JPH1011155A - Water temperature stabilizing device for water tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold the water temperature of the water tank constant by cooling or heating by mounting fins, which are dipped in the water in the water tank, on one surface of a Peltier element and a plate type heat conduction body for stabilization on the other surface, and switching the direction of electric feeding according to the temperature detected by a temperature sensor. SOLUTION: The fins 5 mounted on one surface of the Peltier element 4 are dipped in the water 2 in the water tank 1, the plate type heat conduction body 7 for stabilization is mounted on the other surface, and a DC voltage is fed to the element 4. The temperature sensor 3 detects the water temperature of the water tank 1 and when the detected temperature is higher than specific high temperature, the voltage is applied forward to the element 4 to cool the fins 5 and then heat the stabilizing heat conduction body 7, so that heat is absorbed by a liquid stabilizer 10 fed to the stabilizing heat conduction body 7. When the detected temperature is lower than specific low temperature, the element 4 is fed reversely to heat the fins 5 and the stabilizing heat conduction body 7 is cooled, so that the water is heated with the liquid stabilizer 10. Consequently, the cooling/heat radiation effect of the fins 5 is improved and the water 2 in the water tank 1 is cooled or heated in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water tank water temperature stabilizing device for adjusting the water temperature of a water tank to a constant temperature.

[0002]

2. Description of the Related Art In a conventional water temperature stabilizing device for a water tank, when cooling the water in the water tank, the water tank and the water cooling device are separately provided, and the water in the water tank is sent to the water cooling device by a pump to cool the water. It is refluxed to the water tank. In the case of a tropical fish tank, a heater is immersed in the tank to heat the water in the tank.

[0003]

In the case of the above-mentioned conventional apparatus, there is a problem that only one of cooling and heating functions. An object of the present invention is to provide a water temperature stabilizing device for a water tank that keeps the water temperature of the water tank constant while keeping the above points in mind.

[0004]

In order to solve the above-mentioned problems, a water temperature stabilizing device for a water tank according to the present invention is provided on one surface of a Peltier element and a fin immersed in water of the water tank and another surface of the element. A plate-shaped stabilizing heat transfer member, a power supply device for supplying a DC voltage to the element, a temperature sensor for detecting a water temperature of the water tank, and circulating a stabilizing liquid in a tank to the stabilizing heat transfer member. A circulating pump for supplying liquid via a hose, and a switcher for supplying electricity to the element in a direction opposite to a direction for supplying electricity to the element when a temperature detected by the sensor is higher than a predetermined high temperature. It is provided with.

Accordingly, when the temperature detected by the sensor is equal to or higher than a predetermined high temperature, the element is energized positively, the fins are cooled, the stabilizing heat transfer body is heated, and liquid is supplied to the stabilizing heat transfer body. The heat of the stabilizing heat transfer body is absorbed by the low-temperature stabilizing liquid, the heat dissipation effect of the stabilizing heat transfer body is improved, the cooling effect of the fins is improved, and the water in the water tank is cooled in a short time.

When the temperature detected by the sensor is equal to or lower than a predetermined low temperature, reverse current is applied to the element, and the fin is heated,
The stabilizing heat transfer element is cooled, the stabilizing heat transfer element is heated by the high-temperature stabilizing liquid supplied to the stabilizing heat transfer element, the radiating effect of the fins is improved, and the water in the water tank is heated in a short time. You.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described with reference to FIG. 1 showing a perspective view of a main part, FIG. 2 showing an overall plan view, and FIG. 3 showing a circuit diagram of FIG. In these figures, 1 is an aquarium, 2
Denotes a water stored in a water tank 1, 3 is immersed in water 2, a temperature sensor for detecting water temperature, 4 is a plurality of Peltier elements arranged in parallel, 5 is mounted on the lower surface of each element 4, and The immersed fins, 6 are heat insulating packings provided around each element 4, and 7 is a plate-shaped stabilizing heat transfer member mounted on the upper surface of each element 4, and circulated in the stabilizing heat transfer member 7. The path 8 is formed in a meandering manner.

Reference numeral 9 denotes a tank in which a stabilizing liquid 10 is stored;
Is a circulation pump for the tank 9, and 12 is a circulation hose composed of a liquid supply hose 13 and a drainage hose 14. The liquid supply hose 13 connects the liquid supply port of the pump 11 to one end of the circulation path 8. The other end of the circulation path 8 and the drain port of the pump 11 are connected by a drain hose 14.

Reference numeral 15 denotes a transformer having a primary winding connected to an AC power supply, and reference numeral 16 denotes a rectifier circuit having both input terminals connected to the secondary winding of the transformer 15. Rectify. Reference numeral 17 denotes a capacitor connected to the positive and negative output terminals of the rectifier circuit 16 for smoothing the rectified voltage to a DC voltage. Reference numeral 18 denotes a power supply device including a transformer 15, a rectifier circuit 16, and a capacitor 17.

Reference numeral 19 denotes a common terminal connected to both ends of the capacitor 17, reference numeral 20 denotes a switching piece connected to both common terminals 19, and reference numeral 21 denotes a positive terminal located at both ends of each element 4, respectively. Terminals 22 are reverse terminals arranged side by side with both positive terminals 21, the upper reverse terminal 22 is connected to the lower positive terminal 21, the lower reverse terminal 22 is connected to the upper positive terminal 21, Both switching pieces 20 are both positive terminals 21
The contact is switched to the opposite terminals 22, and the DC voltage from the power supply 18 is supplied to each element 4. 23 is each terminal 1
This is a switching device including 9, 21, 22 and a switching piece 20.

When the temperature detected by the temperature sensor 3 immersed in the water 2 in the water tank 1 is equal to or higher than a predetermined high temperature in the case of a high temperature in summer or the like, both switching pieces 20 are connected to both positive terminals 21;
Positive current is supplied to each element 4 from the power supply 18 and the fin 5
Is cooled and absorbs heat, and the heat is radiated from the stabilizing heat transfer body 7 to cool the water 2 in the water tank 1.

At this time, the low-temperature stabilizer 10 in the tank 9 is circulated to the stabilizing heat transfer member 7 through the circulation hose 12 and the circulation passage 8 by the circulation pump 11, and the heat of the stabilizing heat transfer member 7 is removed. Heat is absorbed, the heat radiation effect is improved, the cooling effect of the fins 5 is improved, and the water 2 in the water tank 1 is cooled in a short time. And
When the temperature detected by the sensor 3 reaches a predetermined temperature, the power supply 1
The positive energization of the element 4 stops, and the cooling of the fins 5 stops.

Next, when the temperature detected by the sensor 3 is lower than a predetermined low temperature in a low temperature such as in winter, the switching piece 20 of the switch 23 is switched from the normal terminal 21 to the reverse terminal 22 and each element 4 Reverse energization is performed, the fins 5 are heated, the stabilizing heat transfer body 7 is cooled, and the water 2 in the water tank 1 is heated.

At this time, the high-temperature stabilizing liquid 10 is supplied to the stabilizing heat transfer body 7 by the circulation pump 11, and the stabilizing liquid 10 heats the stabilizing heat transfer body 7, so that the radiating effect of the fins 5 is improved. The water 2 in the water tank 1 is heated in a short time. And
When the temperature detected by the sensor 3 reaches a predetermined temperature, the reverse energization stops, and the heating of the fins 5 stops.

[0015]

Since the present invention is configured as described above, it has the following effects. In the water temperature stabilizing device for a water tank of the present invention, a fin 5 mounted on one surface of a Peltier element 4 is immersed in water 2 of a water tank 1, and a plate-shaped stabilizing heat transfer body 7 is mounted on the other surface of the element 4. Element 4 from power supply 18
Is supplied with a DC voltage, the temperature sensor 3 detects the temperature of the water in the water tank 1, and the circulation pump 11 supplies the stabilizing liquid 10 in the tank 9 to the stabilizing heat transfer member 7 through the circulating hose 12, thereby switching. The current is supplied to the element 4 when the temperature detected by the sensor 3 is equal to or higher than the predetermined high temperature by the heater 23, and the current is applied in the opposite direction when the temperature is equal to or lower than the predetermined low temperature. When the temperature is equal to or higher than the predetermined high temperature, the element 4 is energized positively to cool the fins 5, heat the stabilizing heat transfer body 7, and supply the low-temperature stabilizing liquid 10 supplied to the stabilizing heat transfer body 7.
By absorbing the heat of the heat transfer body 7 for stabilization, the heat dissipation effect of the heat transfer body 7 for stabilization can be improved, the cooling effect of the fins 5 can be improved, and the water 2 in the water tank 1 can be shortened. Can be cooled in time.

When the temperature detected by the sensor 3 is equal to or lower than a predetermined low temperature, the element 4 is reversely energized to heat the fins 5, thereby cooling the stabilizing heat conductor 7, and The stabilizing heat transfer body 7 is heated by the supplied high-temperature stabilizing liquid 10,
The heat radiation effect of the fins 5 can be improved, and the water 2 in the water tank 1 can be heated in a short time.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of one embodiment of the present invention.

FIG. 2 is an overall plan view of one embodiment of the present invention.

FIG. 3 is a circuit diagram of FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 water tank 2 water 3 temperature sensor 4 Peltier element 5 fin 7 stabilizing heat transfer body 9 tank 10 stabilizing liquid 11 circulation pump 12 circulation hose 18 power supply device 23 switch

Claims (1)

[Claims] 1. A fin mounted on one surface of a Peltier element and immersed in water in a water tank, a plate-shaped stabilizing heat transfer member mounted on the other surface of the element, and a DC voltage is supplied to the element. A power supply device; a temperature sensor for detecting a water temperature of the water tank; a circulation pump for supplying the stabilizing heat transfer body with a stable liquid in the tank via a circulation hose; and a detection temperature of the sensor is a predetermined high temperature. A water temperature stabilizing device for a water tank, comprising: a switch for energizing in a reverse direction when the temperature is lower than a predetermined low temperature with respect to the energizing direction of the element at the time of the above.