JPS6234278U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of an embodiment of the thermal damper device of the present invention when the inside of the refrigerator compartment is in a low temperature state, FIG. 2 is a vertical cross-sectional view of FIG. Figure 4 is a component force diagram showing the change in torque of the bias spring when the angle between the line connecting the rotating shaft and the mounting hole of the bias spring and the direction of the center axis of the bias spring changes in the state shown in Figure 2. FIG. 1 is a vertical side view of a conventionally commonly used refrigerator-freezer. In addition, 2: Thermal damper, 3: Refrigerator room, 4:
Cooler, 5: Temperature-sensitive actuating member, 6: Bias spring,
7: Arm, 12: Fixed shaft, 13, 14: Fixed end, 18: Fixture.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a refrigerator-freezer equipped with a thermal damper 2 that opens and closes a passage of cold air from a cooler 4 depending on the temperature inside a refrigerator compartment 3, a fixture 1 is installed across a rotating shaft 12.
The bias spring 6 has a fixed end 14 on one arm 7 which is biased in opposite directions between the bias spring 6 and the fixed end 13 on the other arm 7. A thermal damper opening/closing device for a refrigerator-freezer, comprising a temperature-sensitive operating member 5 made of a shape memory alloy. 2. The angle between the line connecting the rotating shaft 12 and the fixed end 14 of the bias spring 6 and the central axis of the bias spring 6 is 90° or less, and the temperature-sensitive actuating member 5 has a memorized shape. The thermal damper opening/closing device according to claim 1, wherein the fixed end 11 is provided so that the angle becomes small when returning.