CN112135939A

CN112135939A - Washing and drying integrated machine

Info

Publication number: CN112135939A
Application number: CN201980029865.1A
Authority: CN
Inventors: 辻贵裕
Original assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd; Haier Asia Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd; Haier Asia Co Ltd
Priority date: 2018-05-01
Filing date: 2019-03-19
Publication date: 2020-12-25
Anticipated expiration: 2039-03-19
Also published as: WO2019210747A1; CN112135939B; JP7269703B2; JP2019193707A

Abstract

A washing and drying integrated machine can improve the maintainability of a drying filter. Washing and drying all-in-one (1) includes: a box body (2), an outer cylinder (3) supported by the box body (2), a circulation path (20), an air supply part (21), a heating part (22), a drying filter (40) and an injection part (26). The circulation path (20) has a take-out port (20D) and a return port (20E) connected to the outer cylinder (3). The air blowing unit (21) circulates air in the outer cylinder (3) by taking the air out of the take-out port (20D) into the circulation path (20) and returning the air from the return port (20E) into the outer cylinder (3). The heating unit (22) is provided in the circulation path (20) and heats the air in the circulation path (20). The drying filter (40) is provided in the circulation path (20) on the side of the outlet (20D) with respect to the heating unit (22). The lower surface portion (40A) of the drying filter (40) captures foreign matter in the air heading from the take-out port (20D) to the return port (20E) in the circulation path (20). The jetting section (26) jets water (W) toward the lower surface section (40A).

Description

Washing and drying integrated machine

Technical Field

The invention relates to a washing and drying integrated machine.

Background

The washing and drying machine described in patent document 1 includes an outer tub capable of storing water, a drum disposed in the outer tub and accommodating laundry, and a circulation duct. The circulation wind path comprises an air inlet and an air outlet which are connected with the outer cylinder, and an air supply unit with a blower and a heater. When the blower is operated, air in the outer cylinder is circulated so as to be sucked into the circulation air duct from the air inlet and flow into the outer cylinder from the air outlet. The circulated air is heated by the heater in the circulation air duct. The washings in the drum are dried by heated air. A drying filter for capturing foreign matters such as broken threads contained in the circulated air is disposed in the air blowing unit. For cleaning convenience, the drying filter can be detached from the air supply unit.

In the integrated washing and drying machine disclosed in patent document 1, since a user needs to periodically remove the drying filter and clean it, maintenance of the drying filter is troublesome.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2011-244984

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made under such a background, and an object thereof is to provide a washing and drying all-in-one machine capable of improving maintainability of a drying filter.

Means for solving the problems

The invention relates to a washing and drying integrated machine, which comprises: a box body; an outer tub supported by the tank and capable of storing water; a washing tub accommodated in the outer tub and accommodating laundry; a circulation path having a take-out port and a return port connected to the outer tube; a blowing unit that circulates air in the outer tube by taking the air out of the take-out port into the circulation path and returning the air into the outer tube from the return port; a heating unit provided in the circulation path and heating air in the circulation path; a drying filter provided in the circulation passage on the outlet side of the heating unit and having a lower surface portion for capturing foreign matter in the air flowing from the outlet to the return port in the circulation passage; a jetting section having a jetting port for jetting water and jetting water from the jetting port toward the lower surface section; and a drain filter which captures foreign matters in the water discharged from the outer tub and is detachably attached to the case.

In the present invention, the lower surface portion is disposed obliquely with respect to a horizontal direction, and the jetting portion jets water toward an upper end of the lower surface portion.

Further, the present invention is characterized in that the washing and drying all-in-one machine further includes a water guide portion that guides the water ejected from the ejection port so as to spread along the lower surface portion.

In addition, the present invention is characterized in that the washing and drying all-in-one machine further includes a foreign matter guide portion that guides foreign matter peeled off from the lower surface portion by the water ejected from the ejection portion to the extraction port.

In the present invention, the air blowing unit circulates air in the outer tube after the jetting unit jets water toward the lower surface portion.

Effects of the invention

According to the present invention, the air in the outer tub of the washing and drying all-in-one machine is circulated so as to be taken out from the take-out port into the circulation path and returned from the return port into the outer tub. The circulated air is heated by the heating portion in the circulation path to become hot air, and dries the laundry in the washing drum. The drying filter provided in the circulation path on the outlet side of the heating unit traps foreign matter contained in the air flowing from the outlet to the return port in the circulation path for circulation in the lower surface portion. Therefore, the foreign matter in the air can be suppressed from adhering to the heating portion. When the jetting part jets water from the jetting port toward the lower surface part of the drying filter, foreign matters remaining on the lower surface part are peeled off from the lower surface part, reach the inside of the outer cylinder from the take-out port, and are captured by the drainage filter when the outer cylinder drains water. Foreign substances caught by the drain filter are removed when a user detaches the drain filter for maintenance.

Therefore, the washing and drying integrated machine has the automatic maintenance function of the drying filter, so that a user can maintain the drying filter without detaching the drying filter. Therefore, the maintainability of the drying filter can be improved.

Further, according to the present invention, the jetting section jets water toward the upper end of the lower surface section disposed obliquely with respect to the horizontal direction in the drying filter, and therefore, foreign matter remaining on the lower surface section can be peeled off from the lower surface section without remaining. Therefore, the maintainability of the drying filter can be further improved.

Further, according to the present invention, since the water injected from the injection port of the injection part is diffused along the lower surface part of the drying filter, the foreign matter remaining on the lower surface part can be peeled off from the lower surface part without leaving any residue. Therefore, the maintainability of the drying filter can be further improved.

Further, according to the present invention, the foreign matter peeled off from the lower surface portion of the drying filter by the water sprayed from the spray portion is guided to the outlet port by the foreign matter guide portion. Therefore, the foreign matter caught by the lower surface portion of the drying filter can be discharged from the outlet into the outer tub without being attached again to the drying filter. Therefore, the maintainability of the drying filter can be further improved.

Further, according to the present invention, after the spraying part sprays water toward the lower surface part of the drying filter, the air inside the tub circulates and passes through the drying filter, thereby drying the drying filter. Therefore, the user can dry the drying filter wetted by the water spray without drying the drying filter. Therefore, the maintainability of the drying filter can be further improved.

Drawings

FIG. 1 is a right side elevation schematic longitudinal section view of a washer dryer of an embodiment of the present invention.

Fig. 2 is a perspective view of the outer tub and the drying unit disposed in the washing and drying integrated machine, viewed from the rear side.

Fig. 3 is an exploded perspective view of the tub and the drying unit.

Fig. 4 is a bottom view of a filter member constituting the drying unit.

Fig. 5 is a plan view of a spray part constituting the drying unit.

Fig. 6 is a bottom view of the combined filter member and ejector.

Fig. 7 is a sectional view taken along line a-a of fig. 6.

Fig. 8 is a sectional view taken along line B-B of fig. 7.

Fig. 9 is an enlarged view of a main portion of fig. 8.

Fig. 10 is an enlarged view of a main portion of fig. 7.

Fig. 11 is a rear view of a longitudinal section of the drying unit.

Description of the reference numerals

1: a washing and drying integrated machine; 2: a box body; 3: an outer cylinder; 6: a drain filter; 7: a washing drum; 20: a circulation path; 20D: a take-out port; 20E: a return port; 21: an air supply part; 22: a heating section; 25G: a first water guide part; 26: an injection section; 26C: a first foreign matter guide portion; 26D: an ejection port; 26E: a second water guide part; 26F: a third water guide part; 32M: a second foreign matter guide portion; 40: drying the filter; 40A: a lower surface portion; 40B: an upper end; h: a horizontal direction; l: washing the article; t: a foreign matter; w: and (3) water.

Detailed Description

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. Fig. 1 is a schematic vertical sectional right side view of a washing and drying all-in-one machine 1 according to 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 and drying machine 1, the left-right direction of fig. 1 is referred to as a front-rear direction Y of the washing and drying machine 1, and the up-down direction of fig. 1 is referred to as an up-down direction Z of the washing and drying machine 1. The left-right direction X and the front-back direction Y are included in the horizontal direction H. In the left-right direction X, the back side of the drawing sheet of fig. 1 is referred to as a left side X1, and the front side of the drawing sheet of fig. 1 is referred to as a right side X2. Of the front-rear direction Y, the left side in fig. 1 is referred to as a front side Y1, and the right side in fig. 1 is referred to as a rear side Y2. Among 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 and drying machine 1 is a so-called drum-type washing and drying machine, and includes a casing 2, an outer tub 3, a water supply path 4, a water discharge path 5, a water discharge filter 6, a washing tub 7, a motor 8, and a drying unit 9.

The case 2 is formed in a box shape. The front surface 2A of the case 2 is, for example, a vertical surface. An opening 2B for communicating the inside and outside of the case 2 is formed in the front surface 2A. A door 10 for opening and closing the opening 2B is provided on the front surface 2A.

The outer cylinder 3 is disposed in the casing 2 and elastically supported by the casing 2 via a hanger bar (not shown). The outer cylinder 3 has a cylindrical circumferential wall 3A centered on an axis J extending in the front-rear direction in the horizontal direction H, a disk-shaped back wall 3B closing a hollow portion of the circumferential wall 3A from the rear side Y2, and an annular front wall 3C continuous with a front end edge of the circumferential wall 3A. The back wall 3B is disposed vertically, and has an outer peripheral portion 3D and a central portion 3E protruding one step toward the rear side Y2 of the outer peripheral portion 3D. A through hole 3F that penetrates the center portion 3E in the front-rear direction along the axis J is formed in the center of the center portion 3E. The front wall 3C has an annular first portion 3G protruding from the leading end edge of the circumferential wall 3A toward the axis J, a cylindrical second portion 3H protruding from the inner peripheral edge of the first portion 3G toward the front side Y1, and an annular third portion 3I protruding from the leading end edge of the second portion 3H toward the axis J. Inside the third portion 3I, a passageway 3J that communicates from the front side Y1 to the hollow portion of the circumferential wall 3A is formed. The doorway 3J faces and communicates with the opening 2B of the box body 2 from the rear side Y2.

The water supply path 4 has one end (not shown) connected to a faucet (not shown) and the other end 4A connected to, for example, the center portion 3E of the rear wall 3B of the outer tube 3. In the water supply, water from the faucet is supplied from the water supply path 4 into the outer tube 3. The outer cylinder 3 stores therein water such as tap water or detergent water in which detergent is dissolved. A water supply valve 11 that is opened and closed to start or stop water supply is provided in the middle of the water supply path 4.

The drainage channel 5 is connected to a lower end of the outer cylinder 3, for example, a lower end of the first portion 3G of the front wall 3C. The water in the outer cylinder 3 is discharged from the drain passage 5 to the outside of the body. A drain valve 12 that is opened and closed to start or stop drainage is provided in the middle of the drain passage 5.

The drain filter 6 is provided in the drain path 5 at an upstream portion of the outer tub 3 from the drain valve 12. The drain filter 6 captures foreign substances in the water discharged from the outer tub 3. Since the front end of the drain filter 6 is exposed to the front surface 2A of the case 2, the user can grip the front end of the drain filter 6 and attach and detach the drain filter 6 to and from the case 2. The structure of the drain filter 6 can use a known structure.

The washing tub 7 is smaller than the outer tub 3 by one turn and can accommodate the laundry L therein. The washing tub 7 is accommodated in the outer tub 3. The washing tub 7 has a cylindrical circumferential wall 7A disposed coaxially with the circumferential wall 3A of the outer tub 3, a disk-shaped back wall 7B closing the hollow portion of the circumferential wall 7A from the rear side Y2, and an annular wall 7C protruding from the front end edge of the circumferential wall 7A toward the axis J side. The washing tub 7 has a plurality of through holes 7D formed at least in the circumferential wall 7A, and the water in the outer tub 3 flows between the outer tub 3 and the washing tub 7 through the through holes 7D. Thereby, the water level in the outer tub 3 and the water level in the washing tub 7 are matched. In the center of the back surface wall 7B of the washing tub 7, a support shaft 13 is provided extending to the rear side Y2 along the axis J. The rear end of the support shaft 13 is disposed on the rear side Y2 of the rear wall 3B through the through hole 3F of the rear wall 3B of the outer cylinder 3.

Inside the annular wall 7C, an inlet and outlet 7E that communicates with the hollow portion of the circumferential wall 7A from the front side Y1 is formed. The inlet 7E faces and communicates with the inlet 3J of the outer cylinder 3 and the opening 2B of the casing 2 from the rear side Y2. The

doorways

3J and 7E are opened and closed together with the opening 2B by the door 10. The user of the washing and drying machine 1 puts the laundry L into the washing tub 7 through the opened opening 2B, the entrances and exits 3J and 7E.

The motor 8 is disposed on the rear side Y2 of the rear wall 3B of the outer cylinder 3 in the casing 2. The motor 8 is coupled to a support shaft 13 provided in the washing tub 7. The driving force generated by the motor 8 is transmitted to the support shaft 13, and the washing tub 7 rotates about the axis J along with the support shaft 13. A clutch mechanism (not shown) for transmitting or cutting off the driving force of the motor 8 to the support shaft 13 may be provided between the motor 8 and the support shaft 13.

The drying unit 9 includes a circulation path 20, a blowing section 21, and a heating section 22. The circulation path 20 is a flow path disposed on the upper side Z1 of the outer tube 3 in the casing 2. The circulation path 20 has a middle portion 20A extending forward and rearward, a rear portion 20B extending from a rear end of the middle portion 20A to the lower side Z2, and a front portion 20C extending from a front end of the middle portion 20A to the lower side Z2. A take-out port 20D is formed at the front end of the lower end of the rear portion 20B. The outlet 20D is connected to the upper end of the outer peripheral portion 3D of the back wall 3B of the outer tube 3 and communicates with the inside of the outer tube 3 from the rear side Y2. At the lower end of the front portion 20C, a return port 20E is formed. The return port 20E is connected to the upper end of the second portion 3H of the front wall 3C of the outer cylinder 3 and communicates with the inside of the outer cylinder 3 from the upper side Z1.

The blowing unit 21 is a so-called blower, and includes a rotary blade 23 disposed in the circulation path 20 in a region near the upstream side of the ejection port 20D, and a motor (not shown) for rotating the rotary blade 23. When the rotary blade 23 rotates, the air in the outer tub 3, that is, the air in the outer tub 3 and the air in the washing tub 7 are taken out into the circulation passage 20 from the outlet port 20D as indicated by the thick dotted arrow, and then returned into the outer tub 3 from the return port 20E. Thereby, the air in the outer cylinder 3 circulates so as to flow through the outer cylinder 3 and the circulation path 20 in this order.

The heating unit 22 is a heat exchanger in a heat pump, a general heater, or the like, and at least a part of the heating unit 22 is provided in the circulation passage 20. The heating unit 22 includes a plurality of fin-shaped heat radiating portions 22A at portions provided in the circulation path 20. Since the heat radiating portion 22A becomes high temperature when the heating portion 22 operates, the air flowing through the circulation passage 20 is heated to become hot air when passing around the heat radiating portion 22A.

The washing and drying all-in-one machine 1 includes a control section 24 configured as a microcomputer. The control unit 24 controls the operations of the motor 8, the water supply valve 11, the drain valve 12, the air blowing unit 21, and the heating unit 22 to perform the washing and drying operation. The washing and drying operation includes a washing process, a rinsing process, a dehydrating process, and a drying process.

Before the washing process starts, detergent is introduced into the washing tub 7. During washing, controller 24 opens water supply valve 11 for a predetermined time to supply water to outer tub 3 and washing tub 7, and then rotates washing tub 7 by motor 8. Thereby, the laundry L in the washing tub 7 is knocked out. In the washing, the laundry L is repeatedly lifted to some extent and then naturally falls down to the water surface, thereby "rolling over". The laundry L is washed away with dirt by the impact of the tumbling action and detergent components contained in the detergent water stored in the washing tub 7. After a predetermined time has elapsed from the start of the tumbling, the control unit 24 opens the drain valve 12 to discharge the water, and the washing process is ended.

In the rinsing process, controller 24 opens water supply valve 11 for a predetermined time to supply water to outer tub 3 and washing tub 7, and then rotates washing tub 7 by motor 8. Since the above-described tumbling is repeated, the laundry L is rinsed by the tap water in the washing tub 7. After a predetermined time has elapsed from the start of the tumbling, the rinsing process is terminated when the controller 24 performs the draining. The rinsing process may be repeated several times. In the spin-drying process, the controller 24 rotates the washing tub 7 to spin-dry the water while the drain valve 12 is opened. The laundry L in the washing drum 7 is dehydrated by a centrifugal force generated by the dehydration rotation of the washing drum 7. The water seeped out from the laundry L by the dehydration is discharged from the drainage path 5 to the outside of the machine body. The dehydration process is performed not only after the rinsing process but also after the washing process.

During the drying process, the control unit 24 generates hot air by the air blowing unit 21 and the heating unit 22, circulates the hot air between the washing drum 7 and the circulation path 20, and supplies the hot air to the laundry L in the washing drum 7. Thereby, the laundry L is dried. Foreign matter such as broken threads is generated during the washing operation, and the foreign matter flows with hot air during the drying process. When foreign matter adheres to and accumulates in the heat radiating portion 22A of the heating portion 22, there is a possibility that performance is degraded due to a decrease in heating efficiency of the heating portion 22 and a deterioration in air flow in the circulation passage 20, and therefore, it is necessary to trap the foreign matter. Therefore, the drying unit 9 further includes a filter member 25, a spraying part 26, a bypass 27, and a water injection valve 28. Hereinafter, the air blowing part 21 and the circulation path 20 constituting the drying unit 9 will be described in detail, and then the filter member 25, the injection part 26, the bypass 27, and the water injection valve 28 will be described.

Fig. 2 is a perspective view of the outer tub 3 and the drying unit 9 as viewed from the rear side Y2. The blower 21 includes a hollow disk-shaped casing 29 in which the rotary blades 23 are accommodated. The casing 29 is a part of the circulation path 20, and the internal space of the casing 29 constitutes a connection portion between the middle portion 20A and the rear portion 20B in the circulation path 20.

Fig. 3 is an exploded perspective view of the tub 3 and the drying unit 9. The circulation path 20 includes a duct 30 occupying almost the entire rear portion 20B, and a connection hose 31 connecting the housing 29 and the duct 30. The duct 30 includes a main body 32 and a cover 33. The main body 32 has a curved wall 32A curved along an upper right portion of the circumferential wall 7A of the washing tub 7, a top wall 32B extending from a left end of the curved wall 32A to a right side X2, a side wall 32C extending downward Z2 while being bent from a right end of the top wall 32B and connected to the right end of the curved wall 32A, and a front wall 32D connected to respective front ends of the curved wall 32A, the top wall 32B, and the side wall 32C. The main body 32 has an upper space 32E surrounded by the curved wall 32A, the top wall 32B, and the side wall 32C and closed by the front wall 32D from the front side Y1. A cylindrical upper coupling portion 32F protruding upward Z1 is provided in the left region of the upper surface of top wall 32B. The internal space of the upper coupling portion 32F is in a state of communicating with the upper space 32E from the upper side Z1. The internal spaces of the upper space 32E and the upper coupling portion 32F constitute a part of the internal space of the rear portion 20B of the circulation path 20.

The main body 32 further includes a vertical wall 32G extending from the rear end of the curved wall 32A to the lower side Z2 and to the axis J side, and an outer wall 32H rising from an outer edge of the vertical wall 32G other than the upper end edge connected to the curved wall 32A to the rear side Y2. The vertical wall 32G has a plate thickness direction that coincides with the front-rear direction Y. The two ejection ports 20D are formed in a circumferential direction S around the axis J at the lower end of the vertical wall 32G. Each of the outlets 20D is a long hole extending in the circumferential direction S, and penetrates the vertical wall 32G in the front-rear direction Y. In the vertical wall 32G, a tubular lower connecting portion 32I that is formed by wrapping the ejection port 20D and protrudes toward the front side Y1 is provided one by one corresponding to each ejection port 20D. Two through holes 3K having the same shape as the outlet 20D are formed in the upper portion of the back wall 3B of the outer cylinder 3. Each lower coupling portion 32I is fitted into the corresponding through hole 3K from the rear side Y2. Thereby, the outlet 20D is connected to the back wall 3B and communicates with the inside of the outer tube 3.

On the rear surface of the vertical wall 32G, a guide rib 32J protruding to the rear side Y2 is provided. The guide rib 32J linearly extends from a position closer to the right side X2 to the front of the right ejection opening 20D in the vertical direction Z at the upper end of the vertical wall 32G. The outer wall 32H is formed in a substantially U shape in a back view, and defines a lower space 32K inside thereof. The lower space 32K is flat in the front-rear direction Y, is closed by the vertical wall 32G from the front side Y1, and is in a state of communicating with the rear end portion of the upper space 32E from the lower side Z2. The lower space 32K constitutes a part of the inner space of the rear portion 20B of the circulation path 20. In the upper space 32E, a partition 32L (see also fig. 2) is provided which is continuous with the upper end of the guide rib 32J and extends toward the front side Y1.

The cover 33 is plate-shaped having a shape substantially identical to the body 32 in a rear view, and has a plate thickness direction identical to the front-rear direction Y. The cover 33 is detachably attached to the main body 32 by a fastener (not shown) such as a screw. The cover 33 assembled to the main body 32 blocks the upper space 32E and the lower space 32K of the main body 32 from the rear side Y2.

The connection hose 31 is, for example, a rubber cylinder, and its internal space is open to the upper side Z1 and the lower side Z2. Approximately the lower half of the connection hose 31 is a bellows part 31A. A tubular pipe portion 31B having a circular tube shape protruding to the left side X1 is provided on the outer peripheral surface of substantially the upper half of the connection hose 31. The lower portion of the connection hose 31 is fitted to the upper connection portion 32F of the duct 30. The upper portion of the connection hose 31 is connected to the housing 29 of the blower 21 via the filter member 25, which will be described in detail later. The inner space of the connection hose 31 constitutes a part of the inner space of the rear portion 20B of the circulation path 20.

The filter member 25 includes a cylindrical portion 25A having an internal space open to the upper side Z1 and the lower side Z2, and an annular outer flange portion 25B projecting radially outward of the cylindrical portion 25A from the upper end of the filter member 25. At the left end of the cylindrical portion 25A, a notch 25C is formed which is recessed from the lower end of the cylindrical portion 25A to the upper side Z1. Referring to fig. 4, which is a bottom view of the filter member 25, an annular inner flange 25D projecting radially inward of the filter member 25 is provided at a midpoint in the vertical direction Z on the inner circumferential surface of the cylindrical portion 25A. The filter member 25 is provided with a drying filter 40 disposed in a circular hole 25E surrounded by the inner peripheral edge of the inner flange portion 25D. The drying filter 40 has a disc shape having the same size as the circular hole 25E, and is provided over the entire area of the circular hole 25E. The drying filter 40 may be a grid formed integrally with the inner flange 25D as shown in fig. 4, or may be a mesh sheet attached to the inner flange 25D by bonding or the like. In the drying filter 40 of fig. 4, the lower surface portion 40A is shown in an enlarged view. The lower surface portion 40A is a flat surface formed with a large number of grid openings or meshes, and is continuous with the lower surface of the inner flange portion 25D.

On the inner circumferential surface of the cylindrical portion 25A of the filter member 25, a pair of vertical walls 25F extending toward the drying filter 40 are provided one by one, that is, in total, on both sides of the notch 25C in the circumferential direction P. The pair of vertical walls 25F are formed to be bent in an L shape so as to be separated first and then to be close to each other in a bottom view. The upper end of each longitudinal wall 25F is connected to the lower surface of the inner flange portion 25D.

In a region of the lower surface of the inner flange portion 25D that is radially inward, i.e., on the side of the drying filter 40, a plurality of rib-shaped first water guide portions 25G are provided so as to protrude downward Z2. These first water guide portions 25G extend radially and linearly with respect to the notches 25C in a planar view, and are arranged between the pair of vertical walls 25F at substantially equal intervals in the circumferential direction P. The first water guide portions 25G located at both ends in the circumferential direction P are connected to the end portions of the pair of vertical walls 25F on the drying filter 40 side, respectively. Each of the first water guide portions 25G is disposed between the inner peripheral edge of the inner flange portion 25D and the inner peripheral surface of the cylindrical portion 25A in a plan view, and is disposed apart from the inner peripheral edge of the inner flange portion 25D and the inner peripheral surface of the cylindrical portion 25A. The lower end of each first water guide 25G is disposed at the same height as the lower end of each vertical wall 25F.

A protruding portion 25H protruding to the front of the inner peripheral edge of the inner flange portion 25D is provided on the inner peripheral surface of the cylindrical portion 25A. For example, three projections 25H are arranged at equal intervals in the circumferential direction P. The projections 25H are provided one by one at positions adjacent to two first water guide portions 25G positioned at both ends among the plurality of first water guide portions 25G arranged in the circumferential direction P, and at positions opposite to the notches 25C of the drying filter 40. A screw hole 25I is formed in the lower surface of each projection 25H.

The filter member 25 is fixed to the case 29 from the lower side Z2 by a fastener (not shown) which is fitted to the case 29 of the air blowing unit 21 through a through hole 25J formed in the outer flange portion 25B (see fig. 3). The filter member 25 and the housing 29 may be one component rather than separate components. The upper portion of the connection hose 31 is fitted to the cylindrical portion 25A of the filter member 25, and in this state, the notch 25C of the cylindrical portion 25A communicates with the inner space of the pipe portion 31B of the connection hose 31 from the inside of the connection hose 31 (see fig. 3). The inner space of the cylindrical portion 25A constitutes a part of the inner space of the rear portion 20B of the circulation passage 20, and connects the inner space of the housing 29 and the inner space of the connection hose 31.

Fig. 5 is a plan view of the ejection part 26. The ejection portion 26 includes a cylindrical portion 26A having an internal space open to an upper side Z1 and a lower side Z2, and an arc-shaped protruding portion 26B provided at one point in the circumferential direction of the cylindrical portion 26A and protruding outward in the radial direction R of the cylindrical portion 26A. The inner diameter of the substantially upper half of the cylindrical portion 26A is substantially equal to the outer diameter of the drying filter 40. The substantially lower half of the cylindrical portion 26A is reduced in diameter as it goes to the lower side Z2 (see fig. 3). The inner circumferential surface of the substantially lower half of the cylindrical portion 26A is a tapered first foreign-matter guide portion 26C having a diameter that decreases as the distance Z2 decreases toward the lower side. At the upper end of the cylindrical portion 26A, an ejection port 26D is formed with only a portion cut out in the same position as the protruding portion 26B in the circumferential direction Q thereof. The ejection port 26D is a slit extending in the circumferential direction Q in an arc shape. A second water guide portion 26E slightly bulging upward Z1 is formed on the upper end surface of the cylindrical portion 26A located at the center of the ejection port 26D in the circumferential direction Q. A pair of third water guide portions 26F are provided at the upper end of the cylindrical portion 26A so as to sandwich the ejection port 26D from both sides in the circumferential direction Q. The pair of third water guiding portions 26F extend so as to approach each other, and the respective tips thereof are disposed so as to protrude outward in the radial direction R from the injection port 26D.

The upper surface 26G of the projection 26B is a flat surface that is arranged at a position lower than the upper end surface of the cylindrical portion 26A of the ejection port 26D and extends in an arc shape in the circumferential direction Q. A groove 26H recessed toward the lower side Z2 is formed in the upper surface 26G at a position offset outward in the radial direction R. The groove 26H extends in the circumferential direction Q in an arc shape. At the outer periphery of the upper surface 26G in the radial direction R, a rib 26I that wraps the groove 26H and protrudes to the upper side Z1 is formed. Both end portions of the rib 26I in the circumferential direction Q are bent so as to approach each other. A tubular pipe portion 26J extending linearly to the outside is provided on the outer peripheral surface of the projecting portion 26B on the outer side in the radial direction R. The inner space of the tube 26J is in a state of being communicated with the lower portion of the central portion of the groove 26H in the circumferential direction Q.

A protruding portion 26K protruding outward in the radial direction R is provided on the outer peripheral surface of the cylindrical portion 26A. For example, three projections 26K are arranged at equal intervals in the circumferential direction Q, and two of the projections 26K are arranged one by one on both sides of the projection 26B in the circumferential direction Q. Each of the protruding portions 26K is formed with a through hole 26L penetrating the protruding portion 26K in the vertical direction Z.

Fig. 6 is a bottom view of the combined filter member 25 and the ejection portion 26. The ejector 26 is assembled to the filter member 25 from the lower side Z2. Fig. 7 is a sectional view taken along line a-a of fig. 6. The cylindrical portion 26A of the ejection portion 26 is fitted into the cylindrical portion 25A of the filter member 25, and the circumferential direction P of the cylindrical portion 25A coincides with the circumferential direction Q of the cylindrical portion 26A. Each of the protruding portions 26K in the cylindrical portion 26A is disposed directly below any one of the protruding portions 25H in the cylindrical portion 25A. The fastening member 41 (see fig. 11 described later) is fitted into the screw hole 25I of the projection 25H through the through hole 26L of the projection 26K, whereby the ejector 26 is fixed to the filter member 25. The internal space of the cylindrical portion 26A constitutes a part of the internal space of the rear portion 20B of the circulation path 20.

In the ejection portion 26 fixed to the filter member 25, the upper end surface of the cylindrical portion 26A is in a state of being in contact with the lower surface of the inner flange portion 25D of the filter member 25 over the entire region other than the ejection port 26D. The lower surface portion 40A of the drying filter 40 is disposed inside the cylindrical portion 26A in a bottom view (see fig. 6).

Fig. 8 is a sectional view taken along line B-B of fig. 7. Fig. 9 is an enlarged view of a portion surrounded by a two-dot chain line in fig. 8. The injection port 26D is blocked by the flat lower surface of the inner flange portion 25D from the upper side Z1, and extends in the circumferential direction P in an elongated manner. In the injection ports 26D, the central portion in the circumferential direction P is referred to as a first region 26DA, and portions on both outer sides of the first region 26DA are referred to as second regions 26 DB. The first region 26DA coincides with the second water guide portion 26E bulging toward the upper side Z1 in the circumferential direction P at the upper end surface of the cylindrical portion 26A, and the second region 26DB coincides with a portion deviating from the second water guide portion 26E in the upper end surface of the cylindrical portion 26A. Thus, the first region 26DA is contracted further toward the upper side Z1 than the second region 26DB, and is narrower than the second region 26DB in the vertical direction Z.

Fig. 10 is an enlarged view of a portion surrounded by a two-dot chain line in fig. 7. The lower ends of the vertical wall 25F and the first water guide portion 25G (see fig. 4) provided on the lower surface of the inner flange portion 25D are in contact with a region of the upper surface 26G of the projection 26B of the injection portion 26 that is located radially inward of the groove 26H from the upper side Z1. The pair of vertical walls 25F sandwich the rib 26I provided on the upper surface 26G from the circumferential direction P, and the first water guide portions 25G located at both ends in the circumferential direction P are in a state of being connected one by one to the distal ends of the pair of third water guide portions 26F sandwiching the ejection port 26D in the cylindrical portion 26A (see fig. 5).

A relay space 42 is formed between the upper surface 26G of the protruding portion 26B and a portion of the lower surface of the inner flange portion 25D located directly above the upper surface 26G. The relay space 42 is an arc-shaped space extending along the circumferential direction P in a bottom view (see fig. 6). An outer space 42A located outside the relay space 42 in the radial direction R is in a state of communicating with the groove 26H from directly above. The upper end of the inner space 42B located on the inner side in the radial direction R of the relay space 42 is in a state of communicating with the injection port 26D from the outer side in the radial direction R. As such, the relay space 42 joins the groove 26H and the ejection port 26D together. In the inner space 42B, the plurality of first water guide portions 25G are arranged in the circumferential direction P (see fig. 5). The relay space 42 is closed by the pair of vertical walls 25F and the first water guide portion 25G connected to each vertical wall 25F from both sides in the circumferential direction P and closed by the rib 26I from the outside in the radial direction R (see fig. 5).

Fig. 11 is a longitudinal sectional rear view of the drying unit 9. The filter member 25 and the ejection unit 26 are disposed such that the lower surface portion 40A of the drying filter 40 is inclined with respect to the horizontal direction H. For example, in the present embodiment, the lower surface portion 40A is disposed obliquely so that the left end is the upper end 40B and the right end is the lower end 40C. The drying filter 40 is provided in the circulation path 20 on the side of the outlet 20D, that is, on the upstream side of the rotary blades 23 of the heating unit 22 and the blowing unit 21 (see fig. 1). The injection port 26D of the injection portion 26 is disposed on the lower surface portion 40A so as to face the upper end 40B from the left side X1. In the pipe portion 26J of the ejector 26, the root portion is fitted from the lower side Z2 into the notch 25C of the cylindrical portion 25A of the filter member 25, and the tip portion is in a state of extending radially outward of the R through the notch 25C and the pipe portion 31B of the connection hose 31.

The branch 27 branches from an upstream portion of the water supply path 4 closer to the faucet than the water supply valve 11, and is connected to a distal end portion of the pipe portion 26J of the injection portion 26 (see fig. 1). The water filling valve 28 is provided in the branch 27 (see fig. 1). The water filling valve 28 is opened and closed to supply water flowing from the water supply path 4 to the branch 27 to the pipe portion 26J or to stop the supply. The opening and closing of the water injection valve 28 is controlled by the control unit 24 (see fig. 1).

In the drying process, hot air is generated and circulated by the air blowing unit 21 and the heating unit 22 as described above. The hot air travels from the outlet port 20D to the return port 20E in the circulation passage 20, and passes through the drying filter 40 while rising at the intermediate rear portion 20B (see the arrow of the thick dotted line in fig. 1). The lower surface portion 40A of the drying filter 40 captures the foreign matter T from the hot air. Therefore, as the drying process proceeds, the foreign matter T remains on the lower surface portion 40A. This can prevent the foreign matter T from adhering to the heating portion 22 provided in the circulation path 20 so as to be offset downstream from the outlet 20D with respect to the drying filter 40.

After the drying course, that is, after the washing and drying operation is finished, the control part 24 opens the water filling valve 28. The water supply valve 11 may be provided upstream of the faucet from the branching position of the branch 27 in the water supply path 4, and in this case, the controller 24 opens both the water supply valve 11 and the water filling valve 28. Water from the faucet is supplied to the injection unit 26 via the water supply path 4 and the branch 27.

The water supplied to the jet part 26 flows into the pipe part 26J, passes through the groove 26H and the intermediate space 42 in this order, and is jetted from the jet port 26D toward the upper end 40B of the lower surface part 40A (see a broken-line arrow V). The water flowing through the inner space 42B of the relay space 42 passes through between the adjacent first water guide portions 25G, and at this time, is diffused to the entire region of the ejection port 26D by the first water guide portions 25G and the third water guide portions 26F (see fig. 5). The injection port 26D is configured such that only the central first region 26DA is constricted by the second water guide portion 26E (see fig. 9). Thereby, the intensity of the water flowing through the injection ports 26D is increased in the first region 26DA, and the amount of water is adjusted so that the water flows not only to the first region 26DA but also to the second region 26DB in the injection ports 26D. As a result, the water in the injection part 26 is guided by the first water guide part 25G, the second water guide part 26E, and the third water guide part 26F so as to spread in a fan shape along the lower surface part 40A of the drying filter 40, and is strongly injected from the injection port 26D (see the thick dotted arrow in fig. 5 and the water W in fig. 1).

The foreign matter T remaining on the lower surface portion 40A of the drying filter 40 is peeled off from the lower surface portion 40A by the strength of the water jetted from the jet port 26D and the weight of the foreign matter T, and falls into the cylindrical portion 26A of the jet portion 26. In particular, the water ejected from the ejection port 26D spreads in a fan shape along the lower surface portion 40A, so that the foreign matters T on the lower surface portion 40A are peeled off at once. The falling foreign matter T is guided into the upper coupling portion 32F of the pipe 30, which is located directly below the cylindrical portion 26A, by the tapered first foreign matter guide portion 26C of the cylindrical portion 26A. Thus, the foreign matter T peeled off from the lower surface portion 40A is not scattered and is connected to the bellows portion 31A of the hose 31, passes through the upper connecting portion 32F, falls into the upper space 32E of the duct 30, and is placed on the upper surface of the curved wall 32A of the main body 32 of the duct 30. The upper surface of the curved wall 32A is a second foreign matter guide 32M inclined to descend toward the lower space 32K of the duct 30 (see fig. 2). The foreign matter T is guided to the lower space 32K by the second foreign matter guide 32M and smoothly reaches the outlet 20D. In this case, the partition portion 32L and the guide rib 32J (see fig. 3) may guide the foreign matter T in the same manner as the second foreign matter guide portion 32M. The foreign matter T reaching the outlet 20D falls into the outer tube 3 through the outlet 20D. The water sprayed from the spray port 26D toward the lower surface portion 40A of the drying filter 40 also falls from the duct 30 into the outer tub 3 and remains in the outer tub 3, as with the foreign matter T.

When a predetermined time has elapsed after the water injection valve 28 is opened, the controller 24 closes the water injection valve 28 to stop the water injection from the injector 26 and open the drain valve 12. In addition, the discharge valve 12 may be always opened during the water injection from the injection unit 26. When the drain valve 12 is opened, the water remaining in the outer tub 3 flows into the drain path 5 along with the foreign matter T. At this time, the foreign matter T is captured by the drain filter 6 (see fig. 1). When the user removes the drain filter 6 at an appropriate timing to perform maintenance, the foreign matter T captured by the drain filter 6 is removed.

As described above, since the integrated washing and drying machine 1 has the function of automatically maintaining the drying filter 40, it is not necessary for the user to remove the drying filter 40 and perform maintenance work. Therefore, the maintainability of the drying filter 40 can be improved. Therefore, since the drying filter 40 may be non-detachable, a simpler structure and a lower cost than those of the detachable drying filter can be achieved. In addition, in the case of the detachable type drying filter, if the user forgets to maintain the filter, the performance may be degraded, and the washing and drying all-in-one machine 1 having the automatic maintenance function may avoid the performance degradation caused by forgetting to maintain the filter. Further, since the arrangement space required in the case of the detachable drying filter can be utilized for other purposes, it is possible to improve the performance by, for example, increasing the size of the heating unit 22 and the rotary blade 23.

The jetting unit 26 jets water toward an upper end 40B of a lower surface portion 40A of the drying filter 40 disposed obliquely to the horizontal direction H. Then, the water injected from the injection ports 26D of the injection part 26 is diffused along the lower surface part 40A of the drying filter 40 (refer to the thick dotted arrow of fig. 5). Therefore, the foreign matter T remaining on the lower surface portion 40A can be peeled off from the lower surface portion 40A without remaining. Therefore, further improvement in maintainability of the drying filter 40 can be achieved.

Further, the foreign matters T peeled off from the lower surface portion 40A of the drying filter 40 by the water injected from the injection portion 26 are guided to the outlet 20D by the first foreign matter guide portion 26C and the second foreign matter guide portion 32M. This allows foreign matter T trapped in lower surface 40A of dry filter 40 to be discharged from outlet 20D into tub 3 without being attached to dry filter 40 again. Therefore, further improvement in maintainability of the drying filter 40 can be achieved.

As a part of the automatic maintenance of the drying filter 40, the controller 24 causes the air in the outer tub 3 to circulate through the blower 21 after the water spray from the spray unit 26 is stopped. The drying filter 40, which is previously wetted by the water spray in order to remove the foreign matter T, is dried by being blown by the air flowing into the circulation path 20 from the tub 3. By operating the heating unit 22 to circulate the hot air, the drying of the drying filter 40 can be promoted. In this way, the user can eliminate the need to dry the filter 40, and the maintainability of the filter 40 can be further improved.

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

For example, in the drum-type washing and drying machine 1 of the above embodiment, the washing tub 7 may be disposed such that the axis J is inclined in the horizontal direction H. Furthermore, the washer dryer 1 may be a vertical washer dryer with an axis J extending longitudinally.

Claims

A washing and drying integrated machine is characterized by comprising:

a box body;

an outer tub supported by the tank and capable of storing water;

a washing tub accommodated in the outer tub and accommodating laundry;

a circulation path having a take-out port and a return port connected to the outer tube;

a blowing unit that circulates air in the outer tube by taking the air out of the take-out port into the circulation path and returning the air into the outer tube from the return port;

a heating unit provided in the circulation path and heating air in the circulation path;

a drying filter provided in the circulation passage on the outlet side of the heating unit and having a lower surface portion for capturing foreign matter in the air flowing from the outlet to the return port in the circulation passage;

a jetting section having a jetting port for jetting water and jetting water from the jetting port toward the lower surface section; and

and a drain filter which captures foreign matters in the water discharged from the outer tub and is detachably attached to the tank.
The washing and drying integrated machine according to claim 1,

the lower surface portion is disposed obliquely with respect to the horizontal direction,

the injection part injects water toward an upper end of the lower surface part.
The washing and drying integrated machine according to claim 1 or 2,

further comprising a water guide portion that guides the water ejected from the ejection port so as to spread along the lower surface portion.
The washing and drying integrated machine according to any one of claims 1-3, characterized in that,

the device further includes a foreign matter guide portion that guides foreign matter peeled off from the lower surface portion by the water ejected from the ejection portion to the ejection port.
The washing and drying integrated machine according to any one of claims 1-4,

the air blowing part circulates air in the outer cylinder after the jetting part jets water toward the lower surface part.