Double-pole single-throw type temperature controller

Abstract

The invention provides double-pole single throw typed temperature controller, comprising a first shell, a second shell which is laminated on the first shell, and a dual-metal sheet; the double-pole single throw typed temperature controller is characterized in that the double-pole single throw typed temperature controller also comprises a driving rod; the bottom end of the driving rod is adjacent to the dual-metal sheet and the top end thereof is adjacent to a second contact pair; furthermore, the middle position of the driving rod is provided with a lateral external convex part which is adjacent to a first contact pair; furthermore, under the driving of the dual-metal sheet, the top end of the driving rod and the external convex part at the middle part respectively lead the first contact pair and the second contact pair to be pushed away and separated simultaneously. Compared with the prior art, the double-pole single throw typed temperature controller connects out a two-step circuit which requires to be synchronously turned on or turned off by two temperature controller shells which are laminated with each other, and adopts only one dual-metal sheet to sense the temperature; furthermore, one driving rod is used for controlling the closing and opening of the contact pairs in the first shell and the second shell simultaneously, thus leading the circuits in the two shells to be turned on or turned off simultaneously and ensuring the synchronization of the two circuits.

Description

technical field [0001] The invention relates to a thermostat, which is applied to solar water heaters, air conditioners, household appliances, aerospace and other equipment or appliances that realize double-pole-single-throw control. Background technique [0002] Existing thermostat switch configurations are generally single pole single throw, single pole double throw and double pole single throw. Among them, single pole double throw means that one switch controls a group of circuits, and this group of circuits controls a group of normally closed contacts. As the temperature rises, the group of normally closed contacts opens; once the application temperature drops to a specific reset temperature, the contacts will automatically reset to their normally closed state. Single pole double throw is basically the same as single pole single throw, but this group of circuits controls two sets of contacts. When the normally closed contacts are disconnected, the auxiliary contacts are ...

AI Technical Summary

Problems solved by technology

However, most of the methods used in the prior art are to place the push rods of the two-stage switches against the same bimetal strip side by side, that is, there are two contact points on the same bimetal strip that are opposed to different push rods. The contact point may cause the bimetal to flicker or sway due to unbalanced force when it jumps suddenly. As a result, the synchronization of the two-stage circuits cannot be well guaranteed. There may be a delay between the two, causing damage to electrical equipment

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