WO2022237579A1

WO2022237579A1 - Washing machine

Info

Publication number: WO2022237579A1
Application number: PCT/CN2022/090232
Authority: WO
Inventors: 今西佑太; 本田雅夫
Original assignee: 青岛海尔洗衣机有限公司; Aqua株式会社; 海尔智家股份有限公司
Priority date: 2021-05-10
Filing date: 2022-04-29
Publication date: 2022-11-17
Also published as: JP7558516B2; JP2022173739A

Abstract

A washing machine. The washing machine comprises: a detergent box (110) accommodating a detergent to be supplied to a washing and dewatering tub; a water filling port portion (200) accommodating the detergent box (110) in an accessible manner; and a water supply portion supplying water to the water filling port portion (200). A water receiving chamber (230a) for receiving the water supplied from the water supply portion is arranged on a position at the water filling port portion (200) that is above the detergent box (110), water falling from a water supply port (221) arranged in a top surface of the water receiving chamber (230a) is flushed into a water surface to generate bubbles in the water, and an outlet (234) for allowing the water containing the bubbles to flow down into the detergent box (110) is arranged in a bottom surface of the water receiving chamber (230a). The detergent box (110) comprises: a siphon mechanism (S1) using the siphon principle to discharge a detergent liquid which is formed by mixing water flowing out of the outlet (234) and the detergent; and an overflow port (118) for discharging detergent foam generated by the detergent.

Description

washing machine

technical field

The invention relates to a washing machine.

Background technique

Patent Document 1 discloses a washing machine comprising: a detergent box for containing detergent, and a detergent liquid generated from water and detergent; a tank, the water supply unit supplies water to the detergent box to cause detergent liquid to flow out of the detergent box; and a foaming chamber is arranged below the water supply box, and foams the detergent liquid flowing in from the water supply unit. In the washing machine disclosed in Patent Document 1, improvement in detergency is expected by supplying the foamed detergent solution to the washing tub.

The aforementioned washing machine includes a foaming chamber as a place for foaming the detergent liquid. Therefore, the size of the entire unit including the detergent box, the water supply unit, and the foaming chamber tends to become large. Thus, there is a fear that it is necessary to increase the size of the main body of the washing machine or reduce the size of the detergent box.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2017-000312

Contents of the invention

The problem to be solved by the invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide a washing machine capable of sufficiently foaming detergent in a detergent box and supplying the generated detergent foam to a washing tub.

solutions to problems

The washing machine according to the main aspect of the present invention is equipped with: a washing tub arranged in the cabinet to wash the laundry; a detergent box containing detergent to be supplied to the washing tub; The detergent box is accommodated in a way of entering and exiting; and a water supply unit supplies water to the water injection port. Wherein, at the water injection port, a water receiving chamber is provided above the detergent box, and the water receiving chamber is a chamber for receiving water supplied from the water supply unit, and the water receiving chamber is provided on the top surface of the chamber. The water falling from the water supply port will rush into the water surface to generate air bubbles in the water, and the bottom surface of the water receiving chamber is provided with an outflow port for the water containing the air bubbles to flow down into the detergent box. The detergent box includes: a siphon mechanism for discharging detergent liquid mixed with water and detergent flowing out from the outlet by using a siphon principle; and a foam discharge unit for discharging detergent foam generated by the detergent .

According to the above-mentioned structure, the detergent can be easily foamed by making the water containing the air bubbles generated in the water receiving chamber flow down into the detergent box in which the detergent is dropped, so that the detergent foam can be sufficiently generated in the detergent box, and can The generated detergent foam is supplied to the washing tub.

In the washing machine of this solution, the following structure can be adopted: an inflow chamber is provided at the water injection port, and the inflow chamber communicates with the water receiving chamber for the water that does not flow out from the outflow port to flow from the water receiving chamber Inflow, the inflow chamber is provided with a discharge port for discharging the inflowing water so as to supply it to the washing tub.

According to the above configuration, the flow rate of water supplied to the water receiving chamber does not need to be greatly reduced, so water tends to fall from the water supply port with good momentum, and many air bubbles tend to be generated in the water receiving chamber. Also, the time required to supply water to the washing tub is less likely to become longer.

In the case of adopting the above structure, the following structure may be adopted: the water injection port has a water injection path for the detergent liquid and the detergent foam discharged from the detergent box to flow to the In the washing tub, the discharge port discharges the water flowing into the inflow chamber from upstream of the foam discharge part to the water injection path.

With such a structure, the detergent foam discharged to the water injection path can be washed away by the water discharged from the outlet, so that the detergent foam flows smoothly through the water injection path, and the detergent foam is less likely to remain in the water injection path.

In the washing machine of this aspect, the following structure can be adopted: the siphon mechanism part is located between the drop position where the water flows from the outflow port and the foam discharge part, and includes: a siphon tube having a cylindrical shape with upper and lower ends open, protruding upward from the bottom of the detergent box; and a siphon cap having a cylindrical shape with an upper end closed and a lower end open to form a gap as a flow path of the detergent liquid between the siphon cap and the siphon tube way to cover the siphon. In this case, the following structure may be adopted: a cover part covering the siphon mechanism part is provided at the upper end of the siphon cap, and the cover part is lowered toward the siphon part than the siphon cap. The protruding portion on the position side has an inclined surface that guides the detergent bubbles going to the bubble discharge part to the upper side of the siphon cap.

According to the above-mentioned structure, the detergent foam generated in the detergent box can be discharged favorably from the foam discharge part without being hindered by the siphon cap or the cover part.

Invention effect

According to the present invention, it is possible to provide a washing machine capable of sufficiently foaming detergent in a detergent box and supplying the generated detergent foam to a washing tub.

The effects and significance of the present invention will be further clarified by the description of the embodiments shown below. However, the following embodiments are merely examples for carrying out the present invention, and the present invention is not limited at all by the contents described in the following embodiments.

Description of drawings

Fig. 1 is a side sectional view of a fully automatic washing machine according to an embodiment.

(a) and (b) of FIG. 2 are perspective views of the detergent injection device of embodiment.

Fig. 3 is a side sectional view of the detergent injection device cut at the position of the detergent box according to the embodiment.

Fig. 4 is an exploded perspective view of the input cassette showing a state in which two cover units are removed according to the embodiment.

(a) of FIG. 5 is a side sectional view of the insertion box cut at the position of the siphon mechanism part of the detergent box according to the embodiment. (b) of FIG. 5 is a side sectional view of the insertion box cut at the position of the siphon mechanism part of the softener box according to the embodiment.

(a) of FIG. 6 is a perspective view of the top plate member to which the chamber forming member and the water passage forming member are attached, as viewed from below according to the embodiment. (b) of FIG. 6 is a perspective view of the chamber forming member and the water channel forming member of the embodiment.

(a) and (b) of FIG. 7 are diagrams schematically showing main parts of the detergent injecting device for explaining the injecting operation of detergent from the detergent box to the washing and dehydrating tub according to the embodiment.

Explanation of reference signs

1: fully automatic washing machine (washing machine); 10: cabinet; 22: washing and dehydrating bucket (washing bucket); 110: detergent box; 111: bottom surface; 117: siphon; 118: overflow (foam discharge); : siphon cap; 142: cover; 143: inclined surface; 200: water injection port; 230a: water receiving chamber; 230b: inflow chamber; 234: outflow port; 235: discharge port; 250: water injection channel; department.

Detailed ways

Hereinafter, one embodiment of the washing machine according to the present invention will be described with reference to the drawings.

FIG. 1 is a side sectional view of a fully automatic washing machine 1 .

Referring to FIG. 1 , a fully automatic washing machine 1 includes a casing 10 constituting an outer contour. The housing 10 includes a rectangular cylindrical body part 11 with open upper and lower surfaces, an upper panel 12 covering the upper surface of the body part 11 , and a foot stand 13 for supporting the body part 11 . An inlet 14 for laundry is formed on the top panel 12 . The inlet 14 is covered with an openable and closable upper cover 15 . On the front portion of the upper panel 12, a control unit 16 is arranged inside. The control unit 16 controls the washing operation of the fully automatic washing machine 1 .

The outer barrel 20 with an open upper surface is elastically suspended and supported in the box body 10 by four suspension rods 21 with anti-vibration devices. The outer tub 20 is provided with a washing and dehydrating tub 22 with an open upper surface. The washing and dehydrating tub 22 rotates around a rotation axis extending in the vertical direction. Many dehydration holes 22 a are formed on the inner peripheral surface of the washing and dehydrating tub 22 over the entire circumference. A balance ring 23 is provided on the top of the washing and dehydrating tub 22 . A pulsator 24 is rotatably disposed at the bottom of the washing and dehydrating tub 22 . A plurality of blades 24a are radially provided on the surface of the pulsator 24 . The washing and dehydrating tub 22 corresponds to the "washing tub" of the present invention.

On the outer bottom of the outer tub 20 is disposed a drive unit 30 that generates torque for driving the washing and dehydrating tub 22 and the pulsator 24 . The drive unit 30 includes a drive motor 31 and a transmission mechanism portion 32 . The transmission mechanism part 32 has a clutch mechanism 32a. Through the switching operation realized by the clutch mechanism 32a, the torque of the drive motor 31 is only transmitted to the pulsator 24 during the washing process and the rinsing process, and only the pulsator 24 is rotated. During the process, the torque of the drive motor 31 is transmitted to the pulsator 24 and the washing and dehydrating tub 22 so that the pulsator 24 and the washing and dehydrating tub 22 rotate integrally.

A drain opening 20 a is formed on the outer bottom of the tub 20 . The drain valve 40 is provided in the drain port part 20a. The drain valve 40 is connected to a drain hose 41 . When the drain valve 40 is opened, the water stored in the washing and dehydrating tub 22 and the outer tub 20 is discharged to the outside of the machine through the drain hose 41 .

Detergent injection device 50 is disposed substantially in the center of the rear portion of upper panel 12 . Detergent injecting device 50 includes: input box 100 into which liquid detergent and liquid conditioner are injected; and box-shaped water injection port 200 for storing input box 100 in such a manner that input box 100 can be taken in and out.

The water supply part 60 is arrange|positioned at the rear part of the upper panel 12. As shown in FIG. The water supply part 60 includes a first water supply valve 61 , a second water supply valve 62 , a first water supply path 63 , a second water supply path 64 , a third water supply path 65 and a water injection port 66 . The first water supply valve 61 and the second water supply valve 62 are composed of double solenoid valves. The first water supply path 63 and the second water supply path 64 respectively extend from the first water supply valve 61 and the second water supply valve 62 and are connected to the water filling port 200 . The third water supply path 65 branches from the first water supply path 63 and is connected to the water injection port 66 .

When the first water supply valve 61 is opened, the water for causing the detergent to flow out from the input box 100 is supplied to the water injection port 200 through the first water supply passage 63 . The detergent flowing out from the input box 100 is injected into the washing and dehydrating tub 22 . Furthermore, water is supplied to the water injection port 66 through the third water supply channel 65 , and water is injected into the washing and dehydrating tub 22 from the water injection port 66 .

When the second water supply valve 62 is opened, water for causing the softener to flow out from the insertion box 100 is supplied to the water injection port 200 through the second water supply passage 64 . The softener flowing out from the insertion box 100 is injected into the washing and dehydrating tub 22 . It should be noted that when the second water supply valve 62 is opened, the first water supply valve 61 is also opened. As a result, water is poured into the washing and dehydrating tub 22 from the water inlet portion 200 and the water inlet 66 .

Next, the configuration of detergent injection device 50 will be described in detail.

(a) and (b) of FIG. 2 are perspective views of the detergent injection device 50 . (a) of FIG. 2 shows a state in which the input cartridge 100 is accommodated in the water injection port 200 . (b) of FIG. 2 shows a state in which the injection cassette 100 is pulled out from the water injection port 200 . FIG. 3 is a side sectional view of detergent injection device 50 cut at the position of detergent box 110 . FIG. 4 is an exploded perspective view of the input cassette 100 showing a state where the two

cover units

140 and 150 are removed. (a) of FIG. 5 is a side cross-sectional view of the insertion box 100 cut at the position of the siphon mechanism part S1 of the detergent box 110 . (b) of FIG. 5 is a side cross-sectional view of the insertion box 100 cut at the position of the siphon mechanism part S2 of the softener box 120 . (a) of FIG. 6 is a perspective view of the top plate member 220 to which the chamber forming member 230 and the water passage forming member 240 are attached viewed from below. (b) of FIG. 6 is a perspective view of the chamber forming member 230 and the water passage forming member 240 . In (b) of FIG. 6 , the position of the water supply port 221 for supplying water to the water receiving chamber 230 a and the position of the water supply port 222 for supplying water to the water channel 240 a are shown by two-dot chain lines for convenience.

The detergent injection device 50 includes an injection box 100 and a water injection port 200 . The water injection port 200 has a substantially square box shape with an open front. The input box 100 is accommodated in the water inlet portion 200, and is pulled out forward when injecting detergent or softener.

Insertion box 100 includes detergent box 110 , conditioner box 120 , and door 130 . A cover unit 140 is attached to the detergent box 110 , and a cover unit 150 is attached to the conditioner box 120 .

Detergent box 110 and softener box 120 are integrally formed in a substantially square box shape with an upper surface opening, and are arranged in the left-right direction. The width in the left-right direction of detergent box 110 is set wider than the width in the left-right direction of softener box 120 .

Detergent box 110 includes a bottom surface 111 , a front surface 112 , a rear surface 113 , a left surface 114 , and a right surface 115 . The right surface 115 in contact with the conditioner box 120 is set higher than the front surface 112 and the left surface 114 . The rear surface 113 is set lower than the front surface 112 and the left surface 114 . In the bottom surface portion 111, a circular concave portion 116 is formed at the rear. The bottom surface portion 111 is inclined downward toward the concave portion 116 from the front portion 112 side and the rear surface portion 113 side.

In the bottom part 111, a siphon 117 is provided in the recessed part 116. As shown in FIG. The siphon tube 117 has a cylindrical shape with upper and lower ends open, and protrudes upward from the bottom surface portion 111 . The lower end portion of the siphon pipe 117 protrudes slightly downward from the bottom surface portion 111 and is chamfered. Three vertical ribs 117 a extending in the vertical direction are formed on the peripheral surface of the siphon tube 117 at intervals of approximately 180 degrees in the circumferential direction. Horizontal ribs 116 a extending from the lower ends of the respective vertical ribs 117 a toward the outer periphery of the recess 116 are formed on the bottom surface of the recess 116 .

The siphon cap 141 of the cover unit 140 covers the siphon tube 117 from above. The siphon cap 141 has a cylindrical shape with an upper end closed and a lower end open. The depth of the siphon cap 141 is set slightly larger than the protruding height of the siphon tube 117 from the recess 116 .

The inner diameter of the siphon cap 141 is set substantially the same as the outer diameter of the siphon tube 117 including the three longitudinal ribs 117a. The three longitudinal ribs 117a are in contact with the inner peripheral wall of the siphon cap 141 , and the three transverse ribs 116 are in contact with the lower end of the siphon cap 141 . Accordingly, a flow path is formed between the siphon cap 141 and the siphon tube 117 and between the siphon cap 141 and the bottom surface of the recess 116 .

The siphon tube 117 and the siphon cap 141 constitute the siphon mechanism section S1. The siphon mechanism part S1 discharges the detergent liquid obtained by mixing the water and detergent supplied to the detergent box 110 from the detergent box 110 using the principle of siphon.

The cover unit 140 includes a cover part 142 provided on the upper end of the siphon cap 141 . The cover portion 142 has a substantially square shape viewed from above. In the cover portion 142 , an inclined surface 143 descending from an upper surface 142 a of the cover portion 142 is provided at a portion protruding forward from the siphon cap 141 so as to extend over most of the left-right direction. Further, a eave portion 144 extending horizontally forward is formed at a position lower than the inclined surface 143 at the front end of the cover portion 142 , that is, in front of the inclined surface 143 . A mark 144a indicating that the height position of the eaves 144 is the upper limit liquid level of the liquid detergent injected into the detergent box 110 is marked on the upper surface of the eaves 144 .

In the detergent box 110, the overflow port 118 is provided in the rear surface part 113 by notching so that the upper end part of the rear surface part 113 may extend to most of the left-right direction. The position of the overflow port 118 is set to be slightly higher than the position of the upper end of the siphon pipe 117, that is, the liquid level at which the siphon mechanism part S1 starts to discharge the detergent liquid. The lower edge of the overflow port 118 is substantially at the same height as the upper surface 142 a of the cover portion 142 . The overflow port 118 is equivalent to the foam discharge part of this invention.

The conditioner box 120 includes a bottom surface 121 , a front surface 122 , a rear surface 123 , a left surface 124 , and a right surface 125 . The left surface 124 in contact with the detergent box 110 is commonly used as the right surface 115 of the detergent box 110 and is set higher than the front surface 122 and the right surface 125 . The rear surface 123 is set lower than the front surface 122 and the right surface 125 . Similarly to bottom surface 111 of detergent box 110 , recess 126 is formed on bottom surface 121 , and siphon 127 is provided on recess 126 .

The siphon cap 151 of the cover unit 150 covers the siphon tube 127 from above. The siphon cap 151 has the same structure as the siphon cap 141 . The three longitudinal ribs 127 a on the peripheral surface of the siphon pipe 127 are in contact with the inner peripheral wall of the siphon cap 151 , and the three transverse ribs 126 on the bottom surface of the recess 126 are in contact with the lower end of the siphon cap 151 . Accordingly, a flow path is formed between the siphon cap 151 and the siphon tube 127 and between the siphon cap 151 and the bottom surface of the recess 126 .

The siphon tube 127 and the siphon cap 151 constitute the siphon mechanism section S2. The siphon mechanism part S2 discharges from the conditioner case 120 the softener liquid in which the water supplied to the conditioner case 120 is mixed with the softener by using a siphon principle.

The cover unit 150 includes a cover part 152 provided on the upper end of the siphon cap 151 . The structure of the cover part 152 is the same as that of the cover part 142 except that the width in the left-right direction is narrower than that of the cover part 142 , and has an inclined surface 153 and a eaves part 154 . A mark 154a indicating that the height position of the eaves 154 is the upper limit liquid level of the liquid softener injected into the softener box 120 is marked on the upper surface of the eaves 154 .

In the softener box 120, the overflow port 128 is provided in the back surface part 123 by notching so that the upper end part of the back surface part 123 may extend to most of the left-right direction. The position of the overflow port 128 is set higher than the liquid level at which the siphon mechanism part S2 starts to discharge the softener liquid.

The shape of the door body 130 viewed from the front is substantially square, and has an inclination in which the front surface falls slightly backward. The door body 130 includes: a main body part 131 integrally formed with the detergent box 110 and the conditioner box 120 ; and a front panel part 132 attached to the front side of the main body part 131 . The front portion of the door body 130 extends upwards and downwards compared to the rear portion of the door body 130 , and the lower end portion of the front portion serves as a handle portion for moving the input cassette 100 into and out of the water inlet portion 200 .

In the insertion box 100 , leg plates 160 are provided on both left and right sides so that the left surface 114 of the detergent box 110 and the right surface 125 of the conditioner box 120 are further extended downward. Furthermore, a deflector 170 hanging down from the rear end portion of the lower surface of the door body 130 is provided in the input box 100 . The deflector 170 has a rectangular plate shape long in the left-right direction, and is slightly convexly curved toward the rear.

The water inlet portion 200 includes a water inlet member 210 , a top plate member 220 , a chamber forming member 230 , and a water channel forming member 240 .

The spout member 210 has a substantially square box shape with its front and top surfaces open. As shown in FIG. 3 , on the bottom surface portion 211 of the water inlet member 210 , mounting tables 212 extending in the front-rear direction are provided at both left and right end portions. The mounting surface 212a which is the upper surface of the mounting table 212 is horizontal. A portion between the two mounting platforms 212 of the bottom surface portion 211 is inclined downward toward the front. In the front portion of the bottom surface portion 211, a semi-elliptical concave portion 211a is formed in the center.

The top plate member 220 has a substantially square plate shape and is attached to the top surface of the water injection port member 210 to block the opening of the top surface. In the top plate member 220, a square water supply port 221 is formed on the left side of the front part, and a square water supply port 222 is formed on the right side of the rear end part. A connection pipe 223 connected to the water supply port 221 and a connection pipe 224 connected to the water supply port 222 are formed on the upper surface of the top plate member 220 . A water supply hose (not shown) constituting the first water supply path 63 of the water supply unit 60 is connected to the connection pipe 223 . A water supply hose (not shown) constituting the second water supply path 64 of the water supply unit 60 is connected to the connection pipe 224 .

Attachment portions 225 to which the chamber forming member 230 is attached and attachment portions 226 to which the water supply path forming member 240 is attached are provided on the lower surface of the top plate member 220 in a row in the left-right direction. The two

attachment parts

225, 226 include

square frames

225a, 226a and a plurality of

claws

225b, 226b provided on the inner wall surfaces of the

frames

225a, 226a.

The chamber forming member 230 has a substantially rectangular shallow box shape with an open top. Inside the chamber forming member 230 , a partition wall 231 extending from the left side toward the center and a partition wall 232 extending from the right side toward the center are provided on the front side. By partitioning with these two

partition walls

231 and 232, a water receiving chamber 230a for receiving water supplied from the water supply unit 60 is formed on the front side inside the chamber forming member 230, and a water receiving chamber 230a for receiving water supplied from the water supply unit 60 is formed on the rear side. 230a flows into the inflow chamber 230b.

The water receiving chamber 230 a and the inflow chamber 230 b communicate through a communication port 233 that is a gap between the two

partition walls

231 , 232 . A plurality of (for example, nine) circular outflow ports 234 are formed on the bottom surface of the water receiving chamber 230a in two rows. The plurality of outflow ports 234 protrude slightly below the chamber forming member 230 . On the bottom surface of the inflow chamber 230b, two circular discharge ports 235 are formed at the rear end. The two discharge ports 235 protrude slightly below the chamber forming member 230, and the ends thereof are chamfered.

In the chamber forming member 230, a flange portion 236 is formed on the periphery of the opening on the top surface. The chamber forming member 230 is attached to the attaching portion 225 by fitting inside the frame 225 a and engaging the claw 225 b with the flange portion 236 . The top surface of the water receiving chamber 230 a and the top surface of the inflow chamber 230 b are covered with the top plate member 220 . As shown in (b) of FIG. 6 , the water supply port 221 is located at the left rear corner of the top surface of the water receiving chamber 230 a. The outflow port 234 does not exist directly below the water supply port 221 . That is, on the bottom surface of the water receiving chamber 230a, a plurality of outflow ports 234 are provided avoiding positions directly below the water supply port 221 and scattered over the entire bottom surface.

The water channel forming member 240 has a substantially rectangular shallow box shape with an open top. The water passage forming member 240 is narrower than the chamber forming member 230 in width in the left-right direction. A partition wall 241 extending from the rear side to the front side is provided inside the water channel forming member 240 . Partitioned by this partition wall 241 , a water channel 240 a is formed inside the water channel forming member 240 . The water channel 240 a extends forward from the left rear end and then folds back to extend to the right rear end.

A plurality of (for example, sixteen) circular outlets 242 are formed on the bottom surface of the folded portion of the water channel 240a. The plurality of outflow ports 242 protrude slightly below the water channel forming member 240 . A circular discharge port 243 is formed on the bottom surface of the right rear end portion of the water channel 240a. The discharge port 243 protrudes slightly below the water channel forming member 240, and the end thereof is chamfered.

In the water passage forming member 240 , a flange portion 244 is formed on the opening peripheral edge of the top surface. The water passage forming member 240 is attached to the attachment portion 226 by being fitted inside the frame 226 a and engaging the claw 226 b with the flange portion 244 . The top surface of the water channel 240a is covered by the top plate member 220 . As shown in FIG.6(b), the water supply port 222 is located in the left rear end part of the water channel 240a. The bottom surface of the water channel 240a is inclined so as to become lower as it goes from the position of the water supply port 222 to the position of the discharge port 243 so that water can flow easily.

As shown in FIG. 3 , in the state where the input box 100 is stored in the water injection port 200 , the foot plates 160 on the left and right sides of the input box 100 are placed on the left and right sides of the water injection port member 210 in a manner that can move forward. Set Taiwan 212. Between the bottom surface 111 of the detergent box 110 and the bottom surface 121 of the conditioner box 120 and the bottom surface 211 of the water inlet member 210, and between the rear surface 113 of the detergent box 110 and the rear surface 123 of the conditioner box 120 Gaps are provided between the rear surfaces 213 of the nozzle member 210 , and these gaps serve as the water injection path 250 of the water injection port 200 . The front surface opening of the water injection port 200 located in the water injection channel 250 serves as a water injection port 251 . The deflector 170 faces the water injection port 251 .

A water receiving chamber 230 a is disposed above the front portion of the detergent box 110 . The siphon mechanism part S1 of the detergent box 110 is located between the overflow port 118 of the detergent box 110 and the position directly below the several outflow openings 234, ie, the position where the water from the outflow openings 234 falls. In the cover part 142, the inclined surface 143 exists in the part which protrudes to the drop position side rather than the siphon cap 141. As shown in FIG. The two discharge ports 235 of the inflow chamber 230 b are located upstream of the water injection path 250 from the overflow port 118 of the detergent box 110 .

A water channel 240 a is arranged above the softener box 120 , and a plurality of outflow ports 242 of the water channel 240 a are located at the front of the softener box 120 . The discharge port 243 of the water path 240 a is located in the water injection path 250 .

The fully automatic washing machine 1 performs washing operations in various operation modes. In the washing operation, a washing process, an intermediate dehydration process, a rinsing process, and a final dehydration process are sequentially performed. Depending on the operation mode, the rinsing process and the intermediate spin process may be performed twice or more.

During the washing process and the rinsing process, the pulsator 24 rotates in the right direction and the left direction when water is stored in the washing and dehydrating tub 22 . The rotation of the pulsator 24 generates water flow in the washing and dehydrating tub 22 . During the washing process, the washing is washed by the generated water flow and the detergent contained in the water. During the rinsing process, the laundry is rinsed by the generated water flow.

During the intermediate dehydration process and the final dehydration process, the washing and dehydration tub 22 and the pulsator 24 are integrally rotated at high speed. The laundry is dehydrated by centrifugal force generated in the washing and dehydrating tub 22 .

Before starting the washing operation, the injection box 100 is pulled out from the water inlet portion 200, and the liquid detergent and the liquid conditioner are injected into the detergent box 110 and the conditioner box 120 respectively for one operation.

The detergent put into detergent box 110 is supplied to washing and dehydrating tub 22 during water supply in the washing process. At this time, detergent foam is actively generated from the detergent in detergent box 110 , and the generated detergent foam is supplied to washing and dehydrating tub 22 together with the detergent.

(a) and (b) of FIG. 7 are diagrams schematically showing main parts of detergent injecting device 50 for explaining the action of injecting detergent from detergent box 110 into washing and dehydrating tub 22 .

When water is supplied in the cleaning process, the first water supply valve 61 is opened, and water is supplied to the water filling port 200 through the first water supply channel 63 .

As shown in (a) of FIG. 7 , the water supplied to the water inlet 200 falls from the water supply port 221 provided on the top surface of the water receiving chamber 230a to the water receiving chamber 230a and is received by the water receiving chamber 230a. At this time, the falling water hits the water surface, whereby the air in the water receiving chamber 230a mixes with the water to generate countless air bubbles in the stored water.

Water containing air bubbles flows out from the plurality of outflow ports 234 and flows down into the detergent box 110 . The falling water collides with the detergent stored in detergent box 110 . Detergent foams from the impact of the impinging water. At this time, air bubbles contained in water are added to the detergent, thereby promoting foaming. As a result, a large amount of detergent foam is generated in detergent box 110 .

The water in the water receiving chamber 230a that has not flowed out from the outflow port 234 flows into the inflow chamber 230b, and is discharged to the water injection channel 250 from the discharge port 235 of the inflow chamber 230b. In this way, part of the water in the water receiving chamber 230a is discharged through the inflow chamber 230b, so it is not necessary to greatly reduce the water supply flow rate to the water receiving chamber 230a to prevent the water receiving chamber 230a from being filled with water and causing the room to exhaust air. . Accordingly, water tends to fall from the water supply port 221 with good momentum, and therefore, many air bubbles are easily generated in the water receiving chamber 230a.

It should be noted that the water receiving chamber 230a is preferably set to a volume such that the stored water is sufficiently filled with the generated air bubbles. If set in this way, water sufficiently containing air bubbles can flow out from the plurality of outflow ports 234 .

As shown in FIG. 7( b ), in detergent box 110 , detergent is mixed with water supplied from water receiving chamber 230 a to generate detergent liquid, and the liquid level of detergent liquid gradually rises. The generated detergent foam is lighter than the detergent liquid, so it exists near the water surface of the detergent liquid. When the liquid level exceeds the upper end of the siphon pipe 117 and the detergent liquid flows into the siphon pipe 117, the siphon mechanism part S1 starts to discharge the detergent liquid, and the detergent liquid is discharged to the water injection channel 250 through the siphon mechanism part S1. The detergent liquid flows through the water injection channel 250 to the water injection port 251 .

The discharge flow rate of the detergent liquid by the siphon mechanism S1 is set to be smaller than the water supply flow rate into the detergent box 110 , and the liquid level of the detergent liquid in the detergent box 110 continues to rise and reaches the height of the overflow port 118 . Accordingly, the detergent liquid is also discharged from the overflow port 118 to the water injection path 250 . Detergent bubbles generated in large quantities near the drop position of the water from the water receiving chamber 230 a also go to the overflow port 118 .

At this time, the detergent foam flows over the eaves 144 of the cover 142, and then is guided to the top of the siphon cap 141 by the inclined surface 143 of the cover 142. Then, the detergent bubbles flow over the siphon cap 141 and are discharged from the overflow port 118 to the water injection path 250 . In this way, the detergent bubbles smoothly flow to the overflow port 118 without being hindered by the siphon cap 141 and the cover part 142 .

Accordingly, the detergent foam generated in detergent box 110 can be well discharged to water injection path 250 . In addition, it is possible to make it difficult for detergent bubbles to remain on the back side of cover portion 142 and the like. Furthermore, since the detergent foam is guided upward by the inclined surface 143 of the cover part 142 and discharged from the siphon mechanism part S1, it is possible to prevent the detergent foam from being sucked by the flow of detergent liquid going to the bottom surface of the detergent box 110. in detergent solution. Thereby, it is possible to make it difficult for the detergent foam to disappear.

The detergent foam discharged from the overflow port 118 flows through the water injection path 250 together with the detergent liquid discharged from the overflow port 118 . At this time, the detergent foam is washed away by the water discharged from the discharge port 235 of the inflow chamber 230b to the upstream of the overflow port 118 . Accordingly, the detergent foam flows smoothly through the water injection channel 250 to the water injection port 251 , and the detergent foam is less likely to remain in the water injection channel 250 .

The detergent liquid and detergent foam flowing through the water injection channel 250 flow forward from the water injection port 251 , hit the deflector 170 , flow downward, and flow down into the washing and dehydrating tub 22 . In this way, not only water containing detergent but also a lot of detergent foam is supplied to washing and dehydrating tub 22 . The detergent bubbles come into contact with the laundry, whereby the detergent easily penetrates into the laundry. Thereby, the cleaning performance of the laundry can be improved during the cleaning process.

When the first water supply valve 61 is closed and the water supply ends, almost all the detergent liquid in the detergent box 110 will be discharged from the detergent box 110 through the siphon mechanism part S1.

The softener put into the softener box 120 is supplied to the washing and dehydrating tub 22 during the water supply in the rinsing process. The second water supply valve 62 is opened, and water is supplied to the water inlet portion 200 through the second water supply path 64 . The supplied water is introduced into water channel 240 a from water supply port 222 , flows through water channel 240 a , and flows out into softener box 120 from outflow port 242 . The water flowing out into the softener box 120 is mixed with the softener to generate a softener liquid. The softener liquid is discharged to the water injection path 250 through the siphon mechanism part S2 and the overflow port 128 , flows through the water injection path 250 , and reaches the washing and dehydration tub 22 . When the second water supply valve 62 is closed and the water supply ends, almost all the conditioner liquid in the conditioner box 120 will be discharged from the conditioner box 120 through the siphon mechanism part S2.

According to this embodiment, by making the water containing the air bubbles generated in the water receiving chamber 230a flow down into the detergent box 110 into which the detergent has been put, the detergent can be easily foamed, and therefore, sufficient bubbles can be generated in the detergent box 110. The detergent foam can be supplied to the washing and dehydrating tub 22 so as to generate the detergent foam. Thereby, the detergent easily penetrates into the laundry in the washing and dehydrating tub 22, and an improvement in cleaning performance can be expected. Furthermore, since a foaming chamber for generating detergent foam is not provided separately from detergent box 110, the size of detergent input device 50 is less likely to increase.

Furthermore, according to the present embodiment, the water in the water receiving chamber 230a that has not flowed out from the outlet 234 flows into the inflow chamber 230b, is discharged from the discharge port 235 of the inflow chamber 230b to the water injection path 250, and is supplied to the washing and dehydrating tub 22. Accordingly, the flow rate of the water supplied to the water receiving chamber 230a does not need to be greatly reduced, so water tends to fall from the water supply port 221 with good momentum, and many air bubbles tend to be generated in the water receiving chamber 230a. Furthermore, the time required to supply water to the washing and dehydrating tub 22 is less likely to be prolonged.

Also, according to the present embodiment, the detergent foam discharged to the water injection path 250 is washed away by the water discharged from the discharge port 235 of the inflow chamber 230 b to the upstream of the overflow port 118 . Accordingly, the detergent foam flows smoothly through the water injection path 250 , and the detergent foam is less likely to remain in the water injection path 250 .

Moreover, according to the present embodiment, the detergent bubbles are guided to the upper side of the siphon cap 141 by the inclined surface 143 of the cover portion 142 and flow through the upper side of the siphon cap 141 to be discharged from the overflow port 118 . Thereby, the detergent bubbles generated in detergent box 110 can be well discharged from overflow port 118 without being hindered by siphon cap 141 and cover portion 142 .

As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment at all, In addition, various changes other than the above can be added to embodiment of this invention.

For example, in the above-described embodiment, a plurality of circular outflow ports 234 are provided on the bottom surface of the water receiving chamber 230a so as to be arranged in two rows. However, the shape and arrangement of the outflow port 234 may be any shape and arrangement.

Moreover, in the said embodiment, the foam discharge part which discharges the detergent foam from the detergent box 110 was set as the overflow port 118 formed by notching the upper end of the back surface part 113. As shown in FIG. However, the foam discharge part may be in any form as long as it can discharge detergent foam from the detergent box 110 .

Furthermore, in the above-described embodiment, the water flowing into the inflow chamber 230 b is discharged from the discharge port 235 to the water injection path 250 , and is supplied to the washing and dehydrating tub 22 through the water injection path 250 . However, a structure may be adopted in which the water flowing into the inflow chamber 230 b is directly discharged from the outlet 235 to the outside of the water inlet 200 , and supplied to the washing and dehydrating tub 22 through a water supply path provided outside the water inlet 200 .

Moreover, in the said embodiment, the cover part 142 is provided in the upper end of the siphon cap 141, and the inclined surface 143 which guides the detergent foam to the upper side of the siphon cap 141 is provided in the cover part 142. As shown in FIG. However, the inclined surface 143 may not be provided on the lid part 142 . In addition, the cover part 142 may not be provided in the upper end of the siphon cap 141. As shown in FIG.

Moreover, the fully automatic washing machine 1 was shown in the said embodiment. However, the present invention can also be applied to washing machines other than the fully automatic washing machine 1, for example, a drum washing machine having a horizontal shaft type drum as a washing tub. In addition, the present invention can also be applied to a fully automatic washing and drying machine and a drum type washing and drying machine with a drying function.

In addition, the embodiments of the present invention can be appropriately modified in various ways within the scope of the technical ideas shown in the claims.

Claims

A washing machine, characterized in that it has:

The washing bucket is arranged in the box to wash the laundry;

a detergent box containing detergent to be supplied to the washing tub;

The water injection port accommodates the detergent box in such a way that the detergent box can enter and exit; and

a water supply unit that supplies water to the water injection port,

In the water injection port, a water receiving chamber is provided above the detergent box. The water receiving chamber is a chamber for receiving water supplied from the water supply unit. The water falling from the mouth will rush to the surface of the water and generate air bubbles in the water,

The bottom surface of the water receiving chamber is provided with an outflow port for the water containing the air bubbles to flow down into the detergent box,

The detergent box includes:

a siphon mechanism part, which uses a siphon principle to discharge a detergent liquid formed by mixing water and detergent flowing out from the outflow port; and

The foam discharge part discharges the detergent foam generated by the detergent.
The washing machine according to claim 1, characterized in that,

An inflow chamber is provided at the water injection port, and the inflow chamber communicates with the water receiving chamber for the water that has not flowed out from the outflow port to flow in from the water receiving chamber,

The inflow chamber is provided with a discharge port for discharging the inflowing water so as to supply it to the washing tub.
The washing machine according to claim 2, characterized in that,

The water injection port has a water injection path for the detergent liquid and the detergent foam discharged from the detergent box to flow to the washing tub,

The discharge port discharges the water flowing into the inflow chamber from upstream of the foam discharge part to the water injection path.
A washing machine according to any one of claims 1 to 3, characterized in that,

The siphon mechanism part is located between a drop position where water flows down from the outflow port and the foam discharge part, and includes:

a siphon tube having a cylindrical shape with upper and lower ends open, protruding upward from the bottom of the detergent box; and

a siphon cap having a cylindrical shape with an upper end closed and a lower end open, and covering the siphon pipe so as to form a gap as a flow path of the detergent liquid between the siphon cap and the siphon pipe,

A cover portion covering the siphon mechanism is provided at the upper end of the siphon cap,

The cover portion has an inclined surface at a portion of the cover protruding toward the drop position than the siphon cap, and the inclined surface guides the detergent bubbles going to the foam discharge portion toward above the siphon cap.