A thermostatic capsule

Abstract

This utility model discloses a constant temperature thermostat, including a shell. The lower part of the shell is filled with paraffin wax, and a diaphragm is installed in the upper part of the shell, with the diaphragm positioned on top of the paraffin wax. A guide seat is installed in the upper part of the shell, and a rubber column is slidably connected to the lower part of the inner side of the guide seat, with the rubber column positioned on top of the diaphragm. A push rod is slidably connected to the upper part of the inner side of the guide seat, and an anti-rupture ring is provided on the outer side of the upper part of the push rod, positioned above the guide seat. A wear-resistant pad is provided between the push rod and the rubber column. This utility model has a simple structure. The anti-rupture ring restricts the movement of the push rod at high temperatures. The push rod abuts against the rubber column, and the rubber column abuts against the diaphragm, preventing the rubber column and diaphragm from being subjected to excessive pressure. This avoids reducing the service life or rupturing the diaphragm, which would cause the operating temperature to rise and fail to reach the low temperature. This facilitates the long-term use of the thermostat, solves the problem of excessively high temperatures during use, and provides good performance.

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