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pump device

A technology for pump devices and pump chambers, which is applied to pump devices, pumps, components of pumping devices for elastic fluids, etc., and can solve problems such as large noise and reduced characteristics

Active Publication Date: 2021-02-09
SANKYO SEIKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, in the pump device described in Patent Document 1, if air accumulates in the pump chamber, the characteristics of the pump device such as discharge amount and discharge pressure may decrease, or loud noise may be generated.

Method used

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[0104] The above-mentioned form is an example of the best form of the present invention, but it is not limited thereto, and various modifications can be made without changing the gist of the present invention.

[0105] In the above-mentioned form, it is also possible to form a convex curved surface connecting the outer peripheral surface of the outer partition wall part 9d and the lower surface of the annular partition wall part 9f, that is, the outer side, at the boundary between the outer peripheral surface of the outer partition wall part 9d and the lower surface of the annular partition wall part 9f. A convex curved surface instead of the outer inclined surface 9j. In this case, the through hole 3d overlaps with the inner end of the outer convex curved surface in the radial direction of the rotor 6 when viewed from the vertical direction. In this case, when the impeller 3 is rotated to exhaust the pump chamber 11, the air accumulated between the driving magnet 16, the magn...

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Abstract

To provide a pump device that can easily discharge air from a pump chamber even if an outer rotor type motor is used as a driving source. In the pump device (1), the partition wall (9a) arranged between the rotor (6) and the impeller (3) and the stator (7) has a drive magnet (16) arranged on the outer peripheral side of the stator (7). An outer partition wall (9d) on the peripheral side, an inner partition wall (9e) arranged on the inner peripheral side of the stator (7), and an annular partition wall connecting one end of the outer partition wall (9d) and one end of the inner partition wall (9e) Section (9f). The blade forming portion (3b) of the impeller (3) facing the annular partition portion (9f) is formed with an annular partition portion in the radial direction of the rotor (6) when viewed from the axial direction of the rotation center shaft (18). The through hole (3d) overlapping the outer end (9p) of (9f) and the inner end (9r) of the annular partition wall portion (9f) in the radial direction of the rotor (6) when viewed from the axial direction of the rotation center axis (18) ) overlapping through-holes (3e).

Description

technical field [0001] The present invention relates to a pump device including an electric motor and an impeller rotated by the power of the electric motor. Background technique [0002] Conventionally, a pump device including a motor having a rotor and a stator, and an impeller rotated by the power of the motor is known (for example, refer to Patent Document 1). In the pump device described in Patent Document 1, the impeller, the rotor, and the stator are arranged inside a housing composed of a housing constituting a part of the motor and an upper upper housing covering the housing. A liquid suction port and a liquid discharge port are formed on the upper case. A pump chamber through which liquid sucked in from the suction port passes toward the discharge port is formed between the casing and the upper case. [0003] In the pump device described in Patent Document 1, the rotor includes drive magnets, and the drive magnets are arranged on the inner peripheral side of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D13/06F04D15/00F04D29/00
CPCF04D13/06F04D15/00F04D29/007
Inventor 大槻登
Owner SANKYO SEIKI MFG CO LTD