CN114901894B

CN114901894B - washing machine

Info

Publication number: CN114901894B
Application number: CN202080090522.9A
Authority: CN
Inventors: 吉田由佳; 三觜绅平; 竹村结衣
Original assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd; Aqua Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd; Aqua Co Ltd
Priority date: 2019-12-26
Filing date: 2020-11-26
Publication date: 2023-11-28
Anticipated expiration: 2040-11-26
Also published as: CN114901894A; WO2021129300A1; JP2021104211A; JP7454811B2

Abstract

The invention provides a washing machine which can realize a smooth dewatering process, can effectively wash washings by using magnesium and can improve the maintainability of the magnesium. The washing machine (1) comprises a cylindrical washing tub (4) for containing washings and storing washing water, and a plurality of guide covers (8). The washing tub (4) can rotate about a rotation axis (J) passing through the center of the circle. The plurality of guide covers (8) are arranged on the inner surface portion of the washing tub (4) in a dispersed manner in the circumferential direction (P) around the rotation axis (J). The washing machine (1) includes a housing portion (9) removably attached to the plurality of guide covers (8) and housing the magnesium pellets (M), respectively.

Description

Washing machine

Technical Field

The present invention relates to a washing machine.

Background

Washing methods using magnesium are known. When magnesium is added to the tub of the washing machine, magnesium (Mg) and water (H) in the tub ₂ O) to produce magnesium hydroxide (Mg (OH) ₂ ) And hydrogen (H) ₂ ) The water in the water tub is modified to contain magnesium ions (Mg ² ⁺ ) And hydroxide ion (OH) ^- ) Is a basic ion water. Since the alkaline ionized water has an action of decomposing the grease component in the same manner as the detergent, dirt can be removed from the laundry in the water tub by the alkaline ionized water. In addition, the alkaline ionized water has a sterilizing effect, so that the negative ionized water can be utilized to sterilize the washings in the water bucket and the water bucket.

The alkaline ion water generator described in patent document 1 includes a main body made of sponge and magnesium pellets accommodated in the main body. The alkaline ion water generator is put into a water tub of a washing machine together with laundry. When water is injected into the water bucket, magnesium is eluted from the magnesium pellets in the alkaline ion water generating tool into the water in the water bucket, so that the magnesium chemically reacts with the water in the water bucket to generate alkaline ion water.

In order to effectively wash laundry using magnesium, the amount of magnesium to be added to the water tub may be increased. However, a general washing machine includes a rotatable tub in a water tub, and a general washing operation includes a dehydration process of dehydrating laundry by a dehydration rotation of the tub. On the other hand, the basic ion water generator disclosed in patent document 1 floats in water in a water tub. In such an alkaline ion water generator, when the amount of magnesium pellets to be contained is increased in order to increase the amount of magnesium to be charged into the water tub, the washing tub is eccentrically rotated by the influence of the alkaline ion water generator floating in a state where the weight is increased during the dehydration, and thus it is difficult to smoothly perform the dehydration. In addition, on the surface of the magnesium pellets, an oxide film is formed with contact with water, and thus, it is difficult for magnesium to gradually dissolve out. That is, magnesium is difficult to chemically react with water as it is used. Therefore, it is necessary to remove the oxide film from the surface of the magnesium pellet or replace the magnesium pellet with a new one by regular maintenance.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2017-99486

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a washing machine capable of effectively washing laundry with magnesium while achieving a smooth dehydration process, and improving maintainability of magnesium.

Solution for solving the problem

The present invention is a washing machine comprising: the washing barrel is cylindrical, contains washings, can store washing water and can rotate around a rotation axis passing through the circle center of the washing barrel; a plurality of attachment parts arranged at an inner surface portion of the washing tub so as to be dispersed in a rotation direction around the rotation axis; and a receiving portion detachably attached to the plurality of attaching portions, respectively, and receiving the magnesium pellets.

Further, the present invention is characterized in that the rotation axis extends in a vertical direction or an oblique direction with respect to the vertical direction, the attachment portion has an inlet disposed on a bottom wall side of the washing tub and an outlet disposed at a position higher than the inlet and facing the inside of the washing tub, and a circulation water path for drawing the washing water in the washing tub from the inlet and returning it from the outlet to the inside of the washing tub is configured.

The present invention is characterized in that the housing portion includes an outer housing portion having a first inner space serving as a passage of the washing water flowing in the circulation water passage and a filter for capturing foreign matters from the washing water flowing in the first inner space, and an inner housing portion which is detachable from the outer housing portion and is housed in the first inner space, and has a second inner space serving as a passage of the washing water flowing in the first inner space, and in that the magnesium pellets are housed in the second inner space.

Further, the present invention is characterized in that the second internal space is divided into a plurality of housing chambers arranged in the vertical direction and housing the magnesium pellets, and the housing amount of the magnesium pellets is increased as the housing chamber is positioned at the lower side of each of the housing chambers.

The present invention is characterized in that the proportion of magnesium pellets in each of the accommodation chambers is 70% or less.

Effects of the invention

According to the present invention, in the washing machine, as a dehydrating process, the laundry in the tub is dehydrated by centrifugal force generated by rotation of the tub containing the laundry. The plurality of attachment portions are arranged on an inner surface portion of the washing tub so as to be dispersed in a rotation direction of the washing tub, and each of the attachment portions is detachably attached with a receiving portion for receiving the magnesium pellets. Thereby, the plurality of receiving parts, to which one receiving part is attached at each of the corresponding attaching parts, are also arranged dispersedly on the inner surface part of the washing tub in the rotation direction of the washing tub. Therefore, even if the amount of magnesium pellets added to the washing tub is increased, these magnesium pellets are contained in a small amount and dispersed in the respective containing portions, and therefore the rotation balance of the washing tub is not disturbed. Therefore, the washing tub can be smoothly rotated without being affected by the increased magnesium pellets during the dehydration. Moreover, alkaline ionized water contributing to washing is generated in large quantity by the chemical reaction of the added magnesium pellets with the washing water in the washing tub. Further, even if an oxide film is formed on the surface of the magnesium pellets with contact with the washing water, the user can reattach the accommodating portion to the attaching portion after detaching the accommodating portion from the attaching portion to perform maintenance on the magnesium pellets in the accommodating portion. As a result, the washing can be effectively washed with magnesium while the smooth dehydration process is realized, and the maintainability of magnesium can be improved.

In addition, according to the present invention, the receiving part is attached to a circulation water path that draws the washing water in the washing tub and returns it to the washing tub. Thus, by promoting the chemical reaction between the magnesium pellets accommodated in the accommodating portion and the washing water flowing in the circulation water path, a large amount of alkaline ionized water is generated, and the generated alkaline ionized water is positively sprayed onto the laundry in the washing tub. Therefore, the laundry can be effectively washed with a large amount of alkaline ionized water generated from the magnesium of the magnesium pellets.

In addition, according to the present invention, in the accommodating portion, the magnesium pellet is accommodated in the second inner space of the inner accommodating portion, and the inner accommodating portion is accommodated in the first inner space of the outer accommodating portion. The first and second internal spaces are passages of the washing water flowing in the circulation waterway, so that a large amount of alkaline ionized water can be generated by promoting chemical reaction of the magnesium pellets accommodated in the accommodating portion with the washing water flowing in the first and second internal spaces. Therefore, the laundry can be effectively washed with a large amount of alkaline ionized water generated from the magnesium of the magnesium pellets. Further, since the inner container is detachable from the outer container, the user can detach the container from the attaching portion and separate the outer container and the inner container, and after the magnesium pellets in the inner container are maintained, the container is reattached to the attaching portion in the reverse order from the detachment. This improves the maintainability of magnesium.

Further, according to the present invention, the second internal space for housing the magnesium pellets is divided into a plurality of housing chambers arranged in the up-down direction, and the housing amount of the magnesium pellets is increased as the housing chamber is positioned at the lower side among the respective housing chambers. That is, in the circulation water path for drawing the washing water, the larger the amount of magnesium pellets is in the lower housing chamber in which a large amount of washing water flows vigorously, the smaller the amount of washing water is in the upper housing chamber in which the flow rate of the washing water is smaller and the water potential of the washing water is weak, and the smaller the amount of magnesium pellets is in the lower housing chamber. In this way, in each housing chamber, the magnesium pellets of an appropriate housing amount according to the flow rate and water potential of the washing water in each housing chamber are housed, and therefore, in each housing chamber, the magnesium pellets actively move due to the flow of the washing water. Thus, the magnesium pellets effectively chemically react with the washing water to promote the generation of the alkaline ionized water, so that a large amount of alkaline ionized water can be generated in the entire second inner space. Therefore, the laundry can be effectively washed with a large amount of alkaline ionized water generated from the magnesium of the magnesium pellets.

Further, according to the present invention, the proportion of the magnesium pellets in each of the accommodation chambers is 70% or less, and each of the magnesium pellets actively moves in the accommodation chamber, so that a large contact area with the washing water in the magnesium pellets can be ensured. Accordingly, in each of the accommodating chambers, the generation of the basic ion water is promoted by the respective magnesium pellets effectively performing a chemical reaction with the washing water, and thus a large amount of basic ion water can be generated in the entire second inner space. Therefore, the laundry can be effectively washed with a large amount of alkaline ionized water generated from the magnesium of the magnesium pellets.

Drawings

Fig. 1 is a schematic longitudinal sectional right side view of a washing machine in accordance with an embodiment of the present invention.

Fig. 2 is a perspective view of a guide cover and a housing part included in the washing machine.

Fig. 3 is an exploded perspective view of the accommodating portion.

Fig. 4 is a front view of the housing portion included in the housing portion.

Fig. 5 is a sectional view taken from A-A of fig. 4.

Fig. 6 is a B-B cross-sectional view of fig. 4.

Fig. 7 is a perspective view of the guide cover and the accommodating portion in the middle of attachment.

Fig. 8 is a perspective view of the guide cover and the accommodating portion in an attached state.

Fig. 9 is a perspective view of a longitudinal section including a part for a main part of the washing machine.

Fig. 10 is an enlarged view of a main portion of fig. 9.

Fig. 11 is a perspective view of a longitudinal section including a part of a main part of a washing machine according to a modification.

Description of the reference numerals

1: a washing machine; 4: a washing tub; 4B: a bottom wall; 8: a guide cover; 9: a housing part; 29: a circulating waterway; 29A: an inlet; 29B: an outlet; 31: an outer accommodating portion; 31Q: a first internal space; 32: an inner accommodating part; 32N: a second internal space; 32Q: a housing chamber; 33: a filter; j: an axis of rotation; l: washing; m: magnesium pills; p: circumferential direction; z: up and down direction; z2: and the lower side.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Fig. 1 is a schematic longitudinal sectional right side view of a washing machine in accordance with an embodiment of the present invention. The direction perpendicular to the paper surface of fig. 1 is referred to as a left-right direction X of the washing machine 1, the left-right direction in fig. 1 is referred to as a front-rear direction Y of the washing machine 1, and the up-down direction in fig. 1 is referred to as an up-down direction Z of the washing machine 1. Of the left-right directions X, the back side of the paper surface of fig. 1 is referred to as left side X1, and the front side of the paper surface of fig. 1 is referred to as right side X2. Of the front-rear directions Y, the left side in fig. 1 is referred to as front side Y1, and the right side in fig. 1 is referred to as rear side Y2. Of the vertical directions Z, the upper side is referred to as an upper side Z1, and the lower side is referred to as a lower side Z2.

The washing machine 1 includes: a case 2 constituting a housing of the washing machine 1; a water tub 3 accommodated in the cabinet 2 and capable of storing washing water; a washing tub 4 accommodated in the water tub 3; a rotary wing 5 accommodated in the washing tub 4; a motor 6 for generating a driving force for rotating the washing tub 4 and the rotation wing 5; and a transmission mechanism 7 for transmitting the driving force of the motor 6 to the washing tub 4 and the rotary wing 5. The washing machine 1 further includes: a guide cover 8 disposed in the washing tub 4 for circulating the washing water; and a receiving portion 9 that receives the magnesium pellets M and is attached to the guide cover 8. The washing water is tap water or water in which a detergent or the like is dissolved in tap water.

The case 2 is made of metal, for example, and is formed in a box shape. An opening 15 for communicating the inside and outside of the case 2 is formed in the upper surface 2A. A door 16 for opening and closing the opening 15 is provided on the upper surface 2A. An operation portion 17 constituted by a liquid crystal operation panel or the like is provided in a region around the opening 15 of the upper surface 2A. By operating the operation unit 17, the user of the washing machine 1 can freely select the operation conditions of the washing operation performed by the washing machine 1, instruct the washing machine 1 to start or stop the washing operation, and the like.

The water tub 3 is made of, for example, resin, and is formed in a bottomed cylindrical shape. The water tub 3 has: a substantially cylindrical circumferential wall 3A disposed in the up-down direction Z; a bottom wall 3B closing the hollow portion of the circumferential wall 3A from the lower side Z2; and an annular wall 3C protruding toward the center of the circumferential wall 3A while wrapping the upper end edge of the circumferential wall 3A. An inlet/outlet 18 is formed in the annular wall 3C and communicates with the hollow portion of the circumferential wall 3A from the upper side Z1. The inlet/outlet 18 is placed opposite to and in communication with the opening 15 of the housing 2 from the lower side Z2. The annular wall 3C is provided with a door 19 for opening and closing the inlet 18. The bottom wall 3B is formed in a circular plate shape extending substantially horizontally, and a through hole 3D penetrating the bottom wall 3B is formed at the center position of the bottom wall 3B.

A water supply path 20 connected to a tap of tap water is connected to the annular wall 3C of the water tub 3 from the upper side Z1, and tap water is supplied from the water supply path 20 into the water tub 3. A water supply valve 21, which is an example of a water supply unit, is provided midway in the water supply channel 20. The water supply valve 21 is opened and closed to start or stop water supply. The drain passage 22 is connected to the bottom wall 3B of the water tub 3 from the lower side Z2, and water in the water tub 3 is discharged from the drain passage 22 to the outside. A drain valve 23 as an example of a drain unit is provided midway in the drain passage 22. The drain valve 23 is opened and closed to start or stop the drainage.

The washing tub 4 is made of metal, for example, and is formed in a bottomed cylindrical shape smaller than the water tub 3 by one turn, and can accommodate the laundry L therein. The rotary tub 4 has a substantially cylindrical circumferential wall 4A disposed in the up-down direction Z, and a bottom wall 4B provided at the lower end of the tub 4 and closing the hollow portion of the circumferential wall 4A from the lower side Z2. The boundary portion between the circumferential wall 4A and the bottom wall 4B, that is, the lower end portion of the circumferential wall 4A and the outer peripheral portion of the bottom wall 4B may be made of resin (see fig. 9 described later).

The inner peripheral surface of the circumferential wall 4A and the upper surface of the bottom wall 4B are inner surface portions of the washing tub 4. A gateway 24 is formed at the upper end of the washing tub 4, which is surrounded by the upper end of the inner peripheral surface of the circumferential wall 4A. The inlet/outlet 24 exposes the hollow portion of the circumferential wall 4A to the upper side Z1, and communicates with the inlet/outlet 18 of the water tub 3 from the lower side Z2. The user brings laundry L into and out of the washing tub 4 from the upper side Z1 through the opened opening 15, the inlet and outlet 18, and the inlet and outlet 24.

The washing tub 4 is coaxially accommodated in the water tub 3. The washing tub 4 in a state of being accommodated in the water tub 3 is rotatable about a rotation axis J extending in the up-down direction Z through a center of the washing tub 4. The rotation axis J in the present embodiment extends strictly in the vertical direction, but may extend in an oblique direction with respect to the vertical direction. As an example, the tilt direction is a direction that is shifted toward the front side Y1 as approaching the upper side Z1. The rotation axis J also passes through the center of the water tub 3. The rotation direction of the washing tub 4 coincides with the circumferential direction P around the rotation axis J. Hereinafter, a radial direction around the rotation axis J is referred to as a radial direction R, a side closer to the rotation axis J is referred to as a radial direction inner side R1, and a side farther from the rotation axis J is referred to as a radial direction outer side R2. A plurality of through holes 4C are formed in the circumferential wall 4A and the bottom wall 4B of the washing tub 4, and washing water in the water tub 3 can flow between the water tub 3 and the washing tub 4 via the through holes 4C. Thereby, the washing tub 4 can store the washing water, and the water level in the water tub 3 is identical to the water level in the washing tub 4.

A ring-shaped balancer 25 along the circumferential direction P is attached to an upper end portion of the inner circumferential surface of the circumferential wall 4A. The balancer 25 reduces vibration of the washing tub 4 during rotation, and a liquid such as brine for reducing vibration is contained in the cavity 25A inside the balancer 25.

The bottom wall 4B of the washing tub 4 is formed in a disk shape extending substantially parallel to the bottom wall 3B of the water tub 3 at an interval from the upper side Z1. A through hole 4D penetrating the bottom wall 4B in the up-down direction Z is formed at a center position of the bottom wall 4B which coincides with the rotation axis J. The bottom wall 4B is provided with a tubular support shaft 26 protruding downward Z2 along the rotation axis J while surrounding the through hole 4D. The support shaft 26 is inserted through the through hole 3D of the bottom wall 3B of the water tub 3, and the lower end portion of the support shaft 26 is located below the bottom wall 3B by Z2.

The rotary wing 5 is a so-called pulsator, and is formed in a disk shape centering on the rotation axis J, and is disposed on the bottom wall 4B in the washing tub 4. A plurality of raised portions 5A, which are raised upward Z1 and are radially arranged around the rotation axis J, are provided on the upper surface of the rotation wing 5 facing the inlet/outlet 24 of the washing tub 4. A plurality of back leaves 5B radially arranged around the rotation axis J are provided on the lower surface of the rotation wing 5. The lower end portion of the back blade 5B having the rotation wing 5 disposed in the inner space of the washing tub 4 is referred to as a space S. The rotary wing 5 is provided with a rotary shaft 27 extending from the center thereof to the lower side Z2 along the rotation axis J. The rotation shaft 27 is inserted through the hollow portion of the support shaft 26, and the lower end portion of the rotation shaft 27 is located at the lower side Z2 than the bottom wall 3B of the water tub 3.

The motor 6 is an electric motor such as a variable frequency motor. The motor 6 is disposed at the lower side Z2 of the water tub 3 in the cabinet 2. The motor 6 has an output shaft 28 that rotates around a rotation axis J, and generates a driving force to be output from the output shaft 28.

The transmission mechanism 7 is interposed between the lower end portions of the support shaft 26 and the rotation shaft 27, respectively, and the upper end portion of the output shaft 28 protruding from the motor 6 to the upper side Z1. The transmission mechanism 7 selectively transmits the driving force output from the output shaft 28 by the motor 6 to one or both of the support shaft 26 and the rotation shaft 27. As the transmission mechanism 7, a known mechanism can be used. When the driving force from the motor 6 is transmitted to the support shaft 26, the washing tub 4 is rotated in the circumferential direction P by receiving the driving force of the motor 6. When the driving force from the motor 6 is transmitted to the rotation shaft 27, the rotor 5 receives the driving force of the motor 6 and rotates in the circumferential direction P.

There are a plurality of guide caps 8, and in the present embodiment, three guide caps 8 are arranged on the inner peripheral surface of the circumferential wall 4A so as to be dispersed in the circumferential direction P (see fig. 9). The guide covers 8 are preferably arranged at equal intervals in the circumferential direction P. Each guide cover 8 is tubular extending upward Z1 from the lower end of the circumferential wall 4A of the washing tub 4, and is made of, for example, resin, and has a circular arc shape, for example, convexly curved inward in the radial direction R1 in a plan view. The upper end of the guide cover 8 is disposed at a height position up to the front of the balancer 25. The guide cover 8 is fixed to the circumferential wall 4A so as to cover a part of the circumferential wall 4A from the radially inner side R1. Thus, a circulation flow path 29 extending upward Z1 from the lower end of the circumferential wall 4A to the lower end of the circumferential wall 4A in the washing tub 4 is formed between the guide cover 8 and the circumferential wall 4A. That is, the guide cover 8 constitutes the circulation flow path 29. Since there are a plurality of guide caps 8, a plurality of circulation passages 29 are provided, and in the present embodiment, three circulation passages 29 are distributed and arranged at equal intervals in the circumferential direction P.

The lower end of the circulation flow path 29 is connected to a space S in which the back vane 5B of the rotary vane 5 is disposed in the inner space of the washing tub 4 from the radially outer side R2 as an inlet 29A of the circulation flow path 29. That is, the inlet 29A is disposed on the bottom wall 4B side of the washing tub 4. Referring to fig. 2, the guide cover 8 is symmetrical with respect to the center in the right-left direction in fig. 2 in the circumferential direction P. An opening 8A penetrating the guide cover 8 in the radial direction R is formed midway of the guide cover 8 in the up-down direction Z. The opening 8A is, for example, rectangular and long in the vertical direction Z. The portion of the circulation flow path 29 exposed from the opening 8A to the radially inner side R1 is an outlet 29B, and the outlet 29B is disposed at a position higher than the inlet 29A and faces the inside of the washing tub 4.

The guide cover 8 is provided with an upper positioning portion 8B extending horizontally in the circumferential direction P while wrapping the upper edge of the opening 8A. A concave portion 8C recessed radially outward R2 and upward Z1 is formed in the center of the upper positioning portion 8B in the circumferential direction P. A first lateral positioning portion 8D in a prismatic shape extending in the up-down direction Z, a second lateral positioning portion 8E in a prismatic shape protruding from the first lateral positioning portion 8D toward the radial outside R2 and the opening 8A and extending in the up-down direction Z, and a first support groove 8F extending toward the radial outside R2 and the lower side Z2 in the vicinity of the lower edge of the opening 8A are provided on the edge of one side in the circumferential direction P of the opening 8A and the left edge in fig. 2. A third lateral positioning portion 8G of a prismatic shape extending long in the up-down direction Z, a fourth lateral positioning portion 8H of a prismatic shape disposed so as to protrude inward in the radial direction outer side R2 and the opening 8A than the third lateral positioning portion 8G and extending long in the up-down direction Z, and a second support groove 8J extending toward the radial direction outer side R2 and the lower side Z2 in the vicinity of the lower edge of the opening 8A are provided on the other edge of the opening 8A in the circumferential direction P and the right edge in fig. 2. The upper end portions of the first support groove 8F and the second support groove 8J are exposed from the surface of the radially inner side R1 of the guide cover 8.

The housing 9 has an overall shape that fits into the opening 8A of the guide cover 8, specifically, a box shape that is flat in the radial direction R and long in the up-down direction Z. The housing portion 9 includes a box-shaped outer housing portion 31 constituting a housing thereof, and a box-shaped inner housing portion 32 housed in the outer housing portion 31. The housing 8 is symmetrical with respect to the center in the circumferential direction P. The same applies to the outer housing 31 and the inner housing 32.

The outer housing portion 31 has a rectangular plate-shaped front wall 31A substantially conforming to the opening 8A when viewed from the radially inner side R1, and a top wall 31B extending from an upper end edge of the front wall 31A to the radially outer side R2. The outer housing 31 further includes: a first side wall 31C extending from an edge on one side in the circumferential direction P, the left edge in fig. 2, to the radial outside R2; and a second side wall 31D extending from the other edge in the circumferential direction P, the right edge in fig. 2, to the radial outer side R2.

A plurality of inner openings 31E penetrating the outer housing portion 31 in the radial direction R are formed in the front wall 31A in a uniformly aligned manner. In the present embodiment, twelve substantially rectangular inner openings 31E are arranged at equal intervals in six rows and two columns in the vertical direction and are formed in a distributed manner throughout the front wall 31A. The entire area of each inner opening 31E is covered with a sheet-like filter 33 made of, for example, a mesh or the like. In each of the drawings, for convenience of explanation, the filter 33 is transparent so that the inside of the outer housing portion 31 can be seen through the inner opening 31E.

The top wall 31B is a plate-like member long in the circumferential direction P, and extends between the upper ends of the first side wall 31C and the second side wall 31D. Both end edges of the top wall 31B in the circumferential direction P are formed in a step shape approaching each other as approaching the radially outer side R2. At a central portion in the circumferential direction P of the upper surface of the top wall 31B, there is provided: a grip 31F disposed close to the front surface wall 31A and protruding toward the upper side Z1; a concave portion 31G disposed radially outward R2 of the grip 31F and recessed toward the lower side Z2; and a protrusion 31H disposed radially outward R2 of the recess 31G and protruding upward Z1.

The first side wall 31C is plate-shaped long in the up-down direction Z, and is formed to be bent stepwise along the end edge of the top wall 31B in the circumferential direction P. The first side wall 31C has a first step 31J closest to the front surface wall 31A and a second step 31K disposed radially outward R2 of the first step 31J and toward the center of the outer accommodating portion 31. The second side wall 31D is plate-shaped long in the up-down direction Z, and is formed to be bent stepwise along the end edge of the top wall 31B in the circumferential direction P. The second side wall 31D has a third step 31L closest to the front surface wall 31A and a fourth step 31M disposed radially outward R2 of the third step 31L and toward the center of the outer accommodating portion 31.

A cylindrical first support shaft 31N is provided in a region of the first side wall 31C closest to the lower end portion of the front surface wall 31A. A cylindrical second support shaft 31P is provided in a region of the second side wall 31D closest to the lower end portion of the front surface wall 31A. The first support shaft 31N and the second support shaft 31P are provided to protrude outward in the circumferential direction P on the outer housing portion 31.

Fig. 3 is an exploded perspective view of the accommodating portion 9. The outer housing portion 31 has a first inner space 31Q that is flat in the radial direction R and long in the up-down direction Z. The first inner space 31Q is divided by the front wall 31A from the radially inner side R1, by the top wall 31B from the upper side Z1, and by the first side wall 31C and the second side wall 31D from both sides in the circumferential direction P. The first side wall 31C further has a first extension portion 31R extending from the second step portion 31K toward the second side wall 31D. The second side wall 31D further has a second extension portion 31S extending from the fourth step portion 31M toward the first side wall 31C. The first extension portion 31R and the second extension portion 31S are band-shaped extending in the up-down direction Z and are arranged parallel to each other. The outer housing portion 31 has: an outer opening 31T that is partitioned between the first extension portion 31R and the second extension portion 31S and opens the first inner space 31Q to the radial outside R2; and a lower opening 31U that is partitioned by the lower ends of the front wall 31A, the first side wall 31C, and the second side wall 31D, and opens the first internal space 31Q to the lower side Z2. The lower end of the outer opening 31T is in a connected state with the lower opening 31U.

The inner housing portion 32 has a box shape substantially corresponding to the first inner space 31Q of the outer housing portion 31, is flat in the radial direction R, and is long in the up-down direction Z. The inner housing part has: the front wall 32A has a rectangular plate shape longer in the up-down direction Z; a rectangular plate-shaped rear wall 32B disposed radially outward R2 of the front wall 32A and having a width smaller than the front wall 32A; a lower wall 32C provided between the lower ends of the front wall 32A and the rear wall 32B; and an upper wall 32D provided between the upper ends of the front wall 32A and the rear wall 32B. The outer accommodating portion 32 also has a first side wall 32E on the left side in fig. 3 and a second side wall 32F on the right side in fig. 3 on one side in the circumferential direction P.

A first front opening 32G, a second front opening 32H, a third front opening 32J, and a fourth front opening 32K penetrating the front wall 32A in the radial direction R are formed in the front wall 32A in this order from the lower side Z2. The front openings are elongated slits. In the present embodiment, twelve first front openings 32G are arranged in six rows and two columns in the left-right symmetry in fig. 3, and six second front openings 32H, third front openings 32J, and fourth front openings 32K are arranged in the left-right symmetry in fig. 3, respectively. A plurality of rear surface openings 32L formed by elongated slits penetrating the rear surface wall 32B in the radial direction R are formed in the entire area of the rear surface wall 32B (see fig. 6 described later).

The lower wall 32C is plate-shaped long in the circumferential direction P, and also spans between the lower ends of the first side wall 32E and the second side wall 32F. Both end edges of the lower wall 32C in the circumferential direction P are formed in a step shape that approaches each other as approaching the radially outer side R2. A plurality of lower openings 32M penetrating the lower wall 32C in the up-down direction Z are formed in the lower wall 32C. The lower openings 32M are slits connected to each of the lower ends of the six first front openings 32G in the lower stage.

The upper wall 32D is plate-shaped and long in the circumferential direction P, and also extends between the upper ends of the first side wall 32E and the second side wall 32F. Both end edges of the upper wall 32D in the circumferential direction P are formed in a step shape that approaches each other as approaching the radially outer side R2.

The first side wall 32E is plate-shaped long in the up-down direction Z, and is formed to be bent stepwise along one side edge of the circumferential direction P and the left end edge in fig. 3 of each of the upper wall 32D and the lower wall 32C in the circumferential direction P. The second side wall 32F is plate-shaped long in the up-down direction Z, and is formed to be bent stepwise along the other side edge of the peripheral direction P of each of the upper wall 32D and the lower wall 32C in the peripheral direction P, and the right end edge in fig. 3.

The inner housing portion 32 has a second inner space 32N surrounded by the front wall 32A, the rear wall 32B, the lower wall 32C, the upper wall 32D, and the first side wall 32E and the second side wall 32F. The second internal space 32N is flat in the radial direction R and longer in the up-down direction Z.

Fig. 4 is a front view of the inner housing portion 32 as seen from the radially inner side R1. Fig. 5 is a sectional view taken from A-A of fig. 4. Referring to fig. 5, the housing portion 32 includes a plurality of partition plates 32P arranged in the up-down direction Z and disposed in the second internal space 32N. The second internal space 32N is divided into a plurality of storage chambers 32Q arranged in the up-down direction Z by these partition plates 32P. In this embodiment, the second internal space 32N is divided into four accommodation chambers 32Q by providing three partition plates 32P. The four accommodating chambers 32Q are divided into a first accommodating chamber 32QA at the lowermost, a second accommodating chamber 32QB located above and adjacent to the first accommodating chamber 32QA, a third accommodating chamber 32QC located above and adjacent to the second accommodating chamber 32QB, and a fourth accommodating chamber 32QD located above and adjacent to the third accommodating chamber 32QC at the uppermost. The inner housing portion 32 further has an inclined wall 32R inclined to the radially outer side R2 and the upper side Z1 and connecting the back wall 32B with the lower wall 32C.

Fig. 6 is a B-B cross-sectional view of fig. 4. The upper side Z1 of the inclined wall 32R in the first housing chamber 32QA, the second housing chamber 32QB, the third housing chamber 32QC, and the fourth housing chamber 32QD have the same cross section in plan view. However, the first accommodation chamber 32QA is largest in the vertical direction Z, and the second accommodation chamber 32QB, the fourth accommodation chamber 32QD, and the third accommodation chamber 32QC are sequentially smaller, so that the volumes of the respective accommodation chambers 32Q are also sequentially smaller (see fig. 5). A plurality of communication ports 32S penetrating the partition plate 32P in the up-down direction Z are formed in the partition plate 32P constituting the boundary of the accommodation chambers 32Q adjacent in the up-down direction Z. These communication ports 32S are slits each connected to one of the rear surface openings 32L.

A large number of magnesium pellets are accommodated in each accommodation chamber 32Q in the second internal space 32N. The magnesium pellets M are magnesium particles, and the particle diameter of the magnesium pellets M in the new product is set to a size of about several mm that the magnesium pellets M cannot pass through any one of the first front opening 32G, the second front opening 32H, the third front opening 32J, the fourth front opening 32K, the communication port 32S, and the back opening 32L. Further, the larger the accommodating chamber 32Q of the lower side Z2, the larger the accommodating amount of the magnesium pellets M in the accommodating chamber 32Q. Therefore, the magnesium bolus M in the lowermost first accommodation chamber 32QA is most accommodated, and the magnesium bolus M in the uppermost fourth accommodation chamber 32QD is least accommodated. In each of the accommodation chambers 32Q, the proportion of the volume of all the magnesium pellets M to the volume of the accommodation chamber 32Q is 70% or less.

Such an inner housing portion 32 may be detachable from the outer housing portion 31. Specifically, as shown in fig. 3, the user places the inner housing portion 32 on the lower side Z2 of the outer housing portion 31 and inserts the inner housing portion 32 into the first inner space 31Q from the lower opening 31U of the outer housing portion 31. At this time, the first side wall 32E and the second side wall 32F of the inner housing portion 32 are guided by the first side wall 31C and the second side wall 31D of the outer housing portion 31, respectively, whereby the inner housing portion 32 slides smoothly to be inserted into the first inner space 31Q. When the entire inner housing portion 32 is housed in the first inner space 31Q, the attachment of the inner housing portion 32 to the outer housing portion 31 is completed, and the housing portion 9 is completed. The user can pull the entire inner housing portion 32 out of the first inner space 31Q from the lower opening 31U in the reverse order from the time of attachment, and thereby can disengage the inner housing portion 32 from the outer housing portion 31. The inner housing portion 32 may be assembled to the outer housing portion 31 by an engagement structure using a claw or the like, not limited to such a sliding structure. Further, the outer housing portion 31 and the inner housing portion 32 may be provided with positioning portions such as claws that position the outer housing portion 31 so as not to separate the attached inner housing portion 32 from the outer housing portion.

Referring also to fig. 2, the completed housing portion 9 has the inner portion 32 in a state in which the first front opening 32G, the second front opening 32H, the third front opening 32J, and the fourth front opening 32K face any one of the inner openings 31E of the outer housing portion 31 from the radially outer side R2. In the inner housing portion 32, the rear surface opening 32L is exposed from the outer opening 31T of the outer housing portion 31 to the radial outer side R2, and the lower opening 32M is exposed from the lower opening 31U of the outer housing portion 31 to the lower side Z2 (see fig. 10 described later).

The receiving portion 9 thus completed is detachably attached to each of the plurality of guide hoods 8, in other words, the plurality of circulation water paths 29. Specifically, as shown in fig. 2, the user disposes one accommodation portion 9 in a completed state on each of the radially inner sides R1 of the guide covers 8, and inserts the first support shaft 31N and the second support shaft 31P in the outer accommodation portion 31 of each accommodation portion 9 into the first support groove 8F and the 2 nd support groove 8J of the corresponding guide cover 8 from the radially inner side R1 and the upper side Z1, respectively.

In a state where the first support shaft 31N reaches the lower end of the first support groove 8F and the second support shaft 31P reaches the lower end of the second support groove 8J (see fig. 7), the user rotates the housing portion 9 about the first support shaft 31N and the second support shaft 31P toward the radial outside R2. Thereby, the entire accommodating portion 9 is fitted into the opening 8A of the guide cover 8. At this time, the protrusion 31H on the top wall 31B of the outer housing portion 31 of the housing portion 9 contacts the lower surface of the upper positioning portion 8B of the guide cover 8 and moves radially outward R2, whereby the top wall 31B elastically deforms so as to flex toward the lower side Z2.

Then, when the projection 31H is fitted into the groove 8K (see fig. 10) of the lower surface of the upper positioning portion 8B from the lower side Z2, the top wall 31B returns to its original shape. In the outer accommodating portion 31 of the accommodating portion 9, the first step portion 31J and the second step portion 31K of the first side wall 31C are respectively in contact with the first lateral positioning portion 8D and the second lateral positioning portion 8E of the opening 8A from the radially inner side R1, and the third step portion 31L and the fourth step portion 31M of the second side wall 31D are respectively in contact with the third lateral positioning portion 8G and the fourth lateral positioning portion 8H of the opening 8A from the radially inner side R1. Thereby, as shown in fig. 8, the attachment of the housing 9 to the guide cover 8, that is, the circulation water channel 29 is completed. As described above, each guide cover 8 is an example of an attachment portion to each of which one accommodation portion 9 is detachably attached.

As shown in fig. 9 and 10, the housing 9 attached to the circulation water channel 29 is exposed to the radially inner side R1 from the opening 8A of the guide cover 8, that is, the outlet 29B of the circulation water channel 29 in a substantially vertical posture and long in the up-down direction Z. In the housing portion 9, the first internal space 31Q of the outer housing portion 31 and the second internal space 32N of the inner housing portion 32 in the first internal space 31Q become a part of the circulation water path 29. On the front wall 31A of the outer housing portion 31, all the inner openings 31E are exposed from the outlet 29B to the radially inner side R1 and face the inner space of the washing tub 4. Further, the grip 31F of the outer housing 31 is fitted into the concave portion 8C of the guide cover 8. A gap into which a finger of a user is inserted is secured on the upper side Z1 of the grip 31F in this state. Therefore, the user pulls out the grip 31F toward the radially inner side R1, and can disengage the housing 9 from the circulation water channel 29 in the reverse order from the attachment.

The washing machine 1 further includes a control unit 35 (see fig. 1) which is constituted by a microcomputer and is incorporated in the casing 2. The motor 6, the transmission mechanism 7, the operation unit 17, the water supply valve 21, and the drain valve are electrically connected to the control unit 35. The control unit 35 controls the duty ratio of the voltage applied to the motor 6 to control the motor 6 to rotate at a desired rotation speed. The control unit 35 controls the transmission mechanism 7 to switch the transmission target of the driving force of the motor 6 to one or both of the support shaft 26 and the rotation shaft 27. When the user operates the operation section 17 to select an operation condition or the like, the control section 35 receives the selection. The control unit 35 controls opening and closing of the water supply valve 21 and the drain valve 23.

The control unit 35 controls the motor 6, the transmission mechanism 7, the water supply valve 21, and the drain valve 23 to perform a washing operation. As an example, the washing operation includes: a soaking and washing process, wherein the washed matter L is soaked in the washing water in the washing barrel 4 for a set time in advance; a formal cleaning process, namely formally cleaning the washing L after the immersion cleaning process; a rinsing process of rinsing the laundry L after the formal cleaning process; and a dehydrating process for dehydrating the laundry L after the rinsing process.

The control unit 35 first opens the water supply valve 21 to supply water to the water tub 3 and the washing tub 4 during the rinsing process. Thereby, the washing water can be stored in the washing tub 4. When the water level in the washing tub 4 rises to a higher soak level than the upper end of the laundry L in the washing tub 4, the control part 35 stops the water supply by closing the water supply valve 21.

Then, the control unit 35 rotates the rotor 5. Then, referring to fig. 10, the washing water in the space S on the bottom wall 4B side in the washing tub 4 is pushed radially outward R2 by the back blades 5B of the rotating blades 5, and is sent into the inlet 29A of each circulation water channel 29, and each circulation water channel 29 flows upward Z1 (see thick dotted arrow). In the housing 9 attached to each circulation water path 29, the first internal space 31Q of the outer housing 31 serves as a passage for the washing water flowing through the circulation water path 29, and the second internal space 32N of the housing 32 in the first internal space 31Q serves as a passage for the washing water flowing through the first internal space 31Q.

Specifically, the washing water fed from the inlet 29A to the circulation water path 29 passes through the lower opening 32M of the inner housing portion 32 and the communication port 32S of each partition plate 32P, and rises to the first housing chamber 32QA, the second housing chamber 32QB, the third housing chamber 32QC, and the fourth housing chamber 32QD in order. A part of the washing water flowing through the first housing chamber 32QA flows into the first inner space 31Q of the outer housing portion 31 from the first front opening 32G in the front wall 32A of the inner housing portion 32, and flows out to the radially inner side R1 from the outlet 29B of the circulation water path 29 through the inner opening 31E located near the first front opening 32G in the front wall 31A of the outer housing portion 31 (see arrow W1 of a thick solid line).

Further, a part of the washing water flowing in the second housing chamber 32QB flows into the first internal space 31Q of the outer housing portion 31 from the second front opening 32H in the front wall 32A, passes through the internal opening 31E in the front wall 31A located in the vicinity of the second front opening 32H, and flows out from the outlet 29B to the radially inner side R1 (see arrow W2 of a thick solid line). In addition, a part of the washing water flowing in the third accommodation chamber 32QC flows into the first internal space 31Q of the outer accommodation portion 31 from the third front opening 32J in the front wall 32A, passes through the internal opening 31E in the front wall 31A located in the vicinity of the third front opening 32J, and flows out from the outlet 29B to the radially inner side R1 (see arrow W3 of a thick solid line). A part of the washing water flowing through the fourth housing chamber 32QD flows into the first internal space 31Q of the outer housing 31 from the fourth front opening 32K in the front wall 32A, passes through the internal opening 31E located near the fourth front opening 32K in the front wall 31A, and flows out from the outlet 29B to the radially inner side R1 (see an arrow W4 of a thick solid line).

As described above, the circulation water path 29 is a flow path for drawing the washing water in the washing tub 4 from the inlet 29A and returning it from the outlet 29B into the washing tub 4. When the washing water flows out of the first internal space 31Q through the internal opening 31E and the outlet 29B, the filter 33 covering the internal opening 31E captures foreign matters such as lint from the washing water and stores the same in the first internal space 31Q. After the washing water returned from the outlet 29B into the washing tub 4 is sprayed from the upper side Z1 onto the laundry L in the washing tub 4, the washing water flows down into the space S, and is circulated again so as to be sprayed onto the laundry L through the circulation water channel 29. A part of the washing water flowing through each of the storage chambers 32Q in the circulation water path 29 may flow to the radial outside R2 through the rear surface opening 32L of the rear surface wall 32B of the inner storage portion 32 and the outer opening 31T of the outer storage portion 31 in this order, and may flow out from the through hole 4C of the circumferential wall 4A of the washing tub 4 to the space between the water tub 3 and the washing tub 4 (see the thick solid arrow W5). The washing water flowing out between the water tub 3 and the washing tub 4 returns to the space S through the through hole 4C (see fig. 1) of the bottom wall 4B of the washing tub 4.

The washing water thus circulated chemically reacts with magnesium eluted from the magnesium pellets M received in each of the receiving chambers 32Q while passing through the first receiving chamber 32QA, the second receiving chamber 32QB, the third receiving chamber 32QC, and the fourth receiving chamber 32QD, that is, each of the receiving chambers 32Q, of the inner receiving portion 32 of the receiving portion 9, respectively. As described above, in detail about the chemical reaction between magnesium and the washing water, the pH of the washing water in the storage chamber 32Q increases by the chemical reaction, and is thereby modified into alkaline ionized water. Then, a large portion of the washing water in the washing tub 4 is alkalized according to the circulation of the washing water, and the laundry L in the washing tub 4 is soaked in a large amount of alkaline ion water. As with detergents, alkaline ionized water has an action of decomposing oil components, specifically, acidic sebum dirt and the like, and thus the dirt is removed from the laundry L in the washing tub 4 by the alkaline ionized water. Further, the laundry L is agitated by the raised portions 5A of the rotating wings 5, and therefore dirt of the laundry L can be mechanically removed. During the pickling process, the rotor 5 rotates 1 revolution per 5 minutes for 20 seconds. When a predetermined pickling time (for example, 1 hour) has elapsed after the start of the circulation of the washing water accompanied by the rotation of the rotor 5, the control unit 35 ends the pickling process.

Next, the control unit 35 starts the main cleaning process and rotates the rotor 5. However, the rotation frequency of the rotating wings 5 during the main washing is higher than that during the immersion washing. In the main washing process, the washing water circulates with the rotation of the rotary wing 5, and the alkaline ion water sprays the laundry L, as in the immersion washing process. Further, the laundry L is agitated by the raised portions 5A of the rotating wings 5, so that dirt of the laundry L can be mechanically removed. The washing agent may be automatically introduced into the washing tub 4 before the start of the washing operation, that is, before the start of the immersing process, or may be manually introduced by the user. In this case, the washing water contains a detergent component, and dirt of the laundry L is chemically decomposed by the detergent component during the main washing process. When a predetermined washing time has elapsed from the start of circulation of the washing water accompanied by the rotation of the rotation wings 5, the control unit 35 stops the rotation wings 5, and opens the drain valve 23 to drain water from the water tub 3 and the washing tub 4, thereby ending the main washing process. By using alkaline ionized water, a higher cleaning power can be obtained even if the amount of the detergent is reduced.

Next, the control section 35 starts the rinsing process. Specifically, the control unit 35 opens the water supply valve 21 to supply water to the water tub 3 and the washing tub 4, and stores the washing water to a predetermined rinse water level. Then, the control unit 35 rotates the rotor 5. In the rinsing process, as in the immersing process, the washing water circulates with the rotation of the rotary wing 5, and the alkaline ion water is sprayed to the laundry L, the water tub 3, and the washing tub 4. In the rinsing process, the laundry L is also washed with alkaline ionized water having an increased pH value by stirring of the rotary wing 5, and the laundry L, the water tub 3, and the washing tub 4 are sterilized by negative ions or the like contained in the alkaline ionized water. When a predetermined rinsing time elapses from the start of circulation of the washing water accompanied by the rotation of the rotation wings 5, the control unit 35 stops the rotation wings 5, and opens the drain valve 23 to drain water from the water tub 3 and the washing tub 4, thereby ending the main rinsing process. The rinsing process may also be carried out a plurality of times.

Next, the control section 35 starts the dehydration process. Specifically, the control unit 35 dehydrates and rotates the washing tub 4 in a state where the drain valve 23 is opened. The rotational speed of the washing tub 4 during the spinning is gradually increased, and eventually, for example, the highest rotational speed of 800rpm is reached, and then the voltage applied to the motor 6 is stopped, whereby the washing tub 4 performs the inertial rotation. The laundry L in the washing tub 4 is dehydrated by centrifugal force generated by the dehydration rotation of the washing tub 4. The water exuded from the laundry L by the dehydration is discharged to the outside of the machine from the water discharge path 22. When the inertial rotation of the washing tub 4 is stopped, the control part 35 ends the dehydration process. The dehydration process may be performed at the end of the washing operation as a final dehydration process or immediately after the end of the main washing process or the like as an intermediate dehydration process.

As described above, the plurality of guide caps 8 are arranged dispersedly on the inner surface portion of the washing tub 4 along the circumferential direction P of the washing tub 4, and the accommodating portion 9 accommodating the magnesium pellets M is detachably attached to each guide cap 8. Thereby, the plurality of receiving parts 9, to which one receiving part 9 is attached to each of the corresponding guide covers 8, are also arranged on the inner surface portion of the washing tub 4 in a dispersed manner along the circumferential direction P of the washing tub 4. Therefore, even if the amount of magnesium pellets M added to the washing tub 4 is increased, these magnesium pellets M are stored in a small amount and dispersed in the respective storage portions 9, and therefore the rotation balance of the washing tub 4 is not disturbed. Therefore, the washing tub 4 can be smoothly rotated without being affected by the increased magnesium shot M during the dehydration. Then, in the pickling process or the like, alkaline ionized water contributing to the washing is generated in large quantity by the chemical reaction of the added magnesium pellets M with the washing water in the washing tub 4.

Further, when an oxide film of, for example, black is formed on the surface of the magnesium pills M with contact with the washing water, the magnesium pills M are difficult to chemically react with the washing water. In addition, when the magnesium pellets are reduced to some extent by repeated use, the magnesium pellets M reach the service life, and thus it is necessary to replace the magnesium pellets M with new ones. In these cases, even if a repair person is not required, the user can detach the housing 9 from the guide cover 8 to maintain the magnesium pellets M in the housing 9, and then reattach the housing 9 to the guide cover 8. As a specific example of maintenance, if the user takes out the inner housing part 32 from the housing part 9 and dips it into the aqueous citric acid solution, the magnesium bolus M is refreshed by removing the oxide film from the surface. In this way, when the single inner container 32 is immersed in the aqueous citric acid solution, it is possible to use a small amount of aqueous citric acid solution as compared with the case where the aqueous citric acid solution is stored in the washing tub 4 until the inner container 32 is immersed. In addition, when the magnesium bolus M reaches the service life, the user can replace the original inner receiving portion 32 with a new inner receiving portion 32 in which a new magnesium bolus M is received, or decompose the inner receiving portion 32 to replace the magnesium bolus M. The user can also perform maintenance for removing foreign matter trapped by the filter 33 of the outer housing portion 31 of the detached housing portion 9.

As a result, the washing L can be efficiently washed with magnesium while a smooth dehydration process is realized, and the maintainability of magnesium can be improved. In addition, the attachment portion of the magnesium pellets M is predetermined as the configuration of the guide cover 8 in this way, and the problem that the magnesium pellets M are forgotten to be put into the washing operation can be prevented.

Further, the housing 9 is attached to a circulation water path 29 constituted by the guide cover 8. By this, by promoting the chemical reaction between the magnesium pellets M accommodated in the accommodation portion 9 and the washing water flowing in the circulation water path 29, a large amount of alkaline ionized water is generated, and the generated alkaline ionized water is positively sprayed onto the laundry L in the washing tub 4. Therefore, the laundry L can be effectively washed with a large amount of alkaline ionized water generated from the magnesium of the magnesium pellets M.

In the housing portion 9, the magnesium pellets M are housed in the second internal space 32N of the housing portion 32, and the housing portion 32 is housed in the first internal space 31Q of the outer housing portion 31. The first and second internal spaces 31Q and 32N are passages of the washing water flowing in the circulation water path 29, and thus, a large amount of alkaline ionized water can be generated by promoting chemical reaction of the magnesium pellets M accommodated in the accommodating portion 9 with the washing water flowing in the first and second internal spaces 31Q and 32N. Therefore, the laundry L can be effectively washed with a large amount of alkaline ionized water generated from the magnesium of the magnesium pellets M. Further, since the inner container 32 is detachable from the outer container 31, the user can detach the container 9 from the guide cover 8 to separate the outer container 31 and the inner container 32, and after the magnesium pellets M in the inner container 32 are maintained, the container 9 is reattached to the guide cover 8 in the reverse order from the detachment. This improves the maintainability of magnesium.

Further, the second internal space 32N in which the magnesium pellets M are accommodated is divided into a plurality of accommodation chambers 32Q arranged in the up-down direction Z, and the more the accommodation amount of the magnesium pellets M in the accommodation chamber 32Q is, the more the accommodation chamber 32Q is on the lower side Z2. That is, in the circulation water path 29 in which the washing water is drawn, the larger the storage chamber 32Q of the lower side Z2 in which the large amount of washing water is vigorously sprayed, the larger the storage amount of the magnesium pellets M, the smaller the flow rate of the washing water and the smaller the storage amount of the magnesium pellets M, compared to the storage chamber 32Q of the lower side Z2, the higher the storage chamber 32Q of the upper side in which the water potential of the washing water is weak. In this way, in each storage chamber 32Q, an appropriate storage amount of the magnesium pellets M according to the flow rate and water potential of the washing water in each storage chamber 32Q is stored. Accordingly, the magnesium balls M actively moved by the flow of the washing water in each storage chamber 32Q effectively chemically react with the washing water to promote the generation of the alkaline ion water, so that a large amount of alkaline ion water can be generated in the entire second inner space 32N. Therefore, the laundry L can be effectively washed with a large amount of alkaline ionized water generated from the magnesium of the magnesium pellets M.

Further, the proportion of the magnesium pellets M in each housing chamber 32Q is 70% or less, and each magnesium pellet M actively moves in the housing chamber 32Q, so that a large contact area with the washing water in the magnesium pellets M can be ensured. Accordingly, in each storage chamber 32Q, the magnesium pellets M effectively chemically react with the washing water to promote the generation of the alkaline ionized water, so that a large amount of alkaline ionized water can be generated in the entire second internal space 32N. Therefore, the laundry L can be effectively washed with a large amount of alkaline ionized water generated from the magnesium of the magnesium pellets M.

Further, when hydrogen gas generated by the chemical reaction with the washing water adheres to the surface of the magnesium pills M, the subsequent chemical reaction becomes retarded, but as described above, the magnesium pills M actively move in the respective accommodation chambers 32Q, whereby the hydrogen gas is difficult to adhere to the surface of the magnesium pills M. Thus, in each accommodation chamber 32Q, chemical reaction is effectively performed with the washing water by each magnesium pellet M, thereby promoting the generation of alkaline ionized water.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope described in the claims.

For example, in the case of the laundry L of the sensitive material which may be damaged by the alkaline ion water, the washing operation may be performed in a state in which the containing portion 32 containing the magnesium pellets M which are the source of the alkaline ion water is detached from the containing portion 9.

The attachment portion to which the housing portion 9 is attached is the circulation water path 29 in the above-described embodiment, but may exist in a different manner from the circulation water path 29. In the modification shown in fig. 11, the portions that bypass the circulation water path 29, that is, the guide cover 8, on the boundary portion of the circumferential wall 4A and the bottom wall 4B in the washing tub 4 are attachment portions. Then, arc-shaped receiving portions 9 extending in the circumferential direction P are detachably attached to the respective attaching portions. The housing 9 is a hollow body formed with a slit-shaped inlet/outlet 9A for allowing the washing water to enter and exit, and directly houses a large amount of magnesium pellets M.

The washing machine 1 is a vertical washing machine in the above-described embodiment, but may be a drum-type washing machine in which the rotation axis J of the washing tub 4 extends horizontally in the front-rear direction Y. Further, the washing machine 1 may be a washing and drying integrated machine having a drying function. In addition, in the above-described washing operation, the pickling process may be omitted.

Claims

1. A washing machine, comprising:

the washing barrel is cylindrical, contains washings, can store washing water and can rotate around a rotation axis passing through the circle center of the washing barrel;

a plurality of attachment parts arranged at an inner surface portion of the washing tub so as to be dispersed in a rotation direction around the rotation axis; and

a housing part detachably attached to the plurality of attachment parts, respectively, and housing the magnesium pellets;

the rotation axis extends in a vertical direction or in an oblique direction with respect to the vertical direction,

the attachment portion has an inlet disposed on a bottom wall side of the washing tub and an outlet disposed at a position higher than the inlet and facing the inside of the washing tub, and constitutes a circulation water path for drawing the washing water in the washing tub from the inlet and returning it from the outlet to the inside of the washing tub;

The receiving portion includes an outer receiving portion and an inner receiving portion,

the outer receiving part has a first inner space which becomes a passage of the washing water flowing in the circulation waterway and a filter which captures foreign matters from the washing water flowing in the first inner space,

the outer accommodating portion has an outer opening and a lower opening, and is disposed on the lower side of the outer accommodating portion so as to be inserted into the first inner space from the lower opening of the outer accommodating portion;

the second internal space is divided into a plurality of accommodating chambers arranged in the up-down direction and accommodating the magnesium pellets,

the lower the accommodating chambers, the larger the accommodating amount of the magnesium pellets.

2. A washing machine as claimed in claim 1, characterized in that,

the proportion of the magnesium pellets in each accommodating chamber is below 70%.