prevention capacitor 100, a ballast 67, and a lamp switch 94; a control circuit 101 that operates under control of the heater of the heater device 66 and the temperature sensor 68; A heater circuit C2 including a heater operation notification lamp (using a pilot lamp) 102 and a heater switch 93, and a motor circuit C3 of the motor 69 are each connected to a power source E (power cord 92).

In addition to the power cord 92, a power-on notification lamp (using a pilot rung) 103 is connected in parallel with one circuit C1.
A limit switch 95 is connected between ~C3 and the power supply side.

With this circuit configuration, when the water tank part 1 is placed on the mounting table 2, the henode 66a floating from the upper plate 60 of the mounting table 2 is attached to the non-magnetic plate 7, the heat receiving plate 8, and the sensor heat plate 9 of the bottom plate 5.
, 71a, 74, and 77 are in elastic contact with each other, and the permanent magnets 25 and 71 are magnetically coupled to each other on the nonmagnetic plate 7, and the heat receiving plate 8
The heat exchanger plate 9 and the hemlocks 66a, 74, and T7 are thermally coupled.

At the same time, the heater device 66 is pushed down by the heat receiving plate 8 and moves downward, turning on the rimming switch 95. As a result, when the power cord 92 is connected to the power source, the motor circuit C3
is closed, the motor 69 is driven, the permanent magnet 71 rotates, and the permanent magnet 25 of the water tank section 1, which is magnetically coupled thereto, is driven, and the impeller 24 is rotated to operate the pump.

Next, when the lamp switch 94 is turned on, the fluorescent lamp 56 lights up.

At the same time, the stabilizer 67 generates heat, heats its head 74, and transfers the heat to the heat receiving plate 8, thereby supplementarily heating the water flowing through the circulation passage 14.

Also, when the heater switch 93 is turned on, the heater 66
generates heat and heats the head 66a, which is a heat transfer plate.
The heat is transferred to heat the water flowing through the circulation passage 14.

Since the heater has positive temperature characteristics, overheating is self-controlled.

On the other hand, the temperature of the water flowing through the circulation passage 14 is transmitted to the sensor heat transfer plate 9 and then to the sensor head TI, and this temperature is detected by the temperature sensor brocade.

In this case, since the sensor head 77, the heater head 66a, and the head 74 are located in a direction perpendicular to the direction of water flow in the passage 14, the heated water is not immediately detected, and the water temperature in the ice fish section 58 is always maintained by the circulation path. has been detected.

Note that FIGS. 15 and 18 show modified examples of the arrangement of the heater device 66 and the temperature sensor 68. Both are arranged at symmetrical positions with the drive device 65 at the center, and the heat of the ballast 67 is transferred to the water. However, even in this arrangement, the water temperature in the ice fish section 58 is always detected by the sensor 68 because the water flows concentrated in the central part of the drive device 65.

Further, due to this circuit configuration, the limit switch 5 is not turned on unless the water tank 1 is positioned and placed on the mounting table 2.

The features of this tank are explained below.

That is, (1) by using a magnetic coupling, the water tank part 1 containing the pump device 15 and the mounting table 2 containing the drive device 65 of the pump device 15 are completely separated with respect to water, and the water tank part 1 and the mounting table 2 are separated. Since it is made detachable, the problem of electric shock due to leakage is solved, and there is no need to consider electrical parts when changing water or cleaning the aquarium 1, making it safe and easy to operate.

In particular, by providing a cutout recess 90 in the mounting table 2 and supporting the bottom of the aquarium container 3 by inserting a hand into the cutout recess 90, the aquarium container 3 can be easily detached and separated, and the appearance is also superior to that in the case where a handle protrudes from the aquarium container 3. ing.

Furthermore, by providing a positioning lip 59 on the upper periphery of the mounting table 2 that fits inside the lower end of the peripheral wall 6 of the aquarium section 10, drops traveling along the outer surface of the aquarium container 3 are prevented from entering the upper surface of the mounting table 2. can.

By providing the drain hole 80 on the top surface of the mounting table 2, water spilled on the top surface can be safely removed.

(2) Since the inner cylinder 27 is provided inside the aquarium container 3 to form the ice fish section 58, and the door tank 38 and the pump device 15 are provided above and below the inner cylinder 27, respectively, fish can also be collected from the outside of the aquarium 1 from above. It is possible to expand the viewing range and improve the aesthetic appearance.

Since the upper part of the container 3 is open, it is easy to administer food, and since water is circulated within the aquarium 1, there is no splashing of water to the outside and it is difficult for water to splash on the container.

In particular, a partition 10 is provided at the bottom of the aquarium container 3, and this forms a narrow circulation suction port 13 and a circulation passage 14, so that the flow velocity passing through this part is high, and dirt, feces, etc. are reliably transferred to the overflow tank 38. Can be transported.

Further, the heating of the water through the heat receiving plate 8 can be quickly transmitted throughout the tank.

Note that the aquarium container and the inner cylinder may be square cylinders.

(3) By providing the circulation suction port 13 at the bottom, which serves as an outlet for passing the tank water of the water fish section 58, the ice fish section 58
It is possible to reliably transport garbage that has sunk to the bottom of the water.

This is particularly effective because the upper surface of the partition 810 is tapered toward the circulation suction port 13.

This reduces the amount of dirt adhering to the walls and reduces the number of water changes.

Furthermore, the design can be changed so that the water flow can be easily guided to the circulation passage 14 by directing the suction port 13 toward the tapered surface of the partition 10 as shown in FIG.

Also, if you do this, the fish will be attracted to the circulation suction port 13 due to their habit.
This makes it difficult for people to get close to the body, which prevents people from getting sucked into it and dying in an accident.

As shown in FIGS. 20 and 21, the suction port 13 also has radial grooves 13' (width approximately 1 to 2 m
m, length of approximately 5 to 15 mm) to facilitate the movement of solid matter such as feces and leftover feed.

(4) Since the baffle plate 50 is detachably provided at the upper end of the discharge pipe 28, the water discharged from the discharge pipe 28 is transferred to the baffle plate 50.
It collides with 0, flies in all directions, and falls onto the filtration tank.

At this time, the water is sprinkled, which has the effect of absorbing oxygen from the board and also has a visual effect.

In particular, when the surface of the baffle plate 50 that the water collides with has an uneven shape, the visual effect becomes remarkable.

(5) A stainless steel sensor heat plate 9 is formed on the bottom plate 5 of the aquarium container 3, and a sensor head 77 with good heat transfer is formed on the outer surface of the sensor heat plate 9.
14 elements 7 through which sensor elements 78 are arranged.
Since the periphery of the aquarium 8 is covered with a heat insulating material 76, only the water temperature in the aquarium container 3 can be detected, and even a drop in the water level can be detected.

Therefore, compared to the case where the sensor is placed underwater, there is no need to consider waterproofness, the beauty of the ice fish area is not spoiled, and the reliability of the seven sensors is improved.

Note that the heat transfer plate 9 does not need to be made of a metal material, and a part of the resin bottom plate 5 may be made as thin as possible to improve thermal efficiency.

(6) Since the air mixing inlet 40a is formed in the guide cylinder 42 by the air introduction pipe 4, air bubbles are mixed in when water enters the inner cylinder 27, and there is a visual effect due to the intake of dissolved oxygen and the movement of the air bubbles.

(7) By providing the water guide 37 on the outlet side (ice fish part side) of the overflow notch 31 that communicates the inner cylinder 2γ with aquatic plants and the water fish part 58, a swirling flow can be formed in the ice fish part, and a countercurrent flow of fish. It is possible to create an environment that is in line with people's habits.

In particular, if the lever 36 is used to change the direction of the swirling flow or to create a run pattern such as a state where there is no swirling flow, the swimming of the fish can be controlled arbitrarily.

(8) Since the neck-shaped fluorescent lamp 56 suspended from the lid body 4 is disposed above the ice fish section 58, the aquatic fish section 58 and the aquatic plants 30 are efficiently illuminated through the water surface H.

In this case, since the furnace tank 38 is located in the center of the fluorescent lamp 56, space can be used effectively and compactness can be achieved.

(9) A circulation suction port 13 is provided at the bottom of the ice fish section 58, and the pump device 15 pumps the waste water from the ice fish section 58 into the filter tank 3 in the upper part.
8, so dirt, etc. can be quickly collected and filtered.

In particular, since the filter tank 38 is supported by the inner cylinder, the discharge pipe 28
This allows for even faster F-passing.

The aquatic plants 30 inside the inner cylinder 27 can be made to appear larger due to the lens effect of the transparent cylinder, thereby increasing their value as interior goods.

(10) Aquatic plants are provided in the inner cylinder 27 to separate it from the ice fish part 58, and the circulating water is communicated from the inner cylinder 27 to the water fish part 58 with one overbuff mouth, so that dead leaves, cut branches, etc. of the water leather 30 can be removed from the ice fish part 58. It is retained within the inner cylinder 27 without invading the inner cylinder 27.

Therefore, they will not invade the pump device 15, the circulation suction port 13, or the circulation passage 14 and cause clogging or non-operation of the pump.

Further, the ice fish section 58 is less contaminated and the garbage collection efficiency is also good.

Furthermore, since the fresh water filtered through the biological furnace in the furnace filtration tank 38 is supplied to the aquatic plants 30, nutrients such as nitrogen compounds become fertilizer for the aquatic plants 30, thereby suppressing abnormal growth of phytoplankton.

Moreover, dissolved oxygen is absorbed by the icefish part 5 due to the carbon dioxide assimilation effect of aquatic plants 30.
8.

Since the inner cylinder 27 can be attached to and detached from the partition stand 10,
The water reeds 30 are also easy to care for.

As shown in FIG. 22, a communication hole (small diameter) 105 is formed at the bottom of the inner cylinder 27 to lead to the ice fish part 58, and water rich in nutrients is guided to the roots of the aquatic plants 30 to provide nutrients to the roots. It can be designed to give

By going through the water circulation process as shown in FIG. 13, water purification and oxygen supply can be efficiently achieved.

Since the physical p-filtration and the biological p-filtration in the F filtration tank 38 are separated, and the physical p-filtration is carried out first, there is less clogging of the biological reactor filtration with dirt and the like.

At the same time, it is possible to take in oxygen while the water is falling into the biological reactor.

Since the door filter tank 38 is placed on the upper end of the inner cylinder 27, it can be removed and cleaned easily.

Since water is evenly distributed to the baffle plate 50 in the baffle tank 38, the buffing is carried out evenly.

The heads 66a, 71a, 74, and 77 are floating above the upper surface of the mounting table 2, and when the water tank section 1 is placed thereon, they are securely brought into close contact with the bottom plate 5 thereof.

Therefore, magnetic coupling and heat transfer are ensured.

Therefore, on the contrary, precision is not required for the connection between the water tank part 1 and the mounting table 2.

The aquarium container 3 is made of a transparent material such as acrylic resin that has good thermal conductivity, and its bottom plate 5 has a heat receiving plate 8 made of stainless steel that has good thermal conductivity.
, 9 are thinned and come into close contact with the heads 66a, 74,
Good accuracy in heating and detecting water temperature.

Also, since it is located in a position that is difficult to see from the outside, it does not spoil the appearance.

(14) The upper surface of the stainless steel heat-receiving plate 8 is covered with a partition stand 10, which prevents fish from coming to the upper surface of the heat-receiving plate 8, thereby protecting the fish.

Moreover, cleaning can be easily performed by removing the partition stand 10.

(15) Since the stabilizer 67 is used as an auxiliary water temperature heating source, heat is effectively utilized.

Therefore, a heat dissipation space for the ballast 67 is not required.

(16) The power cord 92 is inserted into the mounting table 2, the receiving blade 85 for an outlet etc. is provided on the mounting table 2, and the lighting support 8
A current is supplied to the lamp 56 of the lid body 4 via the lamp 6 .

Therefore, the external wiring is simple and does not get in the way, improving the aesthetic appearance.

Note that even if only the outlet 85' is provided and the lamp cord is pulled out to the lid body 4 and connected as shown in FIG.
This is simpler than connecting the cord directly from the power source to the lid.

A second embodiment of the invention is shown in FIGS. 23 to 26.

This water tank differs from the first embodiment in the following points.

That is, holes 106 are formed in the heat transfer part and magnetic coupling part of the bottom plate 5 of the aquarium container 3, and hooks 107 are formed in the peripheral edges of the non-magnetic plate 7, the heat receiving plate 8, and the sensor heat transfer plate 90, respectively. It is hooked to the edge, with an O-ring 108 interposed therebetween.

The inner cylinder 27 and the partition stand 10 are integrally formed to reduce the number of parts.

Fish intrusion prevention blocks 1 and 9, such as pebbles, are installed between the periphery of the partition stand 100 and the inner bottom of the aquarium container 3.

A pump device 15' is mounted from the bottom of the inner cylinder 27 to the bottom of the partition stand 10.

In the pump device 15', a vertical shaft 23 is supported at its intermediate portion by a bearing 21', an impeller 24 is provided at the upper end, and a driven permanent magnet 25 is attached at the lower end.

A protrusion 110 is provided at the center of the lower end surface (rotation center) of the permanent magnet 25 to allow the non-magnetic plate to support the thrust load.

A filter tank 38' is installed inside the inner cylinder 27.

The slurry tank 38' has a cylindrical outer diameter smaller than the inner diameter of the inner cylinder 27, and its lower end is attached to the pump casing 16.

Further, the filtration tank 38' is integrally formed with the discharge pipe 28.
8 communicates with the outflow passage 18 of the pump device 15'.

The overflow tank 38' has a bottom above the pump device 15',
A drain port 11 is formed in the side wall near the drain port 11 and communicates with a gap 112 inside the inner cylinder 27 .

A dust guard 113 is detachably attached to the upper opening of the filter tank 3.

The waste bin 113 is shaped like a closed container and has a communication port 114 communicating with the upper end opening of the discharge pipe 28 and a screen (filter) 115 that covers the upper end opening of the waste tank 38'.

A transparent inner lid 116 that closes the upper opening of the aquarium container 3 is removably attached, and a handle 116a is attached to the central portion that covers the dust cover 113.

A stabilizer 67 is attached to the center of the lid body 4 containing the lamp 56.

In the water tank section 1, the circulation path passes through the pump device 15' discharge pipe 28, the net 115, the drainage tank 38', and the discharge port 111 of the filtration tank 38', and then passes through the gap 112 of the inner cylinder 27, and the inner cylinder 2.
The ice fish section 58 passes through the overflow notch 31 of No. 7, and the circulation passage 14 and the pump device 15' pass through the fish intrusion prevention block 109 of the circulation suction port 13.

In the mounting table 2, a motor cooling fan 117 is attached below the drive-side permanent magnet 71 of the drive device 65.

Further, a receiver 118 is formed for the heater device 66 and the temperature sensor 68, and a recess 119 is formed outside the upper end opening of the receiver 118.

On the other hand, a protrusion 120 is formed on the heater device 66 and the temperature sensor 68 to fit into the recess 119 and to be able to slide up and down within the recess 119. A compression coil spring 121 is interposed between them, and is biased upward within the range defined by the recess 119, so that each head 66a, 77 is attached to the upper plate 6.
It is biased from 0.

Limit switch 95 is mounted between the bottom of temperature sensor 68 and the bottom of its receptacle 118.

As described above, in the aquarium of the present invention, a heat receiving plate is provided at the bottom of the aquarium portion, and a heater is provided on the mounting table to heat the heat receiving plate while it is placed, making it easier to raise tropical fish.
In addition, the heater can be completely waterproof with respect to water, and it is easy to change the water and clean the water tank, it is electrically safe, and the appearance is improved.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the first embodiment of the invention, FIG. 2 is a perspective view of the first embodiment with the lid open, and FIG. 3 is an exploded perspective view of FIG. 1.
Fig. 4 is a sectional view of Fig. 1, Fig. 5 is an enlarged sectional view of the pump device, Fig. 6 is an enlarged sectional view of the filtration tank, Fig. 7 is a sectional view taken along the line ■-■, and Fig. 8 is an enlarged sectional view of the pump device. FIG. 9 is a perspective view of the swirling flow generator, FIG. 10 is a schematic diagram showing its operating state, FIG. 11 is an exploded perspective view of the door tank, and FIG. 12 is an exploded perspective view of the baffle plate. A perspective view, FIG. 13 is a block diagram showing a water circulation process, FIG. 14 is a sectional view of a temperature sensor, and FIG. 15 is a plan view of a mounting table which is a modified example only regarding the arrangement of the temperature sensor and heater device. Fig. 16 is a sectional view taken along the line XVI-XVI, Fig. 17 is an electric circuit diagram, Fig. 18 is a perspective view of a modification of the mounting table, Fig. 19 is a partial sectional view showing the circulation suction port of the water tank, FIG. 20 is a partial cross-sectional view of another modification of the circulation suction port, FIG. 21 is a vertical cross-section thereof, FIG. 22 is a partial cross-section of a modification of the inner cylinder, and FIG. 23 is a second embodiment of the invention. 24 is a side view thereof, FIG. 25'9 is an exploded perspective view thereof, and FIG. 26 is an enlarged sectional view of FIG. 23. 1...Aquarium section, 2...Placement stand, 3...
・・・Aquarium container, 4... Ritual body, 8...
Heat receiving plate, 10...Inner partition stand, 56...
Fluorescent lamp, 59... Rib, 66a...
・Heater hend, 66...Motor device, 67...
...Ballast, 72,73...Spring, 80.
... Drain hole, 85 ... Receiving blade (outlet), 86 ... Support column, 90 ... Maintenance recess.

Claims (1)

[Claims] 1. A water tank having a heat-receiving plate on the bottom, a mounting table on which the water tank is removably placed, and a head provided on the mounting table and in contact with the heat-receiving plate. Aquarium equipped with a heater. 2. The water tank according to claim 1, wherein the water tank portion is formed of a transparent thermally poor conductor, and the heat receiving plate is formed of a thermally good conductor. 3. The aquarium according to claim 1 or 2, wherein the heater head is floated on the upper surface of the mounting table and comes into elastic contact with the heat receiving plate. 4. The aquarium according to claim 1, wherein the holder has an upwardly directed annular rib formed on the outer peripheral edge of the upper portion to prevent water from entering from the circumferential surface of the aquarium portion. 5. The aquarium according to claim 1, wherein the stand has four handle parts formed at mutually opposite positions on the outer surface to make it easier to lift the aquarium part. 6. The aquarium according to claim 1, wherein the mounting stand has a drain hole formed on the upper surface.