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Pump unit

A pump device and housing technology, applied in the direction of pumps, parts of pumping devices for elastic fluids, pump components, etc., can solve problems such as decreased efficiency, and achieve the effects of low durability, low noise, and excellent durability.

Inactive Publication Date: 2017-04-05
HITACHI APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, if the gap between the impeller 5 and the gasket surface 51 is large, the efficiency will be greatly reduced. Since such an area is required to obtain the frictional force, if the resin surface does not change, the efficiency will decrease due to the unique pores of the resin. Dropped significantly

Method used

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Embodiment Construction

[0021] Hereinafter, an embodiment of the present invention will be described using the drawings.

[0022] figure 1 It is a longitudinal cross-sectional view of the pump device according to the embodiment of the present invention. figure 2 It is an exploded perspective view of the pump head of the embodiment of the present invention. image 3 It is a perspective view in which a synthetic rubber packing is fastened to a synthetic resin case according to an embodiment of the present invention.

[0023] The pump device 100 of this embodiment is a vortex-type pump, and has a motor 1, a housing cover 3, an impeller 5, a check valve 9, a separation chamber 10, a seal 11, a groove 12, self-tapping screws 17, 18, and a partition 53, And housing 70.

[0024] In the pump device 100 of the present embodiment, the rotating shaft 2 of the electric motor 1 penetrates the housing 70, and a disc-shaped impeller 5 having a plurality of grooves 12 (vanes) is fastened to the periphery via a shaft seal...

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PUM

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Abstract

The invention relates to a pump unit which comprises advantages of good durability and low noise. The pump unit performs pump actions including sucking or discharging water through the driven of a motor, in the pump unit, and a water-touched surface is formed by a material with elasticity. In addition, the material with elasticity is a thermoplastic elastomer.

Description

Technical field [0001] The present invention relates to a pump device. Background technique [0002] As a conventional vortex-type pump device, there is a device shown in Patent Document 1. In paragraph 0016 of Patent Document 1, it is stated that "a partition wall 52 that divides a part of the water passage 13 into the suction side 14 and the discharge side 15 and a gasket surface 51 having a smaller diameter than the water passage 13 is used as a corrosion resistance. The inner ring 50 made of bronze is fastened to the synthetic resin housing 70 by a plurality of self-tapping screws 16." In addition, in paragraph 0019, it is stated that the following effect can be obtained: "Because it is generated on both sides of the partition wall 52 Because of the large pressure difference, the gasket surface 51 is provided to obtain frictional force and prevent loss. That is, if the gap between the impeller 5 and the gasket surface 51 is large, the efficiency will be greatly reduced, beca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D5/00F04D29/02F04D29/40
CPCF04D5/002F04D5/008F04D29/026F04D29/406F05D2300/431F05D2300/501
Inventor 小林孝弘田边正敏野村哲也
Owner HITACHI APPLIANCES INC