Drum-type washing machine

A drum type washing machine, drum technology, applied to other washing machines, washing machine control devices, washing devices, etc., can solve the problems of reduced rotation speed, weakened drum centrifugal force, and inability to effectively squeeze and wash, etc.

Active Publication Date: 2017-03-22
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] As a result, in the above-mentioned conventional drum-type washing machine, there is the following problem: that is, when the above-mentioned shower rinse is performed, it is necessary to wait for the rotation speed of the drum to reach 300 rpm from the start.
However, the high-speed rotation of the drum when the washing water is accumulated in the drum and the laundry is uneven is the cause of large vibrations.
Therefore, although the above-mentioned squeeze washing is performed by suppressing the rotation speed of the drum in the above-mentioned Patent Document 1, there is a problem that the centrifugal force is weakened at the center side of the drum and the squeeze washing cannot be effectively performed.

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0040] figure 1 It is a schematic perspective view which looked at the front-loading washing machine of this embodiment obliquely from above.

[0041] Such as figure 1 As shown, the drum type washing machine includes an outer case 1 having an outer case opening 2 at the front.

[0042] The outer case opening 2 is opened and closed by a door 3 rotatably attached to the outer case 1 by a hinge. A part of the above-mentioned door 3 is made of transparent members such as glass, so that the drum 4 can be observed (refer to figure 2 )Inside.

[0043] Moreover, the operation display part 5 is provided in the front upper part of the outer case 1. As shown in FIG. The operation display unit 5 has operation keys for specifying operation details, a display unit, etc., and the display unit displays the operation contents determined by the operation keys. The front-loading washing machine performs a washing operation, a rinsing operation, a dehydration operation, etc. by inputting th...

no. 2 approach

[0090] This embodiment relates to the rinsing operation according to the cloth quality and capacity of the laundry. In addition, the basic structure and control block diagram of the front-loading-type washing machine in this embodiment are the same as those in the above-mentioned first embodiment. figure 1 with figure 2 The structure shown and Figure 5 The control block diagram shown is the same. Therefore, in this embodiment, using figure 1 with figure 2 The structure of the drum type washing machine shown and Figure 5 The control block diagram is shown for illustration.

[0091] When the amount of the above-mentioned laundry 7 (hereinafter referred to as the amount of cloth) is small, or when there are many chemical fiber clothes (hydrophobic fibers), in the rinsing process, even if the rotation speed of the drum 4 is lower than that of the first embodiment (that is, the centrifugal force is small), ) state, it is also easy to dehydrate the laundry 7. Therefore, i...

no. 3 approach

[0114] In this embodiment, the rinsing effect of the "water storage rinsing" in the above-mentioned rinsing process is improved and the time is shortened. In addition, the basic structure and control block diagram of the front-loading-type washing machine in this embodiment are the same as those in the above-mentioned first embodiment. figure 1 with figure 2 The structure shown and Figure 5 The control block diagram shown is the same. Therefore, in this embodiment, using figure 1 with figure 2 The structure of the drum type washing machine shown and Figure 5 The control block diagram is shown for illustration.

[0115] In the above-mentioned rinsing process, in the intermediate dehydration (high-speed dehydration after the final spray rinse) performed before the above-mentioned "water storage rinse" in the final stage, if the "water storage" is performed from the deceleration immediately before the end of the intermediate dehydration The water supply for "rinsing" ca...

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Abstract

Provided is a drum-type washing machine, comprising: a shower nozzle (25) which dispersal sprays water in a shower shape toward the interior of a drum (4) while rotating the water; a drive unit (17) which rotation drives the drum (4); a speed control unit (47) which variably controls the rotation speed of the drum (4); a shower water supply unit (14) which supplies the water to the shower nozzle (25); and a control device (41) which controls the drive unit (17), the speed control unit (47), and the shower water supply unit (14), carrying out a wash step, a rinse step, and a spin step. The control device (41) further comprises a shower rinse control unit (49) which, in the shower rinse step, controls the shower water supply unit (14) to supply the water to the shower nozzle (25), and instructs the speed control unit (47) to control the RPM of the drum (4) to a rinse RPM which is greater than a resonance RPM at which an outer casing (1) resonates.

Description

technical field [0001] The invention relates to a drum type washing machine. Background technique [0002] Conventionally, Japanese Patent Publication No. 4460557 (Patent Document 1) discloses a drum-type washing machine. In the rinsing process of the above-mentioned drum type washing machine, the washing water and dirt remaining on the clothes are removed by the centrifugal force generated by the drum rotation by means of a shower rinse in which water is supplied while the drum is rotating. [0003] At this time, after performing high-speed dehydration at a rotation speed of the drum of 900 rpm, water was supplied while the rotation speed of the drum was decreased, and the drainage was stopped after the elapse of time T1. Therefore, if the set water level is reached, the water supply will be stopped, and if the rotation speed of the drum reaches 300rpm, it will be kept at 300rpm, and the circulation pump will be driven to circulate the water in the drum and sprayed from th...

Claims

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Application Information

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IPC IPC(8): D06F33/02D06F37/04D06F39/08D06F33/38
CPCD06F37/04D06F2103/04D06F2105/48D06F33/38
Inventor 江场丰铃木裕之下口浩二长友芳郎
Owner SHARP KK
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