JP2013240407A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To omit a detergent dissolving step which is performed before a washing step to dissolve detergent, and to improve washing performance by pouring highly concentrated washing liquid onto the entire laundry, in a washing machine provided with a circulation water path in a washing/dewatering tub.SOLUTION: In an inner face of a washing/dewatering tub 1 in which a pulsator 2 is rotatably disposed at a center bottom part, a circulation water path 14 is formed by the washing/dewatering tub 1 and a circulation water path cover 13, a cover 15 for detergent feeding is provided to be freely opened/closed in the middle of the circulation water path cover 13, and an opening is provided at a side face of the washing/dewatering tub so that the detergent fed from the cover for detergent feeding flows outside of the washing/dewatering tub. A rib provided at the cover for detergent feeding configures the rib into which detergent is positively fed without being spilt into the washing/dewatering tub when the detergent is fed into the washing/dewatering tub.

Description

  The present invention relates to a washing machine in which a washing and dewatering tank is provided with a detergent charging cover.

  Conventionally, this type of washing machine is generally configured as shown in FIG. Hereinafter, the configuration will be described.

  FIG. 7 is a longitudinal sectional view of a conventional washing machine. As shown in FIG. 7, the washing / dehydrating tub 25 has a pulsator 26 rotatably disposed on the bottom surface, the water receiving tub 27 is provided outside the washing / dehydrating tub 25, and the motor 28 has a speed reduction mechanism. The washing / dehydrating tub 25 or the pulsator 26 is driven via the cum clutch 30. The drain valve 31 drains the washing water in the washing / dehydration tank 25, and the water supply valve 32 supplies water to the washing / dehydration tank 25. Further, the water receiving tank 27 is supported on the housing 33 by a suspension 34 for vibration isolation. An annular fluid balancer 35 is provided at the top of the washing and dewatering tub 25 to reduce vibration during dehydration.

  The control device 36 controls the motor 28, the drain valve 31, the water supply valve 32, etc., and sequentially controls a series of steps of washing, rinsing and dehydration.

  A circulation lint water channel 38 is formed on the inner surface of the washing and dewatering tub 25 by the circulation water channel cover 37 and the washing and dewatering tub 25 (see, for example, Patent Document 1).

  The operation in the above configuration will be described. After putting the laundry into the washing and dewatering tub 25, the user opens the detergent charging cover 40 and puts the detergent. The detergent falls into the pump chamber 42 between the washing / dehydrating tank 25 and the circulation channel cover 37. Thereafter, when washing is started, the control device 36 controls the water supply valve 32 to supply predetermined water into the washing and dewatering tub 25. Thereafter, the washing and dewatering tub 25 rotates according to the rotation of the motor 28 controlled by the control device 36, and the detergent that has fallen between the pump chambers 42 is dissolved. When the water supply further proceeds and the pulsator 26 is driven, the detergent put into the pump chamber 42 is pushed outward by the mechanical force of the rotation of the lower blade 41 and ascends the circulating lint water channel 38 from the pump chamber 42. In this way, the laundry and the washing liquid in the washing and dewatering tank 25 are agitated, and the laundry is washed.

JP-A-63-1117798

  However, in the conventional configuration, when the washing liquid reaches the lint filter 39 before the detergent is completely dissolved, the detergent remains on the filter mesh of the lint filter 39 or the detergent is clogged. Had. Further, in order to dissolve the detergent of the lint filter 39, there has been a problem that a detergent dissolving step of rotating the pulsator 26 so as not to raise the washing liquid to the lint filter 39 has to be performed before the washing step.

SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and a washing / dehydrating tub for storing laundry is rotatably accommodated in a water receiving tub, and the washing / dehydrating tub is configured to be driven to rotate by a driving means. The washing machine is provided with a detergent insertion part that can be opened and closed on the cover, and can supply the detergent to the outside of the washing and dewatering tank via the circulation channel cover.

  This makes it possible to dissolve the detergent at the water level lower than the normal washing water level by dissolving the water and the detergent by the rotation of the washing and dewatering tank, and the detergent dissolving process performed before the washing process in order to dissolve the detergent The purpose of this method is to improve the cleaning performance by preventing undissolved detergent and pouring a high-concentration washing liquid over the entire laundry.

  In order to achieve the above object, the present invention provides a washing and dewatering tub having a pulsator rotatably disposed at the center bottom and an opening on a side surface, a water receiving tub for accommodating the washing and dewatering layer, and the washing A recirculating water channel formed by a washing / dehydrating water tank and a circulating water channel cover on the inner surface of the cum dewatering tank, and a detergent charging part provided in the circulating water channel so as to be openable and closable. The detergent is guided to the space formed by the washing and dewatering tank and the water receiving tank.

  As a result, it is possible to eliminate the detergent dissolving step that is performed before the washing step in order to dissolve the detergent, prevent the detergent from remaining undissolved, and pour high-concentration laundry liquid over the entire laundry to improve the washing performance. it can.

  As described above, according to the present invention, it is possible to omit the detergent dissolving step that is performed before the washing step in order to dissolve the detergent, prevent the detergent from remaining undissolved, and pour high-concentration washing liquid over the entire laundry. , Cleaning performance can be improved.

1 is a longitudinal sectional view of a washing machine according to Embodiment 1 of the present invention. Perspective view of essential parts of the washing machine with the detergent cover open Longitudinal sectional view of washing and dewatering tank of the washing machine Longitudinal sectional view showing opening and closing operation of detergent loading cover of the washing machine Longitudinal section of the washing machine detergent cover The principal part perspective view of the state which opened the detergent insertion cover in Embodiment 2 of this invention Vertical section of a conventional washing machine

  The present invention provides a washing and dewatering tub having a pulsator rotatably disposed at the center bottom portion and having an opening on a side surface, a water receiving tub for housing the washing and dewatering layer, and a wash on the inner surface of the washing and dewatering tub. A circulation water channel formed by a cum dewatering tub and a circulation water channel cover; and a detergent charging part provided in the circulation water channel so as to be openable and closable. The detergent is configured to guide the detergent into the space formed by the receiving tank.

  Thereby, the detergent dissolution process performed before the washing process in order to dissolve the detergent can be omitted, and the washing time can be shortened. In the detergent dissolution process, the rotation of the pulsator was restricted so that the washing liquid did not rise up to the lint filter, but there is no concern that the detergent will remain dissolved in the lint filter, so it is not necessary to restrict the rotation of the pulsator. , Cleaning performance can be improved. Moreover, even if the amount of water is small, the washing liquid having a high concentration can be poured over the entire laundry while preventing the detergent from remaining undissolved, so that the washing performance can be improved.

  Moreover, the said opening part of this invention is provided with two or more in the said circulation water channel, and the detergent guidance | induction part which guide | induces a detergent to the said several opening part is provided in the said detergent addition part.

  Thereby, possibility that a detergent will be thrown into a washing and dehydration tank becomes low, and it can prevent that a detergent remains in a lint filter.

  Moreover, the said detergent guidance | induction part of this invention is provided in the inner wall of the said detergent injection | throwing-in part. The ribs can guide the detergent into the plurality of openings, reduce the possibility of the detergent being put into the washing and dewatering tank, and prevent the detergent from remaining on the lint filter.

(Embodiment 1)
Embodiment 1 of the present invention will be described below with reference to the drawings.

  FIG. 1 is a longitudinal sectional view of a washing machine according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of a main part of the washing machine according to Embodiment 1 of the present invention with the detergent cover open. FIG. 4 is a longitudinal sectional view of the washing and dewatering tub of the washing machine according to Embodiment 1 of the present invention, and FIG. 4 is a longitudinal sectional view showing the opening and closing operation of the detergent charging cover of the washing machine according to Embodiment 1 of the present invention. 5 is a longitudinal sectional view of a detergent charging cover of the washing machine according to Embodiment 1 of the present invention.

  As shown in FIG. 1, the washing and dewatering tub 1 has an opening at the top, and a pulsator 2 is rotatably disposed at the center bottom. The water receiving tank 3 is provided outside the washing / dehydrating tank 1 and accommodates the washing / dehydrating tank 1. The motor 4 rotationally drives the washing / dehydrating tub 1 or the pulsator 2 via the belt 5 and the speed reduction mechanism / clutch 6. The drain valve 7 drains the washing water in the washing / dehydrating tank 1, and the water supply valve 8 supplies water to the washing / dehydrating tank 1. Further, the water receiving tank 3 is supported by the housing 9 in a vibration-proof manner by a suspension 10. The annular fluid balancer 11 is provided in the upper part of the washing / dehydrating tub 1 and reduces vibration when the washing / dehydrating tub rotates, such as during dehydration.

  The control device 12 controls the motor 4, the drain valve 7, the water supply valve 8, and the like to sequentially control a series of steps of washing, rinsing, and dewatering.

  A circulation water channel 14 is formed on the inner surface of the washing and dewatering tank 1 by the circulation water channel cover 13 and the washing and dewatering tank 1. A detergent charging cover 15 (detergent charging part) is provided in the middle of the circulating water channel cover 13 so as to be opened and closed. A plurality of detergent charging covers 15 are provided, and two are provided in the present embodiment. The detergent charging cover 15 is provided so as to cover the joint portion of the washing and dewatering tank 1. The circulation water channel cover 13 and the detergent charging cover 15 are configured so that the joint portion of the washing and dewatering tub 1 is not visible to the user, so that the appearance is good.

  As shown in FIG. 2, a plurality of openings 24 are provided on the side wall of the washing and dewatering tub facing the lower portion of the detergent charging cover 15. The opening 24 is divided into openings 24 a and 24 b so as to straddle the joint of the washing and dewatering tub 1, and the detergent charging cover 15 rotates about the shaft 17. The detergent charging cover 15 is configured to be detachable from the circulation water channel cover 13.

  At the time of opening, the end of the detergent charging cover 15 is configured to protrude into a space formed by the washing / dehydrating tub 1 and the water receiving tub 3. Thereby, when the detergent charging cover 15 is opened and the detergent is charged, the detergent can be supplied to the outside of the washing and dewatering tank 1.

  The detergent charging cover 15 is provided with a rib 25 that covers the end face of the opening 24. The rib 25 is intended to guide the detergent so that the detergent does not spill out when the detergent is poured from the detergent charging cover 15.

  The operation of the above configuration will be described below.

  After the user puts the laundry into the washing and dewatering tub 1, the detergent cover 15 is opened. At the time of opening, the detergent charging cover 15 is inclined slightly upward from the horizontal. When the user puts the detergent on the detergent receiving surface 15a (inner wall) of the detergent charging cover 15, the detergent charging cover 15 communicates with the outer peripheral side of the washing / dehydrating tank 1, so that the detergent is washed / dehydrated. 1 and a space formed by the water receiving tank 3. Further, when the user closes the detergent charging cover 15, part of the detergent remaining on the detergent receiving surface 15 a of the detergent charging cover 15 falls downward from the inclined detergent loading cover 15. At this time, the rib 25 (detergent guiding portion) is provided so as to straddle the openings 24a and 24b so that no gap is formed between the circulating water channel cover 13 and the opening / closing operation. The ribs 25 prevent the detergent from spilling into the washing / dehydrating tub during the opening / closing operation.

  Thereafter, when washing is started, the control device 12 controls the water supply valve 8 to supply predetermined water into the washing and dewatering tub 1. In accordance with the rotation of the motor 4 controlled by the control device 12, the washing and dewatering tub rotates. At this time, the detergent between the washing / dehydrating tub 1 and the water receiving tub 3 is dissolved by the momentum of the water in the rotating washing / dehydrating tub 1.

  Thus, by comprising, by mixing a detergent with water initially, the detergent melt | dissolution process performed before a washing process in order to dissolve a detergent can be skipped. In the detergent dissolution process, the rotation of the pulsator was restricted so that the washing liquid did not rise up to the lint filter, but there is no concern that the detergent will remain dissolved in the lint filter, so it is not necessary to restrict the rotation of the pulsator. , Cleaning performance can be improved. In addition, even with a small amount of water, it is possible to pour a high concentration of washing liquid over the entire laundry while preventing the detergent from remaining undissolved. The performance can be improved.

(Embodiment 2)
FIG. 6 is a perspective view of a main part in a state where the detergent charging cover according to Embodiment 2 of the present invention is opened. In the present embodiment, the detergent charging cover 15 is provided with a protrusion as a detergent guiding part. The other embodiments use the first embodiment. Hereinafter, a configuration different from that of the first embodiment will be described.

  As shown in FIG. 6, a protrusion 26 is further provided on the detergent receiving surface 15 a (inner wall) of the detergent charging cover 15. When the detergent charging cover 15 is closed, the detergent falls between the washing and dewatering tank 1 and the water receiving tank 3. At this time, since the protrusion 26 guides the detergent to smoothly flow out to the opening of the circulating water channel cover during the opening / closing operation, the detergent can be prevented from spilling into the washing / dehydrating tub during the opening / closing operation. Therefore, it is possible to prevent the detergent from remaining on the lint filter.

  INDUSTRIAL APPLICABILITY The present invention is useful as a domestic washing machine and a washing / drying machine because the detergent charging unit can guide the detergent to the space formed by the washing / dehydrating tub and the water receiving tub at least when opened.

DESCRIPTION OF SYMBOLS 1 Washing and dewatering tank 2 Pulsator 3 Water receiving tank 13 Circulating water channel cover 14 Circulating water channel 15 Detergent input cover (detergent input part)
22 Discharge port 24 Opening 25 Rib (detergent guide)
26 Protrusion (detergent guide)

Claims (3)

A washing and dewatering tub with a pulsator rotatably disposed at the center bottom and an opening on the side surface;
A water receiving tub that houses the washing and dewatering tub;
A circulation channel formed by a washing / dehydration tank and a circulation channel cover on the inner surface of the washing / dehydration tank;
A detergent charging portion provided in the circulation channel so as to be freely opened and closed,
The washing machine for introducing the detergent into the space formed by the washing and dewatering tub and the water receiving tub at least when opened. A plurality of the openings are provided in the circulation channel,
The washing machine according to claim 1, wherein the detergent charging section is provided with a detergent guiding section for guiding the detergent to the plurality of openings. The washing machine according to claim 2, wherein the detergent guiding part is provided on an inner wall of the detergent charging part.