Animal husbandry – Entomological culture device – Egg treatment – production – or storage
Patent
1977-05-16
1979-05-01
Chamblee, Hugh R.
Animal husbandry
Entomological culture device
Egg treatment, production, or storage
A01K 6300
Patent
active
041518101
ABSTRACT:
An aquarium tank is provided with a hood formed with a filter compartment. A pump circulates water from the tank through the filter compartment and back into the tank for purification and aeration. A heat exchanger tube is provided in the filter compartment and is selectively connected to a heating unit or a cooling unit to circulate hot or cold fluid through the heat exchanger tube and heat or cool the water being circulated through the filter compartment. A water temperature sensor and a thermostat control valves at the heating and cooling units so as to maintain the water in the tank at any predetermined temperature. The large effective heat transfer area of the heat exchanger tube allows effective tank water regulation with only a small temperature differential between the water and the filter compartment and the water in the tank to eliminate temperature gradients in the tank which may be harmful to certain species of marine life.
REFERENCES:
patent: 2594474 (1952-04-01), McGrath
patent: 3149608 (1964-09-01), Murphy
patent: 3418973 (1968-12-01), Saito
patent: 3892199 (1975-07-01), Huyler
patent: 3914994 (1975-10-01), Banner
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