JPS59212B2 - How to connect a heater such as a toaster - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of connecting heater wires in a toaster in which two pieces of bread can be inserted into one roasting chamber, that is, a toaster with a long bread roasting chamber.

As shown in Figure 1, the heater wire connection method for conventional pan-toaster toasters with a long roasting chamber is a circuit in which two heater wires 1, which are located opposite each other and make up the roasting chamber, are simply connected in parallel. It was a composition.

However, the heater wire 1 in a toaster is a heater in which a nichrome heater is wound around a core such as a mica plate, and the longer the heater wire 1 becomes, the greater the resistance becomes.In order to obtain the required wattage, the diameter of the heater wire 1 must be This had a major drawback in that it had to be made thicker, making it difficult to wind it around the core. In order to eliminate the above-mentioned drawbacks, the present invention connects two heater wires located opposite to each other at three points at the corresponding ends and the center, and configures a circuit as if four heater wires were connected in parallel. This is what I did.

The present invention will be explained below with reference to the drawings. In Fig. 2, the heater wire 2, such as a nichrome wire, is a winding core made of an insulator such as a mica plate, and the heater wire 1 is wound around a plurality of cores, and the upper and lower ends of the winding core 2 are It is fixed with a clip 3 and constitutes one heater plate.

These two heater plates are placed opposite each other to form the bread roasting chamber of the toaster. 4, 5, and 6 are lead plates that connect both ends of each heater wire 1 and three points in the center.Lead wires 1, which will be described later, are attached to one side of these lead plates 4, 5, and 6.
, T', and T' are fixed by screws 9.

The lead wire T connects the heater wire 1 to the power source, the lead wire T' connects the center of the heater wire 1 to the power source, and the lead wire T'' connects one end of the heater wire 1 to the other end.This circuit configuration The circuit diagram is shown in Figure 3. With this circuit configuration, each heater section A, B, C, and D, which is composed of two heater wires, is connected in parallel to the power supply. , it is as if the circuit is made up of four heater wires.

However, in the present invention, there is no need to thicken the heater wire in order to obtain the necessary wattage.

To explain this point in more detail, for example, 10
In the case of a 0 volt, 600 W toaster, in the present invention, the resistance of one heater wire is approximately 130 ohms.

On the other hand, the conventional circuit has the same voltage of 100 volts and 600 volts.
In the case of W, the resistance of one heater wire is approximately 33 ohms, and based on this relationship, if the length of heater wire 1 is constant,
It is obvious that the present invention can make the heater thinner if the material of the heater is constant. As described above, in the present invention, the two heater wires are connected as if four heater wires were connected in parallel to the power supply, and the circuit was configured, so the heater wire can be made thinner, and the wires to the winding core can be made thinner. The work of winding the heater wire becomes extremely easy, and it is also extremely effective in terms of resource saving, and its utility value is extremely large.

4 and 5 show another embodiment of the present invention, in which a switch 8 is interposed in the middle of the lead wire r.

With this circuit configuration, switch 8 can be set to 0F.
F, only half of the corresponding heater wire 1 (A in the figure)
, C) are energized, this saves power and is even more effective, especially when baking only one loaf of bread.

[Brief explanation of drawings]

Fig. 1 is a circuit diagram showing a heater connection method in a conventional toaster, Fig. 2 is a perspective view of the heater configuration in a toaster of the present invention, Fig. 3 is its circuit diagram, and Fig. 4 is another embodiment of the present invention. FIG. 5 is a perspective view of a heater configuration in an example toaster, and FIG. 5 shows its circuit diagram. 1... Heater wire, 2... Winding core, 4,
5, 6... Lead plate, 7, 7', 7ζ...
·Lead.

Claims (1)

[Claims] 1. Heater connection for a toaster, characterized in that the circuit is configured as if four heater wires were connected in parallel by connecting two heater wires located in parallel to each other at the corresponding ends and three points in the center. Method.