Thermostat for controlling coolant flow path

Abstract

The invention discloses a thermostat for controlling a coolant flow path. The thermostat comprises a cavity assembly, a wax bag, a blocking bracket and a main valve block, wherein the cavity assemblydefines an inner cavity and a first inlet and a second inlet are configured to establish fluid communication between the inner cavity and the coolant flow path; the wax pack is disposed in the inner cavity and comprises a push rod fixed to the cavity assembly and a wax pack main body movable relative to the push rod; the blocking bracket is configured to be driven by the wax pack main body for opening and closing of the first inlet; and the main valve block is configured to be driven by the wax pack main body and/or the blocking bracket for opening and closing of the second inlet. The wax packmain body comprises a housing, a rubber tube and a gland, wherein the housing is filled with wax; a cylindrical body of the rubber tube is inserted into the housing; and the gland has a buckle part,and the buckle part is buckled onto the housing to seal the rubber tube between the housing and the gland. The thermostat is easy to manufacture and can achieve precise control.

Description

technical field [0001] The present application relates to a thermostat for controlling a coolant flow path, which is capable of controlling various coolant flow paths, especially an engine coolant flow path. Background technique [0002] In order to ensure the normal operation of the engine, it is necessary to control the operating temperature of the engine within an appropriate temperature range. Engines are usually equipped with a cooling system to control engine temperature. A radiator, for example a grille radiator, is arranged in the coolant flow path of the cooling system. The coolant that has warmed up after cooling the engine can flow through the radiator to cool the coolant down. When the engine temperature is still low, the coolant does not need to flow through the radiator, or only a part of the coolant needs to flow through the radiator. For this reason, a thermostat is usually installed in the coolant flow path. The purpose is to automatically adjust the amou...

AI Technical Summary

Problems solved by technology

If the main valve of the thermostat is opened too late, it will cause the engine to overheat; if the main valve is opened too early, the engine temperature will be too low, and the engine warm-up time will be prolonged, resulting in insufficient combustion of the mixture, reduced power, increased Oil consumption, and cause poor lubrication, but also cause excessive emissions

[0003] Existing various forms of thermostats, their structures are usually more complicated, or the manufacturing process is more troublesome

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