Drum type washing machine

A drum-type washing machine and drum technology, which is applied to other washing machines, washing machines with containers, washing devices, etc., can solve the problem of increased noise, and achieve the effects of large circulation flow, low noise, and quietness.

Active Publication Date: 2015-03-25
HITACHI APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the rotation speed of the circulation pump is simply set quickly, a new problem of increased noise will arise.

Method used

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  • Drum type washing machine
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  • Drum type washing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0162] In this embodiment, the next impeller 46 is assembled on Figure 5 For the circulation pump 24 shown, noise was measured when the circulation pump motor 47 was rotated forward.

[0163] Figure 15 (a) is the plan view of the impeller used in embodiment one, Figure 15 (b) is Figure 15 (a) Side view of the impeller.

[0164] Such as Figure 15 As shown in (a) and (b), the impeller 46 is formed by arranging six curved plates on a base plate 46b (outer diameter 53 mm). Around the blade hub 46c, there are large blades 46a1, small blades 46a2, small blades 46a2, and large blades 46a1. , small blade 46a2, and the order of small blade 46a2 are arranged at equal intervals.

[0165] Incidentally, the outer diameter D of the large blade 46a1 and the small blade 46a2 in this embodiment is 44 mm.

[0166] The degree of curvature of the large blade 46a1 and the small blade 46a2 (the "curvature B" described above) is 8 mm.

[0167] Such as Figure 15 As shown in (b), the lar...

Embodiment 2

[0178]

[0179] Blade plate: six curved plates with cones (two large blades and four small blades) Bending B: 8mm

[0180] Blade height a: 21mm

[0181] Blade height b: 13.5mm

Embodiment 3

[0183]

[0184] Blade plate: six curved plates (two large blades, four small blades) curved B: 16mm

[0185] Blade height a: 21mm

[0186] Blade height b: 13.5mm

[0187] (Example 2)

[0188] Figure 16 (a) is a top view of the impeller described in Embodiment 2, Figure 16 (b) is viewed from the XVI direction Figure 16 (a) Side view of the impeller. In addition, in Figure 16 In (a) and (b), for the Figure 14 (a) and (b) The same structural elements are marked with the same symbols.

[0189] Such as Figure 16 As shown in (a) and (b), the impeller 46 is formed by arranging six curved plates (curvature B=8mm) on the base plate 46b (outer diameter 53mm). Around the blade hub 46c, the large blade 46a1, small blade 46a2, The order of the small blade 46a2, the large blade 46a1, the small blade 46a2, and the small blade 46a2 is arranged at equal intervals.

[0190] The impeller 46 of this embodiment is as Figure 16 As shown in (b), except that a taper T is formed a...

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PUM

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Abstract

The invention provides a drum type washing machine capable of ensuring relatively large circular flow and realizing lower noise. A circulating pump of the drum type washing machine provided by the invention has an impeller (46) which rotates in a way of sending out water from an outer groove into a drum when watering towards the inside of the drum, the impeller (46) has blades (46a) formed by a plurality of plate bodies arranged around a rotating shaft and radially configured, each blade (46a) bends from the rotating shaft side towards a radiation direction, and bending surfaces protrudes towards a rotation direction (r) of the impeller (46).

Description

technical field [0001] The present invention relates to a drum type washing machine. Background technique [0002] The drum of the front-loading washing machine is substantially horizontal or inclined so that the opening of the drum faces obliquely upward, and after putting clothes into the drum, a washing process, a rinsing process, and a dehydration process are performed. In the washing process and the rinsing process, the drum rotates at a low speed to lift up the laundry stored below the drum, and then perform a tumbling operation in which it falls from above the drum. By this tumbling operation, mechanical force is applied to the clothes to perform washing and rinsing. In the dehydration step, the drum rotates at a high speed, and the rotation squeezes moisture out of the clothes to perform centrifugal dehydration. [0003] In addition, in the washing process, the washing water in the washing tank (outer tank) is pumped by the circulation pump and sprinkled on the clo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06F21/00D06F39/08
CPCD06F21/00D06F39/083
Inventor 山口龙之介佐野壮一上野真司
Owner HITACHI APPLIANCES INC
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