Cyclic preheater for single cavity permanent-magnet rotor pump and assembly method thereof

Abstract

The invention relates to a single cavity permanent-magnet rotor pump cycle preheater and the installation method that belongs to the preheating field for the engine of automobile. The feature is that: the cavity is made up of cavity main body, front cover and electric heating pipe fixed disk; the cavity main body is manufactured by the method of plastic injecting modeling and rotor cavity, outlet, front cover mouth, electric heating pipe mouth, stator groove are set on it; the permanent-magnet rotator, front bearing and impeller are installed into the heating cavity from the front cove mouth. The spirality part of the electric heating pipe is installed in the heating cavity from heating pipe mouth. The stator is fixed in stator groove. The temperature sensors are installed on the out side of the electric heating pipe fixed disk. The junction box is installed under the fixed disk and the stator groove. The electric heating pipe component should be installed first.

Description

technical field [0001] The invention relates to a single-cavity permanent magnet rotor pump circulation preheater and its assembly method, which belongs to the field of motor vehicle engine electric preheaters, and can also be applied to preheating, heating, temperature control, etc. of other engines and other machinery and equipment field. Background technique [0002] In a low temperature environment, motor vehicle engines will have difficulty starting due to fuel condensation, oil viscosity and other reasons. The most ideal way to solve this problem is to heat the engine in advance, this process is generally called warm-up. Through preheating, the cold start becomes a hot start, which not only starts smoothly, but also greatly reduces engine wear, and can also greatly reduce the emission of polluting gases in the engine exhaust and reduce fuel consumption. [0003] In order to achieve preheating, a preheater is usually installed on the engine. Compared with other prehe...

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Problems solved by technology

[0010] The purpose of the present invention is to propose a single-cavity permanent magnet rotor pump circulating preheater and its assembly method, which can more comprehensively solve the above-mentioned six defects of the prior art due to the unreasonable overall structure, and make the device simple in structure and easy to manufacture and assembly, improved sealing reliability, improved temperature measurement and temperature control accuracy, reliable overheat protection, good stator cooling and further miniaturization, reduced distance between inlet and outlet, easy to install

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