JPS6118381Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention simplifies the heating cycle control (regeneration cycle) of the desiccant for a refrigerator equipped with a drying cabinet that periodically heats a desiccant such as silica gel and automatically recycles it. The purpose is to make the

Conventionally, this type of refrigerator has been provided with a dedicated timer to control the desiccant heating cycle for regenerating the desiccant in the drying cabinet. Therefore, a defrost timer and a dedicated timer for the refrigerator are required.
It would have been extremely expensive.

One of the purposes of the present invention is to use the defrosting timer of a refrigerator as a timer for regenerating desiccant in a drying cabinet, and to reduce the price of such a refrigerator without using a dedicated timer for the drying cabinet.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be explained below using an electric circuit diagram. In the figure, 1 is a compressor that compresses refrigerant, and a fan motor 2 that forcibly circulates cold air into the refrigerator is connected in parallel with this compressor 1. 3 is a thermostat that controls the temperature inside the refrigerator. 4 is a timer that controls the defrosting cycle, which is energized when the thermostat 3 is turned on. The defrosting contact 4a of this timer 4 has a predetermined temperature.
A defrost heater 6 arranged in a thermally conductive manner is connected to a cooler (not shown) via a defrost completion detector 5 which is turned off. Reference numeral 7 denotes a heater made of a positive temperature coefficient thermistor or the like used to regenerate a desiccant (not shown) such as silica gel in the drying chamber, and is connected in parallel with the defrosting heater 6 described above. Reference numeral 8 denotes an electromagnetic solenoid provided in parallel with the heater 7, which is an operating source for an exhaust shutter (not shown) provided so that moisture generated from the desiccant during regeneration of the desiccant can be exhausted to the outside.

In such a configuration, when the operating time of the compressor 1 of the refrigerator is accumulated, for example, for 8 hours, the heater 7
The timer 4 is switched from the contact 4b to the defrosting contact 4a and is energized together with the defrosting heater 6, so that the desiccant in the drying cabinet is heated and regenerated. Moreover, when the desiccant is heated, the generated water vapor is simultaneously energized to the electromagnetic solenoid 8, thereby opening the exhaust shutter and discharging it to the outside of the refrigerator.

In addition, the defrost cycle of the refrigerator becomes shorter when the outside air becomes hot and humid due to the defrost completion detector.
Since it has the characteristic that the drying time becomes longer in a low temperature drying state, it is very logical to synchronize this defrosting cycle with the desiccant regeneration cycle of the drying warehouse, and it is fully suitable for practical use.

As is clear from the above examples, the present invention
A defrost heater is connected via a defrost completion detector to the defrost contact of a defrost timer connected between the compressor and the thermostat that controls the temperature inside the refrigerator, and the heater for heating the desiccant is connected to the Since it is connected in parallel with the defrost heater, it can not only function as the defrost timer and the desiccant heater timer, but also adjust the heating cycle of the desiccant heater to the defrost cycle depending on humidity conditions. Effects such as rational control can be obtained.

[Brief explanation of the drawing]

The drawing is an electrical circuit diagram of a refrigerator with a drying cabinet showing an embodiment of the present invention. 7... Heater, 4... Defrost timer, 8... Electromagnetic solenoid.

Claims (1)

[Scope of utility model registration request] In equipment equipped with a drying chamber that regenerates the desiccant by periodically heating the desiccant, a defrosting timer is connected between the compressor that compresses the refrigerant and the thermostat that controls the temperature inside the chamber. , a defrosting heater is connected to the defrosting contact of the defrosting timer via a defrosting completion detector, and a heater for heating the desiccant is connected in parallel to the defrosting heater. Refrigerator with storage.