Unlock instant, AI-driven research and patent intelligence for your innovation.

Drain pump

A technology for draining pumps and pump chambers, applied in the field of draining pumps, can solve the problems of increasing the number of parts, reducing the sealing performance of sealing members, and dimensional changes, and achieving the effect of preventing electric leakage or rusting of the motor shaft and reducing the number of parts

Inactive Publication Date: 2012-05-09
SANKYO SEIKI MFG CO LTD
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In Patent Document 1, in order to prevent the drain water from adhering to the motor, it is necessary to provide a water diversion plate and a sealing member, resulting in an increase in the number of parts
In addition, in Patent Document 1, since a sealing member is arranged between the impeller connected to the motor shaft and the water dividing plate attached to the motor shaft, if the motor shaft and the impeller are not mounted with high precision in the axial direction, the impeller may There is a problem that the dimension between the water distribution plate and the water distribution plate will be reduced, and the sealing performance of the sealing member will be reduced.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Drain pump
  • Drain pump
  • Drain pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0121] (the whole frame)

[0122] figure 1 It is a perspective view of the external appearance of the discharge pump. figure 2 is a longitudinal sectional view of the discharge pump. Such as figure 1 As shown, the drain pump 1 is arranged above the drain pan 100 in the indoor unit of the air conditioner, wherein the drain pan 100 receives the drain water D generated in the indoor unit by the evaporator during cooling or dehumidification.

[0123] The drain pump 1 has a motor unit 2 and a pump unit 3 as drive sources. In the state of using the discharge pump 1, such as figure 1 As shown, the pump part 3 is located below the motor part 2 , that is, on the side of the drain pan 100 . Three attachment arms 21 for fixing the drain pump 1 to the indoor unit protrude upward from the upper portion of the motor unit 2 . A motor shaft 22 protrudes downward from the lower end surface of the motor unit 2 .

[0124] The pump unit 3 includes a suction pipe 30 extending downward and ...

Embodiment 2

[0170] Next, refer to Figure 8 The discharge pump of Example 2 equipped with the water separation member different from the above-mentioned example is demonstrated. Figure 8 It is a longitudinal sectional view of the pump part of the discharge pump of this example. Since the drain pan 1A of this example has the same motor part 2 as the above-mentioned drain pan 1, illustration thereof is omitted. In addition, since the pump unit 3 of the drainage pump 1A of this example has the same structure as the pump unit 3 of the above-mentioned drainage pump 1, corresponding components are given the same reference numerals and their descriptions are omitted.

[0171] In this example, the water separating member 40 is constituted by an annular plate having a certain thickness. The impeller 34 has an annular groove 342g extending in the circumferential direction on the outer peripheral surface of the shaft end portion 342a of the shaft portion 342 exposed above the bottom plate 361 of ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A drain pump can prevent adhesion of leaked water on a motor shaft just through a water dividing component, wherein the leaked water flows out from a through hole which is formed on a pump chamber housing that divides a pump chamber. A drainage pump (1) comprises the following components: an impeller body (341) which is configured in the pump chamber (33); a shaft part (342) which extends out from the impeller body (341) upwards, passes through the pump chamber (33) and is formed in the through hole (331) of a base plate (361); and a dent part (345) which is formed on the shaft part (342) for being pressed into by a motor shaft (22). The water dividing component (37) comprises the following components: a cylindrical cylinder part (371) which is equipped at a shaft end (342a) of the shaft part (342), which is exposed upwards from a base plate (361) of the pump chamber housing (36), and abuts against an outer peripheral surface (342e) of the shaft end (342a); and an annular flange part (372) which extends from the cylinder part (371) in a radius direction that is orthogonal with the motor shaft (22). The water dividing component (37) is equipped on the impeller (34), and the motor shaft (22) is not exposed therebetween.

Description

technical field [0001] The present invention relates to a drain pump for discharging drain water (drainage) accumulated in a drain pan. More specifically, it relates to a discharge pump including a water separating device for preventing drain water overflowing from a through hole formed in a pump chamber casing that divides the pump chamber from adhering to a pump that is a driving source. electric motor. Background technique [0002] In the indoor unit of the air conditioner, the drain water generated in the indoor unit by the evaporator during cooling or dehumidification is received in the drain pan, the drain water accumulated in the drain pan is sucked up by the drain pump, and Vent to the outside. The discharge pump has: a pump part including a pump chamber and an impeller disposed in the pump chamber; and a motor part including a motor shaft coaxially connected to the impeller, and the discharge pump is positioned below the motor part. used in the state. [0003] I...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F04D13/06F04D29/00
CPCF04D1/14F04D13/06F04D29/044F04D29/20
Inventor 原田隆司小窪信树
Owner SANKYO SEIKI MFG CO LTD