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drain pump

A technology of drainage pump and pump casing, applied in the direction of pump, pump element, non-variable-capacity pump, etc., can solve the problems of noise deterioration and collision, and achieve the effect of reducing noise

Active Publication Date: 2018-05-25
SAGINOMIYA SEISAKUSHO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in the technique disclosed in Patent Document 2, if the position of the window frame is not correct, a part of the air layer inside the vane becomes air bubbles and blows out from the window frame, enters the discharge port of the main body, and collides with the inner wall of the discharge port, causing noise. Deterioration and other issues

Method used

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Embodiment Construction

[0031] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0032] figure 1 It is a figure which shows the structure of one embodiment of the drain pump of this invention.

[0033] figure 1 Among them, the drainage pump 100 is composed of the following components as main elements: a lower casing 110; a pump rotor 111 rotatably disposed in the lower casing 110; The housing 120 ; the driving motor 121 disposed on the upper portion of the upper housing 120 and driving the pump rotor 111 ;

[0034] The lower case 110 is formed to have: a suction port 110a extending downward in the lower part of the central part in a cylindrical shape; A small-diameter portion 110c extending in a direction perpendicular to the central axis of the suction port 110a; and a discharge port 110d extending outward from the small-diameter portion 110c. As will be described later, one end of the suction port 110a of the lower case 110 is disposed, for ex...

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Abstract

The invention provides a draining pump which can avoid the bubble invading towards the outlet even if the bubble is generated in the blade of the pump rotor and erupts from the slit of the outer wall, can reduce the noise and improve the cut-out head. The draining pump includes a pump shell including a suction inlet, an outlet and a rotor accommodating chamber, and a pump rotor rotating by a rotation driving mechanism, rotationally disposed in the rotor accommodating chamber of the pump shell and including a blade with major diameter passing by the suction inlet and given centrifugal force by the guided fluid. The pump rotor also includes a circular outer wall surrounding the blade with major diameter, and one or more medial-lateral diameter connection part disposed on part of the outer wall surrounding the periphery of upper border of the blade with major diameter. The position of the center line of the medial-lateral diameter connection part is closer than the position of the outlet to the direction of the upper border of the blade with major diameter.

Description

technical field [0001] The present invention relates to a drainage pump, and more particularly to a drainage pump capable of increasing the shut-off head while maintaining high quietness. Background technique [0002] In air conditioners, there is known a drain pump provided to drain water and the like accumulated in a drain pan to the outside. In such a drainage pump, a motor is used to rotate the pump rotor having large-diameter blades and small-diameter blades housed in the pump chamber, and the centrifugal force generated by the collision with the large-diameter blades is used to move the water sucked up by the small-diameter blades to the blade shape. The direction is scattered and discharged from the discharge port. [0003] In recent years, the reduction of operating noise in air-conditioning equipment has been sought, and the operation noise of a drain pump installed in the air-conditioning equipment and various types of noises associated therewith have also been so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D1/14F04D29/043F04D29/66
CPCF04D1/14F04D29/043F04D29/669
Inventor 日下直树滨田正吾富田沙祈子
Owner SAGINOMIYA SEISAKUSHO INC