JPH0534856U - Aquarium device for live fish - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an aquarium device for live fish capable of maintaining a sufficient amount of dissolved oxygen in water. [Structure] A water tank 21 for accommodating live fish and a water circulation system 22 for circulating the water in the water tank 21 are provided.
And a bottomed cylindrical aeration tank 25 having an inflow port 23 and an outflow port 24 and an upper surface open to the atmosphere.
Is attached and the air is exploded in the aeration tank 25.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is provided in a large fishing boat, a truck, or other transport vehicle to cool the water in the aquarium to a desired temperature and maintain the freshness of the fish until it is transported to the destination. With regard to the aquarium device for live fish, it is intended to obtain a sufficient amount of dissolved oxygen especially in the case of explosion (aeration).

[0002]

[Prior Art]

 When fishing with a large fishing boat, the fish caught is temporarily stored in the tank of the live fish container provided on the boat and transported to the destination such as a landing site, but the freshness of the fish is maintained. In order to do so, it is necessary to cool the temperature of the seawater in the aquarium to a temperature equal to the temperature of the seawater in which the fish lived, so such live fish containers are equipped with aquarium devices.

For example, Japanese Patent Application No. 3-7622 filed by the applicant of the present application discloses, as a seawater cooling device for a small fishing boat, an evaporator that constitutes a refrigeration cycle while sucking and circulating seawater in a water tank. An aquarium device for cooling is disclosed. As shown in FIG. 3, this aquarium device for live fish containers includes a seawater circulation system 4 in which the seawater in the aquarium 1 circulates, a coolant circulation system 9 in which a coolant such as flue gas circulates, and a coolant in this coolant circulation system 9. It has a cooling water circulation system 11 for cooling. The seawater circulation system 4 is a closed circuit in which the seawater in the water tank 1 is sucked by the pump 2, guided to the evaporator 3 of the refrigerant circulation system 9 for heat exchange, and then returned to the water tank 1. The refrigerant circulation system 9 is a closed circuit whose main components are the compressor 5, the condenser 6, the liquid tank 7, the expansion valve 8 and the evaporator 3, and changes in the refrigerant state in the refrigerant circulation system 9 and the cooling operation of seawater. Use is performed as follows. That is, the refrigerant sucked into the compressor 5 in the state of superheated vapor is adiabatically compressed by the compressor 5 and becomes a high-temperature and high-pressure gaseous refrigerant, which is guided to the condenser 6, where heat is released to the outside and a medium-temperature and high-pressure liquid state. It becomes a refrigerant. Then, this liquid refrigerant is adiabatically expanded by passing through the expansion valve 8 to become a gas-liquid mixed refrigerant, and then guided to the evaporator 3 to perform the heat exchange with the seawater described above, and is vaporized while being isobaric. Then, it becomes superheated steam and is sucked into the compressor 5 again. On the other hand, the cooling water is sucked into the condenser 6 of the refrigerant circulation system 9 by the pump 10, and controls the cooling operation of the refrigerant described above.

[0004]

[Problems to be solved by the device]

 By the way, in order to maintain the freshness of caught fish, air is blown into the aquarium, that is, explosive air (aeration) is performed, but conventional air supply is performed from the air source 12 to the air pipe 13 as shown in FIG. Air was blown directly into the water tank 1 through the.

However, in the live fish container, since the depth is not sufficient, the exploded air floats on the surface of the water before it is dissolved in the water and is released into the atmosphere without being absorbed in the water. Since the amount of oxygen effective for breathing live fish is the amount of dissolved oxygen in water, the air released into the atmosphere ends up being wasted. In addition, when accommodating squid, there is a problem that explosive air enters the mantle and shortens the life of the squid. Even with other live fish, the explosive air attaches to the surface of the gills and breathes. It can also cause disability.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide an aquarium device for live fish capable of sufficiently maintaining the amount of dissolved oxygen in water.

[0007]

[Means for Solving the Problems]

 MEANS TO SOLVE THE PROBLEM This invention for achieving the said objective has the water tank (21) which stores live fish, and the water circulation system (22) which circulates the water in this water tank (21). , A bottomed cylindrical aeration tank (25) having an inlet (23) and an outlet (24) and an upper surface open to the atmosphere is attached, and air is exploded in the aeration tank (25). It is an aquarium device for live fish characterized by being concerned.

[0008]

[Action]

 In the present invention constructed as above, the water in the water tank (21) containing live fish is sucked by the water circulation system (22) and guided to the inlet (23) of the aeration tank (25) to explode. Dissolves the air that is breathed. The water in which oxygen is dissolved is returned to the water tank (21) from the outlet (24) by the water circulation system (22). In this way, since the air is detonated in the aeration tank attached to the water circulation system separately from the water tank, air bubbles do not directly adhere to the live fish and the life of the live fish is not adversely affected. In addition, it is easy to control the increase / decrease in the dissolved oxygen content by blasting air in a small chamber such as the aeration tank.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view showing an embodiment of the present invention, and FIG. 2 is a perspective view showing an aeration tank according to the embodiment.

As shown in FIG. 1, in the aquarium device for live fish of this embodiment, the water in the aquarium 1 is guided to a filter 26 to clean the water, and at the same time to a cooling / sterilizing device 27. It has a water circulation system 22 for cooling and sterilizing the water inside. In the water circulation system 22, the water in the water tank 1 is sucked by the pump 28 operated by the motor, passes through the filter 26, passes through the cooling / sterilizing device 27, and is then discharged into the water tank 1 again.

The filter 26 according to the present embodiment may be one that encloses activated carbon or nitrate for removing suspended substances for physical filtration, or one that encloses bacteria for ammonia decomposition and performs biological filtration. It is also possible to use these physical filtration and biological filtration together. In particular, when a filter for performing biological filtration is attached to the downstream side of the aeration tank 25, which will be described later, as in the present embodiment, water having a large dissolved oxygen amount can be supplied to the filter, so that the bacteria for ammonia decomposition can be supplied. It has the effect of promoting the decomposition action.

The cooling device of the cooling / sterilizing device 27 of this embodiment has, for example, a compressor, a condenser, an expansion valve, and an evaporator as main components, and a closed circuit is constituted by a refrigerant pipe to cool a low temperature flowing through the evaporator. The refrigerant takes heat from the water flowing in the water circulation system 22 to cool the water to a predetermined temperature. Here, the condenser removes heat from the high-temperature and high-pressure gaseous refrigerant and changes its state into a medium-temperature and high-pressure liquid refrigerant, and heat is exchanged by a cooling fan or the outside air. A liquid tank is installed on the downstream side of the condenser to store the liquid refrigerant, which is adjusted by the fluctuation of the heat load in the cooling cycle, to separate gas and liquid and foreign matter and water in the refrigerant, and to take out only the liquid refrigerant. May be. The expansion valve connected downstream of the liquid tank adiabatically expands the liquid refrigerant into a gas-liquid mixed refrigerant, and the evaporator inserts a titanium pipe inside the rubber hose and It is possible to configure such that the refrigerant circulates in the tank and the water in the water tank 1 circulates between the titanium pipe and the rubber hose. The state change of the refrigerant and the cooling action of the water in the water tank in the cooling device of the cooling / sterilizing device 27 thus configured are performed as follows. That is, first, the refrigerant sucked into the compressor in the state of superheated steam is heat-insulated and compressed by the compressor to become a high-temperature and high-pressure gaseous refrigerant, which is guided to the condenser, where heat is released and becomes a medium-temperature and high-pressure liquid refrigerant. .. Next, after passing through the expansion valve, this liquid refrigerant adiabatically expands to become a gas-liquid mixed refrigerant, then is guided to the evaporator and exchanges heat with the water in the water tank 1 and isobaric expansion while vaporizing. Then, it becomes superheated steam and is sucked into the compressor again. As the sterilizing device of the cooling / sterilizing device 27, a general sterilizing lamp is used.

On the other hand, an aeration tank 25 is attached to the water circulation system 22 of the live fish tank device of the present embodiment. In the embodiment shown in FIG. 1, it is mounted on the upstream side of the filter 26, but the present invention is not limited to this embodiment and may be mounted on the downstream side of the filter 26 or the downstream side of the cooling / sterilizing device 27. good. When the aeration tank 25 is installed downstream of the cooling / sterilizing device 27, the amount of oxygen dissolved is increased because the air is exploded in the cooled water.

As shown in FIG. 2, the aeration tank 25 is formed into a bottomed cylinder whose upper surface is open to the atmosphere, and after degassing the air inlet 23 into which the water flowing through the water circulation system 22 flows and the air. An outlet 24 for returning the water of the above to the water circulation system 22 is opened. The inflow port 23 is opened at a position higher than the outflow port 24 in the vertical direction, and the aeration tank 25 is installed at a position in which the inflow port 23 is slightly lower than the liquid level H of the water tank 1 in the vertical direction. Has been done. As a result, when the water in the water tank 1 flows into the water circulation system 22, the water level h of the aeration tank 25 becomes higher than the inflow port 23.

An air stone 29 for blowing air is provided in the aeration tank 25, and air is pumped from the air pump 30 to the air stone 29. The air stone 29 is preferably attached to the stagnation part of the water flow in the aeration tank 25 so that the explosive air does not flow out from the outflow port 24. Further, the air stone 29 is attached to the bottom part of the aeration tank to increase the solubility of air. It is preferable to provide it.

Next, the operation will be described. The water in the aquarium 1 containing live fish is sucked by the pump 28 and guided to the water circulation system 22, which is guided to the inlet 3 of the aeration tank 5. In the aeration tank 25, the air pumped from the air pump 30 explodes from the air stones and dissolves in the water introduced into the aeration tank. The water in which oxygen is dissolved is guided from the outlet 4 to the filter 26, and foreign matter in the water is removed. After that, the water is cooled to a predetermined temperature by the cooling / sterilizing device 27, the fungi in the water are sterilized, and the water is returned to the water tank 1.

As described above, since the air is detonated in the aeration tank attached to the water circulation system separately from the water tank, air bubbles do not directly adhere to the live fish, and the life of the live fish is not adversely affected. .. In addition, it is easy to control the increase / decrease in the amount of dissolved oxygen by blasting air in a small chamber such as the aeration tank.

[0018]

[Effect of the device]

 As described above, according to the present invention, it has an aquarium for storing live fish and a water circulation system for circulating water in the aquarium, and the water circulation system has an inlet and an outlet. By attaching a cylindrical aeration tank with a bottom open to the atmosphere and exploding air in this air tank, air bubbles do not directly adhere to live fish, which adversely affects the life of live fish. Never give. In addition, it is easy to control the increase / decrease in the dissolved oxygen amount by blasting air in a small chamber such as this air tank.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an aeration tank according to the embodiment.

FIG. 3 is a schematic view showing a conventional live fish tank device.

[Explanation of symbols]

21 ... Water tank, 22 ... Water circulation system, 23 ... Inflow port, 24 ... Outflow port, 25 ... Aeration tank.

Claims (1)

[Scope of utility model registration request] 1. A water tank (21) for containing live fish, and a water circulation system (22) for circulating water in the water tank (21),
The water circulation system (22) has an inlet (23) and an outlet (2).
4) is formed, and a bottomed cylindrical aeration tank (25) whose upper surface is open to the atmosphere is attached, and air is exploded in the aeration tank (25).