JPS592459Y2 - refrigerator - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a refrigerator, such as a direct cooling type refrigerator, in which one side end surface of the cooler is fixed by the edge (decorative frame).

That is, in this refrigerator, as shown in FIGS. 1 and 2, the front edge of the cooler 1 constituting the freezer compartment A is supported by a frame 2, and the outer periphery of the cooler 1 has a refrigeration cycle evaporation tube 3 and a A frost heater 4 is wrapped around it.

Further, the frame 2 is also provided with a heater 5 to prevent frost formation.

Further, a partition wall 6 that partitions the freezer compartment A is provided with an anti-sweat heater 7.

The electric circuit in the conventional example with such a configuration is as shown in FIG.
is always energized regardless of the intermittent cooling operation of the compressor M or defrosting, and the defrost heater 4 is energized only when the defrost switch 8 is activated. The heater 5 and the anti-sweat heater 7 are each provided as independent components in terms of structure and electric circuit.

Therefore, the assembly and arrangement of each heater is labor-intensive and expensive, and there are drawbacks such as increased power consumption.

The present invention aims to eliminate the drawbacks of the above-mentioned conventional examples and provide a refrigerator with low power consumption, which is easy to install parts, and is inexpensive.

An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

In the figure, the same reference numerals as in FIGS. 1 and 2 indicate the same parts.

Here, there is no frame heater, and a portion 4' of the defrosting heater 4 is wrapped around the connection between the cooler 1 and the frame 2.

Further, the defrosting switch 8 has a common contact 9, a cooling contact 10, and a defrosting contact 11, and the defrosting heater 4 is connected between one power source E1 and the defrosting contact 11.

Further, the anti-sweat heater 7 is connected between the common contact 8 and the defrosting contact 11, which are connected to the other power source E2.

Additionally, a thermostat 12 is connected between the cooling contact 10 and the power source E1.
A series circuit of the compressor 13 and the compressor 13 are connected.

According to this, during normal intermittent cooling operation, the defrosting heater 4 and the anti-sweating heater 7 are connected in series, so the defrosting heater 4 generates weak heat and functions as a conventional picture frame heater.

The anti-sweat heater 7 has a resistance value set so as to generate the same heat as the conventional anti-sweat heater, and its function is also unchanged.

Next, during defrosting, the defrost switch 8 is connected to the cooling contact 1.
By operating from 0 to the defrosting contact 11 side, the common contact 9 and the defrosting contact 11 are closed, and the power supply voltage is directly applied to the defrosting heater 4, so that the strong heat required for defrosting can be obtained. This is rational and economical because no voltage is applied to the anti-sweat heater 7 and no heat is generated during defrosting when cooling is stopped.

Needless to say, the defrosting heater 4, which requires a large amount of heat, has a low resistance value, and the anti-sweat heater 7, which requires a small amount of heat, has a high resistance value.When these are connected in series, as described above, It almost prevents sweating and acts as a tough heat generator.

As is clear from the above description, the refrigerator according to the present invention includes a low-resistance defrosting heater that is provided at least in part close to the frame that supports one side of the cooler, and a It consists of a high-resistance anti-sweating heater provided on the front side of the dividing partition wall, and a defrost switch having a cooling contact and a defrosting contact, and a compressor is connected between the cooling contact and one power supply, and the defrosting contact The defrost heater is connected between one power source, and an anti-sweat heater is connected between the defrost contact and the other power source to bypass the defrost switch, which eliminates the need for a picture frame in the past. This makes it possible to eliminate the need for heaters in some parts, improve wiring and assembling efficiency, and reduce the number of heaters that are constantly energized, resulting in improved power savings.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the main parts of a conventional refrigerator, Fig. 2 is a schematic electrical circuit diagram of the same refrigerator, Fig. 3 is a sectional view of main parts of the refrigerator of the present invention-embodiment, and Fig. 4 is a schematic diagram of the same refrigerator. Shows an electrical circuit diagram. 1... Cooler, 2... Picture frame, 4.4'
... Defrost heater, 6 ... Compartment wall, 7.
... Anti-sweating heater, 8 ... Defrost switch, 10 ... Cooling contact, 11 ... Defrost contact, El ... One side Power supply, E2...
the other power source.

Claims (1)

[Scope of utility model registration request] A low-resistance defrosting heater that is provided at least in part near a frame that supports one side of the cooler, and a high-resistance anti-sweat heater that is provided at the front opening edge of the main body or in front of a partition wall that partitions the inside of the main body. , a defrost switch having a cooling contact and a defrosting contact; a compressor being connected between the cooling contact and one power source; and a defrosting heater being connected between the defrosting contact and one power source. , a refrigerator comprising an anti-sweat heater connected between a defrost contact and the other power source to bypass the defrost switch.