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Pump and pump system

A pump system and pump control technology, applied in the field of pumps and pump systems, can solve problems such as poor system reliability and inability to detect system abnormalities, and achieve the effects of improving reliability, improving safety, and simple adjustment

Inactive Publication Date: 2011-05-25
SANKYO SEIKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the method of detecting the operating state of the pump 100 based on the rotation pulse signal, for example, when the operating state of the pump 100 is that the impeller is stuck, it is actually impossible to detect the system before transitioning to the stuck impeller state (that is, in advance). There is a problem of poor system reliability

Method used

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  • Pump and pump system
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Embodiment Construction

[0045] Next, the best mode for carrying out the present invention will be described with reference to the drawings.

[0046] 【Structure of pump system】

[0047] figure 1 It is a block diagram showing the configuration of the pump system according to the embodiment of the present invention.

[0048] exist figure 1 Among them, the pump system 1 is mainly composed of a pump 11 and a controller 31 for pump control. The pump 11 has a pump unit 13 including a rotor (and an impeller) fixed with permanent magnets, a plurality of stator coils 12 provided around the rotor, and a motor driver IC 14 as an example of a control circuit for controlling energization to the stator coils 12. , and a Hall element 15 for detecting the position of the permanent magnet. In addition, the motor driver IC 14 has: a regulator 16, a three-phase distribution logic block 17, a PWM (Pulse Width Modulation) control unit 18, a triangular wave generator 19, a high-side driver 20 and a low-side driver 22...

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Abstract

The invention provides a pump and pump system, which not only can restrain discreteness of Q-H character, reduce the discreteness of production, but also can detect out the abnormity of the system in advance. In addition, a pump and pump system are provided, because the current detecting resistance (104) can be easily changed, the convenience of the system can be improved. The pump 1 has a rotor fixing permanent-magnet, a plurality of stator windings (12) arranged around the stator, a control circuit (motor driver IC14) controlling the electricity conduction for the stator windings, and terminal section (P1-P5) connecting to the control circuit and external circuit, in the pump (1), the terminal section has current detection terminal (P6) detecting the current in the stator windings (12).

Description

technical field [0001] The present invention relates to a pump and a pump system used in hot water / fuel cycles such as electric water heaters and fuel cells, and more particularly to a pump and a pump system capable of suppressing product dispersion and improving reliability. Background technique [0002] For example, miniaturized DC brushless pumps are often used in hot water / fuel cycles such as electric water heaters and fuel cells. Such a pump has a stator coil of an electric motor and a rotor to which permanent magnets are fixed, and has a structure in which the rotor is connected to an impeller, and hot water and fuel can be discharged and discharged by rotation of the impeller. [0003] In addition, DC brushless pumps generally have an overcurrent protection function in order to prevent the excessive current generated when the pump is started and the impeller is stuck, etc. from affecting the motor driver IC. That is, an overcurrent detection terminal is provided on t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K11/00H02H7/08
Inventor 藤岛真
Owner SANKYO SEIKI MFG CO LTD