Electromagnetic clutch water pump with adjustable follow-up rotation speed

Abstract

The invention discloses an electromagnetic clutch water pump with an adjustable follow-up rotation speed, and relates to the technical field of automobile cooling systems. The electromagnetic clutch water pump comprises a pump body, a belt wheel and a clutch mechanism; the pump body is provided with a water pump shaft; one end of the water pump shaft is connected with an impeller; the other end ofthe water pump shaft is provided with a bearing sleeve, the belt wheel sleeves the bearing sleeve through a bearing, an end cover is fixedly connected to the belt wheel, and the clutch mechanism comprises an armature piece arranged between the belt wheel and the end cover, a spring piece connected to the armature piece, and a magnetic pole ring connected to the spring piece; the magnetic pole ring is fixedly connected with the water pump shaft so as to synchronously rotate with the water pump shaft, and a plurality of stepped holes are annularly formed in the magnetic pole ring; permanent magnets are detachably installed in the stepped holes, and an electromagnetic coil is fixedly arranged on the pump body; the electromagnetic coil is located below the armature piece, and a cooling fin isarranged on the inner top surface of the end cover; and the cooling fin is positioned above the magnetic pole ring. By designing the universal magnetic pole ring structure, the purpose of quickly adjusting the follow-up rotation speed of the water pump shaft is realized.

Description

technical field [0001] The invention relates to the technical field of automobile cooling systems, in particular to an electromagnetic clutch water pump with adjustable follow-up speed. Background technique [0002] The electromagnetic clutch water pump is a new technology product used to reduce the consumption of modern automobile engines. It can adjust the operation in time according to the temperature state of the engine to cool the engine. When the engine temperature is low and the engine has not reached the proper temperature, if the water pump is running at this time, the coolant pumped by the water pump will cool the engine, the warm-up time of the engine will be prolonged, and a part of power will be consumed at the same time, while the electromagnetic clutch water pump This problem is solved very well. By powering off the clutch, the 1:1 speed transmission between the pulley and the shaft of the water pump is cut off, so that the shaft of the water pump is driven by...

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Problems solved by technology

[0003] Usually the speed of the water pump shaft manufactured by the manufacturer will be designed according to the requirements of the customer on the demand side, but the requirements of customers are different. For example, the percentage of the speed of the follow-up to the speed of the pulley is required to be 20%, 30%, 50% and so on. In this way, it is often necessary to adjust the design of the magnetic pole ring, the structure of the permanent magnet in the electromagnetic clutch water pump, so as to manufacture a new magnetic pole ring to meet customer requirements. It is very troublesome, and some demand-side customers in other The engine needs to be tested during the self-production process. Due to the differences between the water pump unit test and the engine test, it is necessary to adjust the follow-up speed of the water pump shaft in a timely manner. The magnetic pole ring is used to meet customer requirements, which will not only lead to waste of cost but also prolong the delivery period, which will affect the normal test of the engine by customers

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