A liquid expansion temperature controller for electric baking pan

Abstract

The invention discloses a liquid expansion type temperature controller for an electric baking pan. The liquid expansion type temperature controller comprises a temperature sensing ball and a fixed block, wherein a top end of the temperature sensing ball is connected with a guide tube which comprises a first connecting tube and a second connecting tube, a bottom end of an inner part of the second connecting tube is in threaded connection with the first connecting tube, a first piston block is connected in an inner part of the first connecting tube in a sliding and sealed manner, an inner part of the temperature sensing ball is filled with expansion liquid, a top end of the expansion liquid contacts with a bottom end of the first piston block, a bottom end of the fixed block is provided with a first groove, a top end of the second connecting tube is a sealed structure, a top end of the second connecting tube is embedded in the first groove, a second piston block is connected in the second connecting tube in a sliding manner, a bottom end of the second piston block is connected with an elastic membrane sheet, and a side wall of the elastic membrane sheet is connected with an inner wall of the second connecting tube in a sliding and sealed manner; via the liquid expansion type temperature controller, three level control of the temperature controller can be realized, a large control scope can be achieved, a temperature range can be adjusted, and the controller is simple in structure and low in cost.

Description

technical field [0001] The invention relates to the technical field of temperature controllers, in particular to a liquid expansion temperature controller for electric baking pans. Background technique [0002] Thermostat, according to the temperature change of the working environment, physical deformation occurs inside the switch, resulting in some special effects, a series of automatic control elements that produce conduction or disconnection actions, or electronic components at different temperatures, The different principles of the working state provide temperature data to the circuit for the circuit to collect temperature data. The common mechanical bimetal thermostat basically has a structure of two contacts to control one circuit. The thermostat of this structure only It can control the switch of one circuit. When it needs to control the switch of two circuits, two temperature controllers must be used, which increases the production cost. Moreover, the existing temper...

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Problems solved by technology

[0002] Thermostat, according to the temperature change of the working environment, physical deformation occurs inside the switch, resulting in some special effects, a series of automatic control elements that produce conduction or disconnection actions, or electronic components at different temperatures, The different principles of the working state provide temperature data to the circuit for the circuit to collect temperature data. The common mechanical bimetal thermostat basically has a structure of two contacts to control one circuit. The thermostat of this structure only It can control the switch of one circuit. When it needs to control the switch of two circuits, two temperature controllers must be used, which increases the production cost. Moreover, the existing temperature controller has a complex structure and high cost. Therefore, we propose a A liquid expansion temperature controller for electric baking pan

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