CN2115649U

CN2115649U - Improved electronic water-heater for fish bowl

Info

Publication number: CN2115649U
Application number: CN 92207511
Authority: CN
Inventors: 蔡宪堂
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-22
Filing date: 1992-04-22
Publication date: 1992-09-16

Abstract

The utility model relates to a heater which can prevent the water heating-up temperature in the fish bowl from too high. A thermostatic control device is arranged in the heater body, a thermal resistor and a temperature regulation variable resistor turn knob are connected by an external electric wire and the thermostatic control device. The power-supply line end of the utility model is provided with a double spring thermostatic switch and a warning lamp, and the thermal resistor can be arranged at the proper position in the water tank of the fish bowl. The variable resistor turn knob can be stuck at the proper position of the outer margin of the fish bowl by the sticking board at the back, when the fault in the thermostatic device occurs, the power supply can be cut off by the double spring electric thermostat immediately.

Description

Improved electronic water-heater for fish bowl

The utility model relates to a kind of improved electronic type fish jar water temperature heater.

Common fish jar water temperature heater mainly is that the water temperature with fish jar is heated to the temperature that fish can adapt to, if the temperature heating is too high, then can cause fish death.

As shown in Figure 1, common electronic type fish jar water temperature heater mainly comprises: heater body 1, it is a glass tube barred body, has heater coil 11 in the pipe of bottom, coil 11 upper ends are separated the thermistor R1 of a coil burner on light 111 and a sensing water temperature by a dividing plate, then be provided with the upper shield 12 of a sealing orifice in mouth of pipe upper end, on upper shield 12, also be provided with connection jaws 120;

Controller 2 is to be located at box body 200 outer temperature by the box body 200 and that a thermostatically-controlled equipment 20, is equipped with thermostatically-controlled equipment to transfer variable resistance knob VR1 to be constituted.Thermostatically-controlled equipment 20 as shown in Figure 2, it mainly comprises the two-way thyristor TR(TRIAC of heater coil 11 in the heater body 1), one triggers the comparator IC of two-way thyristor TR conducting heater coil 11 power supplys, make the thermistor R1 in the heater body 1 be connected on comparator IC one pin mutually, and temperature is adjusted another pin that variable resistance knob VR1 is connected on comparator IC mutually;

After doing the setting of fish jar heating-up temperature by the adjustment of the temperature on the controller 2 variable resistance VR1, just can be by the water temperature sensing of thermistor R1 in the heater body 1, the output of decision comparator IC current signal triggers two-way thyristor TR, the current switching of heater coil 11 in the control heater body 1.When thermistor R1 sensed temperature was lower than temperature and adjusts the temperature that variable resistance turn-knob VR1 sets, then two-way thyristor was current conductive state, and heater coil 11 carries out the heating of fish jar water temperature immediately; And when the heating-up temperature that water temperature equals to set, then cut off the power supply and heat to stop heater coil 11 heatings, reach the constant temperature of fish jar water temperature with this.

This common electronic type heater, under normal non-failure conditions, a kind of really effective heater, but the controller of this heater 2, volume is bigger, occupies certain space; Moreover this heater is used for the thermistor R1 of sensing temperature and is arranged in the heater body 1, because nearer apart from heater coil 11, directly accepts its heat conduction easily, and influence and reduce actual water temperature sensing accuracy; Particularly when controller 2 breaks down (in because of controller except that two-way thyristor TR, also have many electronic components, wherein in case damage, will influence the control action of entire controller), cause heater coil 11 to cut off the power supply most probably and stop heating, and cause the fish jar water temperature too high, cause fish death.

The purpose of this utility model is to provide a kind of operation control not take up space, and the constant temperature sensing is accurately stable, when thermostatically-controlled equipment breaks down, still can keep holding control device operate as normal, improved electronic type fish jar water temperature heater.

The purpose of this utility model is achieved in that between thermostatically-controlled equipment and heater coil, with a dividing plate at interval, and be located in the heater body, temperature-sensitive thermistor and temperature can be adjusted the variable resistance knob is connected with thermostatically-controlled equipment with electric wire respectively, mains terminals at thermostatically-controlled equipment is provided with a multiple spring thermostat and a warning, indicator lamp, and an appropriate location is provided with the temperature-sensitive thermistor in the fish jar, adjust variable resistance knob back in temperature and be stained with a viscose glue plate, and stick on fish jar outer rim appropriate location.

The utility model volume is little, and temperature control is accurate, and can utilize multiple spring thermostat promptly to cut off the electricity supply when attemperating unit breaks down, warning in time, and the reminds people water temperature is too high, should take measures at once, avoids fish death.

Fig. 1 is the structural representation of common electronic type fish jar water temperature heater.

Fig. 2 is the circuit diagram of common electronic type fish jar water temperature heater thermostatically-controlled equipment.

Fig. 3 is the utility model structural representation.

Fig. 4 is the circuit diagram of the utility model thermostatically-controlled equipment.

Below in conjunction with accompanying drawing the utility model is further described.

As shown in Figure 3, Figure 4, the utility model mainly comprises: heater body 10 is a glass tube barred body, is provided with heater coil 11 in the pipe of bottom, and mouth of pipe upper end is provided with the upper shield 102 of a close mouth of pipe, and this upper shield 102 is provided with three connection jaws 103; Controller 21, be to adjust variable resistance knob VR1 by a thermostatically-controlled equipment 22 and a temperature to be constituted, this thermostatically-controlled equipment 22 includes a two-way thyristor TR(TRIAC who is connected on heater coils 11 in the heater body 10 mutually), one triggers the comparator IC of two-way thyristor TR conducting heater coil 11 voltages; One thermistor R1 is used for surveying the fish jar water temperature, and is connected on comparator IC one pin.

Principal character of the present utility model is to separate with a dividing plate between thermostatically-controlled equipment 22 and the heater coil 11, and be arranged in the heater body 10, and temperature-sensitive thermistor R1 and temperature (setting) are adjusted variable resistance knob VR1, respectively by an external electric wire heater via body 10, upper shield 102, connection jaws 103 is connected with the bipod of the comparator IC of thermostatically-controlled equipment 22, wherein at power line one end of thermostatically-controlled equipment 22, be provided with a multiple spring thermostat SW1, and parallel connection is provided with a warning indicator lamp 220, the back side at temperature adjustment variable resistance knob VR1 is stained with the viscose glue plate 210 that sticks on the fish jar outer rim.

Heater body 10 is arranged in the fish jar tank, temperature-sensitive thermistor R1 then freely is arranged on arbitrary appropriate location in the fish jar tank, to carry out actual water temperature sensing accurately, and adjusting variable resistance knob VR1 with the outer electric wire and the temperature of heater body 10 is connected, and can utilize the viscose glue plate at the back side that VR1 is sticked on the arbitrary appropriate location of fish jar outer rim, not take bigger space.

After the temperature adjustment variable resistance knob VR1 of controller 21 does the setting of fish jar heating-up temperature, just can be according to the water temperature sensing of thermistor R1 in the fish jar, decide the output of comparator IC current signal to trigger two-way thyristor TR, with the current switching of heater coil 11 in the control heater body 10.That is to say that when the water temperature of thermistor R1 institute sensing was lower than temperature and adjusts the temperature that variable resistance knob VR1 sets, then two-way thyristor TR current lead-through made heater coil 11 carry out the water temperature heating; When water temperature reached or equal to adjust the water temperature that variable resistance knob VR1 sets, heater coil 11 outages and stop heating reaching fish jar water temperature thermostatic control effect with this.

When thermostatically-controlled equipment 22 breaks down and can't cut off the heating power supply of heater coil 11; but multiple spring switch SW 1 is the rising of the interior water temperature of sensing fish jar immediately; when arriving the critical switching temperature of the multiple spring switch SW 1 of constant temperature; switch motion; cut off the power supply of heater coil 11, stop water temperature and rise, and the warning indicator lamp is bright; inform that people take immediate steps, unlikely with the fish in the protection fish jar because temperature rises out of control and dead.

Claims

1, a kind of improved electronic type fish jar water temperature heater mainly comprises:

1) heater body is a glass tube barred body, is provided with heater coil in the pipe of bottom, is provided with the upper shield of a close mouth of pipe in mouth of pipe upper end, and this cover covers and is provided with three connection jaws 2;

2) controller, be to adjust variable resistance knob VR1 by a thermostatically-controlled equipment and a temperature to be constituted, thermostatically-controlled equipment includes a two-way thyristor TR who is connected on heater coil in the heater body mutually, and one triggers the comparator IC of two-way thyristor TR conducting heater coil voltage;

3) a thermistor R1,

It is characterized in that: thermostatically-controlled equipment and heater coil are with a dividing plate at interval, and be located in the heater body, temperature-sensitive thermistor and temperature are adjusted the variable resistance knob and are connected with the bipod of the comparator IC of thermostatically-controlled equipment with an electric wire heater via body upper shield connection jaws respectively, be provided with a multiple spring thermostat SW1 and parallel connection is provided with a warning indicator lamp in the mains terminals of thermostatically-controlled equipment, and be stained with a viscose glue plate at the back side that temperature is adjusted the variable resistance knob.