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drain pump

A technology for drainage pumps and pump casings, which is applied to pumps, pump components, pump devices, etc., which can solve problems such as poor coaxiality and poor dimensional accuracy, and achieve excellent assembly, high coaxiality, and improved performance Effect

Active Publication Date: 2017-09-22
FUJIKOKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Generally, the dimensional accuracy of resin products is often worse than that of metal products
[0011] When assembling such a resin product with a large dimensional tolerance, dimensional errors accumulate and the coaxiality between the shaft of the rotating vane and the axis of the pump body deteriorates, which may cause vibration.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] figure 1 is a side view of the drainage pump of the present invention, figure 2 is a top view, image 3 yes figure 2 The A-A line sectional view.

[0066] The drain pump has a resin pump casing 10 , and a rotary vane 200 is attached to a pump chamber 12 of the pump casing 10 . A resin housing cover (hereinafter referred to as a lower cover) 40 is attached to the upper portion of the pump housing 10 via an O-ring 30 . The lower cover 40 is detachably mounted on the pump casing 10 through the snap function by using the snap arm 14 provided on the pump casing 10 .

[0067] The lower cover 40 has a cover 46 covering the opening on the upper surface of the pump casing 10 , and an opening 48 through which the shaft 210 of the rotary vane 200 passes is formed at the center of the cover 46 .

[0068] The mounting portion 144 of the rotor assembly 140 described later is press-fitted into the shaft portion 210 of the rotary blade 200 . The motor 100 is mounted on the uppe...

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PUM

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Abstract

The invention provides a draining pump motor with excellent assembling property and high coaxial property; a lower shield (40) with a cover portion (46) is arranged on an upper portion of a housing (10) of the draining pump; an upper portion of the lower shield is provided with a stator assembling body (120) and a rotor assembling body (140) forming the motor; in the draining pump, an outer periphery of a stator core part (126) of a stator unit and an inner diameter portion (45) of the lower shield are regarded as assembling reference positions, thereby ensuing assembling precision.

Description

technical field [0001] The present invention relates to a drain pump for draining water accumulated in a drain pan of an air conditioner. Background technique [0002] The following patent documents show the basic structure of such a drain pump. [0003] In the drain pump, resin-made rotating blades are accommodated in a resin-made pump body. A resin cover having a cover member serving as an upper surface of the pump main body is attached to the upper part of the pump main body, and the motor is supported on the upper part of the cover. Also, the rotating blades are driven by the output shaft of the electric motor. [0004] prior art literature [0005] patent documents [0006] Patent Document 1: Japanese Patent Laid-Open No. 2009-264315 [0007] Patent Document 2: Japanese Patent Application Laid-Open No. 9-053591 [0008] The problem to be solved by the invention [0009] The structure of the latest drainage pump is: as the driving motor, the stator is resin molded...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D13/06H02K1/12H02K1/27
CPCF04D3/00F04D13/06F04D13/0613F04D13/08F04D13/12F04D15/00F04D27/00F04D29/40F04D29/406F04D29/426
Inventor 佐藤克司佐藤永
Owner FUJIKOKI MFG CO LTD